Alpha Lipoic Acid Impact on Apoptosis-Related Gene Expression in Mature Mouse Oocyte

Journal of Chemical Health Risks

مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 04 آذر 1402   

نوع مقاله: Original Article

شناسه دیجیتال (DOI): 10.22034/jchr.2023.1966009.1606

نویسندگان

Zahrah Khezli¹؛ Saeed Zavareh²؛ Mojdeh Salehnia^{* 1}

¹Anatomy Department, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran

²School of Biology, Damghan University, Damghan, Iran

چکیده

Utilizing antioxidants offers a promising strategy for mitigating the effects of oxidative stress. This study was designed to assess the influence of alpha-lipoic acid (ALA) on the maturation of mouse oocytes and their apoptosis-related genes. Germinal vesicle oocytes, obtained from female mice aged 6-8 weeks, were subjected to in vitro maturation. Among these, 488 oocytes were exposed to 100 μM ALA, while 506 oocytes matured without ALA over a 16-hour duration. Subsequent evaluations were conducted to determine oocyte maturation rates. A portion of the mature oocytes at the metaphase II (MII) stage underwent in vitro fertilization, while the remaining oocytes were utilized to analyze the expression of Caspase 3, Bad, Bax, and Bcl2 through real-time RT-PCR. To quantify cell numbers, resulting blastocysts were stained with DAPI (4',6-diamidino-2-phenylindole). The group treated with ALA exhibited significantly higher rates of MII oocytes (77.30%) and a greater proportion of embryos developing into the blastocyst stage (33.87%) in comparison with the control group (55.81% and 25.06%, respectively; P<0.05). Moreover, the average cell count within blastocysts significantly increased in the ALA-treated group (82.37) compared to the control group (68.5; P<0.05). Furthermore, the pro-apoptotic genes expression decreased significantly, while the expression of the Bcl2 gene exhibited a significant increase in the ALA-treated group in comparison to the control group (P<0.05). In conclusion, the supplementation of the maturation medium for mouse oocytes with ALA resulted in improvements in oocyte development and overall embryo quality. This effect was attributed to the downregulation of pro-apoptotic genes and the upregulation of the anti-apoptotic gene.

کلیدواژه‌ها

GV oocytes؛ Alpha-lipoic acid؛ Apoptotic genes

مراجع

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