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

MS Therapy EHP-101 Boosts Blood Vessel Growth, Targets Inflammation

EHP-101, an experimental treatment being clinically tested for multiple sclerosis (MS), activates a cellular signaling pathway that promotes blood vessel development and reduces inflammation following brain injury, a new study shows. The findings continue to support the use of EHP-101 in MS, a condition marked by excess inflammation and…

Passive Health Tracking Can Predict Changes in MS, Study Says

Data passively collected by smartphone apps and fitness trackers can be used to accurately predict the risk of depression, severe fatigue, poor sleep quality, and symptom worsening in people with multiple sclerosis (MS) when in-person health visits are suddenly limited. These are the findings of a small study that…

Direct Electrical Stimulation of Brain Found to Ease MS Spasticity

Electrical stimulation of the brain through electrodes placed on the scalp may ease some measures of spasticity for people with relapsing-remitting multiple sclerosis (RRMS), according to results from a small clinical trial. Using this novel route of brain stimulation was shown to impact muscle contractions in patients with spasticity…

Stem Cell Transplant May Halt Nerve Fiber Damage in RRMS: Study

Autologous hematopoietic stem cell transplant (aHSCT) reduces markers of nerve fiber and myelin damage in people with relapsing-remitting MS (RRMS), according to a small study done in Sweden. “We investigated if therapeutic intervention with aHSCT could halt the injurious process leading to tissue damage in MS,” researchers wrote.

Quick MRI Method May Reliably Detect Myelin Repair in People

A quick MRI-based method called SyMRI may be useful in future clinical trials to test experimental myelin-repairing therapies in diseases like multiple sclerosis (MS), a new study shows. The study, “Quantification of individual remyelination during short-term disease course by synthetic magnetic resonance imaging,” was published inĀ Brain…

Dual Cognitive, Motor Tasks More Difficult Even in Early MS Stages

Even in early stages of disease, people with multiple sclerosis (MS) commonly experience more difficulties performing cognitive and motor tasks simultaneously than do people without MS, a new study indicates. The study, “Cognitive-motor interference in people with mild to moderate multiple sclerosis, in comparison with healthy…

Pregnancy Risks Not Likely to Rise With Early DMT Use, Study Finds

The rates of pregnancy complications are not higher in women with multiple sclerosis (MS) who were usingĀ disease-modifying therapies (DMTs) in the earliest stages of pregnancy, a study reported. The study, “Pregnancy outcomes after early fetal exposure to injectable first-line treatments, dimethyl fumarate or natalizumab in…

Robot-assisted Training for Arms Well-received by MS Patients

A robot-assisted training program that uses game-like activities to improve upper limb function was met with high satisfaction and enjoyment by people with multiple sclerosis (MS), a small study has found. Most of the participants reported the intervention improved their ability to do day-to-day activities, such as using a…

GA Depot Reduces Relapse Rates in Phase 3 Clinical Trial

Treatment with GA Depot, an experimental long-acting form of glatiramer acetate that requires less frequent dosing than approved formulations, significantly reduced relapse rates among people with relapsing forms of multiple sclerosis (MS), according to top-line results from a Phase 3 clinical trial. “We are pleased with the topline…

Gut Bacteria Are Altered in MS, Linked to Disease Progression

The composition of bacteria in the gut is altered in multiple sclerosis (MS) patients compared with healthy people in the same household, a new study reports. That bacterial composition is affected by disease-modifying therapies and seems to be associated with disease severity. These findings could aid in developing…

T-cells Targeting Epstein-Barr Virus at High Levels in MS Patients

People with multiple sclerosis (MS) have significantly more T-cells equipped with receptors that specifically recognize the Epstein-Barr virus (EBV) than do healthy individuals, a study revealed. Notably, no such differences were detected for T-cells with receptors specifically against other viruses. These findings add to previous data highlightingĀ EBV infection…

Soft Inner Layer Surrounding Brain May Be MS Target, Study Finds

In multiple sclerosis (MS), disease-causing immune T-cells enter the brain and spinal cord through the protective soft membranes covering them, called the leptomeninges, a new study shows. The findings ā€œsuggest that patients with MS could benefit from immunomodulatory therapies that target the leptomeninges,ā€ the researchers wrote, noting these surrounding…

Tysabri Improves Cognition Over Long-term in Early RRMS Patients

Long-term treatment with Tysabri (natalizumab) significantly improves cognitive function and increases the chance of disability reduction in people with early relapsing-remitting multiple sclerosis (RRMS), according to data from the four-year observational STRIVE trial. Patients on Tysabri also reported improved quality of life and less impact of MS on…

High-efficacy DMTs Boost Mid-term Prognosis for Relapsing MS: Study

People with relapsing multiple sclerosis (MS) treated with Tysabri (natalizumab) or Gilenya (fingolimod) are less likely to have disease activity than those on low-efficacy MS medications, according to a small study conducted in Japan. Results also showed that patients receiving the high-efficacy therapies had less brain shrinkage,…

More Microscopic Brain Damage Seen in SPMS Than in RRMS

People with secondary progressive multiple sclerosis (SPMS) have more microscopic damage in normal-appearing brain tissue than do patients with relapsing-remitting multiple sclerosis (RRMS), according to a new imaging study. These patients also have a greater number of chronic active lesions than those with RRMS. “Using advanced diffusion MRI…