Epididymal Secretion of myo-Inositol

  • Trevor G. Cooper


Concentrations of inositol decrease along the length of the epididymis of rabbits and bulls (Voglmayr and Amann. 1973) but increase in the rat (Voglmayr, 1974). Scyllo-inositol and glycerophosphoinositol arc also found in epididymal tissue (Seamark et al., 1968) and concentrations of phosphatidylinositol are greater in the head than the tail of the rat epididymis (Scott et al., 1963). Although present in the epididymal lumen in all species, concentrations of free inositol in farm animals (2mM boar: Hartree, 1957; 1–3.7mM ram: Voglmayr et al., 1977; Hinton et al., 1980; 2.5mM bull: Voglmayr and Amann, 1973) are considerably lower than those of rodents (30mM rat; 90 m.M hamster: Hinton et al., 1980) and man (Setchell and Hinton, 1981; Hinton and Setchell, 1981). In man the concentration of myo-inositol in human seminal plasma does not vary in individual fractions of a split ejaculate (Brown-Woodman et al., 1980), so it is thought to arise from all accessory glands, not just the prostate (Lewin and Beer, 1973). Changes along the length of the organ are given in Table 17.


Seminal Plasma Cyproterone Acetate Epididymal Spermatozoon Testicular Spermatozoon Human Seminal Plasma 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1986

Authors and Affiliations

  • Trevor G. Cooper
    • 1
  1. 1.Max-Planck-Gesellschaft zur Förderung der Wissenschaften e. V.Klinische Forschungsgruppe für Reproduktionsmedizin an der Frauenklinik der Universität MünsterMünsterGermany

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