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New guidelines for MTX use in pediatric inflammatory skin disease unveiled
While the typical dose of methotrexate (MTX) for inflammatory disease in pediatric patients varies in published studies, the maximum dose is considered to be 1 mg/kg and not to exceed 25 mg/week. In addition, test doses are not necessary for pediatric patients starting low dose (1 mg/kg or less) MTX for inflammatory skin disease, and the onset of efficacy with MTX may take 8-16 weeks.
and published online in Pediatric Dermatology.
“Methotrexate is a cost-effective, readily accessible, well-tolerated, useful, and time-honored option for children with a spectrum of inflammatory skin diseases,” project cochair Elaine C. Siegfried, MD, professor of pediatrics and dermatology at Saint Louis University, told this news organization. “Although considered an ‘immune suppressant’ by some, it is more accurately classified as an immune modulator and has been widely used for more than 50 years, and remains the standard of care when administered at very high doses and intrathecally in children with acute lymphoblastic leukemia – a practice that supports safety. But many details that support optimized treatment are not widely appreciated.”
In their guidelines document, Dr. Siegfried and her 22 coauthors noted that Food and Drug Administration labeling does not include approved indications for the use of MTX for many inflammatory skin diseases in pediatric patients, including morphea, psoriasis, atopic dermatitis, and alopecia areata. “Furthermore, some clinicians may be unfamiliar or uncomfortable prescribing medications off label for pediatric patients, causing delayed initiation, premature drug discontinuation, or use of less advantageous alternatives,” they wrote.
To address this unmet need, Dr. Siegfried and the other committee members used a modified Delphi process to reach agreement on recommendations related to five key topic areas: indications and contraindications, dosing, interactions with immunizations and medications, potential for and management of adverse effects, and monitoring needs. Consensus was predefined as at least 70% of participants rating a statement as 7-9 on the Likert scale. The effort to develop 46 recommendations has been a work in progress for almost 5 years, “somewhat delayed by the pandemic,” Dr. Siegfried, past president and director of the American Board of Dermatology, said in an interview. “But it remains relevant, despite the emergence of biologics and JAK inhibitors for treating inflammatory skin conditions in children. Although the mechanism-of-action of low-dose MTX is not clear, it may overlap with the newer small molecules.”
The guidelines contain several pearls to guide optimal dosing, including the following key points:
- MTX can be discontinued abruptly without adverse effects, other than the risk of disease worsening.
- Folic acid supplementation (starting at 1 mg/day, regardless of weight) is an effective approach to minimizing associated gastrointestinal adverse effects.
- Concomitant use of MTX and antibiotics (including trimethoprim-sulfamethoxazole) and NSAIDS are not contraindicated for most pediatric patients treated for inflammatory skin disease.
- Live virus vaccine boosters such as varicella-zoster virus (VZV) and measles, mumps, and rubella (MMR) are not contraindicated in patients taking MTX; there are insufficient data to make recommendations for or against primary immunization with MMR vaccine in patients taking MTX; inactivated vaccines should be given to patients taking MTX.
- Routine surveillance laboratory monitoring (i.e., CBC with differential, alanine transaminase, aspartate aminotransferase, creatinine) is recommended at baseline, after 1 month of treatment, and every 3-4 months thereafter.
- Transient transaminase elevation (≤ 3 upper limit normal for < 3 months) is not uncommon with low-dose MTX and does not usually require interruption of MTX. The most likely causes are concomitant viral infection, MTX dosing within 24 hours prior to phlebotomy, recent administration of other medications (such as acetaminophen), and/or recent alcohol consumption.
- Liver biopsy is not indicated for routine monitoring of pediatric patients taking low-dose MTX.
According to Dr. Siegfried, consensus of the committee members was lowest on the need for a test dose of MTX.
Overall, she said in the interview, helping to craft the guidelines caused her to reflect on how her approach to using MTX has evolved over the past 35 years, after treating “many hundreds” of patients. “I was gratified to confirm similar practice patterns among my colleagues,” she added.
The project’s other cochair was Heather Brandling-Bennett, MD, a dermatologist at Seattle Children’s Hospital. This work was supported by a grant from the Pediatric Dermatology Research Alliance (PeDRA), with additional funding from the National Eczema Association and the National Psoriasis Foundation. Dr. Siegfried disclosed ties with AbbVie, Boehringer Ingelheim, Incyte, LEO Pharma, Novan, Novartis, Pierre Fabre, Pfizer, Regeneron, Sanofi Genzyme, UCB, and Verrica. She has participated in contracted research for AI Therapeutics, and has served as principal investigator for Janssen. Many of the guideline coauthors disclosed having received grant support and other funding from pharmaceutical companies.
While the typical dose of methotrexate (MTX) for inflammatory disease in pediatric patients varies in published studies, the maximum dose is considered to be 1 mg/kg and not to exceed 25 mg/week. In addition, test doses are not necessary for pediatric patients starting low dose (1 mg/kg or less) MTX for inflammatory skin disease, and the onset of efficacy with MTX may take 8-16 weeks.
and published online in Pediatric Dermatology.
“Methotrexate is a cost-effective, readily accessible, well-tolerated, useful, and time-honored option for children with a spectrum of inflammatory skin diseases,” project cochair Elaine C. Siegfried, MD, professor of pediatrics and dermatology at Saint Louis University, told this news organization. “Although considered an ‘immune suppressant’ by some, it is more accurately classified as an immune modulator and has been widely used for more than 50 years, and remains the standard of care when administered at very high doses and intrathecally in children with acute lymphoblastic leukemia – a practice that supports safety. But many details that support optimized treatment are not widely appreciated.”
In their guidelines document, Dr. Siegfried and her 22 coauthors noted that Food and Drug Administration labeling does not include approved indications for the use of MTX for many inflammatory skin diseases in pediatric patients, including morphea, psoriasis, atopic dermatitis, and alopecia areata. “Furthermore, some clinicians may be unfamiliar or uncomfortable prescribing medications off label for pediatric patients, causing delayed initiation, premature drug discontinuation, or use of less advantageous alternatives,” they wrote.
To address this unmet need, Dr. Siegfried and the other committee members used a modified Delphi process to reach agreement on recommendations related to five key topic areas: indications and contraindications, dosing, interactions with immunizations and medications, potential for and management of adverse effects, and monitoring needs. Consensus was predefined as at least 70% of participants rating a statement as 7-9 on the Likert scale. The effort to develop 46 recommendations has been a work in progress for almost 5 years, “somewhat delayed by the pandemic,” Dr. Siegfried, past president and director of the American Board of Dermatology, said in an interview. “But it remains relevant, despite the emergence of biologics and JAK inhibitors for treating inflammatory skin conditions in children. Although the mechanism-of-action of low-dose MTX is not clear, it may overlap with the newer small molecules.”
The guidelines contain several pearls to guide optimal dosing, including the following key points:
- MTX can be discontinued abruptly without adverse effects, other than the risk of disease worsening.
- Folic acid supplementation (starting at 1 mg/day, regardless of weight) is an effective approach to minimizing associated gastrointestinal adverse effects.
- Concomitant use of MTX and antibiotics (including trimethoprim-sulfamethoxazole) and NSAIDS are not contraindicated for most pediatric patients treated for inflammatory skin disease.
- Live virus vaccine boosters such as varicella-zoster virus (VZV) and measles, mumps, and rubella (MMR) are not contraindicated in patients taking MTX; there are insufficient data to make recommendations for or against primary immunization with MMR vaccine in patients taking MTX; inactivated vaccines should be given to patients taking MTX.
- Routine surveillance laboratory monitoring (i.e., CBC with differential, alanine transaminase, aspartate aminotransferase, creatinine) is recommended at baseline, after 1 month of treatment, and every 3-4 months thereafter.
- Transient transaminase elevation (≤ 3 upper limit normal for < 3 months) is not uncommon with low-dose MTX and does not usually require interruption of MTX. The most likely causes are concomitant viral infection, MTX dosing within 24 hours prior to phlebotomy, recent administration of other medications (such as acetaminophen), and/or recent alcohol consumption.
- Liver biopsy is not indicated for routine monitoring of pediatric patients taking low-dose MTX.
According to Dr. Siegfried, consensus of the committee members was lowest on the need for a test dose of MTX.
Overall, she said in the interview, helping to craft the guidelines caused her to reflect on how her approach to using MTX has evolved over the past 35 years, after treating “many hundreds” of patients. “I was gratified to confirm similar practice patterns among my colleagues,” she added.
The project’s other cochair was Heather Brandling-Bennett, MD, a dermatologist at Seattle Children’s Hospital. This work was supported by a grant from the Pediatric Dermatology Research Alliance (PeDRA), with additional funding from the National Eczema Association and the National Psoriasis Foundation. Dr. Siegfried disclosed ties with AbbVie, Boehringer Ingelheim, Incyte, LEO Pharma, Novan, Novartis, Pierre Fabre, Pfizer, Regeneron, Sanofi Genzyme, UCB, and Verrica. She has participated in contracted research for AI Therapeutics, and has served as principal investigator for Janssen. Many of the guideline coauthors disclosed having received grant support and other funding from pharmaceutical companies.
While the typical dose of methotrexate (MTX) for inflammatory disease in pediatric patients varies in published studies, the maximum dose is considered to be 1 mg/kg and not to exceed 25 mg/week. In addition, test doses are not necessary for pediatric patients starting low dose (1 mg/kg or less) MTX for inflammatory skin disease, and the onset of efficacy with MTX may take 8-16 weeks.
and published online in Pediatric Dermatology.
“Methotrexate is a cost-effective, readily accessible, well-tolerated, useful, and time-honored option for children with a spectrum of inflammatory skin diseases,” project cochair Elaine C. Siegfried, MD, professor of pediatrics and dermatology at Saint Louis University, told this news organization. “Although considered an ‘immune suppressant’ by some, it is more accurately classified as an immune modulator and has been widely used for more than 50 years, and remains the standard of care when administered at very high doses and intrathecally in children with acute lymphoblastic leukemia – a practice that supports safety. But many details that support optimized treatment are not widely appreciated.”
In their guidelines document, Dr. Siegfried and her 22 coauthors noted that Food and Drug Administration labeling does not include approved indications for the use of MTX for many inflammatory skin diseases in pediatric patients, including morphea, psoriasis, atopic dermatitis, and alopecia areata. “Furthermore, some clinicians may be unfamiliar or uncomfortable prescribing medications off label for pediatric patients, causing delayed initiation, premature drug discontinuation, or use of less advantageous alternatives,” they wrote.
To address this unmet need, Dr. Siegfried and the other committee members used a modified Delphi process to reach agreement on recommendations related to five key topic areas: indications and contraindications, dosing, interactions with immunizations and medications, potential for and management of adverse effects, and monitoring needs. Consensus was predefined as at least 70% of participants rating a statement as 7-9 on the Likert scale. The effort to develop 46 recommendations has been a work in progress for almost 5 years, “somewhat delayed by the pandemic,” Dr. Siegfried, past president and director of the American Board of Dermatology, said in an interview. “But it remains relevant, despite the emergence of biologics and JAK inhibitors for treating inflammatory skin conditions in children. Although the mechanism-of-action of low-dose MTX is not clear, it may overlap with the newer small molecules.”
The guidelines contain several pearls to guide optimal dosing, including the following key points:
- MTX can be discontinued abruptly without adverse effects, other than the risk of disease worsening.
- Folic acid supplementation (starting at 1 mg/day, regardless of weight) is an effective approach to minimizing associated gastrointestinal adverse effects.
- Concomitant use of MTX and antibiotics (including trimethoprim-sulfamethoxazole) and NSAIDS are not contraindicated for most pediatric patients treated for inflammatory skin disease.
- Live virus vaccine boosters such as varicella-zoster virus (VZV) and measles, mumps, and rubella (MMR) are not contraindicated in patients taking MTX; there are insufficient data to make recommendations for or against primary immunization with MMR vaccine in patients taking MTX; inactivated vaccines should be given to patients taking MTX.
- Routine surveillance laboratory monitoring (i.e., CBC with differential, alanine transaminase, aspartate aminotransferase, creatinine) is recommended at baseline, after 1 month of treatment, and every 3-4 months thereafter.
- Transient transaminase elevation (≤ 3 upper limit normal for < 3 months) is not uncommon with low-dose MTX and does not usually require interruption of MTX. The most likely causes are concomitant viral infection, MTX dosing within 24 hours prior to phlebotomy, recent administration of other medications (such as acetaminophen), and/or recent alcohol consumption.
- Liver biopsy is not indicated for routine monitoring of pediatric patients taking low-dose MTX.
According to Dr. Siegfried, consensus of the committee members was lowest on the need for a test dose of MTX.
Overall, she said in the interview, helping to craft the guidelines caused her to reflect on how her approach to using MTX has evolved over the past 35 years, after treating “many hundreds” of patients. “I was gratified to confirm similar practice patterns among my colleagues,” she added.
The project’s other cochair was Heather Brandling-Bennett, MD, a dermatologist at Seattle Children’s Hospital. This work was supported by a grant from the Pediatric Dermatology Research Alliance (PeDRA), with additional funding from the National Eczema Association and the National Psoriasis Foundation. Dr. Siegfried disclosed ties with AbbVie, Boehringer Ingelheim, Incyte, LEO Pharma, Novan, Novartis, Pierre Fabre, Pfizer, Regeneron, Sanofi Genzyme, UCB, and Verrica. She has participated in contracted research for AI Therapeutics, and has served as principal investigator for Janssen. Many of the guideline coauthors disclosed having received grant support and other funding from pharmaceutical companies.
FROM PEDIATRIC DERMATOLOGY
New clues to an old mystery: Recent gains in endometriosis
In 1927, American gynecologist John Sampson published his theory of the etiology of endometriosis, postulating that retrograde flow of endometrial debris flows backward through the fallopian tubes during menses into the peritoneal cavity. Dr. Sampson’s notion remains the main paradigm today, mentioned still in recent articles on the topic, but it has a flaw: Although the theory may account for how endometrial tissue escapes the uterus, a 1984 study revealed that this phenomenon occurs in 90% of women. Why, then, do only 10% of women suffer from endometriosis?
Endometriosis describes a condition in which endometrial tissue lining the uterus is found outside the uterus. The disease can be painful, even crippling. As many as 30% of women in their reproductive years who have endometriosis are infertile as a consequence. The hallmarks of the condition are superficial peritoneal lesions of varying color, cysts in the ovaries, deeper nodules accompanied by scarring and adhesion, primarily in the pelvis but sometimes appearing outside the pelvis. The syndrome can be challenging to identify, requiring laparoscopy for definitive diagnosis.
John Sampson aside, scientists have struggled for the past century to identify the cause, or causes, of endometriosis. Hormones clearly play a role in its development, and women with endometriosis have an elevated risk of clear-cell and endometrioid ovarian cancer and autoimmune diseases. Immunodeficiency also could be to blame, if a faulty immune system fails to find and remove endometrial tissue outside of the uterus. A class of chemicals known as endocrine disruptors have been linked to endometriosis, but not definitively. Twin studies have demonstrated that as many as 50% of cases have a genetic basis, while mice with surgically induced endometriosis have been found to have a higher ratio of harmful to beneficial bacteria in their gut.
Several studies published this year point to new insights into the old mystery – with possible implications for ways to treat the disorder.
Perhaps the most surprising came out earlier this year in Science Translational Medicine, as a team of researchers in Japan reported that invasive infection by bacteria of the genus Fusobacterium may cause at least some cases of endometriosis.
Is Fusobacterium the new Helicobacter pylori?
The researchers, from Nagoya University, are the first to suggest that not only might a single bacterial genus cause endometriosis, but that antibiotic treatment could prevent progression of the disease. Using endometrial tissue obtained from 79 women undergoing hysterectomy for endometriosis and 76 women undergoing hysterectomy for other reasons (such as cervical cancer), the team started with gene expression profiling to explore differences between the two sets of samples.
They uncovered an interesting chain of cellular events: macrophages found in endometriotic lesions were secreting transforming growth factor-beta (TGF-beta). TGF-beta in turn stimulated high levels of expression of a gene called TAGLN in fibroblast cells from women with endometriosis but not in fibroblasts from women without endometriosis.
Turning on TAGLN transformed these previously inactive cells into active myofibroblasts, leading to increased proliferation, mobility, and attachment to mesothelial cells, the layer of cells that line body cavities and internal organs. In short, they identified some key players in an environment that seemed very favorable to the development of endometriosis.
“So, the question is: Why are macrophages activated?” said Yutaka Kondo, MD, PhD, the senior author of the study and a professor in the division of cancer biology at the Nagoya (Japan) University Graduate School of Medicine. “We think that there are always bacteria in the endometrium.”
After reviewing data from a previously published study, they used quantitative polymerase chain reaction to rule out one candidate, Erysipelothrix, but scored on their next attempt, identifying Fusobacterium species in endometrial tissue from 64% of the women with endometriosis, compared with fewer than 10% of the controls.
To confirm that the bacteria could cause disease and were not simply bystanders, Dr. Kondo’s team turned to a mouse model for endometriosis, in which endometrial cells are surgically removed from the uteri of mice and injected into the peritoneum of recipient mice, leading to the formation of endometriotic lesions. When mice received further injections of uterine tissue from mice that were infected with F. nucleatum, their lesions were more numerous when compared with mice that received injections of uninfected uterine tissue. Furthermore, antibiotic treatment with metronidazole or chloramphenicol immediately after surgery largely prevented progression to endometriosis, Dr. Kondo and his colleagues reported.
