Heart failure and greater infarct expansion in middle-aged mice: A relevant model for postinfarction failure

Kenneth E. Gould, George E. Taffet, Lloyd H. Michael, Robert M. Christie, Debra L. Konkol, Jennifer S. Pocius, Justin P. Zachariah, Damian F. Chaupin, Sherita L. Daniel, George Sandusky, Craig J. Hartley, Mark L. Entman

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Young mice tolerate myocardial loss after coronary artery ligation (CAL) without congestive heart failure (CHF) signs or mortality. We predicted a CHF phenotype after CAL in aged mice. Left coronary artery ligation produced permanent myocardial infarcts (MI). Mortality was higher in male 14-mo-old C57BL/6N mice (Older mice) than in 2-mo-old mice (Young mice) (16 of 25 Older mice died vs. 0 of 10 Young mice, P <0.02). After 8 wk, rales, weight loss, and lethargy preceded deaths. Captopril (50 mg·kg-1·day-1) increased Older mouse survival (6 of 22 died, P <0.02). Captopril improved systolic function (peak aortic blood velocity) from 76 ± 6% of baseline in untreated Older mice to 93 ± 8% (P <0.036). At 24 h, MI comprised 28 ± 4% of the left ventricle in Young mice, surprisingly larger than that in Older mice (18 ± 2%, P <0.011). Endocardial area underlying the infarct scar was significantly larger in Older mice than in Young mice. Captopril did not reduce expansion but markedly reduced septal hypertrophy. Aging reduces compensatory ability in mice despite smaller acute infarcts. Less effective myocardial repair, greater infarct expansion, and septal hypertrophy are seen with aging. Aging is a more relevant murine model of post-MI heart failure in patients.

Original languageEnglish (US)
JournalAmerican Journal of Physiology - Heart and Circulatory Physiology
Volume282
Issue number2 51-2
StatePublished - 2002
Externally publishedYes

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Heart Failure
Inbred C57BL Mouse
Captopril
Ligation
Coronary Vessels
Myocardial Infarction
Hypertrophy
Lethargy
Aptitude
Mortality
Respiratory Sounds
Heart Ventricles
Cicatrix
Weight Loss
Phenotype

Keywords

  • Aging
  • Heart failure
  • Mouse
  • Myocardial infarction

ASJC Scopus subject areas

  • Physiology

Cite this

Gould, K. E., Taffet, G. E., Michael, L. H., Christie, R. M., Konkol, D. L., Pocius, J. S., ... Entman, M. L. (2002). Heart failure and greater infarct expansion in middle-aged mice: A relevant model for postinfarction failure. American Journal of Physiology - Heart and Circulatory Physiology, 282(2 51-2).

Heart failure and greater infarct expansion in middle-aged mice : A relevant model for postinfarction failure. / Gould, Kenneth E.; Taffet, George E.; Michael, Lloyd H.; Christie, Robert M.; Konkol, Debra L.; Pocius, Jennifer S.; Zachariah, Justin P.; Chaupin, Damian F.; Daniel, Sherita L.; Sandusky, George; Hartley, Craig J.; Entman, Mark L.

In: American Journal of Physiology - Heart and Circulatory Physiology, Vol. 282, No. 2 51-2, 2002.

Research output: Contribution to journalArticle

Gould, KE, Taffet, GE, Michael, LH, Christie, RM, Konkol, DL, Pocius, JS, Zachariah, JP, Chaupin, DF, Daniel, SL, Sandusky, G, Hartley, CJ & Entman, ML 2002, 'Heart failure and greater infarct expansion in middle-aged mice: A relevant model for postinfarction failure', American Journal of Physiology - Heart and Circulatory Physiology, vol. 282, no. 2 51-2.
Gould, Kenneth E. ; Taffet, George E. ; Michael, Lloyd H. ; Christie, Robert M. ; Konkol, Debra L. ; Pocius, Jennifer S. ; Zachariah, Justin P. ; Chaupin, Damian F. ; Daniel, Sherita L. ; Sandusky, George ; Hartley, Craig J. ; Entman, Mark L. / Heart failure and greater infarct expansion in middle-aged mice : A relevant model for postinfarction failure. In: American Journal of Physiology - Heart and Circulatory Physiology. 2002 ; Vol. 282, No. 2 51-2.
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