Overactive immune cells linked to sleep loss in Alzheimer model mice

Overactive immune cells in the brain drive sleep disruption associated with Alzheimer disease, according to reporting by ScienceDaily and Science Daily. Researchers found that temporarily removing these brain cells restored more than two hours of sleep per day in affected mice. [1][2]

The intervention successfully increased sleep duration without clearing amyloid plaques, which are toxic protein aggregates frequently linked to the neurodegenerative condition. The findings suggest that sleep deficits in Alzheimer disease may be reversible through targeted immune treatments. [1]

Sleep disturbances represent a common feature of Alzheimer disease, but the underlying cellular mechanisms remain incompletely understood. Previous therapeutic strategies have focused primarily on removing amyloid deposits rather than addressing inflammatory immune responses in the central nervous system. [1]

By demonstrating that sleep loss can be corrected independently of plaque removal, the study identifies overactive immune cells as a distinct therapeutic target for future neurological interventions. [1]