Abstract
To the Editor: We read with great interest the article by Lopez et al,1 who hypothesize that cardiotrophin-1 (CT-1), a cytokine that induces cardiomyocyte growth, may be abnormally upregulated in hypertensive patients with inappropriate left ventricular mass (LVM), suggesting that an excess of CT-1 may contribute to inappropriate left ventricular growth. This possibility is supported by the finding of a correlation between CT-1 levels and the observed LVM/predicted LVM ratio, independent from concentric left ventricular hypertrophy (LVH). de Simone et al2 suggested that, other than hemodynamic load, the process that yields to inappropriate LVH can also depend on the protracted activity over time of cytokines, among other nonhemodynamic factors. The observation by Lopez et al1 that CT-1 levels were high in treated patients in whom inappropriate LVM persisted …
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