期刊
JOURNAL OF ASSISTED REPRODUCTION AND GENETICS
卷 38, 期 2, 页码 471-477出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10815-020-02014-y
关键词
Oxidative stress; PCOS; Follicular fluid; Embryo quality
资金
- National Key Research and Development Program of China [2018YFC1004000]
- National Natural Science Foundation of China [31871509, 81622021, 82071606]
- National Natural Science Foundation of Shandong Province [JQ201816]
- Innovative Research Team of High-Level Local Universities in Shanghai [SSMU-ZLCX20180401]
- Key Research and Development Program of Shandong Province [2019GSF108274]
- Young Scholars Program of Shandong University
Elevated oxidative stress levels were found in both the serum and follicular fluid of PCOS patients compared to normal controls, with the former showing more severe oxidative stress. The study revealed that oxidative stress in follicular fluid has a stronger impact on embryo quality, highlighting the importance of this factor in future research.
Purpose Elevated oxidative stress has been proposed as an important factor in the pathogenesis of polycystic ovary syndrome (PCOS)-related infertility. Our study was aimed at simultaneously exploring local and systemic oxidative stress in PCOS individuals and its relationship with embryo quality. Methods We recruited 86 PCOS cases and 60 controls. Five representative oxidative stress markers, namely, total oxidant capacity (TOC), total antioxidant capacity (TAC), malonaldehyde (MDA), glutathione (GSH), and superoxide dismutase (SOD), were measured in both follicular fluid (FF) and serum. Results Women with PCOS compared to normal controls had higher levels of TOC in both FF (10.13 +/- 2.68 vs.7.03 +/- 2.45, P < 0.001) and serum (11.76 +/- 2.92 vs. 8.82 +/- 2.57, P < 0.001). The oxidative stress index (OSI, the ratio of TOC to TAC) was also higher in PCOS cases. They were still significant after BMI adjustment (Padj<0.01). In addition, the serum OSI level was much higher than the FF OSI level in both groups. Correlation analysis showed that the FF and serum TOC were negatively correlated with the high-quality embryo rate on day 3 and the later blastocyst formation rate in the PCOS group (P < 0.05). The correlation coefficient was higher in FF. Moreover, as the regression analysis data showed, the FF MDA level was significantly associated with embryo quality indicators (P < 0.05). Conclusions PCOS was accompanied by elevated oxidative stress in both serum and FF. Even though serum oxidative stress was severe, the study suggested that FF oxidative stress contributed more to embryo quality, to which we should give more attention in the future.
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