risk factors

A strong immune reaction to an Epstein-Barr virus infection and low levels of vitamin D appear to increase the risk of multiple sclerosis (MS) independent of each other, said researchers in a presentation at the 7th Joint ECTRIMS-ACTRIMS Meeting in Paris, France. Previous studies have shown that serum antibody titers…

The types of brain and spinal cord inflammation patches that occur in a precursor condition to multiple sclerosis help determine whether a person develops MS in the next 15 years, a British neurologist reported today. Wallace J. Brownlee of the University College London Institute of Neurology made the observation in…

A higher intake of dietary sodium, most often in the form of salt, does not increase the risk of developing multiple sclerosis (MS), Norwegian researchers concluded after analyzing data from more than 175,000 women. Their findings counter earlier evidence from experimental studies in cells and MS mouse models that suggested…

Diet can play an important role in whether children with relapsing multiple sclerosis have a relapse, researchers at the University of California, San Francisco argue. Their study demonstrated that a diet with a lot of fat increases the risk of a youngster having a relapse by 56 percent, with saturated fat tripling the risk. Eating a lot of vegetables, on the other hand, cuts the risk in half, the team said. Since children with MS tend to have relapses more often than adults, the researchers figured they would be a suitable group to study diet's impact on relapse. They recruited 219 children with relapsing-remitting MS or clinically isolated syndrome from 11 centers across the U.S. Clinically isolated syndrome is a condition that can evolve in MS. The research team use a questionnaire known as the Block Kids Food Screener to analyze what the youngsters ate. They tracked the children an average of almost two years, which was plenty of time for relapses to occur. And, in fact, they did occur in 42.5 percent of the group. It turned out that fat had a particularly devastating effect on the youngsters' relapse rate. For every 10 percent increase in energy intake that came from fat, there was a 56 percent increase in the children's risk of having a relapse. Saturated fats were the biggest driver of risk. When researchers look only at these fats, they discovered that the risk more than tripled. Examples of saturated fats include processed meats such as sausages, ham, and burgers, butter, hard cheeses, and whole milk. Vegetables had the opposite effect on risk, the researchers observed. Using a cup equivalent as a standardized measure, they learned that for every additional cup of vegetables the children ate, the risk of a relapse dropped in half. To exclude the possibility that other factors influenced the results, the team included information about age, sex, ethnicity, duration of disease, body mass index, treatment, and D-vitamin levels in their analyses. This did not influence the results. The team also looked at whether other food components, such as sugar, iron, fruit and fiber, would affect the risk of relapse. They did not find any links. Although the risk associations were strong, the researchers cautioned that the study's observational design meant that it was not able to prove that fat causes relapses. But there are several ways that fat could play a role in disease processes, they argued. For instance, high fat intake triggers the release of inflammation-promoting molecules. It also affectsf gut bacteria that are linked to immune processes. Vegetables lower the risk of inflammation and immune problems, the team said. In an accompanying editorial, Dr. Kathryn Fitzgerald of the Johns Hopkins School of Medicine said the study had important limitations. Researchers gathered information on the children's diet only in the week before they enrolled in the study. This might not adequately capture more long-term dietary patterns, she said. And fat is not simply fat, she pointed out, arguing that fish oil is believed to help MS patients. Although the California research offers insight, she called for long-term studies to define diet's role in MS.

Women with low levels of vitamin D in their blood are more likely to develop multiple sclerosis (MS) later in life, finds a large-scale study on women in Finland. The study, “25-Hydroxyvitamin D deficiency and risk of MS among women in the Finnish Maternity Cohort,” appeared in the journal…

Having a concussion when you’re 11 to 20 years old could increase your risk of developing multiple sclerosis later, a Swedish study suggests. The collaboration between Örebro University and Karolinska Institutet showed that a concussion in adolescence raised the risk of developing MS by 22 percent. Two or more concussions…

Past infection with the Epstein-Barr virus (EBV) has been reported to increase the risk for multiple sclerosis (MS). Now, researchers have found a link between EBV and MS in three racial-ethnic groups, with African-Americans and Latinos showing a higher risk for MS than Caucasians.

