Scientists Restore Sleep in Mice with Alzheimer's

Researchers have made a discovery about sleep loss in Alzheimer's disease. They found that the brain's own immune cells play a role in the sleep disturbances associated with the condition. In mice with amyloid plaques, overactive microglia triggered inflammation that disrupted deep, restorative sleep. This inflammation kept the brain from getting enough sleep. The researchers then temporarily removed most of these microglia cells from the mice. As a result, the mice got more than two hours of additional sleep per day. Notably, the amyloid plaques in the mice remained unchanged, suggesting that the sleep restoration was not due to the removal of the plaques themselves. The study's findings provide new insights into the relationship between immune cells, inflammation, and sleep in Alzheimer's disease. The discovery could potentially lead to new treatments for sleep disturbances in people with Alzheimer's. The researchers' work highlights the complex interplay between different factors in the development of Alzheimer's symptoms.