کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2192164 1097885 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Potassium channel remodeling in cardiac hypertrophy
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیولوژی سلول
پیش نمایش صفحه اول مقاله
Potassium channel remodeling in cardiac hypertrophy
چکیده انگلیسی

Cardiac hypertrophy is an adaptive process against increased work loads; however, hypertrophy also presents substrates for lethal ventricular arrhythmias, resulting in sudden arrhythmic deaths that account for about one third of deaths in cardiac hypertrophy. To maintain physiological cardiac function in the face of increased work loads, hypertrophied cardiomyocytes undergo K+ channel remodeling that provides a prolongation in action potential duration and an increase in Ca2+ entry. Increased Ca2+ entry, in turn, activates signaling mechanisms including a calcineruin/NFAT pathway to permit remodeling of the K+ channels. This results in a positive feedback loop between the K+ channel remodeling and altered Ca2+ handling; this loop may represent a potential therapeutic target against sudden arrhythmic deaths in cardiac hypertrophy. The purposes of this review are to: (1) discuss types of K+ channels and their mRNA that undergo remodeling in cardiac hypertrophy; (2) report on recent research on molecular mechanisms of K+ channel remodeling; and (3) address physiological events underlying new therapeutic modalities to ameliorate arrhythmias and sudden death in cardiac hypertrophy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular and Cellular Cardiology - Volume 41, Issue 5, November 2006, Pages 753–761
نویسندگان
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