The risk of people with multiple sclerosis developing cancer is higher if they have used immunosuppressants than if they haven’t, according to a study that followed more than 1,000 patients for a decade. The findings indicate that the often discussed association between MS and cancer may stem from older types of…

Last week saw much of the Pacific Northwest blanketed by smoke from wildfires in British Colombia. As I pondered the gray haze Thursday, I recalled a piece from a fellow columnist in June about air pollution and MS. In addition to MS, I also have asthma. Therefore, the health…

Women who breastfeed for 15 months or longer may have a lower risk of developing multiple sclerosis (MS) than those who breastfeed for shorter periods or not at all, according to a recent study. The study also suggests that women who had their first…

A variation in the NLRP1 gene is associated with multiple sclerosis that runs in families, Slovenian researchers report. Their study, “Identification of rare genetic variation of NLRP1 gene in familial multiple sclerosis,” was published in the journal Scientific Reports. The research was led by Dr. Borut Peterlin of Ljubljana University Medical Center's Clinical Institute of Medical Genetics. Scientists believe MS arises from a combination of a person's genetic background and the environment. Although previous studies have suggested that genes are behind MS that runs in families, researchers had yet to confirm that hypothesis. The Slovenian team wanted to identify any genes that were at play in both the MS and malignant melanoma that two siblings had. Although disease surveys indicate the two conditions can occur together, scientists had been unable to identify a shared cause for the two conditions. Interestingly, research has shown a link between a person's susceptibility to MM and a mutation of the NLRP1 gene. And recent studies have indicated that NLRP1 plays a role in the development of MM. The Slovenian team decided to evaluate the association between an NLRP1 mutation and multiple sclerosis in two groups. One consisted of 38 people with MS whose disease ran in the family. The other was 44 people with MS whose disease did not run in their family. Researchers used genomic, molecular biology and immunology measurements to decide whether there was a link between the mutation and MS. They found a connection between the mutation and MS that runs in families. The mutation affects the function of the protein the gene generates — a protein known to be involved in inflammatory processes. Researchers also found other NLRP1 mutations in patients with and without a family history of MS that they believe could be involved in the development of the disease. In addition, the team found evidence of a connection between MS associated with NLRP1 mutations and the development of MM. That evidence involved immune responses to the two conditions. Stimulating the production of immune-system components known as peripheral blood mononuclear cells, or PBMCs, triggered immune responses in MS patients with NLRP1 mutations. The responses included increased production of the pro-inflammatory cytokine IL-1β. Higher levels of that protein have been found in MM tissue. PBMCs include such immune cells as lymphocytes, monocytes, and macrophages. "IL-1β has been implicated in a variety of inflammatory and neurodegenerative processes occurring in MS,” the researchers wrote. Overall, the findings demonstrated an association between MS running in families and MM, they said. And the genetic link between the two may be the NLRP1 gene mutation, they added. The team said scientists might be able to develop a treatment for MS by finding a way to lower the increased production of IL-1β that NLRP1 mutations trigger.

Cigarette smoking is certainly no good for you, but it may not necessarily make your primary progressive multiple sclerosis (PPMS) worse, a new study finds. The study, “Smoking does not influence disability accumulation in primary progressive multiple sclerosis,” appeared in the European Journal of Neurology. It contradicts what was…

In case you missed them, here are some news stories that appeared in MS News Today that caught my eye over the past week. **** Air Pollution May Trigger Relapses in MS Patients, French Study Finds Attention if you live in location where the air…

In case you missed them, here are some news stories that appeared in MS News Today that caught my eye over the past week. Ocrevus Market Entry Already Changing Dynamics in MS Treatment Choices, Spherix Analysis Suggests   Are pills, shots, or infusions the therapy…

A study of nearly 600 children with multiple sclerosis reported that genes linked to low vitamin D levels and obesity contribute to the risk of developing MS in childhood. While the two are also risk factors for adult-onset MS, obesity and low vitamin D have a larger risk impact on children than adults. The…

