Cited by 204Cardiovascular Function and Risk FactorsCardiomyopathy and Myosin StudiesMitochondrial Function and Pathology

The DOI matches its Crossref record; 53 of the 53 references it cites were found in a registry or an index.

Altered Creatine Kinase Adenosine Triphosphate Kinetics in Failing Hypertrophied Human Myocardium

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Abstract

Background— The progression of pressure-overload left ventricular hypertrophy (LVH) to chronic heart failure (CHF) may involve a relative deficit in energy supply and/or delivery. Methods and Results— We measured myocardial creatine kinase (CK) metabolite concentrations and adenosine triphosphate (ATP) synthesis through CK, the primary energy reserve of the heart, to test the hypothesis that ATP flux through CK is impaired in patients with LVH and CHF. Myocardial ATP levels were normal, but creatine phosphate levels were 35% lower in LVH patients (n=10) than in normal subjects (n=14, P <0.006). Left ventricular mass and CK metabolite levels in LVH were not different from those in patients with LVH and heart failure (LVH+CHF, n=10); however, the myocardial CK pseudo first-order rate constant was normal in LVH (0.36±0.04 s −1 in LVH versus 0.32±0.06 s −1 in normal subjects) but halved in LVH+CHF (0.17±0.06 s −1 , P <0.001). The net ATP flux through CK was significantly reduced by 30% in LVH (2.2±0.7 μmol · g −1 · s −1 , P =0.011) and by a dramatic 65% in LVH+CHF (1.1±0.4 μmol · g −1 · s −1 , P <0.001) compared with normal subjects (3.1±0.8 μmol · g −1 · s −1 ). Conclusions— These first observations in human LVH demonstrate that it is not the relative or absolute CK metabolite pool sizes but rather the kinetics of ATP turnover through CK that distinguish failing from nonfailing hypertrophic hearts. Moreover, the deficit in ATP kinetics is similar in systolic and nonsystolic heart failure and is not related to the severity of hypertrophy but to the presence of CHF. Because CK temporally buffers ATP, these observations support the hypothesis that a deficit in myofibrillar energy delivery contributes to CHF pathophysiology in human LVH.

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Crossref · 10.1161/circulationaha.106.613646

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  1. 10.1161/circ.91.6.1814 · DOI
  2. 10.1161/circ.103.11.1570 · DOI
  3. 10.1161/circ.99.17.2261 · DOI
  4. 10.1161/circ.86.6.1451253 · DOI
  5. 10.1161/res.60.6.2954720 · DOI
  6. 10.1161/res.67.6.2147129 · DOI
  7. 10.1161/circ.92.1.15 · DOI
  8. 10.1161/circ.100.24.2425 · DOI
  9. 10.1161/circ.97.25.2536 · DOI
  10. 10.1161/circ.104.15.1844 · DOI
  11. 10.1161/res.89.2.153 · DOI
  12. 10.1161/circ.44.2.181 · DOI
  13. 10.1161/res.14.4.294 · DOI

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Metadata

Authors
Smith, C. S., Bottomley, P. A., Schulman, S. P., Gerstenblith, G., & Weiss, R. G.
Affiliations
Johns Hopkins University (US)
Venue
Circulation
Published
2006-09-12
Volume
114
Issue
11
Pages
1151-1158
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W2111571221
Cited by
204
References
53
Citations by year
2026: 4 · 2025: 8 · 2024: 8 · 2023: 8 · 2022: 8 · 2021: 6 · 2020: 12 · 2019: 13 · 2018: 8 · 2017: 11 · 2016: 11 · 2015: 12 · 2014: 11 · 2013: 13 · 2012: 9
FWCI
7.82
Type
journal article
Language
en
Open access
Locations
  • Circulation (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Donald W. Reynolds Foundation
  • National Heart, Lung, and Blood Institute (HL61912, HL-63030, R01HL063030, R01HL061912, R01HL056882, HL56882)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Function and Risk Factors
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiomyopathy and Myosin Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
creatine kinase, adenosine triphosphate, left ventricular hypertrophy, chronic heart failure, myocardial energy metabolism, phosphocreatine, ATP turnover, pressure overload, heart failure pathophysiology
MeSH terms
Adenosine Triphosphate, Adult, Aged, Cardiac Output, Low, Creatine Kinase, Energy Metabolism, Female, Heart, Heart Ventricles, Humans, Male, Middle Aged, Myocardium, Severity of Illness Index, Hypertrophy, Left Ventricular, Disease Progression

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