Lipid and carbohydrate metabolism in the ischaemic heart

  • G. J. van der Vusse
  • H. Stam

Summary

Ischaemia has profound effects on myocardial metabolism and cell function in general. High energy phosphate and glycogen stores are depleted. Lactate, inorganic phosphate and hydrogen ions accumulate, exerting negative effects on the initially accelerated glycolytic flux. Fatty acid oxidation is inhibited. The cellular content of lipid intermediates, such as hydroxy-fatty acids, acyl CoA and acylcarnitine, increases in low-flow ischaemia hearts. Non-esterified fatty acid (NEFA) accumulation occurs after 30–60 min ischaemia. Endogenous triacylglycerol and phosphoglyceride turnover is most likely impaired, ultimately resulting in accumulation of lipid droplets in the oxygen deprived cells and in degradation of myocardial membranes. Accumulated lipid substances such as NEFA, acyl CoA, acylcarnitine and lysophosphoglycerides, are likeley to be involved in the mechanism underlying ischaemia-induced damage to myocardial cells.

Key words

Ischaemia myocardium carbohydrate metabolism fatty acid metabolism 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • G. J. van der Vusse
    • 1
    • 2
  • H. Stam
    • 3
  1. 1.Dept. of Physiology, Medical Faculty MaastrichtUniversity of LimburgThe Netherlands
  2. 2.Dept. of Physiology Biomedical Center University of LimburgMaastrichtThe Netherlands
  3. 3.Dept. of Biochemistry I, Medical Faculty RotterdamErasmus University RotterdamThe Netherlands

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