Key result
Inosine exerts a positive inotropic effect on canine myocardium that is approximately halved by beta-adrenergic blockade, suggesting a partially non-adrenergic mechanism.
Why the study?
Does inosine exert a positive inotropic effect via non-adrenergic mechanisms in canine myocardium?
Population
Canine myocardium models (intact dog hearts and dogs with chronic denervation of the heart)
Comparison
Inosine infusion vs Beta-adrenergic blockade with sotalol
Design
Preclinical
Authors
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Hypothesis-generating for non-adrenergic inotropy in canine models; leaves open any human therapeutic translation.
Does inosine exert a positive inotropic effect via non-adrenergic mechanisms in canine myocardium?
Inosine exerts a positive inotropic effect on canine myocardium that is partially non-adrenergic, potentially by blocking the desensitizing action of cyclic AMP.
Czarnecki et al. (1983) studied Canine myocardium. Inosine vs. Beta-adrenergic blockade with sotalol was evaluated on Positive inotropic effect. Inosine exerts a positive inotropic effect on canine myocardium that is approximately halved by beta-adrenergic blockade, suggesting a partially non-adrenergic mechanism.
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