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M9471073.TXT
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1994-08-09
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Document 1073
DOCN M9471073
TI Sequence analysis of a viral gene found within the central nervous
system of patients with human T-cell lymphotropic virus type
I-associated disease.
DT 9409
AU Maroushek SR; Univ. of Minnesota
SO Diss Abstr Int [B]; 53(10):5067 1993. Unique Identifier : AIDSLINE
ICDB/94690940
AB Human T-cell lymphotropic virus type I (HTLV-I) is a type C retrovirus
endemic to portions of Japan, the Caribbean, Africa, South America, and
the United States. Although infection with HTLV-I causes predominantly
asymptomatic infections, HTLV-I is the etiologic agent of adult I-cell
leukemia (ATL) and recent studies implicate HTLV-I in the neurologic
diseases HTLV-I associated myelopathy/tropical spastic paraparesis
(HAM/TSP) as well. Because of the association of the virus with both a
neurologic and a leukemic disease and because of precedents in animal
and human virus systems, this thesis focused on the analysis of sequence
variations within the env gene of HTLV-I with the hypothesis that there
would be changes that could be linked to neurologic disease. Viral env
DNA from the CNS tissues of HAM, TSP, and ATL patients was amplified,
cloned, and sequenced. Sequence analysis revealed the presence of
mutations in the env gene of both HAM and TSP, but not ATL-associated
viruses that encode for proteins that could potentially result in a
nonfunctional or defective provirus. A model was proposed that could
explain how the defective proviruses arise, how they spread to and
within the CNS, and how the defective proviruses may cause
neuropathologic damage. (Full text available from University Microfilms
International, Ann Arbor, MI, as Order No. AAD93-06513)
DE Central Nervous System/*METABOLISM Genes, Viral HTLV-I
Infections/*GENETICS Human *Sequence Analysis THESIS
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).