Effects of selenium, calcium and calcium ionophore on human oocytes in vitro maturation in a chemically defined medium

سال انتشار: 1391
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 511

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شناسه ملی سند علمی:

JR_IJRM-10-4_008

تاریخ نمایه سازی: 16 شهریور 1395

چکیده مقاله:

Background: In vitro maturation (IVM) of human oocytes is an emerging procedure quickly incorporated into the world of assisted reproductive technologies. As an effective method of in vitro maturation, several studies have reported the critical role of differentions on activating the complex process involved in both gamete maturation and fertilization. Objective: In this study, we supplemented a chemically defined medium with different combinations of selenium, calcium and calcium ionophore concentrations to obtain the best rate of human oocytes maturation, survival, and fertilization. Materials and Methods: As an experimental study, Three combinations of [selenium (5 μg/ml), calcium (5 μg/ml) and calcium ionophore (1 μg/ml)], [selenium (10 μg/ml), calcium (7 μg/ml) and calcium ionophore (2 μg/ml)] and [selenium (15 μg/ml), calcium (10 μg/ml) and calcium ionophore (5 μg/ml)] added to the chemically defined medium and the morphology of oocytes assessed after 22-24 hours in vitro maturation of the oocytes. Results: The highest percentage of MII (meiosis II) oocytes (68%), developing beyond the morula (20.1%) and the blastocyst formation (11.1%) observed in oocytes treated with 15μg/ml selenium, 10μg/ml calcium and 5μg/ml calcium ionophore. Moreover, we showed the significant rate of survival in each three combinations after 36, 72 and 96 hours. Conclusion: Maturation and activation of oocytes may be triggered by changes in intracellular ion concentrations as second messengers in signal transduction pathways. Here, we received the highest percentage of in vitro maturation and fertilization among three combinations of selenium, calcium and calcium ionophore treatments. Using this combination of ions beside other factors might be useful for the enrichment of the human oocytes IVM medium.

کلیدواژه ها:

Human oocytes ، In vitro maturation (IVM) ، Selenium ، Calcium ، Calcium ionophore

نویسندگان

Mehri Makki

Department of Midwifery, Islamic Azad University, Meybod Branch, Meybod, Iran.

Elham Saboori

Department of Assisted Reproduction Technology, Laboratory of Embryology, Novin Fertility and Infertility Center, Mashhad, Iran

Mohammad Ali Sabbaghi

Department of Assisted Reproduction Technology, Laboratory of Embryology, Novin Fertility and Infertility Center, Mashhad, Iran Department of Biology, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran

Raheleh Aram

Department of Assisted Reproduction Technology, Laboratory of Embryology, Novin Fertility and Infertility Center, Mashhad, Iran