title: Pituitary-gonadal feedback in testicular disorders.
abstract: Stimulation response of the pituitary to LHRH and testicular biopsy were investigated in 17 infertile men in comparison to 10 healthy controls. A significant elevation of basal FSH and LHRH-stimulated FSH serum levels was observed in Sertoli cell only syndrome and spermatogenetic arrest, while LH and testosterone remained normal. The LHRH test seems to be of value for differentiation of pretesticular, testicular and posttesticular infertility.
mesh_terms: D001706:Biopsy; D005246:Feedback; D005640:Follicle Stimulating Hormone / Q000097:blood*; D007987:Gonadotropin-Releasing Hormone; D006801:Humans; D007248:Infertility, Male / Q000097:blood; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D010902:Pituitary Gland / Q000503:physiopathology*; D013733:Testicular Diseases / Q000503:physiopathology*; D013737:Testis / Q000473:pathology / Q000503:physiopathology*; D013739:Testosterone / Q000097:blood
chemical_list: D007987:Gonadotropin-Releasing Hormone; D013739:Testosterone; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone