Changes of CD4+CD28null cells and oxidative stress in patients with polycystic ovary syndrome / 中华内分泌外科杂志

ABSTRACT

Objective To investigate the relationship between CD4+CD28na cells,oxidative stress markers malondialdehyde(MDA) and superoxide dismutase(SOD) and the pathogenesis of polycystic ovary syndrome(PCOS).Methods Thirty-two patients with PCOS(PCOS group) and 28 healthy women(control group) were selected.Six ml of peripheral venous blood were taken from each person,3 ml of which were separated and serum was collected.Sex hormone level,C-reactive protein (CRP),SOD and MDA were detected.Peripheral blood mononuclear cells (PBMCs) were isolated from the other 3 ml blood by centrifugation,and CD4+CD28null T cell subsets were detected by flow cytometry.The characteristics of each detected index of PCOS patients and healthy controls were compared.Results The proportion of CD4+CD28null T cells in the peripheral blood of the PCOS group was significantly higher than that of the control group (P＜0.05).The serum CRP and MDA in PCOS group were both significantly higher than that in the control group,and SOD was significantly lower than the control group(P＜0.05).Correlation analysis showed that the expression of CD4+CD28null T cells in the PCOS group was positively correlated with CRP(P＜0.05) and MDA(P＜0.05) and negatively correlated with SOD (P＜0.05).Conclusions Our study shows a disorder of immunoregulatory mechanism represented by abnormal increase of CD4+CD28null T cell expression and an imbalance of oxidative stress in patients with PCOS.The further study of relationship between these two pathophysiological patterns and PCOS may help to elucidate its pathogenesis.