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  • Title: Species- and organ-specificity of secretory proteins derived from human prostate and seminal vesicles.
    Author: Aumüller G, Seitz J, Lilja H, Abrahamsson PA, von der Kammer H, Scheit KH.
    Journal: Prostate; 1990; 17(1):31-40. PubMed ID: 1696713.
    Abstract:
    Polyclonal antibodies against semenogelin (SG) isolated from human seminal vesicle secretion and acid phosphatase (PAP), beta-microseminoprotein (beta-MSP), and Prostate-Specific Antigen (PSA) derived from human prostatic fluid, as well as a monoclonal antibody against beta-MSP were used for immunocytochemical detection of the respective antigens in different organs from different species. SG immunoreactivity was detected in the epithelium of the pubertal and adult human and in monkey seminal vesicle, ampulla of the vas deferens, and ejaculatory duct. PAP, beta-MSP, and PSA immunoreactivities were detected in the pubertal and adult human prostate and the cranial and caudal monkey prostate. With the exception of a weak PSA immunoreactivity in the proximal portions of the ejaculatory duct, none of the latter antisera reacted with seminal vesicle, ampullary, and ejaculatory duct epithelium. Among the non-primate species studied (dog, bull, rat, guinea pig) only the canine prostatic epithelium displayed a definite immunoreactivity with the PAP antibody and a moderate reaction with the PSA antibody. No immunoreaction was seen in bull and rat seminal vesicle and canine ampulla of the vas deferens with the SG antibody. The same was true for the (ventral) prostate of rat, bull, and dog for beta-MSP. The epithelium of the rat dorsal prostate showed a slight cross-reactivity with the monoclonal antibody against beta-MSP and one polyclonal antibody against PSA. The findings indicate a rather strict species-dependent expression of human seminal proteins which show some similarities in primates, but only marginal relationship to species with different physiology of seminal fluid.
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