The effect of furosemide on calcium ion concentration in myocardial cells

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Abstract

The effect of furosemide and ouabain on the intracellular concentration of Ca2+ was studied in myocardial cell cultures using Fura-2, a fluorescent agent, as an intracellular Ca2+ indicator. Introduction of 200μM ouabain to the cultured cells increased the intracellular calcium concentration from an average of 236 nM up to an average of 833 nM. Introduction of 100μM furosemide, prior to the administration of ouabain, decreased the ouabain induced Ca2+ elevation to an average of only 473 nM. Introduction of 2.5 mM EGTA prior to the administration of ouabain abolished the ouabain induced Ca2+ increase.

Original languageEnglish
Pages (from-to)135-139
Number of pages5
JournalCell Calcium
Volume18
Issue number2
DOIs
StatePublished - Aug 1995

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