Role of angiotensin II receptor subtypes on the regulation of aldosterone secretion in the adrenal glomerulosa zone in the rat.

Abstract:

:The role of AII receptors subtypes, AT1 and AT2, in the regulation of aldosterone secretion was studied in adrenal glomerulosa cells and membranes from rats on normal and low sodium intake, using AII receptor subtype-specific antagonists. In adrenal glomerulosa cells, more than 90% of the receptors were AT1 and there was a good correlation between the potencies of the antagonists to inhibit ligand binding, and AII-stimulated aldosterone production and inositol phosphate formation. The inhibition of basal and ACTH-stimulated cAMP by AII was also abolished by the AT1, but not the AT2, antagonist. Sodium restriction for 6 days increased both receptor subtypes in the same proportion, but only the AT1 antagonist inhibited AII-stimulated aldosterone production. The data demonstrate that AT1 receptor mediates the regulatory actions of AII in the adrenal zona glomerulosa.

journal_name

Mol Cell Endocrinol

authors

Aguilera G

doi

10.1016/0303-7207(92)90101-b

keywords:

subject

Has Abstract

pub_date

1992-12-01 00:00:00

pages

53-60

issue

1

eissn

0303-7207

issn

1872-8057

pii

0303-7207(92)90101-B

journal_volume

90

pub_type

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