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Microglia Depletion Restores Two Hours NREM Sleep in Alzheimer Mice

7/22/2026

Summary

Story summary

University of Kentucky researchers silenced 87% of microglia, restoring two hours of NREM sleep in an Alzheimer’s mouse model.
Whole-brain light-sheet imaging showed microglial expansion predicted sleep loss, while plaque burden did not affect NREM disruption.
A CSF1R-targeting drug depleted microglia by 87% and lengthened NREM sleep without changing plaque load, though researchers warn chronic depletion is unsuitable because microglia support brain immune surveillance.

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Story summary

University of Kentucky researchers silenced 87% of microglia, restoring two hours of NREM sleep in an Alzheimer’s mouse model.
Whole-brain light-sheet imaging showed microglial expansion predicted sleep loss, while plaque burden did not affect NREM disruption.
A CSF1R-targeting drug depleted microglia by 87% and lengthened NREM sleep without changing plaque load, though researchers warn chronic depletion is unsuitable because microglia support brain immune surveillance.