title: Phenotypically activated gammadelta T lymphocytes in the peripheral blood of patients with tuberculosis.
abstract: Surface molecules with the potential relevance for resistance against Mycobacterium tuberculosis were investigated. The expression of lymphocyte function antigen-1, very late antigen (VLA)-4, l-selectin, intercellular adhesion molecule (ICAM)-1, major histocompatibility complex class II, Fas, and CD40 on alphabeta T cells, gammadelta T cells, NK cells, and monocytes of healthy donors and patients with tuberculosis were analyzed. A high activation status of gammadelta T cells and increased levels of soluble ICAM-1 in plasma of patients with tuberculosis versus healthy individuals was detected. Tuberculosis patients with and without an underlying systemic disease could be segregated by differential expression of VLA-4 and ICAM-1 on gammadelta T cells and on monocytes. The composition of peripheral blood mononuclear cells varied slightly, whereas the proportion of monocytes decreased significantly in patients with tuberculosis, compared with healthy controls. The activation phenotype of peripheral gammadelta T cells in patients with tuberculosis emphasizes the role of these T cells in controlling the inflammatory process during tuberculosis and perhaps other microbial infections.
authors.affiliation: Max-Planck-Institute for Infection Biology, Department of Immunology, 10117 Berlin, Germany. Kaufmann@mpiib-berlin.mpg.de
authors.forename: S I
authors.initials: SI
authors.lastname: Behr-Perst
authors.forename: M E
authors.initials: ME
authors.lastname: Munk
authors.forename: T
authors.initials: T
authors.lastname: Schaberg
authors.forename: T
authors.initials: T
authors.lastname: Ulrichs
authors.forename: R J
authors.initials: RJ
authors.lastname: Schulz
authors.forename: S H
authors.initials: SH
authors.lastname: Kaufmann
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019013:CD40 Antigens / Q000032:analysis; D005260:Female; D000949:Histocompatibility Antigens Class II / Q000032:analysis; D006801:Humans; D039041:Integrin alpha4beta1; D016023:Integrins / Q000032:analysis; D018799:Intercellular Adhesion Molecule-1 / Q000032:analysis*; D019041:L-Selectin / Q000032:analysis; D008213:Lymphocyte Activation; D016169:Lymphocyte Function-Associated Antigen-1 / Q000032:analysis; D008297:Male; D008875:Middle Aged; D009000:Monocytes / Q000382:microbiology; D016692:Receptors, Antigen, T-Cell, gamma-delta; D016201:Receptors, Lymphocyte Homing / Q000032:analysis; D016176:T-Lymphocyte Subsets / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*; D014397:Tuberculosis, Pulmonary / Q000150:complications / Q000276:immunology*; D019014:fas Receptor / Q000032:analysis
chemical_list: D019013:CD40 Antigens; D000949:Histocompatibility Antigens Class II; D039041:Integrin alpha4beta1; D016023:Integrins; D016169:Lymphocyte Function-Associated Antigen-1; D016692:Receptors, Antigen, T-Cell, gamma-delta; D016201:Receptors, Lymphocyte Homing; D019014:fas Receptor; D018799:Intercellular Adhesion Molecule-1; D019041:L-Selectin