Beneficial effects of carbon monoxide-releasing molecules on post-ischemic myocardial recovery

Judit Varadi, Istvan Lekli, Bela Juhasz, Ildiko Bacskay, Gergo Szabo, Rudolf Gesztelyi, Levente Szendrei, Edit Varga, Istvan Bak, Roberta Foresti, Roberto Motterlini, Arpad Tosaki

Research output: Article

39 Citations (Scopus)


There is increasing evidence corroborating a protective role of carbon monoxide releasing molecules (CORMs) in injured tissues. Carbon monoxide (CO) carriers have been recently developed as a pharmacological tool to simulate the effect of heme oxygenase-1-derived CO. The effects of CORM-3, a water-soluble CO releaser, on the incidence of reperfusion-induced ventricular fibrillation (VF) and tachycardia (VT) were studied in isolated rat hearts. Hearts were treated with different doses of CORM-3 before the induction of 30 min global ischemia followed by 120 min reperfusion. We found that at concentrations of 25 μM and 50 μM of CORM-3 promoted a significant reduction in the incidence of VF and VT. Thus, the incidence of VF was reduced by 67% (p < 0.05) and 92% (p < 0.05) with 25 μM and 50 μM of CORM-3, respectively. The protective effect of CORM-3 on the incidence of VT followed the same pattern. The antiarrhythmic protection was associated with a marked attenuation in infarct size, significant decreases in cellular Na+ and Ca2+ gains and K+ loss. Consequently, the recovery of post-ischemic function was significantly improved. In conclusion, CORM-3 exerts beneficial effects against ischemia/reperfusion-induced injury through its abilities to release CO which mediates a cardioprotective action by regulating tissue Na+, K+, and Ca2+ levels.

Original languageEnglish
Pages (from-to)1619-1626
Number of pages8
JournalLife sciences
Issue number17
Publication statusPublished - ápr. 3 2007

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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