Systemic adiponectin treatment reverses polycystic ovary syndrome-like features in an animal model
Anusha Singh A , Puran Bora B and Amitabh Krishna A C
+ Author Affiliations
- Author Affiliations
A Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
B Jones Eye Institute, Pat and Willard Walker Eye Research Center, University of Arkansas for Medical Sciences, 4301 West Markham, Little Rock, AR 72205, USA.
C Corresponding author. Email: akrishna_ak@yahoo.co.in
Reproduction, Fertility and Development 30(4) 571-584 https://doi.org/10.1071/RD17255
Submitted: 2 February 2017 Accepted: 9 August 2017 Published: 15 September 2017
Abstract
The present study examined the efficacy of adiponectin for regulating the reproductive, metabolic and fertility status of mice with polycystic ovary syndrome (PCOS). PCOS was induced in prepubertal (21- to 22-day-old) mice using dehydroepiandrosterone (6 mg 100 g−1 day−1 for 25 days), after which mice were administered either a low or high dose of adiponectin (5 or 15 µg mL−1, s.c., respectively). PCOS mice exhibited typical features, including the presence of numerous cystic follicles, increased circulating androgens, increased body mass, altered steroidogenesis, decreased insulin receptor expression and increased serum triglycerides, serum glucose, Toll-like receptor (TLR)-4 (a marker of inflammation) and vascular endothelial growth factor (VEGF; a marker of angiogenesis). These parameters were significantly correlated with a reduction in adiponectin in PCOS mice compared with vehicle-treated control mice. Exogenous adiponectin treatment of PCOS mice restored body mass and circulating androgen, triglyceride and glucose levels. Adiponectin also restored ovarian expression of steroidogenic markers (LH receptors, steroidogenic acute regulatory protein and 3β-hydroxysteroid dehydrogenase), insulin receptor, TLR-4 and VEGF levels in control mice. Adiponectin restored ovulation in PCOS mice, as indicated by the presence of a corpus luteum and attainment of pregnancy. These findings suggest that adiponectin effectively facilitates fertility in anovulatory PCOS. We hypothesise that systemic adiponectin treatment may be a promising therapeutic strategy for the management of PCOS.
Additional keywords: androgen, fertility.
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