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  • Title: Alpha-human natriuretic polypeptide (alpha-hANP) specific binding sites in bovine adrenal gland.
    Author: Higuchi K, Nawata H, Kato K, Ibayashi H, Matsuo H.
    Journal: Biochem Biophys Res Commun; 1986 Jun 13; 137(2):657-63. PubMed ID: 3015125.
    Abstract:
    The effects of synthetic alpha-human atrial natriuretic polypeptide (alpha-hANP) on steroidogenesis in bovine adrenocortical cells in primary monolayer culture were investigated. alpha-hANP did not inhibit basal aldosterone secretion. alpha-hANP induced a significant dose-dependent inhibition of basal levels of cortisol and dehydroepiandrosterone (DHEA) secretion and also of ACTH (10(-8) M)-stimulated increases in aldosterone, cortisol and DHEA secretion. Visualization of [125I]alpha-hANP binding sites in bovine adrenal gland by an in vitro autoradiographic technique demonstrated that these sites were highly localized in the adrenal cortex, especially the zona glomerulosa. These results suggest that the adrenal cortex may be a target organ for direct receptor-mediated actions of alpha-hANP.
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