Document Detail

Evolution of HTLV-1 proviral load in patients from Salvador, Brazil.
MedLine Citation:
PMID:  22846124     Owner:  NLM     Status:  In-Data-Review    
INTRODUCTION: Variations in human T cell lymphotropic virus type 1 (HTLV-1) proviral load (PVL) in infected individuals over time are not well understood.
OBJECTIVE: To evaluate the evolution of proviral load in asymptomatic individuals and HAM/TSP patients in order to help determine periodicity for measuring proviral load.
METHODS: A group of 104 HTLV-1 infected patients, followed at the HTLV reference center in Salvador, Brazil, were included in the study (70 asymptomatic and 34 HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) patients). HTLV-1 PVL was measured using real-time polymerase chain reaction (PCR) at baseline and again at another point, either ≤ 12 months, between 12-24 months, or ≥ 24 months.
RESULTS: HAM/TSP patients had higher PVL (ranging from 11,041 to 317,009 copies/10(6) PBMC) when compared to asymptomatic individuals (ranging from 0 to 68,228 copies/10(6) PBMC). No statistically significant differences were observed in the medians of PVL in HAM/TSP patients or asymptomatic individuals over time. However, in asymptomatic individuals with a PVL below 50,000 copies/10(6) PBMC, a statistically significant two-fold increase was observed over time.
CONCLUSION: HTLV-1-PVL remained stable in both asymptomatic individuals and HAM/TSP patients over time. Frequent monitoring of asymptomatic individuals with low PVLs is recommended and further studies should be conducted to assess the course of PVL in these patients over extended periods of time.
Viviana Nilla Olavarria; Alline do Nascimento Gomes; Ramon de Almeida Kruschewsky; Bernardo Galvão-Castro; Maria Fernanda Rios Grassi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases     Volume:  16     ISSN:  1678-4391     ISO Abbreviation:  Braz J Infect Dis     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-07-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9812937     Medline TA:  Braz J Infect Dis     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  357-60     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Editora Ltda. All rights reserved.
Advanced Laboratory of Public Health, Centro Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil; Escola Baiana de Medicina e Saúde Pública (EBMSP) Salvador, Bahia, Brazil.
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