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http://dx.doi.org/10.5653/cerm.2018.45.4.189

Developmental competence of in vitro-matured human oocytes obtained from pregnant and non-pregnant women  

Pongsuthirak, Pallop (Department of Obstetrics and Gynecology, Buddhachinaraj Hospital Medical School)
Vutyavanich, Teraporn (Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Chiang Mai University)
Publication Information
Clinical and Experimental Reproductive Medicine / v.45, no.4, 2018 , pp. 189-194 More about this Journal
Abstract
Objective: The aim of this study was to compare the rate of maturation, fertilization, and embryo development of in vitro-matured human oocytes derived from pregnant and non-pregnant women. Methods: Immature oocytes were obtained by needle aspiration from 49 pregnant women (group 1) who underwent a cesarean section at term and 77 non-pregnant women (group 2) who underwent a gynecological operation during the same period (8 months). Healthy immature oocytes (530 in group 1 and 539 in group 2) were cultured and assessed for maturation 36 hours later. Mature oocytes were inseminated by intracytoplasmic sperm injection and cultured up to 144 hours. Results: The percentage of degenerated oocytes was significantly higher (12.1% vs. 6.3%; p<0.001) in group 1 than in group 2. There was no significant difference in the maturation rate (66.8% vs. 68.1%; p=0.698), fertilization rate (66.7% vs. 67.6%; p=0.857), or the rate of formation of good-quality blastocysts (46.2% vs. 47.2%; p=0.898) in oocytes obtained from pregnant and non-pregnant women. Conclusion: The developmental competence of immature oocytes did not differ between pregnant and non-pregnant women.
Keywords
Competence; Oocyte in vitro maturation; Pregnant women;
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