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Evaluation of the expression of sperm proteins in normozoospermic and asthenozoospermic men using monoclonal antibodies

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Asian Journal of Andrology 2016年第1期18卷 108-113页

作者： jana capkova Alena Kubatova Lukas Ded Olina Tepla jana Peknicova Laboratory of Reproductive Biology Institute of Biotechnology Academy of Sciences of the Czech Republic v. v. i. Prague Czech Republic Clinic Center IVF ISCARE Prague Czech Republic

Recent studies have shown that infertility affects estimated 15% of all couples. Male infertility is the primary or contributory cause in 60% of these cases. Consequently, the application of assisted reproduction is increasing. These methods could benefit from an extended evaluation of sperm quality. For this reason, we analyzed sperm proteins from 30 men with normal spermiograms and 30 men with asthenozoospermia. Ejaculates of both groups were tested by flow cytometry （FCM） and fluorescence with a set of well-characterized anti-human sperm Hs-monoclonal antibodies （MoAbs）, which were generated in our laboratory. No statistically significant differences were found between normospermics and asthenospermics in the expression of the sperm surface protein clusterin, evaluated with Hs-3 MoAb, and semenogelin, evaluated with Hs-9 MoAb. However, FCM revealed quantitative differences in the acrosomal proteins between normozoospermic and asthenozoospermic men, namely, in glyceraldehyde-3-phosphate dehydrogenase, evaluated with Hs-8 MoAb, valosin-containing protein, evaluated with Hs-14 MoAb, and ATP synthase （cAMP-dependent protein kinase II, PRKAR2A）, evaluated with MoAb Hs-36. Asthenozoospermic men displayed a highly reduced expression of intra-acrosomal proteins, with a likely decrease in sperm quality, and thus a negative impact on successful reproduction. Asthenozoospermia seems to be a complex disorder involving intra-acrosomal proteins.

关键词： asthenozoospermia flow cytometry fluorescence microscopy monoclonal antibodies sperm proteins

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