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Concomitant Accumulation of Intracellular Free Calcium and Arachidonic Acid in the Ischemic-reperfused Rat Heart

Overview
Publisher Springer
Specialty Biochemistry
Date 2002 Jan 5
PMID 11768232
Citations 5
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Abstract

This study was designed to elucidate the relationship between enhanced cytoplasmic calcium levels (Ca2+i) and membrane phospholipid degradation, a key step in the loss of cellular integrity during cardiac ischemia/reperfusion-induced damage. Isolated rat hearts were subjected to 15 min ischemia followed by 30 min reperfusion. Ca2+i was estimated by the Indo-1 fluorescence ratio technique. Degradation of membrane phospholipids as indicated by the increase of tissue arachidonic acid content was assessed in tissue samples taken from the myocardium at various points of the ischemia/reperfusion period. The hemodynamic parameters showed almost complete recovery during reperfusion. Fluorescence ratio increased significantly during ischemia, but showed a considerable heart-to-heart variation during reperfusion. Based upon the type of change of fluorescence ratio during reperfusion, the hearts were allotted to two separate subgroups. Normalization of fluorescence ratio was associated with low post-ischemic arachidonic acid levels. In contrast, elevated fluorescence ratio coincided with enhanced arachidonic acid levels. This observation is suggestive for a relationship between the Ca2+-related fluorescence ratio and arachidonic acid accumulation probably due to a calcium-mediated stimulation of phospholipase A2.

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References
1.
Ylitalo K, Liimatta E, Peuhkurinen K, Hassinen I . Intracellular free calcium and mitochondrial membrane potential in ischemia/reperfusion and preconditioning. J Mol Cell Cardiol. 2000; 32(7):1223-38. DOI: 10.1006/jmcc.2000.1157. View

2.
Stewart A . Muscle fluorometry: a determination of the depth of penetration. Experientia. 1985; 41(4):456-8. DOI: 10.1007/BF01966144. View

3.
Toth A, Ivanics T, Ruttner Z, Slaaf D, Reneman R, Ligeti L . Quantitative assessment of [Ca2+]i levels in rat skeletal muscle in vivo. Am J Physiol. 1998; 275(5):H1652-62. DOI: 10.1152/ajpheart.1998.275.5.H1652. View

4.
Elz J, NAYLER W . Contractile activity and reperfusion-induced calcium gain after ischemia in the isolated rat heart. Lab Invest. 1988; 58(6):653-9. View

5.
Damron D, Van Wagoner D, Moravec C, Bond M . Arachidonic acid and endothelin potentiate Ca2+ transients in rat cardiac myocytes via inhibition of distinct K+ channels. J Biol Chem. 1993; 268(36):27335-44. View