Clinician Reviews

Vitamin E may be best known for boosting skin and eye health as well as immune function. In recent years, researchers have explored the potential benefits of vitamin E on bone loss, especially in women with menopause-related osteoporosis. While data are beginning to roll in from these studies, evidence supporting a positive impact of vitamin E on osteoporosis and hip fracture risk in perimenopausal women remains elusive.

For osteoporosis, the rationale for using vitamin E is based on its antioxidant activity, which can scavenge potentially damaging free radicals. Researchers have asked whether vitamin E can help maintain the integrity of bone matrix and stimulate bone formation while minimizing bone resorption, particularly in trabecular (spongy) bone, the bone compartment preferentially affected in perimenopausal bone loss. 

Vitamin E mostly consists of two isomers: alpha-tocopherol and gamma-tocopherol. Alpha-tocopherol has higher antioxidant activity and is found in nuts, seeds, vegetable oils, green leafy vegetables, fortified cereals, and vitamin E supplements. Gamma-tocopherol is known for its superior anti-inflammatory properties and accounts for about 70% of the total vitamin E intake in a typical American diet, largely sourced from soybean and other vegetable oils. 

 

Benefits and Risks in Bone Loss Studies

Perimenopausal bone loss is caused, to a great extent, by the decrease in sex hormones. Studies of vitamin E in ovariectomized rats have yielded mixed results. This animal model lacks sex hormones and has similar bone changes to those of postmenopausal women. Some animal studies have suggested a positive effect of vitamin E on bone while others have reported no effect. 

Studies in humans also have produced conflicting reports of positive, neutral, and negative associations of vitamin E with bone health. For example, the Women’s Health Initiative examined the relationship between vitamin and mineral antioxidants and bone health in postmenopausal women and found no significant association between antioxidants and bone mineral density. 

Another study examining data from children and adolescents enrolled in the National Health and Nutrition Examination Survey (NHANES) database found an inverse association between alpha-tocopherol and lumbar spine bone density, suggesting a deleterious effect on bone. Inverse associations also have been reported in certain studies of postmenopausal women.

High doses of alpha-tocopherol have been linked to a risk for impaired bone health through a variety of mechanisms, such as interference with vitamin K metabolism; competitive binding for alpha-tocopherol transfer protein, inhibiting the entry of beneficial vitamin E isomers, including gamma-tocopherol; and pro-oxidant effects that harm bone. Thus, postmenopausal women taking vitamin E supplements primarily as high doses of alpha-tocopherol might be hindering their bone health. 

Data for gamma-tocopherol are more promising. Some studies hypothesize that gamma-tocopherol might uncouple bone turnover, leading to increased bone formation without affecting bone resorption. Further, a randomized controlled study of mixed tocopherols (rather than alpha-tocopherol) vs placebo reported a protective effect of this preparation on bone outcomes by suppressing bone resorption. This raises the importance of considering the specific forms of vitamin E when evaluating its role in bone health.

 

Limitations of Current Studies

Researchers acknowledge several limitations in studies to date. For example, there are very few randomized controlled trials assessing the impact of vitamin E on bone health. Most studies are cross-sectional or observational, even when longitudinal. Cross-sectional and observational designs prevent us from establishing a causal relationship between vitamin E and bone endpoints. 

Such designs also run the risk of additional confounders that may affect associations between vitamin E and bone, or the lack thereof. These could include both known and unknown confounders. Of note, gamma-tocopherol intake data were not available for certain NHANES studies. 

Further, people often consume multiple nutrients and supplements, complicating the identification of specific nutrient-disease associations. Most human studies estimate tocopherol intake by dietary questionnaires or measure serum tocopherol levels, which reflect short-term dietary intake, while bone mineral density is probably influenced by long-term dietary patterns.

 

Too Soon to Prescribe Vitamin E for Bone Health

Some nutrition experts advocate for vitamin E supplements containing mixed tocopherols, specifically suggesting a ratio of 50-100 IU of gamma-tocopherol per 400 IU of D-alpha-tocopherol. Additional research is essential to confirm and further clarify the role of gamma-tocopherol in bone formation and resorption. In fact, it is also important to explore the influence of other compounds in the vitamin E family on skeletal health.

Until more data are available, we would recommend following the Institute of Medicine’s guidelines for the recommended daily allowance (RDA) of vitamin E. This is age dependent, ranging from 4 to 11 mg/d between the ages of 0 and 13 years, and 15 mg/d thereafter. 

Overall, evidence of vitamin E’s impact on osteoporosis and hip fracture risk in perimenopausal women remains inconclusive. Although some observational and interventional studies suggest potential benefits, more interventional studies, particularly randomized controlled trials, are necessary to explore the risks and benefits of vitamin E supplementation and serum vitamin E levels on bone density and fracture risk more thoroughly.

Dr. Pani, Assistant Professor, Department of Internal Medicine, UVA School of Medicine; Medical Director, Department of General Medicine, Same Day Care Clinic, both in Charlottesville, has disclosed no relevant financial relationships. Dr. Misra, Professor, Chair, Physician-in-Chief, Department of Pediatrics, University of Virginia, and UVA Health Children’s, Charlottesville, has disclosed being a key opinion leader for Lumos Pharma.

A version of this article appeared on Medscape.com.

Vitamin E may be best known for boosting skin and eye health as well as immune function. In recent years, researchers have explored the potential benefits of vitamin E on bone loss, especially in women with menopause-related osteoporosis. While data are beginning to roll in from these studies, evidence supporting a positive impact of vitamin E on osteoporosis and hip fracture risk in perimenopausal women remains elusive.

For osteoporosis, the rationale for using vitamin E is based on its antioxidant activity, which can scavenge potentially damaging free radicals. Researchers have asked whether vitamin E can help maintain the integrity of bone matrix and stimulate bone formation while minimizing bone resorption, particularly in trabecular (spongy) bone, the bone compartment preferentially affected in perimenopausal bone loss. 

Vitamin E mostly consists of two isomers: alpha-tocopherol and gamma-tocopherol. Alpha-tocopherol has higher antioxidant activity and is found in nuts, seeds, vegetable oils, green leafy vegetables, fortified cereals, and vitamin E supplements. Gamma-tocopherol is known for its superior anti-inflammatory properties and accounts for about 70% of the total vitamin E intake in a typical American diet, largely sourced from soybean and other vegetable oils. 

 

Benefits and Risks in Bone Loss Studies

Perimenopausal bone loss is caused, to a great extent, by the decrease in sex hormones. Studies of vitamin E in ovariectomized rats have yielded mixed results. This animal model lacks sex hormones and has similar bone changes to those of postmenopausal women. Some animal studies have suggested a positive effect of vitamin E on bone while others have reported no effect. 

Studies in humans also have produced conflicting reports of positive, neutral, and negative associations of vitamin E with bone health. For example, the Women’s Health Initiative examined the relationship between vitamin and mineral antioxidants and bone health in postmenopausal women and found no significant association between antioxidants and bone mineral density. 

Another study examining data from children and adolescents enrolled in the National Health and Nutrition Examination Survey (NHANES) database found an inverse association between alpha-tocopherol and lumbar spine bone density, suggesting a deleterious effect on bone. Inverse associations also have been reported in certain studies of postmenopausal women.

High doses of alpha-tocopherol have been linked to a risk for impaired bone health through a variety of mechanisms, such as interference with vitamin K metabolism; competitive binding for alpha-tocopherol transfer protein, inhibiting the entry of beneficial vitamin E isomers, including gamma-tocopherol; and pro-oxidant effects that harm bone. Thus, postmenopausal women taking vitamin E supplements primarily as high doses of alpha-tocopherol might be hindering their bone health. 

Data for gamma-tocopherol are more promising. Some studies hypothesize that gamma-tocopherol might uncouple bone turnover, leading to increased bone formation without affecting bone resorption. Further, a randomized controlled study of mixed tocopherols (rather than alpha-tocopherol) vs placebo reported a protective effect of this preparation on bone outcomes by suppressing bone resorption. This raises the importance of considering the specific forms of vitamin E when evaluating its role in bone health.

 

Limitations of Current Studies

Researchers acknowledge several limitations in studies to date. For example, there are very few randomized controlled trials assessing the impact of vitamin E on bone health. Most studies are cross-sectional or observational, even when longitudinal. Cross-sectional and observational designs prevent us from establishing a causal relationship between vitamin E and bone endpoints. 

Such designs also run the risk of additional confounders that may affect associations between vitamin E and bone, or the lack thereof. These could include both known and unknown confounders. Of note, gamma-tocopherol intake data were not available for certain NHANES studies. 

Further, people often consume multiple nutrients and supplements, complicating the identification of specific nutrient-disease associations. Most human studies estimate tocopherol intake by dietary questionnaires or measure serum tocopherol levels, which reflect short-term dietary intake, while bone mineral density is probably influenced by long-term dietary patterns.

 

Too Soon to Prescribe Vitamin E for Bone Health

Some nutrition experts advocate for vitamin E supplements containing mixed tocopherols, specifically suggesting a ratio of 50-100 IU of gamma-tocopherol per 400 IU of D-alpha-tocopherol. Additional research is essential to confirm and further clarify the role of gamma-tocopherol in bone formation and resorption. In fact, it is also important to explore the influence of other compounds in the vitamin E family on skeletal health.

Until more data are available, we would recommend following the Institute of Medicine’s guidelines for the recommended daily allowance (RDA) of vitamin E. This is age dependent, ranging from 4 to 11 mg/d between the ages of 0 and 13 years, and 15 mg/d thereafter. 

Overall, evidence of vitamin E’s impact on osteoporosis and hip fracture risk in perimenopausal women remains inconclusive. Although some observational and interventional studies suggest potential benefits, more interventional studies, particularly randomized controlled trials, are necessary to explore the risks and benefits of vitamin E supplementation and serum vitamin E levels on bone density and fracture risk more thoroughly.

Dr. Pani, Assistant Professor, Department of Internal Medicine, UVA School of Medicine; Medical Director, Department of General Medicine, Same Day Care Clinic, both in Charlottesville, has disclosed no relevant financial relationships. Dr. Misra, Professor, Chair, Physician-in-Chief, Department of Pediatrics, University of Virginia, and UVA Health Children’s, Charlottesville, has disclosed being a key opinion leader for Lumos Pharma.

A version of this article appeared on Medscape.com.

Vitamin E may be best known for boosting skin and eye health as well as immune function. In recent years, researchers have explored the potential benefits of vitamin E on bone loss, especially in women with menopause-related osteoporosis. While data are beginning to roll in from these studies, evidence supporting a positive impact of vitamin E on osteoporosis and hip fracture risk in perimenopausal women remains elusive.

For osteoporosis, the rationale for using vitamin E is based on its antioxidant activity, which can scavenge potentially damaging free radicals. Researchers have asked whether vitamin E can help maintain the integrity of bone matrix and stimulate bone formation while minimizing bone resorption, particularly in trabecular (spongy) bone, the bone compartment preferentially affected in perimenopausal bone loss. 

Vitamin E mostly consists of two isomers: alpha-tocopherol and gamma-tocopherol. Alpha-tocopherol has higher antioxidant activity and is found in nuts, seeds, vegetable oils, green leafy vegetables, fortified cereals, and vitamin E supplements. Gamma-tocopherol is known for its superior anti-inflammatory properties and accounts for about 70% of the total vitamin E intake in a typical American diet, largely sourced from soybean and other vegetable oils. 

 

Benefits and Risks in Bone Loss Studies

Perimenopausal bone loss is caused, to a great extent, by the decrease in sex hormones. Studies of vitamin E in ovariectomized rats have yielded mixed results. This animal model lacks sex hormones and has similar bone changes to those of postmenopausal women. Some animal studies have suggested a positive effect of vitamin E on bone while others have reported no effect. 

Studies in humans also have produced conflicting reports of positive, neutral, and negative associations of vitamin E with bone health. For example, the Women’s Health Initiative examined the relationship between vitamin and mineral antioxidants and bone health in postmenopausal women and found no significant association between antioxidants and bone mineral density. 

Another study examining data from children and adolescents enrolled in the National Health and Nutrition Examination Survey (NHANES) database found an inverse association between alpha-tocopherol and lumbar spine bone density, suggesting a deleterious effect on bone. Inverse associations also have been reported in certain studies of postmenopausal women.

High doses of alpha-tocopherol have been linked to a risk for impaired bone health through a variety of mechanisms, such as interference with vitamin K metabolism; competitive binding for alpha-tocopherol transfer protein, inhibiting the entry of beneficial vitamin E isomers, including gamma-tocopherol; and pro-oxidant effects that harm bone. Thus, postmenopausal women taking vitamin E supplements primarily as high doses of alpha-tocopherol might be hindering their bone health. 

Data for gamma-tocopherol are more promising. Some studies hypothesize that gamma-tocopherol might uncouple bone turnover, leading to increased bone formation without affecting bone resorption. Further, a randomized controlled study of mixed tocopherols (rather than alpha-tocopherol) vs placebo reported a protective effect of this preparation on bone outcomes by suppressing bone resorption. This raises the importance of considering the specific forms of vitamin E when evaluating its role in bone health.

 

Limitations of Current Studies

Researchers acknowledge several limitations in studies to date. For example, there are very few randomized controlled trials assessing the impact of vitamin E on bone health. Most studies are cross-sectional or observational, even when longitudinal. Cross-sectional and observational designs prevent us from establishing a causal relationship between vitamin E and bone endpoints. 

Such designs also run the risk of additional confounders that may affect associations between vitamin E and bone, or the lack thereof. These could include both known and unknown confounders. Of note, gamma-tocopherol intake data were not available for certain NHANES studies. 

Further, people often consume multiple nutrients and supplements, complicating the identification of specific nutrient-disease associations. Most human studies estimate tocopherol intake by dietary questionnaires or measure serum tocopherol levels, which reflect short-term dietary intake, while bone mineral density is probably influenced by long-term dietary patterns.

 

Too Soon to Prescribe Vitamin E for Bone Health

Some nutrition experts advocate for vitamin E supplements containing mixed tocopherols, specifically suggesting a ratio of 50-100 IU of gamma-tocopherol per 400 IU of D-alpha-tocopherol. Additional research is essential to confirm and further clarify the role of gamma-tocopherol in bone formation and resorption. In fact, it is also important to explore the influence of other compounds in the vitamin E family on skeletal health.

Until more data are available, we would recommend following the Institute of Medicine’s guidelines for the recommended daily allowance (RDA) of vitamin E. This is age dependent, ranging from 4 to 11 mg/d between the ages of 0 and 13 years, and 15 mg/d thereafter. 

Overall, evidence of vitamin E’s impact on osteoporosis and hip fracture risk in perimenopausal women remains inconclusive. Although some observational and interventional studies suggest potential benefits, more interventional studies, particularly randomized controlled trials, are necessary to explore the risks and benefits of vitamin E supplementation and serum vitamin E levels on bone density and fracture risk more thoroughly.

Dr. Pani, Assistant Professor, Department of Internal Medicine, UVA School of Medicine; Medical Director, Department of General Medicine, Same Day Care Clinic, both in Charlottesville, has disclosed no relevant financial relationships. Dr. Misra, Professor, Chair, Physician-in-Chief, Department of Pediatrics, University of Virginia, and UVA Health Children’s, Charlottesville, has disclosed being a key opinion leader for Lumos Pharma.

A version of this article appeared on Medscape.com.

New biologic drugs for chronic obstructive pulmonary disease (COPD) are finally here, said Stephen Rennard, MD, in a presentation in a session on new drugs at the 2024 GOLD International COPD Conference.

The inflammatory pathways associated with COPD are diverse and offer a range of potential targets for biologics, said Rennard, a professor of pulmonary, critical care, and sleep medicine at the University of Nebraska Medical Center, Omaha. 

The therapeutic goals of biologics remain the same as with other treatments for COPD, namely restoration of normal inflammatory response and alteration of disease progression, as well as restoration of lost structure and function and improvement of systemic effects, Rennard said in his presentation. Most studies of new and up-and-coming drugs have improvement in acute exacerbation of COPD as the primary outcome.

 

The Biology Behind the Biologics

T2 inflammation is “an inflammatory cascade led by IL [interleukin]-4, IL-13, and IL-5,” Mona Bafadhel, MD, chair of Respiratory Medicine at King’s College London in England, said in her presentation during the session.

Bafadhel, who served as one of the investigators on the BOREAS and NOTUS studies, explained some of the science behind the development of the new biologics.

Eosinophils are powerful regulators of immune response and inflammation by stimulating T-cell production and affecting other immune cell types, she noted.

In the context of COPD and drug development, high blood eosinophil counts have been associated with increased COPD-related exacerbations, Bafadhel said. She cited data from a Dutch study of more than 7000 patients with COPD (with and without clinical diagnoses), in which absolute eosinophil counts ≥ 3.3% were associated with increased risk for severe exacerbations of 32% and 84% across all patients with COPD and clinical COPD, respectively.

Understanding the mechanisms of the eosinophil in COPD is important for research and development, Bafadhel said. Along with standardizing measurement of T2 inflammatory markers (IL-4, IL-13, and IL-5), more research is needed to fully understand the role of eosinophils in immunoregulation and repair.

 

Fitting the Biologic to the Patient

Several recent studies of up-and-coming biologics have focused on subsets of COPD patients, said Dave Singh, MD, professor of clinical pharmacology and respiratory medicine at The University of Manchester in England, in his presentation at the meeting. In September 2024, the Food and Drug Administration approved dupilumab as the first biologic treatment for patients with uncontrolled COPD and type 2 inflammation on the basis of eosinophil counts. Singh cited data from the BOREAS and NOTUS studies in which dupilumab significantly reduced exacerbations and improved lung function in these patients, compared with a placebo.

Mepolizumab, a biologic approved for asthma, is not currently approved for COPD, but data from a 2017 study showed a trend toward reduced exacerbations, compared with placebo, in a subset of patients with high blood eosinophil counts, Singh said.

In addition, a recent unpublished phase 3 study (MATINEE) showed a reduction in the annualized rate of exacerbations, compared with placebo, on the basis of up to 2 years’ follow-up.

Singh also highlighted data from a phase 2a study of astegolimab, a biologic drug that focuses on the IL-33 receptor, in which COPD exacerbation rates were not significantly different between treatment and placebo groups. However, astegolimab has shown safety and efficacy in adults with severe asthma and is under development in phase 3 trials for COPD.

Tezepelumab, which was approved by the FDA in 2021 as an add-on therapy for severe asthma in patients aged 12 years or older, is also in development as a therapy for COPD exacerbations, Singh said.

