Estrogen reduces neuronal generation of Alzheimer β-amyloid peptides
Alzheimer's disease (AD) is characterized by the accumulation of cerebral plaques composed of 40- and 42-amino acid ̄-amyloid (Aβ) peptides, and autosomal dominant forms of AD appear to cause disease by promoting brain Aβ accumulation. Recent studies indicate that postmenopausal estrogen replacement therapy may prevent or delay the onset of AD. Here we present evidence that physiological levels of