Heidi Splete

The infants of obese pregnant women had a 55% higher adjusted perinatal death rate, compared with those of normal-weight pregnant women, but lower gestational age had a mediating effect, based on data from nearly 400,000 women-infant pairs.

“While some obesity-related causes of fetal death are known, the exact pathophysiology behind the effects of obesity on perinatal death are not completely understood,” Jeffrey N. Bone, MD, of the University of British Columbia, Vancouver, and colleagues wrote. Higher body mass index prior to pregnancy also is associated with preterm delivery, but the effect of gestational age on the association between BMI and infant mortality has not been well explored.

In a study published in PLOS ONE, the researchers reviewed data from nearly 400,000 women obtained through the British Columbia Perinatal Database Registry, which collects obstetric and neonatal data from hospital charts and from delivery records of home births. Births at less than 20 weeks’ gestation and late pregnancy terminations were excluded.

BMI was based on self-reported prepregnancy height and weight; of the 392,820 included women, 12.8% were classified as obese, 20.6% were overweight, 60.6% were normal weight, and 6.0% were underweight. Infants of women with higher BMI had a lower gestational age at delivery. Perinatal mortality occurred in 1,834 pregnancies (0.5%). In adjusted analysis, infant perinatal death was significantly more likely for obese women (adjusted odds ratio, 1.55) and overweight women (aOR, 1.22).

However, 63.1% of this association in obese women was mediated by gestational age of the infant at delivery, with aORs of 1.32 and 1.18 for natural indirect and natural direct effects, respectively, compared with that of normal-weight women. Similar, but lesser effects were noted for overweight women, with aORs of 1.11 and 1.10, respectively. “Direct effects were higher, and mediation was lower for stillbirth than for neonatal death, where the total effect was entirely indirect,” but the confidence intervals remained consistent with the primary analyses, the researchers noted.

The increased perinatal death rates of infants of obese and overweight women reflect data from previous studies, but the current study’s use of mediation analysis offers new insight on the mechanism by which perinatal death rates increase with higher maternal BMI, the researchers wrote.

The study findings were limited by several factors including the need to consider potential common risk factors for both perinatal death and early delivery that would be affected by maternal obesity, the researchers noted. Other limitations included the use of gestational age at stillbirth, which represents an approximation of fetal death in some cases, and the use of self-reports for prepregnancy maternal BMI.

However, the results were strengthened by the large, population-based design and information on potential confounding variables, and suggest that early gestational age at delivery may play a role in maternal obesity-related perinatal death risk.

“To better inform the pregnancy management in obese women, further studies should continue to disentangle the causal pathways under which obesity increases the risk of perinatal death, including, for example, gestational diabetes and other obesity-related pregnancy complications,” they concluded.
 

More testing and counseling are needed

The current study is important because obesity rates continue to increase in the reproductive-age population, Marissa Platner, MD, of Emory University, Atlanta, said in an interview. “Obesity has become a known risk factor for adverse pregnancy outcomes, specifically the risk of stillbirth and perinatal death. However, the authors correctly point out that the underlying cause of these perinatal deaths in women with obesity is unclear. Additionally, ACOG recently updated their clinical guidelines to recommend routine antenatal testing for women with obesity due to these increased rates of stillbirth.

“I was not surprised by these findings; similar to previous literature, the risks of perinatal death seem to have a dose-response relationship with increasing BMI. We know that women with prepregnancy obesity are also at higher risk of perinatal complications in the preterm period, which would increase the risk of perinatal death,” Dr. Platner said

“I think the take-home message for clinicians is twofold,” Dr. Platner said. First, “we need to take the updated antenatal testing guidelines from ACOG very seriously and implement these in our practices.” Second, “in the preconception or early antepartum period, these patients should be thoroughly counseled on the associated risks of pregnancy and discuss appropriate gestational weight gain guidelines and lifestyle modifications.”

However, “additional research is needed in a U.S. population with higher rates of obesity to determine the true effects of obesity on perinatal deaths and to further elucidate the underlying pathophysiology and disease processes that may lead to increased risk of both stillbirth and perinatal deaths,” Dr. Platner emphasized.

*This story was updated on March 23, 2022.

The study was supported by the Sick Kids Foundation and the Canadian Institute of Health Research. The researchers had no financial conflicts to disclose. Dr. Platner had no financial conflicts to disclose.

The infants of obese pregnant women had a 55% higher adjusted perinatal death rate, compared with those of normal-weight pregnant women, but lower gestational age had a mediating effect, based on data from nearly 400,000 women-infant pairs.

“While some obesity-related causes of fetal death are known, the exact pathophysiology behind the effects of obesity on perinatal death are not completely understood,” Jeffrey N. Bone, MD, of the University of British Columbia, Vancouver, and colleagues wrote. Higher body mass index prior to pregnancy also is associated with preterm delivery, but the effect of gestational age on the association between BMI and infant mortality has not been well explored.

In a study published in PLOS ONE, the researchers reviewed data from nearly 400,000 women obtained through the British Columbia Perinatal Database Registry, which collects obstetric and neonatal data from hospital charts and from delivery records of home births. Births at less than 20 weeks’ gestation and late pregnancy terminations were excluded.

BMI was based on self-reported prepregnancy height and weight; of the 392,820 included women, 12.8% were classified as obese, 20.6% were overweight, 60.6% were normal weight, and 6.0% were underweight. Infants of women with higher BMI had a lower gestational age at delivery. Perinatal mortality occurred in 1,834 pregnancies (0.5%). In adjusted analysis, infant perinatal death was significantly more likely for obese women (adjusted odds ratio, 1.55) and overweight women (aOR, 1.22).

However, 63.1% of this association in obese women was mediated by gestational age of the infant at delivery, with aORs of 1.32 and 1.18 for natural indirect and natural direct effects, respectively, compared with that of normal-weight women. Similar, but lesser effects were noted for overweight women, with aORs of 1.11 and 1.10, respectively. “Direct effects were higher, and mediation was lower for stillbirth than for neonatal death, where the total effect was entirely indirect,” but the confidence intervals remained consistent with the primary analyses, the researchers noted.

The increased perinatal death rates of infants of obese and overweight women reflect data from previous studies, but the current study’s use of mediation analysis offers new insight on the mechanism by which perinatal death rates increase with higher maternal BMI, the researchers wrote.

The study findings were limited by several factors including the need to consider potential common risk factors for both perinatal death and early delivery that would be affected by maternal obesity, the researchers noted. Other limitations included the use of gestational age at stillbirth, which represents an approximation of fetal death in some cases, and the use of self-reports for prepregnancy maternal BMI.

However, the results were strengthened by the large, population-based design and information on potential confounding variables, and suggest that early gestational age at delivery may play a role in maternal obesity-related perinatal death risk.

“To better inform the pregnancy management in obese women, further studies should continue to disentangle the causal pathways under which obesity increases the risk of perinatal death, including, for example, gestational diabetes and other obesity-related pregnancy complications,” they concluded.
 

More testing and counseling are needed

The current study is important because obesity rates continue to increase in the reproductive-age population, Marissa Platner, MD, of Emory University, Atlanta, said in an interview. “Obesity has become a known risk factor for adverse pregnancy outcomes, specifically the risk of stillbirth and perinatal death. However, the authors correctly point out that the underlying cause of these perinatal deaths in women with obesity is unclear. Additionally, ACOG recently updated their clinical guidelines to recommend routine antenatal testing for women with obesity due to these increased rates of stillbirth.

“I was not surprised by these findings; similar to previous literature, the risks of perinatal death seem to have a dose-response relationship with increasing BMI. We know that women with prepregnancy obesity are also at higher risk of perinatal complications in the preterm period, which would increase the risk of perinatal death,” Dr. Platner said

“I think the take-home message for clinicians is twofold,” Dr. Platner said. First, “we need to take the updated antenatal testing guidelines from ACOG very seriously and implement these in our practices.” Second, “in the preconception or early antepartum period, these patients should be thoroughly counseled on the associated risks of pregnancy and discuss appropriate gestational weight gain guidelines and lifestyle modifications.”

However, “additional research is needed in a U.S. population with higher rates of obesity to determine the true effects of obesity on perinatal deaths and to further elucidate the underlying pathophysiology and disease processes that may lead to increased risk of both stillbirth and perinatal deaths,” Dr. Platner emphasized.

*This story was updated on March 23, 2022.

The study was supported by the Sick Kids Foundation and the Canadian Institute of Health Research. The researchers had no financial conflicts to disclose. Dr. Platner had no financial conflicts to disclose.

The infants of obese pregnant women had a 55% higher adjusted perinatal death rate, compared with those of normal-weight pregnant women, but lower gestational age had a mediating effect, based on data from nearly 400,000 women-infant pairs.

“While some obesity-related causes of fetal death are known, the exact pathophysiology behind the effects of obesity on perinatal death are not completely understood,” Jeffrey N. Bone, MD, of the University of British Columbia, Vancouver, and colleagues wrote. Higher body mass index prior to pregnancy also is associated with preterm delivery, but the effect of gestational age on the association between BMI and infant mortality has not been well explored.

In a study published in PLOS ONE, the researchers reviewed data from nearly 400,000 women obtained through the British Columbia Perinatal Database Registry, which collects obstetric and neonatal data from hospital charts and from delivery records of home births. Births at less than 20 weeks’ gestation and late pregnancy terminations were excluded.

BMI was based on self-reported prepregnancy height and weight; of the 392,820 included women, 12.8% were classified as obese, 20.6% were overweight, 60.6% were normal weight, and 6.0% were underweight. Infants of women with higher BMI had a lower gestational age at delivery. Perinatal mortality occurred in 1,834 pregnancies (0.5%). In adjusted analysis, infant perinatal death was significantly more likely for obese women (adjusted odds ratio, 1.55) and overweight women (aOR, 1.22).

However, 63.1% of this association in obese women was mediated by gestational age of the infant at delivery, with aORs of 1.32 and 1.18 for natural indirect and natural direct effects, respectively, compared with that of normal-weight women. Similar, but lesser effects were noted for overweight women, with aORs of 1.11 and 1.10, respectively. “Direct effects were higher, and mediation was lower for stillbirth than for neonatal death, where the total effect was entirely indirect,” but the confidence intervals remained consistent with the primary analyses, the researchers noted.

The increased perinatal death rates of infants of obese and overweight women reflect data from previous studies, but the current study’s use of mediation analysis offers new insight on the mechanism by which perinatal death rates increase with higher maternal BMI, the researchers wrote.

The study findings were limited by several factors including the need to consider potential common risk factors for both perinatal death and early delivery that would be affected by maternal obesity, the researchers noted. Other limitations included the use of gestational age at stillbirth, which represents an approximation of fetal death in some cases, and the use of self-reports for prepregnancy maternal BMI.

However, the results were strengthened by the large, population-based design and information on potential confounding variables, and suggest that early gestational age at delivery may play a role in maternal obesity-related perinatal death risk.

“To better inform the pregnancy management in obese women, further studies should continue to disentangle the causal pathways under which obesity increases the risk of perinatal death, including, for example, gestational diabetes and other obesity-related pregnancy complications,” they concluded.
 

More testing and counseling are needed

The current study is important because obesity rates continue to increase in the reproductive-age population, Marissa Platner, MD, of Emory University, Atlanta, said in an interview. “Obesity has become a known risk factor for adverse pregnancy outcomes, specifically the risk of stillbirth and perinatal death. However, the authors correctly point out that the underlying cause of these perinatal deaths in women with obesity is unclear. Additionally, ACOG recently updated their clinical guidelines to recommend routine antenatal testing for women with obesity due to these increased rates of stillbirth.

“I was not surprised by these findings; similar to previous literature, the risks of perinatal death seem to have a dose-response relationship with increasing BMI. We know that women with prepregnancy obesity are also at higher risk of perinatal complications in the preterm period, which would increase the risk of perinatal death,” Dr. Platner said

“I think the take-home message for clinicians is twofold,” Dr. Platner said. First, “we need to take the updated antenatal testing guidelines from ACOG very seriously and implement these in our practices.” Second, “in the preconception or early antepartum period, these patients should be thoroughly counseled on the associated risks of pregnancy and discuss appropriate gestational weight gain guidelines and lifestyle modifications.”

However, “additional research is needed in a U.S. population with higher rates of obesity to determine the true effects of obesity on perinatal deaths and to further elucidate the underlying pathophysiology and disease processes that may lead to increased risk of both stillbirth and perinatal deaths,” Dr. Platner emphasized.

*This story was updated on March 23, 2022.

The study was supported by the Sick Kids Foundation and the Canadian Institute of Health Research. The researchers had no financial conflicts to disclose. Dr. Platner had no financial conflicts to disclose.

An intervention with extra virgin olive oil in a pilot study of 22 patients significantly improved biomarkers for early stage chronic lymphocytic leukemia (CLL).

Olive oil is a major component of the Mediterranean diet, and olive phenols have been shown to convey antioxidant, anti-inflammatory, anticancer, neuroprotective, and antidiabetic effects by modulating various molecular pathways, Andrea Paola Rojas Gil, PhD, of the University of Peloponnese, Tripoli, Greece, and colleagues wrote.

In most patients, CLL is incurable, but those at the early stages do not need immediate therapy and may benefit from an intervention to prevent disease progression, the authors wrote. Previous research suggested that dietary intervention exerts a salutary effect on early CLL, and in vitro studies suggested that oleocanthal, a component of extra virgin olive oil, induced anticancer activity.

In a study published in Frontiers in Oncology, the researchers enrolled adults with early stage CLL who had not undergone chemotherapy or other treatment. All patients adhered to a Mediterranean-style diet.

After a washout period of 9-12 months, the researchers randomized 22 patients to extra virgin olive oil high in oleocanthal and oleacein (high OC/OL-EVOO). Patients in the intervention group consumed 40 mL/day of high OC/OL-EVOO before meals. Their average age was 71 years; 10 were women and 12 were men.

The primary outcomes included changes in hematological, biochemical, and apoptotic markers. After 6 months, patients in the intervention group showed a statistically significant reduction in white blood cells and lymphocyte count, compared with measurements taken 3 months before the intervention. The WBC decrease was greatest among patients with the highest WBC levels at baseline.

As for biochemical markers, the researchers observed a significant decrease in glucose levels during the intervention, but no significant effects on metabolic indexes or renal function.

After 3 months and also after 6 months of the olive oil intervention, patients showed a significant increase in the apoptotic markers ccK18 and Apo1-Fas (P ≤ .05 for both), as well as an increase in the cell cycle negative regulator p21. The dietary intervention also was associated with significant decreases in expression of the antiapoptotic protein survivin and in cyclin D, a positive cell cycle regulator protein.

Further, patients who had a high ccK18 level at baseline showed a significantly greater increase in ccK18 after the intervention, compared with those with lower ccK18 at baseline (P = .001).

Notably, “a negative correlation of the WBC at the end of the dietary intervention with the fluctuation of the protein expression of the apoptotic marker ccK18 (final – initial) was observed,” the researchers wrote in their discussion.

The study findings were limited by several factors including the small sample size, short intervention time, and pilot design, the researchers said. Other limitations include the possible effect of other unmeasured properties of olive oil.

However, the results reflect previous studies showing the benefits of a Mediterranean-type diet, and they represent the first clinical trial to indicate possible beneficial effects from oleocanthal and oleacein on the progression of CLL. Therefore, the authors concluded, the study is worthy of a large, multicenter trial.
 

Pilot data merit more research

In an interview, corresponding author Prokopios Magiatis, PhD, noted that CLL is “the most commonly diagnosed adult leukemia in Western countries and is responsible for about one in four cases of all leukemias.” CLL remains incurable in most patients, and ways to delay disease progression are needed.

“Oleocanthal is the active ingredient of early harvest olive oil with proven anticancer activities in vitro and in vivo,” Dr. Magiatis explained. “For this reason, it was a unique challenge to investigate the anticancer activity of this compound for the first time in humans through the dietary consumption of specifically selected olive oil.” He expressed surprise at the beneficial effects of high-oleocanthal olive oil, not only to the white blood cells, but also to glucose levels.

“It seems that oleocanthal can activate mechanisms related to the apoptosis of cancer cells, and also mechanisms related to blood glucose regulation without affecting any normal cells of the body,” he said. “All anticancer drugs usually have severe side effects, however the administration of 25 mg of oleocanthal through the dietary consumption of olive oil did not present any harmful effects for at least 6 months of everyday use.

“The addition of naturally produced high-oleocanthal olive oil in the diet of early-stage CLL patients at a dose of three tablespoons per day [40 mL] is a practice that may lower the cancerous white blood cells of the patients without any risk,” said Dr. Magiatis. “High-oleocanthal early-harvest olive oil has been consumed for centuries, and may be the key of longevity of several Mediterranean populations.

“In our study, the number of the white blood cells returned back to the number it was one year before the initiation of the study; this clearly shows that it could be a significant factor for the delay of the progress of the disease,” he said.

The current trial was a pilot study in one hospital with only 22 patients for 6 months, said Dr. Magiatis. “We are currently preparing the expansion of the study to other hospitals and other countries, and we aim to include at least 100 patients for at least 1 year, to validate the already-obtained beneficial results.”

The clinical trial is supported by the nonprofit organization World Olive Center for Health, he added.

The current study received no outside funding. The researchers had no financial conflicts to disclose.

An intervention with extra virgin olive oil in a pilot study of 22 patients significantly improved biomarkers for early stage chronic lymphocytic leukemia (CLL).

Olive oil is a major component of the Mediterranean diet, and olive phenols have been shown to convey antioxidant, anti-inflammatory, anticancer, neuroprotective, and antidiabetic effects by modulating various molecular pathways, Andrea Paola Rojas Gil, PhD, of the University of Peloponnese, Tripoli, Greece, and colleagues wrote.

In most patients, CLL is incurable, but those at the early stages do not need immediate therapy and may benefit from an intervention to prevent disease progression, the authors wrote. Previous research suggested that dietary intervention exerts a salutary effect on early CLL, and in vitro studies suggested that oleocanthal, a component of extra virgin olive oil, induced anticancer activity.

