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  • Title: Fever, human herpesvirus-6 (HHV-6) seroconversion, and acute rejection episodes as a function of the initial seroprevalence for HHV-6 in renal transplant recipients.
    Author: Deborska-Materkowska D, Lewandowski Z, Sadowska A, Nowacka-Cieciura E, Chudziński W, Czerwiński J, Paczek L, Durlik M.
    Journal: Transplant Proc; 2006; 38(1):139-43. PubMed ID: 16504686.
    Abstract:
    Human herpesvirus-6 (HHV-6) is an opportunistic viral pathogen of emerging clinical significance in immunocompromised patients. We performed a seroepidemiological survey to test the relation between seroprevalence among donors and recipients for HHV-6 at three endpoints. Before transplantation sera obtained from cadaveric donors and from potential recipients were tested for IgG antibodies against HHV-6 using an enzyme-linked immunoassay. The group of recipient sera, including samples obtained before as well as 2, 4, 12, and 48 weeks after transplantation, were tested for anti-HHV-6 IgM antibodies using an indirect immunofluorescence assay. The statistical analysis was performed with the Cox proportional hazards models. The HHV-6 seronegative group (n = 11) compared with the HHV-6 seropositive group (n = 109) showed twice the risk of HHV-6 IgM seroconversion (RR = 2.24; P < .04), with a greater risk of fever, namely 3.8, which was on the verge of statistical significance. The opposite trend toward an association with acute rejection episodes was observed among HHV-6 seronegative patients (RR = 1.81). The presence of IgG antibody in the sera of donors to IgG seropositive recipients had no association with the occurrence of IgM seroconversion. In contrast, IgM antibodies to HHV-6 appeared in four of five seronegative patients who received allografts from IgG seropositive donors. These preliminary data suggest that the effects seem to be the consequence of HHV-6 transmission through a renal allograft.
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