research

Mindfulness protects against depression, anxiety, fatigue, and sleep problems in patients with multiple sclerosis (MS), improving their quality of life and overall well-being, a study finds. The study, “Longitudinal associations between mindfulness and well-being in people with multiple sclerosis,” was published in the International Journal…

Treatment with a single dose of Ocrevus (ocrelizumab) depleted a subset of immune T-cells within two weeks in patients with relapsing multiple sclerosis (MS) or primary progressive MS (PPMS), according to a study. The study, “Ocrelizumab Depletes CD20+ T Cells in Multiple Sclerosis Patients,” was published in the journal Cells. Autoreactive immune T-cells, which attack the body’s own tissues, have been regarded as the primary mediator of MS; however, this view has been challenged by the effectiveness of therapies targeting immune B-cells that contain the CD20 cell surface protein in reducing disease activity. One such therapy is Genentech’s Ocrevus, an anti-CD20 monoclonal antibody, which was first approved in the U.S. in 2017 for patients with relapsing MS or PPMS. Because CD20 is mainly expressed by B-cell precursors and mature B-cells, Ocrevus is often considered to selectively deplete CD20-containing B-cells. However, CD20 is also expressed by highly activated T-cells with the CD3 protein marker, characterized by the increased production of proinflammatory molecules, or cytokines. These T-cells are found in the blood, cerebrospinal fluid — the liquid surrounding the brain and spinal cord — and chronic brain lesions of MS patients, and show an elevated expression of the CD8 and CD45 markers. Off-label use of rituximab (marketed as Rituxan in the U.S. and MabThera in Europe), a lymphoma and rheumatoid arthritis treatment that also targets CD20, has been associated with the depletion of CD20-containing T-cells in MS patients. Therefore, targeting this T-cell subtype has been hypothesized as an additional mechanism for rituximab’s clinical effectiveness. However, scientists did not know whether Ocrevus, which is different from rituximab in terms of CD20 binding and cell toxicity, also depletes CD20-positive T-cells. To address this unknown, a team from Hannover Medical School in Germany analyzed blood samples of MS patients through a technique called multicolor flow cytometry prior to the first dose of Ocrevus and after two weeks, immediately before the second dose. They intended to evaluate the characteristics of the patients’ peripheral blood mononuclear cells, which include T-cells, B-cells, monocytes, and macrophages. A total of 21 patients (13 women) were included, with a median age of 43 years (range 22-65 years). Of the participants, 17 had the relapsing form of the disease for a median of 14.6 years, while four had PPMS for a median of 5.6 years. The analysis found T-cells containing CD20 and CD3 in all patients. These cells accounted for 2.4% of all CD45-expressing lymphocytes — white blood cells that include T- and B-cells — and for a significant proportion (18.4%) of all CD20 cells. Evaluation of the cells’ fluorescence intensity revealed that CD20 levels were significantly lower on T-cells than on B-cells also expressing this marker. Treatment with one dose of Ocrevus substantially lowered the levels of CD20-positive T- and B-cells within two weeks, reflected by a frequency of 0.04% and an absolute cell count decrease from 224.9 to 0.57/microliter. “Our results demonstrate that treatment with [Ocrevus] does not exclusively target B-cells, but also CD20+ T-cells, which account for a substantial amount of CD20-expressing cells,” the researchers wrote. “These findings suggest that CD20+ T-cells might play a pivotal role in the pathogenesis of MS, and we speculate that depletion of CD3+CD20+ cells by anti-CD20 monoclonal antibodies might contribute to the efficacy of anti-CD20 therapy,” they added. However, they also emphasized that the findings need to be confirmed in studies with larger groups of MS patients.

Treating a common animal model of multiple sclerosis (MS) with a typhoid vaccine eased disease symptoms by prompting T helper cells to stop production of a pro-inflammatory factor — interleukin (IL)-17 — and by promoting greater numbers of anti-inflammatory  regulatory T-cells, researchers report. Their study, “Targeting prohibitins at the…

Exercise and multiple sclerosis are a natural pair and shown by research to be an important part of our MS care plan. We all can benefit from getting an assessment by a professional therapist and having an exercise plan customized for our MS, but accessing exercise in a…

A type of immune cell from the gut can reduce brain inflammation in people with multiple sclerosis (MS), and increasing the numbers of these cells in a mouse model of the disease halts inflammation completely, new research reports. These findings were reported in the study, “Recirculating…

Blood infection with the yeast Candida albicans, a type of fungus, can reach the brain and trigger an immune response, a new mouse study shows. Although the fungus can be cleared within 10 days, it affects the spatial memory of mice. These findings are the first evidence that a blood infection with a…

BrainStorm Cell Therapeutics announced that the production of its therapy NurOwn will be expanded to support upcoming clinical trials, namely a Phase 3 trial in amyotrophic lateral sclerosis (ALS) and a Phase 2 trial in progressive multiple sclerosis (MS). BrainStorm’s proprietary, stem cell-based technology called…

Biogen and Skyhawk Therapeutics have created a strategic partnership that will allow both companies to use Skyhawk’s SkySTAR technology platform for the discovery of new small molecule treatments for neurological diseases, including multiple sclerosis and spinal muscular atrophy. Under the terms of the agreement, Biogen will be given…

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…

Stem Cell Transplant Lessens Disability and Relapses in RRMS Patients, Phase 2 Trial Shows Here’s another study indicating that a stem cell transplant should be a treatment choice available to all MS patients where medically appropriate. Isn’t it past time to press harder on the stem cell…

Because multiple sclerosis (MS) presentation and progression course can be very different between people of African ancestry and Caucasians, the recruitment of minorities to Phase 3 clinical trials is of particular importance. Researchers in the MS field and the general MS community should make a greater effort to improve…

An altered metabolism and signaling is associated with the ability of a subset of immune T helper 17 (Th17) cells to induce neuroinflammation, according to a new study of mice. The findings may lead to new treatments for multiple sclerosis (MS) and other chronic inflammatory diseases, the scientists said.

