For the first time, scientists have revealed a mechanism underlying the cellular degeneration of upper motor neurons, a small group of neurons in the brain recently shown to play a major role in ALS pathology.  ALS, or amyotrophic lateral sclerosis, is a fatal neuromuscular disorder marked by the degeneration of motor neurons, which causes muscle weakness and impaired speaking, swallowing and breathing that leads to … Continue reading Researchers identify mechanism of upper motor neuron degeneration in Amyotrophic Lateral Sclerosis.