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  • Title: Glycerylphosphorylcholine in selected forms of male infertility.
    Author: Giovenco P, Calamera JC, Dondero F, Pacifici R, Vilar O.
    Journal: Andrologia; 1986; 18(2):171-4. PubMed ID: 3717606.
    Abstract:
    GPC was studied in the seminal plasma of 35 normozoospermic men, 34 cases of azoospermia due to bilateral deferent obstruction, 34 cases of azoospermia due to bilateral ejaculatory duct obstruction, 10 vasectomized patients, 6 vasectomized patients after vasovasostomy and 118 cases of spermatogenetic arrest without obstruction of the seminal ducts. Values of GPC in azoospermia due to deferent or ejaculatory ducts obstruction and to vasectomy are significantly lower than in normozoospermic subjects (p less than 0.001). Levels of GPC increased (p less than 0.05) following vasovasostomy. Although GPC values in secretory azoospermia were higher than those in cases of duct obstruction, they were still lower than in normozoospermic (p less than 0.001). The most likely source of GPC is the epididymis. These results support the assumption that GPC originates mainly in the epididymis. The absence of germinal cells in the epididymis could explain the decreased levels of GPC in azoospermia due to arrest of spermatogenesis.
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