Research Articles

T cell receptor Vbeta gene usage in Thai children with dengue virus infection

T lymphocyte activation during dengue is thought to contribute to the pathogenesis of dengue hemorrhagic fever (DHF). We examined the T cell receptor Vbeta gene usage by a reverse transcriptase-polymerase chain reaction assay during infection and after recovery in 13 children with DHF and 13 children with dengue fever (DF). There was no deletion of specific Vbeta gene families. We detected significant expansions in usage of single Vbeta families in six subjects with DHF and three subjects with DF over the course of infection, but these did not show an association with clinical diagnosis, viral serotype, or HLA alleles. Differences in Vbeta gene usage between subjects with DHF and subjects with DF were of borderline significance. These data suggest that the differences in T cell activation in DHF and DF are quantitative rather than qualitative and that T cells are activated by conventional antigen(s) and not a viral superantigen.

This article has been cited by other articles:

				R. Salerno-Goncalves, R. Wahid, and M. B. Sztein Immunization of Volunteers with Salmonella enterica Serovar Typhi Strain Ty21a Elicits the Oligoclonal Expansion of CD8+ T Cells with Predominant V{beta} Repertoires Infect. Immun., June 1, 2005; 73(6): 3521 - 3530. [Abstract] [Full Text] [PDF]

				J.-S. Lin and B. A. Wu-Hsieh Functional T cells in primary immune response to histoplasmosis Int. Immunol., November 1, 2004; 16(11): 1663 - 1673. [Abstract] [Full Text] [PDF]