Patricia Inacio, PhD,  science writer—

Twenty-four people have now received the multiple sclerosis and psoriasis therapy KY1005 in a Phase 1 clinical trial, according to its developer, Kymab. The Cambridge, England, company creates human antibody drugs for autoimmune diseases. The trial will focus on KY1005 as a psoriasis therapy, although its mechanism of action should work…

A new study draws a reverse link between the number of MRI scans of multiple sclerosis patients who are on interferon-beta 1a and doctors declaring there is evidence of the patients’ disease worsening. When doctors looked at one scan, rather than multiple ones, they were more likely to say that…

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.

A new study on rats indicates that the antidepressant Luvox promotes the production of the neuron-protecting coating that is deficient in multiple sclerosis. It also significantly decreased the severity of the animals' disease, researchers said, adding that Luvox promoted the production of the protective coating by helping stem cells evolve into oligodendrocytes, or cells that generate what is known as the myelin sheath. Patients with MS often experience anxiety and depression, with recent studies suggesting their rate of depression is three times higher than those with other long-term medical conditions. In addition to drugs targeting the underlying mechanisms of MS, such as inflammation and myelin loss, doctors often recommend that patients take antidepressants. The most common treatments they prescribe for moderate or severe depression are a class of serotonin re-uptake inhibitors that include Luvox. Few studies have looked at antidepressants' effects on animal models of MS, however. That prompted researchers to investigate Luvox's impact on both laboratory and rat models of the disease. Researchers used embryonic neural stem cells in their study. Luvox prompted laboratory stem cells to evolve into other types of cells, including neurons, oligodendrocytes, and astrocytes, which have several roles, including supporting and repairing neurons. Prozac also promoted stem cell differentiation — but at levels 10 times higher than those of Luvox. A key finding was that that Luvox significantly decreased the severity of the disease in the rats. Another important finding was that Luvox significantly reduced demyelination and immune cell infiltration in the rats' spinal cords. It also decreased the rats' expression of pro-inflammatory proteins known as cytokines. Overall, this study “demonstrated that fluvoxamine, in addition to its confirmed role in mood disorder therapy, could serve as a candidate clinical treatment for attenuating [reducing] neuro-inflammation and stimulating oligodendrogenesis in neurological diseases, particularly MS patients.”

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…

Air pollution, particularly tiny inhalable particles around 10 micrometers in diameter, is a likely trigger for relapses in multiple sclerosis patients, a French study reports. The study, “Air pollution by particulate matter PM10 may trigger multiple sclerosis relapses,” was published in the journal Environmental Research. A growing number of epidemiological studies suggest…

A stressful microenvironment, characterized by low metabolites and low oxygen levels, triggers the generation of immune cells directly implicated in a variety of inflammatory diseases, such as multiple sclerosis (MS). The study, “Cellular Stress in the Context of an Inflammatory Environment Supports TGF-β-Independent T Helper-17 Differentiation,” was…

Researchers at The Salk Institute have developed a way to grow vital brain cells called astrocytes from stem cells, a potential breakthrough for basic and clinical research into several diseases, including multiple sclerosis (MS). The study “Differentiation of Inflammation-responsive Astrocytes from Glial Progenitors Generated from Human Induced Pluripotent…

Taking Lemtrada (alemtuzumab) for two years inhibited magnetic resonance imaging (MRI) disease activity in patients with relapsing-remitting multiple sclerosis (RRMS) for more than six years, the CARE-MS I clinical trial extension study found. Researchers presented their study, “Durable Efficacy of Alemtuzumab on MRI Disease Activity Over 6 Years in Treatment-Naive RRMS Patients With…

Young multiple sclerosis (MS) patients who engage in physical activity can relieve symptoms of depression, concludes a Canadian study supported by the National Multiple Sclerosis Society. Researchers presented their study, “Longitudinal Relationships Between Moderate and Vigorous Physical Activity, Fatigue, and Depression in Pediatric Multiple Sclerosis,” at the 2017 Annual Meeting of the…

Multiple sclerosis patients who benefited from Ocrevus (ocrelizumab) in two Phase 3 clinical trials continued to benefit when they extended their treatment, researchers reported. In fact, their annual relapse rates have fallen even further during the extension study than during the trials. The study, “Preliminary Results of the OPERA I and…

