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    The immunological footprint of CMV in HIV-1 patients stable on long-term ART

    Access Status
    Open access via publisher
    Authors
    Affandi, J.
    Montgomery, J.
    Brunt, S.
    Nolan, D.
    Price, Patricia
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Affandi, J. and Montgomery, J. and Brunt, S. and Nolan, D. and Price, P. 2015. The immunological footprint of CMV in HIV-1 patients stable on long-term ART. Immunity & Ageing. 12: pp. 14-14.
    Source Title
    Immunity & Ageing
    DOI
    10.1186/s12979-015-0041-0
    Additional URLs
    http://www.immunityageing.com/content/12/1/14
    ISSN
    1742-4933
    School
    School of Biomedical Sciences
    URI
    http://hdl.handle.net/20.500.11937/27354
    Collection
    • Curtin Research Publications
    Abstract

    BACKGROUND:Most HIV-infected persons are cytomegalovirus (CMV) seropositive and retain latent virus that can be reactivated by immune activation. Their T cell populations express markers reflecting a late stage of differentiation, but the contributions of HIV and CMV to this profile are unclear. We investigated the immunological "footprint" of CMV in HIV patients who had a history of extreme immunodeficiency but were now stable on antiretroviral therapy (ART).RESULTS:Twenty CMV seropositive HIV patients >50years old with nadir CD4 T-cell counts <200 cells/mul were studied after >12years on ART. 16 CMV seropositive and 9 CMV seronegative healthy controls were included. CMV antibody titres were higher in HIV patients than controls (P<0.001-0.003). Levels of soluble B-cell activating factor (sBAFF) were elevated in patients (P=0.002) and correlated with levels of CMV antibodies (P=0.03-0.002), with no clear relationship in controls. CD8 T-cell IFNgamma responses to the IE1 peptide (VLE) remained elevated in HIV patients (P=0.005). The CD57 + CD45RA + CD27 phenotype of CD8 T-cells correlated with age (r=0.60, P=0.006), antibodies against CMV IE1 protein (r=0.44, P=0.06) and CD4 T-cell IFNgamma response to CMV lysate (r=0.45, P=0.05).CONCLUSIONS:Humoral and T-cell responses to CMV remained elevated in HIV patients after >12years on ART. Age and presence of CMV disease influenced CD8 T-cell phenotypes. Elevated levels of sBAFF may be a consequence of HIV disease and contribute to high titres of CMV antibody.

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