Dr. Kondo likened this relationship between Fusobacterium and endometriosis to that of the link between Helicobacter pylori and peptic ulcers but acknowledged that he doesn’t have all the answers.
“We need more clinical trials, and also we have to know what kind of treatment might be the most effective for the treatment of endometriosis,” Dr. Kondo said, pointing out that other therapies should still be pursued in addition to antibiotics, as not all the samples from women with endometriosis harbored Fusobacterium. “It might be possible that other mechanisms are also involved.”
Don’t write off gut microbiota
Ramakrishna Kommagani, PhD, associate professor of pathology and immunology at Baylor College of Medicine in Houston, agreed. “Endometriosis is a complex disease, which appears to be impacted by many factors, including genetic, epigenetic, and environmental factors,” Dr. Kommagani said.
A key difference between his work and Dr. Kondo’s is his focus on gut microbiota, whereas the Japanese team looked at bacteria in the vagina and endometrium. But Dr. Kommagani said he thinks both could play a role. “Maybe the vaginal microbiome might have a direct impact on disease similar to what we showed on the gut,” he said.
But he said at least part of the answer to why some women develop endometriosis may have to do more with the balance of beneficial and harmful bacteria in the gut rather than because of a single family of microbes like Fusobacterium.
Most recently, by dovetailing a mouse model for inducing endometriosis in mice treated with antibiotics to deplete their gut microbiome, Dr. Kommagani’s lab expanded on its previous work: They showed that the animals developed fewer of the typical lesions seen in endometriosis than those that did not receive antibiotics before all of the mice underwent the surgical procedure used by researchers to induce endometriosis – possibly because they had no bacteria in their gut triggering the inflammatory response required for the development of endometriosis.
But after oral feedings with fecal matter from mice without endometriosis, the microbiota-depleted rodents began developing lesions typical of endometriosis, suggesting that altered gut flora from mice with endometriosis appeared to promote the disorder. Meanwhile, their microbiota-depleted counterparts who were fed fecal matter from mice without endometriosis did not develop the typical lesions.
Dr. Kommagani’s team then compared metabolites from bacteria in stool from mice with and without endometriosis and investigated the in vitro effect of these metabolites on cells from human endometriotic lesions. One of them, quinic acid, increased the proliferation of human endometriotic epithelial cells.
“Some metabolites such as fiber-derived short-chain fatty acids have beneficial effects; they inhibit the disease,” Dr. Kommagani said. “But maybe an amino acid derivative such as quinic acid, [may] promote disease, and these are generated because there is a gut dysbiosis.”
This statement hints at some of the possible therapeutic approaches for endometriosis, such as a high-fiber diet to promote healthy gut flora, or perhaps antibiotics to eradicate unhealthy bacteria. But as with other conditions that have been linked to dysbiosis, like inflammatory bowel disease, use of antibiotics is a bit like balancing on a tightrope; although antibiotics may remove harmful bacteria, their use may negatively affect the beneficial bacteria.
Clues in genetic variants
Krina Zondervan, DPhil, professor and head of the department of reproductive and genomic epidemiology at the University of Oxford (England), focuses on genomic, molecular, and epidemiologic approaches to understanding endometriosis.
“It’s one thing identifying risk variants and the next question is, okay, well, what do those variants actually do in terms of biology?” Dr. Zondervan said. The Oxford team next explored how the identified genetic variants affect gene expression and the proteins generated, drawing on previously collected data on gene expression from samples of human blood and endometrial and uterine tissue.
They found many of the genes implicated in the risk for endometriosis code for proteins that affect sex hormones, uterine development, transformation of healthy cells into cancerous tissue, inflammatory adhesion molecules, and factors promoting development of new blood vessels. All of that, she said, explains how a few endometrial cells making their way into the pelvis can attach to ovaries, ligaments, and peritoneal surfaces; proliferate; and acquire a blood supply to ensure their survival.
“We were able to identify a whole host of things that were likely causal to the disease,” Dr. Zondervan said. And that finding led to her next question: “Are there particular genes or areas around them that can be targeted with certain medications?”
The surprising answer was that several of the genes linked to endometriosis share pathways with clinical syndromes that often occur in women with endometriosis. Many of these are chronic pain conditions – such as migraines, headaches, and back pain – but also include inflammatory illnesses such as asthma and osteoarthritis.
As Dr. Zondervan explained, “A lot of the variance that we see for endometriosis is also experienced for low back pain and migraine, and that clearly has something to do with pain perception and pain mechanisms.”
A connection between the development of neural pathways and endometriosis has been proposed before, as researchers have found that endometriotic lesions can develop their own nerve supply, creating a direct interaction between the lesions and the central nervous system. And some clinicians have been employing treatment strategies that employ multimodal therapies – employing physical therapists, mental health practitioners, nutritionists, and pain specialists prior to and following surgical removal of lesions – to improve overall success rates of treatment.
But Dr. Zondervan’s team is the first to uncover an important clue about how this happens.
The study findings also provide solid clues to researchers about which genes and proteins to focus on for drug target discovery. In particular, the gene pathways shared by endometriosis and various pain conditions could allow for repurposing of drugs developed for other conditions for treating endometriosis, reported Dr. Zondervan.
Dr. Zondervan’s other important conclusion, echoed by Dr. Kondo and Dr. Kommagani, is that endometriosis is not one disease. Rather, it appears to be akin to cancer in terms of the heterogeneity of how it presents and the different subtypes of diseases. The Oxford study corroborated this belief, identifying certain genes that were closely associated with cystic lesions in ovaries, but failing to turn up a genetic link to other types of lesions in the pelvis long considered to be part of the spectrum of endometriosis disease.
Dr. Zondervan agreed that the potential link with Fusobacterium is a fascinating area given the critical role of inflammation in the pathogenesis of endometriosis, although she’d like to see the work replicated with larger sample sizes. “From a personal point of view, I’d be really fascinated to see how genetics interplays with this,” she added.
What’s next?
The chief limitation of human studies looking at mechanisms of endometriosis is that they are correlational: Tissue samples are collected from women with and without endometriosis, often through an invasive procedure such as laparoscopy or biopsy, at one point in time. Currently, the best tools for proving causation are animal models of endometriosis, such as the those used by Dr. Kondo’s and Dr. Kommagani’s teams.
Better diagnostic tools would solve that problem. The ultimate goal is a noninvasive test for endometriosis that would allow clinicians to follow women over time and permit the monitoring of disease progression, or regression, without the need for painful procedures. Such a diagnostic tool would facilitate rigorous longitudinal studies evaluating mechanisms of disease, as well as monitoring outcomes of clinical trials of new treatments.
Could stool samples be the answer?
The Japanese team found that women harboring Fusobacterium in endometrial tissue also had Fusobacterium in vaginal samples taken at the time of their hysterectomy – and stool samples can pick up changes in the gut microbiome.
“Vaginal swab or stool tests are probably the best and easiest for noninvasive early detection,” Dr. Kommagani said.
Spit tests for DNA would be even easier to obtain. Polygenic risk scores could be developed to estimate an individual’s risk of disease based on the number of variants, but Dr. Zondervan cautioned that not all the genes that account for endometriosis are known.
“The things that we found altogether explain about 5% of disease variability, basically – which is still not an awful lot,” she said.
Dr. Kondo’s work was supported by the Grant-in-Aid for Scientific Research, the Japan Society for the Promotion of Science, and the Research Grant of the Princess Takamatsu Cancer Research Fund. A patent method for detecting bacteria of genus Fusobacterium in order to diagnose endometriosis (WO2023/ 042714), was submitted (international publication date, March 23, 2023).
Dr. Kommagani’s work was funded, in part, by National Institutes of Health/National Institute of Child Health and Human Development grants R01HD102680, R01HD065435, and R00HD080742. He has no other conflicts of interest. Dr. Zondervan received funding from the Wellcome Trust (216767; 104036; 084766; 212904; 076113 and 085475) and also reported grants from Bayer AG, AbbVie, Volition Rx, MDNA Life Sciences, and Roche Diagnostics outside the submitted work.
Dr. Thomas is a pediatrician and epidemiologist living in Portland, Ore.
A version of this article originally appeared on Medscape.com.
In 1927, American gynecologist John Sampson published his theory of the etiology of endometriosis, postulating that retrograde flow of endometrial debris flows backward through the fallopian tubes during menses into the peritoneal cavity. Dr. Sampson’s notion remains the main paradigm today, mentioned still in recent articles on the topic, but it has a flaw: Although the theory may account for how endometrial tissue escapes the uterus, a 1984 study revealed that this phenomenon occurs in 90% of women. Why, then, do only 10% of women suffer from endometriosis?
Endometriosis describes a condition in which endometrial tissue lining the uterus is found outside the uterus. The disease can be painful, even crippling. As many as 30% of women in their reproductive years who have endometriosis are infertile as a consequence. The hallmarks of the condition are superficial peritoneal lesions of varying color, cysts in the ovaries, deeper nodules accompanied by scarring and adhesion, primarily in the pelvis but sometimes appearing outside the pelvis. The syndrome can be challenging to identify, requiring laparoscopy for definitive diagnosis.
John Sampson aside, scientists have struggled for the past century to identify the cause, or causes, of endometriosis. Hormones clearly play a role in its development, and women with endometriosis have an elevated risk of clear-cell and endometrioid ovarian cancer and autoimmune diseases. Immunodeficiency also could be to blame, if a faulty immune system fails to find and remove endometrial tissue outside of the uterus. A class of chemicals known as endocrine disruptors have been linked to endometriosis, but not definitively. Twin studies have demonstrated that as many as 50% of cases have a genetic basis, while mice with surgically induced endometriosis have been found to have a higher ratio of harmful to beneficial bacteria in their gut.
Several studies published this year point to new insights into the old mystery – with possible implications for ways to treat the disorder.
Perhaps the most surprising came out earlier this year in Science Translational Medicine, as a team of researchers in Japan reported that invasive infection by bacteria of the genus Fusobacterium may cause at least some cases of endometriosis.
Is Fusobacterium the new Helicobacter pylori?
The researchers, from Nagoya University, are the first to suggest that not only might a single bacterial genus cause endometriosis, but that antibiotic treatment could prevent progression of the disease. Using endometrial tissue obtained from 79 women undergoing hysterectomy for endometriosis and 76 women undergoing hysterectomy for other reasons (such as cervical cancer), the team started with gene expression profiling to explore differences between the two sets of samples.
They uncovered an interesting chain of cellular events: macrophages found in endometriotic lesions were secreting transforming growth factor-beta (TGF-beta). TGF-beta in turn stimulated high levels of expression of a gene called TAGLN in fibroblast cells from women with endometriosis but not in fibroblasts from women without endometriosis.
Turning on TAGLN transformed these previously inactive cells into active myofibroblasts, leading to increased proliferation, mobility, and attachment to mesothelial cells, the layer of cells that line body cavities and internal organs. In short, they identified some key players in an environment that seemed very favorable to the development of endometriosis.
“So, the question is: Why are macrophages activated?” said Yutaka Kondo, MD, PhD, the senior author of the study and a professor in the division of cancer biology at the Nagoya (Japan) University Graduate School of Medicine. “We think that there are always bacteria in the endometrium.”
After reviewing data from a previously published study, they used quantitative polymerase chain reaction to rule out one candidate, Erysipelothrix, but scored on their next attempt, identifying Fusobacterium species in endometrial tissue from 64% of the women with endometriosis, compared with fewer than 10% of the controls.
To confirm that the bacteria could cause disease and were not simply bystanders, Dr. Kondo’s team turned to a mouse model for endometriosis, in which endometrial cells are surgically removed from the uteri of mice and injected into the peritoneum of recipient mice, leading to the formation of endometriotic lesions. When mice received further injections of uterine tissue from mice that were infected with F. nucleatum, their lesions were more numerous when compared with mice that received injections of uninfected uterine tissue. Furthermore, antibiotic treatment with metronidazole or chloramphenicol immediately after surgery largely prevented progression to endometriosis, Dr. Kondo and his colleagues reported.
Dr. Kondo likened this relationship between Fusobacterium and endometriosis to that of the link between Helicobacter pylori and peptic ulcers but acknowledged that he doesn’t have all the answers.
“We need more clinical trials, and also we have to know what kind of treatment might be the most effective for the treatment of endometriosis,” Dr. Kondo said, pointing out that other therapies should still be pursued in addition to antibiotics, as not all the samples from women with endometriosis harbored Fusobacterium. “It might be possible that other mechanisms are also involved.”
Don’t write off gut microbiota
Ramakrishna Kommagani, PhD, associate professor of pathology and immunology at Baylor College of Medicine in Houston, agreed. “Endometriosis is a complex disease, which appears to be impacted by many factors, including genetic, epigenetic, and environmental factors,” Dr. Kommagani said.
A key difference between his work and Dr. Kondo’s is his focus on gut microbiota, whereas the Japanese team looked at bacteria in the vagina and endometrium. But Dr. Kommagani said he thinks both could play a role. “Maybe the vaginal microbiome might have a direct impact on disease similar to what we showed on the gut,” he said.
But he said at least part of the answer to why some women develop endometriosis may have to do more with the balance of beneficial and harmful bacteria in the gut rather than because of a single family of microbes like Fusobacterium.
Most recently, by dovetailing a mouse model for inducing endometriosis in mice treated with antibiotics to deplete their gut microbiome, Dr. Kommagani’s lab expanded on its previous work: They showed that the animals developed fewer of the typical lesions seen in endometriosis than those that did not receive antibiotics before all of the mice underwent the surgical procedure used by researchers to induce endometriosis – possibly because they had no bacteria in their gut triggering the inflammatory response required for the development of endometriosis.
But after oral feedings with fecal matter from mice without endometriosis, the microbiota-depleted rodents began developing lesions typical of endometriosis, suggesting that altered gut flora from mice with endometriosis appeared to promote the disorder. Meanwhile, their microbiota-depleted counterparts who were fed fecal matter from mice without endometriosis did not develop the typical lesions.
Dr. Kommagani’s team then compared metabolites from bacteria in stool from mice with and without endometriosis and investigated the in vitro effect of these metabolites on cells from human endometriotic lesions. One of them, quinic acid, increased the proliferation of human endometriotic epithelial cells.
“Some metabolites such as fiber-derived short-chain fatty acids have beneficial effects; they inhibit the disease,” Dr. Kommagani said. “But maybe an amino acid derivative such as quinic acid, [may] promote disease, and these are generated because there is a gut dysbiosis.”
This statement hints at some of the possible therapeutic approaches for endometriosis, such as a high-fiber diet to promote healthy gut flora, or perhaps antibiotics to eradicate unhealthy bacteria. But as with other conditions that have been linked to dysbiosis, like inflammatory bowel disease, use of antibiotics is a bit like balancing on a tightrope; although antibiotics may remove harmful bacteria, their use may negatively affect the beneficial bacteria.
Clues in genetic variants
Krina Zondervan, DPhil, professor and head of the department of reproductive and genomic epidemiology at the University of Oxford (England), focuses on genomic, molecular, and epidemiologic approaches to understanding endometriosis.
“It’s one thing identifying risk variants and the next question is, okay, well, what do those variants actually do in terms of biology?” Dr. Zondervan said. The Oxford team next explored how the identified genetic variants affect gene expression and the proteins generated, drawing on previously collected data on gene expression from samples of human blood and endometrial and uterine tissue.
They found many of the genes implicated in the risk for endometriosis code for proteins that affect sex hormones, uterine development, transformation of healthy cells into cancerous tissue, inflammatory adhesion molecules, and factors promoting development of new blood vessels. All of that, she said, explains how a few endometrial cells making their way into the pelvis can attach to ovaries, ligaments, and peritoneal surfaces; proliferate; and acquire a blood supply to ensure their survival.
“We were able to identify a whole host of things that were likely causal to the disease,” Dr. Zondervan said. And that finding led to her next question: “Are there particular genes or areas around them that can be targeted with certain medications?”
The surprising answer was that several of the genes linked to endometriosis share pathways with clinical syndromes that often occur in women with endometriosis. Many of these are chronic pain conditions – such as migraines, headaches, and back pain – but also include inflammatory illnesses such as asthma and osteoarthritis.
As Dr. Zondervan explained, “A lot of the variance that we see for endometriosis is also experienced for low back pain and migraine, and that clearly has something to do with pain perception and pain mechanisms.”
A connection between the development of neural pathways and endometriosis has been proposed before, as researchers have found that endometriotic lesions can develop their own nerve supply, creating a direct interaction between the lesions and the central nervous system. And some clinicians have been employing treatment strategies that employ multimodal therapies – employing physical therapists, mental health practitioners, nutritionists, and pain specialists prior to and following surgical removal of lesions – to improve overall success rates of treatment.
But Dr. Zondervan’s team is the first to uncover an important clue about how this happens.
The study findings also provide solid clues to researchers about which genes and proteins to focus on for drug target discovery. In particular, the gene pathways shared by endometriosis and various pain conditions could allow for repurposing of drugs developed for other conditions for treating endometriosis, reported Dr. Zondervan.
Dr. Zondervan’s other important conclusion, echoed by Dr. Kondo and Dr. Kommagani, is that endometriosis is not one disease. Rather, it appears to be akin to cancer in terms of the heterogeneity of how it presents and the different subtypes of diseases. The Oxford study corroborated this belief, identifying certain genes that were closely associated with cystic lesions in ovaries, but failing to turn up a genetic link to other types of lesions in the pelvis long considered to be part of the spectrum of endometriosis disease.
