Chemokine (C-C motif) ligand-2 (CCL2) and oxidative stress markers in recurrent pregnancy loss and repeated implantation failure

Purpose The main purpose of this study is to evaluate the inflammatory response and oxidative stress together in the cases of recurrent pregnancy loss (RPL) and repeated implantation failure (RIF). Methods This is a cross-sectional study conducted to compare infertile patients who have RIF and patients with RPL histories in terms of CCL2, TAS, TOS, and OSI. To this end, two study groups were formed by primary-infertile women with RIF history and women with nulliparous RPL history who consulted a university hospital between 2014 and 2016, and a control group was formed by multiparous women who had no pregnancy loss. With 30 women in each group, 90 women in total were included in the study. CCL2, TAS, and TOS blood levels were measured and oxidative stress index was calculated in all participants. Results The patients with RPL and RIF had higher levels of CCL2 than those in the control group. The TOS, TAS, and OSI levels did not differ in RPL and RIF groups from the control group. No statistically significant relationship was found between CCL2 and the TOS, TAS, and OSI values. Conclusions Oxidative stress markers in the pregestational period did not have a predictive value in the RPL and RIF. CCL2 might be useful in risk prediction.