In a study published in Frontiers in Oncology, the researchers enrolled adults with early stage CLL who had not undergone chemotherapy or other treatment. All patients adhered to a Mediterranean-style diet.

After a washout period of 9-12 months, the researchers randomized 22 patients to extra virgin olive oil high in oleocanthal and oleacein (high OC/OL-EVOO). Patients in the intervention group consumed 40 mL/day of high OC/OL-EVOO before meals. Their average age was 71 years; 10 were women and 12 were men.

The primary outcomes included changes in hematological, biochemical, and apoptotic markers. After 6 months, patients in the intervention group showed a statistically significant reduction in white blood cells and lymphocyte count, compared with measurements taken 3 months before the intervention. The WBC decrease was greatest among patients with the highest WBC levels at baseline.

As for biochemical markers, the researchers observed a significant decrease in glucose levels during the intervention, but no significant effects on metabolic indexes or renal function.

After 3 months and also after 6 months of the olive oil intervention, patients showed a significant increase in the apoptotic markers ccK18 and Apo1-Fas (P ≤ .05 for both), as well as an increase in the cell cycle negative regulator p21. The dietary intervention also was associated with significant decreases in expression of the antiapoptotic protein survivin and in cyclin D, a positive cell cycle regulator protein.

Further, patients who had a high ccK18 level at baseline showed a significantly greater increase in ccK18 after the intervention, compared with those with lower ccK18 at baseline (P = .001).

Notably, “a negative correlation of the WBC at the end of the dietary intervention with the fluctuation of the protein expression of the apoptotic marker ccK18 (final – initial) was observed,” the researchers wrote in their discussion.

The study findings were limited by several factors including the small sample size, short intervention time, and pilot design, the researchers said. Other limitations include the possible effect of other unmeasured properties of olive oil.

However, the results reflect previous studies showing the benefits of a Mediterranean-type diet, and they represent the first clinical trial to indicate possible beneficial effects from oleocanthal and oleacein on the progression of CLL. Therefore, the authors concluded, the study is worthy of a large, multicenter trial.
 

Pilot data merit more research

In an interview, corresponding author Prokopios Magiatis, PhD, noted that CLL is “the most commonly diagnosed adult leukemia in Western countries and is responsible for about one in four cases of all leukemias.” CLL remains incurable in most patients, and ways to delay disease progression are needed.

“Oleocanthal is the active ingredient of early harvest olive oil with proven anticancer activities in vitro and in vivo,” Dr. Magiatis explained. “For this reason, it was a unique challenge to investigate the anticancer activity of this compound for the first time in humans through the dietary consumption of specifically selected olive oil.” He expressed surprise at the beneficial effects of high-oleocanthal olive oil, not only to the white blood cells, but also to glucose levels.

“It seems that oleocanthal can activate mechanisms related to the apoptosis of cancer cells, and also mechanisms related to blood glucose regulation without affecting any normal cells of the body,” he said. “All anticancer drugs usually have severe side effects, however the administration of 25 mg of oleocanthal through the dietary consumption of olive oil did not present any harmful effects for at least 6 months of everyday use.

“The addition of naturally produced high-oleocanthal olive oil in the diet of early-stage CLL patients at a dose of three tablespoons per day [40 mL] is a practice that may lower the cancerous white blood cells of the patients without any risk,” said Dr. Magiatis. “High-oleocanthal early-harvest olive oil has been consumed for centuries, and may be the key of longevity of several Mediterranean populations.

“In our study, the number of the white blood cells returned back to the number it was one year before the initiation of the study; this clearly shows that it could be a significant factor for the delay of the progress of the disease,” he said.

The current trial was a pilot study in one hospital with only 22 patients for 6 months, said Dr. Magiatis. “We are currently preparing the expansion of the study to other hospitals and other countries, and we aim to include at least 100 patients for at least 1 year, to validate the already-obtained beneficial results.”

The clinical trial is supported by the nonprofit organization World Olive Center for Health, he added.

The current study received no outside funding. The researchers had no financial conflicts to disclose.

An intervention with extra virgin olive oil in a pilot study of 22 patients significantly improved biomarkers for early stage chronic lymphocytic leukemia (CLL).

Olive oil is a major component of the Mediterranean diet, and olive phenols have been shown to convey antioxidant, anti-inflammatory, anticancer, neuroprotective, and antidiabetic effects by modulating various molecular pathways, Andrea Paola Rojas Gil, PhD, of the University of Peloponnese, Tripoli, Greece, and colleagues wrote.

In most patients, CLL is incurable, but those at the early stages do not need immediate therapy and may benefit from an intervention to prevent disease progression, the authors wrote. Previous research suggested that dietary intervention exerts a salutary effect on early CLL, and in vitro studies suggested that oleocanthal, a component of extra virgin olive oil, induced anticancer activity.

In a study published in Frontiers in Oncology, the researchers enrolled adults with early stage CLL who had not undergone chemotherapy or other treatment. All patients adhered to a Mediterranean-style diet.

After a washout period of 9-12 months, the researchers randomized 22 patients to extra virgin olive oil high in oleocanthal and oleacein (high OC/OL-EVOO). Patients in the intervention group consumed 40 mL/day of high OC/OL-EVOO before meals. Their average age was 71 years; 10 were women and 12 were men.

The primary outcomes included changes in hematological, biochemical, and apoptotic markers. After 6 months, patients in the intervention group showed a statistically significant reduction in white blood cells and lymphocyte count, compared with measurements taken 3 months before the intervention. The WBC decrease was greatest among patients with the highest WBC levels at baseline.

As for biochemical markers, the researchers observed a significant decrease in glucose levels during the intervention, but no significant effects on metabolic indexes or renal function.

After 3 months and also after 6 months of the olive oil intervention, patients showed a significant increase in the apoptotic markers ccK18 and Apo1-Fas (P ≤ .05 for both), as well as an increase in the cell cycle negative regulator p21. The dietary intervention also was associated with significant decreases in expression of the antiapoptotic protein survivin and in cyclin D, a positive cell cycle regulator protein.

Further, patients who had a high ccK18 level at baseline showed a significantly greater increase in ccK18 after the intervention, compared with those with lower ccK18 at baseline (P = .001).

Notably, “a negative correlation of the WBC at the end of the dietary intervention with the fluctuation of the protein expression of the apoptotic marker ccK18 (final – initial) was observed,” the researchers wrote in their discussion.

The study findings were limited by several factors including the small sample size, short intervention time, and pilot design, the researchers said. Other limitations include the possible effect of other unmeasured properties of olive oil.

However, the results reflect previous studies showing the benefits of a Mediterranean-type diet, and they represent the first clinical trial to indicate possible beneficial effects from oleocanthal and oleacein on the progression of CLL. Therefore, the authors concluded, the study is worthy of a large, multicenter trial.
 

Pilot data merit more research

In an interview, corresponding author Prokopios Magiatis, PhD, noted that CLL is “the most commonly diagnosed adult leukemia in Western countries and is responsible for about one in four cases of all leukemias.” CLL remains incurable in most patients, and ways to delay disease progression are needed.

“Oleocanthal is the active ingredient of early harvest olive oil with proven anticancer activities in vitro and in vivo,” Dr. Magiatis explained. “For this reason, it was a unique challenge to investigate the anticancer activity of this compound for the first time in humans through the dietary consumption of specifically selected olive oil.” He expressed surprise at the beneficial effects of high-oleocanthal olive oil, not only to the white blood cells, but also to glucose levels.

“It seems that oleocanthal can activate mechanisms related to the apoptosis of cancer cells, and also mechanisms related to blood glucose regulation without affecting any normal cells of the body,” he said. “All anticancer drugs usually have severe side effects, however the administration of 25 mg of oleocanthal through the dietary consumption of olive oil did not present any harmful effects for at least 6 months of everyday use.

“The addition of naturally produced high-oleocanthal olive oil in the diet of early-stage CLL patients at a dose of three tablespoons per day [40 mL] is a practice that may lower the cancerous white blood cells of the patients without any risk,” said Dr. Magiatis. “High-oleocanthal early-harvest olive oil has been consumed for centuries, and may be the key of longevity of several Mediterranean populations.

“In our study, the number of the white blood cells returned back to the number it was one year before the initiation of the study; this clearly shows that it could be a significant factor for the delay of the progress of the disease,” he said.

The current trial was a pilot study in one hospital with only 22 patients for 6 months, said Dr. Magiatis. “We are currently preparing the expansion of the study to other hospitals and other countries, and we aim to include at least 100 patients for at least 1 year, to validate the already-obtained beneficial results.”

The clinical trial is supported by the nonprofit organization World Olive Center for Health, he added.

The current study received no outside funding. The researchers had no financial conflicts to disclose.

The incremental step test is a highly reliable measure of exercise capacity in patients with moderate to severe asthma, based on data from 50 individuals.

Asthma patients often limit their physical exercise to avoid respiratory symptoms, which creates a downward spiral of reduced exercise capacity and ability to perform activities of daily living, wrote Renata Cléia Claudino Barbosa of the University of Sao Paulo and colleagues. “However, exercise training has been shown to be an important adjunctive therapy for asthma treatment that improves exercise capacity and health-related quality of life,” they wrote.

Step tests have been identified as a simpler, less costly alternative to cardiopulmonary exercise tests to measure exercise capacity in patients with chronic obstructive pulmonary disease, but their effectiveness for asthma patients has not investigated, the researchers said.

In a study published in Pulmonology, the researchers recruited 50 adults with moderate or severe asthma during routine care at a university hospital. The participants had been clinically stable for at least 6 months, with no hospitalizations, emergency care, or medication changes in the past 30 days. All participants received short-acting and long-acting bronchodilators and inhaled corticosteroids. The patients ranged in age from 18 to 60 years, with body mass index measures from 20 kg/m² to 40 kg/m².

Participants were randomized to tests on 2 nonconsecutive days at least 48 hours apart. On the first day, patients completed asthma control questionnaires and lung function tests, then performed either a cardiopulmonary exercise test (CPET) or two incremental step tests (IST-1 and IST-2). On the second day, they performed the other test. Participants were instructed to use bronchodilators 15 minutes before each test.

The step test involved stepping up and down on a 20-cm high wooden bench.

Overall, the peak oxygen uptakes were 27.6 mL/kg per minute for the CPET, 22.3 mL/kg per minute for the first IST, and 23.3 mL/kg per minute for the second IST.

“The IST with better performance regarding the peak VO₂ value was called the best IST (b-IST),” and these values were used for validity and interpretability analyses, the researchers wrote.

In a reliability analysis, the intraclass correlation coefficient (ICC) was 0.93, the measurement error was 2.5%, and the construct validity for peak VO₂ was significantly more reliable than the CPET (P < 0.001), the researchers said. The ICC for total number of steps was 0.88.

Notably, “the present study also demonstrated that IST is not interchangeable with the CPET since the subjects with moderate to severe asthma did not reach the maximal exercise capacity,” the researchers said. However, “we believe that the IST is superior to walking tests in subjects with asthma because it is an activity that requires greater ventilation in a subject’s daily life,” they said.

The study findings were limited by several factors including the relatively small study population and the small number of male patients, which may limit generalizability to males with asthma or other asthma endotypes, the researchers said. However, the results were strengthened by the randomized design, and support the value of the IST as a cost-effective option for assessing exercise capacity, preferably with two step tests to minimize the learning effect, they said. Additional research is needed to determine whether IST can assess responsiveness to pharmacological and nonpharmalogical treatments in asthma patients, they noted.

The study was supported by the Sao Paulo Research Foundation, Conselho Nacional de Pesquisa, and Coordination of Improvement of Higher Level Personnel--Brazil. The researchers had no financial conflicts to disclose.

The incremental step test is a highly reliable measure of exercise capacity in patients with moderate to severe asthma, based on data from 50 individuals.

Asthma patients often limit their physical exercise to avoid respiratory symptoms, which creates a downward spiral of reduced exercise capacity and ability to perform activities of daily living, wrote Renata Cléia Claudino Barbosa of the University of Sao Paulo and colleagues. “However, exercise training has been shown to be an important adjunctive therapy for asthma treatment that improves exercise capacity and health-related quality of life,” they wrote.

Step tests have been identified as a simpler, less costly alternative to cardiopulmonary exercise tests to measure exercise capacity in patients with chronic obstructive pulmonary disease, but their effectiveness for asthma patients has not investigated, the researchers said.

In a study published in Pulmonology, the researchers recruited 50 adults with moderate or severe asthma during routine care at a university hospital. The participants had been clinically stable for at least 6 months, with no hospitalizations, emergency care, or medication changes in the past 30 days. All participants received short-acting and long-acting bronchodilators and inhaled corticosteroids. The patients ranged in age from 18 to 60 years, with body mass index measures from 20 kg/m² to 40 kg/m².

Participants were randomized to tests on 2 nonconsecutive days at least 48 hours apart. On the first day, patients completed asthma control questionnaires and lung function tests, then performed either a cardiopulmonary exercise test (CPET) or two incremental step tests (IST-1 and IST-2). On the second day, they performed the other test. Participants were instructed to use bronchodilators 15 minutes before each test.

The step test involved stepping up and down on a 20-cm high wooden bench.

Overall, the peak oxygen uptakes were 27.6 mL/kg per minute for the CPET, 22.3 mL/kg per minute for the first IST, and 23.3 mL/kg per minute for the second IST.

“The IST with better performance regarding the peak VO₂ value was called the best IST (b-IST),” and these values were used for validity and interpretability analyses, the researchers wrote.

In a reliability analysis, the intraclass correlation coefficient (ICC) was 0.93, the measurement error was 2.5%, and the construct validity for peak VO₂ was significantly more reliable than the CPET (P < 0.001), the researchers said. The ICC for total number of steps was 0.88.

Notably, “the present study also demonstrated that IST is not interchangeable with the CPET since the subjects with moderate to severe asthma did not reach the maximal exercise capacity,” the researchers said. However, “we believe that the IST is superior to walking tests in subjects with asthma because it is an activity that requires greater ventilation in a subject’s daily life,” they said.

The study findings were limited by several factors including the relatively small study population and the small number of male patients, which may limit generalizability to males with asthma or other asthma endotypes, the researchers said. However, the results were strengthened by the randomized design, and support the value of the IST as a cost-effective option for assessing exercise capacity, preferably with two step tests to minimize the learning effect, they said. Additional research is needed to determine whether IST can assess responsiveness to pharmacological and nonpharmalogical treatments in asthma patients, they noted.

The study was supported by the Sao Paulo Research Foundation, Conselho Nacional de Pesquisa, and Coordination of Improvement of Higher Level Personnel--Brazil. The researchers had no financial conflicts to disclose.

The incremental step test is a highly reliable measure of exercise capacity in patients with moderate to severe asthma, based on data from 50 individuals.

Asthma patients often limit their physical exercise to avoid respiratory symptoms, which creates a downward spiral of reduced exercise capacity and ability to perform activities of daily living, wrote Renata Cléia Claudino Barbosa of the University of Sao Paulo and colleagues. “However, exercise training has been shown to be an important adjunctive therapy for asthma treatment that improves exercise capacity and health-related quality of life,” they wrote.

Step tests have been identified as a simpler, less costly alternative to cardiopulmonary exercise tests to measure exercise capacity in patients with chronic obstructive pulmonary disease, but their effectiveness for asthma patients has not investigated, the researchers said.

In a study published in Pulmonology, the researchers recruited 50 adults with moderate or severe asthma during routine care at a university hospital. The participants had been clinically stable for at least 6 months, with no hospitalizations, emergency care, or medication changes in the past 30 days. All participants received short-acting and long-acting bronchodilators and inhaled corticosteroids. The patients ranged in age from 18 to 60 years, with body mass index measures from 20 kg/m² to 40 kg/m².

Participants were randomized to tests on 2 nonconsecutive days at least 48 hours apart. On the first day, patients completed asthma control questionnaires and lung function tests, then performed either a cardiopulmonary exercise test (CPET) or two incremental step tests (IST-1 and IST-2). On the second day, they performed the other test. Participants were instructed to use bronchodilators 15 minutes before each test.

The step test involved stepping up and down on a 20-cm high wooden bench.

Overall, the peak oxygen uptakes were 27.6 mL/kg per minute for the CPET, 22.3 mL/kg per minute for the first IST, and 23.3 mL/kg per minute for the second IST.

“The IST with better performance regarding the peak VO₂ value was called the best IST (b-IST),” and these values were used for validity and interpretability analyses, the researchers wrote.

In a reliability analysis, the intraclass correlation coefficient (ICC) was 0.93, the measurement error was 2.5%, and the construct validity for peak VO₂ was significantly more reliable than the CPET (P < 0.001), the researchers said. The ICC for total number of steps was 0.88.

Notably, “the present study also demonstrated that IST is not interchangeable with the CPET since the subjects with moderate to severe asthma did not reach the maximal exercise capacity,” the researchers said. However, “we believe that the IST is superior to walking tests in subjects with asthma because it is an activity that requires greater ventilation in a subject’s daily life,” they said.

The study findings were limited by several factors including the relatively small study population and the small number of male patients, which may limit generalizability to males with asthma or other asthma endotypes, the researchers said. However, the results were strengthened by the randomized design, and support the value of the IST as a cost-effective option for assessing exercise capacity, preferably with two step tests to minimize the learning effect, they said. Additional research is needed to determine whether IST can assess responsiveness to pharmacological and nonpharmalogical treatments in asthma patients, they noted.

The study was supported by the Sao Paulo Research Foundation, Conselho Nacional de Pesquisa, and Coordination of Improvement of Higher Level Personnel--Brazil. The researchers had no financial conflicts to disclose.

Patients with cirrhosis and larger spontaneous shunt diameters showed a significantly greater increase in hepatic venous pressure gradient (HVPG) following balloon-occluded retrograde transvenous obliteration compared to patients with smaller shunt diameters, based on data from 34 adults.

