Effect of isoproterenol (ISO) on rat heart, liver, kidney, and muscle tissue levels of zinc, copper, and magnesium

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Abstract
X-ray fluorescence and atomic absorption spectrometry were used to measure the concentrations of zinc, copper, and magnesium in the heart, liver, skeletal muscle, and kidney following isoproterenol-induced myocardial necrosis in male albino rats. Serum activities of lactic dehydrogenase (LDH), creatine phosphokinase (CPK), and glutamic oxaloacetic transaminase (SGOT) were also measured. There was depletion of myocardial zinc, copper, and magnesium on d 1, followed by an uptake of all these elements on d 2. The liver showed a significant uptake of magnesium, along with depletion of copper. There was no change in the kidney and skeletal muscle concentrations of these elements. Possible explanations for the observed changes and their therapeutic significance are presented.