Effect of glucose/insulin infusion and magnesium supplementation on serum and muscle sodium and potassium and muscle [3H]ouabain binding capacity in Type 1 diabetes mellitus

Scandinavian Journal of Clinical and Laboratory Investigation
M S DjurhuusK K Pedersen

Abstract

Glucose has recently been found to decrease muscle potassium content. The aim of this study was to evaluate the effect of the infusion of glucose and insulin and the effect of magnesium supplementation on serum and muscle sodium and potassium and muscle [3H]ouabain binding capacity in patients with Type 1 diabetes mellitus and in controls. Muscle potassium and sodium content, muscle [3H]ouabain binding capacity and serum potassium and sodium concentrations were determined in 10 patients with Type 1 diabetes mellitus and in 5 controls before and after an euglycaemic, hyperinsulinaemic clamp, and after an intravenous magnesium load test. Nine of the patients with Type 1 diabetes mellitus were restudied after 24 weeks of oral magnesium oxide supplementation. Basic serum and muscle sodium and potassium and muscle [3H]ouabain binding capacity did not differ between groups. The infusion of glucose and insulin reduced muscle potassium content, whereas muscle sodium content was unchanged. There were no differences between groups. Oral magnesium oxide supplementation increased muscle potassium content by 6%. Muscle [3H]ouabain binding capacity was unchanged. In patients with Type 1 diabetes mellitus, the intravenous infusion of magnesiu...Continue Reading

Citations

May 11, 2005·Expert Opinion on Investigational Drugs·Peter M Fischer, Athos Gianella-Borradori

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