Alcohol and Alcoholism Vol. 38, No. 1, pp. 18-24, 2003
© 2003 Medical Council on Alcohol
CHRONIC ETHANOL CONSUMPTION MODULATES MYOCARDIAL ISCHAEMIAREPERFUSION INJURY IN MURINE AIDS
1 Division of Health Promotion Science, College of Public Health and
2 Cardiovascular and Thoracic Surgery and The Sarver Heart Center, School of Medicine, University of Arizona, Tucson, AZ 85724, USA
Received 23 November 2001; first review notified 17 July 2002; accepted 30 July 2002
Aims: The severity of cardiovascular complications in acquired immune deficiency syndrome (AIDS) patients may be associated with acute ischaemiareperfusion injury. Epidemiological studies suggest that moderate ethanol consumption has myocardial protective effects. However, it is unknown if chronic ethanol consumption benefits acute myocardial ischaemiareperfusion injury in AIDS. The aim of this study was to determine if chronic ethanol consumption modulates myocardial ischaemiareperfusion injury in murine AIDS. Methods: Four groups were studied: control, murine AIDS, ethanol, and ethanol plus murine AIDS. All mice were subjected to 30 min of left anterior descending branch (LAD) occlusion and 120 min of reperfusion. Results: We found that the survival from an acute myocardial infarction was reduced in advanced-stage murine AIDS mice. Although early-stage murine AIDS hearts did survive in acute myocardial infarction, the infarct size was significantly larger. Chronic ethanol consumption significantly decreased infarct size compared to the control group. Chronic ethanol consumption also improved the survival of murine AIDS mice from an acute myocardial infarction. However, chronic ethanol consumption did not significantly reduce infarct size in murine AIDS. Conclusions: Our results indicate that multiple deleterious effects may enhance acute ischaemiareperfusion injury in murine AIDS. The beneficial effects of chronic ethanol consumption in myocardial ischaemiareperfusion injury may be due to modulation of neutrophil adhesion molecule expression and cytokine secretion.
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