Rescue of spermatogenesis arrest in azoospermic men after long-term gonadotropin treatment.

Several studies have shown that FSH treatment can improve sperm production quantitatively and increase the spermatogonial population in oligozoospermic men with normal hormonal profiles. In this study, we describe the results of long-term gonadotropin therapy of normogonadotropic patients with nonobstructive azoospermia.

Gonadotropin treatment of an azoospermic patient with a Y-chromosome microdeletion.

Objective: To report on the treatment with recombinant FSH of an azoospermic normogonadotropic patient with a Y-chromosome microdeletion.

Design: Case report.

Setting: An assisted reproduction center.

Effect of highly purified urinary follicle-stimulating hormone on oocyte and embryo quality.

Objective: To determine the effects of ovarian stimulation with highly purified urofollitropin on oocyte and embryo quality.

Design: Parallel randomized open-label clinical study.

Setting: Assisted reproduction centers.