Abstract
The aim of this investigation was to determine whether the adrenal, having reached the refractory state with respect to aldosterone secretion as a result of prolonged ACTH exposure, would respond to the other major stimuli of the mineralocorticoid: angiotensin II and K. Twelve healthy male volunteers on a normal Na and K intake and ambulatory received ACTH (40 IU, i.m.) twice daily for 5 days followed by 2 days of angiotensin II (5–13ng/kg body wt/min for 60min) or oral K citrate (30 mEq/h × 3). A discordance in the aldosterone-stimulating and pressor responses of angiotensin II was unmasked with only the latter response being positive following ACTH-induced refractoriness. In contrast to angiotensin II, K could selectively enhance aldosterone secretion by overcoming the inhibition in secretion of the mineralocorticoid induced by prolonged ACTH exposure.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
