Effects of excess salt and fat intake on myocardial function and infarct size in rat

Mahmood S Mozaffari, Champa Patel, Claudia Ballas, Stephen W. Schaffer

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Important risk factors for cardiovascular disease include excess dietary intake of saturated fat and (or) salt. This study tested the hypothesis that excess intakes of saturated fat (e.g., beef tallow) and salt cause greater myocardial cell death following ischemia-reperfusion injury than each risk factor alone. Male rats were divided into four groups: basal fat diet (4.5% as calories; control), high fat diet (40% as calories; FAT), basal fat diet and high salt (1% NaCl solution; SALT) and high fat diet and high salt (FATSALT). The gain in body weight was significantly higher for FAT and FATSALT groups than those of either the control or the SALT group. Five weeks of exposure to the dietary regimens did not significantly affect the coronary flow rate and except for the salt-fed group, had no effect on the rate-pressure-product of the isolated heart perfused in Langendorff mode. Although infarct size was not affected by the high fat diet, it was reduced by the high salt regimen relative to the high fat diet or the control groups. When rats were fed the FAT and SALT combination, the effect of salt feeding on infarct size was not observed. In addition, the FATSALT group displayed a more marked deterioration in contractile function following ischemia-reperfusion injury than the other groups. In conclusion, short-term intake of a high fat diet, which significantly increases body weight, does not worsen ischemia-reperfusion injury although the treatment prevents the reduction of infarct size associated with high salt feeding.

Original languageEnglish (US)
Pages (from-to)1808-1813
Number of pages6
JournalLife sciences
Volume78
Issue number16
DOIs
StatePublished - Mar 13 2006

Fingerprint

Rats
High Fat Diet
Nutrition
Salts
Fats
Myocardial Infarction
Reperfusion Injury
Body Weight
Cell death
Deterioration
Cell Death
Cardiovascular Diseases
Diet
Flow rate
Pressure
Control Groups

Keywords

  • Contractility
  • Diet
  • Heart
  • Infarct size
  • NaCl
  • Saturated fat

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

Cite this

Effects of excess salt and fat intake on myocardial function and infarct size in rat. / Mozaffari, Mahmood S; Patel, Champa; Ballas, Claudia; Schaffer, Stephen W.

In: Life sciences, Vol. 78, No. 16, 13.03.2006, p. 1808-1813.

Research output: Contribution to journalArticle

Mozaffari, Mahmood S ; Patel, Champa ; Ballas, Claudia ; Schaffer, Stephen W. / Effects of excess salt and fat intake on myocardial function and infarct size in rat. In: Life sciences. 2006 ; Vol. 78, No. 16. pp. 1808-1813.
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