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Monitoring Changes in Human Umbilical Vein Endothelial Cells upon Viral Infection Using Impedance-Based Real-Time Cell Analysis
Published on: May 5, 2023
Viral load of the human immunodeficiency virus could be an independent risk factor for endothelial dysfunction
Arnon Blum1, Vered Hadas, Michael Burke
1Department of Internal Medicine A, Poria Medical Center, Lower Galilee, Israel. navablum@hotmail.com
Insights
High viral load in HIV-positive individuals is linked to poorer endothelial function, suggesting viruses may contribute to atherosclerosis development. This finding highlights the importance of managing viral load in HIV patients.
Area of Science:
- Cardiovascular Medicine
- Infectious Diseases
- Immunology
Background:
- Concerns exist regarding premature coronary artery disease in HIV patients on protease inhibitors.
- Endothelial dysfunction and atherosclerosis markers were observed in HIV infection even before protease inhibitor therapy.
Purpose of the Study:
- To determine the association between endothelial function and HIV viral load, CD4+ T-lymphocyte count, and other atherosclerosis risk factors.
Main Methods:
- A prospective, case-controlled study involving 24 HIV-positive individuals.
- Measured brachial artery diameter, HIV viral load, and CD4+ T-lymphocyte counts.
- Assessed endothelial function in relation to viral load and CD4+ counts.
Main Results:
- A significant inverse correlation was found between viral load and endothelial function (p < 0.005).
- Higher HIV viral load was associated with worse endothelial dysfunction.
Conclusions:
- Elevated viral load in HIV patients is associated with endothelial dysfunction.
- This suggests a potential role for viruses in the pathogenesis of atherosclerosis.
- Further research is warranted to explore the infectious theory of atherosclerosis.
Background:
Recent reports of myocardial infarction in young persons infected with human immunodeficiency virus (HIV) who are receiving protease inhibitor therapy have raised concerns about premature coronary artery disease in this population. However, endothelial dysfunction, hypercoagulability, hypertriglyceridemia, and abnormal coronary artery pathology have been observed in association with HIV infection prior to the availability of protease inhibitor therapy.
Hypothesis:
The study was undertaken to determine the association between endothelial function, viral load, CD4+ count, and other well-established risk factors for atherosclerosis.
Methods:
This prospective, case-controlled study compared viral (HIV) load and the CD4+ T-lymphocyte count and endothelial function in 24 HIV-positive carriers. Brachial artery diameter, HIV viral load, and CD4 count were measured.
Results:
We found that viral load correlated inversely with endothelial function; the higher the viral load, the worse the endothelial dysfunction (p < 0.005).
Conclusion:
High viral load appears to be associated with endothelial dysfunction in patients with HIV. This preliminary observation supports the infectious theory that viruses may play an important role in the pathogenesis of atherosclerosis.
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