A large-scale study revealed potential adverse reactions to beta-interferon (IFN-β) therapy, one of the most common treatments used for relapsing-remitting multiple sclerosis (RRMS). According to the study published in the journal Neurology, patients have an increased risk of stroke, migraine, depression, and of developing abnormalities in the blood. In…

A variation in a gene that likely promoted resistance to malaria in Sardinia may have increased the risk of people there developing autoimmune diseases such as multiple sclerosis (MS) and systemic lupus erythematosus (SLE). The study, “Overexpression of the Cytokine BAFF and Autoimmunity Risk,” was published in The…

The risk of children developing multiple sclerosis (MS) later in life has no link to how much sunlight their mothers were exposed to during pregnancy, a Polish study found. The study, “Month of birth and level of insolation as risk factors for multiple sclerosis in Poland,” appeared in the journal…

Smoking can kill off the immune cells that commonly protect people from multiple sclerosis (MS) and other autoimmune diseases, say researchers at the University of Copenhagen — a finding that may lead to new ways of treating such illnesses. Their study, “Smoking reduces circulating CD26hiCD161hi MAIT cells in healthy…

A combination of mutations in two genes makes members of a Canadian family a 7-in-10 chance of developing multiple sclerosis (MS) — a radical increase from the 1-in-1,000 risk among the general population, according to a study that illustrates the huge impact certain genes can have on disease development. Interestingly, the…

A popular theory of what contributes to developing multiple sclerosis is a disease called mononucleosis (also known as glandular fever), which can be caused by Epstein-Barr virus (EBV). It is thought that the virus weakens our defenses in the blood-brain barrier, allowing white blood…

The use of antibiotics in childhood, which alters the microbiome — or natural bacteria flora in the gut — may increase the risk of multiple sclerosis (MS), inflammatory bowel disease (IBD) and other inflammatory diseases, according to an Australian study. The mouse study, “Early-life antibiotic treatment enhances the…

Mothers with chronic inflammatory and autoimmune diseases, such as multiple sclerosis, have a higher risk of having children with attention-deficit/hyperactivity disorder (ADHD), according to a Norwegian study. The findings were reported in a study titled “Attention-Deficit/Hyperactivity Disorder in Offspring of Mothers With Inflammatory and Immune System Diseases”…

A person unlucky enough to have two specific gene variants is at significantly higher risk of developing multiple sclerosis (MS), according to a study. The research, which gave scientists insight into the processes that cause MS, also suggested that another mutation increased the effects of a known MS risk gene. The…

People with multiple sclerosis (MS) are more likely to develop kidney or bladder stones than those without MS, a new study concludes. The report, “Multiple sclerosis and nephrolithiasis: a matched-case comparative study,” appeared in the journal BJU International. Stone disease is highly lethal in patients with spinal cord injury (SCI), a condition that,…

Multiple sclerosis (MS) patients who smoke have a significantly worse quality of life than non-smoking MS patients, concludes a new study. Researchers presented the study, “Smokers with MS have greater decrements in quality of life and disability than non-smokers,” at the Americas Committee for Treatment and Research in…

In a U.S. nationwide case study, a team of researchers found evidence for a potential link between viral infections during childhood, vitamin D deficiency, and the risk of developing multiple sclerosis (MS). The study, “Environmental risk factors associated with pediatric MS: The role of remote viral infections and vitamin D revisited,” was recently…

A 60-year follow-up study of nearly 1,400 Norwegian patients with multiple sclerosis (MS) analyzed their survival and risk of dying starting with the onset of the disease through its progression. The study, “A 60- year follow-up on survival and cause of death in multiple sclerosis in Western Norway,” was recently…

Ten years after completing treatment with Novantrone (mitoxantrone), a chemotherapy drug, multiple sclerosis (MS) patients showed evidence of markedly lower annualized relapse rates, but the therapy’s effects began to wane after five years, a study presented at ACTRIMS 2017 Forum reported. The study also assessed how Novantrone affects disease progression in primary and secondary progressive…

Multiple sclerosis (MS) is thought to be caused by genetic factors, but environmental cues are increasingly recognized to have an impact on disease onset and development. One environmental factor suggested to play a role in MS is infectious agents, such as viruses. Now, different teams of scientists have explored the…