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Cardiovasc Res. 2009 Feb 15;81(3):412-9. doi: 10.1093/cvr/cvn301. Epub 2008 Nov 5.

Energy metabolism in heart failure and remodelling.

Author information

  • 1NMR Laboratory for Physiological Chemistry, Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, 221 Longwood Avenue, Room 247, Boston, MA 02115, USA. jingwall@rics.bwh.harvard.edu

Abstract

Myocytes of the failing heart undergo impressive metabolic remodelling. The time line for changes in the pathways for ATP synthesis in compensated hypertrophy is: flux through the creatine kinase (CK) reaction falls as both creatine concentration ([Cr]) and CK activity fall; increases in [ADP] and [AMP] lead to increases in glucose uptake and utilization; fatty acid oxidation either remains the same or decreases. In uncompensated hypertrophy and in other forms of heart failure, CK flux and fatty acid oxidation are both lower; any increases in glucose uptake and utilization are not sufficient to compensate for overall decreases in the capacity for ATP supply and [ATP] falls. Metabolic remodelling is under transcriptional and post-transcriptional control. The lower metabolic reserve of the failing heart contributes to impaired contractile reserve.

PMID:
18987051
[PubMed - indexed for MEDLINE]
PMCID:
PMC2639129
Free PMC Article
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