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Seminal fluid androgen binding protein

S R Plymate, B L Fariss, M L Smith

    Andrologia
    |July 1, 1981
    PubMed
    Summary
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    Researchers detected androgen binding protein (ABP) in human ejaculate using polyacrylamide gel electrophoresis and saturation analysis. This seminal fluid protein is similar to that found in Sertoli cells.

    Area of Science:

    • Reproductive Biology
    • Endocrinology
    • Biochemistry

    Background:

    • Androgen binding protein (ABP) plays a crucial role in male reproductive physiology.
    • Its presence and characteristics in human seminal fluid require detailed investigation.

    Purpose of the Study:

    • To determine the presence and concentration of ABP in human ejaculate.
    • To characterize seminal fluid ABP and compare it to ABP from other sources, such as Sertoli cells.

    Main Methods:

    • Seminal fluid samples from ten fertile men were analyzed.
    • Techniques included polyacrylamide gel electrophoresis (PAGE), incubation with tritiated dihydrotestosterone (DHT), Concanavalin-A sepharose binding, and Scatchard analysis.

    Main Results:

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  • PAGE identified ABP in seven out of ten seminal fluid samples.
  • ABP concentrations ranged from 0.132 to 0.468 nanomoles ABP/dl semen.
  • DHT binding was effectively removed by Concanavalin-A sepharose.

    • Conclusions:

    • Human seminal fluid contains an ABP.
    • This seminal ABP exhibits characteristics similar to ABP found in Sertoli cells.
    • The findings contribute to understanding androgen transport and regulation in the male reproductive tract.