Portal hypertension remains a key source of complications that greatly impact quality of life in patients with cirrhosis, wrote Akihisa Tatsumi, MD, of the University of Yamanashi, Japan, and colleagues. These patients sometimes develop spontaneous portosystemic shunts (SPSS) to lower portal pressure, but these natural shunts are an incomplete solution – one that may contribute to liver dysfunction by reducing hepatic portal blood flow. However, the association of SPSS with liver functional reserve remains unclear, the researchers said.

Copyright Sebastian Kaulitzki/Thinkstock

Balloon-occluded retrograde transvenous obliteration (BRTO) is gaining popularity as a treatment for SPSS in patients with cirrhosis but determining the patients who will benefit from this procedure remains a challenge, the researchers wrote. “Apart from BRTO, some recent studies have reported the impact of the SPSS diameter on the future pathological state of the liver,” which prompted the question of whether SPSS diameter plays a role in predicting portal hypertension–related liver function at baseline and after BRTO, the researchers explained.

In their study, published in JGH Open, the researchers identified 34 cirrhotic patients with SPSS who underwent BRTO at a single center in Japan between 2006 and 2018; all of the patients were available for follow-up at least 6 months after the procedure.

The reasons for BRTO were intractable gastric varices in 18 patients and refractory hepatic encephalopathy with shunt in 16 patients; the mean observation period was 1,182 days (3.24 years). The median age of the patients was 66.5 years, and 53% were male. A majority (76%) of the patients had decompensated cirrhosis with Child-Pugh (CP) scores of B or C, and the maximum diameter of SPSS increased significantly with increased in CP scores (P < .001), the researchers noted.

Overall, at 6 months after BRTO, patients showed significant improvements in liver function from baseline. However, the improvement rate was lower in patients whose shunt diameter was 10 mm or less, and improvement was greatest when the shunt diameter was between 10 mm and 20 mm. “Because the CP score is a significant cofounding factor of the SPSS diameter, we next evaluated the changes in liver function classified by CP scores,” the researchers wrote. In this analysis, the post-BRTO changes in liver function in patients with CP scores of A or B still showed an association between improvement in liver function and larger shunt diameter, but this relationship did not extend to patients with CP scores of C, the researchers said.

A larger shunt diameter also was significantly associated with a greater increase in HVPG after balloon occlusion (P = .005).

“Considering that patients with large SPSS diameters might gain higher portal flow following elevation of HVPG after BRTO, it is natural that the larger the SPSS diameter, the greater the improvements in liver function,” the researchers wrote in their discussion of the findings. “However, such a clear correlation was evident only when the baseline CP scores were within A or B, and not in C, indicating that the improvement of liver function might not parallel HVPG increase in some CP C patients,” they noted.

The study was limited by several factors including the retrospective design from a single center and its small sample size, the researchers noted. Other limitations included selecting and measuring only the largest SPSS of each patient and lack of data on the impact of SPSS diameter on overall survival, they said.

However, the results suggest that SPSS diameter may serve not only as an indicator of portal hypertension involvement at baseline, but also as a useful clinical predictor of liver function after BRTO, they concluded.
 

Study supports potential benefits of BRTO

“While the association between SPSS and complications of portal hypertension such as variceal bleeding and hepatic encephalopathy have been known, data are lacking in regard to characteristics of SPSS that are most dysfunctional, and whether certain patients may benefit from BRTO to occlude these shunts,” Khashayar Farsad, MD, of Oregon Health & Science University, Portland, said in an interview.

“The results are in many ways expected based on anticipated impact of larger versus smaller SPSS in overall liver function,” Dr. Farsad noted. “The study, however, does show a nice correlation between several factors involved in liver function and their changes depending on shunt diameter, correlated with changes in the relative venous pressure gradient across the liver,” he said. “Furthermore, the finding that changes were most evident in those with relatively preserved liver function [Child-Turcotte-Pugh grades A and B] suggests less of a relationship between SPSS and liver function in those with more decompensated liver disease,” he added.

“The impact of the study is significantly limited by its retrospective design, small numbers with potential patient heterogeneity, and lack of a control cohort,” said Dr. Farsad. However, “The major take-home message for clinicians is a potential signal that the size of the SPSS at baseline may predict the impact of the SPSS on liver function, and therefore, the potential benefit of a procedure such as BRTO to positively influence this,” he said. “Additional research with larger cohorts and a prospective study design would be warranted, however, before this information would be meaningful in daily clinical decision making,” he emphasized.

The study was supported by the Research Program on Hepatitis of the Japanese Agency for Medical Research and Development. The researchers had no financial conflicts to disclose. Dr. Farsad disclosed research support from W.L. Gore & Associates, Guerbet LLC, Boston Scientific, and Exelixis; serving as a consultant for NeuWave Medical, Cook Medical, Guerbet LLC, and Eisai, and holding equity in Auxetics Inc.

Patients with cirrhosis and larger spontaneous shunt diameters showed a significantly greater increase in hepatic venous pressure gradient (HVPG) following balloon-occluded retrograde transvenous obliteration compared to patients with smaller shunt diameters, based on data from 34 adults.

Portal hypertension remains a key source of complications that greatly impact quality of life in patients with cirrhosis, wrote Akihisa Tatsumi, MD, of the University of Yamanashi, Japan, and colleagues. These patients sometimes develop spontaneous portosystemic shunts (SPSS) to lower portal pressure, but these natural shunts are an incomplete solution – one that may contribute to liver dysfunction by reducing hepatic portal blood flow. However, the association of SPSS with liver functional reserve remains unclear, the researchers said.

Copyright Sebastian Kaulitzki/Thinkstock

Balloon-occluded retrograde transvenous obliteration (BRTO) is gaining popularity as a treatment for SPSS in patients with cirrhosis but determining the patients who will benefit from this procedure remains a challenge, the researchers wrote. “Apart from BRTO, some recent studies have reported the impact of the SPSS diameter on the future pathological state of the liver,” which prompted the question of whether SPSS diameter plays a role in predicting portal hypertension–related liver function at baseline and after BRTO, the researchers explained.

In their study, published in JGH Open, the researchers identified 34 cirrhotic patients with SPSS who underwent BRTO at a single center in Japan between 2006 and 2018; all of the patients were available for follow-up at least 6 months after the procedure.

The reasons for BRTO were intractable gastric varices in 18 patients and refractory hepatic encephalopathy with shunt in 16 patients; the mean observation period was 1,182 days (3.24 years). The median age of the patients was 66.5 years, and 53% were male. A majority (76%) of the patients had decompensated cirrhosis with Child-Pugh (CP) scores of B or C, and the maximum diameter of SPSS increased significantly with increased in CP scores (P < .001), the researchers noted.

Overall, at 6 months after BRTO, patients showed significant improvements in liver function from baseline. However, the improvement rate was lower in patients whose shunt diameter was 10 mm or less, and improvement was greatest when the shunt diameter was between 10 mm and 20 mm. “Because the CP score is a significant cofounding factor of the SPSS diameter, we next evaluated the changes in liver function classified by CP scores,” the researchers wrote. In this analysis, the post-BRTO changes in liver function in patients with CP scores of A or B still showed an association between improvement in liver function and larger shunt diameter, but this relationship did not extend to patients with CP scores of C, the researchers said.

A larger shunt diameter also was significantly associated with a greater increase in HVPG after balloon occlusion (P = .005).

“Considering that patients with large SPSS diameters might gain higher portal flow following elevation of HVPG after BRTO, it is natural that the larger the SPSS diameter, the greater the improvements in liver function,” the researchers wrote in their discussion of the findings. “However, such a clear correlation was evident only when the baseline CP scores were within A or B, and not in C, indicating that the improvement of liver function might not parallel HVPG increase in some CP C patients,” they noted.

The study was limited by several factors including the retrospective design from a single center and its small sample size, the researchers noted. Other limitations included selecting and measuring only the largest SPSS of each patient and lack of data on the impact of SPSS diameter on overall survival, they said.

However, the results suggest that SPSS diameter may serve not only as an indicator of portal hypertension involvement at baseline, but also as a useful clinical predictor of liver function after BRTO, they concluded.
 

Study supports potential benefits of BRTO

“While the association between SPSS and complications of portal hypertension such as variceal bleeding and hepatic encephalopathy have been known, data are lacking in regard to characteristics of SPSS that are most dysfunctional, and whether certain patients may benefit from BRTO to occlude these shunts,” Khashayar Farsad, MD, of Oregon Health & Science University, Portland, said in an interview.

“The results are in many ways expected based on anticipated impact of larger versus smaller SPSS in overall liver function,” Dr. Farsad noted. “The study, however, does show a nice correlation between several factors involved in liver function and their changes depending on shunt diameter, correlated with changes in the relative venous pressure gradient across the liver,” he said. “Furthermore, the finding that changes were most evident in those with relatively preserved liver function [Child-Turcotte-Pugh grades A and B] suggests less of a relationship between SPSS and liver function in those with more decompensated liver disease,” he added.

“The impact of the study is significantly limited by its retrospective design, small numbers with potential patient heterogeneity, and lack of a control cohort,” said Dr. Farsad. However, “The major take-home message for clinicians is a potential signal that the size of the SPSS at baseline may predict the impact of the SPSS on liver function, and therefore, the potential benefit of a procedure such as BRTO to positively influence this,” he said. “Additional research with larger cohorts and a prospective study design would be warranted, however, before this information would be meaningful in daily clinical decision making,” he emphasized.

The study was supported by the Research Program on Hepatitis of the Japanese Agency for Medical Research and Development. The researchers had no financial conflicts to disclose. Dr. Farsad disclosed research support from W.L. Gore & Associates, Guerbet LLC, Boston Scientific, and Exelixis; serving as a consultant for NeuWave Medical, Cook Medical, Guerbet LLC, and Eisai, and holding equity in Auxetics Inc.

Patients with cirrhosis and larger spontaneous shunt diameters showed a significantly greater increase in hepatic venous pressure gradient (HVPG) following balloon-occluded retrograde transvenous obliteration compared to patients with smaller shunt diameters, based on data from 34 adults.

Portal hypertension remains a key source of complications that greatly impact quality of life in patients with cirrhosis, wrote Akihisa Tatsumi, MD, of the University of Yamanashi, Japan, and colleagues. These patients sometimes develop spontaneous portosystemic shunts (SPSS) to lower portal pressure, but these natural shunts are an incomplete solution – one that may contribute to liver dysfunction by reducing hepatic portal blood flow. However, the association of SPSS with liver functional reserve remains unclear, the researchers said.

Copyright Sebastian Kaulitzki/Thinkstock

Balloon-occluded retrograde transvenous obliteration (BRTO) is gaining popularity as a treatment for SPSS in patients with cirrhosis but determining the patients who will benefit from this procedure remains a challenge, the researchers wrote. “Apart from BRTO, some recent studies have reported the impact of the SPSS diameter on the future pathological state of the liver,” which prompted the question of whether SPSS diameter plays a role in predicting portal hypertension–related liver function at baseline and after BRTO, the researchers explained.

In their study, published in JGH Open, the researchers identified 34 cirrhotic patients with SPSS who underwent BRTO at a single center in Japan between 2006 and 2018; all of the patients were available for follow-up at least 6 months after the procedure.

The reasons for BRTO were intractable gastric varices in 18 patients and refractory hepatic encephalopathy with shunt in 16 patients; the mean observation period was 1,182 days (3.24 years). The median age of the patients was 66.5 years, and 53% were male. A majority (76%) of the patients had decompensated cirrhosis with Child-Pugh (CP) scores of B or C, and the maximum diameter of SPSS increased significantly with increased in CP scores (P < .001), the researchers noted.

Overall, at 6 months after BRTO, patients showed significant improvements in liver function from baseline. However, the improvement rate was lower in patients whose shunt diameter was 10 mm or less, and improvement was greatest when the shunt diameter was between 10 mm and 20 mm. “Because the CP score is a significant cofounding factor of the SPSS diameter, we next evaluated the changes in liver function classified by CP scores,” the researchers wrote. In this analysis, the post-BRTO changes in liver function in patients with CP scores of A or B still showed an association between improvement in liver function and larger shunt diameter, but this relationship did not extend to patients with CP scores of C, the researchers said.

A larger shunt diameter also was significantly associated with a greater increase in HVPG after balloon occlusion (P = .005).

“Considering that patients with large SPSS diameters might gain higher portal flow following elevation of HVPG after BRTO, it is natural that the larger the SPSS diameter, the greater the improvements in liver function,” the researchers wrote in their discussion of the findings. “However, such a clear correlation was evident only when the baseline CP scores were within A or B, and not in C, indicating that the improvement of liver function might not parallel HVPG increase in some CP C patients,” they noted.

The study was limited by several factors including the retrospective design from a single center and its small sample size, the researchers noted. Other limitations included selecting and measuring only the largest SPSS of each patient and lack of data on the impact of SPSS diameter on overall survival, they said.

However, the results suggest that SPSS diameter may serve not only as an indicator of portal hypertension involvement at baseline, but also as a useful clinical predictor of liver function after BRTO, they concluded.
 

Study supports potential benefits of BRTO

“While the association between SPSS and complications of portal hypertension such as variceal bleeding and hepatic encephalopathy have been known, data are lacking in regard to characteristics of SPSS that are most dysfunctional, and whether certain patients may benefit from BRTO to occlude these shunts,” Khashayar Farsad, MD, of Oregon Health & Science University, Portland, said in an interview.

“The results are in many ways expected based on anticipated impact of larger versus smaller SPSS in overall liver function,” Dr. Farsad noted. “The study, however, does show a nice correlation between several factors involved in liver function and their changes depending on shunt diameter, correlated with changes in the relative venous pressure gradient across the liver,” he said. “Furthermore, the finding that changes were most evident in those with relatively preserved liver function [Child-Turcotte-Pugh grades A and B] suggests less of a relationship between SPSS and liver function in those with more decompensated liver disease,” he added.

“The impact of the study is significantly limited by its retrospective design, small numbers with potential patient heterogeneity, and lack of a control cohort,” said Dr. Farsad. However, “The major take-home message for clinicians is a potential signal that the size of the SPSS at baseline may predict the impact of the SPSS on liver function, and therefore, the potential benefit of a procedure such as BRTO to positively influence this,” he said. “Additional research with larger cohorts and a prospective study design would be warranted, however, before this information would be meaningful in daily clinical decision making,” he emphasized.

The study was supported by the Research Program on Hepatitis of the Japanese Agency for Medical Research and Development. The researchers had no financial conflicts to disclose. Dr. Farsad disclosed research support from W.L. Gore & Associates, Guerbet LLC, Boston Scientific, and Exelixis; serving as a consultant for NeuWave Medical, Cook Medical, Guerbet LLC, and Eisai, and holding equity in Auxetics Inc.

All Kawasaki disease (KD) patients should be treated first with intravenous immunoglobulin, according to an updated guideline issued jointly by the American College of Rheumatology and the Vasculitis Foundation.

KD has low mortality when treated appropriately, guideline first author Mark Gorelik, MD, assistant professor of pediatrics at Columbia University, New York, and colleagues wrote.

The update is important at this time because new evidence continues to emerge in the clinical management of KD, Dr. Gorelik said in an interview.

“In addition, this guideline approaches Kawasaki disease from a perspective of acting as an adjunct to the already existing and excellent American Heart Association guidelines by adding information in areas that rheumatologists may play a role,” Dr. Gorelik said. “This is specifically regarding patients who may require additional therapy beyond standard IVIg, such as patients who may be at higher risk of morbidity from disease and patients who have refractory disease,” he explained.

The guideline, published in Arthritis & Rheumatology, includes 11 recommendations, 1 good practice statement, and 1 ungraded position statement. The good practice statement emphasizes that all patients with KD should be initially treated with IVIg.

The position statement advises that either nonglucocorticoid immunosuppressive therapy or glucocorticoids may be used for patients with acute KD whose fever persists despite repeated IVIg treatment. No clinical evidence currently supports the superiority of either nonglucocorticoid immunosuppressive therapy or glucocorticoids; therefore, the authors support the use of either based on what is appropriate in any given clinical situation. Although optimal dosage and duration of glucocorticoids have yet to be determined in a U.S. population, the authors described a typical glucocorticoid dosage as starting prednisone at 2 mg/kg per day, with a maximum of 60 mg/day, and dose tapering over 15 days.

The 11 recommendations consist of 7 strong and 4 conditional recommendations. The strong recommendations focus on prompt treatment of incomplete KD, treatment with aspirin, and obtaining an echocardiogram in patients with unexplained macrophage activation syndrome or shock. The conditional recommendations support using established therapy promptly at disease onset, then identifying cases in which additional therapy is needed.

Dr. Gorelik highlighted four clinical takeaways from the guideline. First, “patients with higher risk for complications do exist in Kawasaki disease, and that these patients can be treated more aggressively,” he said. “Specifically, patients with aneurysms seen at first ultrasound, and patients who are under 6 months, are more likely to have progressive and/or refractory disease; these patients can be treated with an adjunctive short course of corticosteroids.”

Second, “the use of high-dose aspirin for patients with Kawasaki disease does not have strong basis in evidence. While aspirin itself of some dose is necessary for patients with Kawasaki disease, use of either high- or low-dose aspirin has the same outcome for patients, and a physician may choose either of these in practice,” he said.

Third, “we continue to recommend that refractory patients with Kawasaki disease be treated with a second dose of IVIg; however, there are many scenarios in which a physician may choose either corticosteroids [either a single high dose of >10 mg/kg, or a short moderate-dose course of 2 mg/kg per day for 5-7 days] or a biologic agent such as infliximab. ... These are valid choices for therapy in patients with refractory Kawasaki disease,” he emphasized.

Fourth, “physicians should discard the idea of treating before [and conversely, not treating after] 10 days of fever,” Dr. Gorelik said. “Patients with Kawasaki disease should be treated as soon as the diagnosis is made, regardless of whether this patient is on day 5, day 12, or day 20 of symptoms.”

