title: Ion transporters for fluid reabsorption in the rooster (Gallus domesticus) epididymal region.
abstract: Testicular fluid is highly condensed during its passage through the epididymal region in the avian species. In the present study, major ion transporters that are responsible for condensation mainly by water resorption in the reproductive tract as identified in the mammalian epididymis were localized within the rooster (Gallus domesticus) epididymis by immunohistochemistry. The results show that the efferent ductule epithelium expressed sodium-potassium ATPase (Na(+),K(+)-ATPase), carbonic anhydrase II (CAII) and sodium hydrogen exchanger isoform 3 (NHE3) and that the connecting ductule and epididymal duct epithelia expressed Na(+),K(+)-ATPase and CAII. These data suggest that a model proposed for reabsorption in mammalian efferent ductules can be applied to avian efferent ductules.
authors.affiliation: Department of Animal Sciences, University of Illinois at Urbana-Champaign, 1207 W. Gregory Dr., Urbana, IL 61801, USA. jbahr@uiuc.edu
authors.forename: J M
authors.initials: JM
authors.lastname: Bahr
authors.forename: M
authors.initials: M
authors.lastname: Dalponte
authors.forename: S
authors.initials: S
authors.lastname: Janssen
authors.forename: D
authors.initials: D
authors.lastname: Bunick
authors.forename: M
authors.initials: M
authors.lastname: Nakai
mesh_terms: D000042:Absorption; D000818:Animals; D001826:Body Fluids / Q000502:physiology*; D024402:Carbonic Anhydrase II / Q000032:analysis; D002645:Chickens; D004822:Epididymis / Q000737:chemistry / Q000502:physiology*; D004847:Epithelial Cells / Q000737:chemistry; D007150:Immunohistochemistry; D016623:Ion Pumps / Q000032:analysis* / Q000502:physiology; D008297:Male; D000074083:Sodium-Hydrogen Exchanger 3; D017923:Sodium-Hydrogen Exchangers / Q000032:analysis; D000254:Sodium-Potassium-Exchanging ATPase / Q000032:analysis
chemical_list: D016623:Ion Pumps; D000074083:Sodium-Hydrogen Exchanger 3; D017923:Sodium-Hydrogen Exchangers; D024402:Carbonic Anhydrase II; D000254:Sodium-Potassium-Exchanging ATPase