45Ca uptake and the actions of Bay K 8644 on aortic strips from rabbits with perinephritis hypertension.

Abstract:

:Uptake of 45Ca was measured in rings of thoracic aorta from rabbits with hypertension, induced by cellophane perinephritis (Page hypertension: one-kidney, one wrap). Basal 45Ca uptake was increased significantly in the hypertensive group (sham: 100 +/- 3, hypertensive: 133 +/- 11 nmol/g wet weight, n = 6). 45Ca uptake was increased by KCl (30 mmol/l), norepinephrine (50 nmol/l) and Bay K 8644 (14 or 56 nmol/l) by the following amounts: 152, 15, 28 and 36%, respectively. Stimulated 45Ca uptake was less in hypertensive animals for all agonists. The augmenting effect of Bay K 8644 on 45Ca uptake, stimulated by norepinephrine or by KCl, was also reduced in hypertension. It is concluded that in hypertension there are alterations in the Ca regulatory process and in the properties of the Ca channel in arterial muscle.

journal_name

J Hypertens

journal_title

Journal of hypertension

authors

Dong Y,Wadsworth RM

doi

10.1097/00004872-198712000-00013

subject

Has Abstract

pub_date

1987-12-01 00:00:00

pages

711-4

issue

6

eissn

0263-6352

issn

1473-5598

journal_volume

5

pub_type

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