In a study presented at the 2024 American Thoracic Society annual meeting, Singh and colleagues found that tezepelumab at a subcutaneous dose of 420 mg every 4 weeks reduced the annualized rate of moderate or severe COPD exacerbations compared with placebo based on data from approximately 300 patients, although the difference was not statistically significant.

Itepekimab, another biologic, showed promise in a phase 2a genetic association study involving current and former smokers with moderate to severe COPD, Singh said.

In that study, published in 2022 in The Lancet Respiratory Medicine, itepekimab failed to meet the primary endpoint in the overall study population of reduced annualized rate of moderate to severe exacerbations; however, a subgroup analysis of former smokers showed a significant (42%) reduction in exacerbations, Singh said in his presentation. Two phase 3 clinical studies (AERIFY-1/2) are ongoing to confirm the safety and efficacy of itepekimab in former smokers with COPD.

 

Takeaways and Next Steps

“These therapies provide the first new classes of medications approved for COPD in nearly 20 years,” said David M. Mannino, MD, of the University of Kentucky, Lexington, in an interview. “Dupilumab will be available to a subset of patients who are poorly controlled and have evidence of high eosinophils in their blood and is only used once every 2 weeks,” added Mannino, who has served as a consultant to companies developing COPD drugs.

Both dupilumab and ensifentrine, a phosphodiesterase (PDE) 3 and PDE4 inhibitor also recently approved for maintenance treatment of COPD, have been shown in clinical trials to reduce exacerbations and improve symptoms, said Mannino. Both offer additional options for patients who continue to have symptoms and exacerbations in spite of their current therapy.

Some barriers to the use of biologics in practice include the high cost. “Access and overcoming insurance-related issues such as preauthorization and high copays will be a challenge,” he said. Also, because dupilumab is an injectable drug, some patient training will be required.

Newer biologic therapies in development are also injectables, but some studies are examining longer time intervals as long as every 6 months, which could be a major advancement for some patients. The newer therapies in development are similar to dupilumab in that they will be injected therapies. Some in development are looking at longer time intervals as long as every 6 months, which may be a major advancement for some patients. “All of these therapies, however, are currently targeting more advanced or serious disease,” he said.

Looking ahead, more therapies are needed for the treatment of early COPD, as well as therapies that can be administered to a large number of patients at a reasonable cost, Mannino added.

Rennard disclosed serving as a consultant for Verona Pharma, Sanofi, Beyond Air, RS BioTherapeutics, RespirAI, and Roche, as well as speaker fees from Sanofi and temporary ownership interest while employed by AstraZeneca. Rennard is also the founder of Great Plains Biometrix. Bafadhel disclosed funding from the National Institute for Health Research (NIHR), grants from Asthma + Lung UK, Horizon Europe, NIHR, and AstraZeneca to her institution, and honoraria from AstraZeneca, Boehringer Ingelheim, Chiesi, GlaxoSmithKline, Novartis, and Pfizer. Singh disclosed relationships including speaking sponsorships, honoraria, and advisory board memberships for Adovate, Aerogen, Almirall, Apogee, Arrowhead, AstraZeneca, Bial, Boehringer Ingelheim, Chiesi, Cipla, Connect Biopharm, Covis, CSL Behring, DevPro Biopharm, Elpen, Empirico, EpiEndo, Genentech, Generate Biomedicines, GlaxoSmithKline, Glenmark, Kamada, Kinaset Therapeutics, Kymera, Menarini, MicroA, OM Pharma, Orion, Pieris Pharmaceuticals, Pulmatrix, Revolo, Roivant Sciences, Sanofi, Synairgen, Tetherex, Teva, Theravance Biopharma, Upstream, and Verona Pharma. Mannino disclosed serving as a consultant to multiple companies currently developing COPD therapies (AstraZeneca, GlaxoSmithKline, Roche, Regeneron, Sanofi, Genentech, Amgen, and Chiesi).

A version of this article appeared on Medscape.com.

New biologic drugs for chronic obstructive pulmonary disease (COPD) are finally here, said Stephen Rennard, MD, in a presentation in a session on new drugs at the 2024 GOLD International COPD Conference.

The inflammatory pathways associated with COPD are diverse and offer a range of potential targets for biologics, said Rennard, a professor of pulmonary, critical care, and sleep medicine at the University of Nebraska Medical Center, Omaha. 

The therapeutic goals of biologics remain the same as with other treatments for COPD, namely restoration of normal inflammatory response and alteration of disease progression, as well as restoration of lost structure and function and improvement of systemic effects, Rennard said in his presentation. Most studies of new and up-and-coming drugs have improvement in acute exacerbation of COPD as the primary outcome.

 

The Biology Behind the Biologics

T2 inflammation is “an inflammatory cascade led by IL [interleukin]-4, IL-13, and IL-5,” Mona Bafadhel, MD, chair of Respiratory Medicine at King’s College London in England, said in her presentation during the session.

Bafadhel, who served as one of the investigators on the BOREAS and NOTUS studies, explained some of the science behind the development of the new biologics.

Eosinophils are powerful regulators of immune response and inflammation by stimulating T-cell production and affecting other immune cell types, she noted.

In the context of COPD and drug development, high blood eosinophil counts have been associated with increased COPD-related exacerbations, Bafadhel said. She cited data from a Dutch study of more than 7000 patients with COPD (with and without clinical diagnoses), in which absolute eosinophil counts ≥ 3.3% were associated with increased risk for severe exacerbations of 32% and 84% across all patients with COPD and clinical COPD, respectively.

Understanding the mechanisms of the eosinophil in COPD is important for research and development, Bafadhel said. Along with standardizing measurement of T2 inflammatory markers (IL-4, IL-13, and IL-5), more research is needed to fully understand the role of eosinophils in immunoregulation and repair.

 

Fitting the Biologic to the Patient

Several recent studies of up-and-coming biologics have focused on subsets of COPD patients, said Dave Singh, MD, professor of clinical pharmacology and respiratory medicine at The University of Manchester in England, in his presentation at the meeting. In September 2024, the Food and Drug Administration approved dupilumab as the first biologic treatment for patients with uncontrolled COPD and type 2 inflammation on the basis of eosinophil counts. Singh cited data from the BOREAS and NOTUS studies in which dupilumab significantly reduced exacerbations and improved lung function in these patients, compared with a placebo.

Mepolizumab, a biologic approved for asthma, is not currently approved for COPD, but data from a 2017 study showed a trend toward reduced exacerbations, compared with placebo, in a subset of patients with high blood eosinophil counts, Singh said.

In addition, a recent unpublished phase 3 study (MATINEE) showed a reduction in the annualized rate of exacerbations, compared with placebo, on the basis of up to 2 years’ follow-up.

Singh also highlighted data from a phase 2a study of astegolimab, a biologic drug that focuses on the IL-33 receptor, in which COPD exacerbation rates were not significantly different between treatment and placebo groups. However, astegolimab has shown safety and efficacy in adults with severe asthma and is under development in phase 3 trials for COPD.

Tezepelumab, which was approved by the FDA in 2021 as an add-on therapy for severe asthma in patients aged 12 years or older, is also in development as a therapy for COPD exacerbations, Singh said.

In a study presented at the 2024 American Thoracic Society annual meeting, Singh and colleagues found that tezepelumab at a subcutaneous dose of 420 mg every 4 weeks reduced the annualized rate of moderate or severe COPD exacerbations compared with placebo based on data from approximately 300 patients, although the difference was not statistically significant.

Itepekimab, another biologic, showed promise in a phase 2a genetic association study involving current and former smokers with moderate to severe COPD, Singh said.

In that study, published in 2022 in The Lancet Respiratory Medicine, itepekimab failed to meet the primary endpoint in the overall study population of reduced annualized rate of moderate to severe exacerbations; however, a subgroup analysis of former smokers showed a significant (42%) reduction in exacerbations, Singh said in his presentation. Two phase 3 clinical studies (AERIFY-1/2) are ongoing to confirm the safety and efficacy of itepekimab in former smokers with COPD.

 

Takeaways and Next Steps

“These therapies provide the first new classes of medications approved for COPD in nearly 20 years,” said David M. Mannino, MD, of the University of Kentucky, Lexington, in an interview. “Dupilumab will be available to a subset of patients who are poorly controlled and have evidence of high eosinophils in their blood and is only used once every 2 weeks,” added Mannino, who has served as a consultant to companies developing COPD drugs.

Both dupilumab and ensifentrine, a phosphodiesterase (PDE) 3 and PDE4 inhibitor also recently approved for maintenance treatment of COPD, have been shown in clinical trials to reduce exacerbations and improve symptoms, said Mannino. Both offer additional options for patients who continue to have symptoms and exacerbations in spite of their current therapy.

Some barriers to the use of biologics in practice include the high cost. “Access and overcoming insurance-related issues such as preauthorization and high copays will be a challenge,” he said. Also, because dupilumab is an injectable drug, some patient training will be required.

Newer biologic therapies in development are also injectables, but some studies are examining longer time intervals as long as every 6 months, which could be a major advancement for some patients. The newer therapies in development are similar to dupilumab in that they will be injected therapies. Some in development are looking at longer time intervals as long as every 6 months, which may be a major advancement for some patients. “All of these therapies, however, are currently targeting more advanced or serious disease,” he said.

Looking ahead, more therapies are needed for the treatment of early COPD, as well as therapies that can be administered to a large number of patients at a reasonable cost, Mannino added.

Rennard disclosed serving as a consultant for Verona Pharma, Sanofi, Beyond Air, RS BioTherapeutics, RespirAI, and Roche, as well as speaker fees from Sanofi and temporary ownership interest while employed by AstraZeneca. Rennard is also the founder of Great Plains Biometrix. Bafadhel disclosed funding from the National Institute for Health Research (NIHR), grants from Asthma + Lung UK, Horizon Europe, NIHR, and AstraZeneca to her institution, and honoraria from AstraZeneca, Boehringer Ingelheim, Chiesi, GlaxoSmithKline, Novartis, and Pfizer. Singh disclosed relationships including speaking sponsorships, honoraria, and advisory board memberships for Adovate, Aerogen, Almirall, Apogee, Arrowhead, AstraZeneca, Bial, Boehringer Ingelheim, Chiesi, Cipla, Connect Biopharm, Covis, CSL Behring, DevPro Biopharm, Elpen, Empirico, EpiEndo, Genentech, Generate Biomedicines, GlaxoSmithKline, Glenmark, Kamada, Kinaset Therapeutics, Kymera, Menarini, MicroA, OM Pharma, Orion, Pieris Pharmaceuticals, Pulmatrix, Revolo, Roivant Sciences, Sanofi, Synairgen, Tetherex, Teva, Theravance Biopharma, Upstream, and Verona Pharma. Mannino disclosed serving as a consultant to multiple companies currently developing COPD therapies (AstraZeneca, GlaxoSmithKline, Roche, Regeneron, Sanofi, Genentech, Amgen, and Chiesi).

A version of this article appeared on Medscape.com.

New biologic drugs for chronic obstructive pulmonary disease (COPD) are finally here, said Stephen Rennard, MD, in a presentation in a session on new drugs at the 2024 GOLD International COPD Conference.

The inflammatory pathways associated with COPD are diverse and offer a range of potential targets for biologics, said Rennard, a professor of pulmonary, critical care, and sleep medicine at the University of Nebraska Medical Center, Omaha. 

The therapeutic goals of biologics remain the same as with other treatments for COPD, namely restoration of normal inflammatory response and alteration of disease progression, as well as restoration of lost structure and function and improvement of systemic effects, Rennard said in his presentation. Most studies of new and up-and-coming drugs have improvement in acute exacerbation of COPD as the primary outcome.

 

The Biology Behind the Biologics

T2 inflammation is “an inflammatory cascade led by IL [interleukin]-4, IL-13, and IL-5,” Mona Bafadhel, MD, chair of Respiratory Medicine at King’s College London in England, said in her presentation during the session.

Bafadhel, who served as one of the investigators on the BOREAS and NOTUS studies, explained some of the science behind the development of the new biologics.

Eosinophils are powerful regulators of immune response and inflammation by stimulating T-cell production and affecting other immune cell types, she noted.

In the context of COPD and drug development, high blood eosinophil counts have been associated with increased COPD-related exacerbations, Bafadhel said. She cited data from a Dutch study of more than 7000 patients with COPD (with and without clinical diagnoses), in which absolute eosinophil counts ≥ 3.3% were associated with increased risk for severe exacerbations of 32% and 84% across all patients with COPD and clinical COPD, respectively.

Understanding the mechanisms of the eosinophil in COPD is important for research and development, Bafadhel said. Along with standardizing measurement of T2 inflammatory markers (IL-4, IL-13, and IL-5), more research is needed to fully understand the role of eosinophils in immunoregulation and repair.

 

Fitting the Biologic to the Patient

Several recent studies of up-and-coming biologics have focused on subsets of COPD patients, said Dave Singh, MD, professor of clinical pharmacology and respiratory medicine at The University of Manchester in England, in his presentation at the meeting. In September 2024, the Food and Drug Administration approved dupilumab as the first biologic treatment for patients with uncontrolled COPD and type 2 inflammation on the basis of eosinophil counts. Singh cited data from the BOREAS and NOTUS studies in which dupilumab significantly reduced exacerbations and improved lung function in these patients, compared with a placebo.

Mepolizumab, a biologic approved for asthma, is not currently approved for COPD, but data from a 2017 study showed a trend toward reduced exacerbations, compared with placebo, in a subset of patients with high blood eosinophil counts, Singh said.

In addition, a recent unpublished phase 3 study (MATINEE) showed a reduction in the annualized rate of exacerbations, compared with placebo, on the basis of up to 2 years’ follow-up.

Singh also highlighted data from a phase 2a study of astegolimab, a biologic drug that focuses on the IL-33 receptor, in which COPD exacerbation rates were not significantly different between treatment and placebo groups. However, astegolimab has shown safety and efficacy in adults with severe asthma and is under development in phase 3 trials for COPD.

Tezepelumab, which was approved by the FDA in 2021 as an add-on therapy for severe asthma in patients aged 12 years or older, is also in development as a therapy for COPD exacerbations, Singh said.

In a study presented at the 2024 American Thoracic Society annual meeting, Singh and colleagues found that tezepelumab at a subcutaneous dose of 420 mg every 4 weeks reduced the annualized rate of moderate or severe COPD exacerbations compared with placebo based on data from approximately 300 patients, although the difference was not statistically significant.

Itepekimab, another biologic, showed promise in a phase 2a genetic association study involving current and former smokers with moderate to severe COPD, Singh said.

In that study, published in 2022 in The Lancet Respiratory Medicine, itepekimab failed to meet the primary endpoint in the overall study population of reduced annualized rate of moderate to severe exacerbations; however, a subgroup analysis of former smokers showed a significant (42%) reduction in exacerbations, Singh said in his presentation. Two phase 3 clinical studies (AERIFY-1/2) are ongoing to confirm the safety and efficacy of itepekimab in former smokers with COPD.

 

Takeaways and Next Steps

“These therapies provide the first new classes of medications approved for COPD in nearly 20 years,” said David M. Mannino, MD, of the University of Kentucky, Lexington, in an interview. “Dupilumab will be available to a subset of patients who are poorly controlled and have evidence of high eosinophils in their blood and is only used once every 2 weeks,” added Mannino, who has served as a consultant to companies developing COPD drugs.

Both dupilumab and ensifentrine, a phosphodiesterase (PDE) 3 and PDE4 inhibitor also recently approved for maintenance treatment of COPD, have been shown in clinical trials to reduce exacerbations and improve symptoms, said Mannino. Both offer additional options for patients who continue to have symptoms and exacerbations in spite of their current therapy.

Some barriers to the use of biologics in practice include the high cost. “Access and overcoming insurance-related issues such as preauthorization and high copays will be a challenge,” he said. Also, because dupilumab is an injectable drug, some patient training will be required.

Newer biologic therapies in development are also injectables, but some studies are examining longer time intervals as long as every 6 months, which could be a major advancement for some patients. The newer therapies in development are similar to dupilumab in that they will be injected therapies. Some in development are looking at longer time intervals as long as every 6 months, which may be a major advancement for some patients. “All of these therapies, however, are currently targeting more advanced or serious disease,” he said.

Looking ahead, more therapies are needed for the treatment of early COPD, as well as therapies that can be administered to a large number of patients at a reasonable cost, Mannino added.

Rennard disclosed serving as a consultant for Verona Pharma, Sanofi, Beyond Air, RS BioTherapeutics, RespirAI, and Roche, as well as speaker fees from Sanofi and temporary ownership interest while employed by AstraZeneca. Rennard is also the founder of Great Plains Biometrix. Bafadhel disclosed funding from the National Institute for Health Research (NIHR), grants from Asthma + Lung UK, Horizon Europe, NIHR, and AstraZeneca to her institution, and honoraria from AstraZeneca, Boehringer Ingelheim, Chiesi, GlaxoSmithKline, Novartis, and Pfizer. Singh disclosed relationships including speaking sponsorships, honoraria, and advisory board memberships for Adovate, Aerogen, Almirall, Apogee, Arrowhead, AstraZeneca, Bial, Boehringer Ingelheim, Chiesi, Cipla, Connect Biopharm, Covis, CSL Behring, DevPro Biopharm, Elpen, Empirico, EpiEndo, Genentech, Generate Biomedicines, GlaxoSmithKline, Glenmark, Kamada, Kinaset Therapeutics, Kymera, Menarini, MicroA, OM Pharma, Orion, Pieris Pharmaceuticals, Pulmatrix, Revolo, Roivant Sciences, Sanofi, Synairgen, Tetherex, Teva, Theravance Biopharma, Upstream, and Verona Pharma. Mannino disclosed serving as a consultant to multiple companies currently developing COPD therapies (AstraZeneca, GlaxoSmithKline, Roche, Regeneron, Sanofi, Genentech, Amgen, and Chiesi).

A version of this article appeared on Medscape.com.

Chronic exposure to glyphosate — the most widely used herbicide globally — may be a risk factor for Alzheimer’s disease, new research showed. 

Researchers found that glyphosate exposure even at regulated levels was associated with increased neuroinflammation and accelerated Alzheimer’s disease–like pathology in mice — an effect that persisted 6 months after a recovery period when exposure was stopped.

“More research is needed to understand the consequences of glyphosate exposure to the brain in humans and to understand the appropriate dose of exposure to limit detrimental outcomes,” said co–senior author Ramon Velazquez, PhD, with Arizona State University, Tempe.

