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Forward [creatine phosphate (CP)----adenosine 5'-triphosphate (ATP)] and reverse (ATP----CP) fluxes of myocardial creatine kinase (CK) measured by using 31P nuclear magnetic resonance (NMR) and conventional saturation transfer (CST) methods are unequal; this is a paradoxical result because during steady state fluxes into and out of the CP pool must be the(More)
High resolution 1H NMR spectra of perfused rat hearts have been obtained under normoxic, ischemic and hypoxic conditions. Several myocardial metabolites including taurine, carnitine, lactate and tissue glycerides are detected in the 1H NMR spectra. Changes in oxygen availability induce perturbations in the levels of some metabolites, in particular, lactate.(More)
Electrooxidizable ascorbate, urate, and acetaminophen that interfere with amperometric glucose assays are completely and rapidly oxidized by hydrogen peroxide in a multilayer electrode. The multilayer electrode is composed of an immobilized, but not electrically "wired", horseradish peroxidase (HRP) film coated onto a film of electrically "wired" glucose(More)
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