Renal mechanisms of potassium depletion
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Kathleen Roberts , Henry Randall , Harold Sanders , and Margaret Hood
It is generally recognized that potassium deprivation may result in the development of a plasma alkalosis, which is characterized by the paradoxical excretion of an acid urine (1-12). Conversely, the administration of sufficient potassium chloride results in a plasma acidosis and the simultaneous excretion of an alkaline urine (8, 13-16). Studies previously reported have shown that the dichotom...
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KAMM, DONALD E., AND GERALD L. STROPE. Glutamine and glutamate metabolism in renal cortex from potassium-depleted rats. Am. J. Physiol. 224(6) : 1241-1248. 1973.-Both potassium depletion and acidosis increase renal ammonia production. In the present experiments, the metabolism of glutamine and glutamate by renal cortex slices from potassium-depleted rats has been compared with that previously f...
متن کاملIncreased ammoniagenesis and the renal tubular effects of potassium depletion.
The cause of the morphological changes and functional defects in the renal tubule seen in patients with severe potassium depletion is unknown. In man and animals potassium status is a major factor regulating ammonia synthesis in the kidney and urinary ammonium excretion. A primary effect of potassium depletion is to cause an increase in ammoniagenesis by the renal tubular cells. It is proposed ...
متن کاملInfluence of Potassium Depletion on Myocardial Concentration of Tritlated Digoxin
The influence of potassium deficiency on myocardial H-digoxin concentration in the mouse was studied. Tritiated digoxin, 400 /Ag/kg, was injected intraperitoneally into mice, which were killed at varying time intervals, and the "H-digoxin was extracted. One-half of the mice were made potassium deficient by a diet free of potassium. In control animals, myocardial H-digoxin was maximal by 30 min ...
متن کاملSodium wasting in potassium depletion: the role of aldosterone.
Impaired renal conservation of sodium (Na) has been reported in potassium (K)-depleted humans and experimental animals when challenged with sodium restriction(l-3); however, the magnitude, duration, or mechanism of this phenomenon have never been clearly defined. It is known that potassium depletion depresses aldosterone secretion and that sodium restriction stimulates it(l,4-7). Johnson et al....
متن کاملThe Renal Lesions of Electrolyte Imbalance
Potassium depletion in rats augments the specific renal lesions of phosphate loading. Since it has been shown that phosphate loading increases the specific cardiac lesions of potassium deficiency (12), it is concluded that the similar types of electrolyte imbalance (potassium depletion-phosphate load) act conversely in the two organs.
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