title: Influence of testosterone substitution on sperm suppression by LHRH agonists.
abstract: To investigate the effect of LHRH (GnRH) agonists on sperm suppression, we studied the effect of a depot preparation of D-Trp6 LHRH in 10 normal men for 30 weeks. In addition, to determine the role of androgenic substitution on sperm suppression, the volunteers were divided into two groups: group 1 (n = 5) received a low dose T substitution (125 mg of T enanthate every month), while group 2 (n = 5) received a normal T substitution (120 mg of T undecanoate every day). Four men became azoospermic in group 1 and none in group 2. Moreover, administration of additional T injections in 1 volunteer of group 1 resulted in the reappearance of spermatozoa in the ejaculate. Return to the low dose therapy produced azoospermia. These results suggest that testosterone supplementation supports spermatogenesis.
authors.affiliation: Service d'Endocrinologie et des Maladies de la Reproduction, Hôpital de Bicêtre, Le Kremlin, France.
authors.forename: P
authors.initials: P
authors.lastname: Bouchard
authors.forename: E
authors.initials: E
authors.lastname: Garcia
mesh_terms: D003272:Contraceptive Agents, Male / Q000494:pharmacology*; D003692:Delayed-Action Preparations; D005640:Follicle Stimulating Hormone / Q000097:blood*; D007987:Gonadotropin-Releasing Hormone / Q000031:analogs & derivatives* / Q000494:pharmacology; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D013076:Sperm Count; D013091:Spermatogenesis / Q000187:drug effects*; D013739:Testosterone / Q000031:analogs & derivatives* / Q000097:blood / Q000494:pharmacology; D017329:Triptorelin Pamoate
chemical_list: D003272:Contraceptive Agents, Male; D003692:Delayed-Action Preparations; D017329:Triptorelin Pamoate; D007987:Gonadotropin-Releasing Hormone; D013739:Testosterone; C004648:testosterone enanthate; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone; C010792:testosterone undecanoate