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CORTICOSTEROID-INDUCED STIMULATION OF ATRIAL NATRIURETIC PEPTIDE IN MAN
CORTICOSTEROID-INDUCED STIMULATION OF ATRIAL NATRIURETIC PEPTIDE IN MAN ACTA ENDOCRINOLOGICA SAXENHOFER, H., Angst, M., Weidmann, P., Shaw, S. G., Ferrier, C. 1988; 118 (2): 179-186Abstract
Previously, we reported elevated plasma immunoreactive ANP (irANP) levels from the 2nd to the 9th day of administering either prednisone, 50 mg/day, or 9 alpha-fludrocortisone acetate (9 alpha F), 0.6 mg/day, to normal humans. To investigate the course of plasma irANP levels during the first 48 h of corticosteroid administration, 9 healthy men (mean age +/- SEM, 24 +/- 1 years) received in randomised sequence A) a 4-h iv infusion of prednisolone sodium tetrahydrophthalate followed by oral administration of prednisone for 2 days; or B) a 4-h infusion of aldosterone followed by oral administration of 9 alpha F for 2 days. Basal supine plasma irANP levels averaged 32 +/- 5 ng/l in study A and 30 +/- 6 ng/l in study B; they were unchanged or even deceased up to 24 h of glucocorticoid or mineralocorticoid administration, but rose (P less than 0.01) to 56 +/- 9 and 62 +/- 12 ng/l at 48 h, respectively, of the two interventions. During glucocorticoid treatment, blood pressure (BP) and indices of the sodium-fluid volume state were unchanged after 48 h. During 9 alpha F administration, body weight increased (1.1 +/- 0.3%, P less than 0.001), whereas urinary sodium excretion (63 +/- 7%, P less than 0.001), hematocrit (4.1 +/- 1.1%, P less than 0.001), and plasma renin activity (38 +/- 4%, P less than 0.001) decreased. Conclusions: The increase in circulating irANP at 48 h of administration of either a glucocorticoid or a mineralocorticoid demonstrates a distinct but slow response of the ANP system to these corticosteroids in normal humans.(ABSTRACT TRUNCATED AT 250 WORDS)
View details for Web of Science ID A1988N635200004
View details for PubMedID 2968749