Journal
JOURNAL OF CLINICAL VIROLOGY
Volume 43, Issue 3, Pages 255-259Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcv.2008.07.005
Keywords
HHV8; Viral load; Plasma; PBMCs; MCD; PEL
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Background: The quantitative evaluation of human herpesvirus 8 (HHV8) DNA is not well described in the clinical management of HHV8-related lymphoproliferative diseases. Objectives: To evaluate and to compare HHV8 viral load in different blood compartments from patients with multicentric Castleman's disease (MCD), primary effusion lymphoma (PEL) and HHV8-associated solid lymphoma (SLY) and to establish which clinical sample would be preferable for HHV8 DNA testing. Study design: We assessed HHV8 DNA in plasma and peripheral blood mononuclear cells (PBMCs) paired samples from 7 PEL, 8 MCD, 2 SLY HIV+ patients at the diagnosis and during the course of the illness by using a real time PCR assay. Results: HHV8 viremia was always detectable at diagnosis. HHV8 DNA levels were correlated in matched pairs of samples at diagnosis and during follow-up (Spearman correlation coefficient: r = 0.83, p < 0.001 and r = 0.73, p < 0.001, respectively). The performance characteristics of the PCR assay with both materials did not show disparity by the analysis of the receiver operating characteristic (ROC) curve (X(1)(2) = 0.50; p = 0.48). Conclusions: Plasma or PBMCs are both adequate samples for HHV8 DNA quantification and Real time PCR provides a reliable method to estimate viral replication in patients with HHV8-related lymphoproliferations, where HHV8 viral load is a consistent feature. (C) 2008 Elsevier B.V. All rights reserved.
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