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Effects of recombinant human FSH (rhFSH), urinary purified FSH (uFSH), and hMG on small preantral follicles and tertiary follicles from normal adult and androgen-sterilized female mice.
Fertility and Sterility 2000 Februrary
OBJECTIVE: To examine the stage-specific follicular response to recombinant human FSH (rhFSH), urinary FSH (uFSH), and hMG preparations.
SETTING: In vitro follicle culture.
INTERVENTION(S): Small preantral and tertiary follicles isolated from adult normal BDF-1 mice and androgen-sterilized mice were cultured with rhFSH, uFSH, and hMG for 4 days.
MAIN OUTCOME MEASURE(S): Follicular diameter. Immunoreactive inhibin, E2, and progesterone concentrations in cultured medium.
RESULT(S): The minimal effective dose of rhFSH, uFSH, and hMG for the follicular growth of small preantral follicles from normal mice was 10 mIU/mL, 1 mIU/mL, and 0.1 mIU/mL, respectively. For tertiary follicles from normal mice, the minimal effective dose of rhFSH, uFSH, and hMG was 10 mIU/mL, 10 mIU/mL, and 1 mIU/mL, respectively. The minimal effective dose of hMG for the follicular growth of small preantral follicles from androgen-sterilized mice was 0.01 mIU/mL, and that of rhFSH and uFSH on tertiary follicles from androgen-sterilized mice was 1 mIU/mL and 10 mIU/mL, respectively. No significant increase was found in the follicular diameter of the tertiary follicles from androgen-sterilized mice as a result of stimulation by hMG, but an hMG dose of >10 mIU/mL produced a significant increase in progesterone secretion.
CONCLUSION(S): Human menopausal gonadotropin preparation acts detrimentally on follicles from androgen-sterilized mice by increasing the sensitivity of small preantral follicles to FSH and by inducing the luteinization of tertiary follicles.
SETTING: In vitro follicle culture.
INTERVENTION(S): Small preantral and tertiary follicles isolated from adult normal BDF-1 mice and androgen-sterilized mice were cultured with rhFSH, uFSH, and hMG for 4 days.
MAIN OUTCOME MEASURE(S): Follicular diameter. Immunoreactive inhibin, E2, and progesterone concentrations in cultured medium.
RESULT(S): The minimal effective dose of rhFSH, uFSH, and hMG for the follicular growth of small preantral follicles from normal mice was 10 mIU/mL, 1 mIU/mL, and 0.1 mIU/mL, respectively. For tertiary follicles from normal mice, the minimal effective dose of rhFSH, uFSH, and hMG was 10 mIU/mL, 10 mIU/mL, and 1 mIU/mL, respectively. The minimal effective dose of hMG for the follicular growth of small preantral follicles from androgen-sterilized mice was 0.01 mIU/mL, and that of rhFSH and uFSH on tertiary follicles from androgen-sterilized mice was 1 mIU/mL and 10 mIU/mL, respectively. No significant increase was found in the follicular diameter of the tertiary follicles from androgen-sterilized mice as a result of stimulation by hMG, but an hMG dose of >10 mIU/mL produced a significant increase in progesterone secretion.
CONCLUSION(S): Human menopausal gonadotropin preparation acts detrimentally on follicles from androgen-sterilized mice by increasing the sensitivity of small preantral follicles to FSH and by inducing the luteinization of tertiary follicles.
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