Why the study?
Does beta-1 or beta-2 receptor activation induce abnormal calcium cycling and arrhythmias in the German shepherd sudden death model?
Population
German shepherd dogs that develop lethal arrhythmias at ~5 months of age (afflicted) and control dogs
Comparison
Beta-1 and beta-2 receptor agonists vs Control dogs
Design
Preclinical
Authors
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Beta-1 driven arrhythmogenesis in this canine model; hypothesis-generating for selective interventions in human sudden death syndromes.
Does beta-1 or beta-2 receptor activation induce abnormal calcium cycling and arrhythmias in the German shepherd sudden death model?
Arrhythmogenesis in the German shepherd sudden death model is driven by beta-1 receptor activation of the cAMP-dependent pathway, rather than beta-2 receptors.
Steinberg et al. (2002) studied this question.
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