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  • Title: Atrial natriuretic polypeptide inhibits cortisol secretion as well as aldosterone secretion in vitro from human adrenal tissue.
    Author: Naruse M, Obana K, Naruse K, Yamaguchi H, Demura H, Inagami T, Shizume K.
    Journal: J Clin Endocrinol Metab; 1987 Jan; 64(1):10-6. PubMed ID: 3023424.
    Abstract:
    The effect of alpha-human atrial natriuretic polypeptide (ANP) on adrenal steroidogenesis was studied in human adrenal tissues obtained surgically from four patients with Cushing's syndrome due to an adrenal adenoma and five patients with an aldosterone-producing adenoma (APA). ANP significantly inhibited basal and ACTH (3.4 X 10(-8) M)-stimulated cortisol and aldosterone secretion in both the adenomas and adjacent adrenocortical tissues from patients with Cushing's syndrome. ANP inhibited ACTH-stimulated, but not basal, secretion of cortisol and aldosterone in the adjacent tissues from patients with APA. In addition, ANP significantly inhibited both basal and ACTH-, angiotensin II (10(-6) M)-, and potassium chloride (10 mM)-stimulated secretion of aldosterone from the adenomas of patients with APA. ANP-induced changes in cortisol and aldosterone secretion were accompanied by a decrease in cAMP and an increase in cGMP secretion. These results suggest that ANP may be a possible regulator of cortisol as well as aldosterone secretion in humans, and these effects might be due to concomitant alteration in cyclic nucleotide metabolism.
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