HTLV-I infection and neurological disease in Rio de Janeiro
A de Q Araujo1, A Ali, A Newell
1Instituto de Neurologia da UFRJ, Brazil.
Journal of Neurology, Neurosurgery, and Psychiatry
|February 1, 1992
Summary
Human T-lymphotropic virus type I (HTLV-I) infection was investigated in Brazilian patients with chronic neurological diseases. High rates of HTLV-I antibodies were found in patients with progressive paraparesis, suggesting a link to HTLV-I associated myelopathy.
Area of Science:
- Neurology
- Infectious Diseases
- Virology
Background:
- Chronic neurological diseases present diagnostic challenges, particularly in regions with endemic infections.
- Human T-lymphotropic virus type I (HTLV-I) is a known cause of neurological disorders like HTLV-I associated myelopathy (HAM).
Purpose of the Study:
- To investigate the prevalence of HTLV-I infection in patients with chronic neurological diseases in Rio de Janeiro, Brazil.
- To compare clinical features of Brazilian patients with HTLV-I infection to those reported internationally.
Main Methods:
- Serum and cerebrospinal fluid samples were analyzed for HTLV-I antibodies.
- Fifty patients with chronic neurological diseases were screened.
- Clinical data of antibody-positive patients were reviewed.
Main Results:
- Fifteen of 27 patients with progressive paraparesis of unknown origin tested positive for HTLV-I antibodies in serum.
- Ten of 13 patients studied also had HTLV-I antibodies in their cerebrospinal fluid.
- Clinical presentation in Brazilian patients was similar to international HAM cases, with a notable proportion of white patients.
Conclusions:
- HTLV-I is a significant etiological factor in progressive paraparesis of obscure origin in Brazil.
- The findings support the international recognition of HTLV-I associated myelopathy, even in diverse ethnic populations.
- Further research is warranted to understand the full spectrum of HTLV-I neurological impact in Brazil.
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