Cerebrovascular effects of beta-amyloid were investigated using bovine mid-cerebral arteries. beta-amyloid-induced endothelial damage was evidenced by increased vasoconstriction, diminished vasodilation and was evident on electron microscopy. The endothelial dysfunction was mediated by reactive oxygen radicals. Vascular damage by beta-amyloid may be an early event in the development of the pathology of Alzheimer's disease.
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Thomas et al. (1997) studied this question.