Nephron

Original Paper

Skeletal Muscle Metabolism in Uremic Rats: A 31P-Magnetic Resonance Study

Thompson C.H. · Kemp G.J. · Green Y.S. · Rix L.K. · Radda G.K. · Ledingham J.G.G.

Author affiliations

Medical Research Council Biochemical and Clinical Magnetic Resonance Unit, John Radcliffe Hospital, Oxford, UK

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Nephron 1993;63:330–334

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Accepted: May 26, 1992
Published online: December 12, 2008
Issue release date: 1993

Number of Print Pages: 5
Number of Figures: 0
Number of Tables: 0

ISSN: 1660-8151 (Print)
eISSN: 2235-3186 (Online)

For additional information: https://www.karger.com/NEF

Abstract

The effect of uremia on skeletal muscle metabolism of the rat was examined using 31P-magnetic resonance spectroscopy. Three weeks following either a 5/6 nephrectomy or a sham operation, Wistar rats were placed in a 7T magnet, and the sciatic nerve was stimulated for 10 min. Analysis of spectra allowed calculation of intracellular pH and the relative concentrations of phosphocreatine (PCr), inorganic phosphate (Pi) and ATP. [ADP] was calculated from the creatine kinase equilibrium. There was a significant reduction in the resting intracellular [Pi] despite an elevation in extracellular [Pi], probably due to a reduction in the activity of the membrane Na/Pi cotransporter on account of a reduced sodium gradient. Despite anemia and uremia, there were no significant metabolic abnormalities during exercise and recovery accompanying this substantial reduction in glomerular filtration rate implying that at this level of renal impairment, there is no mitochondrial dysfunction.

© 1993 S. Karger AG, Basel




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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Accepted: May 26, 1992
Published online: December 12, 2008
Issue release date: 1993

Number of Print Pages: 5
Number of Figures: 0
Number of Tables: 0

ISSN: 1660-8151 (Print)
eISSN: 2235-3186 (Online)

For additional information: https://www.karger.com/NEF


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