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Abstract We examined the renal effects of synthetic oxytocin (OT) in the presence and absence of vasopressin in conscious euvolemic rats. Both sexes of the Long-Evans (LE) and Brattleboro homozygous (DI) strains were used. OT infused intravenously at 0.25 and 2.5 ng X min-1 X 100 g body wt (BW)-1...
Abstract Following the ingestion of a high-potassium-content diet for only a few days, the plasma potassium of rats rises only modestly in response to a previously lethal dose of potassium salts. This acquired tolerance, termed potassium adaptation, is principally the result of increased capacity...
Abstract The turtle bladder contains transport systems for active sodium absorption, electrogenic proton secretion, and bicarbonate secretion (coupled to chloride absorption) that are functionally separate and occur in specialized epithelial cells. Maneuvers that alter the intracellular acid-base...
Abstract A mouse monoclonal antibody designated IgG3(rct-30) has been prepared that reacts specifically with an antigen on the surface of all cells comprising the cortical and medullary rabbit renal collecting tubule including the arcades. Plastic culture dishes coated with IgG3(rct-30) were used...
Abstract Membrane vesicles from the medulla of the human kidney are capable of amiloride-inhibited sodium-proton exchange. Sodium uptake into the vesicles is stimulated by low intravesicular pH (6.0) and inhibited by both low extravesicular pH (6.0) and amiloride (2 mM). Sodium uptake is a linear...