Autoradiographic Analysis of Gonadotropin Binding to Rat Ovarian Tissue Sections

  • A. Rees MidgleyJr.
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 36)


Autoradiographic analysis of serial frozen tissue sections revealed that radioiodinated protein hormones, applied topically, were bound specifically and selectively to target tissues. To study relationships between the functional state of target tissues and protein hormone binding, autoradiographic analysis was performed on ovaries from rats with different known physiologic states. Changes in ovarian and pituitary function were assessed by radioimmunoassay of progesterone, luteinizing hormone (LH), follicle stimulating hormone (FSH), and prolactin in serum. Corpora lutea and interstitial tissue bound labeled rat growth hormone, ovine prolactin, and human chorionic gonadotropin (hCG). The extent of this binding varied with endogenous hormone concentrations and with the functional state of the ovary. At all times, thecal cells bound labeled hCG and granulosa cells of some moderate to large follicles bound labeled FSH. Granulosa cells bound other hormones variably. These results indicate the existence of specific intraovarian tissue-hormone binding, presumably to receptors, and suggest that this receptor activity varies with the functional state of the intraovarian tissues.


Luteinizing Hormone Granulosa Cell Corpus Luteum Large Follicle Serum Luteinizing Hormone 
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Copyright information

© Plenum Press, New York 1973

Authors and Affiliations

  • A. Rees MidgleyJr.
    • 1
  1. 1.Reproductive Endocrinology Program, Department of PathologyThe University of MichiganAnn ArborUSA

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