Update incorporates emerging evidence

Potential barriers to implementing the guideline in practice include the challenge of weaning doctors from practices that are habitual in medicine, Dr. Gorelik said. “One of these is the use of high-dose aspirin for Kawasaki disease; a number of studies have shown over the past decade or more that high-dose aspirin has no greater effect than lower-dose aspirin for Kawasaki disease. Despite all of these studies, the use of high-dose aspirin continued. High-dose aspirin for Kawasaki disease was used in the era prior to use of IVIg as an anti-inflammatory agent. However, it has poor efficacy in this regard, and the true benefit for aspirin is for anticoagulation for patients at risk of a clot, and this is just as effective in lower doses. Expressing this in a guideline could help to change practices by helping physicians understand not only what they are guided to do, but why.”

Additional research is needed to better identify high-risk patients in non-Japanese populations, he noted. “While studies from Japan suggest that higher-risk patients can be identified based on various parameters, these have not been well replicated in non-Japanese populations. Good research that identifies which patients may be more at risk in other populations would be helpful to more precisely target high-risk therapy.”

Other research needs include a clearer understanding of the best therapies for refractory patients, Dr. Gorelik said. “One area of the most difficulty was determining whether patients with refractory disease should have repeated IVIg or a switch to glucocorticoids and biologic agents. Some of this research is underway, and some was published just as these guidelines were being drawn, and this particular area is one that is likely to change significantly. While currently we recommend a repeated dose of IVIg, it is likely that over the very near term, the use of repeated IVIg in KD will be curtailed” because of concerns such as the relatively high rate of hemolysis. Research to identify which therapy has a noninferior effect with a superior risk profile is needed; such research “will likely result in a future iteration of these guidelines specifically related to this question,” he concluded.

The KD guideline is the final companion to three additional ACR/VF vasculitis guidelines that were released in July 2021. The guideline research received no outside funding. The researchers had no financial conflicts to disclose.

All Kawasaki disease (KD) patients should be treated first with intravenous immunoglobulin, according to an updated guideline issued jointly by the American College of Rheumatology and the Vasculitis Foundation.

KD has low mortality when treated appropriately, guideline first author Mark Gorelik, MD, assistant professor of pediatrics at Columbia University, New York, and colleagues wrote.

The update is important at this time because new evidence continues to emerge in the clinical management of KD, Dr. Gorelik said in an interview.

“In addition, this guideline approaches Kawasaki disease from a perspective of acting as an adjunct to the already existing and excellent American Heart Association guidelines by adding information in areas that rheumatologists may play a role,” Dr. Gorelik said. “This is specifically regarding patients who may require additional therapy beyond standard IVIg, such as patients who may be at higher risk of morbidity from disease and patients who have refractory disease,” he explained.

The guideline, published in Arthritis & Rheumatology, includes 11 recommendations, 1 good practice statement, and 1 ungraded position statement. The good practice statement emphasizes that all patients with KD should be initially treated with IVIg.

The position statement advises that either nonglucocorticoid immunosuppressive therapy or glucocorticoids may be used for patients with acute KD whose fever persists despite repeated IVIg treatment. No clinical evidence currently supports the superiority of either nonglucocorticoid immunosuppressive therapy or glucocorticoids; therefore, the authors support the use of either based on what is appropriate in any given clinical situation. Although optimal dosage and duration of glucocorticoids have yet to be determined in a U.S. population, the authors described a typical glucocorticoid dosage as starting prednisone at 2 mg/kg per day, with a maximum of 60 mg/day, and dose tapering over 15 days.

The 11 recommendations consist of 7 strong and 4 conditional recommendations. The strong recommendations focus on prompt treatment of incomplete KD, treatment with aspirin, and obtaining an echocardiogram in patients with unexplained macrophage activation syndrome or shock. The conditional recommendations support using established therapy promptly at disease onset, then identifying cases in which additional therapy is needed.

Dr. Gorelik highlighted four clinical takeaways from the guideline. First, “patients with higher risk for complications do exist in Kawasaki disease, and that these patients can be treated more aggressively,” he said. “Specifically, patients with aneurysms seen at first ultrasound, and patients who are under 6 months, are more likely to have progressive and/or refractory disease; these patients can be treated with an adjunctive short course of corticosteroids.”

Second, “the use of high-dose aspirin for patients with Kawasaki disease does not have strong basis in evidence. While aspirin itself of some dose is necessary for patients with Kawasaki disease, use of either high- or low-dose aspirin has the same outcome for patients, and a physician may choose either of these in practice,” he said.

Third, “we continue to recommend that refractory patients with Kawasaki disease be treated with a second dose of IVIg; however, there are many scenarios in which a physician may choose either corticosteroids [either a single high dose of >10 mg/kg, or a short moderate-dose course of 2 mg/kg per day for 5-7 days] or a biologic agent such as infliximab. ... These are valid choices for therapy in patients with refractory Kawasaki disease,” he emphasized.

Fourth, “physicians should discard the idea of treating before [and conversely, not treating after] 10 days of fever,” Dr. Gorelik said. “Patients with Kawasaki disease should be treated as soon as the diagnosis is made, regardless of whether this patient is on day 5, day 12, or day 20 of symptoms.”

Update incorporates emerging evidence

Potential barriers to implementing the guideline in practice include the challenge of weaning doctors from practices that are habitual in medicine, Dr. Gorelik said. “One of these is the use of high-dose aspirin for Kawasaki disease; a number of studies have shown over the past decade or more that high-dose aspirin has no greater effect than lower-dose aspirin for Kawasaki disease. Despite all of these studies, the use of high-dose aspirin continued. High-dose aspirin for Kawasaki disease was used in the era prior to use of IVIg as an anti-inflammatory agent. However, it has poor efficacy in this regard, and the true benefit for aspirin is for anticoagulation for patients at risk of a clot, and this is just as effective in lower doses. Expressing this in a guideline could help to change practices by helping physicians understand not only what they are guided to do, but why.”

Additional research is needed to better identify high-risk patients in non-Japanese populations, he noted. “While studies from Japan suggest that higher-risk patients can be identified based on various parameters, these have not been well replicated in non-Japanese populations. Good research that identifies which patients may be more at risk in other populations would be helpful to more precisely target high-risk therapy.”

Other research needs include a clearer understanding of the best therapies for refractory patients, Dr. Gorelik said. “One area of the most difficulty was determining whether patients with refractory disease should have repeated IVIg or a switch to glucocorticoids and biologic agents. Some of this research is underway, and some was published just as these guidelines were being drawn, and this particular area is one that is likely to change significantly. While currently we recommend a repeated dose of IVIg, it is likely that over the very near term, the use of repeated IVIg in KD will be curtailed” because of concerns such as the relatively high rate of hemolysis. Research to identify which therapy has a noninferior effect with a superior risk profile is needed; such research “will likely result in a future iteration of these guidelines specifically related to this question,” he concluded.

The KD guideline is the final companion to three additional ACR/VF vasculitis guidelines that were released in July 2021. The guideline research received no outside funding. The researchers had no financial conflicts to disclose.

All Kawasaki disease (KD) patients should be treated first with intravenous immunoglobulin, according to an updated guideline issued jointly by the American College of Rheumatology and the Vasculitis Foundation.

KD has low mortality when treated appropriately, guideline first author Mark Gorelik, MD, assistant professor of pediatrics at Columbia University, New York, and colleagues wrote.

The update is important at this time because new evidence continues to emerge in the clinical management of KD, Dr. Gorelik said in an interview.

“In addition, this guideline approaches Kawasaki disease from a perspective of acting as an adjunct to the already existing and excellent American Heart Association guidelines by adding information in areas that rheumatologists may play a role,” Dr. Gorelik said. “This is specifically regarding patients who may require additional therapy beyond standard IVIg, such as patients who may be at higher risk of morbidity from disease and patients who have refractory disease,” he explained.

The guideline, published in Arthritis & Rheumatology, includes 11 recommendations, 1 good practice statement, and 1 ungraded position statement. The good practice statement emphasizes that all patients with KD should be initially treated with IVIg.

The position statement advises that either nonglucocorticoid immunosuppressive therapy or glucocorticoids may be used for patients with acute KD whose fever persists despite repeated IVIg treatment. No clinical evidence currently supports the superiority of either nonglucocorticoid immunosuppressive therapy or glucocorticoids; therefore, the authors support the use of either based on what is appropriate in any given clinical situation. Although optimal dosage and duration of glucocorticoids have yet to be determined in a U.S. population, the authors described a typical glucocorticoid dosage as starting prednisone at 2 mg/kg per day, with a maximum of 60 mg/day, and dose tapering over 15 days.

The 11 recommendations consist of 7 strong and 4 conditional recommendations. The strong recommendations focus on prompt treatment of incomplete KD, treatment with aspirin, and obtaining an echocardiogram in patients with unexplained macrophage activation syndrome or shock. The conditional recommendations support using established therapy promptly at disease onset, then identifying cases in which additional therapy is needed.

Dr. Gorelik highlighted four clinical takeaways from the guideline. First, “patients with higher risk for complications do exist in Kawasaki disease, and that these patients can be treated more aggressively,” he said. “Specifically, patients with aneurysms seen at first ultrasound, and patients who are under 6 months, are more likely to have progressive and/or refractory disease; these patients can be treated with an adjunctive short course of corticosteroids.”

Second, “the use of high-dose aspirin for patients with Kawasaki disease does not have strong basis in evidence. While aspirin itself of some dose is necessary for patients with Kawasaki disease, use of either high- or low-dose aspirin has the same outcome for patients, and a physician may choose either of these in practice,” he said.

Third, “we continue to recommend that refractory patients with Kawasaki disease be treated with a second dose of IVIg; however, there are many scenarios in which a physician may choose either corticosteroids [either a single high dose of >10 mg/kg, or a short moderate-dose course of 2 mg/kg per day for 5-7 days] or a biologic agent such as infliximab. ... These are valid choices for therapy in patients with refractory Kawasaki disease,” he emphasized.

Fourth, “physicians should discard the idea of treating before [and conversely, not treating after] 10 days of fever,” Dr. Gorelik said. “Patients with Kawasaki disease should be treated as soon as the diagnosis is made, regardless of whether this patient is on day 5, day 12, or day 20 of symptoms.”

Update incorporates emerging evidence

Potential barriers to implementing the guideline in practice include the challenge of weaning doctors from practices that are habitual in medicine, Dr. Gorelik said. “One of these is the use of high-dose aspirin for Kawasaki disease; a number of studies have shown over the past decade or more that high-dose aspirin has no greater effect than lower-dose aspirin for Kawasaki disease. Despite all of these studies, the use of high-dose aspirin continued. High-dose aspirin for Kawasaki disease was used in the era prior to use of IVIg as an anti-inflammatory agent. However, it has poor efficacy in this regard, and the true benefit for aspirin is for anticoagulation for patients at risk of a clot, and this is just as effective in lower doses. Expressing this in a guideline could help to change practices by helping physicians understand not only what they are guided to do, but why.”

Additional research is needed to better identify high-risk patients in non-Japanese populations, he noted. “While studies from Japan suggest that higher-risk patients can be identified based on various parameters, these have not been well replicated in non-Japanese populations. Good research that identifies which patients may be more at risk in other populations would be helpful to more precisely target high-risk therapy.”

Other research needs include a clearer understanding of the best therapies for refractory patients, Dr. Gorelik said. “One area of the most difficulty was determining whether patients with refractory disease should have repeated IVIg or a switch to glucocorticoids and biologic agents. Some of this research is underway, and some was published just as these guidelines were being drawn, and this particular area is one that is likely to change significantly. While currently we recommend a repeated dose of IVIg, it is likely that over the very near term, the use of repeated IVIg in KD will be curtailed” because of concerns such as the relatively high rate of hemolysis. Research to identify which therapy has a noninferior effect with a superior risk profile is needed; such research “will likely result in a future iteration of these guidelines specifically related to this question,” he concluded.

The KD guideline is the final companion to three additional ACR/VF vasculitis guidelines that were released in July 2021. The guideline research received no outside funding. The researchers had no financial conflicts to disclose.

Almost all patients with both obstructive sleep apnea syndrome and severe asthma fell into the obesity phenotype, not the allergy phenotype, based on data from nearly 1,500 adults.

Both asthma and sleep-disordered breathing are common conditions worldwide, and previous research suggests that obstructive sleep apnea syndrome (OSAS) and severe asthma in particular could be associated, wrote Laurent Portel, MD, of Centre Hospitalier de Libourne, France, and colleagues.

“Even if the underlying mechanisms are not well established, it is clear that both OSAS and obesity act to aggravate existing asthma, making it more difficult to control,” they said. However, the pathology of this relationship is not well-understood, and data on severe asthma phenotypes and OSAS are limited, they said.

In a study published in Respiratory Medicine and Research, the investigators reviewed data from 1,465 patients older than 18 years with severe asthma who were part of a larger, prospective multicenter study of the management of asthma patients. The larger study, developed by the Collège des Pneumologues des Hôpitaux Généraux (CPHG) is known as the FASE-CPHG (France Asthme SEvère-CPHG) and includes 104 nonacademic hospitals in France.

Diagnosis of OSAS was reported by physicians; diagnosis of severe asthma was based on the Global Initiative for Asthma criteria. The average age of the patients was 54.4 years, 63% were women, and 60% were nonsmokers.

A total of 161 patients were diagnosed with OSAS. The researchers conducted a cluster analysis on 1,424 patients, including 156 of the OSAS patients. They identified five clusters: early-onset atopic asthma (690 patients), obese asthma (153 patients), late-onset asthma (299 patients), eosinophilic asthma (143 patients), and aspirin sensitivity asthma (139 patients).

All 153 patients in the obese asthma cluster had OSAS, by contrast, none of the patients in the early atopic asthma cluster had OSAS.

Overall, obesity, male sex, high blood pressure, depression, late-onset asthma, and early-onset atopic asthma were independently associated with OSAS, with odds ratios of 5.782, 3.047, 2.875, 2.552, 1.789, and 0.622, respectively.

Notably, OSAS patients were more frequently treated with long-term oral corticosteroids than those without OSAS (30% vs. 15%, P < .0001), the researchers said. “It is possible that this treatment may be responsible for obesity, and it represents a well-known risk factor for developing OSAS,” they wrote.

Uncontrolled asthma was significantly more common in OSAS patients than in those without OSAS (77.7% vs. 69%, P = .03), and significantly more OSAS patients reported no or occasional physical activity (79.8% vs. 68.2%, P ≤ .001).

The study findings were limited by several factors including the lack of patients from primary care or university hospitals, which may limit the generalizability of the results, the reliance on physician statements for diagnosis of OSAS, and the lack of data on OSAS severity or treatment, the researchers noted.

However, the results fill a needed gap in the literature because of the limited data on severe asthma patients in real life, and identifying severe asthma patients by phenotype may help identify those at greatest risk for OSAS, they said.

“Identified patients could more easily benefit from specific examinations such as poly(somno)graphy and, consequently, could benefit from a better management of both asthma and OSAS,” they emphasized.

The larger FASE-CPHG study was supported in part by ALK, AstraZeneca, Boehringer Ingelheim, GSK, and Le Nouveau Souffle. The researchers had no financial conflicts to disclose.

Almost all patients with both obstructive sleep apnea syndrome and severe asthma fell into the obesity phenotype, not the allergy phenotype, based on data from nearly 1,500 adults.

Both asthma and sleep-disordered breathing are common conditions worldwide, and previous research suggests that obstructive sleep apnea syndrome (OSAS) and severe asthma in particular could be associated, wrote Laurent Portel, MD, of Centre Hospitalier de Libourne, France, and colleagues.

“Even if the underlying mechanisms are not well established, it is clear that both OSAS and obesity act to aggravate existing asthma, making it more difficult to control,” they said. However, the pathology of this relationship is not well-understood, and data on severe asthma phenotypes and OSAS are limited, they said.

In a study published in Respiratory Medicine and Research, the investigators reviewed data from 1,465 patients older than 18 years with severe asthma who were part of a larger, prospective multicenter study of the management of asthma patients. The larger study, developed by the Collège des Pneumologues des Hôpitaux Généraux (CPHG) is known as the FASE-CPHG (France Asthme SEvère-CPHG) and includes 104 nonacademic hospitals in France.

Diagnosis of OSAS was reported by physicians; diagnosis of severe asthma was based on the Global Initiative for Asthma criteria. The average age of the patients was 54.4 years, 63% were women, and 60% were nonsmokers.

A total of 161 patients were diagnosed with OSAS. The researchers conducted a cluster analysis on 1,424 patients, including 156 of the OSAS patients. They identified five clusters: early-onset atopic asthma (690 patients), obese asthma (153 patients), late-onset asthma (299 patients), eosinophilic asthma (143 patients), and aspirin sensitivity asthma (139 patients).

All 153 patients in the obese asthma cluster had OSAS, by contrast, none of the patients in the early atopic asthma cluster had OSAS.

Overall, obesity, male sex, high blood pressure, depression, late-onset asthma, and early-onset atopic asthma were independently associated with OSAS, with odds ratios of 5.782, 3.047, 2.875, 2.552, 1.789, and 0.622, respectively.

Notably, OSAS patients were more frequently treated with long-term oral corticosteroids than those without OSAS (30% vs. 15%, P < .0001), the researchers said. “It is possible that this treatment may be responsible for obesity, and it represents a well-known risk factor for developing OSAS,” they wrote.

Uncontrolled asthma was significantly more common in OSAS patients than in those without OSAS (77.7% vs. 69%, P = .03), and significantly more OSAS patients reported no or occasional physical activity (79.8% vs. 68.2%, P ≤ .001).

The study findings were limited by several factors including the lack of patients from primary care or university hospitals, which may limit the generalizability of the results, the reliance on physician statements for diagnosis of OSAS, and the lack of data on OSAS severity or treatment, the researchers noted.

