Marisa Wexler, MS,  senior science writer—

Marisa holds a Master of Science in cellular and molecular pathology from the University of Pittsburgh, where she studied novel genetic drivers of ovarian cancer. Her areas of expertise include cancer biology, immunology, and genetics, and she has worked as a science writing and communications intern for the Genetics Society of America.

Articles by Marisa Wexler

Paramagnetic rim lesions linked to MS disability progression

A specific type of brain lesion called a paramagnetic rim lesion, or PRL, is associated with worse disability over time in people with multiple sclerosis (MS), but available disease-modifying therapies (DMT) can lower the chances of the appearance of these lesions, according to two studies published by scientists…

Brain damage in MS children linked to lower socioeconomic status

Children with multiple sclerosis (MS) who come from poorer families or other disadvantageous circumstances tend to have more inflammation and irreversible brain tissue loss, a new study reports. “Our findings suggest that social disadvantage in childhood can have lasting effects on MS severity,” Kimberly A. O’Neill, MD, study coauthor…

High cholesterol linked to MS cognitive impairment in study

Higher cholesterol levels are associated with worse cognitive impairments in people with multiple sclerosis (MS), a study reported. The findings imply that medications or lifestyle changes that reduce cholesterol levels may be useful for addressing MS cognitive impairment, researchers said. The study, “Lipid measures are associated…

EC slaps Teva with €463M fine over misuse of Copaxone patents

The European Commission (EC) fined Teva Pharmaceuticals €462.6 million — more that $502 million — after an investigation it launched found the company illegally tried to stop competitor versions of Copaxone (glatiramer acetate injection), its blockbuster drug for multiple sclerosis (MS), from entering markets. Several patents…

Brain blood vessels key to new MS treatments, researchers argue

Developing a more comprehensive understanding of the interactions between the brain, blood vessels, and the immune system holds great promise for unlocking new ways to treat neurological diseases like multiple sclerosis (MS), a team of researchers argued in a new commentary paper. “Interactions between the brain, blood vessels, and…

Cholesterol medications might be able to be repurposed for MS: Study

Increased production of cholesterol by stem cells in the brain contributes to neurological damage in multiple sclerosis (MS), according to a new study conducted in lab-grown cells. Findings suggest cholesterol-lowering medications can reverse this damage, implying such treatments might be able to be repurposed for MS. “Cholesterol metabolism has…

Ancient viral genes in human DNA linked to MS in study

Abnormal activity of ancient viral genes may play a role in the development of multiple sclerosis (MS) and other neurological disorders, a study found. “Future functional studies are essential to elucidate the molecular and cellular mechanisms underlying their involvement in these conditions,” the researchers wrote. The study, “…

Adult myelin-making cells display unique marker affecting activity

A specific epigenetic marker, or a chemical modification in DNA that alters gene activity, may explain why adult oligodendrocyte progenitor cells respond differently to therapies aiming to restore myelin than their neonatal counterparts, a study reports. The modification, called a lysine eight acetylation on histone H4, helps to regulate…

Moderate alcohol consumption tied to slower RRMS disability pace

People with relapsing-remitting multiple sclerosis (RRMS) who drink low to moderate amounts of alcohol have significantly less disability progression in the years following diagnosis than non-drinkers, a study found. The trend was especially pronounced among women. Although the findings suggest that drinking alcohol may have beneficial effects in some…

MS and gut microbiome pattern similar across US, Asia: Analysis

People with multiple sclerosis show subtle alterations in gut bacteria that seem to be consistent across populations in the U.S. and Asia, a new analysis of previously published studies found. “Our work … establishes a generalized and common gut microbiome pattern in patients with MS across geographically and technically…

PIPE-307 shows potential to repair myelin in MS mouse model

PIPE-307, an experimental oral therapy that’s currently in Phase 2 testing for relapsing-remitting multiple sclerosis (RRMS), was shown to promote myelin repair in a mouse model of multiple sclerosis (MS). The preclinical findings were published in PNAS, in the study “Targeting the muscarinic M1 receptor…

Foralumab wins FDA fast track designation for nonactive SPMS

Tiziana Life Sciences has received fast track designation from the U.S. Food and Drug Administration (FDA) for its intranasal foralumab to treat nonactive secondary progressive multiple sclerosis (SPMS). The FDA gives fast track status to experimental medicines that have the potential to fill unmet needs to treat serious…

Machine learning analysis of eye scans may aid diagnosis of MS

Using machine learning to analyze eye scans can help detect slight changes that may be early signs of multiple sclerosis (MS), potentially aiding in early diagnosis of the disease, a study found. The study, “SLO-Net: Enhancing Multiple Sclerosis Diagnosis Beyond Optical Coherence Tomography Using Infrared Reflectance…

$2.9M research grant funds technology for MS stem cell therapy

The National Institute of Neurological Disorders and Stroke has awarded a $2.9 million, five-year grant to a research project that aims to advance a new technology that could improve stem cell therapies for multiple sclerosis (MS) and other neurological disorders. “The work we plan to undertake has significant implications…

EBV dormant in MS reactivates with disease activity, study finds

Dormant Epstein-Barr virus (EBV) becomes activated during periods of disease relapse in multiple sclerosis (MS) and triggers inflammatory activity in multiple types of immune cells, a study suggested. Blocking EBV activation can reduce the inflammatory activity of immune cells, supporting the idea that targeting the dormant virus may…