Why the study?
Does pressure overload differentially affect the mechanical properties of cardiac skinned fibers in rats compared to guinea pigs?
Population
Detergent-treated skinned fibers from rat and guinea pig hearts
Comparison
Pressure overload induced by abdominal aortic… vs Sham-operated animals
Design
Preclinical
Follow-up
4 weeks
Authors
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Species differences in cross-bridge slowing under pressure overload warrant caution extrapolating rodent data; leaves open human relevance and mechanisms.
Does pressure overload differentially affect the mechanical properties of cardiac skinned fibers in rats compared to guinea pigs?
Pressure overload induces species-specific adaptations in cardiac mechanics, with significant slowing of cross-bridge cycling in rats but not in guinea pigs.
Ventura‐Clapier et al. (1988) studied this question.
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