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Obstetrics & Gynecology 1989;73:196-200
© 1989 by The American College of Obstetricians and Gynecologists
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Binding Sites for Gonadotropins in Human Postmenopausal Ovaries

RYOSUKE NAKANO, MD, KAZUO SHIMA, MD, MAREO YAMOTO, MD, MITSUKO KOBAYASHI, MD, KEIJI NISHIMORI, MD and JUN-ICHI HIRAOKA, PhD

From the Departments of Obstetrics and Gynecology and Anatomy, Wakayama Medical College, Wakayama, Japan

Abstract

The binding of human LH and human FSH to postmenopausal ovarian tissue from 21 patients with cervical carcinoma was analyzed. The binding sites for FSH and LH were demonstrated in postmenopausal ovarian tissue. The surface-binding autoradiographic study revealed that the binding sites for gonadotropins were localized in the cells of cortical stroma of the postmenopausal ovary. In addition, diffuse cytoplasmic staining of endogenous estrogen and 3ß–hydroxysteroid dehydrogenase activity were detected immunohistochemically and histochemically in the cells of the cortical stroma. Electron microscopic study also suggested steroidogenic function in the cells of the cortical stroma. The results of the present study suggest that postmenopausal ovaries contain specific binding sites for pituitary gonadotropins and play a role in ovarian steroidogenesis. (Obstet Gynecol 73:196, 1989)




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Copyright © 1989 by the American College of Obstetricians and Gynecologists.