The mineralocorticoid receptor (MR) integrates hormonal signaling and activates the expression of aldosterone target genes, which control various physiological processes. In recent years, evidence has been provided for an important role of MR not only in the regulation of sodium and water homeostasis but also in cardiovascular function, neuronal fate, and adipocyte differentiation. MR belongs to the steroid receptor family that displays common mechanism of action. As a result, some apparent similarities with the glucocorticoid receptor (GR) have shaded MR's own specificities. The description of its gene structure, messenger isoforms, protein variants, functional domains, and posttranslational modifications (phosphorylation, ubiquitinylation, sumoylation, acetylation) as well as a panel of interactions with coregulators, progressively depicted an original portrait of MR and shed light on its specific mechanism of action. In this review, after an overview of MR characteristics, the multiple levels of MR selectivity over other steroid receptors, in particular GR, will be described as well as the consequences for aldosterone-regulated gene expression.
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http://dx.doi.org/10.1210/me.2005-0089 | DOI Listing |
Br J Hosp Med (Lond)
January 2025
Nephrology Department, Sunderland Royal Hospital, Sunderland, UK.
Patients with chronic kidney disease (CKD) and type 2 diabetes mellitus (T2DM) face considerable cardiorenal morbidity and mortality despite existing therapies. Recent clinical trials demonstrate the efficacy of finerenone, a novel non-steroidal mineralocorticoid receptor antagonist, in reducing adverse renal and cardiovascular outcomes. This editorial briefly reviews the evidence and its implications for clinical practice, advocating the use of finerenone in these high-risk patients in combination with currently established treatment agents.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Department of Hypertension and Diabetology, Medical University of Gdańsk, 80-214 Gdańsk, Poland.
Aldosterone, the primary adrenal mineralocorticoid hormone, as an integral part of the renin-angiotensin-aldosterone system (RAAS), is crucial in blood pressure regulation and maintaining sodium and potassium levels. It interacts with the mineralocorticoid receptor (MR) expressed in the kidney and promotes sodium and water reabsorption, thereby increasing blood pressure. However, MRs are additionally expressed in other cells, such as cardiomyocytes, the endothelium, neurons, or brown adipose tissue cells.
View Article and Find Full Text PDFBiomolecules
December 2024
Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens, 75, Mikras Asias Str., 115 27 Athens, Greece.
Sodium-glucose co-transporter 2 inhibitors (SGLT2i), glucagon-like peptide-1 receptor agonists (GLP1a), and non-steroidal mineralocorticoid receptor antagonists (ns-MRA) are promising treatments for chronic kidney disease. This umbrella review of network meta-analyses evaluated their effects on cardiovascular outcomes, kidney disease progression, and adverse events, using the TOPSIS method to identify the optimal intervention based on P-scores. A total of 19 network meta-analyses and 44 randomized controlled trials involving 86,150 chronic kidney disease patients were included.
View Article and Find Full Text PDFBiomedicines
December 2024
Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan.
Chronic kidney disease (CKD) is a major public health concern around the world. It is a significant risk factor for cardiovascular disease (CVD), and, as it progresses, the risk of cardiovascular events increases. Furthermore, end-stage kidney disease severely affects life expectancy and quality of life.
View Article and Find Full Text PDFJCEM Case Rep
February 2025
University of Utah Health, Division of Endocrinology, Salt Lake City, UT 84108, USA.
Glucocorticoid resistance syndrome (GRS) is caused by inactivating pathogenic variants in the glucocorticoid receptor gene . Reduced glucocorticoid receptor signaling leads to decreased tissue sensitivity to cortisol and resultant biochemical hypercortisolism without the classic clinical features of Cushing syndrome. Patients variably present with signs and symptoms of mineralocorticoid and androgen excess from ACTH overstimulation of the adrenal cortex.
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