Membrane mechanisms in arterial hypertension.

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Abstract
The purpose of this review is to focus on alterations in vascular muscle membrane potentials (Em), ionic permeabilities, and ionic transport systems which may either contribute to or be a consequence of the hypertensive state. Three models of hypertension are discussed: 1) deoxycorticosterone-salt (DOCA-salt)-induced hypertension; 2) low-renin (presumably volume expanded) renal hypertension (LRRH); and 3) the spontaneously hypertensive rat (SHR) of the Okamoto-Aoki Kyoto-Wistar strain and its normotensive genetic control (WKY). The importance of studying all possible mechanisms of increased contraction in vascular smooth muscle is stressed.