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Biochemistry Research International
Volume 2012, Article ID 583170, 7 pages
http://dx.doi.org/10.1155/2012/583170
Review Article

The Myocardial Unfolded Protein Response during Ischemic Cardiovascular Disease

Department of Pathology and Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, 300 East Superior Street, Tarry Building 3-705, Chicago, IL 60611, USA

Received 6 December 2011; Accepted 10 January 2012

Academic Editor: Huiping Zhou

Copyright © 2012 Edward B. Thorp. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Heart failure is a progressive and disabling disease. The incidence of heart failure is also on the rise, particularly in the elderly of industrialized societies. This is in part due to an increased ageing population, whom initially benefits from improved, and life-extending cardiovascular therapy, yet ultimately succumb to myocardial failure. A major cause of heart failure is ischemia secondary to the sequence of events that is dyslipidemia, atherosclerosis, and myocardial infarction. In the case of heart failure postmyocardial infarction, ischemia can lead to myocardial cell death by both necrosis and apoptosis. The extent of myocyte death postinfarction is associated with adverse cardiac remodeling that can contribute to progressive heart chamber dilation, ventricular wall thinning, and the onset of loss of cardiac function. In cardiomyocytes, recent studies indicate that myocardial ischemic injury activates the unfolded protein stress response (UPR) and this is associated with increased apoptosis. This paper focuses on the intersection of ischemia, the UPR, and cell death in cardiomyocytes. Targeting of the myocardial UPR may prove to be a viable target for the prevention of myocyte cell loss and the progression of heart failure due to ischemic injury.