Aging macrophages and microglia poorly burn glucose and enter an inflammatory state. Revving their metabolism preserved synapses and memory in mice. What does prostaglandin have to do with it?
By tracing the transcriptomes of neurons that wither early and late in the course of Alzheimer’s disease, researchers peg subpopulations of excitatory neurons in entorhinal cortex as selectively vulnerable to tau. Reactive astrocytes aid and abet.
A large multinational epidemiology study finds only small and inconsistent associations.