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Subacute progression of human T-lymphotropic virus type I-associated myelopathy/tropical spastic paraparesis

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Abstract

Although human T-lymphotropic virus type I (HTLV-I)-associated myelopathy/tropical spastic paraparesis (HAM/TSP) is usually described as a chronic disabling disease, a rapid course over months or even weeks has been reported in some patients. The authors describe the clinical features of HAM/TSP in a Brazilian cohort and evaluate the prevalence of patients with a subacute progression of the disease. This was defined as the requirement of a wheelchair during the first 2 years after the onset of symptoms. Patients with this subacute course and patients with the chronic clinical course were compared in terms of their HTLV-I proviral loads (PLs) using real-time polymerase chain reaction (PCR). Seven out of 88 patients (7.9%) had a subacute progression. All patients were women and 5/7 acquired HTLV-I through sexual contact. There was no significant difference in the real-time PLs between the group with subacute evolution (mean 8.5 copies/100 cells, range 6.03 to 12.09) and those patients with a typical course of disease (mean 11.34 copies/100 cells, range 0.4 to 67.72) (P = .68), suggesting that factors other than the number of infected cells are implicated in the development of such an aggressive course of disease. Early recognition of this subgroup is important because immunosuppressive treatment might be beneficial if instituted promptly.

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Authors and Affiliations

  1. The Reference Center on Neuroinfections and HTLV, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil

    Marco A. Lima, Maria J. Andrada-Serpa & Abelardo Q. C. Araújo

  2. Virology Laboratory, Instituto de Pesquisa Clínica Evandro Chagas (IPEC), Fundação Oswaldo Cruz, Rio de Janeiro, Brazil

    Ramza C. Harab, Doris Schor & Maria J. Andrada-Serpa

Authors
  1. Marco A. Lima
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  2. Ramza C. Harab
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  3. Doris Schor
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  4. Maria J. Andrada-Serpa
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  5. Abelardo Q. C. Araújo
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Correspondence to Marco A. Lima.

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This work was supported by CNPq (Brazilian National Research Council), Fundação Oswaldo Cruz and the Brazilian Ministry of Health.

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Lima, M.A., Harab, R.C., Schor, D. et al. Subacute progression of human T-lymphotropic virus type I-associated myelopathy/tropical spastic paraparesis. Journal of NeuroVirology 13, 468–473 (2007). https://doi.org/10.1080/13550280701510096

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  • DOI: https://doi.org/10.1080/13550280701510096

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