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  • Title: Immunologically reactive albumin-like protein in human testis and seminal plasma.
    Author: Orlando C, Casano R, Forti G, Barni T, Vannelli GB, Balboni GC, Serio M.
    Journal: J Reprod Fertil; 1988 Jul; 83(2):687-92. PubMed ID: 3411558.
    Abstract:
    An immunologically reactive albumin-like protein (albumin) was localized, by an immunostaining technique, in the testis of infertile men (normal spermatogenesis, obstructive azoospermia) at the level of the Sertoli cells and in some cells of the germinal epithelium (secondary spermatocytes and early spermatids). No positive reaction was detectable in prepubertal testis. In vasectomized men, mean seminal albumin values were drastically reduced (by about 80%) in comparison to fertile controls, indicating a probable testicular origin. Mean seminal albumin values were also decreased in patients affected by azoospermia due to a seminiferous tubular lesion (about 40%) and in oligozoospermic patients (about 30%). In the same seminal samples transferrin, an index of Sertoli cell function, was also measured. Albumin and transferrin results were well correlated in the seminal plasma of each group (with the exception of vasectomized subjects), including a group of men with abnormally high concentrations of seminal transferrin. A weak correlation was found between seminal albumin and sperm count. We suggest that the presence of albumin in the human adult testis and in seminal plasma could be related to its ability to transport androgens.
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