Why the study?
Does sympathetic innervation modulate the alpha-adrenergic response on ventricular automaticity in neonatal and adult heart tissues?
Population
Isolated tissues from the hearts of neonatal and adult dogs and rats, and rat myocytes in tissue culture…
Comparison
alpha 1-Adrenergic stimulation and… vs Uninnervated myocytes vs innervated myocytes
Design
Preclinical
Authors
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Hypothesis-generating for sympathetic modulation of ventricular automaticity; leaves open human arrhythmogenic relevance.
Does sympathetic innervation modulate the alpha-adrenergic response on ventricular automaticity in neonatal and adult heart tissues?
Sympathetic innervation modulates cardiac rhythm via a GTP regulatory protein, suggesting that abnormal neuronal development may predispose to arrhythmogenesis.
Rosen et al. (1988) studied this question.