Scientists Identify Reversible Nerve-Muscle Communication Failure Behind Age-Related Weakness
Researchers discovered that declining nerve-muscle signaling contributes to sarcopenia and showed that partially blocking the protein ClC-1 can restore strength in aged animals.
The University of Missouri-Columbia researchers identified a breakdown in communication between nerves and muscles as a key factor in sarcopenia, linked to lower NaV1.4 protein at the neuromuscular junction. Collaborating with Denmark’s NMD Pharma, they used a partial ClC-1 inhibitor, ignaseclant, to boost the responsiveness of aging muscle fibers to nerve signals, resulting in measurable strength gains in a pre-clinical model.
Prior clinical work showed ignaseclant can improve muscle function in Charcot-Marie-Tooth patients, supporting its safety profile. Arnold’s international team, which includes experts from Denmark, Scotland, Saudi Arabia, India, and Japan, plans to explore the therapy in older humans. The study was published in The Journal of Clinical Investigation and presented at the 2026 Muscular Dystrophy Association Clinical & Scientific Conference.
Why it matters
It points to a drug-based way to counteract age-related muscle loss, helping seniors stay active.
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