Effects of L-carnitine on mechanical recovery of isolated rat hearts in relation to the perfusion with glucose and palmitate.

作者: Heinz Lõster , Michael Punzel

DOI: 10.1023/A:1006891208220

关键词: EndocrinologyClinical chemistryFatty acidHemodynamicsCardiologyCarbohydrate metabolismCarnitinePerfusionVentricular pressureChemistryIschemiaInternal medicine

摘要: The purpose of this study was to investigate the effects L-carnitine on hemodynamic parameters Langendorff hearts. Isolated rat hearts were perfused with various solutions containing high or low concentrations fatty acids, additional glucose no glucose, and L-carnitine. most interesting part experiments behaviour in reperfusion period after no-flow ischemia 20 min. results were: (1) With acid showed an improved recovery left ventricular functions compared concentrations. Without pressure is much lower period. (2) Addition ischemically damaged This improvement especially impressive at addition but without strongly behaviour. (3) coronary flow increased by 2 experimental conditions: (i) perfusion levels carnitine (ii) acids glucose. These findings suggest that supplementation has a beneficial effect isolated heart under conditions, possibly specific human diseases.

参考文章(48)
Shug Al, Subramanian R, Plehn S, Noonan J, Schmidt M, Free radical-mediated damage during myocardial ischemia and reperfusion and protection by carnitine esters. Zeitschrift Fur Kardiologie. ,vol. 76, pp. 41- 45 ,(1987)
Jan Willem de Jong, R. Ferrari, The carnitine system : a new therapeutical approach to cardiovascular diseases Kluwer Academic Publishers. ,(1995)
S Di Mauro, W.G Sherwood, R. Ferrari, L-Carnitine and its role in medicine: from function to therapy Academic Press. ,(1992)
T.L. Broderick, H.A. Quinney, G.D. Lopaschuk, Carnitine Stimulation of Glucose Oxidation in the Fatty Acid Perfused Isolated Working Rat Heart Journal of Biological Chemistry. ,vol. 267, pp. 3758- 3763 ,(1992) , 10.1016/S0021-9258(19)50590-7
L W Grotyohann, J R Neely, J A Idell-Wenger, Coenzyme A and carnitine distribution in normal and ischemic hearts. Journal of Biological Chemistry. ,vol. 253, pp. 4310- 4318 ,(1978) , 10.1016/S0021-9258(17)34721-X
A. J. Liedtke, S. H. Nellis, L. F. Whitesell, C. Q. Mahar, Metabolic and mechanical effects using L- and D-carnitine in working swine hearts American Journal of Physiology-heart and Circulatory Physiology. ,vol. 243, ,(1982) , 10.1152/AJPHEART.1982.243.5.H691
G D Lopaschuk, R B Wambolt, R L Barr, An imbalance between glycolysis and glucose oxidation is a possible explanation for the detrimental effects of high levels of fatty acids during aerobic reperfusion of ischemic hearts. Journal of Pharmacology and Experimental Therapeutics. ,vol. 264, pp. 135- 144 ,(1993)
G. J. van der Vusse, J. F. Glatz, H. C. Stam, R. S. Reneman, Fatty acid homeostasis in the normoxic and ischemic heart. Physiological Reviews. ,vol. 72, pp. 881- 940 ,(1992) , 10.1152/PHYSREV.1992.72.4.881