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The Mineralocorticoid Receptor Antagonist Eplerenone Suppresses Interstitial Fibrosis in Subcutaneous Adipose Tissue in Patients With Type 2 Diabetes

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Activation of the mineralocorticoid receptor (MR) may promote dysfunctional adipose tissue in patients with type 2 diabetes, where increased pericellular fibrosis has emerged as a major contributor. The knowledge of the association between the MR, fibrosis and the effects of an MR antagonist (MRA) in human adipocytes remains very limited. The present sub-study including 30 participants was prespecified as part of the Mineralocorticoid Receptor Antagonist in type 2 Diabetes (MIRAD) trial, randomizing patients to either high dose eplerenone or placebo for 26 weeks. In adipose tissue biopsies, changes in fibrosis were evaluated by immunohistological examinations and by the expression of mRNA and protein markers of fibrosis. Treatment with an MRA reduced pericellular fibrosis, synthesis of the major subunits of collagen type I and VI, and the profibrotic factor α-smooth muscle actin, as compared to placebo in subcutaneous adipose tissue. Furthermore, we found decreased expression of the MR and downstream molecules neutrophil gelatinase-associated lipocalin, galectin-3, and lipocalin-like prostaglandin D2 synthase with an MRA. In conclusions, we present original data demonstrating reduced fibrosis in adipose tissue with inhibition of the MR, which could be a potential therapeutic approach to prevent the extracellular matrix remodeling of adipose tissue in type 2 diabetes.

Original languageEnglish
Issue number1
Pages (from-to)196-203
Number of pages8
Publication statusPublished - Jan 2021

Bibliographical note

Publisher Copyright:
© 2020 by the American Diabetes Association.

This record is sourced from MEDLINE/PubMed, a database of the U.S. National Library of Medicine

ID: 61433852