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Published on: September 15, 2017
[Effects of ANF and ACTH on aldosterone secretion in cultured human adrenal tissue]
1PUMC Hospital, Beijing.
Abstract:
We studied the effects of various concentrations of ANF and ACTH on aldosterone secretion in human normal adrenal tissue over different response times in vitro. We found that ANF 10(-8) mol/L at first stimulated but 24 h later inhibited basal aldosterone secretion. ANF 10(-8) mol/L also inhibited the ACTH-stimulated secretion of aldosterone. ACTH 10(-8) mol/L did not stimulate aldosterone secretion, while ACTH concentrations of 3 x 10(-8) and 5 x 10(-8) mol/L did. When ACTH and ANF were added simultaneously, the ANF-induced inhibition of ACTH-stimulated aldosterone secretion could be overcome by increasing the concentration of ACTH. Our results show that ANF caused a dose-dependent and time-dependent inhibition of basal and ACTH-stimulated increases in aldosterone secretion.
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