Published in:
Open Access
01-12-2006 | Research article
Long-term changes of serum chemokine levels in vaccinated military personnel
Authors:
Beda Brichacek, Christophe Vanpouille, Alexander J Trachtenberg, Tatiana Pushkarsky, Larisa Dubrovsky, Gregory Martin, Gary Simon, Michael Bukrinsky
Published in:
BMC Immunology
|
Issue 1/2006
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Abstract
Background
Members of the United States Armed Forces receive a series of vaccinations during their course of service. To investigate the influence of multiple vaccinations on innate immunity, we measured concentrations of a panel of immunomodulatory and pro-inflammatory cytokines in serum samples from a group of such individuals.
Results
Significantly increased levels of macrophage inflammatory protein 1α (MIP-1α), MIP-1β and interleukin 8 (IL-8) were detected. Since these cytokines are known to have anti-human immunodeficiency virus (HIV) activity, we tested the effect of serum from these individuals on HIV-1 infectivity and susceptibility of their peripheral blood mononuclear cells (PBMCs) to HIV-1 infection in vitro. Sera from vaccinated military personnel inhibited, and their PBMCs were partially resistant to, infection by HIV-1 strains tropic to CCR5 (R5), but not to CXCR4 (X4), chemokine receptor.
Conclusion
These findings demonstrate that increased anti-HIV chemokines can be detected in vaccine recipients up to 68 weeks following immunization.