Dr. Zondervan agreed that the potential link with Fusobacterium is a fascinating area given the critical role of inflammation in the pathogenesis of endometriosis, although she’d like to see the work replicated with larger sample sizes. “From a personal point of view, I’d be really fascinated to see how genetics interplays with this,” she added.
What’s next?
The chief limitation of human studies looking at mechanisms of endometriosis is that they are correlational: Tissue samples are collected from women with and without endometriosis, often through an invasive procedure such as laparoscopy or biopsy, at one point in time. Currently, the best tools for proving causation are animal models of endometriosis, such as the those used by Dr. Kondo’s and Dr. Kommagani’s teams.
Better diagnostic tools would solve that problem. The ultimate goal is a noninvasive test for endometriosis that would allow clinicians to follow women over time and permit the monitoring of disease progression, or regression, without the need for painful procedures. Such a diagnostic tool would facilitate rigorous longitudinal studies evaluating mechanisms of disease, as well as monitoring outcomes of clinical trials of new treatments.
Could stool samples be the answer?
The Japanese team found that women harboring Fusobacterium in endometrial tissue also had Fusobacterium in vaginal samples taken at the time of their hysterectomy – and stool samples can pick up changes in the gut microbiome.
“Vaginal swab or stool tests are probably the best and easiest for noninvasive early detection,” Dr. Kommagani said.
Spit tests for DNA would be even easier to obtain. Polygenic risk scores could be developed to estimate an individual’s risk of disease based on the number of variants, but Dr. Zondervan cautioned that not all the genes that account for endometriosis are known.
“The things that we found altogether explain about 5% of disease variability, basically – which is still not an awful lot,” she said.
Dr. Kondo’s work was supported by the Grant-in-Aid for Scientific Research, the Japan Society for the Promotion of Science, and the Research Grant of the Princess Takamatsu Cancer Research Fund. A patent method for detecting bacteria of genus Fusobacterium in order to diagnose endometriosis (WO2023/ 042714), was submitted (international publication date, March 23, 2023).
Dr. Kommagani’s work was funded, in part, by National Institutes of Health/National Institute of Child Health and Human Development grants R01HD102680, R01HD065435, and R00HD080742. He has no other conflicts of interest. Dr. Zondervan received funding from the Wellcome Trust (216767; 104036; 084766; 212904; 076113 and 085475) and also reported grants from Bayer AG, AbbVie, Volition Rx, MDNA Life Sciences, and Roche Diagnostics outside the submitted work.
Dr. Thomas is a pediatrician and epidemiologist living in Portland, Ore.
A version of this article originally appeared on Medscape.com.
In 1927, American gynecologist John Sampson published his theory of the etiology of endometriosis, postulating that retrograde flow of endometrial debris flows backward through the fallopian tubes during menses into the peritoneal cavity. Dr. Sampson’s notion remains the main paradigm today, mentioned still in recent articles on the topic, but it has a flaw: Although the theory may account for how endometrial tissue escapes the uterus, a 1984 study revealed that this phenomenon occurs in 90% of women. Why, then, do only 10% of women suffer from endometriosis?
Endometriosis describes a condition in which endometrial tissue lining the uterus is found outside the uterus. The disease can be painful, even crippling. As many as 30% of women in their reproductive years who have endometriosis are infertile as a consequence. The hallmarks of the condition are superficial peritoneal lesions of varying color, cysts in the ovaries, deeper nodules accompanied by scarring and adhesion, primarily in the pelvis but sometimes appearing outside the pelvis. The syndrome can be challenging to identify, requiring laparoscopy for definitive diagnosis.
John Sampson aside, scientists have struggled for the past century to identify the cause, or causes, of endometriosis. Hormones clearly play a role in its development, and women with endometriosis have an elevated risk of clear-cell and endometrioid ovarian cancer and autoimmune diseases. Immunodeficiency also could be to blame, if a faulty immune system fails to find and remove endometrial tissue outside of the uterus. A class of chemicals known as endocrine disruptors have been linked to endometriosis, but not definitively. Twin studies have demonstrated that as many as 50% of cases have a genetic basis, while mice with surgically induced endometriosis have been found to have a higher ratio of harmful to beneficial bacteria in their gut.
Several studies published this year point to new insights into the old mystery – with possible implications for ways to treat the disorder.
Perhaps the most surprising came out earlier this year in Science Translational Medicine, as a team of researchers in Japan reported that invasive infection by bacteria of the genus Fusobacterium may cause at least some cases of endometriosis.
Is Fusobacterium the new Helicobacter pylori?
The researchers, from Nagoya University, are the first to suggest that not only might a single bacterial genus cause endometriosis, but that antibiotic treatment could prevent progression of the disease. Using endometrial tissue obtained from 79 women undergoing hysterectomy for endometriosis and 76 women undergoing hysterectomy for other reasons (such as cervical cancer), the team started with gene expression profiling to explore differences between the two sets of samples.
They uncovered an interesting chain of cellular events: macrophages found in endometriotic lesions were secreting transforming growth factor-beta (TGF-beta). TGF-beta in turn stimulated high levels of expression of a gene called TAGLN in fibroblast cells from women with endometriosis but not in fibroblasts from women without endometriosis.
Turning on TAGLN transformed these previously inactive cells into active myofibroblasts, leading to increased proliferation, mobility, and attachment to mesothelial cells, the layer of cells that line body cavities and internal organs. In short, they identified some key players in an environment that seemed very favorable to the development of endometriosis.
“So, the question is: Why are macrophages activated?” said Yutaka Kondo, MD, PhD, the senior author of the study and a professor in the division of cancer biology at the Nagoya (Japan) University Graduate School of Medicine. “We think that there are always bacteria in the endometrium.”
After reviewing data from a previously published study, they used quantitative polymerase chain reaction to rule out one candidate, Erysipelothrix, but scored on their next attempt, identifying Fusobacterium species in endometrial tissue from 64% of the women with endometriosis, compared with fewer than 10% of the controls.
To confirm that the bacteria could cause disease and were not simply bystanders, Dr. Kondo’s team turned to a mouse model for endometriosis, in which endometrial cells are surgically removed from the uteri of mice and injected into the peritoneum of recipient mice, leading to the formation of endometriotic lesions. When mice received further injections of uterine tissue from mice that were infected with F. nucleatum, their lesions were more numerous when compared with mice that received injections of uninfected uterine tissue. Furthermore, antibiotic treatment with metronidazole or chloramphenicol immediately after surgery largely prevented progression to endometriosis, Dr. Kondo and his colleagues reported.
Dr. Kondo likened this relationship between Fusobacterium and endometriosis to that of the link between Helicobacter pylori and peptic ulcers but acknowledged that he doesn’t have all the answers.
“We need more clinical trials, and also we have to know what kind of treatment might be the most effective for the treatment of endometriosis,” Dr. Kondo said, pointing out that other therapies should still be pursued in addition to antibiotics, as not all the samples from women with endometriosis harbored Fusobacterium. “It might be possible that other mechanisms are also involved.”
Don’t write off gut microbiota
Ramakrishna Kommagani, PhD, associate professor of pathology and immunology at Baylor College of Medicine in Houston, agreed. “Endometriosis is a complex disease, which appears to be impacted by many factors, including genetic, epigenetic, and environmental factors,” Dr. Kommagani said.
A key difference between his work and Dr. Kondo’s is his focus on gut microbiota, whereas the Japanese team looked at bacteria in the vagina and endometrium. But Dr. Kommagani said he thinks both could play a role. “Maybe the vaginal microbiome might have a direct impact on disease similar to what we showed on the gut,” he said.
But he said at least part of the answer to why some women develop endometriosis may have to do more with the balance of beneficial and harmful bacteria in the gut rather than because of a single family of microbes like Fusobacterium.
Most recently, by dovetailing a mouse model for inducing endometriosis in mice treated with antibiotics to deplete their gut microbiome, Dr. Kommagani’s lab expanded on its previous work: They showed that the animals developed fewer of the typical lesions seen in endometriosis than those that did not receive antibiotics before all of the mice underwent the surgical procedure used by researchers to induce endometriosis – possibly because they had no bacteria in their gut triggering the inflammatory response required for the development of endometriosis.
But after oral feedings with fecal matter from mice without endometriosis, the microbiota-depleted rodents began developing lesions typical of endometriosis, suggesting that altered gut flora from mice with endometriosis appeared to promote the disorder. Meanwhile, their microbiota-depleted counterparts who were fed fecal matter from mice without endometriosis did not develop the typical lesions.
Dr. Kommagani’s team then compared metabolites from bacteria in stool from mice with and without endometriosis and investigated the in vitro effect of these metabolites on cells from human endometriotic lesions. One of them, quinic acid, increased the proliferation of human endometriotic epithelial cells.
“Some metabolites such as fiber-derived short-chain fatty acids have beneficial effects; they inhibit the disease,” Dr. Kommagani said. “But maybe an amino acid derivative such as quinic acid, [may] promote disease, and these are generated because there is a gut dysbiosis.”
This statement hints at some of the possible therapeutic approaches for endometriosis, such as a high-fiber diet to promote healthy gut flora, or perhaps antibiotics to eradicate unhealthy bacteria. But as with other conditions that have been linked to dysbiosis, like inflammatory bowel disease, use of antibiotics is a bit like balancing on a tightrope; although antibiotics may remove harmful bacteria, their use may negatively affect the beneficial bacteria.
Clues in genetic variants
Krina Zondervan, DPhil, professor and head of the department of reproductive and genomic epidemiology at the University of Oxford (England), focuses on genomic, molecular, and epidemiologic approaches to understanding endometriosis.
“It’s one thing identifying risk variants and the next question is, okay, well, what do those variants actually do in terms of biology?” Dr. Zondervan said. The Oxford team next explored how the identified genetic variants affect gene expression and the proteins generated, drawing on previously collected data on gene expression from samples of human blood and endometrial and uterine tissue.
They found many of the genes implicated in the risk for endometriosis code for proteins that affect sex hormones, uterine development, transformation of healthy cells into cancerous tissue, inflammatory adhesion molecules, and factors promoting development of new blood vessels. All of that, she said, explains how a few endometrial cells making their way into the pelvis can attach to ovaries, ligaments, and peritoneal surfaces; proliferate; and acquire a blood supply to ensure their survival.
“We were able to identify a whole host of things that were likely causal to the disease,” Dr. Zondervan said. And that finding led to her next question: “Are there particular genes or areas around them that can be targeted with certain medications?”
The surprising answer was that several of the genes linked to endometriosis share pathways with clinical syndromes that often occur in women with endometriosis. Many of these are chronic pain conditions – such as migraines, headaches, and back pain – but also include inflammatory illnesses such as asthma and osteoarthritis.
As Dr. Zondervan explained, “A lot of the variance that we see for endometriosis is also experienced for low back pain and migraine, and that clearly has something to do with pain perception and pain mechanisms.”
A connection between the development of neural pathways and endometriosis has been proposed before, as researchers have found that endometriotic lesions can develop their own nerve supply, creating a direct interaction between the lesions and the central nervous system. And some clinicians have been employing treatment strategies that employ multimodal therapies – employing physical therapists, mental health practitioners, nutritionists, and pain specialists prior to and following surgical removal of lesions – to improve overall success rates of treatment.
But Dr. Zondervan’s team is the first to uncover an important clue about how this happens.
The study findings also provide solid clues to researchers about which genes and proteins to focus on for drug target discovery. In particular, the gene pathways shared by endometriosis and various pain conditions could allow for repurposing of drugs developed for other conditions for treating endometriosis, reported Dr. Zondervan.
Dr. Zondervan’s other important conclusion, echoed by Dr. Kondo and Dr. Kommagani, is that endometriosis is not one disease. Rather, it appears to be akin to cancer in terms of the heterogeneity of how it presents and the different subtypes of diseases. The Oxford study corroborated this belief, identifying certain genes that were closely associated with cystic lesions in ovaries, but failing to turn up a genetic link to other types of lesions in the pelvis long considered to be part of the spectrum of endometriosis disease.
Dr. Zondervan agreed that the potential link with Fusobacterium is a fascinating area given the critical role of inflammation in the pathogenesis of endometriosis, although she’d like to see the work replicated with larger sample sizes. “From a personal point of view, I’d be really fascinated to see how genetics interplays with this,” she added.
What’s next?
The chief limitation of human studies looking at mechanisms of endometriosis is that they are correlational: Tissue samples are collected from women with and without endometriosis, often through an invasive procedure such as laparoscopy or biopsy, at one point in time. Currently, the best tools for proving causation are animal models of endometriosis, such as the those used by Dr. Kondo’s and Dr. Kommagani’s teams.
Better diagnostic tools would solve that problem. The ultimate goal is a noninvasive test for endometriosis that would allow clinicians to follow women over time and permit the monitoring of disease progression, or regression, without the need for painful procedures. Such a diagnostic tool would facilitate rigorous longitudinal studies evaluating mechanisms of disease, as well as monitoring outcomes of clinical trials of new treatments.
Could stool samples be the answer?
The Japanese team found that women harboring Fusobacterium in endometrial tissue also had Fusobacterium in vaginal samples taken at the time of their hysterectomy – and stool samples can pick up changes in the gut microbiome.
“Vaginal swab or stool tests are probably the best and easiest for noninvasive early detection,” Dr. Kommagani said.
Spit tests for DNA would be even easier to obtain. Polygenic risk scores could be developed to estimate an individual’s risk of disease based on the number of variants, but Dr. Zondervan cautioned that not all the genes that account for endometriosis are known.
“The things that we found altogether explain about 5% of disease variability, basically – which is still not an awful lot,” she said.
Dr. Kondo’s work was supported by the Grant-in-Aid for Scientific Research, the Japan Society for the Promotion of Science, and the Research Grant of the Princess Takamatsu Cancer Research Fund. A patent method for detecting bacteria of genus Fusobacterium in order to diagnose endometriosis (WO2023/ 042714), was submitted (international publication date, March 23, 2023).
Dr. Kommagani’s work was funded, in part, by National Institutes of Health/National Institute of Child Health and Human Development grants R01HD102680, R01HD065435, and R00HD080742. He has no other conflicts of interest. Dr. Zondervan received funding from the Wellcome Trust (216767; 104036; 084766; 212904; 076113 and 085475) and also reported grants from Bayer AG, AbbVie, Volition Rx, MDNA Life Sciences, and Roche Diagnostics outside the submitted work.
Dr. Thomas is a pediatrician and epidemiologist living in Portland, Ore.
A version of this article originally appeared on Medscape.com.
Thirty-three percent of type 1 diabetes patients insulin free with stem cells
SAN DIEGO – An investigational allogeneic stem cell–derived pancreatic islet cell replacement therapy (VX-880, Vertex Pharmaceuticals) continues to show promise as a treatment for type 1 diabetes, according to the latest data, from six patients thus far.
Two of the six are insulin-independent beyond 1 year after receiving the VX-880 infusions, and three others who received them more recently are on a similar trajectory. One dropped out because of reasons unrelated to the therapy. The remaining five are continuing to receive immunosuppressive treatment to prevent rejection of the islets. The six all had undetectable insulin secretion, impaired hypoglycemic awareness, and severe hypoglycemia as the criterion to enter the phase 1/2 study.
“These new findings demonstrate the potential of stem cell–derived islets as a future treatment for patients with type 1 diabetes, signaling a new era that could potentially remove the need for exogenously administered insulin to achieve glycemic control,” said lead investigator Trevor W. Reichman, MD, PhD, surgical director of Pancreas and Islet Cell Transplantation at the University of Toronto.
Dr. Reichman presented the data at the annual scientific sessions of the American Diabetes Association, as an update to the report of the first two patients at last year’s ADA meeting. “We are hopeful that this first-of-its-kind research could be a game-changer for the treatment of type 1 diabetes,” he emphasized.
Co-investigator Maria Cristina Nostro, PhD, senior scientist at McEwen Stem Cell Institute, Toronto, told this news organization: “The clinical trial data are extremely exciting ... I think what was very beautiful is the glucose tolerance test where the insulin secretion was almost like a person without type 1 diabetes. For someone who is in the lab doing basic science research ... all the work we’ve put into this, it’s a labor of love. We’ve been trying to generate the cells for so long, and now to see this, it’s fantastic.”
Two meet primary endpoint, three more on the right path
The six patients had a mean age of 44 years and mean 23 years’ diabetes duration. Three each were male and female. Their mean baseline A1c was 8.1%, and fasting C-peptide was undetectable. They had experienced a mean of 3.3 severe hypoglycemia episodes in the year prior to receiving the infusion, which was delivered to the portal vein similarly to the procedure with cadaveric donor islets, Dr. Reichman said.
The first two patients, including the one who dropped out, received half target doses of VX-880 (trial part A), while the rest, enrolled sequentially (part B), were each administered the full target dose of VX-880 given as a single infusion.
Induction with anti-thymocyte globulin and maintenance immunosuppressants, tacrolimus/sirolimus, was used to protect the cells from the recipient’s immune system. After the infusion, all six participants had C-peptide production, reduction in A1c despite reduced insulin use, and no severe hypoglycemia episodes from day 90 onwards.
