Do endogenous lipoproteins modulate the sensibility of animals against arrhythmogenic drugs?

The present study suggests that a diminished level of HDL is connected with an enhanced susceptibility to arrhythmogenic stimuli only in rats pretreated with a diet deficient in polyunsaturated fatty acids (PUFA), but not after a PUFA-rich or pellet diet. The endogenous level of total cholesterol did not influence the thresholds for ventricular flutter or ventricular fibrillation in aconitine-induced arrhythmia in rats or in ouabain-induced arrhythmia in guinea pigs.