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  • Title: Epidemiology of HHV-8 infection in HIV-positive patients with and without Kaposi sarcoma: diagnostic relevance of serology and PCR.
    Author: Albrecht D, Meyer T, Lorenzen T, Stoehr A, Arndt R, Plettenberg A.
    Journal: J Clin Virol; 2004 Jun; 30(2):145-9. PubMed ID: 15125870.
    Abstract:
    BACKGROUND: Kaposi's sarcoma (KS) remains the most common neoplasm in HIV-infected patients. Human herpesvirus 8 (HHV-8) infection is etiologically associated with KS. Diagnostic procedures with regard to HHV-8 infection are not routinely performed in HIV-infected patients; diagnostic and prognostic value of HHV-8 serology or PCR are unknown in this setting. Epidemiological data concerning HHV-8 infection of HIV-infected patients in Germany are rare. OBJECTIVES: To assess prevalence of HHV-8 infection in a cohort of HIV-infected patients with and without KS in Germany and to correlate this to manifestations and clinical course of KS. STUDY DESIGN: HHV-8 serology was performed in 483 patients in routine care for HIV-infection in northern Germany. HHV-8 DNA was analyzed by PCR in peripheral blood mononuclear cells (PBMC) of 293 patients; in a subgroup multiple samples were analyzed. History and manifestations of KS were recorded. RESULTS: HHV-8 antibodies were detected using IFT in 91% of 33 patients with KS and 52% of 398 patients without KS. In 36 of 293 (12.3%) patients HHV-8 DNA was detected in PBMC. In general, HHV-8 DNA was not continuously detected when multiple samples from the same patient were analyzed. Patients with KS history were more likely to be PCR positive than those without (45.5% versus 7.8%). In patients with active KS HHV-8 DNA was detected more frequently than in patients with disease remission. HHV-8 DNA was not detected in serologically negative patients. However, three patients with KS history in full remission for several years were seronegative. CONCLUSIONS: HIV-infected patients were frequently found to be positive for HHV-8 antibodies. The number of patients positive for viral DNA in PBMC was much smaller. Single PCR-examinations were of little value for prognosis, but repeated detection of HHV-8 DNA represents an increased risk of disease activity.
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