Both participants with at least a year of follow-up met the criteria for the primary endpoint of A1c less than 7% with no severe hypoglycemic episodes. The first participant had an A1c of 5.3% at month 21, and the second 6.0% at 12 months. Both had sustained glucose-responsive insulin production with a mixed-meal tolerance test and exceeded the ADA target of more than 70% time-in blood glucose range assessed with continuous glucose monitoring.
Safety: No major concerns thus far
Among all six, adverse events included elevations in the liver enzyme transaminase, occurring shortly after VX-880 infusion that were transient and resolved. No serious adverse events were considered related to the therapy.
Regarding safety, Dr. Nostro said, “With this trial, I have no concerns, because they’re using immunosuppression, so should anything go bad, you remove immunosuppression and the cells would be destroyed by the immune system. So it’s a perfect trial in a way.”
However, she noted, “Moving forward, as we develop something that will be genetically modified ... I think this is the future, because if you’re going to treat people with type 1 diabetes, we have to eliminate the immune suppression. I think the concern would be making sure the genetically modified cells are safe.”
Dr. Nostro, who gave an introductory presentation at the beginning of the symposium where the VX-880 data were presented, explained that in a current trial of genetically modified cells, “they’re placing the product inside a device so that the cells would be retrievable. It might not be perfect, but at least it’s going to tell us whether the genetically modified product is safe, which I think is what we need to use.”
In her talk, Dr. Nostro also summarized ongoing work in this field involving efforts to improve the generation of stem cell–derived islets with no “off target” non-beta cells to ensure consistency, optimization of engraftment, and elimination of immunosuppression. “[VX-880] is the beginning. This is the first product that’s going to be in the clinic, but I can imagine how 5, 10 years from now we will have different and more enhanced solutions for type 1 diabetes and who knows, maybe even for type 2.”
Based on the data so far, the VX-880 trial is now moving to part C, in which 10 concurrently enrolled participants will receive the full target dose of the product. The trial, previously exclusively in the United States, has now expanded to additional sites in Norway, Switzerland, and the Netherlands.
The study was funded by Vertex. Dr. Reichman is on advisory boards for Vertex and Sernova. Dr. Nostro was a consultant for Sigilon Therapeutics from 2018-2022, currently receives research support from Universal Cells, and has a patent licensed to Sernova.
A version of this article originally appeared on Medscape.com.
SAN DIEGO – An investigational allogeneic stem cell–derived pancreatic islet cell replacement therapy (VX-880, Vertex Pharmaceuticals) continues to show promise as a treatment for type 1 diabetes, according to the latest data, from six patients thus far.
Two of the six are insulin-independent beyond 1 year after receiving the VX-880 infusions, and three others who received them more recently are on a similar trajectory. One dropped out because of reasons unrelated to the therapy. The remaining five are continuing to receive immunosuppressive treatment to prevent rejection of the islets. The six all had undetectable insulin secretion, impaired hypoglycemic awareness, and severe hypoglycemia as the criterion to enter the phase 1/2 study.
“These new findings demonstrate the potential of stem cell–derived islets as a future treatment for patients with type 1 diabetes, signaling a new era that could potentially remove the need for exogenously administered insulin to achieve glycemic control,” said lead investigator Trevor W. Reichman, MD, PhD, surgical director of Pancreas and Islet Cell Transplantation at the University of Toronto.
Dr. Reichman presented the data at the annual scientific sessions of the American Diabetes Association, as an update to the report of the first two patients at last year’s ADA meeting. “We are hopeful that this first-of-its-kind research could be a game-changer for the treatment of type 1 diabetes,” he emphasized.
Co-investigator Maria Cristina Nostro, PhD, senior scientist at McEwen Stem Cell Institute, Toronto, told this news organization: “The clinical trial data are extremely exciting ... I think what was very beautiful is the glucose tolerance test where the insulin secretion was almost like a person without type 1 diabetes. For someone who is in the lab doing basic science research ... all the work we’ve put into this, it’s a labor of love. We’ve been trying to generate the cells for so long, and now to see this, it’s fantastic.”
Two meet primary endpoint, three more on the right path
The six patients had a mean age of 44 years and mean 23 years’ diabetes duration. Three each were male and female. Their mean baseline A1c was 8.1%, and fasting C-peptide was undetectable. They had experienced a mean of 3.3 severe hypoglycemia episodes in the year prior to receiving the infusion, which was delivered to the portal vein similarly to the procedure with cadaveric donor islets, Dr. Reichman said.
The first two patients, including the one who dropped out, received half target doses of VX-880 (trial part A), while the rest, enrolled sequentially (part B), were each administered the full target dose of VX-880 given as a single infusion.
Induction with anti-thymocyte globulin and maintenance immunosuppressants, tacrolimus/sirolimus, was used to protect the cells from the recipient’s immune system. After the infusion, all six participants had C-peptide production, reduction in A1c despite reduced insulin use, and no severe hypoglycemia episodes from day 90 onwards.
Both participants with at least a year of follow-up met the criteria for the primary endpoint of A1c less than 7% with no severe hypoglycemic episodes. The first participant had an A1c of 5.3% at month 21, and the second 6.0% at 12 months. Both had sustained glucose-responsive insulin production with a mixed-meal tolerance test and exceeded the ADA target of more than 70% time-in blood glucose range assessed with continuous glucose monitoring.
Safety: No major concerns thus far
Among all six, adverse events included elevations in the liver enzyme transaminase, occurring shortly after VX-880 infusion that were transient and resolved. No serious adverse events were considered related to the therapy.
Regarding safety, Dr. Nostro said, “With this trial, I have no concerns, because they’re using immunosuppression, so should anything go bad, you remove immunosuppression and the cells would be destroyed by the immune system. So it’s a perfect trial in a way.”
However, she noted, “Moving forward, as we develop something that will be genetically modified ... I think this is the future, because if you’re going to treat people with type 1 diabetes, we have to eliminate the immune suppression. I think the concern would be making sure the genetically modified cells are safe.”
Dr. Nostro, who gave an introductory presentation at the beginning of the symposium where the VX-880 data were presented, explained that in a current trial of genetically modified cells, “they’re placing the product inside a device so that the cells would be retrievable. It might not be perfect, but at least it’s going to tell us whether the genetically modified product is safe, which I think is what we need to use.”
In her talk, Dr. Nostro also summarized ongoing work in this field involving efforts to improve the generation of stem cell–derived islets with no “off target” non-beta cells to ensure consistency, optimization of engraftment, and elimination of immunosuppression. “[VX-880] is the beginning. This is the first product that’s going to be in the clinic, but I can imagine how 5, 10 years from now we will have different and more enhanced solutions for type 1 diabetes and who knows, maybe even for type 2.”
Based on the data so far, the VX-880 trial is now moving to part C, in which 10 concurrently enrolled participants will receive the full target dose of the product. The trial, previously exclusively in the United States, has now expanded to additional sites in Norway, Switzerland, and the Netherlands.
The study was funded by Vertex. Dr. Reichman is on advisory boards for Vertex and Sernova. Dr. Nostro was a consultant for Sigilon Therapeutics from 2018-2022, currently receives research support from Universal Cells, and has a patent licensed to Sernova.
A version of this article originally appeared on Medscape.com.
SAN DIEGO – An investigational allogeneic stem cell–derived pancreatic islet cell replacement therapy (VX-880, Vertex Pharmaceuticals) continues to show promise as a treatment for type 1 diabetes, according to the latest data, from six patients thus far.
Two of the six are insulin-independent beyond 1 year after receiving the VX-880 infusions, and three others who received them more recently are on a similar trajectory. One dropped out because of reasons unrelated to the therapy. The remaining five are continuing to receive immunosuppressive treatment to prevent rejection of the islets. The six all had undetectable insulin secretion, impaired hypoglycemic awareness, and severe hypoglycemia as the criterion to enter the phase 1/2 study.
“These new findings demonstrate the potential of stem cell–derived islets as a future treatment for patients with type 1 diabetes, signaling a new era that could potentially remove the need for exogenously administered insulin to achieve glycemic control,” said lead investigator Trevor W. Reichman, MD, PhD, surgical director of Pancreas and Islet Cell Transplantation at the University of Toronto.
Dr. Reichman presented the data at the annual scientific sessions of the American Diabetes Association, as an update to the report of the first two patients at last year’s ADA meeting. “We are hopeful that this first-of-its-kind research could be a game-changer for the treatment of type 1 diabetes,” he emphasized.
Co-investigator Maria Cristina Nostro, PhD, senior scientist at McEwen Stem Cell Institute, Toronto, told this news organization: “The clinical trial data are extremely exciting ... I think what was very beautiful is the glucose tolerance test where the insulin secretion was almost like a person without type 1 diabetes. For someone who is in the lab doing basic science research ... all the work we’ve put into this, it’s a labor of love. We’ve been trying to generate the cells for so long, and now to see this, it’s fantastic.”
Two meet primary endpoint, three more on the right path
The six patients had a mean age of 44 years and mean 23 years’ diabetes duration. Three each were male and female. Their mean baseline A1c was 8.1%, and fasting C-peptide was undetectable. They had experienced a mean of 3.3 severe hypoglycemia episodes in the year prior to receiving the infusion, which was delivered to the portal vein similarly to the procedure with cadaveric donor islets, Dr. Reichman said.
The first two patients, including the one who dropped out, received half target doses of VX-880 (trial part A), while the rest, enrolled sequentially (part B), were each administered the full target dose of VX-880 given as a single infusion.
Induction with anti-thymocyte globulin and maintenance immunosuppressants, tacrolimus/sirolimus, was used to protect the cells from the recipient’s immune system. After the infusion, all six participants had C-peptide production, reduction in A1c despite reduced insulin use, and no severe hypoglycemia episodes from day 90 onwards.
Both participants with at least a year of follow-up met the criteria for the primary endpoint of A1c less than 7% with no severe hypoglycemic episodes. The first participant had an A1c of 5.3% at month 21, and the second 6.0% at 12 months. Both had sustained glucose-responsive insulin production with a mixed-meal tolerance test and exceeded the ADA target of more than 70% time-in blood glucose range assessed with continuous glucose monitoring.
Safety: No major concerns thus far
Among all six, adverse events included elevations in the liver enzyme transaminase, occurring shortly after VX-880 infusion that were transient and resolved. No serious adverse events were considered related to the therapy.
Regarding safety, Dr. Nostro said, “With this trial, I have no concerns, because they’re using immunosuppression, so should anything go bad, you remove immunosuppression and the cells would be destroyed by the immune system. So it’s a perfect trial in a way.”
However, she noted, “Moving forward, as we develop something that will be genetically modified ... I think this is the future, because if you’re going to treat people with type 1 diabetes, we have to eliminate the immune suppression. I think the concern would be making sure the genetically modified cells are safe.”
Dr. Nostro, who gave an introductory presentation at the beginning of the symposium where the VX-880 data were presented, explained that in a current trial of genetically modified cells, “they’re placing the product inside a device so that the cells would be retrievable. It might not be perfect, but at least it’s going to tell us whether the genetically modified product is safe, which I think is what we need to use.”
In her talk, Dr. Nostro also summarized ongoing work in this field involving efforts to improve the generation of stem cell–derived islets with no “off target” non-beta cells to ensure consistency, optimization of engraftment, and elimination of immunosuppression. “[VX-880] is the beginning. This is the first product that’s going to be in the clinic, but I can imagine how 5, 10 years from now we will have different and more enhanced solutions for type 1 diabetes and who knows, maybe even for type 2.”
Based on the data so far, the VX-880 trial is now moving to part C, in which 10 concurrently enrolled participants will receive the full target dose of the product. The trial, previously exclusively in the United States, has now expanded to additional sites in Norway, Switzerland, and the Netherlands.
The study was funded by Vertex. Dr. Reichman is on advisory boards for Vertex and Sernova. Dr. Nostro was a consultant for Sigilon Therapeutics from 2018-2022, currently receives research support from Universal Cells, and has a patent licensed to Sernova.
A version of this article originally appeared on Medscape.com.
AT ADA 2023
The invisible effect medical notes could have on care
In the mid-1990s, when Somnath Saha was a medical resident at the University of California, San Francisco, School of Medicine, he came across a cluster of studies showing that Black people with cardiovascular disease were treated less aggressively, compared with White people. The findings were “appalling” to the young physician who describes himself as a “Brown kid from suburban St. Louis, Missouri.”
Dr. Saha had experienced racism growing up, but was surprised to see such clear signs of inequity within the field of medicine. “There was an injustice happening in my own backyard,” he said.
Indeed, bias towards Black patients can be challenging because many doctors either don’t realize their biases or won’t admit to them. Dr. Saha, now a professor of medicine at Johns Hopkins University, likens implicit bias – unconscious judgments that can affect behavior – to “an invisible force.”
While numerous studies have found evidence of racial discrimination in medicine through patient reports, less is known about how implicit bias shows up in medical records, and how stigmatizing language in patient notes can affect the care that Black patients receive.
That’s part of the reason why, about 7 years ago, Dr. Saha began poring through medical records. For him, they offered a window into doctors’ feelings about their patients.
As part of his latest research, Dr. Saha’s team examined the records of nearly 19,000 patients, paying particular attention to negative descriptions that may influence a clinician’s decision-making. The data, which were recently presented at the 2023 American Association for the Advancement of Science annual meeting, aren’t yet published, but it suggests what researchers have long speculated: The notes provide, at times, a surprisingly candid view of how patients are perceived by doctors, and how their race may affect treatment.
The study adds to a concerning body of literature that explores how racial bias manifests in health care. Researchers like Dr. Saha are interested in how such prejudice leaves a paper trail, which can then reinforce negative stereotypes. Because medical notes get passed between physicians, Dr. Saha’s research suggests they can affect the health of Black patients down the line.
“The medical record is like a rap sheet, it stays with you,” Dr. Saha said, adding that “these things that we say about patients get eternalized.”
Research has long shown that Black patients experience worse health outcomes, compared with White patients, in part because of biased medical care. Black women, for example, are three times more likely to die from pregnancy-related complications, compared with White women. And Black patients often report feeling like physicians don’t listen to their needs or don’t believe their concerns.
Studies appear to back that up. Last year, researchers at the University of Washington found that non-Hispanic White children who went to the emergency room for migraines were more likely to receive pain medications, compared with children of color – even though the two groups reported similar pain scores. Other studies echo similar results for adults as well.
While Michael Sun, a resident physician at the University of Chicago, knew about such health disparities, by his own admission, he was naive about the biases in medical records. At that time, Dr. Sun had “no experience in the medical record, in documentation, or in physician language and culture,” he said.
But in Dr. Sun’s first year of medical school, his professor shared the story of a longtime patient, whom she had referred to an outside specialist. In his recollection, the professor regarded her patient in kind terms, having worked with her for some time to treat a chronic illness. But when she got the specialist’s notes back, she was confused by the description of her patient: Terms like “really difficult,” “noncompliant,” and “uninterested in their health.” This was not the patient she remembered.
“This, as a first-year medical student, really shocked me because I had taken at face value that any words used in notes were true, were valid, or rightfully used,” said Dr. Sun. “I realized all the ways that bias, untold stories, and unknown context may change the way that we view our patients.”
Like Dr. Saha, Dr. Sun became interested in how bias influenced the relationship between doctor and patient, and how these interactions were memorialized in the medical record. In a study published last year, he and his colleagues looked at more than 40,000 medical notes from 18,459 patients. Researchers first manually combed through the notes, then used this information to teach a machine learning algorithm to interpret the connotations of words. Compared with White patients, Black patients were about 2.5 times more likely to be described negatively, with terms like “challenging,” “angry,” and “noncompliant.”
Dr. Saha has used similar methodology – and found similar results – in his own research. For the study presented at the AAAS meeting, his team first read through more than 100,000 medical notes to identify language their team considered to be disparaging – which they chose based on a list of words and phrases from prior research. They then used machine learning to find those terms in medical notes, taking care to ensure context was considered. For example, if the word “aggressive” was used to describe a treatment plan, it was excluded from their analysis. But if “aggressive” was used to describe the patient, it was included.
Dr. Saha pointed to three categories of stigmatizing language that were the most pronounced: expressing doubt or disbelief in what the patient said, such as reporting they “claimed” to experience pain; insinuating that the patient was confrontational, using words like “belligerent” or combative;” and suggesting a patient was not cooperating with a doctor’s orders by saying they “refused” medical advice.
“We’ve known for some time that in health care we sometimes use language that can be confusing or even insulting,” Matthew Wynia, director of the Center for Bioethics and Humanities at the University of Colorado at Denver, Aurora, wrote in an email to Undark. But he noted that research such as Dr. Saha’s has drawn attention to a previously overlooked issue. Describing a patient as “noncompliant” with medications, he said, “makes it sound like the patient is intentionally refusing to follow advice when, in fact, there are many reasons why people might not be able to follow our advice and intentional refusal isn’t even a very common one.”
Dr. Saha noted that, if a patient isn’t taking their medication, it’s important that doctors note that, so that the next physician doesn’t overprescribe them. But the concern, he said, is whether doctors are using these terms appropriately and for the right reasons because of the implications they have for patients.
If a doctor portrays their patient negatively, Dr. Saha said, it can “trigger the next clinician to read them and formulate a potentially negative opinion about that patient” before they’ve even had a chance to interact.
Still, stigmatizing language is only one small piece of the puzzle. What also matters, Dr. Saha said, is how those words can have an impact on care. In prior work, Dr. Saha has shown how implicit and, in some cases, explicit bias, affects a patient’s treatment recommendations.