The study was published online in The Journal of Neuroinflammation.

 

Persistent Accumulation Within the Brain

Glyphosate is the most heavily applied herbicide in the United States, with roughly 300 million pounds used annually in agricultural communities throughout the United States. It is also used for weed control in parks, residential areas, and personal gardens.

The Environmental Protection Agency (EPA) has determined that glyphosate poses no risks to human health when used as directed. But the World Health Organization’s International Agency for Research on Cancer disagrees, classifying the herbicide as “possibly carcinogenic to humans.”

In addition to the possible cancer risk, multiple reports have also suggested potential harmful effects of glyphosate exposure on the brain. 

In earlier work, Velazquez and colleagues showed that glyphosate crosses the blood-brain barrier and infiltrates the brains of mice, contributing to neuroinflammation and other detrimental effects on brain function. 

In their latest study, they examined the long-term effects of glyphosate exposure on neuroinflammation and Alzheimer’s disease–like pathology using a mouse model.

They dosed 4.5-month-old mice genetically predisposed to Alzheimer’s disease and non-transgenic control mice with either 0, 50, or 500 mg/kg of glyphosate daily for 13 weeks followed by a 6-month recovery period. 

The high dose is similar to levels used in earlier research, and the low dose is close to the limit used to establish the current EPA acceptable dose in humans.

Glyphosate’s metabolite, aminomethylphosphonic acid, was detectable and persisted in mouse brain tissue even 6 months after exposure ceased, the researchers reported. 

Additionally, there was a significant increase in soluble and insoluble fractions of amyloid-beta (Abeta), Abeta42 plaque load and plaque size, and phosphorylated tau at Threonine 181 and Serine 396 in hippocampus and cortex brain tissue from glyphosate-exposed mice, “highlighting an exacerbation of hallmark Alzheimer’s disease–like proteinopathies,” they noted. 

Glyphosate exposure was also associated with significant elevations in both pro- and anti-inflammatory cytokines and chemokines in brain tissue of transgenic and normal mice and in peripheral blood plasma of transgenic mice. 

Glyphosate-exposed transgenic mice also showed heightened anxiety-like behaviors and reduced survival. 

“These findings highlight that many chemicals we regularly encounter, previously considered safe, may pose potential health risks,” co–senior author Patrick Pirrotte, PhD, with the Translational Genomics Research Institute, Phoenix, Arizona, said in a statement.

“However, further research is needed to fully assess the public health impact and identify safer alternatives,” Pirrotte added. 

Funding for the study was provided by the National Institutes on Aging, National Cancer Institute and the Arizona State University (ASU) Biodesign Institute. The authors have declared no relevant conflicts of interest.

A version of this article first appeared on Medscape.com.

Chronic exposure to glyphosate — the most widely used herbicide globally — may be a risk factor for Alzheimer’s disease, new research showed. 

Researchers found that glyphosate exposure even at regulated levels was associated with increased neuroinflammation and accelerated Alzheimer’s disease–like pathology in mice — an effect that persisted 6 months after a recovery period when exposure was stopped.

“More research is needed to understand the consequences of glyphosate exposure to the brain in humans and to understand the appropriate dose of exposure to limit detrimental outcomes,” said co–senior author Ramon Velazquez, PhD, with Arizona State University, Tempe.

The study was published online in The Journal of Neuroinflammation.

 

Persistent Accumulation Within the Brain

Glyphosate is the most heavily applied herbicide in the United States, with roughly 300 million pounds used annually in agricultural communities throughout the United States. It is also used for weed control in parks, residential areas, and personal gardens.

The Environmental Protection Agency (EPA) has determined that glyphosate poses no risks to human health when used as directed. But the World Health Organization’s International Agency for Research on Cancer disagrees, classifying the herbicide as “possibly carcinogenic to humans.”

In addition to the possible cancer risk, multiple reports have also suggested potential harmful effects of glyphosate exposure on the brain. 

In earlier work, Velazquez and colleagues showed that glyphosate crosses the blood-brain barrier and infiltrates the brains of mice, contributing to neuroinflammation and other detrimental effects on brain function. 

In their latest study, they examined the long-term effects of glyphosate exposure on neuroinflammation and Alzheimer’s disease–like pathology using a mouse model.

They dosed 4.5-month-old mice genetically predisposed to Alzheimer’s disease and non-transgenic control mice with either 0, 50, or 500 mg/kg of glyphosate daily for 13 weeks followed by a 6-month recovery period. 

The high dose is similar to levels used in earlier research, and the low dose is close to the limit used to establish the current EPA acceptable dose in humans.

Glyphosate’s metabolite, aminomethylphosphonic acid, was detectable and persisted in mouse brain tissue even 6 months after exposure ceased, the researchers reported. 

Additionally, there was a significant increase in soluble and insoluble fractions of amyloid-beta (Abeta), Abeta42 plaque load and plaque size, and phosphorylated tau at Threonine 181 and Serine 396 in hippocampus and cortex brain tissue from glyphosate-exposed mice, “highlighting an exacerbation of hallmark Alzheimer’s disease–like proteinopathies,” they noted. 

Glyphosate exposure was also associated with significant elevations in both pro- and anti-inflammatory cytokines and chemokines in brain tissue of transgenic and normal mice and in peripheral blood plasma of transgenic mice. 

Glyphosate-exposed transgenic mice also showed heightened anxiety-like behaviors and reduced survival. 

“These findings highlight that many chemicals we regularly encounter, previously considered safe, may pose potential health risks,” co–senior author Patrick Pirrotte, PhD, with the Translational Genomics Research Institute, Phoenix, Arizona, said in a statement.

“However, further research is needed to fully assess the public health impact and identify safer alternatives,” Pirrotte added. 

Funding for the study was provided by the National Institutes on Aging, National Cancer Institute and the Arizona State University (ASU) Biodesign Institute. The authors have declared no relevant conflicts of interest.

A version of this article first appeared on Medscape.com.

Chronic exposure to glyphosate — the most widely used herbicide globally — may be a risk factor for Alzheimer’s disease, new research showed. 

Researchers found that glyphosate exposure even at regulated levels was associated with increased neuroinflammation and accelerated Alzheimer’s disease–like pathology in mice — an effect that persisted 6 months after a recovery period when exposure was stopped.

“More research is needed to understand the consequences of glyphosate exposure to the brain in humans and to understand the appropriate dose of exposure to limit detrimental outcomes,” said co–senior author Ramon Velazquez, PhD, with Arizona State University, Tempe.

The study was published online in The Journal of Neuroinflammation.

 

Persistent Accumulation Within the Brain

Glyphosate is the most heavily applied herbicide in the United States, with roughly 300 million pounds used annually in agricultural communities throughout the United States. It is also used for weed control in parks, residential areas, and personal gardens.

The Environmental Protection Agency (EPA) has determined that glyphosate poses no risks to human health when used as directed. But the World Health Organization’s International Agency for Research on Cancer disagrees, classifying the herbicide as “possibly carcinogenic to humans.”

In addition to the possible cancer risk, multiple reports have also suggested potential harmful effects of glyphosate exposure on the brain. 

In earlier work, Velazquez and colleagues showed that glyphosate crosses the blood-brain barrier and infiltrates the brains of mice, contributing to neuroinflammation and other detrimental effects on brain function. 

In their latest study, they examined the long-term effects of glyphosate exposure on neuroinflammation and Alzheimer’s disease–like pathology using a mouse model.

They dosed 4.5-month-old mice genetically predisposed to Alzheimer’s disease and non-transgenic control mice with either 0, 50, or 500 mg/kg of glyphosate daily for 13 weeks followed by a 6-month recovery period. 

The high dose is similar to levels used in earlier research, and the low dose is close to the limit used to establish the current EPA acceptable dose in humans.

Glyphosate’s metabolite, aminomethylphosphonic acid, was detectable and persisted in mouse brain tissue even 6 months after exposure ceased, the researchers reported. 

Additionally, there was a significant increase in soluble and insoluble fractions of amyloid-beta (Abeta), Abeta42 plaque load and plaque size, and phosphorylated tau at Threonine 181 and Serine 396 in hippocampus and cortex brain tissue from glyphosate-exposed mice, “highlighting an exacerbation of hallmark Alzheimer’s disease–like proteinopathies,” they noted. 

Glyphosate exposure was also associated with significant elevations in both pro- and anti-inflammatory cytokines and chemokines in brain tissue of transgenic and normal mice and in peripheral blood plasma of transgenic mice. 

Glyphosate-exposed transgenic mice also showed heightened anxiety-like behaviors and reduced survival. 

“These findings highlight that many chemicals we regularly encounter, previously considered safe, may pose potential health risks,” co–senior author Patrick Pirrotte, PhD, with the Translational Genomics Research Institute, Phoenix, Arizona, said in a statement.

“However, further research is needed to fully assess the public health impact and identify safer alternatives,” Pirrotte added. 

Funding for the study was provided by the National Institutes on Aging, National Cancer Institute and the Arizona State University (ASU) Biodesign Institute. The authors have declared no relevant conflicts of interest.

A version of this article first appeared on Medscape.com.

TOPLINE:

Consuming five or more servings per week of dark chocolate is associated with a lower risk for type 2 diabetes (T2D), compared with infrequent or no consumption. Conversely, a higher consumption of milk chocolate does not significantly affect the risk for diabetes and may contribute to greater weight gain.

METHODOLOGY:

• Chocolate is rich in flavanols, natural compounds known to support heart health and lower the risk for T2D. However, the link between chocolate consumption and the risk for T2D is uncertain, with inconsistent research findings that don’t distinguish between dark or milk chocolate.
• Researchers conducted a prospective cohort study to investigate the associations between dark, milk, and total chocolate consumption and the risk for T2D in three long-term US studies of female nurses and male healthcare professionals with no history of diabetes, cardiovascular disease, or cancer at baseline.
• The relationship between total chocolate consumption and the risk for diabetes was investigated in 192,208 individuals who reported their chocolate consumption using validated food frequency questionnaires every 4 years from 1986 onward.
• Information on chocolate subtypes was assessed from 2006/2007 onward in 111,654 participants.
• Participants self-reported T2D through biennial questionnaires, which was confirmed via supplementary questionnaires collecting data on glucose levels, hemoglobin A1c concentration, symptoms, and treatments; they also self-reported their body weight at baseline and during follow-ups.

TAKEAWAY:

• During 4,829,175 person-years of follow-up, researchers identified 18,862 individuals with incident T2D in the total chocolate analysis cohort.
• In the chocolate subtype cohort, 4771 incident T2D cases were identified during 1,270,348 person-years of follow-up. Having at least five servings per week of dark chocolate was associated with a 21% lower risk for T2D (adjusted hazard ratio, 0.79; P for trend = .006), while milk chocolate consumption showed no significant link (P for trend = .75).
• The risk for T2D decreased by 3% for each additional serving of dark chocolate consumed weekly, indicating a dose-response effect.
• Compared with individuals who did not change their chocolate intake, those who had an increased milk chocolate intake had greater weight gain over 4-year periods (mean difference, 0.35 kg; 95% CI, 0.27-0.43); dark chocolate showed no significant association with weight change.

IN PRACTICE:

“Even though dark and milk chocolate have similar levels of calories and saturated fat, it appears that the rich polyphenols in dark chocolate might offset the effects of saturated fat and sugar on weight gain and diabetes. It’s an intriguing difference that’s worth exploring more,” corresponding author Qi Sun from the Departments of Nutrition and Epidemiology, Harvard TH Chan School of Public Health, Boston, Massachusetts, said in a press release.

SOURCE:

This study was led by Binkai Liu, Harvard TH Chan School of Public Health. It was published online in The BMJ.

LIMITATIONS:

The relatively limited number of participants in the higher chocolate consumption groups may have reduced the statistical power for detecting modest associations between dark chocolate consumption and the risk for T2D. Additionally, the study population primarily consisted of non-Hispanic White adults older than 50 years at baseline, which, along with their professional backgrounds, may have limited the generalizability of the study findings to other populations with different socioeconomic or personal characteristics. Chocolate consumption in this study was lower than the national average of three servings per week, which may have limited the ability to assess the dose-response relationship at higher intake levels.

DISCLOSURES:

This study was supported by grants from the National Institutes of Health. Some authors reported receiving investigator-initiated grants, being on scientific advisory boards, and receiving research funding from certain institutions.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

Consuming five or more servings per week of dark chocolate is associated with a lower risk for type 2 diabetes (T2D), compared with infrequent or no consumption. Conversely, a higher consumption of milk chocolate does not significantly affect the risk for diabetes and may contribute to greater weight gain.

METHODOLOGY:

• Chocolate is rich in flavanols, natural compounds known to support heart health and lower the risk for T2D. However, the link between chocolate consumption and the risk for T2D is uncertain, with inconsistent research findings that don’t distinguish between dark or milk chocolate.
• Researchers conducted a prospective cohort study to investigate the associations between dark, milk, and total chocolate consumption and the risk for T2D in three long-term US studies of female nurses and male healthcare professionals with no history of diabetes, cardiovascular disease, or cancer at baseline.
• The relationship between total chocolate consumption and the risk for diabetes was investigated in 192,208 individuals who reported their chocolate consumption using validated food frequency questionnaires every 4 years from 1986 onward.
• Information on chocolate subtypes was assessed from 2006/2007 onward in 111,654 participants.
• Participants self-reported T2D through biennial questionnaires, which was confirmed via supplementary questionnaires collecting data on glucose levels, hemoglobin A1c concentration, symptoms, and treatments; they also self-reported their body weight at baseline and during follow-ups.

TAKEAWAY:

• During 4,829,175 person-years of follow-up, researchers identified 18,862 individuals with incident T2D in the total chocolate analysis cohort.
• In the chocolate subtype cohort, 4771 incident T2D cases were identified during 1,270,348 person-years of follow-up. Having at least five servings per week of dark chocolate was associated with a 21% lower risk for T2D (adjusted hazard ratio, 0.79; P for trend = .006), while milk chocolate consumption showed no significant link (P for trend = .75).
• The risk for T2D decreased by 3% for each additional serving of dark chocolate consumed weekly, indicating a dose-response effect.
• Compared with individuals who did not change their chocolate intake, those who had an increased milk chocolate intake had greater weight gain over 4-year periods (mean difference, 0.35 kg; 95% CI, 0.27-0.43); dark chocolate showed no significant association with weight change.

IN PRACTICE:

“Even though dark and milk chocolate have similar levels of calories and saturated fat, it appears that the rich polyphenols in dark chocolate might offset the effects of saturated fat and sugar on weight gain and diabetes. It’s an intriguing difference that’s worth exploring more,” corresponding author Qi Sun from the Departments of Nutrition and Epidemiology, Harvard TH Chan School of Public Health, Boston, Massachusetts, said in a press release.

SOURCE:

This study was led by Binkai Liu, Harvard TH Chan School of Public Health. It was published online in The BMJ.

LIMITATIONS:

The relatively limited number of participants in the higher chocolate consumption groups may have reduced the statistical power for detecting modest associations between dark chocolate consumption and the risk for T2D. Additionally, the study population primarily consisted of non-Hispanic White adults older than 50 years at baseline, which, along with their professional backgrounds, may have limited the generalizability of the study findings to other populations with different socioeconomic or personal characteristics. Chocolate consumption in this study was lower than the national average of three servings per week, which may have limited the ability to assess the dose-response relationship at higher intake levels.

DISCLOSURES:

This study was supported by grants from the National Institutes of Health. Some authors reported receiving investigator-initiated grants, being on scientific advisory boards, and receiving research funding from certain institutions.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

Consuming five or more servings per week of dark chocolate is associated with a lower risk for type 2 diabetes (T2D), compared with infrequent or no consumption. Conversely, a higher consumption of milk chocolate does not significantly affect the risk for diabetes and may contribute to greater weight gain.

METHODOLOGY:

• Chocolate is rich in flavanols, natural compounds known to support heart health and lower the risk for T2D. However, the link between chocolate consumption and the risk for T2D is uncertain, with inconsistent research findings that don’t distinguish between dark or milk chocolate.
• Researchers conducted a prospective cohort study to investigate the associations between dark, milk, and total chocolate consumption and the risk for T2D in three long-term US studies of female nurses and male healthcare professionals with no history of diabetes, cardiovascular disease, or cancer at baseline.
• The relationship between total chocolate consumption and the risk for diabetes was investigated in 192,208 individuals who reported their chocolate consumption using validated food frequency questionnaires every 4 years from 1986 onward.
• Information on chocolate subtypes was assessed from 2006/2007 onward in 111,654 participants.
• Participants self-reported T2D through biennial questionnaires, which was confirmed via supplementary questionnaires collecting data on glucose levels, hemoglobin A1c concentration, symptoms, and treatments; they also self-reported their body weight at baseline and during follow-ups.

TAKEAWAY:

• During 4,829,175 person-years of follow-up, researchers identified 18,862 individuals with incident T2D in the total chocolate analysis cohort.
• In the chocolate subtype cohort, 4771 incident T2D cases were identified during 1,270,348 person-years of follow-up. Having at least five servings per week of dark chocolate was associated with a 21% lower risk for T2D (adjusted hazard ratio, 0.79; P for trend = .006), while milk chocolate consumption showed no significant link (P for trend = .75).
• The risk for T2D decreased by 3% for each additional serving of dark chocolate consumed weekly, indicating a dose-response effect.
• Compared with individuals who did not change their chocolate intake, those who had an increased milk chocolate intake had greater weight gain over 4-year periods (mean difference, 0.35 kg; 95% CI, 0.27-0.43); dark chocolate showed no significant association with weight change.

IN PRACTICE:

“Even though dark and milk chocolate have similar levels of calories and saturated fat, it appears that the rich polyphenols in dark chocolate might offset the effects of saturated fat and sugar on weight gain and diabetes. It’s an intriguing difference that’s worth exploring more,” corresponding author Qi Sun from the Departments of Nutrition and Epidemiology, Harvard TH Chan School of Public Health, Boston, Massachusetts, said in a press release.

SOURCE:

This study was led by Binkai Liu, Harvard TH Chan School of Public Health. It was published online in The BMJ.

LIMITATIONS:

The relatively limited number of participants in the higher chocolate consumption groups may have reduced the statistical power for detecting modest associations between dark chocolate consumption and the risk for T2D. Additionally, the study population primarily consisted of non-Hispanic White adults older than 50 years at baseline, which, along with their professional backgrounds, may have limited the generalizability of the study findings to other populations with different socioeconomic or personal characteristics. Chocolate consumption in this study was lower than the national average of three servings per week, which may have limited the ability to assess the dose-response relationship at higher intake levels.

