Immunological studies in tropical spastic paraparesis

✍ Scribed by Dr Steven Jacobson; MD Ajay Gupta; MD David Mattson; Elizabeth Mingioli; MD Dale E. McFarlin

• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 766 KB
• Volume: 27
• Category: Article
• ISSN: 0364-5134
• DOI: 10.1002/ana.410270209

✦ Synopsis

Tropical spastic paraparesis (TSP) and other chronic-progressive myelopathies have been clearly associated with increased serum and cerebrospinal fluid antibody titers to human T-lymphotropic virus type I (HTLV-I). However, little is known about the cellular immune function in TSP. In the present study, activated T lymphocytes were found in the peripheral blood of patients with TSP. Specifically, there were increased numbers of large CD3 + cells that also expressed HLA-DR and interleukin-2-receptor molecules. A significantly elevated spontaneous lymphoproliferative response was demonstrated in all patients tested. Generation of measles virus-specific cytotoxic T-cell response was reduced in 4 of 4 patients. This was similar to previous findings in patients with multiple sclerosis. However, unlike multiple sclerosis, reduced generation of cytotoxic T-cell response to influenza and mumps viruses was observed in 2 of 4 patients. These observations confirm further the strong association between TSP and an HTLV-I-like virus and suggest that the observed abnormalities of the cellular immune response in TSP are related to infection of lymphocytes by the retrovirus.