risk factors

Risk factors often associated with multiple sclerosis (MS), such as genetic background, obesity and smoking, contribute independently to the disease’s variability and may be an early influence on progression, a study reported. The retrospective study, “Multiple sclerosis risk factors contribute to onset heterogeneity,” was published in the journal …

The U.S. Food and Drug Administration (FDA) has issued a safety alert, warning about a rare but life-threatening risk of stroke and artery rupture in patients with relapsing forms of multiple sclerosis (MS) being treated with Lemtrada (alemtuzumab). Since Lemtrada’s approval in 2014 to treat relapsing MS, 13…

Diabetes, hypertension, and active smoking correlate with more brain shrinkage in multiple sclerosis (MS) patients, a new study shows. The study, “Assessing the burden of vascular risk factors on brain atrophy in multiple sclerosis: A case- control MRI study” was published in the journal Multiple Sclerosis and Related Disorders.

Researchers at Yale uncovered a way that high-salt diets may trigger inflammation and possibly contribute to the development of autoimmune diseases such as multiple sclerosis (MS). Their study, “Activated β-catenin in Foxp3+ regulatory T cells links inflammatory environments to autoimmunity,” was recently published in the journal Nature…

Bacteria that reside in human gut may trigger autoimmune reactions by producing human-like proteins that mimic a naturally occurring and crucial cell protein. Researchers at Queen’s University Belfast in Ireland report that patients with autoimmune disorders — such as multiple sclerosis (MS), rheumatoid arthritis, and ulcerative colitis — have…

Children exposed to certain air pollutants in urban areas or some household chemicals are at higher risk of developing multiple sclerosis (MS) during childhood or adolescence, two new research studies suggest. The studies “Urban air quality and associations with pediatric multiple sclerosis” and…

An international consortium studying more than 68,000 people, about half of them multiple sclerosis (MS) patients, found rare genetic variations that account for up to 5 percent of the heritable MS risk, a study reports. The newly discovered mutations were associated with either an increased…

Environmental changes, such as high temperatures and alterations in salt types and concentrations, trigger structural changes to myelin that may increase the risk of multiple sclerosis (MS), according to a new study. The research, “Pathological transitions in myelin membranes driven by environmental and multiple sclerosis conditions,” was…

High vitamin D levels predict better cognitive function, while smoking is associated with worse long-term cognitive disability in patients with clinically isolated syndrome (CIS), a study suggests. Data from the study was presented by Marianna Cortese, MD, PhD, from the Department of Nutrition, Harvard T.H. Chan…

Smoking and low levels of vitamin D can worsen prognosis for people with clinically isolated syndrome (CIS), researchers who developed a model for predicting long-term disability progression report. Their study, “Predicting the course of CIS patients adding…

A person’s genes influence the development of multiple sclerosis (MS), but so does the environment — both that in which an MS patient lives, and that which a patient creates through diet and other lifestyle choices, researchers said in a Thursday session at the 34th congress of the European…

Treatment of multiple sclerosis (MS) patients with rituximab does not increase breast cancer risk in women, and is not associated with a higher risk for malignant cancer of any type in men or women, when compared to Gilenya (fingolimod) or Tysabri (natalizumab), according to a nationwide study in…

The rate of kidney deterioration as a result of bladder dysfunction due to multiple sclerosis (MS) is low, affecting only 3 percent of the patients, a single tertiary center study shows. However, kidney deterioration is a slow process and detected only after 60 months of follow-up, highlighting the need for…

Smoking may increase multiple sclerosis (MS) disease activity, quicken disability progression, and speed the transition from relapsing to secondary progressive MS (SPMS) by as much as eight years, according to an MS Society review study. The review data shows that, although the U.K.’s National Institute for Health…

People who eat a healthy diet that includes foods such as vegetables, fish, eggs, poultry, and legumes may have a reduced risk of multiple sclerosis (MS), a study suggests. The study, “A healthy dietary pattern associates with a lower risk of a first clinical diagnosis of central nervous system…