DISCLOSURES:

This study was supported by grants from the National Institutes of Health. Some authors reported receiving investigator-initiated grants, being on scientific advisory boards, and receiving research funding from certain institutions.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

Lichen planus (LP) affects an estimated 0.15% of US adults, and more than half of patients do not receive treatment within a year of diagnosis by a dermatologist.

METHODOLOGY:

• To evaluate the prevalence of LP, researchers analyzed 566,851 eligible patients from the Explorys database, comprising electronic medical records from over 40 healthcare networks and 53 million patients across the United States.
• They also assessed treatment plans separately among 1998 newly diagnosed patients with LP between October 2015 and January 2020, who required at least one dermatology encounter within the first year following diagnosis.
• The primary outcome was overall prevalence of LP in the United States, including prevalence across specific age, sex, and racial subgroups. Additionally, dermatologist-prescribed treatments for non-oral LP were also reported.

TAKEAWAY:

• Overall, there were 1098 cases of LP (median age, 66 years; 74% women); the crude prevalence of LP was 0.19% and the age- and sex-standardized overall prevalence was 0.15%. Prevalence in women was 1.77 times higher than in men.
• Asian patients showed the highest standardized prevalence (0.2%), followed by Black patients (0.16). Prevalence increased with age, ranging from 0.04% among those aged 18-29 years to 0.26% among those aged 60-69 years and 0.33% among those aged 70-79 years.

IN PRACTICE:

“LP is a fairly common disease, which disproportionately affects women and individuals older than 60 years of age,” the authors wrote. “Future research to help identify patients who may need systemic treatment and determine appropriate treatments for patients with LP to limit sequelae is important as no medication is currently FDA approved for LP.”

SOURCE:

The study was led by Natalia Pelet Del Toro, MD, Department of Dermatology, Northwell Health, New Hyde Park, New York, and was published online in The Journal of the American Academy of Dermatology.

LIMITATIONS:

The absence of a precise diagnosis code for non-oral LP introduces potential misclassification risks. Additionally, the study design did not allow for the establishment of disease severity levels, limiting the ability to correlate treatment choices with disease severity.

DISCLOSURES:

The study did not receive any funding. Two authors reported to have received advisory fees, grants, and/or honoraria from several pharmaceutical companies. Pelet Del Toro and another author did not declare any conflict of interests.

This article was created using several editorial tools, including artificial intelligence, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

Lichen planus (LP) affects an estimated 0.15% of US adults, and more than half of patients do not receive treatment within a year of diagnosis by a dermatologist.

METHODOLOGY:

• To evaluate the prevalence of LP, researchers analyzed 566,851 eligible patients from the Explorys database, comprising electronic medical records from over 40 healthcare networks and 53 million patients across the United States.
• They also assessed treatment plans separately among 1998 newly diagnosed patients with LP between October 2015 and January 2020, who required at least one dermatology encounter within the first year following diagnosis.
• The primary outcome was overall prevalence of LP in the United States, including prevalence across specific age, sex, and racial subgroups. Additionally, dermatologist-prescribed treatments for non-oral LP were also reported.

TAKEAWAY:

• Overall, there were 1098 cases of LP (median age, 66 years; 74% women); the crude prevalence of LP was 0.19% and the age- and sex-standardized overall prevalence was 0.15%. Prevalence in women was 1.77 times higher than in men.
• Asian patients showed the highest standardized prevalence (0.2%), followed by Black patients (0.16). Prevalence increased with age, ranging from 0.04% among those aged 18-29 years to 0.26% among those aged 60-69 years and 0.33% among those aged 70-79 years.

IN PRACTICE:

“LP is a fairly common disease, which disproportionately affects women and individuals older than 60 years of age,” the authors wrote. “Future research to help identify patients who may need systemic treatment and determine appropriate treatments for patients with LP to limit sequelae is important as no medication is currently FDA approved for LP.”

SOURCE:

The study was led by Natalia Pelet Del Toro, MD, Department of Dermatology, Northwell Health, New Hyde Park, New York, and was published online in The Journal of the American Academy of Dermatology.

LIMITATIONS:

The absence of a precise diagnosis code for non-oral LP introduces potential misclassification risks. Additionally, the study design did not allow for the establishment of disease severity levels, limiting the ability to correlate treatment choices with disease severity.

DISCLOSURES:

The study did not receive any funding. Two authors reported to have received advisory fees, grants, and/or honoraria from several pharmaceutical companies. Pelet Del Toro and another author did not declare any conflict of interests.

This article was created using several editorial tools, including artificial intelligence, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

Lichen planus (LP) affects an estimated 0.15% of US adults, and more than half of patients do not receive treatment within a year of diagnosis by a dermatologist.

METHODOLOGY:

• To evaluate the prevalence of LP, researchers analyzed 566,851 eligible patients from the Explorys database, comprising electronic medical records from over 40 healthcare networks and 53 million patients across the United States.
• They also assessed treatment plans separately among 1998 newly diagnosed patients with LP between October 2015 and January 2020, who required at least one dermatology encounter within the first year following diagnosis.
• The primary outcome was overall prevalence of LP in the United States, including prevalence across specific age, sex, and racial subgroups. Additionally, dermatologist-prescribed treatments for non-oral LP were also reported.

TAKEAWAY:

• Overall, there were 1098 cases of LP (median age, 66 years; 74% women); the crude prevalence of LP was 0.19% and the age- and sex-standardized overall prevalence was 0.15%. Prevalence in women was 1.77 times higher than in men.
• Asian patients showed the highest standardized prevalence (0.2%), followed by Black patients (0.16). Prevalence increased with age, ranging from 0.04% among those aged 18-29 years to 0.26% among those aged 60-69 years and 0.33% among those aged 70-79 years.

IN PRACTICE:

“LP is a fairly common disease, which disproportionately affects women and individuals older than 60 years of age,” the authors wrote. “Future research to help identify patients who may need systemic treatment and determine appropriate treatments for patients with LP to limit sequelae is important as no medication is currently FDA approved for LP.”

SOURCE:

The study was led by Natalia Pelet Del Toro, MD, Department of Dermatology, Northwell Health, New Hyde Park, New York, and was published online in The Journal of the American Academy of Dermatology.

LIMITATIONS:

The absence of a precise diagnosis code for non-oral LP introduces potential misclassification risks. Additionally, the study design did not allow for the establishment of disease severity levels, limiting the ability to correlate treatment choices with disease severity.

DISCLOSURES:

The study did not receive any funding. Two authors reported to have received advisory fees, grants, and/or honoraria from several pharmaceutical companies. Pelet Del Toro and another author did not declare any conflict of interests.

This article was created using several editorial tools, including artificial intelligence, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

This video transcript has been edited for clarity. 

Robert D. Glatter, MD: Hi and welcome. I’m Dr. Robert Glatter, medical adviser for Medscape Emergency Medicine. Joining me today to discuss a novel, plant-based approach to stopping moderate to severe bleeding is Joe Landolina, CEO and cofounder of Cresilon. Welcome, Joe. 

Joe Landolina, MS: Thank you so much for taking the time. It’s great to be here.

Educational Background and Inception of Cresilon

Glatter: It’s a pleasure to have you join me, and I want to congratulate you on your recent 510(k) FDA clearance for your novel product to save lives and stop bleeding. To begin with, can you explain how the idea for launching your company came about? 

Landolina: The way that Cresilon came about was a little bit unorthodox, because I was 17 years old when I invented the technology behind the product that eventually became Traumagel®. 

My grandfather was an ex-pharmaceutical executive, who later in life started a vineyard. I grew up on a vineyard with a winery chemistry lab across the street from my house and a grandfather who learned lab safety in the 60s. So, that meant that the day I learned how to walk, I was tossed into a lab and I fell head over heels in love with lab research.

That started experimentation and my academic pursuits. That led to discovering a blend of two plant-based polymers derived from algae that stop bleeding on contact, effectively creating a mechanical barrier and allowing anything from a gunshot wound to anything quite a bit more minor to stop in a matter of seconds.

Glatter: Your background is in biomedical engineering. How is it that you started tinkering and doing all this type of work? 

Landolina: That’s correct. I did my undergrad in chemical engineering, and my graduate studies were in biomedical engineering. For me, that was supposed to be a pathway into medical school. I always wanted to be a surgeon myself, and I love the field of medicine. 

As a freshman in college at NYU Engineering, I had this idea. I entered it into NYU’s business plan competition, and we won at the engineering school. That gave us just enough capital to start developing and researching Traumagel more, and Cresilon was born out of that research.

 

Techniques for Stopping Hemorrhage

Glatter: In terms of stopping hemorrhage, which takes so many lives in the United States and globally — certainly, uncontrolled hemorrhage — what are the techniques that you see, prior to the arrival of your product, as being effective? Can you elucidate some of these techniques? 

Landolina: In emergency medicine, the primary mode of controlling hemorrhage is passive. It’s what, in Brooklyn, we like to call “pressure and a prayer”, where you have a material that’s either gauze or an impregnated gauze in most cases, where the mode of action is absorbing blood, with the adjunct of pressure by the first responder or by the clinician who’s providing aid.

The idea is to stop the flow of blood to concentrate blood factors at the surface of the gauze product, and to promote either platelet activation or the production of fibrin to create a clot. 

These types of technologies are widespread. There are many versions of this technology carried by EMS agencies, trauma bays, US military soldiers, and soldiers across NATO countries. But these types of technologies tend to be relatively inefficient, meaning that they’re very difficult to get into wounds because of the gauze or the powder form of the devices, and it’s very hard to get them in contact with the form of bleeding.

On top of that, if the patient is clotting compromised or immunocompromised in some way, the ability to create a durable clot that will not be ripped off when you remove the product at the next level of care is also of concern. And so, this type of technology or the type of treatment of massive hemorrhage hasn’t changed in decades.

 

Current Applications and Potential Use

Glatter: I envision this product will be carried by paramedics, used on the battlefield at some point after your FDA clearance, and recently it went through.

Do you see any possibility that this could be an AED equivalent to Stop the Bleed? In other words, could the average lay person be trained to use your product if kits are available? 

Landolina: To be very clear, Traumagel today is only approved or cleared under a “prescription-only” indication, which means that it will not initially be available OTC. However, that is our goal. Our goal is to make this product available and usable by someone with no medical training whatsoever. 

The form factor of being a gel in a syringe lends itself well to that, meaning that we try to make it as easy as point and shoot to control hemorrhage, where there’s not as much technique to be learned in the application of a product like Traumagel as there is in current hemorrhage control techniques. 

 

Mechanism of Action and Physiology

Glatter: Once you apply Traumagel, can you explain what happens to the product after it’s applied and the bleeding has stopped? Does it get reabsorbed by the body? What’s the process here? 

Landolina: Under Traumagel’s indication, because it’s used in traumatic injury, it must be removed within 24 hours.

One of the big benefits of Traumagel is that when the patient produces a blood clot underneath Traumagel, it doesn’t become incorporated within the gel itself. To contrast that with the use of gauze, gauze is porous. The clot ends up wrapped around the fibers of the gauze, so if you peel the gauze away, it’s very likely that clot is coming off with it. The surgeon or the clinician at the next level of care is going to have to deal with the re-bleed. 

You can remove Traumagel cleanly and entirely without disturbing the underlying clot. That’s a major benefit, not only to the patient but also to the next level of care, to the next clinician or physician that is required to remove the product.

Glatter: How is it possible to remove the substance without disturbing the clot? Can you explain in more detail? 

Landolina: That’s one of the hallmarks of these plant-based polymers and the way that we design Traumagel itself. Traumagel is completely nonporous, and it has no fibrous nature to it. What that means is when the patient produces a blood clot or fibrin next to or on top of Traumagel, that fibrin ends up not incorporated within the polymers of Traumagel itself. 

Over time, because Traumagel is a hydrogel, meaning that by weight it’s mostly water, you end up having less adhesion to the clot over time. When it’s time to remove Traumagel from the injury, it has lost almost all of its adhesive capabilities, meaning that when you peel it away, that clot is going to stick better to tissue than it will to the gel itself. 

Glatter: Can you explain a little bit about the matrix that’s formed, the physiology, and how the polymers work to form this matrix? 

Landolina: Sure. Traumagel is made of two polysaccharides that are plant derived. One polysaccharide is polyanionic, and the other is polycationic, meaning one has negative charges and the other has positive charges, which together create almost a Lego block effect, where when the material comes in contact with tissue, it adheres strongly and allows for itself to effectively create a mechanical barrier against bleeding.

Courtesy of Cresilon

Landolina: Even in the face of major arterial blood flow, Traumagel will stay where it needs to stay, and it’s not going to get washed away. This means that it is much more easily appliable to these types of surfaces and will allow the patient to produce their own endogenous fibrin clot at that location.

Like I mentioned before, when that fibrin clot is formed, because the gel itself has no pores or fibers, it doesn’t become incorporated within the fibrin clot. You can take the gel away, leaving that clot behind without the chance of a rebleed.

 

Testing With Major Bleeds

Glatter: In terms of bleeding itself, have you tested your product with major aortic bleeds or carotid bleeds in preclinical work?

Landolina: We have used the US military’s model for lethal hemorrhage, and the idea there is to create a model that is just that — lethal. These are the worst types of bleeds that you can possibly imagine, where the patients are clotting compromised, and where you have, in most cases, a very strong arterial component, so something like a femoral artery bleed.

We’ve also tested in carotid artery, aortic applications, as well as combinations of venous and arterial bleeds. The idea here is to show the use of the product in the absolute worst-case scenario so that when this translates into the clinic, the models that we’ve used for evaluation, hopefully, are worse than what actually rolls into the trauma bay.

Glatter: Excellent. What’s the mean time to stop an arterial vs a venous bleed? Are we talking a matter of seconds?

Landolina: In the case of a healthy patient, meaning a patient without clotting compromise, you’re in a matter of seconds. It’s less than 10 seconds. 

In the case where you have clotting compromise, a deep, complicated wound geometry, we recommend holding a pressure bandage on for 3 minutes just because it increases the chance of Traumagel coming into contact with the bleed, especially when you can’t visualize the bleed in the bleed source. Because of that pressure time, that becomes the mean. But again, it’s highly dependent on the type of bleed and the style of application.

 

Failure Rates and Effectiveness

Glatter: As a segue to that, what is the failure rate based on your studies and internal research using Traumagel? Have there been cases where bleeding has not been able to be stopped? 

Landolina: It depends on the study, but the failure rates are incredibly low with Traumagel, assuming that it’s correctly used. That’s one of the benefits to this product, where with proper technique, with overwrap with gauze, you nearly always get control of hemorrhage with a product like this. 

Glatter: Is manual pressure required in that sense? From what you described earlier, manual pressure would not be required. 

Landolina: It depends on the injury. What we recommend is that, if you have a very deep wound where you cannot visualize the source of bleed, you use pressure to seat Traumagel into the source of bleeding, meaning that you’re following Committee on Tactical Combat Casualty Care (Co-TCCC) regulations or requirements, where you’re over wrapping with gauze, and you’re providing a pressure wrapping to ensure that the Traumagel is in contact with the bleed while it’s doing what it’s doing. 

In most cases, it doesn’t hurt to apply pressure on top of Traumagel as well. In more surface level bleeds, you don’t need pressure at all. 

 

Applications Beyond Trauma

Glatter: Interesting. In terms of further applications (eg, nose bleeds or GYN bleeding, which are life-threatening), do you see this coming as an application for the future? 

Landolina: That’s where we’re working. Traumagel is the successor to an animal health product called Vetigel. The formulations of the gel behind Vetigel and Traumagel are identical. Vetigel has a full surgical indication, and that’s everything from epistaxis to neuro and spine procedures, into cardiovascular and soft tissue surgeries, orthopedic medicine, and so on.

Cresilon’s goal is to eventually expand the indication of our technology to include surgical indications and other indications where we can help any patient that’s bleeding. 

Glatter: That’s important, because we use prehospital whole blood, low titer, specifically, when patients have life-threatening hemorrhage. With your product, that would reduce the amount of blood products that would need to be administered. This could be a real game changer. 

Landolina: Definitely, that’s the goal we’re working on. 

Infection Risks and Biocompatibility

Glatter: In terms of any risk for infection, has that been studied as well? Does Traumagel in any way lead to increased rates of infection?

Landolina: Traumagel is biocompatible. It’s a sterile product. We’ve done the full suite of biocompatibility testing as required by FDA. On top of that, remember that Vetigel, which is the same formulation, is an implantable product. As a result, that has even extended biocompatibility testing beyond what would be necessary for an external product.

In Vetigel’s use case, which has been used now in over 60,000 patients, primarily companion animals, dogs and cats, we haven’t seen instances of infection. There’s no reason to believe that we would see that clinically with Traumagel.

 

Research Collaborations and Future Applications

Glatter: In terms of other research that your company’s embarked on preclinically, I understand there were some studies done at Walter Reed Army Institute of Research. I was wondering if you could expand on these, specifically, in terms of traumatic brain injury (TBI) and hemorrhage related to that. For example, with shrapnel or even a gunshot wound. 

Landolina: The Walter Reed collaboration with Cresilon is something that I’m particularly excited about, because it marks Cresilon’s first project that’s outside the scope of just hemostasis. Walter Reed came to us with this proposal where there’s a big challenge in a subset of TBI called penetrating ballistic-like brain injury, where the brain has been penetrated by a bullet, shrapnel, or some other projectile, and there’s an injury that exposes the brain to the outside. 

Today, there is no standard of care to treat patients with those types of injuries. In many cases, mortality is caused through swelling of the brain, or collapse of the brain. What they came to us with was the potential of using our technology, not primarily as a hemostatic agent, but to be able to stabilize that patient enough to get to the next level of care to be treated by a neurosurgeon.

That study Walter Reed did was just a pilot that was done in small animals. In that pilot, they showed that over the period of treatment, there was no negative change in vital signs, no increase in edema or in swelling, or in any of the biomarkers that were being monitored at that time. 

At the very least, this is not full indication that this indication will work for Cresilon, but it shows that there’s promise. It’s something that we’re working on and hopefully we’ll be able to bring to market soon.

Glatter: Certainly, maintaining intracranial pressure and cerebral perfusion pressures are very critical. In the future, do you think this product would be able to be deployed endovascularly? Imagine this in terms of stopping bleeding from some source, whether it’s from a stroke or another intracranial source. 

Landolina: That’s been an area of interest for us. We have no evidence to prove that indication works at this point, but there’s also nothing to say that it wouldn’t be possible for our technology. At this point, we’ve only looked at a cursory level at those indications. 

