Why the study?
Does gonadal status affect survival and cardiomyopathic phenotype in mice with cardiac beta(2)-adrenergic receptor overexpression?
Population
Mice with cardiac overexpression of beta(2)-adrenergic receptors (TG) and wild-type mice, aged 6-15 months.
Comparison
Castration in males during 3-15 months of age… vs Intact TG males and females; wild-type mice.
Design
Preclinical
Follow-up
up to 15 months of age
Authors
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Hypothesis-generating for gonadal hormone effects in cardiomyopathy; leaves open translation to human heart failure.
Does gonadal status affect survival and cardiomyopathic phenotype in mice with cardiac beta(2)-adrenergic receptor overexpression?
In a mouse model of beta(2)-adrenergic receptor overexpression, female mice have a survival advantage and less cardiac remodeling than males, and testicular hormones contribute to the progression of the cardiomyopathic phenotype in males.
Gao et al. (2003) studied this question.
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