title: Sterilization by vas occlusion without transection does not reduce postvasectomy sperm-agglutinating antibodies in serum. A randomized trial of vas occlusion versus vasectomy.
abstract: The influence of transection of the vasa on the increase in sperm-agglutinating activity in serum after vasectomy was investigated in a prospective randomized study. Sixty-eight males requesting vasectomy were allocated to either of two groups: vas occlusion by tantalum clips without transection of the vasa, or conventional vasectomy by transection and ligation. Sperm-agglutinating antibodies were determined by a micro-agglutination test before and 6 months after vasectomy or vas occlusion. A significant increase in sperm-agglutinating activity in serum after sterilization was found in both groups, but there was no intergroup difference.
mesh_terms: D000328:Adult; D000372:Agglutination Tests; D001323:Autoantibodies / Q000032:analysis*; D003250:Constriction; D006801:Humans; D008026:Ligation; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011897:Random Allocation; D013073:Sperm Agglutination; D013245:Sterilization, Reproductive; D013635:Tantalum; D014649:Vas Deferens / Q000473:pathology; D014659:Vasectomy
chemical_list: D001323:Autoantibodies; D013635:Tantalum