In a 2018 study, Dr. Saha, along with his wife, Mary Catherine Beach – also a professor at Johns Hopkins University – combed through reports of patients with sickle cell anemia. Their team focused on that particular population since sickle cell patients are some of the most stigmatized in the health care system: Most patients are Black and many require regular doses of opioids for pain management.
In the notes, they found numerous examples of details that were irrelevant to patients’ health concerns: phrases like “girlfriend requests bus token,” “cursing at nurse,” “girlfriend on bed with shoes on,” and “narcotic dependent.”
Dr. Saha and Dr. Beach wanted to see how these remarks might influence a physician’s treatment recommendations, so they used vignettes they had found in the medical records of sickle cell patients. They showed either a vignette which had described patients negatively, or one that was edited with neutral language. Then they asked medical students and residents about the dose of pain medication they would hypothetically recommend. Dr. Beach said that the purpose was to see how what she called “dog whistles about social class or race or something that would make the person seem less educated” would impact treatment recommendations.
The study found that medical notes with stigmatizing language were associated with “less aggressive management of the patient’s pain.” Doctors who read the stigmatizing language chart notes prescribed less pain medication to patients even in cases when they commented that their pain was a 10 out of 10.
“The fact that we were able to show that this bias transmits to the next doctor has been the thing that I think motivates doctors to take it seriously,” said Dr. Beach.
Pain management has become a focal point for researchers because many of the most glaring racial tropes about patient care have revolved around pain. In 2016, a study conducted at the University of Virginia found that half of the 418 medical students and residents surveyed endorsed false beliefs about Black patients. For example, that “Blacks’ nerve endings are less sensitive than whites” and “Blacks’ skin is thicker than whites.” What’s more, those who endorsed these false beliefs also rated Black patients’ pain as lower than White patients’.
Antoinette M. Schoenthaler, a professor of population health and medicine at New York University and associate director of research at the school’s Institute for Excellence in Health Equity, said that disparities in pain management are pervasive and widespread across the medical profession. They seep into treatments for sickle cell anemia, but also prenatal care. As a result, she said, Black patients across the board are often fearful of attending appointments.
“Patients of color go into an appointment with feelings of heightened anxiety because they’re expecting mistreatment,” said Dr. Schoenthaler. “We’ve seen minoritized patients have higher blood pressure in the context of a clinical visit because of these expectations of anxiety and fear, and disappointment.”
Disparities in health care between Black and White patients is a complex issue – one which can’t be solved by addressing medical records alone. But, for researchers like Dr. Saha, Dr. Beach, and Dr. Sun, they can offer a road map that outlines where differences in care begin. The words a clinician uses sets the path for how a patient may be treated in the future.
One way to combat implicit bias, Dr. Saha suggested, is to use an algorithm that identifies stigmatizing language to “give hospital departments or clinicians report cards on how much of this language that they’re using.” By benchmarking averages against one another, clinicians could know if they’re using stigmatizing language at an above average rate. This is something he is considering for future research.
When clinicians are made aware of their biases – when the unconscious becomes conscious – Dr. Saha told Undark that he’s optimistic they’ll work to change them: “We’re using language that we’ve used forever without realizing the potential impact that it has on patient care.”
This article originated on Undark. A version of this article appeared on Medscape.com.
In the mid-1990s, when Somnath Saha was a medical resident at the University of California, San Francisco, School of Medicine, he came across a cluster of studies showing that Black people with cardiovascular disease were treated less aggressively, compared with White people. The findings were “appalling” to the young physician who describes himself as a “Brown kid from suburban St. Louis, Missouri.”
Dr. Saha had experienced racism growing up, but was surprised to see such clear signs of inequity within the field of medicine. “There was an injustice happening in my own backyard,” he said.
Indeed, bias towards Black patients can be challenging because many doctors either don’t realize their biases or won’t admit to them. Dr. Saha, now a professor of medicine at Johns Hopkins University, likens implicit bias – unconscious judgments that can affect behavior – to “an invisible force.”
While numerous studies have found evidence of racial discrimination in medicine through patient reports, less is known about how implicit bias shows up in medical records, and how stigmatizing language in patient notes can affect the care that Black patients receive.
That’s part of the reason why, about 7 years ago, Dr. Saha began poring through medical records. For him, they offered a window into doctors’ feelings about their patients.
As part of his latest research, Dr. Saha’s team examined the records of nearly 19,000 patients, paying particular attention to negative descriptions that may influence a clinician’s decision-making. The data, which were recently presented at the 2023 American Association for the Advancement of Science annual meeting, aren’t yet published, but it suggests what researchers have long speculated: The notes provide, at times, a surprisingly candid view of how patients are perceived by doctors, and how their race may affect treatment.
The study adds to a concerning body of literature that explores how racial bias manifests in health care. Researchers like Dr. Saha are interested in how such prejudice leaves a paper trail, which can then reinforce negative stereotypes. Because medical notes get passed between physicians, Dr. Saha’s research suggests they can affect the health of Black patients down the line.
“The medical record is like a rap sheet, it stays with you,” Dr. Saha said, adding that “these things that we say about patients get eternalized.”
Research has long shown that Black patients experience worse health outcomes, compared with White patients, in part because of biased medical care. Black women, for example, are three times more likely to die from pregnancy-related complications, compared with White women. And Black patients often report feeling like physicians don’t listen to their needs or don’t believe their concerns.
Studies appear to back that up. Last year, researchers at the University of Washington found that non-Hispanic White children who went to the emergency room for migraines were more likely to receive pain medications, compared with children of color – even though the two groups reported similar pain scores. Other studies echo similar results for adults as well.
While Michael Sun, a resident physician at the University of Chicago, knew about such health disparities, by his own admission, he was naive about the biases in medical records. At that time, Dr. Sun had “no experience in the medical record, in documentation, or in physician language and culture,” he said.
But in Dr. Sun’s first year of medical school, his professor shared the story of a longtime patient, whom she had referred to an outside specialist. In his recollection, the professor regarded her patient in kind terms, having worked with her for some time to treat a chronic illness. But when she got the specialist’s notes back, she was confused by the description of her patient: Terms like “really difficult,” “noncompliant,” and “uninterested in their health.” This was not the patient she remembered.
“This, as a first-year medical student, really shocked me because I had taken at face value that any words used in notes were true, were valid, or rightfully used,” said Dr. Sun. “I realized all the ways that bias, untold stories, and unknown context may change the way that we view our patients.”
Like Dr. Saha, Dr. Sun became interested in how bias influenced the relationship between doctor and patient, and how these interactions were memorialized in the medical record. In a study published last year, he and his colleagues looked at more than 40,000 medical notes from 18,459 patients. Researchers first manually combed through the notes, then used this information to teach a machine learning algorithm to interpret the connotations of words. Compared with White patients, Black patients were about 2.5 times more likely to be described negatively, with terms like “challenging,” “angry,” and “noncompliant.”
Dr. Saha has used similar methodology – and found similar results – in his own research. For the study presented at the AAAS meeting, his team first read through more than 100,000 medical notes to identify language their team considered to be disparaging – which they chose based on a list of words and phrases from prior research. They then used machine learning to find those terms in medical notes, taking care to ensure context was considered. For example, if the word “aggressive” was used to describe a treatment plan, it was excluded from their analysis. But if “aggressive” was used to describe the patient, it was included.
Dr. Saha pointed to three categories of stigmatizing language that were the most pronounced: expressing doubt or disbelief in what the patient said, such as reporting they “claimed” to experience pain; insinuating that the patient was confrontational, using words like “belligerent” or combative;” and suggesting a patient was not cooperating with a doctor’s orders by saying they “refused” medical advice.
“We’ve known for some time that in health care we sometimes use language that can be confusing or even insulting,” Matthew Wynia, director of the Center for Bioethics and Humanities at the University of Colorado at Denver, Aurora, wrote in an email to Undark. But he noted that research such as Dr. Saha’s has drawn attention to a previously overlooked issue. Describing a patient as “noncompliant” with medications, he said, “makes it sound like the patient is intentionally refusing to follow advice when, in fact, there are many reasons why people might not be able to follow our advice and intentional refusal isn’t even a very common one.”
Dr. Saha noted that, if a patient isn’t taking their medication, it’s important that doctors note that, so that the next physician doesn’t overprescribe them. But the concern, he said, is whether doctors are using these terms appropriately and for the right reasons because of the implications they have for patients.
If a doctor portrays their patient negatively, Dr. Saha said, it can “trigger the next clinician to read them and formulate a potentially negative opinion about that patient” before they’ve even had a chance to interact.
Still, stigmatizing language is only one small piece of the puzzle. What also matters, Dr. Saha said, is how those words can have an impact on care. In prior work, Dr. Saha has shown how implicit and, in some cases, explicit bias, affects a patient’s treatment recommendations.
In a 2018 study, Dr. Saha, along with his wife, Mary Catherine Beach – also a professor at Johns Hopkins University – combed through reports of patients with sickle cell anemia. Their team focused on that particular population since sickle cell patients are some of the most stigmatized in the health care system: Most patients are Black and many require regular doses of opioids for pain management.
In the notes, they found numerous examples of details that were irrelevant to patients’ health concerns: phrases like “girlfriend requests bus token,” “cursing at nurse,” “girlfriend on bed with shoes on,” and “narcotic dependent.”
Dr. Saha and Dr. Beach wanted to see how these remarks might influence a physician’s treatment recommendations, so they used vignettes they had found in the medical records of sickle cell patients. They showed either a vignette which had described patients negatively, or one that was edited with neutral language. Then they asked medical students and residents about the dose of pain medication they would hypothetically recommend. Dr. Beach said that the purpose was to see how what she called “dog whistles about social class or race or something that would make the person seem less educated” would impact treatment recommendations.
The study found that medical notes with stigmatizing language were associated with “less aggressive management of the patient’s pain.” Doctors who read the stigmatizing language chart notes prescribed less pain medication to patients even in cases when they commented that their pain was a 10 out of 10.
“The fact that we were able to show that this bias transmits to the next doctor has been the thing that I think motivates doctors to take it seriously,” said Dr. Beach.
Pain management has become a focal point for researchers because many of the most glaring racial tropes about patient care have revolved around pain. In 2016, a study conducted at the University of Virginia found that half of the 418 medical students and residents surveyed endorsed false beliefs about Black patients. For example, that “Blacks’ nerve endings are less sensitive than whites” and “Blacks’ skin is thicker than whites.” What’s more, those who endorsed these false beliefs also rated Black patients’ pain as lower than White patients’.
Antoinette M. Schoenthaler, a professor of population health and medicine at New York University and associate director of research at the school’s Institute for Excellence in Health Equity, said that disparities in pain management are pervasive and widespread across the medical profession. They seep into treatments for sickle cell anemia, but also prenatal care. As a result, she said, Black patients across the board are often fearful of attending appointments.
“Patients of color go into an appointment with feelings of heightened anxiety because they’re expecting mistreatment,” said Dr. Schoenthaler. “We’ve seen minoritized patients have higher blood pressure in the context of a clinical visit because of these expectations of anxiety and fear, and disappointment.”
Disparities in health care between Black and White patients is a complex issue – one which can’t be solved by addressing medical records alone. But, for researchers like Dr. Saha, Dr. Beach, and Dr. Sun, they can offer a road map that outlines where differences in care begin. The words a clinician uses sets the path for how a patient may be treated in the future.
One way to combat implicit bias, Dr. Saha suggested, is to use an algorithm that identifies stigmatizing language to “give hospital departments or clinicians report cards on how much of this language that they’re using.” By benchmarking averages against one another, clinicians could know if they’re using stigmatizing language at an above average rate. This is something he is considering for future research.
When clinicians are made aware of their biases – when the unconscious becomes conscious – Dr. Saha told Undark that he’s optimistic they’ll work to change them: “We’re using language that we’ve used forever without realizing the potential impact that it has on patient care.”
This article originated on Undark. A version of this article appeared on Medscape.com.
In the mid-1990s, when Somnath Saha was a medical resident at the University of California, San Francisco, School of Medicine, he came across a cluster of studies showing that Black people with cardiovascular disease were treated less aggressively, compared with White people. The findings were “appalling” to the young physician who describes himself as a “Brown kid from suburban St. Louis, Missouri.”
Dr. Saha had experienced racism growing up, but was surprised to see such clear signs of inequity within the field of medicine. “There was an injustice happening in my own backyard,” he said.
Indeed, bias towards Black patients can be challenging because many doctors either don’t realize their biases or won’t admit to them. Dr. Saha, now a professor of medicine at Johns Hopkins University, likens implicit bias – unconscious judgments that can affect behavior – to “an invisible force.”
While numerous studies have found evidence of racial discrimination in medicine through patient reports, less is known about how implicit bias shows up in medical records, and how stigmatizing language in patient notes can affect the care that Black patients receive.
That’s part of the reason why, about 7 years ago, Dr. Saha began poring through medical records. For him, they offered a window into doctors’ feelings about their patients.
As part of his latest research, Dr. Saha’s team examined the records of nearly 19,000 patients, paying particular attention to negative descriptions that may influence a clinician’s decision-making. The data, which were recently presented at the 2023 American Association for the Advancement of Science annual meeting, aren’t yet published, but it suggests what researchers have long speculated: The notes provide, at times, a surprisingly candid view of how patients are perceived by doctors, and how their race may affect treatment.
The study adds to a concerning body of literature that explores how racial bias manifests in health care. Researchers like Dr. Saha are interested in how such prejudice leaves a paper trail, which can then reinforce negative stereotypes. Because medical notes get passed between physicians, Dr. Saha’s research suggests they can affect the health of Black patients down the line.
“The medical record is like a rap sheet, it stays with you,” Dr. Saha said, adding that “these things that we say about patients get eternalized.”
Research has long shown that Black patients experience worse health outcomes, compared with White patients, in part because of biased medical care. Black women, for example, are three times more likely to die from pregnancy-related complications, compared with White women. And Black patients often report feeling like physicians don’t listen to their needs or don’t believe their concerns.
Studies appear to back that up. Last year, researchers at the University of Washington found that non-Hispanic White children who went to the emergency room for migraines were more likely to receive pain medications, compared with children of color – even though the two groups reported similar pain scores. Other studies echo similar results for adults as well.
While Michael Sun, a resident physician at the University of Chicago, knew about such health disparities, by his own admission, he was naive about the biases in medical records. At that time, Dr. Sun had “no experience in the medical record, in documentation, or in physician language and culture,” he said.
But in Dr. Sun’s first year of medical school, his professor shared the story of a longtime patient, whom she had referred to an outside specialist. In his recollection, the professor regarded her patient in kind terms, having worked with her for some time to treat a chronic illness. But when she got the specialist’s notes back, she was confused by the description of her patient: Terms like “really difficult,” “noncompliant,” and “uninterested in their health.” This was not the patient she remembered.
“This, as a first-year medical student, really shocked me because I had taken at face value that any words used in notes were true, were valid, or rightfully used,” said Dr. Sun. “I realized all the ways that bias, untold stories, and unknown context may change the way that we view our patients.”
Like Dr. Saha, Dr. Sun became interested in how bias influenced the relationship between doctor and patient, and how these interactions were memorialized in the medical record. In a study published last year, he and his colleagues looked at more than 40,000 medical notes from 18,459 patients. Researchers first manually combed through the notes, then used this information to teach a machine learning algorithm to interpret the connotations of words. Compared with White patients, Black patients were about 2.5 times more likely to be described negatively, with terms like “challenging,” “angry,” and “noncompliant.”
Dr. Saha has used similar methodology – and found similar results – in his own research. For the study presented at the AAAS meeting, his team first read through more than 100,000 medical notes to identify language their team considered to be disparaging – which they chose based on a list of words and phrases from prior research. They then used machine learning to find those terms in medical notes, taking care to ensure context was considered. For example, if the word “aggressive” was used to describe a treatment plan, it was excluded from their analysis. But if “aggressive” was used to describe the patient, it was included.
Dr. Saha pointed to three categories of stigmatizing language that were the most pronounced: expressing doubt or disbelief in what the patient said, such as reporting they “claimed” to experience pain; insinuating that the patient was confrontational, using words like “belligerent” or combative;” and suggesting a patient was not cooperating with a doctor’s orders by saying they “refused” medical advice.
“We’ve known for some time that in health care we sometimes use language that can be confusing or even insulting,” Matthew Wynia, director of the Center for Bioethics and Humanities at the University of Colorado at Denver, Aurora, wrote in an email to Undark. But he noted that research such as Dr. Saha’s has drawn attention to a previously overlooked issue. Describing a patient as “noncompliant” with medications, he said, “makes it sound like the patient is intentionally refusing to follow advice when, in fact, there are many reasons why people might not be able to follow our advice and intentional refusal isn’t even a very common one.”
Dr. Saha noted that, if a patient isn’t taking their medication, it’s important that doctors note that, so that the next physician doesn’t overprescribe them. But the concern, he said, is whether doctors are using these terms appropriately and for the right reasons because of the implications they have for patients.
If a doctor portrays their patient negatively, Dr. Saha said, it can “trigger the next clinician to read them and formulate a potentially negative opinion about that patient” before they’ve even had a chance to interact.
Still, stigmatizing language is only one small piece of the puzzle. What also matters, Dr. Saha said, is how those words can have an impact on care. In prior work, Dr. Saha has shown how implicit and, in some cases, explicit bias, affects a patient’s treatment recommendations.
