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Korean Journal of Obstetrics & Gynecology 2003;46(3):592-599.
Published online March 1, 2003.
Influence of Activin and Follistatin on Expression of Insulin-like Growth Factor (IGF)-I, II, Insulin-like Growth Factor Binding Protein (IGFBP)-1, 2, and 3 mRNA in Cultured Mouse Granulosa Cells.
Hee Dong Chae, Seok Ho Hong, Yun Hyun Cho, Young Mi Oh, Bang Hyun Lee, Sung Hoon Kim, Chung Hoon Kim, Byung Moon Kang
Department of Obstetrics and Gynecology, College of Medicine, University of Ulsan, Asan Medical Center, Seoul, Korea.
To investigate the influence of activin and follistatin on the expression of IGF (insulin-like growth factor)-I, II, IGFBP (insulin-like growth factor binding protein)-1, 2, and 3 mRNA in cultured mouse granulosa cells MATERIALS AND METHODS: The granulosa cells were obtained from the mouse and cultured for 6 days with 10 ng/ml of activin, 10 ng/ml of follistatin, and 10 ng/ml of activin with 10 ng/m of follistatin, respectively. The cells not treated with activin or follistatin served as control. Reverse transcription-polymerase chain reaction (RT-PCR) has been used to examine the expression of IGF-I, II, IGFBP-1, 2, and 3 mRNA. Results were analyzed with Kolmogorov-Smirnov test and analysis of variance (ANOVA) and statistical significance was defined as p<0.05. RESULTS: The expression of IGF-I and II mRNA were not different significantly. However, the expression of IGFBP-3 mRNA was significantly increased in the follistatin group compared to the control group (p<0.05) and significantly decreased in the activin with follistatin group compared to the control group (p<0.05). The expression of IGFBP-1 mRNA was seemed to be increased in the activin group and decreased in the follistatin group compared to the control group, respectively (p=0.07, p=0.07). The expression of IGFBP-2 and 3 mRNA were seemed to be decreased in the activin group compared to the control group (p=0.06, p=0.07, respectively). CONCLUSION: Activin and follistatin might play a role as regulators of mouse ovarian physiology by modulating the IGF system, especially IGFBPs.
Key Words: Activin, Follistatin, Insulin-like growth factor system, Cultured mouse granulosa cells

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