Urinary tetrahydroaldosterone and aldosterone-18-glucuronide excretion in white and black normal subjects and hypertensive patients
Abstract
Urinary aldosterone excretion is commonly determined by assay of aldosterone liberated from the acid-labile metabolite, aldosterone-18-glucuronide (Aldo-18-G), which reflects 5-15% of aldosterone secretion. However, since 3alpha, 5beta-tetrahydroaldosterone (TH-Aldo), the major metabolite, reflects 15-40% of aldosterone excretion, determination of its excretion should usually provide a more accurate index of aldosterone secretion. We have validated a RIA for urinary TH-Aldo and compared its excretion in black and white normal subjects and patients with essential hypertension and primary aldosteronism during consumption of low, normal, and high sodium diets. Urinary TH-Aldo excretion averaged 4.5 +/- 2.0 (mean +/- SD) times that of Aldo-18-G. The ratio of excretion of the two remained relatively constant during low, normal, and high sodium diets. There was no difference in the excretion of TH-Aldo or Aldo-18-G in black vs. white normal subjects or hypertensive patients and no age-related changes in the excretion of either metabolite from 20-60 yr of age. Two of nine patients with primary aldosteronism had normal Also-18-G excretion but elevated TH-Aldo excretion. We conclude that determination of both metabolites increases the diagnostic accuracy for primary aldosteronism.
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THAldo-glucuronides are consistently five-fold more prevalent than aldosterone-18β-glucuronide irrespective of sodium intake.
“THAldo-glucuronides are consistently five-fold more prevalent than aldosterone-18β-glucuronide irrespective of sodium intake [221].”
From Human steroid biosynthesis, metabolism and excretion are differentially reflected by serum and urine steroid metabolomes: a comprehensive review (2019) · cites this paper as [221]
Aldosterone-18β-glucuronide and THAldo-glucuronides contribute 5-15% and 15-40% towards the daily urinary excretion of aldosterone.
“aldosterone-18β-glucuronide and THAldo-glucuronides contribute 5–15% and 15–40% towards the daily urinary excretion of aldosterone [221,226].”
From Human steroid biosynthesis, metabolism and excretion are differentially reflected by serum and urine steroid metabolomes: a comprehensive review (2019) · cites this paper as [221]
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- Authors
- GOMEZ-SANCHEZf, C. E., & HOLLAND, B.
- Affiliations
- University of South Florida (US)
- Venue
- The Journal of Clinical Endocrinology & Metabolism
- Publisher
- The Endocrine Society
- Published
- 1981-02
- Volume
- 52
- Issue
- 2
- Pages
- 214-219
- ISSN
- 0021-972X (ISSN-L)
- 1945-7197
- OpenAlex
- W2150331207
- Cited by
- 58
- References
- 23
- Citations by year
- 2026: 1 · 2025: 3 · 2024: 4 · 2023: 3 · 2022: 1 · 2019: 1 · 2017: 1 · 2016: 1 · 2015: 1 · 2013: 1
- FWCI
- 2.98
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health (5r01hl026856-06)
- National Center for Research Resources (M01RR000633)
- NIH Clinical Center
- 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 › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
- Keywords
- aldosterone excretion, primary aldosteronism, essential hypertension, sodium intake, racial differences, age-related changes, radioimmunoassay validation, diagnostic accuracy
- MeSH terms
- Adult, Aldosterone, Diet, Female, Glucuronates, Humans, Hyperaldosteronism, Hypertension, Kinetics, Male, Middle Aged, Radioimmunoassay, Sodium, Black People, White People
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