In a 2018 study, Dr. Saha, along with his wife, Mary Catherine Beach – also a professor at Johns Hopkins University – combed through reports of patients with sickle cell anemia. Their team focused on that particular population since sickle cell patients are some of the most stigmatized in the health care system: Most patients are Black and many require regular doses of opioids for pain management.
In the notes, they found numerous examples of details that were irrelevant to patients’ health concerns: phrases like “girlfriend requests bus token,” “cursing at nurse,” “girlfriend on bed with shoes on,” and “narcotic dependent.”
Dr. Saha and Dr. Beach wanted to see how these remarks might influence a physician’s treatment recommendations, so they used vignettes they had found in the medical records of sickle cell patients. They showed either a vignette which had described patients negatively, or one that was edited with neutral language. Then they asked medical students and residents about the dose of pain medication they would hypothetically recommend. Dr. Beach said that the purpose was to see how what she called “dog whistles about social class or race or something that would make the person seem less educated” would impact treatment recommendations.
The study found that medical notes with stigmatizing language were associated with “less aggressive management of the patient’s pain.” Doctors who read the stigmatizing language chart notes prescribed less pain medication to patients even in cases when they commented that their pain was a 10 out of 10.
“The fact that we were able to show that this bias transmits to the next doctor has been the thing that I think motivates doctors to take it seriously,” said Dr. Beach.
Pain management has become a focal point for researchers because many of the most glaring racial tropes about patient care have revolved around pain. In 2016, a study conducted at the University of Virginia found that half of the 418 medical students and residents surveyed endorsed false beliefs about Black patients. For example, that “Blacks’ nerve endings are less sensitive than whites” and “Blacks’ skin is thicker than whites.” What’s more, those who endorsed these false beliefs also rated Black patients’ pain as lower than White patients’.
Antoinette M. Schoenthaler, a professor of population health and medicine at New York University and associate director of research at the school’s Institute for Excellence in Health Equity, said that disparities in pain management are pervasive and widespread across the medical profession. They seep into treatments for sickle cell anemia, but also prenatal care. As a result, she said, Black patients across the board are often fearful of attending appointments.
“Patients of color go into an appointment with feelings of heightened anxiety because they’re expecting mistreatment,” said Dr. Schoenthaler. “We’ve seen minoritized patients have higher blood pressure in the context of a clinical visit because of these expectations of anxiety and fear, and disappointment.”
Disparities in health care between Black and White patients is a complex issue – one which can’t be solved by addressing medical records alone. But, for researchers like Dr. Saha, Dr. Beach, and Dr. Sun, they can offer a road map that outlines where differences in care begin. The words a clinician uses sets the path for how a patient may be treated in the future.
One way to combat implicit bias, Dr. Saha suggested, is to use an algorithm that identifies stigmatizing language to “give hospital departments or clinicians report cards on how much of this language that they’re using.” By benchmarking averages against one another, clinicians could know if they’re using stigmatizing language at an above average rate. This is something he is considering for future research.
When clinicians are made aware of their biases – when the unconscious becomes conscious – Dr. Saha told Undark that he’s optimistic they’ll work to change them: “We’re using language that we’ve used forever without realizing the potential impact that it has on patient care.”
This article originated on Undark. A version of this article appeared on Medscape.com.
A tiny patch may someday do your patients’ lab work
A smartwatch can tell a lot about a person’s health, but for guarding against big threats like diabetes and heart disease, blood tests remain the gold standard – for now.
Someday, a wearable patch could give patients and doctors the same information, minus the poke in the arm and the schlep to the medical lab.
The patch will track markers in interstitial fluid.
Continuous glucose monitors have already provided this glimpse into the future, by using interstitial fluid to track blood glucose levels in real time.
Now scientists are asking: What else could this tech help us measure?
“The vision is eventually to develop a lab under the skin,” said Joseph Wang, PhD, professor of nanoengineering at the University of California San Diego.
The result:
How does it work?
Sweat and saliva may be easier to get to, but interstitial fluid is a better mirror for blood. It leaks from tiny blood vessels (capillaries), and it carries nutrients to and removes waste from your skin.
To capture this fluid, each monitor has either a tiny wire or an array of less-than-a-millimeter-long microneedles that penetrate the skin for days, weeks, or however long you wear it. “You don’t feel it,” Dr. Wang said. “Once you place it on the skin, you forget about it.”
The microneedles or wires are made from a polymer that sucks up the fluid, which flows to a biochemical sensor targeting the marker you want to measure.
The earliest patents for this technology date back to the 1990s (the first wearable glucose monitors for home use rolled out in the 2000s), but sensors have come a long way since then, becoming smaller, more accurate, and more sophisticated.
Glucose sensors use an enzyme that reacts to glucose to reveal its concentration in the blood. Researcher Jason Heikenfeld, PhD, and his team at the University of Cincinnati focus on “aptamers,” short single strands of DNA that bind to target molecules. “You can leverage the body’s own ability to generate stuff to grab a needle in a haystack,” he said.
The bigger picture
As our population ages and health care costs spiral, and our medical infrastructure and labor force are stretched thin, we’re seeing a push for decentralized medicine, Dr. Heikenfeld said. Like other at-home monitoring technologies, interstitial fluid sensing promises convenience and better access to care.
“There’s a lot you can do over telemedicine, over the phone,” said Justin T. Baca, MD, PhD, associate professor at the University of New Mexico, Albuquerque. “But we still haven’t figured out how to collect reliable biosamples and analyze them remotely.”
Unlike a traditional blood test, which gives a health snapshot for a single point in time, these devices track data continuously, revealing trends and helping you spot oncoming threats earlier.
Take ketones, for example. Dr. Baca and others are using interstitial fluid to continuously detect ketone levels in the blood, potentially enabling us to catch diabetic ketoacidosis sooner.
“It’s potentially like an early warning sign that somebody needs to get either checked out or get rehydrated or get some insulin; kind of an early diagnostic to avoid hospital visits later on,” Dr. Baca said.
Here’s what else this tech could help us do:
Chronic disease management
Seeing the health impact of medication and diet in real time could motivate patients to stick to their treatment plans, Dr. Heikenfeld said. Researchers in Taiwan are developing a test that could help people with chronic kidney disease track levels of cystatin C, a protein that goes up as kidney function declines. Heart disease patients could watch their cholesterol levels drop over time, and of course, diabetes patients can already track glucose.
Prescription drug monitoring
Providers could monitor drug levels in a patient’s body – like antibiotics for an infection – to see how it’s being metabolized, and adjust the dose as needed, Dr. Heikenfeld said.
Stress and hormone therapy
Interstitial fluid could help us measure hormone levels, such as the stress hormone cortisol.
Scientists in the United Kingdom and Norway developed a waist-worn device that collects interstitial fluid samples continuously for up to 3 days. In their study, samples were sent out for analysis, but someday the device could be equipped with a sensor to monitor a single hormone in real time, said study author Thomas Upton, PhD, a clinical research fellow at the University of Bristol in England. “There is a lot of interest in real-time cortisol monitoring,” he said.
Among those who could benefit: patients with hormone deficiencies, night shift workers with disturbed circadian rhythms, or anyone who wants to keep tabs on their stress response.
Human performance and wellness
Athletes could use glucose and lactate monitors to optimize training, recovery time, and diet. For those on the keto diet, a monitor could help them adjust their carb intake based on their ketone levels. Abbott’s Analyte Ventures group is working on blood alcohol sensors, helpful to anyone who wants to avoid overindulging.
When will this be ready for clinical use?
Early research has been promising, but much more is needed before interstitial fluid sensors can be verified and approved.
Manufacturing will be a challenge. Producing these sensors at scale, without sacrificing consistency or quality, won’t be cheap, said Dr. Heikenfeld. Today’s continuous glucose monitors took decades and hundreds of millions of dollars to develop.
Still, the groundwork has been laid.
“As we all pivot more towards interstitial fluid, there’s a proven roadmap of success that the big diagnostic companies over decades have cut their teeth on,” said Dr. Heikenfeld.
For now, scientists are refining sensors and figuring out how to protect them from other body fluids while in use, Dr. Wang said. But if it all comes together, the result could be game-changing.
Dr. Wang’s lab is developing a system that can monitor glucose and lactate or glucose and alcohol – which could become available in as little as 2 years, he said.
In the next decade, Dr. Wang predicted, we’ll be able to measure a dozen markers with one simple patch.
A version of this article originally appeared on WebMD.com.
A smartwatch can tell a lot about a person’s health, but for guarding against big threats like diabetes and heart disease, blood tests remain the gold standard – for now.
Someday, a wearable patch could give patients and doctors the same information, minus the poke in the arm and the schlep to the medical lab.
The patch will track markers in interstitial fluid.
Continuous glucose monitors have already provided this glimpse into the future, by using interstitial fluid to track blood glucose levels in real time.
Now scientists are asking: What else could this tech help us measure?
“The vision is eventually to develop a lab under the skin,” said Joseph Wang, PhD, professor of nanoengineering at the University of California San Diego.
The result:
How does it work?
Sweat and saliva may be easier to get to, but interstitial fluid is a better mirror for blood. It leaks from tiny blood vessels (capillaries), and it carries nutrients to and removes waste from your skin.
To capture this fluid, each monitor has either a tiny wire or an array of less-than-a-millimeter-long microneedles that penetrate the skin for days, weeks, or however long you wear it. “You don’t feel it,” Dr. Wang said. “Once you place it on the skin, you forget about it.”
The microneedles or wires are made from a polymer that sucks up the fluid, which flows to a biochemical sensor targeting the marker you want to measure.
The earliest patents for this technology date back to the 1990s (the first wearable glucose monitors for home use rolled out in the 2000s), but sensors have come a long way since then, becoming smaller, more accurate, and more sophisticated.
Glucose sensors use an enzyme that reacts to glucose to reveal its concentration in the blood. Researcher Jason Heikenfeld, PhD, and his team at the University of Cincinnati focus on “aptamers,” short single strands of DNA that bind to target molecules. “You can leverage the body’s own ability to generate stuff to grab a needle in a haystack,” he said.
The bigger picture
As our population ages and health care costs spiral, and our medical infrastructure and labor force are stretched thin, we’re seeing a push for decentralized medicine, Dr. Heikenfeld said. Like other at-home monitoring technologies, interstitial fluid sensing promises convenience and better access to care.
“There’s a lot you can do over telemedicine, over the phone,” said Justin T. Baca, MD, PhD, associate professor at the University of New Mexico, Albuquerque. “But we still haven’t figured out how to collect reliable biosamples and analyze them remotely.”
Unlike a traditional blood test, which gives a health snapshot for a single point in time, these devices track data continuously, revealing trends and helping you spot oncoming threats earlier.
Take ketones, for example. Dr. Baca and others are using interstitial fluid to continuously detect ketone levels in the blood, potentially enabling us to catch diabetic ketoacidosis sooner.
“It’s potentially like an early warning sign that somebody needs to get either checked out or get rehydrated or get some insulin; kind of an early diagnostic to avoid hospital visits later on,” Dr. Baca said.
Here’s what else this tech could help us do:
Chronic disease management
Seeing the health impact of medication and diet in real time could motivate patients to stick to their treatment plans, Dr. Heikenfeld said. Researchers in Taiwan are developing a test that could help people with chronic kidney disease track levels of cystatin C, a protein that goes up as kidney function declines. Heart disease patients could watch their cholesterol levels drop over time, and of course, diabetes patients can already track glucose.
Prescription drug monitoring
Providers could monitor drug levels in a patient’s body – like antibiotics for an infection – to see how it’s being metabolized, and adjust the dose as needed, Dr. Heikenfeld said.
Stress and hormone therapy
Interstitial fluid could help us measure hormone levels, such as the stress hormone cortisol.
Scientists in the United Kingdom and Norway developed a waist-worn device that collects interstitial fluid samples continuously for up to 3 days. In their study, samples were sent out for analysis, but someday the device could be equipped with a sensor to monitor a single hormone in real time, said study author Thomas Upton, PhD, a clinical research fellow at the University of Bristol in England. “There is a lot of interest in real-time cortisol monitoring,” he said.
Among those who could benefit: patients with hormone deficiencies, night shift workers with disturbed circadian rhythms, or anyone who wants to keep tabs on their stress response.
Human performance and wellness
Athletes could use glucose and lactate monitors to optimize training, recovery time, and diet. For those on the keto diet, a monitor could help them adjust their carb intake based on their ketone levels. Abbott’s Analyte Ventures group is working on blood alcohol sensors, helpful to anyone who wants to avoid overindulging.
When will this be ready for clinical use?
Early research has been promising, but much more is needed before interstitial fluid sensors can be verified and approved.
Manufacturing will be a challenge. Producing these sensors at scale, without sacrificing consistency or quality, won’t be cheap, said Dr. Heikenfeld. Today’s continuous glucose monitors took decades and hundreds of millions of dollars to develop.
Still, the groundwork has been laid.
“As we all pivot more towards interstitial fluid, there’s a proven roadmap of success that the big diagnostic companies over decades have cut their teeth on,” said Dr. Heikenfeld.
For now, scientists are refining sensors and figuring out how to protect them from other body fluids while in use, Dr. Wang said. But if it all comes together, the result could be game-changing.
Dr. Wang’s lab is developing a system that can monitor glucose and lactate or glucose and alcohol – which could become available in as little as 2 years, he said.
In the next decade, Dr. Wang predicted, we’ll be able to measure a dozen markers with one simple patch.
A version of this article originally appeared on WebMD.com.
A smartwatch can tell a lot about a person’s health, but for guarding against big threats like diabetes and heart disease, blood tests remain the gold standard – for now.
Someday, a wearable patch could give patients and doctors the same information, minus the poke in the arm and the schlep to the medical lab.
The patch will track markers in interstitial fluid.
Continuous glucose monitors have already provided this glimpse into the future, by using interstitial fluid to track blood glucose levels in real time.
Now scientists are asking: What else could this tech help us measure?
“The vision is eventually to develop a lab under the skin,” said Joseph Wang, PhD, professor of nanoengineering at the University of California San Diego.
The result:
How does it work?
Sweat and saliva may be easier to get to, but interstitial fluid is a better mirror for blood. It leaks from tiny blood vessels (capillaries), and it carries nutrients to and removes waste from your skin.
To capture this fluid, each monitor has either a tiny wire or an array of less-than-a-millimeter-long microneedles that penetrate the skin for days, weeks, or however long you wear it. “You don’t feel it,” Dr. Wang said. “Once you place it on the skin, you forget about it.”
The microneedles or wires are made from a polymer that sucks up the fluid, which flows to a biochemical sensor targeting the marker you want to measure.
The earliest patents for this technology date back to the 1990s (the first wearable glucose monitors for home use rolled out in the 2000s), but sensors have come a long way since then, becoming smaller, more accurate, and more sophisticated.
Glucose sensors use an enzyme that reacts to glucose to reveal its concentration in the blood. Researcher Jason Heikenfeld, PhD, and his team at the University of Cincinnati focus on “aptamers,” short single strands of DNA that bind to target molecules. “You can leverage the body’s own ability to generate stuff to grab a needle in a haystack,” he said.
The bigger picture
As our population ages and health care costs spiral, and our medical infrastructure and labor force are stretched thin, we’re seeing a push for decentralized medicine, Dr. Heikenfeld said. Like other at-home monitoring technologies, interstitial fluid sensing promises convenience and better access to care.
“There’s a lot you can do over telemedicine, over the phone,” said Justin T. Baca, MD, PhD, associate professor at the University of New Mexico, Albuquerque. “But we still haven’t figured out how to collect reliable biosamples and analyze them remotely.”
Unlike a traditional blood test, which gives a health snapshot for a single point in time, these devices track data continuously, revealing trends and helping you spot oncoming threats earlier.
Take ketones, for example. Dr. Baca and others are using interstitial fluid to continuously detect ketone levels in the blood, potentially enabling us to catch diabetic ketoacidosis sooner.
“It’s potentially like an early warning sign that somebody needs to get either checked out or get rehydrated or get some insulin; kind of an early diagnostic to avoid hospital visits later on,” Dr. Baca said.
Here’s what else this tech could help us do:
Chronic disease management
Seeing the health impact of medication and diet in real time could motivate patients to stick to their treatment plans, Dr. Heikenfeld said. Researchers in Taiwan are developing a test that could help people with chronic kidney disease track levels of cystatin C, a protein that goes up as kidney function declines. Heart disease patients could watch their cholesterol levels drop over time, and of course, diabetes patients can already track glucose.
Prescription drug monitoring
Providers could monitor drug levels in a patient’s body – like antibiotics for an infection – to see how it’s being metabolized, and adjust the dose as needed, Dr. Heikenfeld said.
Stress and hormone therapy
Interstitial fluid could help us measure hormone levels, such as the stress hormone cortisol.
Scientists in the United Kingdom and Norway developed a waist-worn device that collects interstitial fluid samples continuously for up to 3 days. In their study, samples were sent out for analysis, but someday the device could be equipped with a sensor to monitor a single hormone in real time, said study author Thomas Upton, PhD, a clinical research fellow at the University of Bristol in England. “There is a lot of interest in real-time cortisol monitoring,” he said.
Among those who could benefit: patients with hormone deficiencies, night shift workers with disturbed circadian rhythms, or anyone who wants to keep tabs on their stress response.
Human performance and wellness
Athletes could use glucose and lactate monitors to optimize training, recovery time, and diet. For those on the keto diet, a monitor could help them adjust their carb intake based on their ketone levels. Abbott’s Analyte Ventures group is working on blood alcohol sensors, helpful to anyone who wants to avoid overindulging.
