Why the study?
Molecular mechanisms underlying the progression from compensated eccentric hypertrophy to heart failure in chronic aortic regurgitation remain poorly understood.
Does chronic severe aortic regurgitation induce specific transcriptional changes in the left ventricle in a rat model?
Population
Male Wistar rats (n = 10 with AR, n = 8 controls)
Comparison
Induced severe aortic regurgitation vs age-matched controls
Design
Experimental animal study
Key result
Chronic aortic regurgitation induced by retrograde aortic valve perforation in rats resulted in marked left ventricular dilatation, systolic dysfunction, and coordinated transcriptional changes.
Authors
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Rat AR model identifies transcriptional targets in decompensated remodeling; leaves open translation to human AR management.
Does chronic severe aortic regurgitation induce specific transcriptional changes in the left ventricle in a rat model?
Chronic aortic regurgitation in a rat model induces coordinated transcriptional alterations across multiple pathways implicated in myocardial dysfunction, providing potential molecular targets for future research.
Oumeiri et al. (2026) studied Chronic aortic regurgitation (n=18). Retrograde aortic valve perforation (induced chronic aortic regurgitation) vs. Age-matched control rats was evaluated on Cardiac remodeling and myocardial gene-expression profiling. Chronic aortic regurgitation induced by retrograde aortic valve perforation in rats resulted in marked left ventricular dilatation, systolic dysfunction, and coordinated transcriptional changes.