Objective:To investigate the biochemical markers such as nitric oxide (NO), malondialdehyde (MDA) and reduced glutathione (GSH), indicators of the oxidative status of the follicle, to predict the outcome of in vitro fertilization.
Material and Methods: Follicular aspirates of dominant follicleswere collected during oocyte retrieval. Biochemical analyses of NO, MDA and GSH were performed on all aspirates.
Results:When the successful and unsuccessful pregnancy groups were compared in terms of NO, MDA and GSH, follicular fluid MDA was significantly higher (p=0.001) and follicular fluid NO level was significantly lower (p=0.039) in the pregnant group. Correlation analysis between oxidative stress and IVF parameters showed that MDA had a positive weak correlation with the number of grade 1 embryos (r=0.271, p=0.033) and fertilization rate (r=0.263, p=0.039). ROC curve analysis found that malondialdehyde has an area under the curve of 0.74 and can predict pregnancy with high sensitivity.
Conclusion:As malondialdehyde was significantly different in pregnant and non-pregnant women and had a good sensitivity profile in predicting pregnancy, it may be considered a marker for predicting IVF success. (J Turkish-German Gynecol Assoc 2013; 14: 136-41) Key words: Follicular fluid, malondialdehyde, nitric oxide, glutathione, in vitro fertilization, pregnancy Received: 22 April, 2013 Accepted: 21 May, 2013 Amaç: Folikül oksidatif durumunun belirteci olan nitrik oksit (NO), malondialdehit (MDA) ve redükte glutatyon (GSH) gibi kimyasal belirteçlerin in vitro fertilizasyon başarısına etkisinin araştırılması.
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Original Investigation 136
IntroductionInfertility is defined as the inability to conceive for at least one year despite having regular sexual intercourse without using any contraception method. There are different causes of infertility. Nearly 40-50% of infertility problems are estimated to be of female origin and approximately 30% of cases are of male origin. A further 20-25% of couples suffer from unexplained factors (1). The pathophysiology of unexplained infertility is still a scientific question (2). In order to find some answers for unexplained cases, several investigators are trying to develop new, non-invasive biochemical markers that may affect gamete and embryo quality. Oxidative stress is being investigated as a causative marker in this manner. Studies on the pathophysiology of unexplained infertility have indicated that oxidative stress may be involved as an underlying factor (3, 4). The maintenance of homeostasis in cells requires a complex interaction between prooxidants and antioxidants. Oxidative stress occurs as a result of a shift in this balance between prooxidants and antioxidants towards excess free radical formation (5 Abstract Özet is malondialdehyde (MDA). Since it is a stable end product, it can be used as a cumulative measure of lipid peroxidation (6). Nitric oxide (NO) is an inorganic, short-lived free radical gas that is synthesized from L-arginine via NO synthases. It has various ...