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1996-02-26
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Document 0046
DOCN M9620046
TI In vivo proviral burden and viral RNA expression in T cell subsets of
patients with human T lymphotropic virus type-1-associated
myelopathy/tropical spastic paraparesis.
DT 9602
AU Cho I; Sugimoto M; Mita S; Tokunaga M; Imamura F; Ando M; First
Department of Internal Medicine, Kumamoto University School; of
Medicine, Japan.
SO Am J Trop Med Hyg. 1995 Oct;53(4):412-8. Unique Identifier : AIDSLINE
MED/96074151
AB We used in situ hybridization combined with immunocytochemistry, cell
sorting, and the polymerase chain reaction (PCR) to investigate clinical
events in three asymptomatic carriers of human T lymphotrophic virus
type-1 (HTLV-1) and ten patients with HTLV-1-associated
myelopathy/tropical spastic paraparesis (HAM/TSP). The objective was to
determine which T cell subset of peripheral blood mononuclear cells
(PBMC), CD4 or CD8, were infected by HTLV-1 and the manner in which
HTLV-1 proviral DNA was expressed at the level of the single cell. Both
CD4-positive and CD8-positive cells of the PBMC from five patients with
HAM/TSP were infected with HTLV-1. The proportion of HTLV-1-infected
cells was 2.5-40% in the CD4-positive subset and 1.0-65% in the CD8-
positive subset, when quantified by PCR using HTLV-1-infected MT2 cells
as a positive standard. Proviral DNA of HTLV-1 was expressed in both
CD4-positive cells and CD8-positive cells of the PBMC from six patients
with HAM/TSP and three asymptomatic HTLV-1 carriers. In patients with
HAM/TSP, the proportion of the cells expressing HTLV-1 proviral DNA was
0.02-0.1% in both subsets. In asymptomatic carriers, the expression of
HTLV-1 proviral DNA was 0.01-0.02% in the CD4-positive subset and 0.01%
in the CD8-positive subset. Therefore, HTLV-1 possessed similar in vivo
cellular tropism for both CD4-positive cells and CD8-positive cells and
HTLV-1 proviral DNA was expressed in vivo in both circulating T cell
subsets.(ABSTRACT TRUNCATED AT 250 WORDS)
DE Adult Aged Aged, 80 and over Base Sequence Cell Separation DNA
Primers/CHEMISTRY DNA, Viral/BIOSYNTHESIS/CHEMISTRY Female Flow
Cytometry Gene Expression Regulation, Viral Human
HTLV-I/GENETICS/*PHYSIOLOGY Immunohistochemistry In Situ Hybridization
Male Microspheres Middle Age Molecular Sequence Data Paraparesis,
Tropical Spastic/*VIROLOGY Polymerase Chain Reaction
Proviruses/GENETICS/*PHYSIOLOGY RNA, Messenger/BIOSYNTHESIS RNA,
Viral/*BIOSYNTHESIS T-Lymphocyte Subsets/*VIROLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).