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    • Biological characteristics of a factor suppressing follicle stimulating hormone (inhibin) from ovine testes

      H M Shashidhara Murthy N R Moudgal

      Volume 5 Issue 2 June 1983 pp 115-123

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jbsc/005/02/0115-0123

    • Keywords

       

      Regulation of FSH; testicular function; gonadotropin

    • Abstract

       

      Inhibin (follicle stimulating hormone suppressing factor) isolated from ovine testes has been characterized for its biological activity using a variety of tests. The bioassay used — inhibition of the human chorionic gonadotropin induced increment in the mouse uterine weight-demonstrates that there is a significant increment in specific activity (approx. 300-fold) with the progress of purification. Eventhough the final product has not been obtained in a homogenous state it has been possible to show that(a) [125I]-labelled inhibin is preferentially taken up and retained by the pituitary, pretreatment of rats with testosterone facilitating this uptake;(b) it is able to suppress specifically the levels of follicle stimulating hormone in castrated as well as immature intact rats and (c) treatment of immature male rats with inhibin preparation for ten days results in impairment of testicular function as judged by3H-thymidine incorporation into testicular DNA and testicular hyaluronidase activity.

    • Author Affiliations

       

      H M Shashidhara Murthy1 2 N R Moudgal1

      1. Laboratory of Endocrine Biochemistry, Centre for Advanced Study in Reproductive Biology (ICMR), Indian Institute of Science, Bangalore - 560 012
      2. Hormone Research Laboratory, University of California Medical School, San Francisco, CA - 94143, USA

    • Dates

       
      Published
      June 1983
      Manuscript received
      1 March 1983
      Manuscript revised
      10 May 1983

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