Effects of cyclooxygenase and lipoxygenase inhibitors on digoxin-induced arrhythmias and haemodynamics in guinea-pigs

Pharmacological Research : the Official Journal of the Italian Pharmacological Society
I KanzikH Zengil


Effects of cyclooxygenase and lipoxygenase inhibitors of digoxin-induced arrhythmias and haemodynamics were studied in guinea-pigs. ECG, mean arterial blood pressure heart rate, pressure rate index and arrhythmias were recorded, starting 15 min before digoxin administration and continuing for 30 min afterwards. The cyclooxygenase inhibitor aspirin (50 mg kg-1) and the dual cyclooxygenase/lipoxygenase inhibitor BW 755C (0.25-10.0 mg kg-1) were found to produce a significant protection against the arrhythmias, whereas aspirin (100 mg kg-1) and CGS 8515 were found to be ineffective. SK&F 104 353, a potent and selective peptidoleukotriene receptor antagonist significantly attenuated the arrhythmias and mortality in a dose-dependent manner. It is concluded that production of both cyclooxygenase and lipoxygenase metabolites could favour the occurrence and/or the maintenance of digoxin-induced cardiac toxicity.


Sep 26, 2012·Chronobiology International·Diana E AyalaRamón C Hermida
Oct 20, 2012·Chronobiology International·Ramón C HermidaFrancesco Portaluppi
May 2, 2009·American Journal of Hypertension·Ramón C HermidaJosé R Fernández
Mar 11, 2005·Autonomic & Autacoid Pharmacology·A T Demiryürek, S Demiryürek
Sep 21, 2018·Journal of Human Hypertension·Renuka ShanmugalingamAngela Makris
Feb 12, 1999·Pharmacology & Toxicology·S AltuğI Kanzik

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