Cited by 268Hormonal Regulation and HypertensionEstrogen and related hormone effectsAdrenal Hormones and Disorders

Multiple aspects of mineralocorticoid selectivity

Farman, Nicolette, Rafestin-Oblin, Marie-Edith·2001·American Journal of Physiology-Renal Physiology

Abstract

Aldosterone regulates renal sodium reabsorption through binding to the mineralocorticoid receptor (MR). Because the glucocorticoid receptor (GR) is expressed together with the MR in aldosterone target cells, glucocorticoid hormones bound to GR may also intervene to modulate physiological functions in these cells. In addition, each steroid can bind both receptors, and the MR has equal affinity for aldosterone and glucocorticoid hormones. Several cellular and molecular mechanisms intervene to allow specific aldosterone regulatory effects, despite the large prevalence of glucocorticoid hormones in the plasma. They include the local metabolism of the glucocorticoid hormones into inactive derivatives by the enzyme 11beta-hydroxysteroid dehydrogenase; the intrinsic properties of the MR that discriminate between ligands through differential contacts; the possibility of forming homo- or heterodimers between MR and GR, leading to differential transactivation properties; and the interactions of MR and GR with other regulatory transcription factors. The relative contribution of each of these successive mechanisms may vary among aldosterone target cells (epithelial vs. nonepithelial) and according to the hormonal context. All these phenomena allow fine tuning of cellular functions depending on the degree of cooperation between corticosteroid hormones and other factors (hormonal or tissue specific). Such interactions may be altered in pathophysiological situations.

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Crossref · 10.1152/ajprenal.2001.280.2.f181

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  • In classic aldosterone target tissues, 11-beta hydroxysteroid dehydrogenase type 2 converts cortisol to cortisone, which has no mineralocorticoid receptor affinity, allowing aldosterone to specifically activate mineralocorticoid receptors.

    “In classic aldosterone target tissues, such as the distal parts of the nephron and colon, the enzymatic breakdown of cortisol to cortisone by -beta hydroxysteroid dehydrogenase type  (b-Hsd), which has no affinity for MRs, allowed for aldosterone to specifically bind to and activate MRs ().”

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Authors
Farman, N., & Rafestin-Oblin, M.-E.
Affiliations
Inserm (FR)
Venue
American Journal of Physiology-Renal Physiology
Published
2001-02-01
Volume
280
Issue
2
Pages
F181-F192
ISSN
  • 1522-1466 (ISSN-L)
  • 1931-857X
OpenAlex
W2182021623
Cited by
268
References
122
Citations by year
2026: 6 · 2025: 3 · 2024: 5 · 2023: 12 · 2022: 8 · 2021: 9 · 2020: 5 · 2019: 8 · 2018: 8 · 2017: 10 · 2016: 11 · 2015: 12 · 2014: 8 · 2013: 16 · 2012: 13
FWCI
1.94
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Renal Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal Regulation and Hypertension
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
Keywords
mineralocorticoid receptor, glucocorticoid receptor, aldosterone, glucocorticoid metabolism, 11β-hydroxysteroid dehydrogenase, receptor heterodimerization, receptor transactivation, transcription factor interaction, renal sodium reabsorption
MeSH terms
Aldosterone, Animals, Glucocorticoids, Humans, Hydroxysteroid Dehydrogenases, Kidney, Mineralocorticoids, Receptors, Glucocorticoid, Receptors, Steroid, Receptors, Mineralocorticoid, 11-beta-Hydroxysteroid Dehydrogenases, 11-beta-Hydroxysteroid Dehydrogenase Type 2

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