Key result
Enalapril attenuated left ventricular remodeling and restored baseline papillary muscle tension in rats with myocardial infarction, but did not improve cardiac sympathetic neuronal function or beta-adrenergic responsiveness.
Why the study?
Does enalapril improve sympathetic neuronal function and beta-adrenergic desensitization in rats with heart failure after myocardial infarction?
Does enalapril improve sympathetic neuronal function and beta-adrenergic desensitization in rats with heart failure after myocardial infarction?
In a rat model of post-MI heart failure, enalapril attenuates LV remodeling and improves baseline contractility, but these benefits are not mediated by sympathoinhibition or restoration of beta-adrenergic signaling.
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Hypothesis-generating in post-MI rats; leaves open whether ACEI remodeling benefits require sympathetic or beta-adrenergic restoration for clinical translation.
Igawa et al. (2002) studied Heart failure after myocardial infarction (n=80). Enalapril vs. Untreated was evaluated on Left ventricular remodeling, sympathetic neuronal function, and beta-adrenergic desensitization. Enalapril attenuated left ventricular remodeling and restored baseline papillary muscle tension in rats with myocardial infarction, but did not improve cardiac sympathetic neuronal function or beta-adrenergic responsiveness.