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The effect of RANTES chemokine genetic variants on early HIV-1 plasma RNA among African American injection drug users

  1. Author:
    Duggal, P.
    Winkler, C. A.
    An, P.
    Yu, X. F.
    Farzadegan, H.
    O'Brien, S. J.
    Beaty, T. H.
    Vlahov, D.

  2. Author Address

    New York Acad Med, Ctr Urban Epidemiol Studies, New York, NY 10029 USA. Johns Hopkins Bloomberg Sch Publ Hlth, Dept Epidemiol, Baltimore, MD USA. NCI, SAIC, Basic Res Program, Frederick, MD 21701 USA. Johns Hopkins Bloomberg Sch Publ Hlth, Dept Mol Microbiol & Immunol, Baltimore, MD USA. NCI, Lab Genom Divers, Frederick, MD 21701 USA Duggal, P, New York Acad Med, Ctr Urban Epidemiol Studies, 1216 5th Ave, New York, NY 10029 USA
    1. Year: 2005
  2. Journal: Jaids-Journal of Acquired Immune Deficiency Syndromes
    1. 38
    2. 5
    3. Pages: 584-589
  4. Type of Article: Article
  1. Abstract:

    HIV-1 plasma RNA is a prognostic indicator of HIV-1, and increased levels of HIV-1 plasma RNA are associated with rapid progression to AIDS. Because chemokines and chemokine receptors are involved in the binding and entry of HIV-1, possible effects of host genetics on viral RNA levels should be visible in early infection. HIV-1 plasma RNA was measured within 2 years of seroconversion in 198 seroincident injection drug users followed in the AIDS Link to Intravenous Experience cohort. Genetic variants were identified in the chemokine receptors (CCR2, CCR5, and CCR5 promoter) and the chemokine RANTES using TaqMan and restriction fragment length polymorphism assays. Linear regression of RANTES haplotypes on early HIV-1 plasma RNA identified individuals homozygous for the RANTES RI haplotype as having a lower viral load by almost one-half log(10) unit compared with those bearing non-RANTES R1 haplotypes (-0.43, 95% confidence interval: -0.74, -0.12). Genetic variants in RANTES may downregulate RANTES gene expression and increase early HIV-1 plasma RNA. Because RANTES is a critical chemokine and competitively inhibits HIV-1 by binding to its receptor CCR5, treatment to enhance RANTES expression may assist in delaying the progression of AIDS by decreasing the initial viral load

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External Sources

  1. View record in Web of Science®
  2. WOS: 000228018200012

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