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Ethanol modulates coronary permeability to macromolecules in murine AIDS
Yinhong Chen1, Grace Davis-Gorman, Ronald R Watson
1Divison of Health Prevention Science, College of Public Health, School of Medicine, University of Arizona, Tucson, AZ 85724, USA.
Alcohol and Alcoholism (Oxford, Oxfordshire)
|November 5, 2002
Summary
Murine AIDS impairs coronary endothelium integrity. However, moderate ethanol consumption improved coronary hemodynamics in these mice, suggesting a modulatory effect on microcirculation function.
Area of Science:
- Cardiovascular Science
- Immunology
- Pharmacology
Background:
- Cardiovascular complications of Acquired Immunodeficiency Syndrome (AIDS) are significant but poorly understood.
- The impact of ethanol on coronary microcirculation in AIDS patients remains unclear.
Purpose of the Study:
- To investigate the integrity of the coronary microcirculation in a murine model of AIDS.
- To determine the effects of chronic ethanol consumption on coronary microcirculation in the context of murine AIDS.
Main Methods:
- Utilized a murine AIDS model and four experimental groups: control, murine AIDS, ethanol, and ethanol plus murine AIDS.
- Assessed coronary microcirculation integrity and macromolecular leakage using intravital fluorescence microscopy and FITC-albumin.
- Quantified coronary permeability via the O/I ratio of vessel luminosity during perfusion.
Main Results:
- Murine AIDS significantly increased coronary permeability compared to controls, with leakage escalating over time.
- Chronic ethanol consumption did not affect coronary permeability to macromolecules.
- Ethanol consumption demonstrated an improvement in coronary hemodynamics in the murine AIDS model.
Conclusions:
- Murine AIDS adversely affects the structural and functional integrity of the coronary endothelium.
- Moderate ethanol consumption appears to modulate coronary microcirculation function in the context of murine AIDS.