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- W2967990025 endingPage "3986" @default.
- W2967990025 startingPage "3986" @default.
- W2967990025 abstract "Arrhythmogenic cardiomyopathy (ACM) is an inherited heart disease characterized by sudden death in young people and featured by fibro-adipose myocardium replacement, malignant arrhythmias, and heart failure. To date, no etiological therapies are available. Mutations in desmosomal genes cause abnormal mechanical coupling, trigger pro-apoptotic signaling pathways, and induce fibro-adipose replacement. Here, we discuss the hypothesis that the ACM causative mechanism involves a defect in the expression and/or activity of the cardiac Ca2+ handling machinery, focusing on the available data supporting this hypothesis. The Ca2+ toolkit is heavily remodeled in cardiomyocytes derived from a mouse model of ACM defective of the desmosomal protein plakophilin-2. Furthermore, ACM-related mutations were found in genes encoding for proteins involved in excitation‒contraction coupling, e.g., type 2 ryanodine receptor and phospholamban. As a consequence, the sarcoplasmic reticulum becomes more eager to release Ca2+, thereby inducing delayed afterdepolarizations and impairing cardiac contractility. These data are supported by preliminary observations from patient induced pluripotent stem-cell-derived cardiomyocytes. Assessing the involvement of Ca2+ signaling in the pathogenesis of ACM could be beneficial in the treatment of this life-threatening disease." @default.
- W2967990025 created "2019-08-22" @default.
- W2967990025 creator A5007844193 @default.
- W2967990025 creator A5020018770 @default.
- W2967990025 creator A5026120374 @default.
- W2967990025 creator A5054108961 @default.
- W2967990025 creator A5061735743 @default.
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- W2967990025 creator A5066606481 @default.
- W2967990025 creator A5071101207 @default.
- W2967990025 creator A5072246978 @default.
- W2967990025 date "2019-08-16" @default.
- W2967990025 modified "2023-10-16" @default.
- W2967990025 title "Calcium as a Key Player in Arrhythmogenic Cardiomyopathy: Adhesion Disorder or Intracellular Alteration?" @default.
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