When will this be ready for clinical use?
Early research has been promising, but much more is needed before interstitial fluid sensors can be verified and approved.
Manufacturing will be a challenge. Producing these sensors at scale, without sacrificing consistency or quality, won’t be cheap, said Dr. Heikenfeld. Today’s continuous glucose monitors took decades and hundreds of millions of dollars to develop.
Still, the groundwork has been laid.
“As we all pivot more towards interstitial fluid, there’s a proven roadmap of success that the big diagnostic companies over decades have cut their teeth on,” said Dr. Heikenfeld.
For now, scientists are refining sensors and figuring out how to protect them from other body fluids while in use, Dr. Wang said. But if it all comes together, the result could be game-changing.
Dr. Wang’s lab is developing a system that can monitor glucose and lactate or glucose and alcohol – which could become available in as little as 2 years, he said.
In the next decade, Dr. Wang predicted, we’ll be able to measure a dozen markers with one simple patch.
A version of this article originally appeared on WebMD.com.
HT, even short-term use, linked to dementia risk in women
Short-term and cyclical use of estrogen and progestin therapy for menopausal symptoms is linked to an increased risk of dementia, results of a large observational study show.
(AD) 20 years later, compared with those who didn’t use HT. The risk was present even in women who used HT for brief periods at menopause onset.
However, both the investigators and experts not involved in the research caution that further studies are needed to explore whether the increased risk of dementia stems from HT use or whether women in need of HT have other underlying dementia risk factors.
“We cannot guarantee that our findings illustrate a causal relationship or if they represent underlying disposition to dementia in women in need of [HT],” lead investigator Nelsan Pourhadi, MD, from the Danish Dementia Research Centre at Copenhagen University Hospital Rigshospitalet, told this news organization.
Still, he added, the findings supported evidence from the Women’s Health Initiative Memory Study (WHIMS), the largest randomized trial on menopausal hormone therapy and dementia.
The findings were published online in BMJ.
Conflicting findings
Before WHIMS was published in 2003, HT was widely prescribed to relieve menopausal symptoms. However, WHIMS, which included more than 4,000 women aged 65 years or older, revealed that HT was associated with a twofold increased risk of dementia.
Studies published since then have yielded mixed results, adding to the controversy surrounding the safety of HT.
To discover whether age of initiation or length of duration of HT affects health outcomes, Dr. Pourhadi and his team undertook the observational study.
Between 2000 and 2018, the researchers tracked more than 60,000 Danish women aged 50-60 years using diagnosis and prescription information from Denmark’s National Registry of Patients.
The registry records showed that nearly 5,600 women developed dementia and 56,000 did not develop dementia. Of the 5,600 women with dementia, 1,460 had a diagnosis of AD.
Nearly 18,000 participants in the study sample received HT – 1,790 (29%) in the dementia group and 16,150 (32%) in the control group. Half started treatment before age 53 years and half stopped within 4 years. Roughly 90% used oral medications, which included a combination of estrogen and progestin.
The median age at which participants started HT was 53 years for both cases and controls, and the median duration of use was 4 years.
Longer use equals greater risk
Compared with those who did not use HT, those who used estrogen-progestin therapy had a 24% increased risk of developing all-cause dementia (hazard ratio, 1.24; 95% confidence interval, 1.17-1.44).
The increased dementia risk was similar between continuous (estrogen and progestin taken daily) and cyclic (daily estrogen with progestin taken 10-14 days a month) treatment regimens.
Longer durations of HT use were associated with increased risk, ranging from a 21% increased risk (HR, 1.21; 95% CI, 1.09-1.35) for those who used it for 1 year or less to a 74% increased risk (HR, 1.74; 95% CI, 1.45-2.10) for use lasting 12 years or more.
Women who started HT between the age of 45 and 50 had a 26% increased risk of developing all-cause dementia (HR, 1.26; 95% CI, 1.13-1.41) while women who initiated HT between age 51 and 60 had a 21% greater risk (HR, 1.21; 95% CI, 1.12-1.29).
Progestin-only or vaginal-estrogen-only therapy was not associated with the development of dementia.
The investigators noted that because this is an observational study, “further studies are warranted to explore if the observed association in this study between menopausal hormone therapy use and increased risk of dementia illustrates a causal effect.”
No causal relationship
In an accompanying editorial, Kejal Kantarci, MD, a professor of radiology at the Mayo Clinic, Rochester, Minn., noted that three clinical trials, including the WHIMS of Younger Women (WHIMS-Y) in 2013, did not show a link between cognitive function and HT.
“Although [Dr.] Pourhadi and colleagues’ study was done carefully using national registries, the observed associations could be artefactual and should not be used to infer a causal relationship between hormone therapy and dementia risk. These findings cannot inform shared decision-making about use of hormone therapy for menopausal symptoms,” she states in the editorial.
Also commenting on the findings, Amanda Heslegrave, PhD, a senior research fellow at the U.K. Dementia Research Institute, London, said in a release from the U.K.’s Science Media Centre that while the study “may cause alarm for women taking [HT], it highlights just how much we still don’t know about the effects of hormones on women’s brain health, and with promising treatments on the horizon, it should be a call to action to make this a priority area of research.”
There was no specific funding for the study. Dr. Kantarci reported working on an unpaid educational activity on Alzheimer’s disease for Biogen and is the PI on a study of a PET imaging ligand for Alzheimer’s disease, to which Eli Lilly and Avid Radiopharmaceuticals donated supplies.
A version of this article originally appeared on Medscape.com.
Short-term and cyclical use of estrogen and progestin therapy for menopausal symptoms is linked to an increased risk of dementia, results of a large observational study show.
(AD) 20 years later, compared with those who didn’t use HT. The risk was present even in women who used HT for brief periods at menopause onset.
However, both the investigators and experts not involved in the research caution that further studies are needed to explore whether the increased risk of dementia stems from HT use or whether women in need of HT have other underlying dementia risk factors.
“We cannot guarantee that our findings illustrate a causal relationship or if they represent underlying disposition to dementia in women in need of [HT],” lead investigator Nelsan Pourhadi, MD, from the Danish Dementia Research Centre at Copenhagen University Hospital Rigshospitalet, told this news organization.
Still, he added, the findings supported evidence from the Women’s Health Initiative Memory Study (WHIMS), the largest randomized trial on menopausal hormone therapy and dementia.
The findings were published online in BMJ.
Conflicting findings
Before WHIMS was published in 2003, HT was widely prescribed to relieve menopausal symptoms. However, WHIMS, which included more than 4,000 women aged 65 years or older, revealed that HT was associated with a twofold increased risk of dementia.
Studies published since then have yielded mixed results, adding to the controversy surrounding the safety of HT.
To discover whether age of initiation or length of duration of HT affects health outcomes, Dr. Pourhadi and his team undertook the observational study.
Between 2000 and 2018, the researchers tracked more than 60,000 Danish women aged 50-60 years using diagnosis and prescription information from Denmark’s National Registry of Patients.
The registry records showed that nearly 5,600 women developed dementia and 56,000 did not develop dementia. Of the 5,600 women with dementia, 1,460 had a diagnosis of AD.
Nearly 18,000 participants in the study sample received HT – 1,790 (29%) in the dementia group and 16,150 (32%) in the control group. Half started treatment before age 53 years and half stopped within 4 years. Roughly 90% used oral medications, which included a combination of estrogen and progestin.
The median age at which participants started HT was 53 years for both cases and controls, and the median duration of use was 4 years.
Longer use equals greater risk
Compared with those who did not use HT, those who used estrogen-progestin therapy had a 24% increased risk of developing all-cause dementia (hazard ratio, 1.24; 95% confidence interval, 1.17-1.44).
The increased dementia risk was similar between continuous (estrogen and progestin taken daily) and cyclic (daily estrogen with progestin taken 10-14 days a month) treatment regimens.
Longer durations of HT use were associated with increased risk, ranging from a 21% increased risk (HR, 1.21; 95% CI, 1.09-1.35) for those who used it for 1 year or less to a 74% increased risk (HR, 1.74; 95% CI, 1.45-2.10) for use lasting 12 years or more.
Women who started HT between the age of 45 and 50 had a 26% increased risk of developing all-cause dementia (HR, 1.26; 95% CI, 1.13-1.41) while women who initiated HT between age 51 and 60 had a 21% greater risk (HR, 1.21; 95% CI, 1.12-1.29).
Progestin-only or vaginal-estrogen-only therapy was not associated with the development of dementia.
The investigators noted that because this is an observational study, “further studies are warranted to explore if the observed association in this study between menopausal hormone therapy use and increased risk of dementia illustrates a causal effect.”
No causal relationship
In an accompanying editorial, Kejal Kantarci, MD, a professor of radiology at the Mayo Clinic, Rochester, Minn., noted that three clinical trials, including the WHIMS of Younger Women (WHIMS-Y) in 2013, did not show a link between cognitive function and HT.
“Although [Dr.] Pourhadi and colleagues’ study was done carefully using national registries, the observed associations could be artefactual and should not be used to infer a causal relationship between hormone therapy and dementia risk. These findings cannot inform shared decision-making about use of hormone therapy for menopausal symptoms,” she states in the editorial.
Also commenting on the findings, Amanda Heslegrave, PhD, a senior research fellow at the U.K. Dementia Research Institute, London, said in a release from the U.K.’s Science Media Centre that while the study “may cause alarm for women taking [HT], it highlights just how much we still don’t know about the effects of hormones on women’s brain health, and with promising treatments on the horizon, it should be a call to action to make this a priority area of research.”
There was no specific funding for the study. Dr. Kantarci reported working on an unpaid educational activity on Alzheimer’s disease for Biogen and is the PI on a study of a PET imaging ligand for Alzheimer’s disease, to which Eli Lilly and Avid Radiopharmaceuticals donated supplies.
A version of this article originally appeared on Medscape.com.
Short-term and cyclical use of estrogen and progestin therapy for menopausal symptoms is linked to an increased risk of dementia, results of a large observational study show.
(AD) 20 years later, compared with those who didn’t use HT. The risk was present even in women who used HT for brief periods at menopause onset.
However, both the investigators and experts not involved in the research caution that further studies are needed to explore whether the increased risk of dementia stems from HT use or whether women in need of HT have other underlying dementia risk factors.
“We cannot guarantee that our findings illustrate a causal relationship or if they represent underlying disposition to dementia in women in need of [HT],” lead investigator Nelsan Pourhadi, MD, from the Danish Dementia Research Centre at Copenhagen University Hospital Rigshospitalet, told this news organization.
Still, he added, the findings supported evidence from the Women’s Health Initiative Memory Study (WHIMS), the largest randomized trial on menopausal hormone therapy and dementia.
The findings were published online in BMJ.
Conflicting findings
Before WHIMS was published in 2003, HT was widely prescribed to relieve menopausal symptoms. However, WHIMS, which included more than 4,000 women aged 65 years or older, revealed that HT was associated with a twofold increased risk of dementia.
Studies published since then have yielded mixed results, adding to the controversy surrounding the safety of HT.
To discover whether age of initiation or length of duration of HT affects health outcomes, Dr. Pourhadi and his team undertook the observational study.
Between 2000 and 2018, the researchers tracked more than 60,000 Danish women aged 50-60 years using diagnosis and prescription information from Denmark’s National Registry of Patients.
The registry records showed that nearly 5,600 women developed dementia and 56,000 did not develop dementia. Of the 5,600 women with dementia, 1,460 had a diagnosis of AD.
Nearly 18,000 participants in the study sample received HT – 1,790 (29%) in the dementia group and 16,150 (32%) in the control group. Half started treatment before age 53 years and half stopped within 4 years. Roughly 90% used oral medications, which included a combination of estrogen and progestin.
The median age at which participants started HT was 53 years for both cases and controls, and the median duration of use was 4 years.
Longer use equals greater risk
Compared with those who did not use HT, those who used estrogen-progestin therapy had a 24% increased risk of developing all-cause dementia (hazard ratio, 1.24; 95% confidence interval, 1.17-1.44).
The increased dementia risk was similar between continuous (estrogen and progestin taken daily) and cyclic (daily estrogen with progestin taken 10-14 days a month) treatment regimens.
Longer durations of HT use were associated with increased risk, ranging from a 21% increased risk (HR, 1.21; 95% CI, 1.09-1.35) for those who used it for 1 year or less to a 74% increased risk (HR, 1.74; 95% CI, 1.45-2.10) for use lasting 12 years or more.
Women who started HT between the age of 45 and 50 had a 26% increased risk of developing all-cause dementia (HR, 1.26; 95% CI, 1.13-1.41) while women who initiated HT between age 51 and 60 had a 21% greater risk (HR, 1.21; 95% CI, 1.12-1.29).
Progestin-only or vaginal-estrogen-only therapy was not associated with the development of dementia.
The investigators noted that because this is an observational study, “further studies are warranted to explore if the observed association in this study between menopausal hormone therapy use and increased risk of dementia illustrates a causal effect.”
No causal relationship
In an accompanying editorial, Kejal Kantarci, MD, a professor of radiology at the Mayo Clinic, Rochester, Minn., noted that three clinical trials, including the WHIMS of Younger Women (WHIMS-Y) in 2013, did not show a link between cognitive function and HT.
“Although [Dr.] Pourhadi and colleagues’ study was done carefully using national registries, the observed associations could be artefactual and should not be used to infer a causal relationship between hormone therapy and dementia risk. These findings cannot inform shared decision-making about use of hormone therapy for menopausal symptoms,” she states in the editorial.
Also commenting on the findings, Amanda Heslegrave, PhD, a senior research fellow at the U.K. Dementia Research Institute, London, said in a release from the U.K.’s Science Media Centre that while the study “may cause alarm for women taking [HT], it highlights just how much we still don’t know about the effects of hormones on women’s brain health, and with promising treatments on the horizon, it should be a call to action to make this a priority area of research.”
There was no specific funding for the study. Dr. Kantarci reported working on an unpaid educational activity on Alzheimer’s disease for Biogen and is the PI on a study of a PET imaging ligand for Alzheimer’s disease, to which Eli Lilly and Avid Radiopharmaceuticals donated supplies.
A version of this article originally appeared on Medscape.com.
Med students, doctor groups react to SCOTUS affirmative action ban
The U.S. Supreme Court ruled on June 29 that using race as a factor in college admissions is unconstitutional, rolling back more than 40 years of affirmative action standards and changing how medical schools evaluate applicants to attract students from diverse backgrounds.
Jesse M. Ehrenfeld, MD, MPH, president of the American Medical Association, said in a prepared statement that the Supreme Court ruling will result in a less diverse physician workforce, which is “bad for health care, bad for medicine, and undermines the health of our nation.” He cited the AMA’s recent adoption of a policy advising medical schools to increase enrollment of people from racial and ethnic groups traditionally underrepresented in medicine – even if that means considering race as a factor in admissions criteria.
“Supporting racial and ethnic diversity in the health professions – spanning classrooms, labs, and clinical settings – enriches the educational experiences of all medical and health professions students and the teaching experiences of faculty, and it is essential to improving the overall health of our nation,” the Association of American Medical Colleges (AAMC) said in a prepared statement.
The American Medical Student Association also denounced the Supreme Court decision. “As future physicians committed to justice and equality, we are profoundly outraged ... We strongly support increased representation of minority students in all levels of education, including colleges and medical schools. By fostering diversity and inclusion, institutions have the power to create more empathetic and inclusive learning environments,” the organization said in a press release.
“Diversity in the health care workforce not only benefits underserved patients but improves care for all patients” by increasing understanding and empathy for people of various cultures, Omar T. Atiq, MD, president of the American College of Physicians, said in a press release.
The Supreme Court ruling stems from a lawsuit by the Students for Fair Admissions against Harvard University and the University of North Carolina. The lawsuit alleges that considering race in the college admission process constitutes discrimination and violates the Equal Protection Clause.
Chief Justice John Roberts, who delivered the court’s decision, stated that an applicant’s personal experiences should carry the most weight in admission decisions and that historically, universities have “wrongly concluded that the touchstone of an individual’s identity is not challenges bested, skills built, or lessons learned, but the color of their skin. Our constitutional history does not tolerate that choice.”
Still, Justice Roberts said the opinion does not prohibit universities from considering how race has affected an applicant’s life, “be it through discrimination, inspiration, or otherwise.”
Diversity in medical schools increased last year, with more Black, Hispanic, and female students applying and enrolling. But continued diversity efforts were expected to prove challenging with affirmative action off the table, according to an amicus brief filed last year by the AMA, the AAMC, and dozens of other professional health care organizations.
The brief supported continued use of race in college admissions, stating that eliminating that factor could slow efforts to achieve greater health equity because fewer doctors would be training and working with colleagues from diverse backgrounds.
Several universities with medical programs, such as Yale and Johns Hopkins universities, filed a separate brief citing similar concerns. After the June 29 decision, Harvard and the University of North Carolina released statements stating they would comply with the ruling.
A version of this article first appeared on Medscape.com.
The U.S. Supreme Court ruled on June 29 that using race as a factor in college admissions is unconstitutional, rolling back more than 40 years of affirmative action standards and changing how medical schools evaluate applicants to attract students from diverse backgrounds.
