Researchers at the University of Missouri discovered that age-related muscle weakness in older adults results from deteriorating communication between nerves and muscles at the neuromuscular junction, caused by reduced levels of the NaV1.4 protein. They identified a potential treatment by targeting the ClC-1 protein, which in animal models improved muscle strength and responsiveness to nerve signals, offering a potentially reversible approach to sarcopenia affecting nearly half of adults over 80.
Scientists at the University of Missouri discovered that age-related muscle weakness stems from deteriorating communication between nerves and muscles, specifically involving reduced levels of the protein NaV1.4. Researchers demonstrated that partially inhibiting a protein called ClC-1 improved muscle responsiveness to nerve signals in animal models, offering a potential therapeutic path to treat sarcopenia and preserve strength in older adults.