The purpose of this study was to determine if hypertrophied myocardium was associated with diminished cardiac function, restricted oxygen supply, or oxygen consumption during tachycardia. Myocardial oxygen supply and oxygen consumption were determined during baseline and atrial pacing conditions 30 days after New Zealand White rabbits were prepared as one-kidney, one clip Goldblatt hypertensive...

We prove two main Goldblatt-Thomason-style Theorems for graded modal language in Kripke semantics: full Goldblatt-Thomason Theorem for elementary classes and relative Goldblatt-Thomason Theorem within the class of finite transitive frames. Two different semantic views on GML allow us to prove these results: neighborhood semantics and graph semantics. By neighborhood semantic view, we can define...

If the renal arteries of normal dogs are ligated, azotemia associated with some degree of hypertension occurs, and death results within a few days. In the heart, gall-bladder, stomach, and intestinal tract, medial necrosis of arterioles may be found together with focal hemorrhages and necrosis of smooth or cardiac muscle. The vascular changes were described by Goldblatt' and have been observed ...

To examine the role of the sympathetic nervous system in hypertension, the in vitro activity of tyrosine hydroxylase was examined in one-kidney, one clip (1K1C) and two-kidney, one clip (2K1C) hypertensive rabbits and their respective controls 2 weeks after surgical procedures. The in vitro activity of tyrosine hydroxylase provides a measure of catecholamine synthesis and serves as a biochemica...

We have previously demonstrated that loss of renal functional reserve (renal response to protein loading) in two-kidney, one clip Goldblatt hypertension is characterized by no change in glomerular filtration rate or single nephron glomerular filtration rate and decreased absolute proximal tubular reabsorption during glycine administration. Captopril restores proximal reabsorption and renal func...

We studied changes in intestinal microvascular permeability resulting from chronic arterial hypertension. Normotensive dogs and dogs made chronically hypertensive utilizing the one-kidney, one clip Goldblatt technique were used to obtain values for: arterial pressure, portal pressure, intestinal lymph flow, and the lymph-to-plasma protein concentration ratio (CL/Cp). Values for the normotensive...

To assess the role of the sympathetic and central noradrenergic neurons in one- and two- kidney Goldblatt hypertension, we examined the concentration and turnover of norepinephrine (NE) in the aorta, mesenteric artery, left ventricle, hypothalamus, midbrain, and pons medulla of hypertensive and control rabbits. Animals were made hypertensive by constriction of the left renal artery after right ...

Glomerular hemodynamics were studied by micropuncture technique in the unclipped kidney in rats in which modest two kidney Goldblatt hypertension was maintained for 4 weeks and in normotensive controls. Both groups ingested less than 2 mEq Na+/day. In hypertensive rats at micropuncture, mean hydrostatic pressure was elevated both systematically (128 +/- 5 vs 113 +/- 3 mm Hg, p less than 0.05) a...