However, the results fill a needed gap in the literature because of the limited data on severe asthma patients in real life, and identifying severe asthma patients by phenotype may help identify those at greatest risk for OSAS, they said.

“Identified patients could more easily benefit from specific examinations such as poly(somno)graphy and, consequently, could benefit from a better management of both asthma and OSAS,” they emphasized.

The larger FASE-CPHG study was supported in part by ALK, AstraZeneca, Boehringer Ingelheim, GSK, and Le Nouveau Souffle. The researchers had no financial conflicts to disclose.

Almost all patients with both obstructive sleep apnea syndrome and severe asthma fell into the obesity phenotype, not the allergy phenotype, based on data from nearly 1,500 adults.

Both asthma and sleep-disordered breathing are common conditions worldwide, and previous research suggests that obstructive sleep apnea syndrome (OSAS) and severe asthma in particular could be associated, wrote Laurent Portel, MD, of Centre Hospitalier de Libourne, France, and colleagues.

“Even if the underlying mechanisms are not well established, it is clear that both OSAS and obesity act to aggravate existing asthma, making it more difficult to control,” they said. However, the pathology of this relationship is not well-understood, and data on severe asthma phenotypes and OSAS are limited, they said.

In a study published in Respiratory Medicine and Research, the investigators reviewed data from 1,465 patients older than 18 years with severe asthma who were part of a larger, prospective multicenter study of the management of asthma patients. The larger study, developed by the Collège des Pneumologues des Hôpitaux Généraux (CPHG) is known as the FASE-CPHG (France Asthme SEvère-CPHG) and includes 104 nonacademic hospitals in France.

Diagnosis of OSAS was reported by physicians; diagnosis of severe asthma was based on the Global Initiative for Asthma criteria. The average age of the patients was 54.4 years, 63% were women, and 60% were nonsmokers.

A total of 161 patients were diagnosed with OSAS. The researchers conducted a cluster analysis on 1,424 patients, including 156 of the OSAS patients. They identified five clusters: early-onset atopic asthma (690 patients), obese asthma (153 patients), late-onset asthma (299 patients), eosinophilic asthma (143 patients), and aspirin sensitivity asthma (139 patients).

All 153 patients in the obese asthma cluster had OSAS, by contrast, none of the patients in the early atopic asthma cluster had OSAS.

Overall, obesity, male sex, high blood pressure, depression, late-onset asthma, and early-onset atopic asthma were independently associated with OSAS, with odds ratios of 5.782, 3.047, 2.875, 2.552, 1.789, and 0.622, respectively.

Notably, OSAS patients were more frequently treated with long-term oral corticosteroids than those without OSAS (30% vs. 15%, P < .0001), the researchers said. “It is possible that this treatment may be responsible for obesity, and it represents a well-known risk factor for developing OSAS,” they wrote.

Uncontrolled asthma was significantly more common in OSAS patients than in those without OSAS (77.7% vs. 69%, P = .03), and significantly more OSAS patients reported no or occasional physical activity (79.8% vs. 68.2%, P ≤ .001).

The study findings were limited by several factors including the lack of patients from primary care or university hospitals, which may limit the generalizability of the results, the reliance on physician statements for diagnosis of OSAS, and the lack of data on OSAS severity or treatment, the researchers noted.

However, the results fill a needed gap in the literature because of the limited data on severe asthma patients in real life, and identifying severe asthma patients by phenotype may help identify those at greatest risk for OSAS, they said.

“Identified patients could more easily benefit from specific examinations such as poly(somno)graphy and, consequently, could benefit from a better management of both asthma and OSAS,” they emphasized.

The larger FASE-CPHG study was supported in part by ALK, AstraZeneca, Boehringer Ingelheim, GSK, and Le Nouveau Souffle. The researchers had no financial conflicts to disclose.

New studies show that chronic exposure to air pollution is associated with increased risk of autoimmune disease in adults and depression in adolescents.

Other analyses of data have found environmental air pollution from sources such as car exhaust and factory output can trigger an inflammatory response in the body. What’s new about a study published in RMD Open is that it explored an association between long-term exposure to pollution and risk of autoimmune diseases, wrote Giovanni Adami, MD, of the University of Verona (Italy) and colleagues.

“Environmental air pollution, according to the World Health Organization, is a major risk to health and 99% of the population worldwide is living in places where recommendations for air quality are not met,” said Dr. Adami in an interview. The limited data on the precise role of air pollution on rheumatic diseases in particular prompted the study, he said.

To explore the potential link between air pollution exposure and autoimmune disease, the researchers reviewed medical information from 81,363 adults via a national medical database in Italy; the data were submitted between June 2016 and November 2020.

The average age of the study population was 65 years, and 92% were women; 22% had at least one coexisting health condition. Each study participant was linked to local environmental monitoring via their residential postcode. 

The researchers obtained details about concentrations of particulate matter in the environment from the Italian Institute of Environmental Protection that included 617 monitoring stations in 110 Italian provinces. They focused on concentrations of 10 and 2.5 (PM10 and PM2.5).

Exposure thresholds of 30 mcg/m³ for PM10 and 20 mcg/m³ for PM2.5 are generally considered harmful to health, they noted. On average, the long-term exposure was 16 mcg/m³ for PM2.5 and 25 mcg/m³ for PM10 between 2013 and 2019.

Overall, 9,723 individuals (12%) were diagnosed with an autoimmune disease between 2016 and 2020.

Exposure to PM10 was associated with a 7% higher risk of diagnosis with any autoimmune disease for every 10 mcg/m³ increase in concentration, but no association appeared between PM2.5 exposure and increased risk of autoimmune diseases.

However, in an adjusted model, chronic exposure to PM10 above 30 mcg/m³ and to PM2.5 above 20 mcg/m³ were associated with a 12% and 13% higher risk, respectively, of any autoimmune disease. 

Chronic exposure to high levels of PM10 was specifically associated with a higher risk of rheumatoid arthritis, but no other autoimmune diseases. Chronic exposure to high levels of PM2.5 was associated with a higher risk of rheumatoid arthritis, connective tissue diseases, and inflammatory bowel diseases.

In their discussion, the researchers noted that the smaller diameter of PM2.5 molecules fluctuate less in response to rain and other weather, compared with PM10 molecules, which might make them a more accurate predictor of exposure to chronic air pollution.

The study findings were limited by several factors including the observational design, which prohibits the establishment of cause, and a lack of data on the start of symptoms and dates of diagnoses for autoimmune diseases, the researchers noted. Other limitations include the high percentage of older women in the study, which may limit generalizability, and the inability to account for additional personal exposure to pollutants outside of the environmental exposure, they said.

However, the results were strengthened by the large sample size and wide geographic distribution with variable pollution exposure, they said.

“Unfortunately, we were not surprised at all,” by the findings, Dr. Adami said in an interview.

“The biological rationale underpinning our findings is strong. Nevertheless, the magnitude of the effect was overwhelming. In addition, we saw an effect even at threshold of exposure that is widely considered as safe,” Dr. Adami noted.

Clinicians have been taught to consider cigarette smoking or other lifestyle behaviors as major risk factors for the development of several autoimmune diseases, said Dr. Adami. “In the future, we probably should include air pollution exposure as a risk factor as well. Interestingly, there is also accumulating evidence linking acute exposure to environmental air pollution with flares of chronic arthritis,” he said.

“Our study could have direct societal and political consequences,” and might help direct policy makers’ decisions on addressing strategies aimed to reduce fossil emissions, he said. As for additional research, “we certainly need multination studies to confirm our results on a larger scale,” Dr. Adami emphasized. “In addition, it is time to take action and start designing interventions aimed to reduce acute and chronic exposure to air pollution in patients suffering from RMDs.”

Consider the big picture of air quality

The Italian study is especially timely “given our evolving and emerging understanding of environmental risk factors for acute and chronic diseases, which we must first understand before we can address,” said Eileen Barrett, MD, of the University of New Mexico, Albuquerque, in an interview.

“I am largely surprised about the findings, as most physicians aren’t studying ambient air quality and risk for autoimmune disease,” said Dr. Barrett. “More often we think of air quality when we think of risk for respiratory diseases than autoimmune diseases, per se,” she said.

“There are several take-home messages from this study,” said Dr. Barrett. “The first is that we need more research to understand the consequences of air pollutants on health. Second, this study reminds us to think broadly about how air quality and our environment can affect health. And third, all clinicians should be committed to promoting science that can improve public health and reduce death and disability,” she emphasized.

The findings do not specifically reflect associations between pollution and other conditions such as chronic obstructive pulmonary disease and asthma although previous studies have shown an association between asthma and COPD exacerbations and air pollution, Dr. Barrett said.

“Further research will be needed to confirm the associations reported in this study,” Dr. Barrett said.

More research in other countries, including research related to other autoimmune diseases, and with other datasets on population and community level risks from poor air quality, would be helpful, and that information could be used to advise smart public policy, Dr. Barrett added.

Air pollution’s mental health impact

Air pollution’s effects extend beyond physical to the psychological, a new study of depression in teenagers showed. This study was published in Developmental Psychology.

Previous research on the environmental factors associated with depressive symptoms in teens has focused mainly on individual and family level contributors; the impact of the physical environment has not been well studied, the investigators, Erika M. Manczak, PhD, of the University of Denver and colleagues, wrote.

In their paper, the authors found a significant impact of neighborhood ozone exposure on the trajectory of depressive symptoms in teens over a 4-year period.

“Given that inhaling pollution activates biological pathways implicated in the development of depression, including immune, cardiovascular, and neurodevelopmental processes, exposure to ambient air pollution may influence the development and/or trajectory of depressive symptoms in youth,” they said.

The researchers recruited 213 adolescents in the San Francisco Bay area through local advertisements. The participants were aged 9-13 years at baseline, with an average age of 11 years. A total of 121 were female, 47% were white, 8.5% were African American, 12.3% were Asian, 10.4% were nonwhite Latin, and 21.7% were biracial or another ethnicity. The participants self-reported depressive symptoms and other psychopathology symptoms up to three times during the study period. Ozone exposure was calculated based on home addresses.

After controlling for other personal, family, and neighborhood variables, the researchers found that higher levels of ozone exposure were significantly associated with increased depressive symptoms over time, and the slope of trajectory of depressive symptoms became steeper as the ozone levels increased (P less than .001). Ozone did not significantly predict the trajectory of any other psychopathology symptoms.

“The results of this study provide preliminary support for the possibility that ozone is an overlooked contributor to the development or course of youth depressive symptoms,” the researchers wrote in their discussion.

“Interestingly, the association between ozone and symptom trajectories as measured by Anxious/Depressed subscale of the [Youth Self-Report] was not as strong as it was for the [Children’s Depression Inventory-Short Version] or Withdrawn/Depressed scales, suggesting that associations are more robust for behavioral withdrawal symptoms of depression than for other types of symptoms,” they noted.

The study findings were limited by the use of self-reports and by the inability of the study design to show causality, the researchers said. Other limitations include the use of average assessments of ozone that are less precise, lack of assessment of biological pathways for risk, lack of formal psychiatric diagnoses, and the small geographic region included in the study, they said.

However, the results provide preliminary evidence that ozone exposure is a potential contributing factor to depressive symptoms in youth, and serve as a jumping-off point for future research, they noted. Future studies should address changes in systemic inflammation, neurodevelopment, or stress reactivity, as well as concurrent psychosocial or biological factors, and temporal associations between air pollution and mental health symptoms, they concluded.

Environmental factors drive inflammatory responses

Peter L. Loper Jr., MD, considers the findings of the Developmental Psychology study to be unsurprising but important – because air pollution is simply getting worse.

“As the study authors cite, there is sufficient data correlating ozone to negative physical health outcomes in youth, but a paucity of data exploring the impact of poor air quality on mental health outcomes in this demographic,” noted Dr. Loper, of the University of South Carolina, Columbia, in an interview.

“As discussed by the study researchers, any environmental exposure that increases immune-mediated inflammation can result in negative health outcomes. In fact, there is already data to suggest that similar cytokines, or immune cell signalers, that get released by our immune system due to environmental exposures and that contribute to asthma, may also be implicated in depression and other mental health problems,” he noted.

“Just like downstream symptom indicators of physical illnesses such as asthma are secondary to immune-mediated pulmonary inflammation, downstream symptom indicators of mental illness, such as depression, are secondary to immune-mediated neuroinflammation,” Dr. Loper emphasized. “The most well-characterized upstream phenomenon perpetuating the downstream symptom indicators of depression involve neuroinflammatory states due to psychosocial and relational factors such as chronic stress, poor relationships, or substance use. However, any environmental factor that triggers an immune response and inflammation can promote neuroinflammation that manifests as symptoms of mental illness.”

The message for teens with depression and their families is that “we are a product of our environment,” Dr. Loper said. “When our environments are proinflammatory, or cause our immune system to become overactive, then we will develop illness; however, the most potent mediator of inflammation in the brain, and the downstream symptoms of depression, is our relationships with those we love most,” he said.

Dr. Loper suggested research aimed at identifying other sources of immune-mediated inflammation caused by physical environments and better understanding how environmental phenomenon like ozone may compound previously established risk factors for mental illness could be useful.

The RMD Open study received no outside funding, and its authors had no financial conflicts.

The Developmental Psychology study was supported by the National Institute of Mental Health and the Stanford University Precision Health and Integrated Diagnostics Center. The researchers for that report, and Dr. Loper and Dr. Barrett had no conflicts to disclose.

New studies show that chronic exposure to air pollution is associated with increased risk of autoimmune disease in adults and depression in adolescents.

Other analyses of data have found environmental air pollution from sources such as car exhaust and factory output can trigger an inflammatory response in the body. What’s new about a study published in RMD Open is that it explored an association between long-term exposure to pollution and risk of autoimmune diseases, wrote Giovanni Adami, MD, of the University of Verona (Italy) and colleagues.

“Environmental air pollution, according to the World Health Organization, is a major risk to health and 99% of the population worldwide is living in places where recommendations for air quality are not met,” said Dr. Adami in an interview. The limited data on the precise role of air pollution on rheumatic diseases in particular prompted the study, he said.

To explore the potential link between air pollution exposure and autoimmune disease, the researchers reviewed medical information from 81,363 adults via a national medical database in Italy; the data were submitted between June 2016 and November 2020.

The average age of the study population was 65 years, and 92% were women; 22% had at least one coexisting health condition. Each study participant was linked to local environmental monitoring via their residential postcode. 

The researchers obtained details about concentrations of particulate matter in the environment from the Italian Institute of Environmental Protection that included 617 monitoring stations in 110 Italian provinces. They focused on concentrations of 10 and 2.5 (PM10 and PM2.5).

Exposure thresholds of 30 mcg/m³ for PM10 and 20 mcg/m³ for PM2.5 are generally considered harmful to health, they noted. On average, the long-term exposure was 16 mcg/m³ for PM2.5 and 25 mcg/m³ for PM10 between 2013 and 2019.

Overall, 9,723 individuals (12%) were diagnosed with an autoimmune disease between 2016 and 2020.

Exposure to PM10 was associated with a 7% higher risk of diagnosis with any autoimmune disease for every 10 mcg/m³ increase in concentration, but no association appeared between PM2.5 exposure and increased risk of autoimmune diseases.

However, in an adjusted model, chronic exposure to PM10 above 30 mcg/m³ and to PM2.5 above 20 mcg/m³ were associated with a 12% and 13% higher risk, respectively, of any autoimmune disease. 

Chronic exposure to high levels of PM10 was specifically associated with a higher risk of rheumatoid arthritis, but no other autoimmune diseases. Chronic exposure to high levels of PM2.5 was associated with a higher risk of rheumatoid arthritis, connective tissue diseases, and inflammatory bowel diseases.

In their discussion, the researchers noted that the smaller diameter of PM2.5 molecules fluctuate less in response to rain and other weather, compared with PM10 molecules, which might make them a more accurate predictor of exposure to chronic air pollution.

The study findings were limited by several factors including the observational design, which prohibits the establishment of cause, and a lack of data on the start of symptoms and dates of diagnoses for autoimmune diseases, the researchers noted. Other limitations include the high percentage of older women in the study, which may limit generalizability, and the inability to account for additional personal exposure to pollutants outside of the environmental exposure, they said.

However, the results were strengthened by the large sample size and wide geographic distribution with variable pollution exposure, they said.

“Unfortunately, we were not surprised at all,” by the findings, Dr. Adami said in an interview.

“The biological rationale underpinning our findings is strong. Nevertheless, the magnitude of the effect was overwhelming. In addition, we saw an effect even at threshold of exposure that is widely considered as safe,” Dr. Adami noted.

Clinicians have been taught to consider cigarette smoking or other lifestyle behaviors as major risk factors for the development of several autoimmune diseases, said Dr. Adami. “In the future, we probably should include air pollution exposure as a risk factor as well. Interestingly, there is also accumulating evidence linking acute exposure to environmental air pollution with flares of chronic arthritis,” he said.

“Our study could have direct societal and political consequences,” and might help direct policy makers’ decisions on addressing strategies aimed to reduce fossil emissions, he said. As for additional research, “we certainly need multination studies to confirm our results on a larger scale,” Dr. Adami emphasized. “In addition, it is time to take action and start designing interventions aimed to reduce acute and chronic exposure to air pollution in patients suffering from RMDs.”

Consider the big picture of air quality

The Italian study is especially timely “given our evolving and emerging understanding of environmental risk factors for acute and chronic diseases, which we must first understand before we can address,” said Eileen Barrett, MD, of the University of New Mexico, Albuquerque, in an interview.

“I am largely surprised about the findings, as most physicians aren’t studying ambient air quality and risk for autoimmune disease,” said Dr. Barrett. “More often we think of air quality when we think of risk for respiratory diseases than autoimmune diseases, per se,” she said.

