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  • Title: Detection of HHV-8 (human herpesvirus-8) genomes in induced peripheral blood mononuclear cells (PBMCs) from US blood donors.
    Author: Qu L, Triulzi DJ, Rowe DT, Jenkins FJ.
    Journal: Vox Sang; 2011 Apr; 100(3):267-71. PubMed ID: 20825598.
    Abstract:
    BACKGROUND: Human herpesvirus-8 (HHV-8) causes Kaposi's sarcoma and can be detected and induced in peripheral blood mononuclear cells (PBMCs) from infected individuals. The prevalence of viral genomes in induced/cultured PBMCs from healthy blood donors has not been systematically studied. MATERIALS AND METHODS: PBMCs from 164 donors were purified and stored as two equal aliquots in liquid nitrogen. One aliquot was used for CD19+ B-cell purification with a fraction reserved for DNA extraction. The second aliquot was cultured for 2 or 4 days in culture media containing n-butyrate and tetradecanoyl phorbol acetate. DNA was extracted from all four cell sources: PBMCs, purified B cells, induced PBMCs harvested at days 2 and 4 of culture. A sensitive real-time PCR with a DNA equivalent of 3×10(5) cells per reaction was run in duplicate for all samples along with a quantitative HHV-8 DNA standard ranging from 1.6 to 200 copies. RESULTS: For all 164 donors, HHV-8 genomes were not detected in the DNA equivalent of 3-6×10(5) of PBMCs and induced/cultured PBMCs with a real-time PCR assay (95% CI: 0-3.5/164). HHV-8 DNA was not detected from DNA equivalent of 1.5 (0.5-5.6)×10(5) CD19+ B cells from 139/164 donors. HHV-8 antibodies were detected in 7 of the 164 donors (4.3%). CONCLUSIONS: HHV-8 genomes were not detected from PBMCs, induced/cultured PBMCs and CD19+ B cells from 164 blood donors. The level of detectable HHV-8 genomes in blood donors seems to be extremely low, if they exist.
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