• Can. J. Physiol. Pharmacol. · Feb 2009

    Review

    Transient receptor potential: a large family of new channels of which several are involved in cardiac arrhythmia.

    • Guy Vassort and Julio Alvarez.
    • INSERM U-637 Physiopathologie cardiovasculaire, CHU Arnaud de Villeneuve, Montpellier Cedex 05, 34295 France. guy.vassort@inserm.fr
    • Can. J. Physiol. Pharmacol. 2009 Feb 1;87(2):100-7.

    AbstractThe transient receptor potential (TRP) family of ion channels comprises more than 50 cation-permeable channels expressed throughout the animal kingdom. TRPs can be grouped into 7 main subfamilies according to structural homology: the TRPC (canonical), TRPV (vanilloid), TRPM (melastatin), TRPP (polycystin), TRPML (mucolipin), TRPA (ankyrin), and TRPN (NO mechanopotential). During the past 20 years, the cloning and characterization after reexpression of most members of these cation channels have led to a plethora of data and more recently to some understanding of their roles in various cells and tissues. Specifically in the heart, TRPs are known to be involved in various diseases, including hypertrophy, heart failure, and arrhythmia. The later part of this review focuses on the potential contribution of TRPs to cardiac rhythm and their potential proarrhythmic effects. Furthermore, several neurotransmitters that activate the formation of diacylglycerol could modulate cardiac rhythm or, like ATP, induce arrhythmia.

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