Disruption Of The Muscle-Brain Axis In Ageing: Role Of Myokines In Sarcopenia And Neurodegeneration
Did you know your muscles and brain are constantly talking to each other? This fascinating two-way communication system, often called the “muscle-brain axis,” is vital for keeping both your body and mind healthy as you age. When you exercise, your muscles release special messenger molecules called myokines. These myokines travel through your bloodstream and can influence various processes, including brain function.
However, as we get older, this crucial communication can start to break down. This disruption is thought to play a role in sarcopenia, which is the age-related loss of muscle mass and strength, and also in neurodegeneration, the decline in brain function that can lead to memory problems and other cognitive issues.
Researchers are actively working to understand the exact mechanisms behind this connection. While we know that physical activity is incredibly beneficial for both muscle health and cognitive function, the precise roles of individual myokines and how they exert their effects on the brain are still being investigated. For instance, scientists are trying to determine if myokines reach the brain in sufficient amounts to have a direct impact, or if their benefits are more related to broader changes in metabolism, blood flow, and inflammation throughout the body.
Most of our current understanding comes from studies in animals and cells, with human research often being observational. The big challenge for the future is to conduct more comprehensive human studies to truly understand this muscle-brain connection. Unlocking these secrets could pave the way for new treatments to combat age-related muscle weakness and cognitive decline, moving this promising hypothesis closer to a real therapeutic solution.
Source: link to paper