|dc.contributor.author||Sun Duck Jeon||-|
|dc.contributor.author||Jong Seok Lim||-|
|dc.contributor.author||Chang Kiu Moon||-|
|dc.description.abstract||The effects of carbofuran (2,3-dihydro-2,2-dimethyl-7-benzo-furanol N-methylcarbamate) on the functions of T cells in splenocytes and peritoneal macrophages were examined in view of T-cell-mediated immune response (CMIR) in male C57BL/6 mice. Intraperitoneal administration of carbofuran (0.075, 0.15 and 0.3 mg/kg body weight) resulted in significant suppression of delayed type hypersensitivity (DTH), indicating that it caused the suppression of CMIR. Carbofuran decreased Concanavalin A (Con A)- and alloantigen-induced proliferation, and interleukin (IL)-2 production of splenocytes. In vitro addition of rIL-2 could not completely restore the suppressed T-cell proliferation, and IL-2-induced proliferation of Con A-activated splenocytes was also suppressed, which implied that carbofuran caused defects in IL-2 production and responsiveness of splenocytes to IL-2, leading to the suppression of T-cell proliferation. Con A-induced production of interferon-γ (IFN-γ) was significantly suppressed by carbofuran, while that of IL-4 was not affected. The production of transforming growth factor-β from splenocytes was also significantly inhibited by carbofuran. Judging from these results, carbofuran might directly suppress the cytokine production in T helper 1 (Th1) cells. In addition, IFN-γ-induced production of nitric oxide (NO) in macrophages was also inhibited by carbofuran, which might be one of the important mechanisms of carbofuran-induced CMIR suppression in mice. Collectively, the present study suggests that carbofuran might suppress CMIR through the suppression of T-cell responsiveness, IFN-γ production in Th1 cells, and NO generation in macrophages.||-|
|dc.title||Carbofuran suppresses T-cell-mediated immune responses by the suppression of T-cell responsiveness, the differential inhibition of cytokine production, and NO production in macrophages||-|
|dc.title.alternative||Carbofuran suppresses T-cell-mediated immune responses by the suppression of T-cell responsiveness, the differential inhibition of cytokine production, and NO production in macrophages||-|
|dc.identifier.bibliographicCitation||Toxicology Letters, vol. 119, no. 2, pp. 143-155||-|
|dc.subject.keyword||cell-mediated immune responses||-|
|dc.subject.keyword||delayed type hypersensitivity||-|
|dc.subject.keyword||mixed lymphocyte reaction||-|
|dc.subject.local||cell-mediated immune responses||-|
|dc.subject.local||delayed type hypersensitivity||-|
|dc.subject.local||mixed lymphocyte reaction||-|
|dc.subject.local||Nitric oxide (NO)||-|
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