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Cardiac resynchronization therapy&miRNA

Yonathan F Melman, Ravi Shah, Kirsty Danielson, Junjie Xiao, Bridget Simonson, Andreas Barth, Khalid Chakir, Gregory D Lewis, Zachary Lavender, Quynh A Truong, Andre Kleber, Ranendra Das, Anthony Rosenzweig, Yaoyu Wang, David Kass, Jagmeet P Singh, Saumya Das
BACKGROUND: Biomarkers that predict response to cardiac resynchronization therapy (CRT) in heart failure patients with dyssynchrony (HFDYS) would be clinically important. Circulating extracellular microRNAs (miRNAs) have emerged as novel biomarkers that may also play important functional roles, but their relevance as markers for CRT response has not been examined. METHODS AND RESULTS: Comprehensive miRNA polymerase chain reaction arrays were used to assess baseline levels of 766 plasma miRNAs in patients undergoing clinically indicated CRT in an initial discovery set (n=12) with and without subsequent echocardiographic improvement at 6 months after CRT...
June 23, 2015: Circulation
Celestino Sardu, Raffaele Marfella, Gaetano Santulli, Giuseppe Paolisso
Heart failure (HF) disease progression is related to numerous adaptive processes including cardiac fibrosis, hypertrophy and apoptosis by activation of the 'fetal' gene program and downregulation of mRNA signatures, suggesting the importance of molecular mechanisms that suppress mRNA steady-state levels. miRNAs (miRs) are small, noncoding RNAs that bind mRNAs at their 3'-UTRs, leading to mRNA degradation or inhibition of protein translation. Several miRs are unregulated in response to cellular stress and can modify cellular functions such as proliferation, differentiation and programmed death; these miRs are also regulated in cardiac disease...
June 2014: Pharmacogenomics
Raffaele Marfella, Clara Di Filippo, Nicoletta Potenza, Celestino Sardu, Maria Rosaria Rizzo, Mario Siniscalchi, Emilio Musacchio, Michelangela Barbieri, Ciro Mauro, Nicola Mosca, Francesco Solimene, Maria Teresa Mottola, Aniello Russo, Francesco Rossi, Giuseppe Paolisso, Michele D'Amico
AIMS: MicroRNAs (miRNAs) play an important role in the pathogenesis of structural alterations of the failing heart through their ability to regulate negatively the expression levels of genes that govern the process of adaptive and maladaptive cardiac remodelling. We studied whether LV reverse remodelling after CRT was associated with changes of circulating miRNAs in patients with heart failure (HF) and dyssynchrony. METHODS AND RESULTS: A prospective, non-randomized self-control trial was performed in 81 patients with HF eligible for CRT...
November 2013: European Journal of Heart Failure
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