Smoking increases the relapse rate in patients with relapsing-remitting multiple sclerosis being treated with Tysabri , an observational study suggests. Multiple sclerosis is a multifactorial disease associated with both genetic and environmental risk factors. Smoking, in particular, has been linked to numerous aspects of MS, including its development and progression. In a previous study, the research team looked at how smoking influences the relapse rate in RRMS patients being treated with interferon beta. From more than 800 patients, they found that smoking one pack per day (about 20 cigarettes) essentially interfered with the positive effect of the IFN-beta treatment and increased the relapse rate by 27%. The researchers then questioned whether the same was true for other treatments. Tysabri, developed by Biogen, is a monoclonal antibody that targets the alpha-4 integrin protein. By interfering with this molecule, the therapy prevents white blood cells from moving into the central nervous system, suppressing the immune reaction that contributes to MS symptoms. In the study, 355 Tysabri-treated RRMS patients from the Danish Multiple Sclerosis Centre were assessed. To gather information on smoking habits and body mass index, the patients filled out a 100-question survey. Data was collected between the start of the treatment and a two-year follow-up visit. Results showed that smoking one pack of cigarettes per day increases the relapse rate by 38% in RRMS patients on Tysabri. This increase in relapse rate takes into account both sex and age at the start of treatment, since age can affect the relapse rate. For example, an increase in age by one year raises the number of relapses by 2%. The researchers also looked at the relationship between smoking and the presence of two immune-related alleles: HLA-DRB1*15:01 and HLA-A*02:01. Previous studies showed that HLADRB1*15:01 is associated with an increased risk of developing MS, while HLA-A*02:01 is linked to a decreased risk. Although previous studies reported a link between smoking and these two alleles in MS patients, the current study did not find an association between smoking and carrying either of these alleles. Based on the results, the researchers concluded that smoking significantly increases the relapse rate in RRMS patients receiving Tysabri. According to the team, the results "add important information that hopefully will sharpen the focus on the overall harmful effects of smoking in MS patients."

Vitamin D3 insufficiency increases multiple sclerosis (MS) susceptibility in a gene and sex-dependent manner, a mouse study suggests. The study with that finding, “Sex-Specific Gene-by-Vitamin D Interactions Regulate Susceptibility to Central Nervous System Autoimmunity,” by researchers at the University of Vermont, was published in the journal Frontiers in…

A genetic variant close to a gene called interferon regulatory factor 6 (IRF6) may help to predict those multiple sclerosis (MS) patients most at risk of liver injury while using interferon-beta therapies, a study reports. The study, “Common variation near IRF6 is associated with IFN-β-induced liver injury in multiple sclerosis” was published…

Evaluating the local differences in iron accumulation in the deep gray matter of the brain using a special magnetic resonance imaging (MRI) technique, may help identify multiple sclerosis (MS) patients at greater risk for disease progression and disability, a study reports. The study “Brain Iron by Using Quantitative MRI…

An association between high blood pressure and reduction of brain integrity in multiple sclerosis (MS) patients highlights the importance of blood pressure management by MS healthcare providers. The severity of MS varies greatly. Although this is still poorly understood, certain factors, such as obesity and high blood pressure, are suspected…

Getting plenty of sun, eating fresh fruits regularly and drinking coffee daily are associated with a lower risk for multiple sclerosis (MS) among adults in Saudi Arabia — while eating a lot of fast-food raises that risk, researchers report. Their study, “Environmental exposures and the risk of…

Exposure to organic solvents like such as paint or varnish greatly raises the risk of multiple sclerosis (MS), particularly in people who smoke or have a genetic susceptibility to the disease, a large-scale Swedish study reports. In fact, solvent exposure — linked to occupation, like being a painter or working…

Statistics show that men are three times less likely than women to develop multiple sclerosis. Research has shown that men also develop MS at a later age than women and that their disease is more progressive. Could this all be related to “low T,” or low testosterone? Researchers…

Protecting the public against an outbreak like the swine flu using GlaxoSmithKline‘s vaccine Arepanrix — or a similar vaccine with an AS03 adjuvant delivery system — does not increase a risk of multiple sclerosis (MS), a population study conducted in Canada reports. The study, “Registry Cohort Study to Determine Risk…

Greater exposure to sunlight during the winter months — part of a person’s lifetime exposure to ultraviolet radiation — can help to lower the risk of multiple sclerosis (MS), a large U.S. cohort study suggests. The study, “Lifetime exposure to ultraviolet radiation and the risk of multiple sclerosis in…

Long-term exposure to three common air pollutants — fine particulate matter, nitrogen dioxide, and ozone — were not found to be “convincingly” linked to incidence of multiple sclerosis (MS) in a large population study conducted in Canada. The study, “Long-term exposure to air pollution and the incidence of multiple sclerosis: A…

Scientists have uncovered the molecular mechanism by which the genetic variant HLA-DRB1*15:01 is the strongest risk factor for multiple sclerosis, new research shows. Analyzing several studies, researchers found that the risk linked…

Discovery of ‘Fiery’ Cell Death Mechanism May Be MS ‘Game-Changer’ Researchers at the University of Alberta have discovered a process that may be responsible for destroying myelin. Better than that, they also think they have a way of limiting that process using a medication. The inhibitor, known…

Young adults at age 20 who are obese and smoke are not only at a higher risk of developing relapsing multiple sclerosis — those who become MS patients after age 20 are also more likely to advance to secondary progressive MS more quickly, researchers in Sweden report. But the link…

For ambulatory multiple sclerosis patients with mobility problems, perceptions of being at risk of falling are as important as the risk due to their physical condition — and both should be tested when evaluating fall risk in this patient population, a study reports. The study, “The relationship between physiological…