The presence of antibodies to oxidative modified proteins in serum from polycystic ovary syndrome patients.

Clinical and Experimental Immunology
J R PalacioP Martínez

Abstract

Polycystic ovary syndrome (PCOS) affects 5-10% of women of reproductive age. Free radicals, as a product of oxidative stress, impair cells and tissue properties related to human fertility. These free radicals, together with the oxidized molecules, may have a cytotoxic or deleterious effects on sperm and oocytes, on early embryo development or on the endometrium. Aldehyde-modified proteins are highly immunogenic and circulating autoantibodies to new epitopes, such as malondialdehyde (MDA), may affect the reproductive system. Autoantibodies or elevated reactive oxygen species (ROS) in serum are often associated with inflammatory response. The purpose of this work is to investigate whether PCOS women show increased levels of oxidized proteins (protein-MDA) and anti-endometrial antibodies (AEA) in their sera, compared with control patients, and to determine whether AEA specificity is related to oxidized protein derivatives. Sera from 31 women [10 patients with PCOS (PCOS group) and 21 women with male factor of infertility (control group)] were chosen from patients attending for infertility. Anti-endometrial antibodies were determined by enzyme-linked immunosorbent assay (ELISA) with an endometrial cell line (RL-95). Antibodies agai...Continue Reading

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