Sodium pump and calcium channel modulation of Mg-deficiency cardiomyopathy.


Hamsters fed a Mg-deficient diet (MD) develop a cardiomyopathy (CM) with foci of myocardial necrosis, calcification, and modest mononuclear and giant cell infiltration. We hypothesize that the lesions are secondary to Ca overload following an increase in myocardial Na due to inhibition of (Na.K)-ATPase and secondary Na-Ca exchange. Nifedipine and digoxin… (More)


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