Evaluation of cardiovascular biomarkers In HIV-infected patients switching to abacavir or tenofovir based therapy

BMC Infectious Diseases

Alex L Laursen¹  Lars Østergaard¹  Bente L Langdahl³  Ulla S Nielsen¹  Christian A Frederiksen²  Jesper Melchjorsen¹  Martin Tolstrup¹  Thomas A Rasmussen¹ 

[1] Department of Infectious Diseases, Aarhus University Hospital, Skejby, Denmark;Department of Anaesthesiology and Intensive Care, Aarhus University Hospital, Skejby, Denmark;Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Skejby, Denmark

关键词: cardiovascular disease;    tenofovir;    abacavir;    HIV;   

Others  :  1175582
DOI  :  10.1186/1471-2334-11-267

 received in 2011-06-20, accepted in 2011-10-04,  发布年份 2011

【 摘 要 】

Background

Our objective was to evaluate and compare the effect of abacavir on levels of biomarkers associated with cardiovascular risk.

Methods

In an open-label randomized trial, HIV-infected patients were randomized 1:1 to switch from zidovudine/lamivudine to abacavir/lamivudine or tenofovir/emtricitabine. In the present analysis, we measured levels of interleukin-6 (IL-6), high-sensitivity C-reactive protein (hs-CRP), soluble intercellular adhesion molecule-1 (sICAM-1), soluble vascular adhesion molecule-1 (sVCAM-1), E-selectin, and myeloperoxidase (MPO) at baseline and 4, 12, and 48 weeks after randomization. D-dimer and fasting lipids were measured at baseline and weeks 12 and 48. Levels of biomarkers at all time points and changes from baseline were compared across study arms using Wilcoxon rank sum test.

Results

Of 40 included patients, 35 completed 48 weeks of randomized therapy and follow up. Levels of E-selectin (P = 0.004) and sVCAM-1 (P = 0.041) increased transiently from baseline to week 4 in the abacavir arm compared with the tenofovir arm, but no long-term increases were detected. We found no significant differences between study arms in the levels or changes in the levels of sICAM-1, MPO, d-dimer, IL-6, or hs-CRP. Levels of total cholesterol and high density lipoprotein (HDL) increased in the abacavir arm relative to the tenofovir arm, but no difference was found in total cholesterol/HDL ratio.

Conclusion

In patients randomized to abacavir-based HIV-treatment transient increases were seen in the plasma levels of E-selectin and sVCAM-1 compared with treatment with tenofovir, but no difference between study arms was found in other biomarkers associated with endothelial dysfunction, inflammation, or coagulation. The clinical significance of these findings is uncertain.

【 授权许可】

   
2011 Rasmussen et al; licensee BioMed Central Ltd.

【 图 表 】

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