Glatter: Does the use of Traumagel obviate the need for a more definitive repair (eg, with sutures) or something that’s more permanent?

Landolina: I always say that Traumagel — and Vetigel, for that matter — is not a replacement for good surgical technique. The surgeon always needs to make his or her best judgment when reviewing the patient. That doesn’t mean that there won’t need to be sutures or vascular repair in most of these cases, especially in major trauma.

Final Takeaways

Glatter: Do you have some bullet points or pearls you could give our audience as a takeaway? 

Landolina: When Cresilon looks at Traumagel — and for us, Traumagel is the next generation of hemostatic agent, especially in trauma care and in emergency medicine — it allows for a far-simplified application of the product and much faster control of hemorrhage with better patient outcomes.

As we roll this out through EMS agencies, trauma hospitals, military agencies, and eventually to the general public through a future indication, it’s something we’re very excited about. Personally, I started this business 14 years ago, and so it’s great to see our mission of saving lives transitioning to saving human lives.

Glatter: I look forward to seeing this product in the emergency department, but also in other settings, such as in the operating room where we can really help patients who are dying from hemorrhage, certainly on the battlefield, and the lay public. If someone were to come upon a patient who’s bleeding out, this could be certainly a game changer and a lifesaver. 

I want to thank you for your time. This is a really important product that’s transformed the lives of so many animals, but also people in the future.

Dr. Glatter is an assistant professor of emergency medicine at Zucker School of Medicine at Hofstra/Northwell in Hempstead, New York. He reported no relevant conflicts of interest. Mr. Landolina is the CEO and co-founder of Cresilon, a biotechnology company specializing in plant-based solutions for emergency bleeding control.

A version of this article first appeared on Medscape.com.

This video transcript has been edited for clarity. 

Robert D. Glatter, MD: Hi and welcome. I’m Dr. Robert Glatter, medical adviser for Medscape Emergency Medicine. Joining me today to discuss a novel, plant-based approach to stopping moderate to severe bleeding is Joe Landolina, CEO and cofounder of Cresilon. Welcome, Joe. 

Joe Landolina, MS: Thank you so much for taking the time. It’s great to be here.

Educational Background and Inception of Cresilon

Glatter: It’s a pleasure to have you join me, and I want to congratulate you on your recent 510(k) FDA clearance for your novel product to save lives and stop bleeding. To begin with, can you explain how the idea for launching your company came about? 

Landolina: The way that Cresilon came about was a little bit unorthodox, because I was 17 years old when I invented the technology behind the product that eventually became Traumagel®. 

My grandfather was an ex-pharmaceutical executive, who later in life started a vineyard. I grew up on a vineyard with a winery chemistry lab across the street from my house and a grandfather who learned lab safety in the 60s. So, that meant that the day I learned how to walk, I was tossed into a lab and I fell head over heels in love with lab research.

That started experimentation and my academic pursuits. That led to discovering a blend of two plant-based polymers derived from algae that stop bleeding on contact, effectively creating a mechanical barrier and allowing anything from a gunshot wound to anything quite a bit more minor to stop in a matter of seconds.

Glatter: Your background is in biomedical engineering. How is it that you started tinkering and doing all this type of work? 

Landolina: That’s correct. I did my undergrad in chemical engineering, and my graduate studies were in biomedical engineering. For me, that was supposed to be a pathway into medical school. I always wanted to be a surgeon myself, and I love the field of medicine. 

As a freshman in college at NYU Engineering, I had this idea. I entered it into NYU’s business plan competition, and we won at the engineering school. That gave us just enough capital to start developing and researching Traumagel more, and Cresilon was born out of that research.

 

Techniques for Stopping Hemorrhage

Glatter: In terms of stopping hemorrhage, which takes so many lives in the United States and globally — certainly, uncontrolled hemorrhage — what are the techniques that you see, prior to the arrival of your product, as being effective? Can you elucidate some of these techniques? 

Landolina: In emergency medicine, the primary mode of controlling hemorrhage is passive. It’s what, in Brooklyn, we like to call “pressure and a prayer”, where you have a material that’s either gauze or an impregnated gauze in most cases, where the mode of action is absorbing blood, with the adjunct of pressure by the first responder or by the clinician who’s providing aid.

The idea is to stop the flow of blood to concentrate blood factors at the surface of the gauze product, and to promote either platelet activation or the production of fibrin to create a clot. 

These types of technologies are widespread. There are many versions of this technology carried by EMS agencies, trauma bays, US military soldiers, and soldiers across NATO countries. But these types of technologies tend to be relatively inefficient, meaning that they’re very difficult to get into wounds because of the gauze or the powder form of the devices, and it’s very hard to get them in contact with the form of bleeding.

On top of that, if the patient is clotting compromised or immunocompromised in some way, the ability to create a durable clot that will not be ripped off when you remove the product at the next level of care is also of concern. And so, this type of technology or the type of treatment of massive hemorrhage hasn’t changed in decades.

 

Current Applications and Potential Use

Glatter: I envision this product will be carried by paramedics, used on the battlefield at some point after your FDA clearance, and recently it went through.

Do you see any possibility that this could be an AED equivalent to Stop the Bleed? In other words, could the average lay person be trained to use your product if kits are available? 

Landolina: To be very clear, Traumagel today is only approved or cleared under a “prescription-only” indication, which means that it will not initially be available OTC. However, that is our goal. Our goal is to make this product available and usable by someone with no medical training whatsoever. 

The form factor of being a gel in a syringe lends itself well to that, meaning that we try to make it as easy as point and shoot to control hemorrhage, where there’s not as much technique to be learned in the application of a product like Traumagel as there is in current hemorrhage control techniques. 

 

Mechanism of Action and Physiology

Glatter: Once you apply Traumagel, can you explain what happens to the product after it’s applied and the bleeding has stopped? Does it get reabsorbed by the body? What’s the process here? 

Landolina: Under Traumagel’s indication, because it’s used in traumatic injury, it must be removed within 24 hours.

One of the big benefits of Traumagel is that when the patient produces a blood clot underneath Traumagel, it doesn’t become incorporated within the gel itself. To contrast that with the use of gauze, gauze is porous. The clot ends up wrapped around the fibers of the gauze, so if you peel the gauze away, it’s very likely that clot is coming off with it. The surgeon or the clinician at the next level of care is going to have to deal with the re-bleed. 

You can remove Traumagel cleanly and entirely without disturbing the underlying clot. That’s a major benefit, not only to the patient but also to the next level of care, to the next clinician or physician that is required to remove the product.

Glatter: How is it possible to remove the substance without disturbing the clot? Can you explain in more detail? 

Landolina: That’s one of the hallmarks of these plant-based polymers and the way that we design Traumagel itself. Traumagel is completely nonporous, and it has no fibrous nature to it. What that means is when the patient produces a blood clot or fibrin next to or on top of Traumagel, that fibrin ends up not incorporated within the polymers of Traumagel itself. 

Over time, because Traumagel is a hydrogel, meaning that by weight it’s mostly water, you end up having less adhesion to the clot over time. When it’s time to remove Traumagel from the injury, it has lost almost all of its adhesive capabilities, meaning that when you peel it away, that clot is going to stick better to tissue than it will to the gel itself. 

Glatter: Can you explain a little bit about the matrix that’s formed, the physiology, and how the polymers work to form this matrix? 

Landolina: Sure. Traumagel is made of two polysaccharides that are plant derived. One polysaccharide is polyanionic, and the other is polycationic, meaning one has negative charges and the other has positive charges, which together create almost a Lego block effect, where when the material comes in contact with tissue, it adheres strongly and allows for itself to effectively create a mechanical barrier against bleeding.

Courtesy of Cresilon

Landolina: Even in the face of major arterial blood flow, Traumagel will stay where it needs to stay, and it’s not going to get washed away. This means that it is much more easily appliable to these types of surfaces and will allow the patient to produce their own endogenous fibrin clot at that location.

Like I mentioned before, when that fibrin clot is formed, because the gel itself has no pores or fibers, it doesn’t become incorporated within the fibrin clot. You can take the gel away, leaving that clot behind without the chance of a rebleed.

 

Testing With Major Bleeds

Glatter: In terms of bleeding itself, have you tested your product with major aortic bleeds or carotid bleeds in preclinical work?

Landolina: We have used the US military’s model for lethal hemorrhage, and the idea there is to create a model that is just that — lethal. These are the worst types of bleeds that you can possibly imagine, where the patients are clotting compromised, and where you have, in most cases, a very strong arterial component, so something like a femoral artery bleed.

We’ve also tested in carotid artery, aortic applications, as well as combinations of venous and arterial bleeds. The idea here is to show the use of the product in the absolute worst-case scenario so that when this translates into the clinic, the models that we’ve used for evaluation, hopefully, are worse than what actually rolls into the trauma bay.

Glatter: Excellent. What’s the mean time to stop an arterial vs a venous bleed? Are we talking a matter of seconds?

Landolina: In the case of a healthy patient, meaning a patient without clotting compromise, you’re in a matter of seconds. It’s less than 10 seconds. 

In the case where you have clotting compromise, a deep, complicated wound geometry, we recommend holding a pressure bandage on for 3 minutes just because it increases the chance of Traumagel coming into contact with the bleed, especially when you can’t visualize the bleed in the bleed source. Because of that pressure time, that becomes the mean. But again, it’s highly dependent on the type of bleed and the style of application.

 

Failure Rates and Effectiveness

Glatter: As a segue to that, what is the failure rate based on your studies and internal research using Traumagel? Have there been cases where bleeding has not been able to be stopped? 

Landolina: It depends on the study, but the failure rates are incredibly low with Traumagel, assuming that it’s correctly used. That’s one of the benefits to this product, where with proper technique, with overwrap with gauze, you nearly always get control of hemorrhage with a product like this. 

Glatter: Is manual pressure required in that sense? From what you described earlier, manual pressure would not be required. 

Landolina: It depends on the injury. What we recommend is that, if you have a very deep wound where you cannot visualize the source of bleed, you use pressure to seat Traumagel into the source of bleeding, meaning that you’re following Committee on Tactical Combat Casualty Care (Co-TCCC) regulations or requirements, where you’re over wrapping with gauze, and you’re providing a pressure wrapping to ensure that the Traumagel is in contact with the bleed while it’s doing what it’s doing. 

In most cases, it doesn’t hurt to apply pressure on top of Traumagel as well. In more surface level bleeds, you don’t need pressure at all. 

 

Applications Beyond Trauma

Glatter: Interesting. In terms of further applications (eg, nose bleeds or GYN bleeding, which are life-threatening), do you see this coming as an application for the future? 

Landolina: That’s where we’re working. Traumagel is the successor to an animal health product called Vetigel. The formulations of the gel behind Vetigel and Traumagel are identical. Vetigel has a full surgical indication, and that’s everything from epistaxis to neuro and spine procedures, into cardiovascular and soft tissue surgeries, orthopedic medicine, and so on.

Cresilon’s goal is to eventually expand the indication of our technology to include surgical indications and other indications where we can help any patient that’s bleeding. 

Glatter: That’s important, because we use prehospital whole blood, low titer, specifically, when patients have life-threatening hemorrhage. With your product, that would reduce the amount of blood products that would need to be administered. This could be a real game changer. 

Landolina: Definitely, that’s the goal we’re working on. 

Infection Risks and Biocompatibility

Glatter: In terms of any risk for infection, has that been studied as well? Does Traumagel in any way lead to increased rates of infection?

Landolina: Traumagel is biocompatible. It’s a sterile product. We’ve done the full suite of biocompatibility testing as required by FDA. On top of that, remember that Vetigel, which is the same formulation, is an implantable product. As a result, that has even extended biocompatibility testing beyond what would be necessary for an external product.

In Vetigel’s use case, which has been used now in over 60,000 patients, primarily companion animals, dogs and cats, we haven’t seen instances of infection. There’s no reason to believe that we would see that clinically with Traumagel.

 

Research Collaborations and Future Applications

Glatter: In terms of other research that your company’s embarked on preclinically, I understand there were some studies done at Walter Reed Army Institute of Research. I was wondering if you could expand on these, specifically, in terms of traumatic brain injury (TBI) and hemorrhage related to that. For example, with shrapnel or even a gunshot wound. 

Landolina: The Walter Reed collaboration with Cresilon is something that I’m particularly excited about, because it marks Cresilon’s first project that’s outside the scope of just hemostasis. Walter Reed came to us with this proposal where there’s a big challenge in a subset of TBI called penetrating ballistic-like brain injury, where the brain has been penetrated by a bullet, shrapnel, or some other projectile, and there’s an injury that exposes the brain to the outside. 

Today, there is no standard of care to treat patients with those types of injuries. In many cases, mortality is caused through swelling of the brain, or collapse of the brain. What they came to us with was the potential of using our technology, not primarily as a hemostatic agent, but to be able to stabilize that patient enough to get to the next level of care to be treated by a neurosurgeon.

That study Walter Reed did was just a pilot that was done in small animals. In that pilot, they showed that over the period of treatment, there was no negative change in vital signs, no increase in edema or in swelling, or in any of the biomarkers that were being monitored at that time. 

At the very least, this is not full indication that this indication will work for Cresilon, but it shows that there’s promise. It’s something that we’re working on and hopefully we’ll be able to bring to market soon.

Glatter: Certainly, maintaining intracranial pressure and cerebral perfusion pressures are very critical. In the future, do you think this product would be able to be deployed endovascularly? Imagine this in terms of stopping bleeding from some source, whether it’s from a stroke or another intracranial source. 

Landolina: That’s been an area of interest for us. We have no evidence to prove that indication works at this point, but there’s also nothing to say that it wouldn’t be possible for our technology. At this point, we’ve only looked at a cursory level at those indications. 

Glatter: Does the use of Traumagel obviate the need for a more definitive repair (eg, with sutures) or something that’s more permanent?

Landolina: I always say that Traumagel — and Vetigel, for that matter — is not a replacement for good surgical technique. The surgeon always needs to make his or her best judgment when reviewing the patient. That doesn’t mean that there won’t need to be sutures or vascular repair in most of these cases, especially in major trauma.

Final Takeaways

Glatter: Do you have some bullet points or pearls you could give our audience as a takeaway? 

Landolina: When Cresilon looks at Traumagel — and for us, Traumagel is the next generation of hemostatic agent, especially in trauma care and in emergency medicine — it allows for a far-simplified application of the product and much faster control of hemorrhage with better patient outcomes.

As we roll this out through EMS agencies, trauma hospitals, military agencies, and eventually to the general public through a future indication, it’s something we’re very excited about. Personally, I started this business 14 years ago, and so it’s great to see our mission of saving lives transitioning to saving human lives.

Glatter: I look forward to seeing this product in the emergency department, but also in other settings, such as in the operating room where we can really help patients who are dying from hemorrhage, certainly on the battlefield, and the lay public. If someone were to come upon a patient who’s bleeding out, this could be certainly a game changer and a lifesaver. 

I want to thank you for your time. This is a really important product that’s transformed the lives of so many animals, but also people in the future.

Dr. Glatter is an assistant professor of emergency medicine at Zucker School of Medicine at Hofstra/Northwell in Hempstead, New York. He reported no relevant conflicts of interest. Mr. Landolina is the CEO and co-founder of Cresilon, a biotechnology company specializing in plant-based solutions for emergency bleeding control.

A version of this article first appeared on Medscape.com.

This video transcript has been edited for clarity. 

Robert D. Glatter, MD: Hi and welcome. I’m Dr. Robert Glatter, medical adviser for Medscape Emergency Medicine. Joining me today to discuss a novel, plant-based approach to stopping moderate to severe bleeding is Joe Landolina, CEO and cofounder of Cresilon. Welcome, Joe. 

Joe Landolina, MS: Thank you so much for taking the time. It’s great to be here.

Educational Background and Inception of Cresilon

Glatter: It’s a pleasure to have you join me, and I want to congratulate you on your recent 510(k) FDA clearance for your novel product to save lives and stop bleeding. To begin with, can you explain how the idea for launching your company came about? 

Landolina: The way that Cresilon came about was a little bit unorthodox, because I was 17 years old when I invented the technology behind the product that eventually became Traumagel®. 

My grandfather was an ex-pharmaceutical executive, who later in life started a vineyard. I grew up on a vineyard with a winery chemistry lab across the street from my house and a grandfather who learned lab safety in the 60s. So, that meant that the day I learned how to walk, I was tossed into a lab and I fell head over heels in love with lab research.

That started experimentation and my academic pursuits. That led to discovering a blend of two plant-based polymers derived from algae that stop bleeding on contact, effectively creating a mechanical barrier and allowing anything from a gunshot wound to anything quite a bit more minor to stop in a matter of seconds.

Glatter: Your background is in biomedical engineering. How is it that you started tinkering and doing all this type of work? 

Landolina: That’s correct. I did my undergrad in chemical engineering, and my graduate studies were in biomedical engineering. For me, that was supposed to be a pathway into medical school. I always wanted to be a surgeon myself, and I love the field of medicine. 

As a freshman in college at NYU Engineering, I had this idea. I entered it into NYU’s business plan competition, and we won at the engineering school. That gave us just enough capital to start developing and researching Traumagel more, and Cresilon was born out of that research.

 

Techniques for Stopping Hemorrhage

Glatter: In terms of stopping hemorrhage, which takes so many lives in the United States and globally — certainly, uncontrolled hemorrhage — what are the techniques that you see, prior to the arrival of your product, as being effective? Can you elucidate some of these techniques? 

Landolina: In emergency medicine, the primary mode of controlling hemorrhage is passive. It’s what, in Brooklyn, we like to call “pressure and a prayer”, where you have a material that’s either gauze or an impregnated gauze in most cases, where the mode of action is absorbing blood, with the adjunct of pressure by the first responder or by the clinician who’s providing aid.

The idea is to stop the flow of blood to concentrate blood factors at the surface of the gauze product, and to promote either platelet activation or the production of fibrin to create a clot. 

These types of technologies are widespread. There are many versions of this technology carried by EMS agencies, trauma bays, US military soldiers, and soldiers across NATO countries. But these types of technologies tend to be relatively inefficient, meaning that they’re very difficult to get into wounds because of the gauze or the powder form of the devices, and it’s very hard to get them in contact with the form of bleeding.

On top of that, if the patient is clotting compromised or immunocompromised in some way, the ability to create a durable clot that will not be ripped off when you remove the product at the next level of care is also of concern. And so, this type of technology or the type of treatment of massive hemorrhage hasn’t changed in decades.