“There are several take-home messages from this study,” said Dr. Barrett. “The first is that we need more research to understand the consequences of air pollutants on health. Second, this study reminds us to think broadly about how air quality and our environment can affect health. And third, all clinicians should be committed to promoting science that can improve public health and reduce death and disability,” she emphasized.

The findings do not specifically reflect associations between pollution and other conditions such as chronic obstructive pulmonary disease and asthma although previous studies have shown an association between asthma and COPD exacerbations and air pollution, Dr. Barrett said.

“Further research will be needed to confirm the associations reported in this study,” Dr. Barrett said.

More research in other countries, including research related to other autoimmune diseases, and with other datasets on population and community level risks from poor air quality, would be helpful, and that information could be used to advise smart public policy, Dr. Barrett added.

Air pollution’s mental health impact

Air pollution’s effects extend beyond physical to the psychological, a new study of depression in teenagers showed. This study was published in Developmental Psychology.

Previous research on the environmental factors associated with depressive symptoms in teens has focused mainly on individual and family level contributors; the impact of the physical environment has not been well studied, the investigators, Erika M. Manczak, PhD, of the University of Denver and colleagues, wrote.

In their paper, the authors found a significant impact of neighborhood ozone exposure on the trajectory of depressive symptoms in teens over a 4-year period.

“Given that inhaling pollution activates biological pathways implicated in the development of depression, including immune, cardiovascular, and neurodevelopmental processes, exposure to ambient air pollution may influence the development and/or trajectory of depressive symptoms in youth,” they said.

The researchers recruited 213 adolescents in the San Francisco Bay area through local advertisements. The participants were aged 9-13 years at baseline, with an average age of 11 years. A total of 121 were female, 47% were white, 8.5% were African American, 12.3% were Asian, 10.4% were nonwhite Latin, and 21.7% were biracial or another ethnicity. The participants self-reported depressive symptoms and other psychopathology symptoms up to three times during the study period. Ozone exposure was calculated based on home addresses.

After controlling for other personal, family, and neighborhood variables, the researchers found that higher levels of ozone exposure were significantly associated with increased depressive symptoms over time, and the slope of trajectory of depressive symptoms became steeper as the ozone levels increased (P less than .001). Ozone did not significantly predict the trajectory of any other psychopathology symptoms.

“The results of this study provide preliminary support for the possibility that ozone is an overlooked contributor to the development or course of youth depressive symptoms,” the researchers wrote in their discussion.

“Interestingly, the association between ozone and symptom trajectories as measured by Anxious/Depressed subscale of the [Youth Self-Report] was not as strong as it was for the [Children’s Depression Inventory-Short Version] or Withdrawn/Depressed scales, suggesting that associations are more robust for behavioral withdrawal symptoms of depression than for other types of symptoms,” they noted.

The study findings were limited by the use of self-reports and by the inability of the study design to show causality, the researchers said. Other limitations include the use of average assessments of ozone that are less precise, lack of assessment of biological pathways for risk, lack of formal psychiatric diagnoses, and the small geographic region included in the study, they said.

However, the results provide preliminary evidence that ozone exposure is a potential contributing factor to depressive symptoms in youth, and serve as a jumping-off point for future research, they noted. Future studies should address changes in systemic inflammation, neurodevelopment, or stress reactivity, as well as concurrent psychosocial or biological factors, and temporal associations between air pollution and mental health symptoms, they concluded.

Environmental factors drive inflammatory responses

Peter L. Loper Jr., MD, considers the findings of the Developmental Psychology study to be unsurprising but important – because air pollution is simply getting worse.

“As the study authors cite, there is sufficient data correlating ozone to negative physical health outcomes in youth, but a paucity of data exploring the impact of poor air quality on mental health outcomes in this demographic,” noted Dr. Loper, of the University of South Carolina, Columbia, in an interview.

“As discussed by the study researchers, any environmental exposure that increases immune-mediated inflammation can result in negative health outcomes. In fact, there is already data to suggest that similar cytokines, or immune cell signalers, that get released by our immune system due to environmental exposures and that contribute to asthma, may also be implicated in depression and other mental health problems,” he noted.

“Just like downstream symptom indicators of physical illnesses such as asthma are secondary to immune-mediated pulmonary inflammation, downstream symptom indicators of mental illness, such as depression, are secondary to immune-mediated neuroinflammation,” Dr. Loper emphasized. “The most well-characterized upstream phenomenon perpetuating the downstream symptom indicators of depression involve neuroinflammatory states due to psychosocial and relational factors such as chronic stress, poor relationships, or substance use. However, any environmental factor that triggers an immune response and inflammation can promote neuroinflammation that manifests as symptoms of mental illness.”

The message for teens with depression and their families is that “we are a product of our environment,” Dr. Loper said. “When our environments are proinflammatory, or cause our immune system to become overactive, then we will develop illness; however, the most potent mediator of inflammation in the brain, and the downstream symptoms of depression, is our relationships with those we love most,” he said.

Dr. Loper suggested research aimed at identifying other sources of immune-mediated inflammation caused by physical environments and better understanding how environmental phenomenon like ozone may compound previously established risk factors for mental illness could be useful.

The RMD Open study received no outside funding, and its authors had no financial conflicts.

The Developmental Psychology study was supported by the National Institute of Mental Health and the Stanford University Precision Health and Integrated Diagnostics Center. The researchers for that report, and Dr. Loper and Dr. Barrett had no conflicts to disclose.

New studies show that chronic exposure to air pollution is associated with increased risk of autoimmune disease in adults and depression in adolescents.

Other analyses of data have found environmental air pollution from sources such as car exhaust and factory output can trigger an inflammatory response in the body. What’s new about a study published in RMD Open is that it explored an association between long-term exposure to pollution and risk of autoimmune diseases, wrote Giovanni Adami, MD, of the University of Verona (Italy) and colleagues.

“Environmental air pollution, according to the World Health Organization, is a major risk to health and 99% of the population worldwide is living in places where recommendations for air quality are not met,” said Dr. Adami in an interview. The limited data on the precise role of air pollution on rheumatic diseases in particular prompted the study, he said.

To explore the potential link between air pollution exposure and autoimmune disease, the researchers reviewed medical information from 81,363 adults via a national medical database in Italy; the data were submitted between June 2016 and November 2020.

The average age of the study population was 65 years, and 92% were women; 22% had at least one coexisting health condition. Each study participant was linked to local environmental monitoring via their residential postcode. 

The researchers obtained details about concentrations of particulate matter in the environment from the Italian Institute of Environmental Protection that included 617 monitoring stations in 110 Italian provinces. They focused on concentrations of 10 and 2.5 (PM10 and PM2.5).

Exposure thresholds of 30 mcg/m³ for PM10 and 20 mcg/m³ for PM2.5 are generally considered harmful to health, they noted. On average, the long-term exposure was 16 mcg/m³ for PM2.5 and 25 mcg/m³ for PM10 between 2013 and 2019.

Overall, 9,723 individuals (12%) were diagnosed with an autoimmune disease between 2016 and 2020.

Exposure to PM10 was associated with a 7% higher risk of diagnosis with any autoimmune disease for every 10 mcg/m³ increase in concentration, but no association appeared between PM2.5 exposure and increased risk of autoimmune diseases.

However, in an adjusted model, chronic exposure to PM10 above 30 mcg/m³ and to PM2.5 above 20 mcg/m³ were associated with a 12% and 13% higher risk, respectively, of any autoimmune disease. 

Chronic exposure to high levels of PM10 was specifically associated with a higher risk of rheumatoid arthritis, but no other autoimmune diseases. Chronic exposure to high levels of PM2.5 was associated with a higher risk of rheumatoid arthritis, connective tissue diseases, and inflammatory bowel diseases.

In their discussion, the researchers noted that the smaller diameter of PM2.5 molecules fluctuate less in response to rain and other weather, compared with PM10 molecules, which might make them a more accurate predictor of exposure to chronic air pollution.

The study findings were limited by several factors including the observational design, which prohibits the establishment of cause, and a lack of data on the start of symptoms and dates of diagnoses for autoimmune diseases, the researchers noted. Other limitations include the high percentage of older women in the study, which may limit generalizability, and the inability to account for additional personal exposure to pollutants outside of the environmental exposure, they said.

However, the results were strengthened by the large sample size and wide geographic distribution with variable pollution exposure, they said.

“Unfortunately, we were not surprised at all,” by the findings, Dr. Adami said in an interview.

“The biological rationale underpinning our findings is strong. Nevertheless, the magnitude of the effect was overwhelming. In addition, we saw an effect even at threshold of exposure that is widely considered as safe,” Dr. Adami noted.

Clinicians have been taught to consider cigarette smoking or other lifestyle behaviors as major risk factors for the development of several autoimmune diseases, said Dr. Adami. “In the future, we probably should include air pollution exposure as a risk factor as well. Interestingly, there is also accumulating evidence linking acute exposure to environmental air pollution with flares of chronic arthritis,” he said.

“Our study could have direct societal and political consequences,” and might help direct policy makers’ decisions on addressing strategies aimed to reduce fossil emissions, he said. As for additional research, “we certainly need multination studies to confirm our results on a larger scale,” Dr. Adami emphasized. “In addition, it is time to take action and start designing interventions aimed to reduce acute and chronic exposure to air pollution in patients suffering from RMDs.”

Consider the big picture of air quality

The Italian study is especially timely “given our evolving and emerging understanding of environmental risk factors for acute and chronic diseases, which we must first understand before we can address,” said Eileen Barrett, MD, of the University of New Mexico, Albuquerque, in an interview.

“I am largely surprised about the findings, as most physicians aren’t studying ambient air quality and risk for autoimmune disease,” said Dr. Barrett. “More often we think of air quality when we think of risk for respiratory diseases than autoimmune diseases, per se,” she said.

“There are several take-home messages from this study,” said Dr. Barrett. “The first is that we need more research to understand the consequences of air pollutants on health. Second, this study reminds us to think broadly about how air quality and our environment can affect health. And third, all clinicians should be committed to promoting science that can improve public health and reduce death and disability,” she emphasized.

The findings do not specifically reflect associations between pollution and other conditions such as chronic obstructive pulmonary disease and asthma although previous studies have shown an association between asthma and COPD exacerbations and air pollution, Dr. Barrett said.

“Further research will be needed to confirm the associations reported in this study,” Dr. Barrett said.

More research in other countries, including research related to other autoimmune diseases, and with other datasets on population and community level risks from poor air quality, would be helpful, and that information could be used to advise smart public policy, Dr. Barrett added.

Air pollution’s mental health impact

Air pollution’s effects extend beyond physical to the psychological, a new study of depression in teenagers showed. This study was published in Developmental Psychology.

Previous research on the environmental factors associated with depressive symptoms in teens has focused mainly on individual and family level contributors; the impact of the physical environment has not been well studied, the investigators, Erika M. Manczak, PhD, of the University of Denver and colleagues, wrote.

In their paper, the authors found a significant impact of neighborhood ozone exposure on the trajectory of depressive symptoms in teens over a 4-year period.

“Given that inhaling pollution activates biological pathways implicated in the development of depression, including immune, cardiovascular, and neurodevelopmental processes, exposure to ambient air pollution may influence the development and/or trajectory of depressive symptoms in youth,” they said.

The researchers recruited 213 adolescents in the San Francisco Bay area through local advertisements. The participants were aged 9-13 years at baseline, with an average age of 11 years. A total of 121 were female, 47% were white, 8.5% were African American, 12.3% were Asian, 10.4% were nonwhite Latin, and 21.7% were biracial or another ethnicity. The participants self-reported depressive symptoms and other psychopathology symptoms up to three times during the study period. Ozone exposure was calculated based on home addresses.

After controlling for other personal, family, and neighborhood variables, the researchers found that higher levels of ozone exposure were significantly associated with increased depressive symptoms over time, and the slope of trajectory of depressive symptoms became steeper as the ozone levels increased (P less than .001). Ozone did not significantly predict the trajectory of any other psychopathology symptoms.

“The results of this study provide preliminary support for the possibility that ozone is an overlooked contributor to the development or course of youth depressive symptoms,” the researchers wrote in their discussion.

“Interestingly, the association between ozone and symptom trajectories as measured by Anxious/Depressed subscale of the [Youth Self-Report] was not as strong as it was for the [Children’s Depression Inventory-Short Version] or Withdrawn/Depressed scales, suggesting that associations are more robust for behavioral withdrawal symptoms of depression than for other types of symptoms,” they noted.

The study findings were limited by the use of self-reports and by the inability of the study design to show causality, the researchers said. Other limitations include the use of average assessments of ozone that are less precise, lack of assessment of biological pathways for risk, lack of formal psychiatric diagnoses, and the small geographic region included in the study, they said.

However, the results provide preliminary evidence that ozone exposure is a potential contributing factor to depressive symptoms in youth, and serve as a jumping-off point for future research, they noted. Future studies should address changes in systemic inflammation, neurodevelopment, or stress reactivity, as well as concurrent psychosocial or biological factors, and temporal associations between air pollution and mental health symptoms, they concluded.

Environmental factors drive inflammatory responses

Peter L. Loper Jr., MD, considers the findings of the Developmental Psychology study to be unsurprising but important – because air pollution is simply getting worse.

“As the study authors cite, there is sufficient data correlating ozone to negative physical health outcomes in youth, but a paucity of data exploring the impact of poor air quality on mental health outcomes in this demographic,” noted Dr. Loper, of the University of South Carolina, Columbia, in an interview.

“As discussed by the study researchers, any environmental exposure that increases immune-mediated inflammation can result in negative health outcomes. In fact, there is already data to suggest that similar cytokines, or immune cell signalers, that get released by our immune system due to environmental exposures and that contribute to asthma, may also be implicated in depression and other mental health problems,” he noted.

“Just like downstream symptom indicators of physical illnesses such as asthma are secondary to immune-mediated pulmonary inflammation, downstream symptom indicators of mental illness, such as depression, are secondary to immune-mediated neuroinflammation,” Dr. Loper emphasized. “The most well-characterized upstream phenomenon perpetuating the downstream symptom indicators of depression involve neuroinflammatory states due to psychosocial and relational factors such as chronic stress, poor relationships, or substance use. However, any environmental factor that triggers an immune response and inflammation can promote neuroinflammation that manifests as symptoms of mental illness.”

The message for teens with depression and their families is that “we are a product of our environment,” Dr. Loper said. “When our environments are proinflammatory, or cause our immune system to become overactive, then we will develop illness; however, the most potent mediator of inflammation in the brain, and the downstream symptoms of depression, is our relationships with those we love most,” he said.

Dr. Loper suggested research aimed at identifying other sources of immune-mediated inflammation caused by physical environments and better understanding how environmental phenomenon like ozone may compound previously established risk factors for mental illness could be useful.

The RMD Open study received no outside funding, and its authors had no financial conflicts.

The Developmental Psychology study was supported by the National Institute of Mental Health and the Stanford University Precision Health and Integrated Diagnostics Center. The researchers for that report, and Dr. Loper and Dr. Barrett had no conflicts to disclose.

The use of preimplantation genetic tests (PGT) in in vitro fertilization cycles, including tests for nonmedical sex selection, increased significantly in states without mandated insurance coverage, based on data from a study of 300,000 IVF cycles.

Previous studies have shown associations between IVF insurance coverage and various IVF practice patterns, but trends in genetic testing according to state-mandated insurance have not been explored, Bronwyn S. Bedrick, MD, of Johns Hopkins University, Baltimore, and colleagues wrote.

“Preimplantation genetic testing was introduced into clinical practice to prevent transmission of genetic disease and to improve uptake of single embryo transfer, but in the real world there are many potential applications,” corresponding author Emily Jungheim, MD, of Northwestern University, Chicago, said in an interview. “We wanted to know how PGT is being applied given that its use is on the rise.”

In a study published in Obstetrics & Gynecology, the researchers analyzed genetic testing in deidentified autologous, nonbanking IVF cycles from 2014 to 2016 obtained through the Society for Assisted Reproductive Technology Clinic Outcome Reporting System (SART CORS). The data set included 301,465 IVF cycles and 224,235 unique patients over the 3-year study period. Of these, 78,578 cycles (26%) used PGT, and overall, the proportion of IVF cycles using PGT approximately doubled, from 17% in 2014 to 34% in 2016 – a significant increase over time (risk ratio, 1.37). As of 2021, 13 states had mandates that health insurance include IVF costs.

In states with insurance mandates versus nonmandated states, the proportion of any PGT was 28.8% vs. 19.6%, and the probability was 32% lower in states with mandates (RR. 0.68; P < .001).

Aneuploidy was the most common indication for PGT, and accounted for 60% of the cycles; however, the number of cycles using PGT for elective sex selection increased from 1,314 cycles in 2014 to 2,184 in 2016 (approximately 66% increase).

In a multivariate analysis, IVF cycles for elective sex selection was 56% lower in states with mandates, compared with those without (RR, 0.44; P < .001).

In addition, cycles involving nonmedical sex selection were significantly more likely to result in male offspring, the researchers said.

“The increase in the number of cycles using elective sex selection seen in this study may reflect the growing number of clinics offering [PGT] for nonmedical sex selection as well as increasing public awareness of preimplantation genetic testing,” the researchers wrote.

However, the socioeconomic characteristics of women may play a role in the use of PGT, as those living in states with no mandate must be able pay the cost of IVF procedures, as well as the cost of PGT if desired, they noted.

“Because fertility centers may offer patients the choice to select the sex of their embryo after preimplantation genetic testing, this may in effect permit elective sex selection,” the researchers said. The shift in the male-female sex ratio in these cases “is concerning given the implications for future social demographics as IVF and preimplantation genetic testing utilization increase, and the negative effect outcomes could have on medical insurance policy and allocation of resources for medically indicated IVF and preimplantation genetic testing.”

The study findings were limited by several factors including the lack of clinic identifiers and lack of data characteristics including, race, ethnicity, and previous live births, the researchers noted. Other limitations included a lack of data on the sex preferences of the couple, and whether the sex of the embryo was known, and whether male and female embryos were transferred. Also, no states have mandates to cover PGT, and the limited study period may not generalize to current practices.