Long-term treatment for up to 12o weeks, with the investigational drug Ozanimod (RPC-1063), found to be effective and safe in patients with relapsing multiple sclerosis (MS) who participated in the RADIANCE clinical trial. Celgene, Ozanimod’s developer, presented the study, “Efficacy and Safety of Ozanimod in the Blinded Extension (120…

Long-term therapy with Tysabri (natalizumab) significantly improved the mental state of people with secondary progressive multiple sclerosis (SPMS), according to results of a Biogen-supported study with patients taking the drug for almost two years. Biogen presented the study, “The Impact of Natalizumab on Health-Related Quality of Life in Patients with Secondary Progressive…

The use of multiple sclerosis (MS) mobile apps by patients and their clinicians encourages shared decision-making and helps patients improve their outcomes, finds a study presented at the 2017 Annual Meeting of the Consortium of Multiple Sclerosis Centers (CMSC), taking place May 24-27 in New Orleans. The study, “Shared Decision Making: Connecting…

Patients with relapsing-remitting multiple sclerosis (RRMS) regain part of their balance control after a single training session of ball-throwing exercises, finds a study supported by the National Multiple Sclerosis Society. Researchers presented their study, “A Single-Session Training of Ball Throwing Exercise Improves Balance Control in Individuals with Multiple Sclerosis,” at…

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…

A cytomegalovirus infection triggers an increase in inflammatory and cytotoxic immune cells in mice with multiple sclerosis (MS), which leads to enhanced inflammation and loss of nerve-protecting myelin. The study, “Cytomegalovirus infection exacerbates autoimmune mediated neuroinflammation,” was published in the journal Scientific Reports. A cytomegalovirus (CMV) infection…

Teva Pharmaceutical Industries will discuss two of its multiple sclerosis therapies, one that reduces relapses and one that appears to protect nerve structure, at a premier neurology conference in Boston this month. It will also give presentations at the 2017 Annual Meeting of the American Academy of Neurology on therapies…

Sanofi Genzyme will discuss three of its multiple sclerosis therapies at the American Academy of Neurology annual meeting in Boston, April 22-28. The presentations will cover two approved treatments for relapsing MS – Lemtrada (alemtuzumab) and Aubagio (teriflunomide) – and one that has been in a Phase 1 clinical…

Ampyra (dalfampridine) shows long-term efficacy in improving walking ability in people with multiple sclerosis, according to a study evaluating the treatment’s use in progressive and relapsing MS patients over two years. The study, “Monitoring long-term efficacy of fampridine in gait-impaired patients with multiple sclerosis,” was published in the…

Multiple Sclerosis News Today interviewed Dr. Linard Filli,
 an MS researcher at the University Hospital Zurich involved in clinical studies of prolonged release Ampyra (dalfampridine), on walking ability in MS patients, and Dr. Andrew Blight, chief scientific officer at Acorda Therapeutics, the treatment’s developer. Here is a full transcript of that interview. An…

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…

Scientists at the University of Maryland have developed an experimental treatment to control the immune system and recover movement in a paralyzed mouse model of multiple sclerosis (MS). The team presented its research April 2 during the 253rd National Meeting & Exposition of the American Chemical Society in San Francisco. In…

British scientists have accelerated from weeks to days the process by which stem cells generate brain cells, which could open the door to new treatment approaches for diseases such as multiple sclerosis. Researchers at the Wellcome Trust Sanger Institute and colleagues at the University of Cambridge developed the…

Using a small RNA molecule belonging to the family of microRNAs (miRs), scientists could restore myelin in nerve cells and improve limb function in mouse models of human multiple sclerosis (MS). The study, “miR-219 Cooperates with miR-338 in Myelination and Promotes Myelin Repair in the CNS,” was published in…

Scientists have identified a receptor that promotes the influx of damaging immune T-cells into the brain of a mouse model of human multiple sclerosis (MS). The study, “EBI2 is highly expressed in multiple sclerosis lesions and promotes early CNS migration of encephalitogenic CD4 T cells,” appeared in the…

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…

Ocrevus (ocrelizumab), an investigational monoclonal antibody, significantly decreases disease activity in patients with multiple sclerosis (MS), and is associated with a higher proportion of patients reaching no evidence of disease activity (NEDA), according to a new analysis. The study, “NEDA analysis by epoch in patients with relapsing multiple…