Document Detail


Mitochondrial reprogramming through cardiac oxygen sensors in ischaemic heart disease.
MedLine Citation:
PMID:  20679415     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Under hypoxic conditions, mitochondria can represent a threat to the cell because of their capacity to generate toxic reactive oxygen species (ROS). However, cardiomyocytes are equipped with an oxygen-sensing pathway that involves prolyl hydroxylase oxygen sensors and hypoxia-inducible factors (HIFs), which induces a tightly regulated programme to keep ischaemic mitochondrial activity under control. The aim of this review is to provide an update on the pathways leading to mitochondrial reprogramming, which occurs in the myocardium during ischaemia, with particular emphasis on those induced by HIF activation. We start by studying the mechanisms of mitochondrial damage during ischaemia and upon reperfusion, highlighting the importance of the formation of the mitochondrial permeability transition pore during reperfusion and its consequences for cardiomyocyte survival. Next, we analyse hypoxia-induced metabolic reprogramming through HIF and its important consequences for mitochondrial bioenergetics, as well as the phenomenon known as the hibernating myocardium. Subsequently, we examine the mechanisms underlying ischaemic preconditioning, focusing, in particular, on those that involve the HIF pathway, such as adenosine signalling, sub-lethal ROS generation, and nitric oxide production. Finally, the role of the mitochondrial uncoupling proteins in ischaemia tolerance is discussed.
Authors:
Susana Cadenas; Julián Aragonés; Manuel O Landázuri
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review     Date:  2010-08-02
Journal Detail:
Title:  Cardiovascular research     Volume:  88     ISSN:  1755-3245     ISO Abbreviation:  Cardiovasc. Res.     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-12     Completed Date:  2011-01-26     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0077427     Medline TA:  Cardiovasc Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  219-28     Citation Subset:  IM    
Affiliation:
Servicio de Inmunología, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa , Diego de León 62, 28006 Madrid, Spain. susana.cadenas@salud.madrid.org
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MeSH Terms
Descriptor/Qualifier:
Animals
Cell Hypoxia
Humans
Hypoxia-Inducible Factor 1 / metabolism
Ion Channels / metabolism
Ischemic Preconditioning, Myocardial*
Mitochondria, Heart / metabolism*,  pathology
Mitochondrial Proteins / metabolism
Myocardial Ischemia / metabolism,  pathology,  therapy*
Myocardial Reperfusion Injury / metabolism,  pathology,  prevention & control*
Myocardium / metabolism*,  pathology
Oxygen / metabolism*
Procollagen-Proline Dioxygenase / metabolism
Signal Transduction
Chemical
Reg. No./Substance:
0/Hypoxia-Inducible Factor 1; 0/Ion Channels; 0/Mitochondrial Proteins; 0/mitochondrial uncoupling protein; 7782-44-7/Oxygen; EC 1.14.11.2/Procollagen-Proline Dioxygenase

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