Key result
Exposure of isolated rat ventricular cardiomyocytes to 0.05% ethanol produced a 14.4% decrease in maximum myocyte shortening, while 0.30% ethanol reduced maximum shortening by 40.2%.
Why the study?
Does low-concentration ethanol exposure affect the contractility of isolated rat ventricular cardiomyocytes?
Population
Isolated rat ventricular cardiomyocytes
Comparison
Ethanol exposure at relatively low… vs Control conditions (implied)
Design
Preclinical
Authors
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Low-dose ethanol may impair rat cardiomyocyte contractility in vitro; hypothesis-generating for human effects, requiring in vivo validation.
Does low-concentration ethanol exposure affect the contractility of isolated rat ventricular cardiomyocytes?
Low concentrations of ethanol (0.05%) directly impair cardiomyocyte contractility, potentially through disturbance of sarcoplasmic reticulum function.
Delbridge et al. (2000) studied this question. Ethanol was evaluated on Maximum myocyte shortening. Exposure of isolated rat ventricular cardiomyocytes to 0.05% ethanol produced a 14.4% decrease in maximum myocyte shortening, while 0.30% ethanol reduced maximum shortening by 40.2%.
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