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1994-08-27
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38 lines
Document 0706
DOCN M9480706
TI Skeletal muscle involvement in tropical spastic
paraparesis/HTLV-1-associated myelopathy.
DT 9410
AU Gabbai AA; Wiley CA; Oliveira AS; Smith R; Schmidt B; Nobrega JA; Bordin
JO; Roman GC; Department of Neurology, Escola Paulista de Medicina,
Brazil.
SO Muscle Nerve. 1994 Aug;17(8):923-30. Unique Identifier : AIDSLINE
MED/94316236
AB The frequency of muscle involvement in TSP/HAM is not known, nor is the
precise role that HTLV-1 and the diverse cytokines play in the genesis
of HTLV-1-associated diseases. In order to better define the frequency
and characteristics of the skeletal muscle involvement in TSP/HAM, we
studied 11 affected patients. EMG was performed in 9 patients and muscle
biopsy was performed in all 11. Muscle tissue was analyzed using:
reverse transcriptase PCR for interleukin-1 in 8; PCR for HTLV-1
proviral DNA in 5; and electron microscopy for viral particles in 3. We
found pathologic alterations in all 11 patients. Four patients (36%) had
a neurogenic process, while a primary muscle involvement was observed in
the rest (64%). Four patients (36%) had polymyositis, and 3 (27%) had a
noninflammatory myopathy. Muscle weakness in the upper limbs was
significantly associated with inflammation in the muscle biopsy. EMG was
abnormal in only 2 of 9 patients. Reverse transcriptase PCR did not
demonstrate message for interleukin-1 in any sample examined. PCR did
identify HTLV-1 proviral DNA in the muscle of 3 patients.
Retroviral-like particles were found, by EM, in only one biopsy. HTLV-1
may play an important role in the pathogenesis of the frequent
myopathies associated with HAM/TSP.
DE Adult Base Sequence Case Report DNA Primers DNA, Viral/GENETICS
Female Human HTLV-I/GENETICS Male Middle Age Molecular Sequence
Data Muscles/*PATHOLOGY Paraparesis, Tropical
Spastic/GENETICS/*PATHOLOGY Proviruses/GENETICS JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).