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  • Title: Viral genomes in lymphomas of patients with Sjögren's syndrome.
    Author: Fox RI, Saito I, Chan EK, Josephs S, Salahuddin SZ, Ahlashi DV, Staal FW, Gallo R, Pei-Ping H, Le CS.
    Journal: J Autoimmun; 1989 Aug; 2(4):449-55. PubMed ID: 2571338.
    Abstract:
    The recent isolation of a new member of the herpes virus family (Human Herpes Virus-6, HHV-6) from patients with lymphoproliferative diseases prompted us to examine biopsies from six patients with primary Sjögren's Syndrome (SS) who developed non-Hodgkin's lymphoma. Five SS patients developed B-cell lymphoma and one developed a T-cell lymphoma based on immunoglobulin and T-cell antigen receptor (TCAR) gene rearrangements. In two SS patients with B-cell lymphomas, viral DNAs were detected, including: (a) Epstein-Barr Virus (EBV) DNA that exhibited an unusual pattern of restriction fragment length polymorphisms (RFLP) of the Bam M viral DNA segment; and (b) HHV-6 DNA in a second SS patient's lymphoma, with an RFLP similar to recent viral isolates from patients with other lymphoproliferative diseases. Viral DNA was not detected in the other four SS lymphoma biopsies. Also, all six biopsies were examined for presence of other viral DNAs (including CMV, HTLV, HIV and adenovirus) and were negative. Antibody titers to EBV-associated early-diffuse-antigen (EA-D), as assessed by ELISA method, and antibody titers against HHV-6, as detected by immunofluorescence and radio-immunoprecipitation assays, were markedly elevated in several SS patients with lymphoma and pseudolymphoma. These results suggest a potential role of EBV or HHV-6 in the neoplastic transformation that occurs with increased frequency in SS patients.
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