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    Science. 2009 Oct 23;326(5952):585-9. Epub 2009 Oct 8.

    Detection of an infectious retrovirus, XMRV, in blood cells of patients with chronic fatigue syndrome.

    Source

    Whittemore Peterson Institute, Reno, NV 89557, USA.

    Abstract

    Chronic fatigue syndrome (CFS) is a debilitating disease of unknown etiology that is estimated to affect 17 million people worldwide. Studying peripheral blood mononuclear cells (PBMCs) from CFS patients, we identified DNA from a human gammaretrovirus, xenotropic murine leukemia virus-related virus (XMRV), in 68 of 101 patients (67%) as compared to 8 of 218 (3.7%) healthy controls. Cell culture experiments revealed that patient-derived XMRV is infectious and that both cell-associated and cell-free transmission of the virus are possible. Secondary viral infections were established in uninfected primary lymphocytes and indicator cell lines after their exposure to activated PBMCs, B cells, T cells, or plasma derived from CFS patients. These findings raise the possibility that XMRV may be a contributing factor in the pathogenesis of CFS.

    PMID:
    19815723
    [PubMed - indexed for MEDLINE]

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