Abstract
The effect of long-term hCG administration on sperm output was evaluated in a study in 3 hypogonadal patients with a selective deficiency of gonadotrophins (LH and FSH). The diagnosis of complete hypogonadotropic hypogonadism was based on clinical and hormonal findings as well as testicular histology. Pubertal maturation took place gradually during hCG therapy. 2 out 3 patients, who were azoospermic before treatment, had spermatozoa in their ejaculate after 12 and 24 months of therapy respectively. These effects on spermatogenesis were reversed after hCG withdrawal for 4 months and the patients again became azoospermic. This azoospermia was not reversed by testosterone (T) replacement therapy, or by addition of HMG to T. In vitro, the crude hCG preparation stimulated cAMP accumulation in rat Sertoli cell cultures indicating that this hCG preparation possesses an 'FSH-like' action. The present findings indicate that hCG therapy alone can induce and maintain spermatogenesis in some patients with complete hypogonadotropic hypogonadism.
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