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Clinical Trial
Journal Article
Pulsatile gonadotropin-releasing hormone treatment of men with idiopathic hypogonadotropic hypogonadism.
Hormone Research 2002
OBJECTIVES/METHODS: To induce testicular growth and spermatogenesis, 11 patients with idiopathic hypogonadotropic hypogonadism were treated with long-term subcutaneous pulsatile gonadotropin-releasing hormone (GnRH) administration. Three patients had a history of undescended testes. Patients who did not respond to therapy with a sufficient increase in serum testosterone or spermatogenesis were offered additional injections with hCG or, after discontinuation of GnRH, either combined therapy with hCG and hMG or recombinant FSH.
RESULTS: During treatment testicular volume and serum levels of FSH, LH and testosterone increased. Semen analysis revealed the presence of spermatogenesis in 9 of the 11 patients (8 on GnRH alone and in 1 when hCG/hMG was subsequently instituted), and 7 pregnancies have resulted thus far.
CONCLUSION: Pulsatile GnRH therapy is a well-tolerated and effective therapy for the induction of spermatogenesis in some men with idiopathic hypogonadotropic hypogonadism. It appears that a significant fraction of them should be treated for a minimum of 1-2 years to maximize testicular growth and achieve spermatogenesis. Cryptorchidism was a negative prognostic factor.
RESULTS: During treatment testicular volume and serum levels of FSH, LH and testosterone increased. Semen analysis revealed the presence of spermatogenesis in 9 of the 11 patients (8 on GnRH alone and in 1 when hCG/hMG was subsequently instituted), and 7 pregnancies have resulted thus far.
CONCLUSION: Pulsatile GnRH therapy is a well-tolerated and effective therapy for the induction of spermatogenesis in some men with idiopathic hypogonadotropic hypogonadism. It appears that a significant fraction of them should be treated for a minimum of 1-2 years to maximize testicular growth and achieve spermatogenesis. Cryptorchidism was a negative prognostic factor.
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