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Journal of Clinical Microbiology, April 2001, p. 1407-1415, Vol. 39, No. 4
Department of Infectious Diseases and
Microbiology, Graduate School of Public Health, University of
Pittsburgh,1 and Departments of
Pediatrics2 and
Surgery,3 Children's Hospital of
Pittsburgh, Pittsburgh, Pennsylvania 15213
Received 27 July 2000/Returned for modification 15 November
2000/Accepted 27 December 2000
Solid-organ transplant recipients are at risk for development of
lymphoproliferative diseases. The purpose of this study was to examine
the distribution of Epstein-Barr virus (EBV) load in the peripheral
blood of pediatric transplant recipients who had become chronic viral
load carriers (>8 copies/105 lymphocytes for >2 months).
A total of 19 patients with viral loads ranging from 20 to 5,000 viral
genome copies/105 lymphocytes were studied. Ten patients
had no previous diagnosis of posttransplant lymphoproliferative disease
(PT-LPD), while nine had recovered from a diagnosed case of PT-LPD. No
portion of the peripheral blood viral load was detected in the
cell-free plasma fraction. Viral DNA was found in a population of cells characterized as CD19hi and immunoglobulin D
negative, a phenotype that is consistent with the virus
being carried exclusively in the memory B-cell compartment of the
peripheral blood. There was no difference in the compartmentalization
based upon either the level of the viral load or the past diagnosis of
an episode of PT-LPD. These results have implications for the design of
tests to detect EBV infection and for the interpretation and use of
positive EBV PCR assays in the management of transplant recipients.
0095-1137/01/$04.00+0 DOI: 10.1128/JCM.39.4.1407-1415.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Pediatric Solid-Organ Transplant Recipients Carry
Chronic Loads of Epstein-Barr Virus Exclusively in the
Immunoglobulin D-Negative B-Cell Compartment
*
Corresponding author. Mailing address: Department of
Infectious Diseases and Microbiology, Graduate School of Public Health, 130 DeSoto St., Pittsburgh, PA 15213. Phone: (412) 624-1529. Fax: (412)
383-7490. E-mail: rowe1+{at}pitt.edu.
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