Unusually high levels of a transcription factor called paired related homeobox protein 1 (PRRX1) in human oligodendrocyte progenitor cells hinders their ability to respond to the loss of myelin and to transform into mature, myelin-producing oligodendrocytes, a new study shows. These findings suggest a new potential way of treating …

A product called acrolein, which is naturally excreted by the body and possible to measure in urine and blood, may be a potential biomarker to help diagnose and evaluate disease activity in people with multiple sclerosis (MS), according to preliminary research in animal models and humans. Researchers are investigating whether acrolein…

Multiple Sclerosis News Today brought you daily coverage of key findings, treatment developments, and clinical trials related to multiple sclerosis (MS) throughout 2018. We look forward to reporting more news to patients, family members, and caregivers dealing with MS during 2019. Here are the top 10 most-read articles of…

Multiple sclerosis (MS) patients who reported food allergies showed a 27 percent higher cumulative rate of flare-ups over the course of their disease, and more than twice the likelihood of having active inflammatory lesions, a new study shows. The study, “Food Allergies are Associated with Increased Disease Activity…

A genetic variant associated with an increased risk of multiple sclerosis (MS) due to its impact on certain immune system cells can also affect brain cells called astrocytes, a study shows. Reported in the study, “Enhanced astrocyte responses are driven by a genetic risk allele associated with multiple…

The U.S. Food and Drug Administration (FDA) has approved BrainStorm Cell Therapeutics‘ request to open a Phase 2 clinical trial testing the safety and effectiveness of its proprietary NurOwn mesenchymal stem cell (MSC) treatment in progressive multiple sclerosis (MS) patients. The request was in the form of Investigational New Drug…

Pretreating multiple sclerosis patients with antihistamines more extensively and with hydration can significantly reduce — by 60% — the likelihood of infusion-associated reactions that are the most common side effect of Ocrevus (ocrelizumab) use, a pilot study reported. Data also found that older and male MS patients are less likely to have…

Inactivation of S1PR2, a cell surface protein, helps improve clinical disability and reduce demyelination in a mouse model of experimental autoimmune encephalitis (EAE), a condition similar to multiple sclerosis (MS) in humans, a study shows. This finding suggests that therapies blocking S1PR2 could have the potential to treat MS. The…

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 …

Many years ago a woman I know who has multiple sclerosis (MS) became pregnant. After her child was born her MS became significantly worse. There have been many studies on the impact of pregnancy on someone with MS, with most concluding that the number of MS relapses are…

Multiple sclerosis (MS) patients who have been relapse-free while using an interferon-beta (IFN-β) therapy but switch to another IFN-β are significantly more like to start experiencing flares than patients who remain on their initial interferon treatment, a real-world study reports. Its results support letting patients remain on a current IFN-β medication…

Lipoic acid (LA), an over-the-counter antioxidant supplement, helps to mildly delay a decline in walking speed in secondary progressive multiple sclerosis (SPMS) patients, particularly those with lesser disability, analysis of a small, two-year clinical study reports. No improvements were seen in balance among…

As debate continues about the effects of medical marijuana on multiple sclerosis (MS) and other diseases, cannabis company GB Sciences and Louisiana State University (LSU) have agreed on a cannabinoid research and development project. This collaboration between a public and a private enterprise is a first in the therapeutic cannabis…

The Washington University School of Medicine in St. Louis (WUSTL) will create a new research center to investigate and advance the development of tracers for positron emission tomography (PET) scans. The center, which will be established at WUSTL’s Mallinckrodt Institute of Radiology (MIR), is going to focus on the…

Microglia, the resident immune cells of the brain, were seen to change throughout the lifespan of mice in a study — and to be diverse, with distinct cell subtypes. Those with pro-inflammatory behavior may be disease-causing, as they were found to accumulate in the brains of a mouse model of…

With a renowned researcher and her team chosen to lead it, work can now begin on the first project of its kind in Canada designed to shed more light on multiple sclerosis progression, and better ways of diagnosing and treating it. Leading the pioneering $7 million project — the Canadian…

Non-viral vehicles, called niosomes, can deliver DNA to glial cells in the central nervous system, a new study shows. The findings open new avenues for gene therapy and the treatment of neurological disorders, including multiple sclerosis (MS). The study “Non-viral vectors based on cationic niosomes as efficient gene delivery…

Palliative care in a hospital setting rose 30 fold among multiple sclerosis (MS) patients in the U.S. from 2005 to 2014, and was associated with longer hospital stays and greater numbers of in-hospital deaths but also lower overall costs, according to a large data study. Increased reliance on such care…