Alzheimer’s breakthrough: Scientists restore two hours of sleep without clearing brain plaques
Researchers at the University of Kentucky have discovered that microglia, the brain's immune cells, are the primary drivers of sleep loss in Alzheimer's disease. By temporarily suppressing these cells in animal models, the team successfully restored two hours of sleep without needing to clear amyloid plaques.
Why it matters
This finding shifts the focus of Alzheimer's treatment from plaque removal to managing immune-driven inflammation, offering a new therapeutic target for sleep-related symptoms.
Imagine a small fire breaking out in one corner of your kitchen. With the right extinguisher, you might be able to stop it quickly. Instead, the sprinkler system activates and floods the entire house, turning a contained problem into widespread damage.
Researchers say something similar may happen in the brains of people with Alzheimer's disease. Amyloid plaques, sticky clumps of protein that accumulate in the brain, are like the fire. Microglia, the brain's resident immune cells, act like the sprinklers. Their response is meant to protect the brain, but it may ultimately make the situation worse.
A team at the University of Kentucky has now identified this damaging process for the first time and demonstrated a way to shut it down.
Brain Immune Cells Linked to Alzheimer's Sleep Loss
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