May 20, 2022 News by Lindsey Shapiro, PhD Genetic Indicators of High BMI in Childhood Linked to Higher MS Risk Genetic variants that contribute to a high body mass index (BMI) during childhood are associated withĀ an increased risk of developing multiple sclerosis (MS), a study found. The relationship is likely influenced by the fact that a higher BMI in childhood is linked to obesity in adulthood and a ālonger…
January 7, 2021 News by Aisha I Abdullah PhD Obesity, High BMI Linked to Greater MS Risk, Autoimmune Activity Obesity and a higher body mass index (BMI) are associated with both increased multiple sclerosis (MS) risk and harmful autoimmune activity that is induced by leptin, a hormone secreted by fat cells, a study finds. These results indicate that leptin, which helps regulate…
July 6, 2020 News by David Melamed, PhD Higher BMI as Teenagers Raises Risk of MS for Men, Study Finds Young men, ages 16 to 20, with a higher the body mass index (BMI) are at greater their risk of being diagnosed with multiple sclerosis (MS) later in life, regardless of physical fitness, according to a Swedish study. Risk rose across “the entire BMI range,” its researchers reported,…
January 24, 2020 News by Marisa Wexler, MS Gene Variants Linked to High Childhood BMI Point to Higher MS Risk, Study Finds Genetic variations that increase body mass index (BMI) in childhoodĀ are associated with a higher risk of multiple sclerosis (MS) regardless of a person’s vitamin D levels, a study found. The study, “BMI and low vitamin D are causal factors for multiple sclerosis,” was published in…
April 12, 2019 News by Marisa Wexler, MS Excess Body Fat Spurs Disease Progression by Impact on Immune Cells, Study Suggests A link between fat molecules calledĀ ceramides andĀ worsening disease in overweight and obese people with multiple sclerosis appears to exist, a study reports, with its findings suggesting that ceramides prompt the growth of immune cells calledĀ monocytes, which in turn spurs disease progression. These results also strengthen the likelihood thatĀ lifestyle factors, like diet and weight, can act as disease modifiers, its researchers said. High body mass index has been linked to the risk of developing MS, but for reasons that aren't clear. One idea is that weight-induced differences in lipids (fat molecules) in the blood, because they are involved in several cellular signaling processes, may affect MS and its course in people with higher BMIs. To test this hypothesis, a team led by researchers atĀ the Advanced Science Research Center (ASRC) at The Graduate Center and at the Icahn School of Medicine at Mount Sinai analyzed 54 patients with relapsing-remitting MS (MS), ages 18 to 60, and with normal or high BMIs (27 people in each group). Participants were followed for two years. BMI is a measure of body fat based on height and weight. A normal BMI is defined as one between 18.5 and 24.9, while a person is considered overweight with a BMI of 25ā29.9, and obese it is 30 or higher. Researchers took blood samples, and looked for differences between the groups in terms of both immune cells and blood lipid profiles. They then validated their findings in a separate group of 91 RRMS patients. Patients with high BMIs tended to have more monocytes than those with normal BMIs. Monocytes can travel through the blood to tissues where they develop into macrophages, immune cells with various functions that are best known for "eating" invading bacteria. Monocytes can also travel to the brain and damage nerve fibers. Overweight and obese patients also had significantly higher levels of ceramides compared with normal-weight patients, and the researchers wondered if a link might exist between the two. Through a set of experiments in cells, they discovered that ceramides cause epigenetic changes in monocytes; that is, they alter the way their genomes are "read," so they alter gene activity. Specifically, ceramide-treated cells showed a type of epigenetic change called methylation ā which generally turns genes "off" ā in genes that normally help prevent cells from dividing. Conceptually, these genetic changes serve to unleash monocytes, leading them to grow more (proliferate) than they otherwise might. The researchers also found more methylation on the genomes of monocytes from high-BMI patients than those from low-BMI patients, and they noted that the overweight or obese patients also tended to have greater disease activity, worse disability progression, and more brain lesions on MRI (magnetic resonance imaging) scans on follow-up. Finally, the researchers tested a mouse model of MS, giving one group of mice a standard diet and another a high-fat diet. Mice fed the high-fat diet were found to have greater disease severity, more brain lesions, and more monocytes, confirming the findings seen in MS patients. "This study gives us a much-needed view into the environmental influences that can affect and change the behavior of cells in an individual's body," Kamilah Castro, the study's first author, said in a press release. "Our findings suggest that increased levels of saturated fat as a result of dietary habits are one likely cause of the epigenetic changes that advance MS, which gives us a starting point for a potential intervention." According to the team, the findingsĀ support the concept of nutri-epigenomics:Ā that is, the ability of food to alter the way the genetic information is interpreted by each cell, and suggest that "weight management and dietary intervention" might affect MS prognosis. One limitation was the study's small size, its researchers noted. "While we consider our results ā¦ very exciting and mechanistic, we acknowledge that the potential consideration of ceramide levels as biomarkers for disease progression in MS would require validation ... using larger cohorts with a longitudinal and/or cross-sectional design," they concluded. "It will also be important to evaluate the effectiveness of dietary intervention (with an emphasis on the reduction of specific classes of saturated fats), as potential modulator of plasma ceramide levels and possibly of disease course in MS patients."
August 28, 2018 News by Joana Carvalho, PhD Exercise Fights Fatigue and Depression in MS Patients, Study Reveals Physical exerciseĀ fights fatigue and depression in patients with multiple sclerosis (MS), a new study reveals. Remarkably, these positive outcomes in psychological health can be achieved without significant alterations in the patient’s body weight or body mass index (BMI), further supporting the idea that exercise could be…
March 1, 2018 News by Ana Pena PhD Young Researchers in Multiple Sclerosis Earn Awards at ACTRIMS Forum 2018 The Americas Committee for Treatment and Research in Multiple Sclerosis (ACTRIMS) hasĀ awarded five young investigators for their research work on multiple sclerosis (MS). The awards were presented at theĀ ACTRIMS Forum 2018, held Feb. 1-3 in San Diego,…