Metformin decreases miR-122, miR-223 and miR-29a in women with polycystic ovary syndrome

Autor: Pernille Bækgaard Udesen, Dorte Glintborg, Anja Elaine Sørensen, Rikke Svendsen, Nanna Louise Skov Nielsen, Marie Louise Muff Wissing, Marianne Skovsager Andersen, Anne Lis Mikkelsen Englund, Louise Torp Dalgaard
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Endocrine Connections, Vol 9, Iss 11, Pp 1075-1084 (2020)
Druh dokumentu: article
ISSN: 2049-3614
DOI: 10.1530/EC-20-0195
Popis: Metformin is associated with increased insulin sensitivity, whereas oral contraceptive pills (OCP) could increase the risk for type 2 diabetes (T2D) in women with polycystic ovary syndrome (PCOS). Certain miRNAs might serve as biomarkers for the risk of T2D. The aim of this study was to investigate changes in circulating miRNA levels during treatment with metformin and OCP in women with PCOS. Sixty-five women with PCOS according to Rotterdam criteria were randomized to metformin (2 g/day), metf ormin + OCP (150 mg desogestrel + 30 μg ethinylestradiol) or OCP alone for 12 month s. Serum miRNA analysis was performed with individual RT-qPCR or Taqman low density array cards of 22 selected miRNAs previously related to PCOS, glucose and/or lipid metabolism. miR-122 and miR-29a levels were decreased after treatment with metformin compared w ith metformin + OCP and OCP group: miR-122: log2 difference −0.7 (P = 0.01) and −0.7 (P = 0.02), miR-29a: log2 difference −0.5 (P = 0.01) and −0.4 (P = 0.04), while miR-223 levels were decreased in the metformin + OCP group after treatment: log2 difference −0.5 (P = 0.02). During the treatment period, a significant weight loss was observed in the metformin group compared with the OCP group. In the OCP group, miRNA levels were unchanged during the treatment period. Levels of circulating miRNAs associated with lipid and glucose metabolism decreased during metformin treatment. Changes in miRNA levels in the metformin group could be explained by the simultaneous weight loss in the same group. These results support the notion that metformin treatment alone may be superior for metabolic health compared with OCP.
Databáze: Directory of Open Access Journals