 

Current Applications and Potential Use

Glatter: I envision this product will be carried by paramedics, used on the battlefield at some point after your FDA clearance, and recently it went through.

Do you see any possibility that this could be an AED equivalent to Stop the Bleed? In other words, could the average lay person be trained to use your product if kits are available? 

Landolina: To be very clear, Traumagel today is only approved or cleared under a “prescription-only” indication, which means that it will not initially be available OTC. However, that is our goal. Our goal is to make this product available and usable by someone with no medical training whatsoever. 

The form factor of being a gel in a syringe lends itself well to that, meaning that we try to make it as easy as point and shoot to control hemorrhage, where there’s not as much technique to be learned in the application of a product like Traumagel as there is in current hemorrhage control techniques. 

 

Mechanism of Action and Physiology

Glatter: Once you apply Traumagel, can you explain what happens to the product after it’s applied and the bleeding has stopped? Does it get reabsorbed by the body? What’s the process here? 

Landolina: Under Traumagel’s indication, because it’s used in traumatic injury, it must be removed within 24 hours.

One of the big benefits of Traumagel is that when the patient produces a blood clot underneath Traumagel, it doesn’t become incorporated within the gel itself. To contrast that with the use of gauze, gauze is porous. The clot ends up wrapped around the fibers of the gauze, so if you peel the gauze away, it’s very likely that clot is coming off with it. The surgeon or the clinician at the next level of care is going to have to deal with the re-bleed. 

You can remove Traumagel cleanly and entirely without disturbing the underlying clot. That’s a major benefit, not only to the patient but also to the next level of care, to the next clinician or physician that is required to remove the product.

Glatter: How is it possible to remove the substance without disturbing the clot? Can you explain in more detail? 

Landolina: That’s one of the hallmarks of these plant-based polymers and the way that we design Traumagel itself. Traumagel is completely nonporous, and it has no fibrous nature to it. What that means is when the patient produces a blood clot or fibrin next to or on top of Traumagel, that fibrin ends up not incorporated within the polymers of Traumagel itself. 

Over time, because Traumagel is a hydrogel, meaning that by weight it’s mostly water, you end up having less adhesion to the clot over time. When it’s time to remove Traumagel from the injury, it has lost almost all of its adhesive capabilities, meaning that when you peel it away, that clot is going to stick better to tissue than it will to the gel itself. 

Glatter: Can you explain a little bit about the matrix that’s formed, the physiology, and how the polymers work to form this matrix? 

Landolina: Sure. Traumagel is made of two polysaccharides that are plant derived. One polysaccharide is polyanionic, and the other is polycationic, meaning one has negative charges and the other has positive charges, which together create almost a Lego block effect, where when the material comes in contact with tissue, it adheres strongly and allows for itself to effectively create a mechanical barrier against bleeding.

Courtesy of Cresilon

Landolina: Even in the face of major arterial blood flow, Traumagel will stay where it needs to stay, and it’s not going to get washed away. This means that it is much more easily appliable to these types of surfaces and will allow the patient to produce their own endogenous fibrin clot at that location.

Like I mentioned before, when that fibrin clot is formed, because the gel itself has no pores or fibers, it doesn’t become incorporated within the fibrin clot. You can take the gel away, leaving that clot behind without the chance of a rebleed.

 

Testing With Major Bleeds

Glatter: In terms of bleeding itself, have you tested your product with major aortic bleeds or carotid bleeds in preclinical work?

Landolina: We have used the US military’s model for lethal hemorrhage, and the idea there is to create a model that is just that — lethal. These are the worst types of bleeds that you can possibly imagine, where the patients are clotting compromised, and where you have, in most cases, a very strong arterial component, so something like a femoral artery bleed.

We’ve also tested in carotid artery, aortic applications, as well as combinations of venous and arterial bleeds. The idea here is to show the use of the product in the absolute worst-case scenario so that when this translates into the clinic, the models that we’ve used for evaluation, hopefully, are worse than what actually rolls into the trauma bay.

Glatter: Excellent. What’s the mean time to stop an arterial vs a venous bleed? Are we talking a matter of seconds?

Landolina: In the case of a healthy patient, meaning a patient without clotting compromise, you’re in a matter of seconds. It’s less than 10 seconds. 

In the case where you have clotting compromise, a deep, complicated wound geometry, we recommend holding a pressure bandage on for 3 minutes just because it increases the chance of Traumagel coming into contact with the bleed, especially when you can’t visualize the bleed in the bleed source. Because of that pressure time, that becomes the mean. But again, it’s highly dependent on the type of bleed and the style of application.

 

Failure Rates and Effectiveness

Glatter: As a segue to that, what is the failure rate based on your studies and internal research using Traumagel? Have there been cases where bleeding has not been able to be stopped? 

Landolina: It depends on the study, but the failure rates are incredibly low with Traumagel, assuming that it’s correctly used. That’s one of the benefits to this product, where with proper technique, with overwrap with gauze, you nearly always get control of hemorrhage with a product like this. 

Glatter: Is manual pressure required in that sense? From what you described earlier, manual pressure would not be required. 

Landolina: It depends on the injury. What we recommend is that, if you have a very deep wound where you cannot visualize the source of bleed, you use pressure to seat Traumagel into the source of bleeding, meaning that you’re following Committee on Tactical Combat Casualty Care (Co-TCCC) regulations or requirements, where you’re over wrapping with gauze, and you’re providing a pressure wrapping to ensure that the Traumagel is in contact with the bleed while it’s doing what it’s doing. 

In most cases, it doesn’t hurt to apply pressure on top of Traumagel as well. In more surface level bleeds, you don’t need pressure at all. 

 

Applications Beyond Trauma

Glatter: Interesting. In terms of further applications (eg, nose bleeds or GYN bleeding, which are life-threatening), do you see this coming as an application for the future? 

Landolina: That’s where we’re working. Traumagel is the successor to an animal health product called Vetigel. The formulations of the gel behind Vetigel and Traumagel are identical. Vetigel has a full surgical indication, and that’s everything from epistaxis to neuro and spine procedures, into cardiovascular and soft tissue surgeries, orthopedic medicine, and so on.

Cresilon’s goal is to eventually expand the indication of our technology to include surgical indications and other indications where we can help any patient that’s bleeding. 

Glatter: That’s important, because we use prehospital whole blood, low titer, specifically, when patients have life-threatening hemorrhage. With your product, that would reduce the amount of blood products that would need to be administered. This could be a real game changer. 

Landolina: Definitely, that’s the goal we’re working on. 

Infection Risks and Biocompatibility

Glatter: In terms of any risk for infection, has that been studied as well? Does Traumagel in any way lead to increased rates of infection?

Landolina: Traumagel is biocompatible. It’s a sterile product. We’ve done the full suite of biocompatibility testing as required by FDA. On top of that, remember that Vetigel, which is the same formulation, is an implantable product. As a result, that has even extended biocompatibility testing beyond what would be necessary for an external product.

In Vetigel’s use case, which has been used now in over 60,000 patients, primarily companion animals, dogs and cats, we haven’t seen instances of infection. There’s no reason to believe that we would see that clinically with Traumagel.

 

Research Collaborations and Future Applications

Glatter: In terms of other research that your company’s embarked on preclinically, I understand there were some studies done at Walter Reed Army Institute of Research. I was wondering if you could expand on these, specifically, in terms of traumatic brain injury (TBI) and hemorrhage related to that. For example, with shrapnel or even a gunshot wound. 

Landolina: The Walter Reed collaboration with Cresilon is something that I’m particularly excited about, because it marks Cresilon’s first project that’s outside the scope of just hemostasis. Walter Reed came to us with this proposal where there’s a big challenge in a subset of TBI called penetrating ballistic-like brain injury, where the brain has been penetrated by a bullet, shrapnel, or some other projectile, and there’s an injury that exposes the brain to the outside. 

Today, there is no standard of care to treat patients with those types of injuries. In many cases, mortality is caused through swelling of the brain, or collapse of the brain. What they came to us with was the potential of using our technology, not primarily as a hemostatic agent, but to be able to stabilize that patient enough to get to the next level of care to be treated by a neurosurgeon.

That study Walter Reed did was just a pilot that was done in small animals. In that pilot, they showed that over the period of treatment, there was no negative change in vital signs, no increase in edema or in swelling, or in any of the biomarkers that were being monitored at that time. 

At the very least, this is not full indication that this indication will work for Cresilon, but it shows that there’s promise. It’s something that we’re working on and hopefully we’ll be able to bring to market soon.

Glatter: Certainly, maintaining intracranial pressure and cerebral perfusion pressures are very critical. In the future, do you think this product would be able to be deployed endovascularly? Imagine this in terms of stopping bleeding from some source, whether it’s from a stroke or another intracranial source. 

Landolina: That’s been an area of interest for us. We have no evidence to prove that indication works at this point, but there’s also nothing to say that it wouldn’t be possible for our technology. At this point, we’ve only looked at a cursory level at those indications. 

Glatter: Does the use of Traumagel obviate the need for a more definitive repair (eg, with sutures) or something that’s more permanent?

Landolina: I always say that Traumagel — and Vetigel, for that matter — is not a replacement for good surgical technique. The surgeon always needs to make his or her best judgment when reviewing the patient. That doesn’t mean that there won’t need to be sutures or vascular repair in most of these cases, especially in major trauma.

Final Takeaways

Glatter: Do you have some bullet points or pearls you could give our audience as a takeaway? 

Landolina: When Cresilon looks at Traumagel — and for us, Traumagel is the next generation of hemostatic agent, especially in trauma care and in emergency medicine — it allows for a far-simplified application of the product and much faster control of hemorrhage with better patient outcomes.

As we roll this out through EMS agencies, trauma hospitals, military agencies, and eventually to the general public through a future indication, it’s something we’re very excited about. Personally, I started this business 14 years ago, and so it’s great to see our mission of saving lives transitioning to saving human lives.

Glatter: I look forward to seeing this product in the emergency department, but also in other settings, such as in the operating room where we can really help patients who are dying from hemorrhage, certainly on the battlefield, and the lay public. If someone were to come upon a patient who’s bleeding out, this could be certainly a game changer and a lifesaver. 

I want to thank you for your time. This is a really important product that’s transformed the lives of so many animals, but also people in the future.

Dr. Glatter is an assistant professor of emergency medicine at Zucker School of Medicine at Hofstra/Northwell in Hempstead, New York. He reported no relevant conflicts of interest. Mr. Landolina is the CEO and co-founder of Cresilon, a biotechnology company specializing in plant-based solutions for emergency bleeding control.

A version of this article first appeared on Medscape.com.

Long COVID is a symptom-driven disease, meaning that with no cure, physicians primarily treat the symptoms their patients are experiencing. Effective treatments for long COVID remain elusive because what works for one patient may be entirely ineffective for another. But as 2024 winds down, researchers have begun to pinpoint a number of treatments that are bringing relief to the 17 million Americans diagnosed with long COVID.

Here’s a current look at what research has identified as some of the most promising treatments.

 

Low-Dose Naltrexone

Some research suggests that low-dose naltrexone may be helpful for patients suffering from brain fog, pain, sleep issues, and fatigue, said Ziyad Al-Aly, MD, a global expert on long COVID and chief of research and development at the Veterans Affairs St Louis Health Care System in Missouri.

Low-dose naltrexone is an anti-inflammatory agent currently approved by the Food and Drug Administration for the treatment of alcohol and opioid dependence.

“We don’t know the mechanism for how the medication works, and for that matter, we don’t really understand what causes brain fog. But perhaps its anti-inflammatory properties seem to help, and for some patients, low-dose naltrexone has been helpful,” said Al-Aly.

A March 2024 study found that both fatigue and pain were improved in patients taking low-dose naltrexone. In another study, published in the June 2024 issue of Frontiers in Medicine, researchers found that low-dose naltrexone was associated with improvement of several clinical symptoms related to long COVID such as fatigue, poor sleep quality, brain fog, post-exertional malaise, and headache.

 

Selective Serotonin Reuptake Inhibitors (SSRIs) and Antidepressants

In 2023, University of Pennsylvania researchers uncovered a link between long COVID and lower levels of serotonin in the body. This helped point to the potential treatment of using SSRIs to treat the condition.

For patients who have overlapping psychiatric issues that go along with brain fog, SSRIs prescribed to treat depression and other mental health conditions, as well as the antidepressant Wellbutrin, have been shown effective at dealing with concentration issues, brain fog, and depression, said Nisha Viswanathan, MD, director of the University of California, Los Angeles (UCLA) Long COVID Program at UCLA Health.

A study published in the November 2023 issue of the journal Scientific Reports found that SSRIs led to a “considerable reduction of symptoms,” especially brain fog, fatigue, sensory overload, and overall improved functioning. Low-dose Abilify, which contains aripiprazole, an antipsychotic medication, has also been found to be effective for cognitive issues caused by long COVID.

“Abilify is traditionally used for the treatment of schizophrenia or other psychotic disorders, but in a low-dose format, there is some data to suggest that it can also be anti-inflammatory and helpful for cognitive issues like brain fog,” said Viswanathan.

 

Modafinil

Modafinil, a medication previously used for managing narcolepsy, has also been shown effective for the treatment of fatigue and neurocognitive deficits caused by long COVID, said Viswanathan, adding that it’s another medication that she’s found useful for a number of her patients.

It’s thought that these cognitive symptoms are caused by an inflammatory cytokine release that leads to excessive stimulation of neurotransmitters in the body. According to a June 2024 article in the American Journal of Psychiatry, “Modafinil can therapeutically act on these pathways, which possibly contributed to the symptomatic improvement.” But the medication has not been studied widely in patients with long COVID and has been shown to have interactions with other medications.

 

Metformin

Some research has shown that metformin, a well-known diabetes medication, reduces instances of long COVID when taken during the illness’s acute phase. It seems to boost metabolic function in patients.

“It makes sense that it would work because it seems to have anti-inflammatory effects on the body,” said Grace McComsey, MD, who leads one of the 15 nationwide long COVID centers funded by the federal RECOVER (Researching COVID to Enhance Recovery) Initiative in Cleveland, Ohio. McComsey added that it may reduce the viral persistence that causes some forms of long COVID.

A study published in the October 2023 issue of the journal The Lancet Infectious Diseases found that metformin seemed to reduce instances of long COVID in patients who took it after being diagnosed with acute COVID. It seems less effective in patients who already have long COVID.

 

Antihistamines

Other data suggest that some patients with long COVID showed improvement after taking antihistamines. Research has shown that long COVID symptoms improved in 29% of patients with long COVID.

While researchers aren’t sure why antihistamines work to quell long COVID, the thought is that, when mast cells, a white blood cell that’s part of the immune system, shed granules and cause an inflammatory reaction, they release a lot of histamines. Antihistamine medications like famotidine block histamine receptors in the body, improving symptoms like brain fog, difficulty breathing, and elevated heart rate in patients.

“For some patients, these can be a lifesaver,” said David Putrino, the Nash Family Director of the Cohen Center for Recovery from Complex Chronic Illness and a national leader in the treatment of long COVID.

Putrino cautions patients toward taking these and other medications haphazardly without fully understanding that all treatments have risks, especially if they’re taking a number of them.

“Often patients are told that there’s no risk to trying something, but physicians should be counseling their patients and reminding them that there is a risk that includes medication sensitivities and medication interactions,” said Putrino.

The good news is that doctors have begun to identify some treatments that seem to be working in their patients, but we still don’t have the large-scale clinical trials to identify which treatments will work for certain patients and why.

There’s still so much we don’t know, and for physicians on the front lines of treating long COVID, it’s still largely a guessing game. “This is a constellation of symptoms; it’s not just one thing,” said Al-Aly. And while a treatment might be wildly effective for one patient, it might be ineffective or worse, problematic, for another.

A version of this article first appeared on Medscape.com.

Long COVID is a symptom-driven disease, meaning that with no cure, physicians primarily treat the symptoms their patients are experiencing. Effective treatments for long COVID remain elusive because what works for one patient may be entirely ineffective for another. But as 2024 winds down, researchers have begun to pinpoint a number of treatments that are bringing relief to the 17 million Americans diagnosed with long COVID.

Here’s a current look at what research has identified as some of the most promising treatments.

 

Low-Dose Naltrexone

Some research suggests that low-dose naltrexone may be helpful for patients suffering from brain fog, pain, sleep issues, and fatigue, said Ziyad Al-Aly, MD, a global expert on long COVID and chief of research and development at the Veterans Affairs St Louis Health Care System in Missouri.

Low-dose naltrexone is an anti-inflammatory agent currently approved by the Food and Drug Administration for the treatment of alcohol and opioid dependence.

“We don’t know the mechanism for how the medication works, and for that matter, we don’t really understand what causes brain fog. But perhaps its anti-inflammatory properties seem to help, and for some patients, low-dose naltrexone has been helpful,” said Al-Aly.

A March 2024 study found that both fatigue and pain were improved in patients taking low-dose naltrexone. In another study, published in the June 2024 issue of Frontiers in Medicine, researchers found that low-dose naltrexone was associated with improvement of several clinical symptoms related to long COVID such as fatigue, poor sleep quality, brain fog, post-exertional malaise, and headache.

 

Selective Serotonin Reuptake Inhibitors (SSRIs) and Antidepressants

In 2023, University of Pennsylvania researchers uncovered a link between long COVID and lower levels of serotonin in the body. This helped point to the potential treatment of using SSRIs to treat the condition.

For patients who have overlapping psychiatric issues that go along with brain fog, SSRIs prescribed to treat depression and other mental health conditions, as well as the antidepressant Wellbutrin, have been shown effective at dealing with concentration issues, brain fog, and depression, said Nisha Viswanathan, MD, director of the University of California, Los Angeles (UCLA) Long COVID Program at UCLA Health.

A study published in the November 2023 issue of the journal Scientific Reports found that SSRIs led to a “considerable reduction of symptoms,” especially brain fog, fatigue, sensory overload, and overall improved functioning. Low-dose Abilify, which contains aripiprazole, an antipsychotic medication, has also been found to be effective for cognitive issues caused by long COVID.

“Abilify is traditionally used for the treatment of schizophrenia or other psychotic disorders, but in a low-dose format, there is some data to suggest that it can also be anti-inflammatory and helpful for cognitive issues like brain fog,” said Viswanathan.

 

Modafinil

Modafinil, a medication previously used for managing narcolepsy, has also been shown effective for the treatment of fatigue and neurocognitive deficits caused by long COVID, said Viswanathan, adding that it’s another medication that she’s found useful for a number of her patients.

