Cited by 75Renin-Angiotensin System StudiesEstrogen and related hormone effectsHormonal Regulation and Hypertension

Estrogen Reduces Aldosterone, Upregulates Adrenal Angiotensin II AT2 Receptors and Normalizes Adrenomedullary Fra-2 in Ovariectomized Rats

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Macova, Miroslava, Armando, Ines, Zhou, Jin, Baiardi, Gustavo, Tyurmin, Dmitri, Larrayoz-Roldan, Ignacio M., Saavedra, Juan M.·2008·Neuroendocrinology

Abstract

We studied the effect of ovariectomy and estrogen replacement on expression of adrenal angiotensin II AT 1 and AT 2 receptors, aldosterone content, catecholamine synthesis, and the transcription factor Fos-related antigen 2 (Fra-2). Ovariectomy increased AT 1 receptor expression in the adrenal zona glomerulosa and medulla, and decreased adrenomedullary catecholamine content and Fra-2 expression when compared to intact female rats. In the zona glomerulosa, estrogen replacement normalized AT 1 receptor expression, decreased AT 1B receptor mRNA, and increased AT 2 receptor expression and mRNA. Estrogen treatment decreased adrenal aldosterone content. In the adrenal medulla, the effects of estrogen replacement were: normalized AT 1 receptor expression, increased AT 2 receptor expression, AT 2 receptor mRNA, and tyrosine hydroxylase mRNA, and normalized Fra-2 expression and catecholamine content. We demonstrate that the constitutive adrenal expression of AT 1 receptors, catecholamine synthesis and Fra-2 expression are partially under the control of reproductive hormones. Our results suggest that estrogen treatment decreases aldosterone production through AT 1 receptor downregulation and AT 2 receptor upregulation. AT 2 receptor upregulation and modulation of Fra-2 expression may participate in the estrogen-dependent normalization of adrenomedullary catecholamine synthesis in ovariectomized rats. The AT 2 receptor upregulation and the decrease in AT 1 receptor function and in the production of the fluid-retentive, pro-inflammatory hormone aldosterone partially explain the protective effects of estrogen therapy.

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  1. [18]Brownie AC Laragh JH The adrenal cortex in hypertension: DOCA/salt hypertension and beyond Hypertension: Pathophysiology, Diagnosis, and Management 1995 Philadelphia Lippincott Williams & Wilkins
  2. [33]Wisden W Morris BJ Wisden W Morris BJ In situ hybridization with synthetic oligonucleotide probes In situ Hybridization Protocols for the Brain 1994 San Diego Academic Press 9 34

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Authors
Macova, M., Armando, I., Zhou, J., Baiardi, G., Tyurmin, D., Larrayoz-Roldan, I. M., & Saavedra, J. M.
Affiliations
National Institutes of Health (US)
Venue
Neuroendocrinology
Publisher
S. Karger AG
Published
2008
Volume
88
Issue
4
Pages
276-286
ISSN
  • 0028-3835 (ISSN-L)
  • 1423-0194
OpenAlex
W2000398122
Cited by
75
References
75
Citations by year
2026: 4 · 2025: 6 · 2024: 5 · 2023: 8 · 2022: 4 · 2021: 6 · 2020: 6 · 2019: 7 · 2018: 3 · 2017: 4 · 2016: 7 · 2015: 2 · 2014: 1 · 2013: 3 · 2012: 5
FWCI
0.97
Type
journal article
Language
en
Open access
Locations
  • Neuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • Americanae (AECID Library) (publishedVersion, other-oa)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, cc-by-nc-sa)
Funders
  • National Institutes of Health (Z99 MH999999)
  • National Institute of Mental Health (Z01MH002762)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Renin-Angiotensin System Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal Regulation and Hypertension
Keywords
estrogen, ovariectomy, estrogen replacement therapy, angiotensin II type 1 receptor, angiotensin II type 2 receptor, aldosterone, adrenal zona glomerulosa, adrenal medulla, catecholamine synthesis, tyrosine hydroxylase, reproductive hormones, estrogen therapy
MeSH terms
Adrenal Medulla, Aldosterone, Animals, Catecholamines, Estrogens, Female, Ovariectomy, RNA, Messenger, Tyrosine 3-Monooxygenase, Zona Glomerulosa, Estrogen Replacement Therapy, Rats, Wistar, Models, Animal, Receptor, Angiotensin, Type 2, Receptor, Angiotensin, Type 1, Rats, Fos-Related Antigen-2

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