However, the study strengths include the large size and comprehensive database, and have implications for future policies and expansion of insurance coverage for infertility treatment and for preventing transmission of genetic diseases, they said.
 

Be mindful of consequences of testing

In an interview, Dr. Jungheim said she was surprised by some of the findings. “I thought we would see that PGT-A utilization was lower in states without mandates given the already high cost of IVF for patients paying out of pocket. I was also surprised to see that more males were born after PGT-A; it suggests that overall, patients using PGT-A favor males.

“For clinicians, we need to be mindful of the long-term impact of our practices,” she emphasized. “Shifting the sex ratio in favor of one sex or the other is an unintended consequence of IVF with PGT-A that can have negative implications for future generations.”

In the study, the researchers proposed a revision to the American Society for Reproductive Medicine Ethics Committee opinion on sex selection to provide guidance in keeping with ASRM’s mission of “accessible, ethical, and quality reproductive care for every person.”

However, “even if the ASRM Ethics Committee Opinion was revised, it’s up to clinicians to decide what they are comfortable with,” said Dr. Jungheim. “When patients are paying out of pocket for expensive treatments that require emotional investment and time, it can be difficult to keep medical decision making strictly evidence based.” Improved insurance coverage and access to fertility care may help with some of these decisions, but more real-world evidence is needed. 
 

Let’s talk about sex (selection)

The study findings are both “novel and sobering,” and enhance the current body of evidence of associations between state insurance mandates and IVF outcomes, Jennifer Eaton, MD, of Brown University, Providence, R.I., wrote in an accompanying editorial.

“The association between mandate status and elective sex selection is particularly eye-opening,” said Dr. Eaton. The overall increased use of PGT for sex selection does not account for sex selection as part of testing for aneuploidy. In fact, “patients with euploid embryos of both sexes are frequently given the opportunity to select which embryo to transfer.”

The current study provides “compelling evidence that it is time to revisit the ethical dilemma of elective sex selection in the United States,” Dr. Eaton emphasized. The current ASRM guidance states that IVF clinics are not obligated to provide or refuse to provide nonmedically indicated methods of sex selection, but in light of the current study and other studies, a revision to the existing ASRM Ethics Committee opinion is needed.

The study received no outside funding. Neither the researchers nor Dr. Eaton had any financial conflicts to disclose.

The use of preimplantation genetic tests (PGT) in in vitro fertilization cycles, including tests for nonmedical sex selection, increased significantly in states without mandated insurance coverage, based on data from a study of 300,000 IVF cycles.

Previous studies have shown associations between IVF insurance coverage and various IVF practice patterns, but trends in genetic testing according to state-mandated insurance have not been explored, Bronwyn S. Bedrick, MD, of Johns Hopkins University, Baltimore, and colleagues wrote.

“Preimplantation genetic testing was introduced into clinical practice to prevent transmission of genetic disease and to improve uptake of single embryo transfer, but in the real world there are many potential applications,” corresponding author Emily Jungheim, MD, of Northwestern University, Chicago, said in an interview. “We wanted to know how PGT is being applied given that its use is on the rise.”

In a study published in Obstetrics & Gynecology, the researchers analyzed genetic testing in deidentified autologous, nonbanking IVF cycles from 2014 to 2016 obtained through the Society for Assisted Reproductive Technology Clinic Outcome Reporting System (SART CORS). The data set included 301,465 IVF cycles and 224,235 unique patients over the 3-year study period. Of these, 78,578 cycles (26%) used PGT, and overall, the proportion of IVF cycles using PGT approximately doubled, from 17% in 2014 to 34% in 2016 – a significant increase over time (risk ratio, 1.37). As of 2021, 13 states had mandates that health insurance include IVF costs.

In states with insurance mandates versus nonmandated states, the proportion of any PGT was 28.8% vs. 19.6%, and the probability was 32% lower in states with mandates (RR. 0.68; P < .001).

Aneuploidy was the most common indication for PGT, and accounted for 60% of the cycles; however, the number of cycles using PGT for elective sex selection increased from 1,314 cycles in 2014 to 2,184 in 2016 (approximately 66% increase).

In a multivariate analysis, IVF cycles for elective sex selection was 56% lower in states with mandates, compared with those without (RR, 0.44; P < .001).

In addition, cycles involving nonmedical sex selection were significantly more likely to result in male offspring, the researchers said.

“The increase in the number of cycles using elective sex selection seen in this study may reflect the growing number of clinics offering [PGT] for nonmedical sex selection as well as increasing public awareness of preimplantation genetic testing,” the researchers wrote.

However, the socioeconomic characteristics of women may play a role in the use of PGT, as those living in states with no mandate must be able pay the cost of IVF procedures, as well as the cost of PGT if desired, they noted.

“Because fertility centers may offer patients the choice to select the sex of their embryo after preimplantation genetic testing, this may in effect permit elective sex selection,” the researchers said. The shift in the male-female sex ratio in these cases “is concerning given the implications for future social demographics as IVF and preimplantation genetic testing utilization increase, and the negative effect outcomes could have on medical insurance policy and allocation of resources for medically indicated IVF and preimplantation genetic testing.”

The study findings were limited by several factors including the lack of clinic identifiers and lack of data characteristics including, race, ethnicity, and previous live births, the researchers noted. Other limitations included a lack of data on the sex preferences of the couple, and whether the sex of the embryo was known, and whether male and female embryos were transferred. Also, no states have mandates to cover PGT, and the limited study period may not generalize to current practices.

However, the study strengths include the large size and comprehensive database, and have implications for future policies and expansion of insurance coverage for infertility treatment and for preventing transmission of genetic diseases, they said.
 

Be mindful of consequences of testing

In an interview, Dr. Jungheim said she was surprised by some of the findings. “I thought we would see that PGT-A utilization was lower in states without mandates given the already high cost of IVF for patients paying out of pocket. I was also surprised to see that more males were born after PGT-A; it suggests that overall, patients using PGT-A favor males.

“For clinicians, we need to be mindful of the long-term impact of our practices,” she emphasized. “Shifting the sex ratio in favor of one sex or the other is an unintended consequence of IVF with PGT-A that can have negative implications for future generations.”

In the study, the researchers proposed a revision to the American Society for Reproductive Medicine Ethics Committee opinion on sex selection to provide guidance in keeping with ASRM’s mission of “accessible, ethical, and quality reproductive care for every person.”

However, “even if the ASRM Ethics Committee Opinion was revised, it’s up to clinicians to decide what they are comfortable with,” said Dr. Jungheim. “When patients are paying out of pocket for expensive treatments that require emotional investment and time, it can be difficult to keep medical decision making strictly evidence based.” Improved insurance coverage and access to fertility care may help with some of these decisions, but more real-world evidence is needed. 
 

Let’s talk about sex (selection)

The study findings are both “novel and sobering,” and enhance the current body of evidence of associations between state insurance mandates and IVF outcomes, Jennifer Eaton, MD, of Brown University, Providence, R.I., wrote in an accompanying editorial.

“The association between mandate status and elective sex selection is particularly eye-opening,” said Dr. Eaton. The overall increased use of PGT for sex selection does not account for sex selection as part of testing for aneuploidy. In fact, “patients with euploid embryos of both sexes are frequently given the opportunity to select which embryo to transfer.”

The current study provides “compelling evidence that it is time to revisit the ethical dilemma of elective sex selection in the United States,” Dr. Eaton emphasized. The current ASRM guidance states that IVF clinics are not obligated to provide or refuse to provide nonmedically indicated methods of sex selection, but in light of the current study and other studies, a revision to the existing ASRM Ethics Committee opinion is needed.

The study received no outside funding. Neither the researchers nor Dr. Eaton had any financial conflicts to disclose.

The use of preimplantation genetic tests (PGT) in in vitro fertilization cycles, including tests for nonmedical sex selection, increased significantly in states without mandated insurance coverage, based on data from a study of 300,000 IVF cycles.

Previous studies have shown associations between IVF insurance coverage and various IVF practice patterns, but trends in genetic testing according to state-mandated insurance have not been explored, Bronwyn S. Bedrick, MD, of Johns Hopkins University, Baltimore, and colleagues wrote.

“Preimplantation genetic testing was introduced into clinical practice to prevent transmission of genetic disease and to improve uptake of single embryo transfer, but in the real world there are many potential applications,” corresponding author Emily Jungheim, MD, of Northwestern University, Chicago, said in an interview. “We wanted to know how PGT is being applied given that its use is on the rise.”

In a study published in Obstetrics & Gynecology, the researchers analyzed genetic testing in deidentified autologous, nonbanking IVF cycles from 2014 to 2016 obtained through the Society for Assisted Reproductive Technology Clinic Outcome Reporting System (SART CORS). The data set included 301,465 IVF cycles and 224,235 unique patients over the 3-year study period. Of these, 78,578 cycles (26%) used PGT, and overall, the proportion of IVF cycles using PGT approximately doubled, from 17% in 2014 to 34% in 2016 – a significant increase over time (risk ratio, 1.37). As of 2021, 13 states had mandates that health insurance include IVF costs.

In states with insurance mandates versus nonmandated states, the proportion of any PGT was 28.8% vs. 19.6%, and the probability was 32% lower in states with mandates (RR. 0.68; P < .001).

Aneuploidy was the most common indication for PGT, and accounted for 60% of the cycles; however, the number of cycles using PGT for elective sex selection increased from 1,314 cycles in 2014 to 2,184 in 2016 (approximately 66% increase).

In a multivariate analysis, IVF cycles for elective sex selection was 56% lower in states with mandates, compared with those without (RR, 0.44; P < .001).

In addition, cycles involving nonmedical sex selection were significantly more likely to result in male offspring, the researchers said.

“The increase in the number of cycles using elective sex selection seen in this study may reflect the growing number of clinics offering [PGT] for nonmedical sex selection as well as increasing public awareness of preimplantation genetic testing,” the researchers wrote.

However, the socioeconomic characteristics of women may play a role in the use of PGT, as those living in states with no mandate must be able pay the cost of IVF procedures, as well as the cost of PGT if desired, they noted.

“Because fertility centers may offer patients the choice to select the sex of their embryo after preimplantation genetic testing, this may in effect permit elective sex selection,” the researchers said. The shift in the male-female sex ratio in these cases “is concerning given the implications for future social demographics as IVF and preimplantation genetic testing utilization increase, and the negative effect outcomes could have on medical insurance policy and allocation of resources for medically indicated IVF and preimplantation genetic testing.”

The study findings were limited by several factors including the lack of clinic identifiers and lack of data characteristics including, race, ethnicity, and previous live births, the researchers noted. Other limitations included a lack of data on the sex preferences of the couple, and whether the sex of the embryo was known, and whether male and female embryos were transferred. Also, no states have mandates to cover PGT, and the limited study period may not generalize to current practices.

However, the study strengths include the large size and comprehensive database, and have implications for future policies and expansion of insurance coverage for infertility treatment and for preventing transmission of genetic diseases, they said.
 

Be mindful of consequences of testing

In an interview, Dr. Jungheim said she was surprised by some of the findings. “I thought we would see that PGT-A utilization was lower in states without mandates given the already high cost of IVF for patients paying out of pocket. I was also surprised to see that more males were born after PGT-A; it suggests that overall, patients using PGT-A favor males.

“For clinicians, we need to be mindful of the long-term impact of our practices,” she emphasized. “Shifting the sex ratio in favor of one sex or the other is an unintended consequence of IVF with PGT-A that can have negative implications for future generations.”

In the study, the researchers proposed a revision to the American Society for Reproductive Medicine Ethics Committee opinion on sex selection to provide guidance in keeping with ASRM’s mission of “accessible, ethical, and quality reproductive care for every person.”

However, “even if the ASRM Ethics Committee Opinion was revised, it’s up to clinicians to decide what they are comfortable with,” said Dr. Jungheim. “When patients are paying out of pocket for expensive treatments that require emotional investment and time, it can be difficult to keep medical decision making strictly evidence based.” Improved insurance coverage and access to fertility care may help with some of these decisions, but more real-world evidence is needed. 
 

Let’s talk about sex (selection)

The study findings are both “novel and sobering,” and enhance the current body of evidence of associations between state insurance mandates and IVF outcomes, Jennifer Eaton, MD, of Brown University, Providence, R.I., wrote in an accompanying editorial.

“The association between mandate status and elective sex selection is particularly eye-opening,” said Dr. Eaton. The overall increased use of PGT for sex selection does not account for sex selection as part of testing for aneuploidy. In fact, “patients with euploid embryos of both sexes are frequently given the opportunity to select which embryo to transfer.”

The current study provides “compelling evidence that it is time to revisit the ethical dilemma of elective sex selection in the United States,” Dr. Eaton emphasized. The current ASRM guidance states that IVF clinics are not obligated to provide or refuse to provide nonmedically indicated methods of sex selection, but in light of the current study and other studies, a revision to the existing ASRM Ethics Committee opinion is needed.

The study received no outside funding. Neither the researchers nor Dr. Eaton had any financial conflicts to disclose.

More than half of research on homeopathic remedies is unpublished or unregistered, according to a new analysis.

Homeopathy is a form of alternative medicine based on the concept that increasing dilution of a substance leads to a stronger treatment effect.

The authors of the new paper, published in BMJ Evidence-Based Medicine, also found that a quarter of the 90 randomized published trials on homeopathic remedies they analyzed changed their results before publication.

The benefits of homeopathy touted in studies may be greatly exaggerated, suggest the authors, Gerald Gartlehner, MD, of Danube University, Krems, Austria, and colleagues.

The results raise awareness that published homeopathy trials represent a limited proportion of research, skewed toward favorable results, they wrote.

“This likely affects the validity of the body of evidence of homeopathic literature and may substantially overestimate the true treatment effect of homeopathic remedies,” they concluded.

Homeopathy as practiced today was developed approximately 200 years ago in Germany, and despite ongoing debate about its effectiveness, it remains a popular alternative to conventional medicine in many developed countries, the authors noted.

According to the National Institutes of Health, homeopathy is based on the idea of “like cures like,” meaning that a disease can be cured with a substance that produces similar symptoms in healthy people, and the “law of minimum dose,” meaning that a lower dose of medication will be more effective. “Many homeopathic products are so diluted that no molecules of the original substance remain,” according to the NIH.

Homeopathy is not subject to most regulatory requirements, so assessment of effectiveness of homeopathic remedies is limited to published data, the researchers said. “When no information is publicly available about the majority of homeopathic trials, sound conclusions about the efficacy and the risks of using homeopathic medicinal products for treating health conditions are impossible,” they wrote.
 

Study methods and findings

The researchers examined 17 trial registries for studies involving homeopathic remedies conducted since 2002.

The registries included clinicaltrials.gov, the EU Clinical Trials Register, and the International Clinical Trials Registry Platform up to April 2019 to identify registered homeopathy trials.

To determine whether registered trials were published and to identify trials that were published but unregistered, the researchers examined PubMed, the Allied and Complementary Medicine Database, Embase, and Google Scholar up to April 2021.

They found that approximately 38% of registered trials of homeopathy were never published, and 53% of the published randomized, controlled trials (RCTs) were not registered. Notably, 25% of the trials that were registered and published showed primary outcomes that were changed compared with the registry.

The number of registered homeopathy trials increased significantly over the past 5 years, but approximately one-third (30%) of trials published during the last 5 years were not registered, they said. In a meta-analysis, unregistered RCTs showed significantly greater treatment effects than registered RCTs, with standardized mean differences of –0.53 and –0.14, respectively.

The study findings were limited by several factors including the potential for missed records of studies not covered by the registries searched. Other limitations include the analysis of pooled data from homeopathic treatments that may not generalize to personalized homeopathy, and the exclusion of trials labeled as terminated or suspended.
 

Proceed with caution before recommending use of homeopathic remedies, says expert

Linda Girgis, MD, noted that prior to reading this report she had known that most homeopathic remedies didn’t have any evidence of being effective, and that, therefore, the results validated her understanding of the findings of studies of homeopathy.

The study is especially important at this time in the wake of the COVID-19 pandemic, Dr. Girgis, a family physician in private practice in South River, N.J., said in an interview.

“Many people are promoting treatments that don’t have any evidence that they are effective, and more people are turning to homeopathic treatments not knowing the risks and assuming they are safe,” she continued. “Many people are taking advantage of this and trying to cash in on this with ill-proven remedies.”

Homeopathic remedies become especially harmful when patients think they can use them instead of traditional medicine, she added.

Noting that some homeopathic remedies have been studied and show some evidence that they work, Dr. Girgis said there may be a role for certain ones in primary care.

“An example would be black cohosh or primrose oil for perimenopausal hot flashes. This could be a good alternative when you want to avoid hormonal supplements,” she said.

At the same time, Dr. Girgis advised clinicians to be cautious about suggesting homeopathic remedies to patients.

“Homeopathy seems to be a good money maker if you sell these products. However, you are not protected from liability and can be found more liable for prescribing off-label treatments or those not [Food and Drug Administration] approved,” Dr. Girgis said. Her general message to clinicians: Stick with evidence-based medicine.

Her message to patients who might want to pursue homeopathic remedies is that just because something is “homeopathic” or natural doesn’t mean that it is safe.

“There are some [homeopathic] products that have caused liver damage or other problems,” she explained. “Also, these remedies can interact with other medications.”

The study received no outside funding. The researchers and Dr. Girgis had no financial conflicts to disclose.

More than half of research on homeopathic remedies is unpublished or unregistered, according to a new analysis.

Homeopathy is a form of alternative medicine based on the concept that increasing dilution of a substance leads to a stronger treatment effect.

The authors of the new paper, published in BMJ Evidence-Based Medicine, also found that a quarter of the 90 randomized published trials on homeopathic remedies they analyzed changed their results before publication.

The benefits of homeopathy touted in studies may be greatly exaggerated, suggest the authors, Gerald Gartlehner, MD, of Danube University, Krems, Austria, and colleagues.