It’s thought that these cognitive symptoms are caused by an inflammatory cytokine release that leads to excessive stimulation of neurotransmitters in the body. According to a June 2024 article in the American Journal of Psychiatry, “Modafinil can therapeutically act on these pathways, which possibly contributed to the symptomatic improvement.” But the medication has not been studied widely in patients with long COVID and has been shown to have interactions with other medications.

 

Metformin

Some research has shown that metformin, a well-known diabetes medication, reduces instances of long COVID when taken during the illness’s acute phase. It seems to boost metabolic function in patients.

“It makes sense that it would work because it seems to have anti-inflammatory effects on the body,” said Grace McComsey, MD, who leads one of the 15 nationwide long COVID centers funded by the federal RECOVER (Researching COVID to Enhance Recovery) Initiative in Cleveland, Ohio. McComsey added that it may reduce the viral persistence that causes some forms of long COVID.

A study published in the October 2023 issue of the journal The Lancet Infectious Diseases found that metformin seemed to reduce instances of long COVID in patients who took it after being diagnosed with acute COVID. It seems less effective in patients who already have long COVID.

 

Antihistamines

Other data suggest that some patients with long COVID showed improvement after taking antihistamines. Research has shown that long COVID symptoms improved in 29% of patients with long COVID.

While researchers aren’t sure why antihistamines work to quell long COVID, the thought is that, when mast cells, a white blood cell that’s part of the immune system, shed granules and cause an inflammatory reaction, they release a lot of histamines. Antihistamine medications like famotidine block histamine receptors in the body, improving symptoms like brain fog, difficulty breathing, and elevated heart rate in patients.

“For some patients, these can be a lifesaver,” said David Putrino, the Nash Family Director of the Cohen Center for Recovery from Complex Chronic Illness and a national leader in the treatment of long COVID.

Putrino cautions patients toward taking these and other medications haphazardly without fully understanding that all treatments have risks, especially if they’re taking a number of them.

“Often patients are told that there’s no risk to trying something, but physicians should be counseling their patients and reminding them that there is a risk that includes medication sensitivities and medication interactions,” said Putrino.

The good news is that doctors have begun to identify some treatments that seem to be working in their patients, but we still don’t have the large-scale clinical trials to identify which treatments will work for certain patients and why.

There’s still so much we don’t know, and for physicians on the front lines of treating long COVID, it’s still largely a guessing game. “This is a constellation of symptoms; it’s not just one thing,” said Al-Aly. And while a treatment might be wildly effective for one patient, it might be ineffective or worse, problematic, for another.

A version of this article first appeared on Medscape.com.

Long COVID is a symptom-driven disease, meaning that with no cure, physicians primarily treat the symptoms their patients are experiencing. Effective treatments for long COVID remain elusive because what works for one patient may be entirely ineffective for another. But as 2024 winds down, researchers have begun to pinpoint a number of treatments that are bringing relief to the 17 million Americans diagnosed with long COVID.

Here’s a current look at what research has identified as some of the most promising treatments.

 

Low-Dose Naltrexone

Some research suggests that low-dose naltrexone may be helpful for patients suffering from brain fog, pain, sleep issues, and fatigue, said Ziyad Al-Aly, MD, a global expert on long COVID and chief of research and development at the Veterans Affairs St Louis Health Care System in Missouri.

Low-dose naltrexone is an anti-inflammatory agent currently approved by the Food and Drug Administration for the treatment of alcohol and opioid dependence.

“We don’t know the mechanism for how the medication works, and for that matter, we don’t really understand what causes brain fog. But perhaps its anti-inflammatory properties seem to help, and for some patients, low-dose naltrexone has been helpful,” said Al-Aly.

A March 2024 study found that both fatigue and pain were improved in patients taking low-dose naltrexone. In another study, published in the June 2024 issue of Frontiers in Medicine, researchers found that low-dose naltrexone was associated with improvement of several clinical symptoms related to long COVID such as fatigue, poor sleep quality, brain fog, post-exertional malaise, and headache.

 

Selective Serotonin Reuptake Inhibitors (SSRIs) and Antidepressants

In 2023, University of Pennsylvania researchers uncovered a link between long COVID and lower levels of serotonin in the body. This helped point to the potential treatment of using SSRIs to treat the condition.

For patients who have overlapping psychiatric issues that go along with brain fog, SSRIs prescribed to treat depression and other mental health conditions, as well as the antidepressant Wellbutrin, have been shown effective at dealing with concentration issues, brain fog, and depression, said Nisha Viswanathan, MD, director of the University of California, Los Angeles (UCLA) Long COVID Program at UCLA Health.

A study published in the November 2023 issue of the journal Scientific Reports found that SSRIs led to a “considerable reduction of symptoms,” especially brain fog, fatigue, sensory overload, and overall improved functioning. Low-dose Abilify, which contains aripiprazole, an antipsychotic medication, has also been found to be effective for cognitive issues caused by long COVID.

“Abilify is traditionally used for the treatment of schizophrenia or other psychotic disorders, but in a low-dose format, there is some data to suggest that it can also be anti-inflammatory and helpful for cognitive issues like brain fog,” said Viswanathan.

 

Modafinil

Modafinil, a medication previously used for managing narcolepsy, has also been shown effective for the treatment of fatigue and neurocognitive deficits caused by long COVID, said Viswanathan, adding that it’s another medication that she’s found useful for a number of her patients.

It’s thought that these cognitive symptoms are caused by an inflammatory cytokine release that leads to excessive stimulation of neurotransmitters in the body. According to a June 2024 article in the American Journal of Psychiatry, “Modafinil can therapeutically act on these pathways, which possibly contributed to the symptomatic improvement.” But the medication has not been studied widely in patients with long COVID and has been shown to have interactions with other medications.

 

Metformin

Some research has shown that metformin, a well-known diabetes medication, reduces instances of long COVID when taken during the illness’s acute phase. It seems to boost metabolic function in patients.

“It makes sense that it would work because it seems to have anti-inflammatory effects on the body,” said Grace McComsey, MD, who leads one of the 15 nationwide long COVID centers funded by the federal RECOVER (Researching COVID to Enhance Recovery) Initiative in Cleveland, Ohio. McComsey added that it may reduce the viral persistence that causes some forms of long COVID.

A study published in the October 2023 issue of the journal The Lancet Infectious Diseases found that metformin seemed to reduce instances of long COVID in patients who took it after being diagnosed with acute COVID. It seems less effective in patients who already have long COVID.

 

Antihistamines

Other data suggest that some patients with long COVID showed improvement after taking antihistamines. Research has shown that long COVID symptoms improved in 29% of patients with long COVID.

While researchers aren’t sure why antihistamines work to quell long COVID, the thought is that, when mast cells, a white blood cell that’s part of the immune system, shed granules and cause an inflammatory reaction, they release a lot of histamines. Antihistamine medications like famotidine block histamine receptors in the body, improving symptoms like brain fog, difficulty breathing, and elevated heart rate in patients.

“For some patients, these can be a lifesaver,” said David Putrino, the Nash Family Director of the Cohen Center for Recovery from Complex Chronic Illness and a national leader in the treatment of long COVID.

Putrino cautions patients toward taking these and other medications haphazardly without fully understanding that all treatments have risks, especially if they’re taking a number of them.

“Often patients are told that there’s no risk to trying something, but physicians should be counseling their patients and reminding them that there is a risk that includes medication sensitivities and medication interactions,” said Putrino.

The good news is that doctors have begun to identify some treatments that seem to be working in their patients, but we still don’t have the large-scale clinical trials to identify which treatments will work for certain patients and why.

There’s still so much we don’t know, and for physicians on the front lines of treating long COVID, it’s still largely a guessing game. “This is a constellation of symptoms; it’s not just one thing,” said Al-Aly. And while a treatment might be wildly effective for one patient, it might be ineffective or worse, problematic, for another.

A version of this article first appeared on Medscape.com.

When a patient signs on to a telehealth portal, there’s little more a provider can do than ask questions. But a new artificial intelligence (AI) technology could allow providers to get feedback about the patient’s blood pressure and diabetes risk just from a video call or a smartphone app.

Researchers at the University of Tokyo in Japan are using AI to determine whether people might have high blood pressure or diabetes based on video data collected with a special sensor. 

The technology relies on photoplethysmography (PPG), which measures changes in blood volume by detecting the amount of light absorbed by blood just below the skin. 

This technology is already used for things like finger pulse oximetry to determine oxygen saturation and heart rate. Wearable devices like Apple Watches and Fitbits also use PPG technologies to detect heart rate and atrial fibrillation.

“If we could detect and accurately measure your blood pressure, heart rate, and oxygen saturation non-invasively that would be fantastic,” said Eugene Yang, MD, professor of medicine in the division of cardiology at the University of Washington School of Medicine in Seattle who was not involved in the study.

 

How Does PPG Work — and Is This New Tech Accurate?

Using PPG, “you’re detecting these small, little blood vessels that sit underneath the surface of your skin,” explained Yang.

“Since both hypertension and diabetes are diseases that damage blood vessels, we thought these diseases might affect blood flow and pulse wave transit times,” said Ryoko Uchida, a project researcher in the cardiology department at the University of Tokyo and one of the leaders of the study.

PPG devices primarily use green light to detect blood flow, as hemoglobin, the oxygen-carrying molecule in blood, absorbs green light most effectively, Yang said. “So, if you extract and remove all the other channels of light and only focus on the green channel, then that’s when you’ll be able to potentially see blood flow and pulsatile blood flow activity,” he noted.

The University of Tokyo researchers used remote or contactless PPG, which requires a short video recording of someone’s face and palms, as the person holds as still as possible. A special sensor collects the video and detects only certain wavelengths of light. Then the researchers developed an AI algorithm to extract data from participants’ skin, such as changes in pulse transit time — the time it takes for the pulse to travel from the palm to the face.

To correlate the video algorithm to blood pressure and diabetes risk, the researchers measured blood participants’ pressure with a continuous sphygmomanometer (an automatic blood pressure cuff) at the same time as they collected the video. They also did a blood A1c test to detect diabetes.

So far, they’ve tested their video algorithm on 215 people. The algorithm applied to a 30-second video was 86% accurate in detecting if blood pressure was above normal, and a 5-second video was 81% accurate in detecting higher blood pressure.

Compared with using hemoglobin A1c blood test results to screen for diabetes, the video algorithm was 75% accurate in identifying people who had subtle blood changes that correlated to diabetes.

“Most of this focus has been on wearable devices, patches, rings, wrist devices,” Yang said, “the facial video stuff is great because you can imagine that there are other ways of applying it.”

Yang, who is also doing research on facial video processing, pointed out it could be helpful not only in telehealth visits, but also for patients in the hospital with highly contagious diseases who need to be in isolation, or just for people using their smartphones. 

“People are tied to their smartphones, so you could imagine that that would be great as a way for people to have awareness about their blood pressure or their diabetes status,” Yang noted.

 

More Work to Do

The study has a few caveats. The special sensor they used in this study isn’t yet integrated into smartphone cameras or other common video recording devices. But Uchida is hopeful that it could be mass-produced and inexpensive to someday add.

Also, the study was done in a Japanese population, and lighter skin may be easier to capture changes in blood flow, Uchida noted. Pulse oximeters, which use the same technology, tend to overestimate blood oxygen in people with darker skin tones.

“It is necessary to test whether the same results are obtained in a variety of subjects other than Japanese and Asians,” Uchida said, in addition to validating the tool with more participants.

The study has also not yet undergone peer review.

And Yang pointed out that this new AI technology provides more of a screening tool to predict who is at high risk for high blood pressure or diabetes, rather than precise measurements for either disease.

There are already some devices that claim to measure blood pressure using PPG technology, like blood pressure monitoring watches. But Yang warns that these kinds of devices aren’t validated, meaning we don’t really know how well they work.

One difficulty in getting any kind of PPG blood pressure monitoring device to market is that the organizations involved in setting medical device standards (like the International Organization for Standards) doesn’t yet have a validation standard for this technology, Yang said, so there’s really no way to consistently verify the technology’s accuracy.

“I am optimistic that we are capable of figuring out how to validate these things. I just think we have so many things we have to iron out before that happens,” Yang explained, noting that it will be at least 3 years before a remote blood monitoring system is widely available.

A version of this article first appeared on Medscape.com.

When a patient signs on to a telehealth portal, there’s little more a provider can do than ask questions. But a new artificial intelligence (AI) technology could allow providers to get feedback about the patient’s blood pressure and diabetes risk just from a video call or a smartphone app.

Researchers at the University of Tokyo in Japan are using AI to determine whether people might have high blood pressure or diabetes based on video data collected with a special sensor. 

The technology relies on photoplethysmography (PPG), which measures changes in blood volume by detecting the amount of light absorbed by blood just below the skin. 

This technology is already used for things like finger pulse oximetry to determine oxygen saturation and heart rate. Wearable devices like Apple Watches and Fitbits also use PPG technologies to detect heart rate and atrial fibrillation.

“If we could detect and accurately measure your blood pressure, heart rate, and oxygen saturation non-invasively that would be fantastic,” said Eugene Yang, MD, professor of medicine in the division of cardiology at the University of Washington School of Medicine in Seattle who was not involved in the study.

 

How Does PPG Work — and Is This New Tech Accurate?

Using PPG, “you’re detecting these small, little blood vessels that sit underneath the surface of your skin,” explained Yang.

“Since both hypertension and diabetes are diseases that damage blood vessels, we thought these diseases might affect blood flow and pulse wave transit times,” said Ryoko Uchida, a project researcher in the cardiology department at the University of Tokyo and one of the leaders of the study.

PPG devices primarily use green light to detect blood flow, as hemoglobin, the oxygen-carrying molecule in blood, absorbs green light most effectively, Yang said. “So, if you extract and remove all the other channels of light and only focus on the green channel, then that’s when you’ll be able to potentially see blood flow and pulsatile blood flow activity,” he noted.

The University of Tokyo researchers used remote or contactless PPG, which requires a short video recording of someone’s face and palms, as the person holds as still as possible. A special sensor collects the video and detects only certain wavelengths of light. Then the researchers developed an AI algorithm to extract data from participants’ skin, such as changes in pulse transit time — the time it takes for the pulse to travel from the palm to the face.

To correlate the video algorithm to blood pressure and diabetes risk, the researchers measured blood participants’ pressure with a continuous sphygmomanometer (an automatic blood pressure cuff) at the same time as they collected the video. They also did a blood A1c test to detect diabetes.

So far, they’ve tested their video algorithm on 215 people. The algorithm applied to a 30-second video was 86% accurate in detecting if blood pressure was above normal, and a 5-second video was 81% accurate in detecting higher blood pressure.

Compared with using hemoglobin A1c blood test results to screen for diabetes, the video algorithm was 75% accurate in identifying people who had subtle blood changes that correlated to diabetes.

“Most of this focus has been on wearable devices, patches, rings, wrist devices,” Yang said, “the facial video stuff is great because you can imagine that there are other ways of applying it.”

Yang, who is also doing research on facial video processing, pointed out it could be helpful not only in telehealth visits, but also for patients in the hospital with highly contagious diseases who need to be in isolation, or just for people using their smartphones. 

“People are tied to their smartphones, so you could imagine that that would be great as a way for people to have awareness about their blood pressure or their diabetes status,” Yang noted.

 

More Work to Do

The study has a few caveats. The special sensor they used in this study isn’t yet integrated into smartphone cameras or other common video recording devices. But Uchida is hopeful that it could be mass-produced and inexpensive to someday add.

Also, the study was done in a Japanese population, and lighter skin may be easier to capture changes in blood flow, Uchida noted. Pulse oximeters, which use the same technology, tend to overestimate blood oxygen in people with darker skin tones.

“It is necessary to test whether the same results are obtained in a variety of subjects other than Japanese and Asians,” Uchida said, in addition to validating the tool with more participants.

The study has also not yet undergone peer review.

And Yang pointed out that this new AI technology provides more of a screening tool to predict who is at high risk for high blood pressure or diabetes, rather than precise measurements for either disease.

There are already some devices that claim to measure blood pressure using PPG technology, like blood pressure monitoring watches. But Yang warns that these kinds of devices aren’t validated, meaning we don’t really know how well they work.

One difficulty in getting any kind of PPG blood pressure monitoring device to market is that the organizations involved in setting medical device standards (like the International Organization for Standards) doesn’t yet have a validation standard for this technology, Yang said, so there’s really no way to consistently verify the technology’s accuracy.

“I am optimistic that we are capable of figuring out how to validate these things. I just think we have so many things we have to iron out before that happens,” Yang explained, noting that it will be at least 3 years before a remote blood monitoring system is widely available.

A version of this article first appeared on Medscape.com.

When a patient signs on to a telehealth portal, there’s little more a provider can do than ask questions. But a new artificial intelligence (AI) technology could allow providers to get feedback about the patient’s blood pressure and diabetes risk just from a video call or a smartphone app.

Researchers at the University of Tokyo in Japan are using AI to determine whether people might have high blood pressure or diabetes based on video data collected with a special sensor. 

The technology relies on photoplethysmography (PPG), which measures changes in blood volume by detecting the amount of light absorbed by blood just below the skin. 

This technology is already used for things like finger pulse oximetry to determine oxygen saturation and heart rate. Wearable devices like Apple Watches and Fitbits also use PPG technologies to detect heart rate and atrial fibrillation.

“If we could detect and accurately measure your blood pressure, heart rate, and oxygen saturation non-invasively that would be fantastic,” said Eugene Yang, MD, professor of medicine in the division of cardiology at the University of Washington School of Medicine in Seattle who was not involved in the study.

 

How Does PPG Work — and Is This New Tech Accurate?

Using PPG, “you’re detecting these small, little blood vessels that sit underneath the surface of your skin,” explained Yang.

“Since both hypertension and diabetes are diseases that damage blood vessels, we thought these diseases might affect blood flow and pulse wave transit times,” said Ryoko Uchida, a project researcher in the cardiology department at the University of Tokyo and one of the leaders of the study.

PPG devices primarily use green light to detect blood flow, as hemoglobin, the oxygen-carrying molecule in blood, absorbs green light most effectively, Yang said. “So, if you extract and remove all the other channels of light and only focus on the green channel, then that’s when you’ll be able to potentially see blood flow and pulsatile blood flow activity,” he noted.

The University of Tokyo researchers used remote or contactless PPG, which requires a short video recording of someone’s face and palms, as the person holds as still as possible. A special sensor collects the video and detects only certain wavelengths of light. Then the researchers developed an AI algorithm to extract data from participants’ skin, such as changes in pulse transit time — the time it takes for the pulse to travel from the palm to the face.