Jesse M. Ehrenfeld, MD, MPH, president of the American Medical Association, said in a prepared statement that the Supreme Court ruling will result in a less diverse physician workforce, which is “bad for health care, bad for medicine, and undermines the health of our nation.” He cited the AMA’s recent adoption of a policy advising medical schools to increase enrollment of people from racial and ethnic groups traditionally underrepresented in medicine – even if that means considering race as a factor in admissions criteria.
“Supporting racial and ethnic diversity in the health professions – spanning classrooms, labs, and clinical settings – enriches the educational experiences of all medical and health professions students and the teaching experiences of faculty, and it is essential to improving the overall health of our nation,” the Association of American Medical Colleges (AAMC) said in a prepared statement.
The American Medical Student Association also denounced the Supreme Court decision. “As future physicians committed to justice and equality, we are profoundly outraged ... We strongly support increased representation of minority students in all levels of education, including colleges and medical schools. By fostering diversity and inclusion, institutions have the power to create more empathetic and inclusive learning environments,” the organization said in a press release.
“Diversity in the health care workforce not only benefits underserved patients but improves care for all patients” by increasing understanding and empathy for people of various cultures, Omar T. Atiq, MD, president of the American College of Physicians, said in a press release.
The Supreme Court ruling stems from a lawsuit by the Students for Fair Admissions against Harvard University and the University of North Carolina. The lawsuit alleges that considering race in the college admission process constitutes discrimination and violates the Equal Protection Clause.
Chief Justice John Roberts, who delivered the court’s decision, stated that an applicant’s personal experiences should carry the most weight in admission decisions and that historically, universities have “wrongly concluded that the touchstone of an individual’s identity is not challenges bested, skills built, or lessons learned, but the color of their skin. Our constitutional history does not tolerate that choice.”
Still, Justice Roberts said the opinion does not prohibit universities from considering how race has affected an applicant’s life, “be it through discrimination, inspiration, or otherwise.”
Diversity in medical schools increased last year, with more Black, Hispanic, and female students applying and enrolling. But continued diversity efforts were expected to prove challenging with affirmative action off the table, according to an amicus brief filed last year by the AMA, the AAMC, and dozens of other professional health care organizations.
The brief supported continued use of race in college admissions, stating that eliminating that factor could slow efforts to achieve greater health equity because fewer doctors would be training and working with colleagues from diverse backgrounds.
Several universities with medical programs, such as Yale and Johns Hopkins universities, filed a separate brief citing similar concerns. After the June 29 decision, Harvard and the University of North Carolina released statements stating they would comply with the ruling.
A version of this article first appeared on Medscape.com.
The U.S. Supreme Court ruled on June 29 that using race as a factor in college admissions is unconstitutional, rolling back more than 40 years of affirmative action standards and changing how medical schools evaluate applicants to attract students from diverse backgrounds.
Jesse M. Ehrenfeld, MD, MPH, president of the American Medical Association, said in a prepared statement that the Supreme Court ruling will result in a less diverse physician workforce, which is “bad for health care, bad for medicine, and undermines the health of our nation.” He cited the AMA’s recent adoption of a policy advising medical schools to increase enrollment of people from racial and ethnic groups traditionally underrepresented in medicine – even if that means considering race as a factor in admissions criteria.
“Supporting racial and ethnic diversity in the health professions – spanning classrooms, labs, and clinical settings – enriches the educational experiences of all medical and health professions students and the teaching experiences of faculty, and it is essential to improving the overall health of our nation,” the Association of American Medical Colleges (AAMC) said in a prepared statement.
The American Medical Student Association also denounced the Supreme Court decision. “As future physicians committed to justice and equality, we are profoundly outraged ... We strongly support increased representation of minority students in all levels of education, including colleges and medical schools. By fostering diversity and inclusion, institutions have the power to create more empathetic and inclusive learning environments,” the organization said in a press release.
“Diversity in the health care workforce not only benefits underserved patients but improves care for all patients” by increasing understanding and empathy for people of various cultures, Omar T. Atiq, MD, president of the American College of Physicians, said in a press release.
The Supreme Court ruling stems from a lawsuit by the Students for Fair Admissions against Harvard University and the University of North Carolina. The lawsuit alleges that considering race in the college admission process constitutes discrimination and violates the Equal Protection Clause.
Chief Justice John Roberts, who delivered the court’s decision, stated that an applicant’s personal experiences should carry the most weight in admission decisions and that historically, universities have “wrongly concluded that the touchstone of an individual’s identity is not challenges bested, skills built, or lessons learned, but the color of their skin. Our constitutional history does not tolerate that choice.”
Still, Justice Roberts said the opinion does not prohibit universities from considering how race has affected an applicant’s life, “be it through discrimination, inspiration, or otherwise.”
Diversity in medical schools increased last year, with more Black, Hispanic, and female students applying and enrolling. But continued diversity efforts were expected to prove challenging with affirmative action off the table, according to an amicus brief filed last year by the AMA, the AAMC, and dozens of other professional health care organizations.
The brief supported continued use of race in college admissions, stating that eliminating that factor could slow efforts to achieve greater health equity because fewer doctors would be training and working with colleagues from diverse backgrounds.
Several universities with medical programs, such as Yale and Johns Hopkins universities, filed a separate brief citing similar concerns. After the June 29 decision, Harvard and the University of North Carolina released statements stating they would comply with the ruling.
A version of this article first appeared on Medscape.com.
New AHA statement on ischemia after cardiac surgery
The American Heart Association outlines “considerations” on the management of acute postoperative myocardial ischemia (PMI) after cardiac surgery in a scientific statement.
Although an infrequent event, acute PMI following cardiac surgery can rapidly evolve and become a potentially life-threatening complication, the writing group, led by Mario Gaudino, MD, PhD, with Weill Cornell Medicine, New York, points out.
The new statement was published online in Circulation.
Data show that the incidence of postoperative myocardial infarction after cardiac surgery ranges from 0.3% to 9.8% after isolated coronary artery bypass graft (CABG) surgery and 0.7% to 11.8% after concomitant valvular surgery. For isolated mitral valve surgery, incidence ranges from 1.7% to 2.2%.
Short-term mortality is elevated among patients with acute PMI, irrespective of the type of surgery. Reported mortality rates range from 5.1% to 24%; the evidence on long-term mortality has been mixed.
Graft-related factors are the most common cause of PMI after CABG, but other factors may contribute, including technical factors, competitive flow, suture entrapment, or coronary artery distortion, as well as non–graft related factors.
Prompt diagnosis and treatment important
Currently, there is no consensus definition of PMI. Elevations in cardiac biomarkers may not be reliable for diagnosis after surgery, and pain management regimens may mask symptoms of ischemia, the writing group notes.
because timely diagnosis and treatment are key to a good clinical outcome,” they write.
Delay in urgent angiography has been associated with higher mortality; thus, a low threshold for action is encouraged for patients with suspected acute PMI.
Indications for urgent angiography include new ECG changes, chest pain with ongoing signs of ischemia, cardiac imaging abnormalities, cardiac rhythm abnormalities, significant elevations in cardiac biomarkers, and low cardiac output syndrome despite postoperative pressor support.
Patients with acute PMI and low cardiac output syndrome may require mechanical support when first-line treatment fails.
The writing group says fast and effective reperfusion of the ischemic zone, which is generally achieved by percutaneous intervention and, less often, by repeat surgery, is the key to a good clinical outcome.
The statement was prepared by the volunteer writing group on behalf of the AHA Council on Cardiovascular Surgery and Anesthesia; Council on Clinical Cardiology; Council on Cardiovascular and Stroke Nursing; and Stroke Council.
The research had no commercial funding. Disclosures for the writing group are listed with the original article.
A version of this article originally appeared on Medscape.com.
The American Heart Association outlines “considerations” on the management of acute postoperative myocardial ischemia (PMI) after cardiac surgery in a scientific statement.
Although an infrequent event, acute PMI following cardiac surgery can rapidly evolve and become a potentially life-threatening complication, the writing group, led by Mario Gaudino, MD, PhD, with Weill Cornell Medicine, New York, points out.
The new statement was published online in Circulation.
Data show that the incidence of postoperative myocardial infarction after cardiac surgery ranges from 0.3% to 9.8% after isolated coronary artery bypass graft (CABG) surgery and 0.7% to 11.8% after concomitant valvular surgery. For isolated mitral valve surgery, incidence ranges from 1.7% to 2.2%.
Short-term mortality is elevated among patients with acute PMI, irrespective of the type of surgery. Reported mortality rates range from 5.1% to 24%; the evidence on long-term mortality has been mixed.
Graft-related factors are the most common cause of PMI after CABG, but other factors may contribute, including technical factors, competitive flow, suture entrapment, or coronary artery distortion, as well as non–graft related factors.
Prompt diagnosis and treatment important
Currently, there is no consensus definition of PMI. Elevations in cardiac biomarkers may not be reliable for diagnosis after surgery, and pain management regimens may mask symptoms of ischemia, the writing group notes.
because timely diagnosis and treatment are key to a good clinical outcome,” they write.
Delay in urgent angiography has been associated with higher mortality; thus, a low threshold for action is encouraged for patients with suspected acute PMI.
Indications for urgent angiography include new ECG changes, chest pain with ongoing signs of ischemia, cardiac imaging abnormalities, cardiac rhythm abnormalities, significant elevations in cardiac biomarkers, and low cardiac output syndrome despite postoperative pressor support.
Patients with acute PMI and low cardiac output syndrome may require mechanical support when first-line treatment fails.
The writing group says fast and effective reperfusion of the ischemic zone, which is generally achieved by percutaneous intervention and, less often, by repeat surgery, is the key to a good clinical outcome.
The statement was prepared by the volunteer writing group on behalf of the AHA Council on Cardiovascular Surgery and Anesthesia; Council on Clinical Cardiology; Council on Cardiovascular and Stroke Nursing; and Stroke Council.
The research had no commercial funding. Disclosures for the writing group are listed with the original article.
A version of this article originally appeared on Medscape.com.
The American Heart Association outlines “considerations” on the management of acute postoperative myocardial ischemia (PMI) after cardiac surgery in a scientific statement.
Although an infrequent event, acute PMI following cardiac surgery can rapidly evolve and become a potentially life-threatening complication, the writing group, led by Mario Gaudino, MD, PhD, with Weill Cornell Medicine, New York, points out.
The new statement was published online in Circulation.
Data show that the incidence of postoperative myocardial infarction after cardiac surgery ranges from 0.3% to 9.8% after isolated coronary artery bypass graft (CABG) surgery and 0.7% to 11.8% after concomitant valvular surgery. For isolated mitral valve surgery, incidence ranges from 1.7% to 2.2%.
Short-term mortality is elevated among patients with acute PMI, irrespective of the type of surgery. Reported mortality rates range from 5.1% to 24%; the evidence on long-term mortality has been mixed.
Graft-related factors are the most common cause of PMI after CABG, but other factors may contribute, including technical factors, competitive flow, suture entrapment, or coronary artery distortion, as well as non–graft related factors.
Prompt diagnosis and treatment important
Currently, there is no consensus definition of PMI. Elevations in cardiac biomarkers may not be reliable for diagnosis after surgery, and pain management regimens may mask symptoms of ischemia, the writing group notes.
because timely diagnosis and treatment are key to a good clinical outcome,” they write.
Delay in urgent angiography has been associated with higher mortality; thus, a low threshold for action is encouraged for patients with suspected acute PMI.
Indications for urgent angiography include new ECG changes, chest pain with ongoing signs of ischemia, cardiac imaging abnormalities, cardiac rhythm abnormalities, significant elevations in cardiac biomarkers, and low cardiac output syndrome despite postoperative pressor support.
Patients with acute PMI and low cardiac output syndrome may require mechanical support when first-line treatment fails.
The writing group says fast and effective reperfusion of the ischemic zone, which is generally achieved by percutaneous intervention and, less often, by repeat surgery, is the key to a good clinical outcome.
The statement was prepared by the volunteer writing group on behalf of the AHA Council on Cardiovascular Surgery and Anesthesia; Council on Clinical Cardiology; Council on Cardiovascular and Stroke Nursing; and Stroke Council.
The research had no commercial funding. Disclosures for the writing group are listed with the original article.
A version of this article originally appeared on Medscape.com.
FROM CIRCULATION
Hairy moles may contain the cure for baldness: Study
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The researchers found that a specific molecule in those hairy moles “causes normally dormant and diminutive hair follicles to activate their stem cells for robust growth of long and thick hairs,” lead researcher Maksim Plikus, PhD, professor of developmental and cell biology at the University of California, Irvine, said in a statement.
The findings could lead to new treatments for the hair loss condition known as androgenetic alopecia, which researchers said occurs in both men and women. It is also known as male-pattern baldness in men.
The global team led by researchers at the university analyzed hair follicle stem cells and discovered that a molecule called osteopontin drives accelerated hair growth. Stem cells can develop into different kinds of cells, whether they are in the body or in a laboratory, and are often involved in regenerative or repair processes, according to the Mayo Clinic.
This latest study, published in the journal Nature, was done on mice. A drug company cofounded by Dr. Plikus said in a news release that it had further tested the hair growth technique on human hair follicles, and “the researchers were able to induce new growth by human hair follicles in a robust preclinical model.” The company, Amplifica, said in the release that it has an exclusive licensing agreement with the university for the new hair growth “inventions” described in the newly published findings.
Hair loss from androgenetic alopecia occurs in two out of every three men, according to the Cleveland Clinic. Amplifica said the condition affects an estimated 50 million men and 30 million women in the United States.
The hair loss and thinning can begin as early as the late teens, the Cleveland Clinic says. The condition is progressive and can follow a specific pattern, such as the hairline creating an “M” or “U” shape midway through the process toward complete baldness on the top of the head, with a remaining thin band of hair around the sides of the head.
A version of this article first appeared on WebMD.com.
.
The researchers found that a specific molecule in those hairy moles “causes normally dormant and diminutive hair follicles to activate their stem cells for robust growth of long and thick hairs,” lead researcher Maksim Plikus, PhD, professor of developmental and cell biology at the University of California, Irvine, said in a statement.
The findings could lead to new treatments for the hair loss condition known as androgenetic alopecia, which researchers said occurs in both men and women. It is also known as male-pattern baldness in men.
The global team led by researchers at the university analyzed hair follicle stem cells and discovered that a molecule called osteopontin drives accelerated hair growth. Stem cells can develop into different kinds of cells, whether they are in the body or in a laboratory, and are often involved in regenerative or repair processes, according to the Mayo Clinic.
This latest study, published in the journal Nature, was done on mice. A drug company cofounded by Dr. Plikus said in a news release that it had further tested the hair growth technique on human hair follicles, and “the researchers were able to induce new growth by human hair follicles in a robust preclinical model.” The company, Amplifica, said in the release that it has an exclusive licensing agreement with the university for the new hair growth “inventions” described in the newly published findings.
Hair loss from androgenetic alopecia occurs in two out of every three men, according to the Cleveland Clinic. Amplifica said the condition affects an estimated 50 million men and 30 million women in the United States.
The hair loss and thinning can begin as early as the late teens, the Cleveland Clinic says. The condition is progressive and can follow a specific pattern, such as the hairline creating an “M” or “U” shape midway through the process toward complete baldness on the top of the head, with a remaining thin band of hair around the sides of the head.
A version of this article first appeared on WebMD.com.
.
The researchers found that a specific molecule in those hairy moles “causes normally dormant and diminutive hair follicles to activate their stem cells for robust growth of long and thick hairs,” lead researcher Maksim Plikus, PhD, professor of developmental and cell biology at the University of California, Irvine, said in a statement.
The findings could lead to new treatments for the hair loss condition known as androgenetic alopecia, which researchers said occurs in both men and women. It is also known as male-pattern baldness in men.
The global team led by researchers at the university analyzed hair follicle stem cells and discovered that a molecule called osteopontin drives accelerated hair growth. Stem cells can develop into different kinds of cells, whether they are in the body or in a laboratory, and are often involved in regenerative or repair processes, according to the Mayo Clinic.
This latest study, published in the journal Nature, was done on mice. A drug company cofounded by Dr. Plikus said in a news release that it had further tested the hair growth technique on human hair follicles, and “the researchers were able to induce new growth by human hair follicles in a robust preclinical model.” The company, Amplifica, said in the release that it has an exclusive licensing agreement with the university for the new hair growth “inventions” described in the newly published findings.
Hair loss from androgenetic alopecia occurs in two out of every three men, according to the Cleveland Clinic. Amplifica said the condition affects an estimated 50 million men and 30 million women in the United States.
The hair loss and thinning can begin as early as the late teens, the Cleveland Clinic says. The condition is progressive and can follow a specific pattern, such as the hairline creating an “M” or “U” shape midway through the process toward complete baldness on the top of the head, with a remaining thin band of hair around the sides of the head.
A version of this article first appeared on WebMD.com.
FROM NATURE
Depression in People With Multiple Sclerosis
Many people believe that a diagnosis of MS and its progression can bring on depression. But is that really true?
This supplement examines the two-way connection between MS and depression. It gives you tools to actively look for signs of depression and develop techniques to more effectively communicate with and manage these individuals.
Many people believe that a diagnosis of MS and its progression can bring on depression. But is that really true?
This supplement examines the two-way connection between MS and depression. It gives you tools to actively look for signs of depression and develop techniques to more effectively communicate with and manage these individuals.
Many people believe that a diagnosis of MS and its progression can bring on depression. But is that really true?
This supplement examines the two-way connection between MS and depression. It gives you tools to actively look for signs of depression and develop techniques to more effectively communicate with and manage these individuals.