摘要
β-blockers have been recommended as a standard treatment for patients with mild to moderate systolic chronic heart failure （CHF） because they not only relieve patients＇ symptoms but also decrease mortality. However, β-blockers have a variety of effects on different CHF patients. Among them, β1-adrenergic receptor （AR） gene polymorphism is probably a significant one. The purpose of this study was to investigate the effects of metoprolol on cardiac function, cardiac geometrical size and density of β1-AR of CHF patients as well as the association between two common single nucleotide polymorphisms （SNPs） of β1-AR（Gly389Arg and Ser49Gly） and the effects of metoprolol.
β-blockers have been recommended as a standard treatment for patients with mild to moderate systolic chronic heart failure （CHF） because they not only relieve patients＇ symptoms but also decrease mortality. However, β-blockers have a variety of effects on different CHF patients. Among them, β1-adrenergic receptor （AR） gene polymorphism is probably a significant one. The purpose of this study was to investigate the effects of metoprolol on cardiac function, cardiac geometrical size and density of β1-AR of CHF patients as well as the association between two common single nucleotide polymorphisms （SNPs） of β1-AR（Gly389Arg and Ser49Gly） and the effects of metoprolol.
