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M9490608.TXT
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1994-09-24
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Document 0608
DOCN M9490608
TI Detection of human T lymphotrophic virus type I (HTLV-I) proviral DNA
and analysis of T cell receptor V beta CDR3 sequences in spinal cord
lesions of HTLV-I-associated myelopathy/tropical spastic paraparesis.
DT 9411
AU Hara H; Morita M; Iwaki T; Hatae T; Itoyama Y; Kitamoto T; Akizuki S;
Goto I; Watanabe T; Department of Neurology, Faculty of Medicine, Kyushu
University,; Fukuoka, Japan.
SO J Exp Med. 1994 Sep 1;180(3):831-9. Unique Identifier : AIDSLINE +
AB Identification of the localization of human T lymphotrophic virus type I
(HTLV-I) proviral DNA in the central nervous system (CNS) is crucial to
the understanding of the pathogenesis of HTLV-I-associated myelopathy
(HAM)/tropical spastic paraparesis (TSP) pathogenesis. We have developed
a sensitive detection method, called two-step polymerase chain reaction
(PCR) in situ hybridization, which enabled us to detect the HTLV-I
proviral DNA in paraffin-embedded spinal cord tissue sections from
HAM/TSP patients. HTLV-I proviral DNA was detected only in the nucleus
of lymphocytes that had infiltrated into the spinal cord. However, no
proviral DNA was amplified in any neuronal cells, including neurons and
glial cells. This indicates that the demyelination of the spinal cord by
HTLV-I as a result of viral infection of oligodendrocytes or neuronal
cells is unlikely. The T cell receptor V beta gene sequence from
lymphocytes in the spinal cord lesions taken from the same HAM/TSP
autopsy cases revealed unique and restricted CDR3 motifs, CASSLXG(G)
(one-letter amino acid. X is any amino acid), CASSPT(G), and CASSGRL
which are similar to those described in T cells from brain lesions of
multiple sclerosis (MS) and in a rat T cell clone derived from
experimental allergic encephalomyelitis (EAE) lesions. The present
results suggest that T cells containing restricted V beta CDR3 motifs,
which are also found in MS and EAE, become activated upon HTLV-I
infection and infiltrate into the spinal cord lesions of HAM/TSP
patients.
DE Adult Aged Amino Acid Sequence Base Sequence DNA, Viral/*ANALYSIS
Female Human HTLV-I/*GENETICS Lymphocyte Transformation Male Middle
Age Molecular Sequence Data Paraparesis, Tropical
Spastic/IMMUNOLOGY/*MICROBIOLOGY/PATHOLOGY Proviruses/*GENETICS
Receptors, Antigen, T-Cell, alpha-beta/*GENETICS Spinal
Cord/IMMUNOLOGY/*MICROBIOLOGY/PATHOLOGY Support, Non-U.S. Gov't
JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).