All-trans retinoic acid and fibroblast growth factor-2 enhance the fertility rate and embryo development in polycystic ovary syndrome mouse model

Document Type : Original Article

Authors

1 Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Iran

2 Cellular and Molecular Research Center, Research Institute for Non-communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran

3 Department of Anatomical Sciences, Faculty of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran

4 Faculty of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran

5 Cellular and Molecular Research Center, Research Institute for Health Development, Department of Anatomical Sciences, Kurdistan University of Medical Sciences, Sanandaj, Iran

6 Medical Plants Research Center, Basic Health Sciences Institute, Faculty of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran

7 Department of Epidemiology and Biostatistics, Shahrekord University of Medical Sciences, Shahrekord, Iran

Abstract

Objective(s): Polycystic ovary syndrome (PCOS) causes a developmental arrest of antral follicles and disrupts oocyte maturation. Retinoic acid (RA) and Fibroblast Growth Factor-2 (FGF2) are effective in follicle growth, thus their effects on histopathology and in vitro fertility of oocytes were investigated in PCOS-induced mice.
Materials and Methods: Eighty female NMRI mice were randomly divided into 8 groups including 1-Normal mice, 2-PCOS mice without any treatment, 3-Normal mice treated with RA, 4-Normal mice treated with FGF2, 5-PCOS mice treated with RA, 6- PCOS mice treated with FGF2, 7- PCOS mice treated with RA and FGF2, and 8- Normal mice treated with RA and FGF2. Following PCOS induction, the mice were treated with intraperitoneal RA and FGF2 as a treatment. Then ovarian stimulation, for preparing the oocyte and embryo microscopic examinations was performed. After oocyte morphometry, through in vitro fertilization, the embryo formation was assessed. Data was analyzed by one-way ANOVA and Tukey tests.
Results: The results showed simultaneous injection of RA and FGF2 into PCOS-induced mice increases antral follicles and corpus luteum, but decreases cystic follicles. Simultaneous injection of these two substances into healthy mice increases the pre-antral follicles and corpus luteum. Simultaneous injection of RA and FGF2 increases the number of embryos in both control and intervention groups. 
Conclusion: It can be concluded that RA and FGF2 increase the maturity of ovarian follicles, the number of two-celled embryos, and the number of grade-A embryos in mice with PCOS, which is more effective when these two substances are injected simultaneously.

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Main Subjects

References

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Iranian Journal of Basic Medical Sciences
Volume 27, Issue 4
April 2024
Pages 418-424

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