To correlate the video algorithm to blood pressure and diabetes risk, the researchers measured blood participants’ pressure with a continuous sphygmomanometer (an automatic blood pressure cuff) at the same time as they collected the video. They also did a blood A1c test to detect diabetes.

So far, they’ve tested their video algorithm on 215 people. The algorithm applied to a 30-second video was 86% accurate in detecting if blood pressure was above normal, and a 5-second video was 81% accurate in detecting higher blood pressure.

Compared with using hemoglobin A1c blood test results to screen for diabetes, the video algorithm was 75% accurate in identifying people who had subtle blood changes that correlated to diabetes.

“Most of this focus has been on wearable devices, patches, rings, wrist devices,” Yang said, “the facial video stuff is great because you can imagine that there are other ways of applying it.”

Yang, who is also doing research on facial video processing, pointed out it could be helpful not only in telehealth visits, but also for patients in the hospital with highly contagious diseases who need to be in isolation, or just for people using their smartphones. 

“People are tied to their smartphones, so you could imagine that that would be great as a way for people to have awareness about their blood pressure or their diabetes status,” Yang noted.

 

More Work to Do

The study has a few caveats. The special sensor they used in this study isn’t yet integrated into smartphone cameras or other common video recording devices. But Uchida is hopeful that it could be mass-produced and inexpensive to someday add.

Also, the study was done in a Japanese population, and lighter skin may be easier to capture changes in blood flow, Uchida noted. Pulse oximeters, which use the same technology, tend to overestimate blood oxygen in people with darker skin tones.

“It is necessary to test whether the same results are obtained in a variety of subjects other than Japanese and Asians,” Uchida said, in addition to validating the tool with more participants.

The study has also not yet undergone peer review.

And Yang pointed out that this new AI technology provides more of a screening tool to predict who is at high risk for high blood pressure or diabetes, rather than precise measurements for either disease.

There are already some devices that claim to measure blood pressure using PPG technology, like blood pressure monitoring watches. But Yang warns that these kinds of devices aren’t validated, meaning we don’t really know how well they work.

One difficulty in getting any kind of PPG blood pressure monitoring device to market is that the organizations involved in setting medical device standards (like the International Organization for Standards) doesn’t yet have a validation standard for this technology, Yang said, so there’s really no way to consistently verify the technology’s accuracy.

“I am optimistic that we are capable of figuring out how to validate these things. I just think we have so many things we have to iron out before that happens,” Yang explained, noting that it will be at least 3 years before a remote blood monitoring system is widely available.

A version of this article first appeared on Medscape.com.

TOPLINE:

Use of the glucagon-like peptide 1 (GLP-1) receptor agonists semaglutide and liraglutide is linked to a lower risk for alcohol use disorder (AUD)–related hospitalizations, compared with traditional AUD medications, a new study suggested.

METHODOLOGY:

• Researchers conducted a nationwide cohort study from 2006 to 2023 in Sweden that included more than 220,000 individuals with AUD (mean age, 40 years; 64% men).
• Data were obtained from registers of inpatient and specialized outpatient care, sickness absence, and disability pension, with a median follow-up period of 8.8 years.
• The primary exposure measured was the use of individual GLP-1 receptor agonists — commonly used to treat type 2 diabetes and obesity — compared with nonuse.
• The secondary exposure examined was the use of medications indicated for AUD.
• The primary outcome was AUD-related hospitalization; secondary outcomes included hospitalization due to substance use disorder (SUD), somatic hospitalization, and suicide attempts.

TAKEAWAY:

• About 59% of participants experienced AUD-related hospitalization.
• Semaglutide users (n = 4321) had the lowest risk for hospitalization related to AUD (adjusted hazard ratio [aHR], 0.64; 95% CI, 0.50-0.83) and to any SUD (aHR, 0.68; 95% CI, 0.54-0.85).
• Liraglutide users (n = 2509) had the second lowest risk for both AUD-related (aHR, 0.72; 95% CI, 0.57-0.92) and SUD-related (aHR, 0.78; 95% CI, 0.64-0.97) hospitalizations.
• The use of both semaglutide (aHR, 0.78; 95% CI, 0.68-0.90) and liraglutide (aHR, 0.79; 95% CI, 0.69-0.91) was linked to a reduced risk for hospitalization because of somatic reasons but was not associated with the risk of suicide attempts.
• Traditional AUD medications showed modest effectiveness with a slightly decreased but nonsignificant risk for AUD-related hospitalization (aHR, 0.98).

IN PRACTICE:

“AUDs and SUDs are undertreated pharmacologically, despite the availability of effective treatments. However, novel treatments are also needed because existing treatments may not be suitable for all patients. Semaglutide and liraglutide may be effective in the treatment of AUD, and clinical trials are urgently needed to confirm these findings,” the investigators wrote.

SOURCE:

This study was led by Markku Lähteenvuo, MD, PhD, University of Eastern Finland, Niuvanniemi Hospital, Kuopio. It was published online on November 13 in JAMA Psychiatry.

LIMITATIONS:

The observational nature of this study limited causal inferences.

DISCLOSURES:

The data used in this study were obtained from the REWHARD consortium, supported by the Swedish Research Council. Four of the six authors reported receiving grants or personal fees from various sources outside the submitted work, which are fully listed in the original article.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Use of the glucagon-like peptide 1 (GLP-1) receptor agonists semaglutide and liraglutide is linked to a lower risk for alcohol use disorder (AUD)–related hospitalizations, compared with traditional AUD medications, a new study suggested.

METHODOLOGY:

• Researchers conducted a nationwide cohort study from 2006 to 2023 in Sweden that included more than 220,000 individuals with AUD (mean age, 40 years; 64% men).
• Data were obtained from registers of inpatient and specialized outpatient care, sickness absence, and disability pension, with a median follow-up period of 8.8 years.
• The primary exposure measured was the use of individual GLP-1 receptor agonists — commonly used to treat type 2 diabetes and obesity — compared with nonuse.
• The secondary exposure examined was the use of medications indicated for AUD.
• The primary outcome was AUD-related hospitalization; secondary outcomes included hospitalization due to substance use disorder (SUD), somatic hospitalization, and suicide attempts.

TAKEAWAY:

• About 59% of participants experienced AUD-related hospitalization.
• Semaglutide users (n = 4321) had the lowest risk for hospitalization related to AUD (adjusted hazard ratio [aHR], 0.64; 95% CI, 0.50-0.83) and to any SUD (aHR, 0.68; 95% CI, 0.54-0.85).
• Liraglutide users (n = 2509) had the second lowest risk for both AUD-related (aHR, 0.72; 95% CI, 0.57-0.92) and SUD-related (aHR, 0.78; 95% CI, 0.64-0.97) hospitalizations.
• The use of both semaglutide (aHR, 0.78; 95% CI, 0.68-0.90) and liraglutide (aHR, 0.79; 95% CI, 0.69-0.91) was linked to a reduced risk for hospitalization because of somatic reasons but was not associated with the risk of suicide attempts.
• Traditional AUD medications showed modest effectiveness with a slightly decreased but nonsignificant risk for AUD-related hospitalization (aHR, 0.98).

IN PRACTICE:

“AUDs and SUDs are undertreated pharmacologically, despite the availability of effective treatments. However, novel treatments are also needed because existing treatments may not be suitable for all patients. Semaglutide and liraglutide may be effective in the treatment of AUD, and clinical trials are urgently needed to confirm these findings,” the investigators wrote.

SOURCE:

This study was led by Markku Lähteenvuo, MD, PhD, University of Eastern Finland, Niuvanniemi Hospital, Kuopio. It was published online on November 13 in JAMA Psychiatry.

LIMITATIONS:

The observational nature of this study limited causal inferences.

DISCLOSURES:

The data used in this study were obtained from the REWHARD consortium, supported by the Swedish Research Council. Four of the six authors reported receiving grants or personal fees from various sources outside the submitted work, which are fully listed in the original article.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Use of the glucagon-like peptide 1 (GLP-1) receptor agonists semaglutide and liraglutide is linked to a lower risk for alcohol use disorder (AUD)–related hospitalizations, compared with traditional AUD medications, a new study suggested.

METHODOLOGY:

• Researchers conducted a nationwide cohort study from 2006 to 2023 in Sweden that included more than 220,000 individuals with AUD (mean age, 40 years; 64% men).
• Data were obtained from registers of inpatient and specialized outpatient care, sickness absence, and disability pension, with a median follow-up period of 8.8 years.
• The primary exposure measured was the use of individual GLP-1 receptor agonists — commonly used to treat type 2 diabetes and obesity — compared with nonuse.
• The secondary exposure examined was the use of medications indicated for AUD.
• The primary outcome was AUD-related hospitalization; secondary outcomes included hospitalization due to substance use disorder (SUD), somatic hospitalization, and suicide attempts.

TAKEAWAY:

• About 59% of participants experienced AUD-related hospitalization.
• Semaglutide users (n = 4321) had the lowest risk for hospitalization related to AUD (adjusted hazard ratio [aHR], 0.64; 95% CI, 0.50-0.83) and to any SUD (aHR, 0.68; 95% CI, 0.54-0.85).
• Liraglutide users (n = 2509) had the second lowest risk for both AUD-related (aHR, 0.72; 95% CI, 0.57-0.92) and SUD-related (aHR, 0.78; 95% CI, 0.64-0.97) hospitalizations.
• The use of both semaglutide (aHR, 0.78; 95% CI, 0.68-0.90) and liraglutide (aHR, 0.79; 95% CI, 0.69-0.91) was linked to a reduced risk for hospitalization because of somatic reasons but was not associated with the risk of suicide attempts.
• Traditional AUD medications showed modest effectiveness with a slightly decreased but nonsignificant risk for AUD-related hospitalization (aHR, 0.98).

IN PRACTICE:

“AUDs and SUDs are undertreated pharmacologically, despite the availability of effective treatments. However, novel treatments are also needed because existing treatments may not be suitable for all patients. Semaglutide and liraglutide may be effective in the treatment of AUD, and clinical trials are urgently needed to confirm these findings,” the investigators wrote.

SOURCE:

This study was led by Markku Lähteenvuo, MD, PhD, University of Eastern Finland, Niuvanniemi Hospital, Kuopio. It was published online on November 13 in JAMA Psychiatry.

LIMITATIONS:

The observational nature of this study limited causal inferences.

DISCLOSURES:

The data used in this study were obtained from the REWHARD consortium, supported by the Swedish Research Council. Four of the six authors reported receiving grants or personal fees from various sources outside the submitted work, which are fully listed in the original article.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE: 

Hypertension, atrial fibrillation, and smoking are more strongly linked to increased risk for severe stroke than nonsevere stroke, whereas a high waist-to-hip ratio is more closely associated with nonsevere stroke, a global study shows.

METHODOLOGY:

• The INTERSTROKE case-control study included nearly 27,000 participants, half of whom had a first acute stroke (ischemic or hemorrhagic) and the other half acting as age- and sex-matched controls.
• Participants (mean age, 62 years; 40% women) were recruited across 142 centers in 32 countries between 2007 and 2015. Baseline demographics and lifestyle risk factors for stroke were gathered using standardized questionnaires
• Modified Rankin Scale (mRS) scores measured within 72 hours of hospital admission were used to classify stroke severity (0-3, nonsevere stroke; 4-6, severe stroke).

TAKEAWAY:

• Among the participants with acute stroke, 64% had nonsevere stroke and 36% had severe stroke, based on the mRS.
• Hypertension, atrial fibrillation, and smoking showed a significantly stronger association with severe stroke than with nonsevere stroke (odds ratios [ORs], 3.21 vs 2.87, 4.70 vs 3.61, and 1.87 vs 1.65, respectively; all P < .001).
• A high waist-to-hip ratio showed a stronger association with nonsevere stroke than with severe stroke (OR, 1.37 vs 1.11, respectively; P < .001).
• Diabetes, poor diet, physical inactivity, and stress were linked to increased odds of both severe and nonsevere stroke, whereas alcohol consumption and high apolipoprotein B levels were linked to higher odds of only nonsevere stroke. No significant differences in odds were observed between stroke severities in matched individuals.

IN PRACTICE:

“Our findings emphasize the importance of controlling high blood pressure, which is the most important modifiable risk factor for stroke globally,” lead author Catriona Reddin, MB BCh, BAO, MSc, School of Medicine, University of Galway, in Ireland, said in a press release.

SOURCE:

The study was published online in Neurology.

LIMITATIONS:

The study limitations included potential unmeasured confounders; reliance on the mRS score, which may have underestimated stroke severity; and challenges with recruiting patients with severe stroke in a case-control study. Smoking-related comorbidities and regional or sex-related variations in alcohol intake may also have influenced the results.

DISCLOSURES:

The study was funded by various organizations, including health research councils and foundations from Canada, Sweden, and Scotland, and pharmaceutical companies such as AstraZeneca, Boehringer Ingelheim, Pfizer, and MSD. One investigator reported receiving funding from the Irish Clinical Academic Training Programme, the Wellcome Trust and the Health Research Board, the Health Service Executive, National Doctors Training and Planning, and the Health and Social Care, Research and Development Division in Northern Ireland. No other conflicts of interest were reported.

 

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE: 

Hypertension, atrial fibrillation, and smoking are more strongly linked to increased risk for severe stroke than nonsevere stroke, whereas a high waist-to-hip ratio is more closely associated with nonsevere stroke, a global study shows.

METHODOLOGY:

• The INTERSTROKE case-control study included nearly 27,000 participants, half of whom had a first acute stroke (ischemic or hemorrhagic) and the other half acting as age- and sex-matched controls.
• Participants (mean age, 62 years; 40% women) were recruited across 142 centers in 32 countries between 2007 and 2015. Baseline demographics and lifestyle risk factors for stroke were gathered using standardized questionnaires
• Modified Rankin Scale (mRS) scores measured within 72 hours of hospital admission were used to classify stroke severity (0-3, nonsevere stroke; 4-6, severe stroke).

TAKEAWAY:

• Among the participants with acute stroke, 64% had nonsevere stroke and 36% had severe stroke, based on the mRS.
• Hypertension, atrial fibrillation, and smoking showed a significantly stronger association with severe stroke than with nonsevere stroke (odds ratios [ORs], 3.21 vs 2.87, 4.70 vs 3.61, and 1.87 vs 1.65, respectively; all P < .001).
• A high waist-to-hip ratio showed a stronger association with nonsevere stroke than with severe stroke (OR, 1.37 vs 1.11, respectively; P < .001).
• Diabetes, poor diet, physical inactivity, and stress were linked to increased odds of both severe and nonsevere stroke, whereas alcohol consumption and high apolipoprotein B levels were linked to higher odds of only nonsevere stroke. No significant differences in odds were observed between stroke severities in matched individuals.

IN PRACTICE:

“Our findings emphasize the importance of controlling high blood pressure, which is the most important modifiable risk factor for stroke globally,” lead author Catriona Reddin, MB BCh, BAO, MSc, School of Medicine, University of Galway, in Ireland, said in a press release.

SOURCE:

The study was published online in Neurology.

LIMITATIONS:

The study limitations included potential unmeasured confounders; reliance on the mRS score, which may have underestimated stroke severity; and challenges with recruiting patients with severe stroke in a case-control study. Smoking-related comorbidities and regional or sex-related variations in alcohol intake may also have influenced the results.

DISCLOSURES:

The study was funded by various organizations, including health research councils and foundations from Canada, Sweden, and Scotland, and pharmaceutical companies such as AstraZeneca, Boehringer Ingelheim, Pfizer, and MSD. One investigator reported receiving funding from the Irish Clinical Academic Training Programme, the Wellcome Trust and the Health Research Board, the Health Service Executive, National Doctors Training and Planning, and the Health and Social Care, Research and Development Division in Northern Ireland. No other conflicts of interest were reported.

 

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE: 

Hypertension, atrial fibrillation, and smoking are more strongly linked to increased risk for severe stroke than nonsevere stroke, whereas a high waist-to-hip ratio is more closely associated with nonsevere stroke, a global study shows.

METHODOLOGY:

• The INTERSTROKE case-control study included nearly 27,000 participants, half of whom had a first acute stroke (ischemic or hemorrhagic) and the other half acting as age- and sex-matched controls.
• Participants (mean age, 62 years; 40% women) were recruited across 142 centers in 32 countries between 2007 and 2015. Baseline demographics and lifestyle risk factors for stroke were gathered using standardized questionnaires
• Modified Rankin Scale (mRS) scores measured within 72 hours of hospital admission were used to classify stroke severity (0-3, nonsevere stroke; 4-6, severe stroke).

TAKEAWAY:

• Among the participants with acute stroke, 64% had nonsevere stroke and 36% had severe stroke, based on the mRS.
• Hypertension, atrial fibrillation, and smoking showed a significantly stronger association with severe stroke than with nonsevere stroke (odds ratios [ORs], 3.21 vs 2.87, 4.70 vs 3.61, and 1.87 vs 1.65, respectively; all P < .001).
• A high waist-to-hip ratio showed a stronger association with nonsevere stroke than with severe stroke (OR, 1.37 vs 1.11, respectively; P < .001).
• Diabetes, poor diet, physical inactivity, and stress were linked to increased odds of both severe and nonsevere stroke, whereas alcohol consumption and high apolipoprotein B levels were linked to higher odds of only nonsevere stroke. No significant differences in odds were observed between stroke severities in matched individuals.

IN PRACTICE:

“Our findings emphasize the importance of controlling high blood pressure, which is the most important modifiable risk factor for stroke globally,” lead author Catriona Reddin, MB BCh, BAO, MSc, School of Medicine, University of Galway, in Ireland, said in a press release.

SOURCE:

The study was published online in Neurology.

LIMITATIONS:

The study limitations included potential unmeasured confounders; reliance on the mRS score, which may have underestimated stroke severity; and challenges with recruiting patients with severe stroke in a case-control study. Smoking-related comorbidities and regional or sex-related variations in alcohol intake may also have influenced the results.

DISCLOSURES:

The study was funded by various organizations, including health research councils and foundations from Canada, Sweden, and Scotland, and pharmaceutical companies such as AstraZeneca, Boehringer Ingelheim, Pfizer, and MSD. One investigator reported receiving funding from the Irish Clinical Academic Training Programme, the Wellcome Trust and the Health Research Board, the Health Service Executive, National Doctors Training and Planning, and the Health and Social Care, Research and Development Division in Northern Ireland. No other conflicts of interest were reported.

 

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.