
Core Insights - Masitinib demonstrates neuroprotective effects by lowering serum neurofilament light chain (NfL), a key biomarker for neurodegenerative disorders such as multiple sclerosis, amyotrophic lateral sclerosis, and Alzheimer's disease [1][4][6] Group 1: Research Findings - The study published in PLOS One shows that masitinib can significantly reduce serum NfL levels, indicating its potential neuroprotective effects [1][3] - At Day 8, masitinib treatment reduced NfL levels by 43% at a dosage of 50 mg/kg/day and by 60% at 100 mg/kg/day, demonstrating a dose-dependent response [5][11] - Absolute serum NfL concentrations were approximately 25% lower in both masitinib treatment groups compared to the EAE control group at Day 8, with further reductions observed at Day 15 [5][6] Group 2: Mechanism of Action - Masitinib targets the innate neuroimmune system, specifically mast cells and microglia, which are implicated in the pathophysiology of neurodegenerative diseases [4][7] - The drug has shown clinical benefits in previous trials for progressive multiple sclerosis, ALS, and mild-to-moderate Alzheimer's disease, reinforcing its therapeutic promise [4][6] Group 3: Functional Performance - Masitinib treatment improved grip strength in EAE mouse models, with treated mice recovering to baseline levels by Day 15, indicating a protective effect on motor function [11] - Both treatment groups exhibited significantly less relative deterioration in grip strength compared to the EAE control group (p < 0.001) [11]