Changing the gut’s microbial community (microbiota) with antibiotics prevented the development of multiple sclerosis (MS), but not its progression after the disease was established, data from a mouse model of the disease show. These findings support evidence that microbiota manipulations affect inflammatory immune responses involved in MS development, but…

A short-chain fatty acid produced by gut bacteria helps to counteract inflammatory responses in multiple sclerosis (MS) by promoting greater numbers of regulatory immune cells, a study reports. But the bacterial composition of the gut (its microbiome) of MS patients is deficient in bacteria that produce this acid —…

Editor’s note: “Need to Know” is a series inspired by common forum questions and comments from readers. Have a comment or question about MS? Visit our forum. This week’s question is inspired by “Newly Diagnosed MS Patients Show Changes in Gut Microbiome, Study Says,” from Dec. 3, 2019.

As strange as it is to think about, many bacteria live in the human body, most of which are found in the gut (often referred to as the gut microbiome). These bodily roommates affect health in many ways that are only beginning to be understood. …

Immune cells in the intestine may reduce neuroimflammation in multiple sclerosis (MS) patients, a pre-clinical study suggests. Moreover, the augmented number of these cells was sufficient to suppress brain inflammation in an MS mouse model. The findings were reported in the study “Recirculating Intestinal IgA-Producing Cells Regulate Neuroinflammation via…

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…

My life has been in limbo for several months and it’s been a dark and scary place to be. One quickly learns that life can be unpredictable when living with multiple sclerosis. Each day can bring different challenges and life will never be…

Specific gut bacteria may drive the progression of multiple sclerosis, according to a study showing that two bacterial species made the disease worse in a mouse model of MS. Researchers at the University of California, San Francisco also pinpointed a species — found in lower numbers in MS patients —…

A bacteria present in the gut, called Prevotella histicola, prevented multiple sclerosis from developing in a preclinical mouse model, found researchers at the Mayo Clinic in Rochester, Minnesota, along with colleagues at the University of Iowa. Current research suggests that alterations to the gut microbiome residing in human intestines may potentially trigger inflammatory diseases such as MS. In an attempt to identify which gut resident bacteria are capable of modulating immune responses, researchers studied cultured small pieces of intestine tissue extracted from biopsies of patients with celiac disease. The team then isolated three bacteria strains and found that one of species — P. histicola — had the capacity to suppress MS in a preclinical animal model of the disease. “This is an early discovery but an avenue that bears further study," Dr. Joseph Murray, a Mayo Clinic gastroenterologist and the study's lead author, said in a press release. "If we can use the microbes already in the human body to treat human disease beyond the gut itself, we may be onto a new era of medicine. We are talking about bugs as drugs." By investigating how P. histicola modulated immune responses to suppress MS, researchers found that bacteria decreased the expression of two pro-inflammatory cytokines – interferon-gamma and interleukin (IL)-17. Overall results show that P. histicola has immune modulatory activity and can suppress abnormal immune responses, which ultimately prevent autoimmunity. This supports the idea that maintaining a healthy microbial community within our intestines is a potential therapeutic strategy for MS. "Our work is a classic example of a bedside-to-bench and potentially back to bedside study. Recent MS microbiome studies have shown the lack of Prevotella genus in patients with the disease and an increase when patients were treated with disease-modifying drugs," said Ashutosh Mangalam, the study's first author and an assistant professor of pathology at University of Iowa's Carver College of Medicine. "And it's not just for MS, because this may have a similar modulating effect on other nervous system and autoimmune diseases."

University of California medical school researchers are looking for multiple sclerosis patients who want to participate in an international study of the bacteria that live in our gut. The University of California at San Francisco team decided to study the gut microbiome after recent evidence suggested that it is critical in…

The past year has taken its toll on my digestive system. I’ve experienced alarming amounts of pain, bloating, diarrhea, and more fatigue than I normally experience from MS. All of these issues caused great stress both emotionally and physically, so it was no surprise when my…

Harold Weiner, MD, believes in using probiotics to help treat multiple sclerosis. He is such a believer that he did a presentation on the subject — “Probiotics in Multiple Sclerosis” — at the just-concluded Americas for Treatment and Research in Multiple Sclerosis (ACTRIMS) 2017 Forum in Orlando. The event…

Immune cells, believed to drive autoimmunity, are selectively increased in the gut of patients with multiple sclerosis (MS), along with lower numbers of cells controlling inflammation, suggesting that immune processes in the gut impact MS disease mechanisms. The study, “The role of gut immunity in multiple sclerosis patients,”…

Gut microbiota (the ecological community of microorganisms that live in the gut) may be an important environmental risk factor for multiple sclerosis (MS). This suggests that strategies to correct the imbalance in the normal intestinal flora, also known as microbial dysbiosis may help treat or event prevent MS.

Gut bacteria and health have been topics of considerable scientific speculation in recent years, and the field of multiple sclerosis (MS) research is no exception. But what do we really know about MS and our intestinal inhabitants? A review, “Emerging Concepts on the Gut Microbiome and Multiple Sclerosis,” published in…

Quite a mixed bag in the pick of the week’s news: A drug in development, microbiota in the gut, statins and MS, DMTs and cognitive skills, and images of depression. Endece Granted New U.S. Patent for NDC-1308, Therapy to Induce Remyelination in MS This is a bit of an…

Fecal samples from a group of people with relapsing-remitting multiple sclerosis (RRMS) showed evidence of a different gut microbiota than that found in healthy controls, and may be a non-genetic reason for the altered immune system responses seen in MS patients. The study, “Multiple sclerosis patients have…

The Multiple Sclerosis Society of Canada and the Multiple Sclerosis Scientific Research Foundation recently announced the funding of new research on pediatric multiple sclerosis (MS) and on the role played by the gut microbiome in brain and autoimmune diseases. Although only around 5% of all newly diagnosed MS cases…

