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Circulation. 2021 Feb 23;143(8):805-820. doi: 10.1161/CIRCULATIONAHA.120.048121. Epub 2020 Nov 23.

Cardiac Pressure Overload Decreases ETV1 Expression in the Left Atrium, Contributing to Atrial Electrical and Structural Remodeling.

Circulation

Naoko Yamaguchi, Junhua Xiao, Deven Narke, Devin Shaheen, Xianming Lin, Erik Offerman, Alireza Khodadadi-Jamayran, Akshay Shekhar, Alex Choy, Sojin Y Wass, David R Van Wagoner, Mina K Chung, David S Park

Affiliations

  1. The Leon H. Charney Division of Cardiology (N.Y., J.X., D.N., D.S., X.L., E.O., A.S., D.S.P.), New York University Grossman School of Medicine.
  2. NYU Applied Bioinformatics Labs (A.K.-J.), New York University Grossman School of Medicine.
  3. Regeneron Pharmaceuticals Inc, Biotechnology, Tarrytown, NY (A.S.).
  4. Icahn Medical Institute at Mount Sinai, New York (A.C.).
  5. Department of Cardiovascular & Metabolic Sciences, Department of Cardiovascular Medicine, Cleveland Clinic, OH (S.Y.W., D.R.V.W., M.K.C.).

PMID: 33225722 PMCID: PMC8449308 DOI: 10.1161/CIRCULATIONAHA.120.048121

Abstract

BACKGROUND: Elevated intracardiac pressure attributable to heart failure induces electrical and structural remodeling in the left atrium (LA) that begets atrial myopathy and arrhythmias. The underlying molecular pathways that drive atrial remodeling during cardiac pressure overload are poorly defined. The purpose of this study is to characterize the response of the ETV1 (ETS translocation variant 1) signaling axis in the LA during cardiac pressure overload in humans and mouse models and explore the role of ETV1 in atrial electrical and structural remodeling.

METHODS: We performed gene expression profiling in 265 left atrial samples from patients who underwent cardiac surgery. Comparative gene expression profiling was performed between 2 murine models of cardiac pressure overload, transverse aortic constriction banding and angiotensin II infusion, and a genetic model of

RESULTS: Using the Cleveland Clinic biobank of human LA specimens, we found that

CONCLUSIONS: ETV1 is downregulated in the LA during cardiac pressure overload, contributing to both electrical and structural remodeling.

Keywords: atrial fibrillation; atrial remodeling; heart failure; signal transduction; transcription factors

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