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  • Title: In vitro inhibition of rat heart sarcoplasmic reticular membrane ATPase activities by amphotericin B and their reversal by fructose-1,6-diphosphate.
    Author: Rao MR, Hutcheson AE, Markov AK.
    Journal: Biochem Mol Biol Int; 1995 Nov; 37(5):821-5. PubMed ID: 8624486.
    Abstract:
    The effect of amphotericin B on rat heart sarcoplasmic reticular membrane Na(+)-K+ and Ca2+ ATPase activities in vitro was investigated. Amphotericin B in selected concentrations of 100-1000 ng significantly inhibited the sarcoplasmic reticular membrane ATPase activities studied. Fructose-1,6-diphosphate (1000 microM concentration) completely reversed the inhibition of Ca2+ ATPase activity in particular, but failed to reverse that of Na+(-)K+ATPase activities at 1000 microM concentration. Fructose-1,6-diphosphate may afford some protection against 1000 ng amphotericin B-induced myocardial toxicity. These damages may vary depending upon the dose of amphotericin B used in experimental studies.
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