The association of sperm BAX and BCL-2 gene expression with reproductive outcome in Oligoasthenoteratozoospermia cases undergoing intracytoplasmic sperm injection: A case-control study.
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引用次数: 0
Abstract
Background: The B-cell lymphoma 2 (BCL-2) protein is one of the members of the BCL-2 associated X (BAX) protein family that acts as an inducer of apoptosis.
Objective: The present study aims to investigate the association between BAX and BCL-2 gene expression with reproductive outcome, in cases undergoing intracytoplasmic sperm injection.
Materials and methods: In this case-control study, 50 men were divided into healthy fertile and oligoasthenoteratozoospermic infertile men (n = 25/each). They were subjected to history taking, clinical examination, and semen analysis. Expression of BAX and BCL-2 genes were measured using real-time polymerase chain reaction. The DNA fragmentation index was measured using the sperm chromatin dispersion assay technique. Using World Health Organization criteria, sperm parameters were evaluated.
Results: Evaluation of apoptosis-related genes showed that oligoasthenoteratozoospermic significantly increased mRNA expression of BAX, and significantly decreased mRNA expression of BCL-2, when compared with control. Moreover, the BAX/BCL-2 ratio was significantly higher in oligoasthenoteratozoospermic compared to the normozoospermic group (p = 0.01). Also, this study showed that the BAX and BCL-2 genes expression had a significant correlation with sperm quality, and DNA fragmentation in the oligoasthenoteratozoospermic group (p = 0.01). The oligoasthenoteratozoospermic men, had a considerably lower proportion of fertilization rate and good-quality embryos at the cleavage stage than the normozoospermic subjects (p = 0.01). A significant correlation was observed between the expression of BAX and BCL-2 genes, fertilization, and embryo quality (p = 0.01).
Conclusion: We concluded that the sperm BAX/BCL-2 ratio demonstrates a significant correlation with fertilization rate and embryo quality.
期刊介绍：
The International Journal of Reproductive BioMedicine (IJRM), formerly published as "Iranian Journal of Reproductive Medicine (ISSN: 1680-6433)", is an international monthly scientific journal for who treat and investigate problems of infertility and human reproductive disorders. This journal accepts Original Papers, Review Articles, Short Communications, Case Reports, Photo Clinics, and Letters to the Editor in the fields of fertility and infertility, ethical and social issues of assisted reproductive technologies, cellular and molecular biology of reproduction including the development of gametes and early embryos, assisted reproductive technologies in model system and in a clinical environment, reproductive endocrinology, andrology, epidemiology, pathology, genetics, oncology, surgery, psychology, and physiology. Emerging topics including cloning and stem cells are encouraged.
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