title: Testicular blood flow in young and old rats and influence of hCG.
abstract: To evaluate the influence of age, testicular capillary blood flow (TCBF) was measured, using the microsphere technique, in rats 3 to 24 months old, under basal conditions and after hCG stimulation (10 IU/d for two days). Despite a decline in plasma T levels, testicular capillary blood flow did not decrease with age, and hCG stimulation resulted in similar increases of approximately 50% (P less than 0.01) in testicular capillary blood flow in all age groups. We concluded that the age-associated decrease in testosterone secretion in rats is not the consequence of a decreased testicular blood flow.
mesh_terms: D000375:Aging; D000818:Animals; D002196:Capillaries / Q000502:physiology; D006063:Chorionic Gonadotropin / Q000494:pharmacology*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D012039:Regional Blood Flow / Q000187:drug effects; D013737:Testis / Q000098:blood supply*; D014655:Vascular Resistance
chemical_list: D006063:Chorionic Gonadotropin