There has been a great deal of recent interest in the connection between nervous system function and the complex bacteria that are found in the gastrointestinal system, known as the gut microbiome. Some scientists believe that differences in the type of bacteria found in the gut may underlie neurological disease. In…

People with multiple sclerosis have high levels of pro-inflammatory TH17 immune cells in their intestines that correlate with change in the micro-organism mix in their gut and the levels of their disease activity, a study reports. Researchers said the findings suggest that diet, probiotics and therapies that regulate TH17 cells could help treat MS. Probiotics are supplements containing beneficial bacteria. The study, “High frequency of intestinal TH17 cells correlates with microbiota alterations and disease activity in multiple sclerosis,” was published in the journal Science. Research has shown that TH17 cells, also known as T helper 17 cells, play a role in the development of MS. In fact, they were the first harmful immune T-cells to infiltrate the central nervous system, according to studies in animals Where TH17 cells become activated has been unclear, however. Studies in mice suggested it was mainly in the small intestine. Research has also indicated that their activation increases the potential for a person to develop an autoimmune brain disease like multiple sclerosis. An autoimmune disease occurs when the immune system, which defends the body against disease, decides that a person's healthy cells are foreign, and attacks those cells. Researchers decided to see if the findings in mouse models of MS applied to people with the disease. They discovered a link between higher levels of TH17 cells in MS patients' intestines and autoimmune brain problems. They also found a correlation between higher levels of TH17 cells and changes in patients' gut microbiome. The team then identified which bacteria were changing in the gut. Patients with increased levels of TH17 cells and higher disease activity had a higher ratio of Firmicutes to Bacteroidetes bacteria and more Streptococcus strains in their gut, particularly Streptococcus mitis and Streptococcus oralis. Previous studies have shown that these species promote TH17 cell differentiation in humans. Cell differentiation involves a cell transforming from one cell type to another — usually a more specialized type. This dramatically changes a cell's size, shape, metabolic — or fuel-burning — activity, and responsiveness to signals. Some studies have suggested a link between T-cell differentiation and brain autoimmune diseases. “On the basis of our findings, we speculate that, under certain conditions, or because of still unknown virulence factors, these Streptococcus strains can colonize the small intestine and favor TH17 cell differentiation in the human gut mucosa [linings],” researchers wrote. In addition to more Streptococcus bacteria, the team detected lower levels of Prevotella bacteria in MS patients with disease activity than in healthy controls or patients with no disease activity. This decrease may also promote TH17 cell differentiation because “Prevotella is capable of producing the anti-inflammatory metabolite propionate that limits intestinal TH17 cell expansion in mice," the researchers wrote. Overall, the team concluded that “our data demonstrate that brain autoimmunity is associated with specific microbiota modifications and excessive TH17 cell expansion in the human intestine.” The findings suggest that regulating TH17 cell expansion, along with changes in diet aimed at regulating intestinal linings, could be ways to help treat MS.

As all good things must come to an end, so did our epic overseas adventure in a recreational vehicle that was too tiny to live in and too big to drive into any European village. We devoted those five weeks to quality time with family, unplugging from devices, and…

Among immigrants to Canada, the risk of multiple sclerosis (MS) is higher for those who have spent a greater portion of their life in Canada, a new study reports. The study, “Proportion of Life Spent in Canada and the Incidence of Multiple Sclerosis in Permanent Immigrants,”…

Sergio E. Baranzini, PhD, a scientist at the University of California, San Francisco (UCSF), is this year’s winner of the Barancik Prize for Innovation in MS Research, awarded by the  National Multiple Sclerosis Society (NMSS) for his groundbreaking discoveries in multiple sclerosis (MS). His efforts have helped…

Foods that promote inflammation appear to contribute to the development over time of depression and anxiety in people with multiple sclerosis (MS), a study that followed patients for 10 years reports. A pro-inflammatory diet, however, was not linked to fatigue, a common MS symptom. “If the relationship with…

A diet low in wheat was linked to reductions in circulating inflammatory immune cells and improvements in pain-related life quality among a small group of people with relapsing-remitting multiple sclerosis (RRMS), according to findings from a pilot clinical trial conducted in Germany. The trial’s findings build upon another recent…

Throughout 2023, Multiple Sclerosis News Today brought consistent coverage to our readers of the latest scientific research, developments in treatment, and clinical trials for multiple sclerosis (MS). Here is a list of the top 10 most-read stories we published last year, along with a brief description. We look…

A commercial probiotic supplement containing the yeast Saccharomyces boulardii significantly eased pain and fatigue, and improved mental health and quality of life, in people with relapsing-remitting multiple sclerosis (RRMS), according to data from a clinical trial in Iran. The probiotic, BioDigest, also reduced inflammation and oxidative stress, a form…

An anti-inflammatory diet combined with synbiotic supplements eased fatigue, pain, sexual dysfunction, and bladder and bowel problems in people with progressive forms of multiple sclerosis (MS) in a small clinical trial. Synbiotics contain probiotics, healthy bacteria for the gut, and prebiotics, or plant fibers that feed probiotics and help…

A lab-engineered probiotic, composed of live bacteria that colonize the gut, was able to ease signs of disease in a mouse model of multiple sclerosis (MS), according to recent research. After discovering that a metabolite called lactate could activate immune signaling pathways that help to curb autoimmunity, scientists specifically…

Limiting calorie intake over two days of each week for three months led to beneficial immune and metabolic changes, as well as improvements in cognitive function, among people with relapsing-remitting multiple sclerosis (RRMS), a study found. A restrictive diet also promoted a better body composition, namely a reduction in…