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Clinical and Diagnostic Laboratory Immunology, January 2001, p. 170-173, Vol. 8, No. 1
Department of Pediatrics, Fujita Health
University School of Medicine, Toyoake, Aichi,1
Special Reference Laboratories Inc.,
Tokyo,3 and Department of
Transplantation and Immunology, Kyoto University School of Medicine,
Kyoto,4 Japan, and National Cancer
Institute, National Institutes of Health, Bethesda,
Maryland2
Received 3 April 2000/Returned for modification 18 August
2000/Accepted 18 September 2000
Cross-reactivity between human herpesvirus 6 (HHV-6) and human
herpesvirus 7 (HHV-7) antibodies and the reliability of specific serological assays were analyzed for 12 patients with concurrent HHV-6
and HHV-7 antibody responses after transplantation with a liver from a
living relative by using an immunofluorescence assay (IFA). A
neutralizing antibody titer assay (NT) and an immunoblot assay (IB)
designed to detect immunoglobulin M (IgM) antibody to the HHV-6
immunodominant 101-kDa protein were compared in the diagnosis of an
active HHV-6 infection. A total of 9 of 12 patients demonstrated
concurrent HHV-6 and HHV-7 antibody responses, including increased IgG
titers and/or the presence of IgM by IFA, and were thus analyzed for
cross-reactive antibody to heterologous virus. The average percentages
of residual antibody to HHV-6 and HHV-7 after absorption with HHV-6
antigen were 32.6% (range, 6 to 50%) and 55.6% (range, 35 to 100%),
respectively. All 12 patients were subsequently analyzed for HHV-6
antibody by using IB and NT. IB detected IgM antibody to the 101-kDa
protein in 75% (9 of 12) of the recipients. A significant rise in the
NT antibody titer was detected in the same nine samples. However, HHV-6
DNA was detected by PCR in only five of nine plasma samples collected from recipients with a specific serologic response against HHV-6.
1071-412X/01/$04.00+0 DOI: 10.1128/CDLI.8.1.170-173.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Comparison of Specific Serological Assays for
Diagnosing Human Herpesvirus 6 Infection after Liver
Transplantation
*
Corresponding author. Mailing address: Laboratory of
Virology, Research Institute for Disease Mechanism and Control, Nagoya University School of Medicine, Tsurumai-cho, Showa-ku, Nagoya 4668550, Japan. Phone: 8 1 -52-7442451. Fax: 8 1 -52-7442452. E-mail:
tetsushi{at}med.nagoya-u.ac.jp.
| Antimicrob. Agents Chemother. | Clin. Microbiol. Rev. | Infect. Immun. |
|---|---|---|
| J. Clin. Microbiol. | J. Virol. | ALL ASM JOURNALS |