Why the study?
Do various ion channel blockers alter action potential configuration in rabbit Purkinje fibers in a way indicative of proarrhythmic potential?
Population
Rabbit Purkinje fibers
Design
Preclinical
Authors
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Nonspecific antagonist effects may confound proarrhythmia readouts in Purkinje models; leaves open need for refined selectivity assays before clinical translation.
Do various ion channel blockers alter action potential configuration in rabbit Purkinje fibers in a way indicative of proarrhythmic potential?
Rabbit Purkinje fibers serve as an adequate in vitro model for evaluating the cardiac safety and proarrhythmic potential of newly developed drugs, revealing nonspecific effects of various ion channel blockers.
Dumotier et al. (1999) studied this question.
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