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  • Title: Human herpesvirus 8 shedding in the mouth and blood of hemodialysis patients.
    Author: Al-Otaibi LM, Moles DR, Porter SR, Teo CG.
    Journal: J Med Virol; 2012 May; 84(5):792-7. PubMed ID: 22431028.
    Abstract:
    In Saudi Arabia, the prevalence of transplantation-associated Kaposi's sarcoma (KS) is high, and there is disparity in the prevalence rates of human herpesvirus 8 (HHV-8) infection between patients with renal disease and the general population. It was hypothesized that oral HHV-8 transmission among patients undergoing hemodialysis treatment contributes to the high prevalence of infection in renal disease patients. The detection rates of anti-HHV8-IgG in plasma and HHV-8-DNA in CD45(+)-peripheral blood cells of 72 hemodialysis patients were compared first with those of 178 blood donors and 60 pregnant women. Between the hemodialysis patients and the apparently healthy people sampled, the detection rate of anti-HHV-8-IgG was 16.7% versus 0.4% (P < 0.001) and that of HHV-8-DNA was 4.2% versus 0.4%, (P < 0.05). HHV-8 DNA was determined in oral samples and the HHV-8 viral load measured in saliva of patients undergoing hemodialysis. The amount of virus shed into saliva ranged between 8,600 and 119,562,500 (mean: 24,009,360) genome-equivalents/ml among the five patients in whom oral HHV-8 DNA was detected. Finally, HHV-8-subgenomic sequencing was conducted which showed that orally shed HHV-8 in four patients belonged to genotype C2, and in one patient to genotypes A1 and C2. HHV-8 shed in the mouth of hemodialysis patients may be extensive and diverse. Oral fluid in addition to blood is thus a likely vehicle for transmission of HHV-8, possibly contributing to the high risk of HHV-8 infection in patients undergoing hemodialysis and to KS following immunosuppression after renal transplantation.
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