title: TNF alpha, IL-1 and O2- release by macrophages do not correlate with the anti-mouse hepatitis virus 3 effect induced by interferon gamma.
abstract: Macrophages have been described to be important in determining the resistance of A/J mice or the susceptibility of BALB/c mice to the experimental infection with Mouse Hepatitis Virus 3 (MHV3). The interferon gamma (IFN gamma) activation of A/J and BALB/c mouse macrophages was shown to partially restrict the MHV3 replication only in macrophages from the resistant A/J mice. The activation by IFN gamma and/or infection with MHV3 showed that BALB/c mouse macrophages were capable of releasing tumor necrosis factor alpha (TNF alpha), interleukin 1 (IL-1) and anion superoxide (O2-), and A/J mouse macrophages were capable of releasing TNF alpha and IL-1 but not O2-. Comparable amounts of TNF alpha or IL-1 were released by IFN gamma-activated A/J or BALB/c mouse macrophages. Following MHV3 infection or IFN gamma activation and MHV3 infection, BALB/c mouse macrophages were always capable of releasing higher amounts of TNF alpha, IL-1 or O2- than A/J mouse macrophages, which correlated with their susceptibility to the virus infection. The data indicate that the anti-MHV3 effect induced by IFN gamma in A/J mouse macrophages is not related to the studied extrinsic activities of these cells.
authors.affiliation: Instituto Butantan, Laboratorio de Imunologia Viral, S. Paulo, Brasil.
authors.forename: M A
authors.initials: MA
authors.lastname: Lucchiari
authors.forename: M
authors.initials: M
authors.lastname: Modolell
authors.forename: R C
authors.initials: RC
authors.lastname: Vassão
authors.forename: C A
authors.initials: CA
authors.lastname: Pereira
mesh_terms: D000818:Animals; D000838:Anions; D002478:Cells, Cultured; D004198:Disease Susceptibility; D006524:Hepatitis, Viral, Animal / Q000276:immunology / Q000382:microbiology; D007371:Interferon-gamma / Q000276:immunology*; D007375:Interleukin-1 / Q000378:metabolism*; D008264:Macrophages / Q000276:immunology / Q000378:metabolism*; D051379:Mice; D008807:Mice, Inbred BALB C; D006517:Murine hepatitis virus / Q000276:immunology*; D013481:Superoxides / Q000378:metabolism*; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism*; D014779:Virus Replication
chemical_list: D000838:Anions; D007375:Interleukin-1; D014409:Tumor Necrosis Factor-alpha; D013481:Superoxides; D007371:Interferon-gamma