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Stroke, Vol 12, 410-413, Copyright © 1981 by American Heart Association

ARTICLES

Arterial hypertension injures brain capillaries. Definition of the lesions. Possible pathogenesis

JH Garcia, E Ben-David, KA Conger, JC Geer and W Hollander

Systemic hypertension (secondary to aortic coarctation) produces in monkeys, multifocal brain lesions where capillaries show increased diameter, endothelial degeneration and deposition of collagen and other substances in the basement membrane. In one animal, capillary changes were detected as early as 8 weeks after induction of hypertension. Similar capillary alterations were demonstrated in brain samples of hypertensive humans obtained at autopsy. We suggest that the above abnormalities may be the result of successive episodes of regional ischemia and/or hyperperfusion. Validation of these observations requires careful evaluation of additional human and animal brains.

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