Key result
Mechanical unloading of myocardial cells led to a 28% decrease in cardiocyte cross-sectional area and a 38% increase in connective tissue after three days.
Why the study?
Does mechanical unloading cause morphological changes in myocardial cells in cats?
Population
16 cats
Comparison
Mechanical unloading via transection of the… vs Adjacent intact papillary muscles
Design
Preclinical
Follow-up
1-28 days
Authors
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Rapid atrophy follows unloading in cats; hypothesis-generating for load dependence, leaves open human relevance.
Does mechanical unloading cause morphological changes in myocardial cells in cats?
Mechanical unloading of myocardial cells results in rapid and marked cellular degeneration, demonstrating the extreme dependence of cardiocytes on mechanical loading.
Tomanek et al. (1981) studied this question. Mechanical unloading of myocardial cells led to a 28% decrease in cardiocyte cross-sectional area and a 38% increase in connective tissue after three days.