Iranian
Biomedical Journal
Volume 16, Issue 1 (1-2012)
IBJ 2012, 16(1): 33-37 |
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Beigi Boroujeni M, Beigi Boroujeni N, Salehnia M, Marandi E, Beigi Boroujeni M. Ultrastructural Changes of Corpus Luteum after Ovarian Stimulation at Implantation Period. IBJ 2012; 16 (1) :33-37
URL: http://ibj.pasteur.ac.ir/article-1-647-en.html
URL: http://ibj.pasteur.ac.ir/article-1-647-en.html
Mandana Beigi Boroujeni * 
, Nasim Beigi Boroujeni , Mojdeh Salehnia , Elahe Marandi , Masoud Beigi Boroujeni
, Nasim Beigi Boroujeni , Mojdeh Salehnia , Elahe Marandi , Masoud Beigi Boroujeni
Abstract:
Background: To achieve multiple oocytes for in vitro fertilization, ovulation induction is induced by gonadotropins however, it has several effects on oocytes and embryo quality and endometrium receptivity. The aim of this study was to assess ultrastructural changes of corpus luteum after ovarian induction using human menopausal gonadotropin (HMG) and human chorionic gonadotropin (HCG) during luteal phase at implantation period. Methods: Female NMRI mice (6-8 weeks) were divided into control and stimulated groups. In the control group, the mice were rendered pseudopregnant and in the ovarian induction group, the mice were rendered pseudopregnant after the ovarian induction. The samples were obtained from the ovary in each group at the same time during luteal phase at implantation period. Ultrastructural changes were assessed using electron microscopy study. Results: Our results displayed some identifiable changes in ultrastructure of corpus luteum in ovarian induction group. These changes included enhancement of the apoptosis and intercellular space, whereas the angiogenesis was decreased. The findings indicated a decline in organelle density in the cytoplasm of ovarian induction, such as mitochondria, endoplasmic reticulum and polyribosome. Furthermore, chromatin condensation of nuclei was observed in some cells. Conclusion: The ovarian induction using HMG and HCG resulted in some ultrastructural changes on the corpus luteum at implantation period, which could affect on the pregnancy rate.
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