The results raise awareness that published homeopathy trials represent a limited proportion of research, skewed toward favorable results, they wrote.

“This likely affects the validity of the body of evidence of homeopathic literature and may substantially overestimate the true treatment effect of homeopathic remedies,” they concluded.

Homeopathy as practiced today was developed approximately 200 years ago in Germany, and despite ongoing debate about its effectiveness, it remains a popular alternative to conventional medicine in many developed countries, the authors noted.

According to the National Institutes of Health, homeopathy is based on the idea of “like cures like,” meaning that a disease can be cured with a substance that produces similar symptoms in healthy people, and the “law of minimum dose,” meaning that a lower dose of medication will be more effective. “Many homeopathic products are so diluted that no molecules of the original substance remain,” according to the NIH.

Homeopathy is not subject to most regulatory requirements, so assessment of effectiveness of homeopathic remedies is limited to published data, the researchers said. “When no information is publicly available about the majority of homeopathic trials, sound conclusions about the efficacy and the risks of using homeopathic medicinal products for treating health conditions are impossible,” they wrote.
 

Study methods and findings

The researchers examined 17 trial registries for studies involving homeopathic remedies conducted since 2002.

The registries included clinicaltrials.gov, the EU Clinical Trials Register, and the International Clinical Trials Registry Platform up to April 2019 to identify registered homeopathy trials.

To determine whether registered trials were published and to identify trials that were published but unregistered, the researchers examined PubMed, the Allied and Complementary Medicine Database, Embase, and Google Scholar up to April 2021.

They found that approximately 38% of registered trials of homeopathy were never published, and 53% of the published randomized, controlled trials (RCTs) were not registered. Notably, 25% of the trials that were registered and published showed primary outcomes that were changed compared with the registry.

The number of registered homeopathy trials increased significantly over the past 5 years, but approximately one-third (30%) of trials published during the last 5 years were not registered, they said. In a meta-analysis, unregistered RCTs showed significantly greater treatment effects than registered RCTs, with standardized mean differences of –0.53 and –0.14, respectively.

The study findings were limited by several factors including the potential for missed records of studies not covered by the registries searched. Other limitations include the analysis of pooled data from homeopathic treatments that may not generalize to personalized homeopathy, and the exclusion of trials labeled as terminated or suspended.
 

Proceed with caution before recommending use of homeopathic remedies, says expert

Linda Girgis, MD, noted that prior to reading this report she had known that most homeopathic remedies didn’t have any evidence of being effective, and that, therefore, the results validated her understanding of the findings of studies of homeopathy.

The study is especially important at this time in the wake of the COVID-19 pandemic, Dr. Girgis, a family physician in private practice in South River, N.J., said in an interview.

“Many people are promoting treatments that don’t have any evidence that they are effective, and more people are turning to homeopathic treatments not knowing the risks and assuming they are safe,” she continued. “Many people are taking advantage of this and trying to cash in on this with ill-proven remedies.”

Homeopathic remedies become especially harmful when patients think they can use them instead of traditional medicine, she added.

Noting that some homeopathic remedies have been studied and show some evidence that they work, Dr. Girgis said there may be a role for certain ones in primary care.

“An example would be black cohosh or primrose oil for perimenopausal hot flashes. This could be a good alternative when you want to avoid hormonal supplements,” she said.

At the same time, Dr. Girgis advised clinicians to be cautious about suggesting homeopathic remedies to patients.

“Homeopathy seems to be a good money maker if you sell these products. However, you are not protected from liability and can be found more liable for prescribing off-label treatments or those not [Food and Drug Administration] approved,” Dr. Girgis said. Her general message to clinicians: Stick with evidence-based medicine.

Her message to patients who might want to pursue homeopathic remedies is that just because something is “homeopathic” or natural doesn’t mean that it is safe.

“There are some [homeopathic] products that have caused liver damage or other problems,” she explained. “Also, these remedies can interact with other medications.”

The study received no outside funding. The researchers and Dr. Girgis had no financial conflicts to disclose.

More than half of research on homeopathic remedies is unpublished or unregistered, according to a new analysis.

Homeopathy is a form of alternative medicine based on the concept that increasing dilution of a substance leads to a stronger treatment effect.

The authors of the new paper, published in BMJ Evidence-Based Medicine, also found that a quarter of the 90 randomized published trials on homeopathic remedies they analyzed changed their results before publication.

The benefits of homeopathy touted in studies may be greatly exaggerated, suggest the authors, Gerald Gartlehner, MD, of Danube University, Krems, Austria, and colleagues.

The results raise awareness that published homeopathy trials represent a limited proportion of research, skewed toward favorable results, they wrote.

“This likely affects the validity of the body of evidence of homeopathic literature and may substantially overestimate the true treatment effect of homeopathic remedies,” they concluded.

Homeopathy as practiced today was developed approximately 200 years ago in Germany, and despite ongoing debate about its effectiveness, it remains a popular alternative to conventional medicine in many developed countries, the authors noted.

According to the National Institutes of Health, homeopathy is based on the idea of “like cures like,” meaning that a disease can be cured with a substance that produces similar symptoms in healthy people, and the “law of minimum dose,” meaning that a lower dose of medication will be more effective. “Many homeopathic products are so diluted that no molecules of the original substance remain,” according to the NIH.

Homeopathy is not subject to most regulatory requirements, so assessment of effectiveness of homeopathic remedies is limited to published data, the researchers said. “When no information is publicly available about the majority of homeopathic trials, sound conclusions about the efficacy and the risks of using homeopathic medicinal products for treating health conditions are impossible,” they wrote.
 

Study methods and findings

The researchers examined 17 trial registries for studies involving homeopathic remedies conducted since 2002.

The registries included clinicaltrials.gov, the EU Clinical Trials Register, and the International Clinical Trials Registry Platform up to April 2019 to identify registered homeopathy trials.

To determine whether registered trials were published and to identify trials that were published but unregistered, the researchers examined PubMed, the Allied and Complementary Medicine Database, Embase, and Google Scholar up to April 2021.

They found that approximately 38% of registered trials of homeopathy were never published, and 53% of the published randomized, controlled trials (RCTs) were not registered. Notably, 25% of the trials that were registered and published showed primary outcomes that were changed compared with the registry.

The number of registered homeopathy trials increased significantly over the past 5 years, but approximately one-third (30%) of trials published during the last 5 years were not registered, they said. In a meta-analysis, unregistered RCTs showed significantly greater treatment effects than registered RCTs, with standardized mean differences of –0.53 and –0.14, respectively.

The study findings were limited by several factors including the potential for missed records of studies not covered by the registries searched. Other limitations include the analysis of pooled data from homeopathic treatments that may not generalize to personalized homeopathy, and the exclusion of trials labeled as terminated or suspended.
 

Proceed with caution before recommending use of homeopathic remedies, says expert

Linda Girgis, MD, noted that prior to reading this report she had known that most homeopathic remedies didn’t have any evidence of being effective, and that, therefore, the results validated her understanding of the findings of studies of homeopathy.

The study is especially important at this time in the wake of the COVID-19 pandemic, Dr. Girgis, a family physician in private practice in South River, N.J., said in an interview.

“Many people are promoting treatments that don’t have any evidence that they are effective, and more people are turning to homeopathic treatments not knowing the risks and assuming they are safe,” she continued. “Many people are taking advantage of this and trying to cash in on this with ill-proven remedies.”

Homeopathic remedies become especially harmful when patients think they can use them instead of traditional medicine, she added.

Noting that some homeopathic remedies have been studied and show some evidence that they work, Dr. Girgis said there may be a role for certain ones in primary care.

“An example would be black cohosh or primrose oil for perimenopausal hot flashes. This could be a good alternative when you want to avoid hormonal supplements,” she said.

At the same time, Dr. Girgis advised clinicians to be cautious about suggesting homeopathic remedies to patients.

“Homeopathy seems to be a good money maker if you sell these products. However, you are not protected from liability and can be found more liable for prescribing off-label treatments or those not [Food and Drug Administration] approved,” Dr. Girgis said. Her general message to clinicians: Stick with evidence-based medicine.

Her message to patients who might want to pursue homeopathic remedies is that just because something is “homeopathic” or natural doesn’t mean that it is safe.

“There are some [homeopathic] products that have caused liver damage or other problems,” she explained. “Also, these remedies can interact with other medications.”

The study received no outside funding. The researchers and Dr. Girgis had no financial conflicts to disclose.

Most lung cancer patients with interstitial lung disease will not benefit from thoracic radiotherapy, based on data from a systematic review of 24 studies.

Thoracic radiotherapy remains a key part of lung cancer treatment for early and metastatic disease. However, patients with both small cell lung cancer (SCLC) and non–small cell lung cancer (NSCLC) associated with interstitial lung disease (ILD) fare worse than do those without ILD, often because of acute exacerbation of ILD and severe or fatal pneumonitis, wrote Animesh Saha, MD, of Apollo Multi-Specialty Hospitals, Kolkata, India, and colleagues. Consequently, clinicians may hesitate to offer radiotherapy to these patients.

In a review published in Clinical Oncology, the researchers identified 24 studies, including phase II and phase III randomized or nonrandomized trials, as well as prospective, observational studies and retrospective real-world studies. The goal of the review was to report the incidence and predictors of radiation pneumonitis associated with different types of thoracic radiotherapy for lung cancer patients with ILD, the researchers said. Treatment types included curative-intent fractionated radiotherapy or chemoradiotherapy or moderately hypofractionated (nonstereotactic ablative radiotherapy [SABR]) and hyperfractionated radiotherapy as well as particle beam therapies.

The studies included patients with SCLC or NSCLC and any form of ILD, including subclinical, radiologically diagnosed, or symptomatic, the researchers said.

Overall, the median incidence of grade 3 or higher radiation pneumonitis was 19.7%; the median incidence in patients treated with conventional radical radiotherapy, SABR, and particle beam therapy was 31.8%, 11.9%, and 20.25%, respectively.

Eighteen studies reported grade 5 radiation pneumonitis; the overall median incidence was 6%, but as high as 60% in some studies. When separated by treatment type, the median incidence was 2.7%, 6.25%, and 6.25%, respectively, in patients treated with radical radiotherapy (non-SABR), SABR, and particle beam therapy.

Independent predictors of severe radiation pneumonitis (grade 2 or higher and grade 3 or higher) included subclinical or radiological ILD, the researchers said. Among ILD subtypes, studies have shown increased risk for severe radiation pneumonitis among those with non-IPF or non-UIP pattern fibrosis.

In addition, patient-related factors of low forced vital capacity (FVC) and low forced expiratory volume in 1 second (FEV₁), have been associated with severe radiation pneumonitis, the researchers said. They also found increased risk for patients with lower lobe tumor location compared to other lobes.

As for treatment-related factors, a history of gemcitabine chemotherapy was associated with an increased risk of grade 3 or higher radiation pneumonitis.

“There is always concern about using thoracic radiotherapy in lung cancer patients with coexisting ILD in view of the risks involved,” the researchers wrote in their discussion of the findings. “Although thoracic radiotherapy is expected to produce similar local control, overall survival is worse in lung cancer patients with ILD than without, probably due to the poor prognosis associated with ILD and associated treatment-related mortality,” they said.

The findings were limited by several factors including the heterogeneity of the studies and study population and the retrospective design of most of the studies, the researchers noted.

However, the results highlight the increased risk of severe and fatal radiation pneumonitis in lung cancer patients with ILD and the need for careful patient selection and counseling if thoracic radiotherapy is to be considered, they concluded.

The study received no outside funding. The researchers had no financial conflicts to disclose.

Most lung cancer patients with interstitial lung disease will not benefit from thoracic radiotherapy, based on data from a systematic review of 24 studies.

Thoracic radiotherapy remains a key part of lung cancer treatment for early and metastatic disease. However, patients with both small cell lung cancer (SCLC) and non–small cell lung cancer (NSCLC) associated with interstitial lung disease (ILD) fare worse than do those without ILD, often because of acute exacerbation of ILD and severe or fatal pneumonitis, wrote Animesh Saha, MD, of Apollo Multi-Specialty Hospitals, Kolkata, India, and colleagues. Consequently, clinicians may hesitate to offer radiotherapy to these patients.

In a review published in Clinical Oncology, the researchers identified 24 studies, including phase II and phase III randomized or nonrandomized trials, as well as prospective, observational studies and retrospective real-world studies. The goal of the review was to report the incidence and predictors of radiation pneumonitis associated with different types of thoracic radiotherapy for lung cancer patients with ILD, the researchers said. Treatment types included curative-intent fractionated radiotherapy or chemoradiotherapy or moderately hypofractionated (nonstereotactic ablative radiotherapy [SABR]) and hyperfractionated radiotherapy as well as particle beam therapies.

The studies included patients with SCLC or NSCLC and any form of ILD, including subclinical, radiologically diagnosed, or symptomatic, the researchers said.

Overall, the median incidence of grade 3 or higher radiation pneumonitis was 19.7%; the median incidence in patients treated with conventional radical radiotherapy, SABR, and particle beam therapy was 31.8%, 11.9%, and 20.25%, respectively.

Eighteen studies reported grade 5 radiation pneumonitis; the overall median incidence was 6%, but as high as 60% in some studies. When separated by treatment type, the median incidence was 2.7%, 6.25%, and 6.25%, respectively, in patients treated with radical radiotherapy (non-SABR), SABR, and particle beam therapy.

Independent predictors of severe radiation pneumonitis (grade 2 or higher and grade 3 or higher) included subclinical or radiological ILD, the researchers said. Among ILD subtypes, studies have shown increased risk for severe radiation pneumonitis among those with non-IPF or non-UIP pattern fibrosis.

In addition, patient-related factors of low forced vital capacity (FVC) and low forced expiratory volume in 1 second (FEV₁), have been associated with severe radiation pneumonitis, the researchers said. They also found increased risk for patients with lower lobe tumor location compared to other lobes.

As for treatment-related factors, a history of gemcitabine chemotherapy was associated with an increased risk of grade 3 or higher radiation pneumonitis.

“There is always concern about using thoracic radiotherapy in lung cancer patients with coexisting ILD in view of the risks involved,” the researchers wrote in their discussion of the findings. “Although thoracic radiotherapy is expected to produce similar local control, overall survival is worse in lung cancer patients with ILD than without, probably due to the poor prognosis associated with ILD and associated treatment-related mortality,” they said.

The findings were limited by several factors including the heterogeneity of the studies and study population and the retrospective design of most of the studies, the researchers noted.

However, the results highlight the increased risk of severe and fatal radiation pneumonitis in lung cancer patients with ILD and the need for careful patient selection and counseling if thoracic radiotherapy is to be considered, they concluded.

The study received no outside funding. The researchers had no financial conflicts to disclose.

Most lung cancer patients with interstitial lung disease will not benefit from thoracic radiotherapy, based on data from a systematic review of 24 studies.

Thoracic radiotherapy remains a key part of lung cancer treatment for early and metastatic disease. However, patients with both small cell lung cancer (SCLC) and non–small cell lung cancer (NSCLC) associated with interstitial lung disease (ILD) fare worse than do those without ILD, often because of acute exacerbation of ILD and severe or fatal pneumonitis, wrote Animesh Saha, MD, of Apollo Multi-Specialty Hospitals, Kolkata, India, and colleagues. Consequently, clinicians may hesitate to offer radiotherapy to these patients.

In a review published in Clinical Oncology, the researchers identified 24 studies, including phase II and phase III randomized or nonrandomized trials, as well as prospective, observational studies and retrospective real-world studies. The goal of the review was to report the incidence and predictors of radiation pneumonitis associated with different types of thoracic radiotherapy for lung cancer patients with ILD, the researchers said. Treatment types included curative-intent fractionated radiotherapy or chemoradiotherapy or moderately hypofractionated (nonstereotactic ablative radiotherapy [SABR]) and hyperfractionated radiotherapy as well as particle beam therapies.

The studies included patients with SCLC or NSCLC and any form of ILD, including subclinical, radiologically diagnosed, or symptomatic, the researchers said.

Overall, the median incidence of grade 3 or higher radiation pneumonitis was 19.7%; the median incidence in patients treated with conventional radical radiotherapy, SABR, and particle beam therapy was 31.8%, 11.9%, and 20.25%, respectively.

Eighteen studies reported grade 5 radiation pneumonitis; the overall median incidence was 6%, but as high as 60% in some studies. When separated by treatment type, the median incidence was 2.7%, 6.25%, and 6.25%, respectively, in patients treated with radical radiotherapy (non-SABR), SABR, and particle beam therapy.

Independent predictors of severe radiation pneumonitis (grade 2 or higher and grade 3 or higher) included subclinical or radiological ILD, the researchers said. Among ILD subtypes, studies have shown increased risk for severe radiation pneumonitis among those with non-IPF or non-UIP pattern fibrosis.

In addition, patient-related factors of low forced vital capacity (FVC) and low forced expiratory volume in 1 second (FEV₁), have been associated with severe radiation pneumonitis, the researchers said. They also found increased risk for patients with lower lobe tumor location compared to other lobes.

As for treatment-related factors, a history of gemcitabine chemotherapy was associated with an increased risk of grade 3 or higher radiation pneumonitis.

“There is always concern about using thoracic radiotherapy in lung cancer patients with coexisting ILD in view of the risks involved,” the researchers wrote in their discussion of the findings. “Although thoracic radiotherapy is expected to produce similar local control, overall survival is worse in lung cancer patients with ILD than without, probably due to the poor prognosis associated with ILD and associated treatment-related mortality,” they said.

The findings were limited by several factors including the heterogeneity of the studies and study population and the retrospective design of most of the studies, the researchers noted.

However, the results highlight the increased risk of severe and fatal radiation pneumonitis in lung cancer patients with ILD and the need for careful patient selection and counseling if thoracic radiotherapy is to be considered, they concluded.

The study received no outside funding. The researchers had no financial conflicts to disclose.