RT Journal Article T1 The Role of MicroRNAs in Dilated Cardiomyopathy: New Insights for an Old Entity. A1 Alonso-Villa, Elena A1 Bonet, Fernando A1 Hernandez-Torres, Francisco A1 Campuzano, Oscar A1 Sarquella-Brugada, Georgia A1 Quezada-Feijoo, Maribel A1 Ramos, Monica A1 Mangas, Alipio A1 Toro, Rocio K1 Apoptosis K1 Autophagia K1 Dilated cardiomyopathy K1 Etiology K1 Fibrosis K1 Inflammation K1 MicroRNA K1 Molecular pathways K1 Oxidative stress K1 Reticulum endoplasmic stress AB Dilated cardiomyopathy (DCM) is a clinical diagnosis characterized by left ventricular or biventricular dilation and systolic dysfunction. In most cases, DCM is progressive, leading to heart failure (HF) and death. This cardiomyopathy has been considered a common and final phenotype of several entities. DCM occurs when cellular pathways fail to maintain the pumping function. The etiology of this disease encompasses several factors, such as ischemia, infection, autoimmunity, drugs or genetic susceptibility. Although the prognosis has improved in the last few years due to red flag clinical follow-up, early familial diagnosis and ongoing optimization of treatment, due to its heterogeneity, there are no targeted therapies available for DCM based on each etiology. Therefore, a better understanding of the mechanisms underlying the pathophysiology of DCM will provide novel therapeutic strategies against this cardiac disease and their different triggers. MicroRNAs (miRNAs) are a group of small noncoding RNAs that play key roles in post-transcriptional gene silencing by targeting mRNAs for translational repression or, to a lesser extent, degradation. A growing number of studies have demonstrated critical functions of miRNAs in cardiovascular diseases (CVDs), including DCM, by regulating mechanisms that contribute to the progression of the disease. Herein, we summarize the role of miRNAs in inflammation, endoplasmic reticulum (ER) stress, oxidative stress, mitochondrial dysfunction, autophagy, cardiomyocyte apoptosis and fibrosis, exclusively in the context of DCM. PB MDPI YR 2022 FD 2022-11-03 LK http://hdl.handle.net/10668/21213 UL http://hdl.handle.net/10668/21213 LA en NO Alonso-Villa E, Bonet F, Hernandez-Torres F, Campuzano Ó, Sarquella-Brugada G, Quezada-Feijoo M, et a. The Role of MicroRNAs in Dilated Cardiomyopathy: New Insights for an Old Entity. Int J Mol Sci. 2022 Nov 5;23(21):13573 DS RISalud RD Apr 11, 2025