The X contains more genes related to brain function than does any other chromosome. “The X chromosome may be a treasure trove of genes that influence cognition, and these could be therapeutic targets, ...

Stop the Spread. Injecting saline into mouse kidneys did not affect the left or right substantia nigra (top). Injecting fibrils of α-synuclein ablated about half of the dopaminergic neurons (middle ...

The Amyloid—Tangle Connection. Aβ aggregates (green) hyper-excite neurons in tau epicenters and connected regions, strengthening that connectivity. This pushes tau propagation from one region to ...

Sphere of Influence. In iAssembloids, microglia (red) form projections (white arrows), while astrocytes (green) assume star shapes typically found in the brain. [Courtesy of Kampmann et al., 2025.] ...

Michael Breakspear, M.B. B.S., B.Sc., B.A., FRANZCP, Ph.D. Newcastle, Australia ...

I have no competing interest.

Scientists are seeking ways to tweak γ-secretase activity to turn down production of Aβ while leaving other substrates untouched. In the January 8 Nature Aging online, researchers led by Jee-Yin Ahn ...

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