Brain cells tied to REM sleep cycle, affected in Parkinson’s, identified

A recent study suggests that certain neurons in the brain that help control REM sleep could be important for treating Parkinson's disease. These neurons, found in a specific area of the brainstem, are often damaged in people with REM sleep behavior disorder (RBD), which is an early sign of Parkinson’s. The research showed that when these neurons were activated in mice, they spent more time in REM sleep. However, when these neurons were harmed, the mice had less REM sleep and moved around more during that stage, similar to the behavior of Parkinson’s patients. Additionally, brain samples from people with Parkinson's revealed a build-up of a toxic protein called alpha-synuclein in these neurons. This suggests that these neurons might play a role in the spread of this harmful protein in the brain. Overall, the study highlights the potential of these neurons as a target for new treatments that could help slow down the progression of Parkinson’s disease.