Key result
Fibroblast co-culture triggers cardiomyocyte hibernation-like dedifferentiation independent of hypoxia.
Why the study?
Little is known about the causal factors inducing structural changes accompanying cardiomyocyte dedifferentiation in chronic hibernating myocardium, and an in vitro model mimicking these changes would be helpful.
Population
Adult rabbit cardiomyocytes co-cultured with cardiac fibroblasts
Comparison
Cardiomyocytes co-cultured with fibroblasts vs baseline cardiomyocytes
Design
In vitro co-culture study with morphometry, electron microscopy, and immunocytochemical analysis
Authors
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Co-culture with fibroblasts induces hibernation-like dedifferentiation in vitro; leaves open causal pathways in chronic hibernating myocardium pending in vivo confirmation.
G Dispersyn (2001) studied Chronic hibernating myocardium. Co-culturing with cardiac fibroblasts was evaluated on Hibernation-like dedifferentiation (changes in ultrastructure and protein expression pattern of dedifferentiation markers). Co-culturing adult rabbit cardiomyocytes with cardiac fibroblasts induced hibernation-like dedifferentiation, suggesting these structural changes are not solely dependent on decreased oxygen availability.
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