Abstract:
OBJECTIVE:Mycosis fungoides (MF) is the most frequent form of cutaneous T cell lymphoma (CTCL). Human T cell leukemia virus type 1 (HTLV-1) involvement in MF progression is a matter of debate. The goal of the investigation was to search for HTLV-1 markers in a group of MF patients from a nonendemic area to HTLV-1. MATERIALS AND METHODS:Fifty MF patients and 60 healthy donors from Moscow and the Moscow region were examined for HTLV-1 markers by Western blot, PCR, nested PCR, PCR/Southern hybridization, TaqMan real-time PCR and sequencing. RESULTS:Plasma samples from MF patients were repeatedly negative for antibodies to HTLV-1 structural proteins. HTLV-1 tax-related sequences (corresponding to the second exon) were found in blood from 20 of 50 MF patients and in 3 of 5 saliva specimens. Three of 8 sequenced tax-like amplimers were identical and 5 of 8 contained 1-2 substitutions. tax transcripts and antibodies to p40(tax) were detected in some 'PCR-tax'-positive MF patients. Defective HTLV-1 genomes were demonstrated in 2 of 50 MF patients. Phylogenetic analysis of the defective genome 5'-LTR sequence revealed a relationship with HTLV-1a sequences from the transcontinental subgroup of HTLV-1. CONCLUSIONS:HTLV-1 tax-like sequences were revealed in blood and for the first time in saliva from MF patients living in an HTLV-1 nonendemic region. Expression of tax-like sequences was confirmed by both reverse transcription PCR and Western blot.
journal_name
Intervirologyjournal_title
Intervirologyauthors
Morozov VA,Syrtsev AV,Ellerbrok H,Nikolaeva EV,Bavykin AS,Pauli Gdoi
10.1159/000086063keywords:
subject
Has Abstractpub_date
2005-01-01 00:00:00pages
362-71issue
6eissn
0300-5526issn
1423-0100pii
86063journal_volume
48pub_type
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