BACKGROUND AND OBJECTIVES Insulin has several physiologic actions that include stimulation of cellular glucose and potassium uptake. The ability of insulin to induce glucose uptake by cells is impaired in type 2 diabetes mellitus, but whether potassium uptake is similarly impaired is not known. This study examines whether the cellular uptake of these molecules is regulated in concert or indepen...

OBJECTIVE To review the metabolism and function of potassium and causes and management of hypokalaemia. DATA SOURCES A review of studies reported from 1966 to 1998 and identified through a MEDLINE search of the English-language literature of hypokalaemia. SUMMARY OF REVIEW Potassium is predominantly an intracellular ion that contributes to approximately 50% of the intracellular fluid osmola...

Refractive indices for the crystals potassium dihydgrogen phosphate, potassium titanyl phosphate and potassium niobate are measured. Samples of KDP from different crystal growers had slightly different refractive indices. The refractive indices of KDP for ordinary rays are studied as a function of temperature. The temperature coefficient of the refractive indices has little dependence on the wa...

1. The transport of sodium by frog skin and the maintenance of normal potassium levels within the cells of the skin are both dependent on metabolism and on a supply of phosphate bond energy. 2. Except for the common requirement of phosphate bond energy, the transfer mechanism for sodium and the mechanism for maintaining intracellular potassium appear to be independent. 3. The xanthines specific...

BACKGROUND Oral sodium phosphate is currently used for colon preparation prior to colonoscopy or barium enema. Sodium phosphate induces hyperphosphatemia, hypocalcemia, and hypokalemia. Elderly patients are at an increased risk for phosphate intoxication due to decreased glomerular filtration rate, medication use, and systemic and gastrointestinal diseases. We investigated these electrolyte dis...

From the Research Division, J. T. Baker Chemical Co., Phillipsburg, N. J. 08865. 1 Paper IV in the series “The Practical Analysis of High-Purity Chemicals.” Presented at the 22nd National Meeting of the AACC, Buffalo, N.Y., July 1970. Received April22, 1971; accepted June 3, 1971. Calcium carbonate Lithium carbonate Magnesium acetate Potassium chloride Potassium monobasic phosphate Sodium chlor...

The permeability properties of the inner membrane of mung bean mitochondria were studied by osmotic swelling techniques. Rapid mitochondrial swelling was observed in isotonic ammonium phosphate, which indicated that an active phosphate/hydroxyl antiporter was present. The phosphate carrier was specifically inhibited by sulfhydryl reagents. Mitochondria did not swell in isotonic ammonium salts o...