Why the study?
Does volume-overload hypertrophy and circulatory congestion alter myocardial beta-adrenergic receptor expression and signal transduction in a pig model?
Population
16 pigs
Comparison
Volume-overload hypertrophy induced by… vs Normal animals
Design
Preclinical
Follow-up
5 weeks
Authors
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Volume overload downregulates beta-receptors in pigs; hypothesis-generating for adrenergic changes in congestion and leaves open human translation.
Does volume-overload hypertrophy and circulatory congestion alter myocardial beta-adrenergic receptor expression and signal transduction in a pig model?
Circulatory congestion and volume overload alone, without intrinsic contractile dysfunction, are sufficient to induce catecholamine-driven beta-adrenergic receptor pathway desensitization and downregulation.
Hammond et al. (1992) studied this question.
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