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Clinical and Diagnostic Laboratory Immunology, 03 1997, 189-194, Vol 4, No. 2
K Kubo, T Fujiyoshi, MM Yokoyama, K Kamei, JA Richt, B Kitze, S Herzog, M Takigawa and S Sonoda
Borna disease virus (BDV) infection has been suspected to be a possible
etiological factor in human psychiatric disorders and recently in chronic
fatigue syndrome. Evidence of the correlation of BDV infection with these
disorders remained unclear. Kagoshima is known to be one of the major areas
in which human T-cell leukemia virus type 1 (HTLV-1) is endemic; this is
the first isolated human retrovirus that causes adult T-cell leukemia with
neurological symptoms. The present study aimed to clarify whether BDV and
HTLV-1 infections are associated with psychiatric disorders among Japanese
patients. Subjects were 346 patients with psychiatric disorders
(schizophrenia, 179; mood disorder, 123; and others, 44) and 70 healthy
controls. Anti-BDV antibodies from plasma samples were screened by the
indirect immunofluorescence (IF) method using BDV-infected MDCK cells.
Results revealed that only three samples were found to be weakly positive
for BDV in the IF assay and seronegative by Western blot (immunoblot)
assay. Furthermore, BDV-p24 related RNA in peripheral blood mononuclear
cells from 106 of 346 psychiatric patients and 12 or 70 healthy controls by
p24-reverse transcription PCR was examined. Two mood disorder patients were
positive for BDV-p24 RNA but seronegative. To detect anti-HTLV-1 antibodies
the plasma samples were screened by the particle agglutination method and
no significant difference in seropositivity for anti-HTLV-1 antibody was
found between the patients and healthy controls. These results also
suggested that there is a lack of association between BDV and HTLV-1
infections with psychiatric disorders among Japanese patients.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
Lack of association of Borna disease virus and human T-cell leukemia virus type 1 infections with psychiatric disorders among Japanese patients
Department of Neuropsychiatry, Faculty of Medicine, Kagoshima University, Japan.
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