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Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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T helper1/T helper2 cells and resistance/susceptibility to Leishmania infection : is this paradigm still relevant?

Alexander, J. and Brombacher, F. (2012) T helper1/T helper2 cells and resistance/susceptibility to Leishmania infection : is this paradigm still relevant? Frontiers in Immunology, 3 (APR).

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Work in large part on Leishmania major in the 1980s identified two distinct apparently counter-regulatory CD4 T cell populations, T helper (h)1 and Th2, that controlled resistance/susceptibility to infection respectively. However, the generation of IL-4mice in the 1990s questioned the paramount role of thisTh2 archetypal cytokine in the non-healing response to Leishmania infection. The more recent characterization of CD4 T cell regulatory populations and further effector CD4 T helper populations, Th17, Th9, and T follicular (f)h cells as well as the acknowledged plasticity in T helper cell function has further added to the complexity of host pathogen interactions.These interactions are complicated by the multiplicity of cells that respond to CD4 T cell subset signatory cytokines, as well as the diversity of Leishmania species that are often subject to significantly different immuneregulatory controls. In this article we review current knowledge with regard to the role of CD4 T cells and their products during Leishmania infection. In particular we update on our studies using conditional IL-4Rα gene-deficient mice that have allowed dissection of the cell interplay dictating the disease outcomes of the major Leishmania species infecting humans.