The effect of reversal of hypertension on vascular function and composition was investigated in renal-hypertensive rats. The study comprised three groups of rats: 1) 21 male Sprague-Dawley rats with one-kidney, one clip Goldblatt hypertension of 9 weeks' duration; 2) 20 rats with one-kidney, one clip hypertension that underwent removal of renal artery clip (were "unclipped") at 6 weeks of hyper...

Hypertension is often associated with insulin resistance, and several chemically diverse agents that increase insulin sensitivity attenuate the development of experimental hypertension. We undertook the present study to determine whether attenuation of hypertension by pioglitazone, a thiazolidinedione derivative that increases insulin sensitivity without increasing insulin secretion, is specifi...

Baroreflex function was studied in conscious early phase (<6 weeks) two-kidney, one-clip hypertensive rats before and 24 hours after surgical reversal of hypertension by removal of the constricting renal artery clip or after pharmacological reduction of blood pressure by an infusion of hydralazine or captopril. A normotensive sham-clipped group was included. Another group of two-kidney, one-cli...

To determine the role of vasopressin in the maintenance of high blood pressure, the antihypertensive effect of the antagonists of the vasopressor effect of vasopressin, [1-deaminopenicillamine, 4-valine, 8-D-arginine] vasopressin (dPVDAVP), and [1-(beta-mercapto-beta, beta-cyclopentamethylenepropionic acid), 4-valine, 8-D-arginine] vasopressin (cyclo dVDAVP), was studied in unanesthetized, nons...