Comparison between and Gene Expressions in The Sperm Cells Obtained from Normospermic and Asthenospermic Samples: A Case-Control Study.

BACKGROUND

Improving sperm motility results in increasing the success of a treatment cycle. Recently, sperm RNA has been used for diagnostic purposes such as whole seminal fluid, sperm analysis, and sperm quality test in patients undergoing fertilization/intracytoplasmic sperm injection (IVF/ICSI). SPATA18-P53 pathway is considered an essential pathway related to sperm mitochondria, which controls mitochondrial quality by eliminating its oxidative proteins. Oxidative stress may decrease sperm motility and affect sperm quality negatively due to an increase in P53 expression. SPATA18 protein is found in satellite fibers related to outer dense fibers in the middle piece of sperm. The downregulation of SPATA18 in the asthenospermia group can represent this gene's critical function in sperm motility and fertility. The present study aimed to assess the relationship between and gene expression in sperm cells obtained from normospermia and asthenospermia.

MATERIALS AND METHODS

In this case-control study, the quantitative real-time polymerase chain reaction (RT-PCR) technique was used to measure the and gene expression level in sperm samples collected from 21 patients and 63 healthy individuals. Further, the sperm DNA fragmentation assay (SDFA) kit was applied to determine the relative apoptosis level in cells and evaluate the biochemical information related to the patients' sperm samples. Furthermore, all the participants completed the consent form, and the ethics committee confirmed the study.

RESULTS

Based on the results, the and gene expression levels in most of the samples, in which motility was less than 40%, increased and decreased (P≤0.001), respectively.

CONCLUSION

The and gene expression levels increased and decreased in the asthenospermic patients, respectively, compared to the control group. Thus, the and expression levels can be used as an appropriate marker for diagnosing sperm motility in males.