Cited by 72Hormonal Regulation and HypertensionRenin-Angiotensin System StudiesParathyroid Disorders and Treatments

Parathyroid Hormone Modulates Angiotensin II-Induced Aldosterone Secretion from the Adrenal Glomerulosa Cell*

ISALES, CARLOS M., BARRETT, PAULA Q., BRINES, MICHAEL, BOLLAG, WENDY, RASMUSSEN, HOWARD·1991·Endocrinology

Abstract

The effect of PTH on aldosterone secretion from isolated bovine adrenal glomerulosa cells was examined. PTH binding was autoradiographically localized to the adrenal cortex, suggesting a specific effect. This binding of PTH was displaceable by cold PTH, but not by ACTH. No binding was observed in the adrenal medulla. In addition, PTH was shown to stimulate aldosterone secretion in a dose-dependent manner and to potentiate aldosterone secretion in response to angiotensin-II, such that PTH (10(-9)M) elevated the secretory rate from 58.6 +/- 6.8 to 110.9 +/- 19 pg/min.million cells in the presence of 10 nM angiotensin-II. The magnitude of the synergism between the two hormones depended on the concentrations of PTH and angiotensin-II as well as the time during which aldosterone secretion was measured. Within the first 15 min of stimulation, PTH increased the sensitivity to angiotensin-II, shifting the Ka for activation from 1.0 to 0.3 nM. In contrast, between 30-45 min of angiotensin-II stimulation, PTH elevated the maximal secretory response to angiotensin-II from 109 +/- 3.4 to 219 +/- 13.3 pg/min.million cells. By itself PTH elicited only a small increase in the intracellular Ca2+ concentration, as measured by aequorin luminescence in glomerulosa cells. In cells pretreated with angiotensin-II or 15 mM potassium, the intracellular calcium response to PTH was markedly potentiated. PTH was also found to cause a small increase in the cellular cAMP content. Thus, PTH stimulates aldosterone secretion from adrenal glomerulosa cells, both alone and in combination with angiotensin-II.

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Crossref · 10.1210/endo-129-1-489

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Authors
ISALES, C. M., BARRETT, P. Q., BRINES, M., BOLLAG, W., & RASMUSSEN, H.
Affiliations
Yale University (US)
Venue
Endocrinology
Published
1991-07
Volume
129
Issue
1
Pages
489-495
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2009730237
Cited by
72
References
20
Citations by year
2026: 3 · 2025: 2 · 2024: 4 · 2022: 1 · 2021: 2 · 2020: 7 · 2019: 7 · 2018: 5 · 2017: 2 · 2016: 4 · 2015: 7 · 2014: 1 · 2013: 2 · 2012: 4
FWCI
0.60
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5k11dk001825-03)
  • National Heart, Lung, and Blood Institute (R01HL036977, HL36977)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-01825, DK-19813)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal Regulation and Hypertension
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Renin-Angiotensin System Studies
  • Health Sciences › Medicine › Nephrology › Parathyroid Disorders and Treatments
Keywords
parathyroid hormone, angiotensin II, aldosterone secretion, adrenal glomerulosa cells, adrenal cortex, intracellular calcium, cyclic AMP, hormone synergy
MeSH terms
Cyclic AMP, Adrenal Cortex, Adrenal Medulla, Adrenocorticotropic Hormone, Aldosterone, Angiotensin II, Animals, Autoradiography, Calcium, Cattle, Drug Synergism, Parathyroid Hormone, Peptide Fragments, Zona Glomerulosa

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