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- W2081002915 abstract "Extracellular superoxide dismutase (EC-SOD) is primarily a tissue enzyme and has been implicated in the modulation of inflammatory response. The biological role of EC-SOD in skin, however, has rarely been investigated. In this study, we aim to explore the effects of EC-SOD on the inflammatory response in skin by evaluating the contact hypersensitivity response (CHS) in EC-SOD transgenic mice. Transgenic mice with skin-specific expression of EC-SOD were sensitized and challenged with 2,4,6-trinitro-1-chlorobenzene (TNCB), followed by measurement of ear swelling. EC-SOD transgenic mice showed significantly reduced CHS responses compared with wild-type mice. Histological evaluation of the challenged ears of EC-SOD transgenic mice revealed diminished infiltration of inflammatory cells with a failure to induce expression of inflammatory cytokines, such as tumor necrosis factor-α and IFN-γ, on sensitization and challenge with TNCB. Furthermore, Langerhans cell migration to lymph nodes was impaired in EC-SOD transgenic mice. These results indicate that EC-SOD downregulates CHS through inhibition of the inflammatory response, suggesting a possible therapeutic regimen in inflammatory skin diseases. Extracellular superoxide dismutase (EC-SOD) is primarily a tissue enzyme and has been implicated in the modulation of inflammatory response. The biological role of EC-SOD in skin, however, has rarely been investigated. In this study, we aim to explore the effects of EC-SOD on the inflammatory response in skin by evaluating the contact hypersensitivity response (CHS) in EC-SOD transgenic mice. Transgenic mice with skin-specific expression of EC-SOD were sensitized and challenged with 2,4,6-trinitro-1-chlorobenzene (TNCB), followed by measurement of ear swelling. EC-SOD transgenic mice showed significantly reduced CHS responses compared with wild-type mice. Histological evaluation of the challenged ears of EC-SOD transgenic mice revealed diminished infiltration of inflammatory cells with a failure to induce expression of inflammatory cytokines, such as tumor necrosis factor-α and IFN-γ, on sensitization and challenge with TNCB. Furthermore, Langerhans cell migration to lymph nodes was impaired in EC-SOD transgenic mice. These results indicate that EC-SOD downregulates CHS through inhibition of the inflammatory response, suggesting a possible therapeutic regimen in inflammatory skin diseases. contact hypersensitivity extracellular superoxide dismutase Langerhans cells reactive oxygen species" @default.
- W2081002915 created "2016-06-24" @default.
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- W2081002915 date "2007-08-01" @default.
- W2081002915 modified "2023-10-01" @default.
- W2081002915 title "EC-SOD Suppresses Contact Hypersensitivity in Mouse Skin by Impairing Langerhans Cell Migration" @default.
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- W2081002915 doi "https://doi.org/10.1038/sj.jid.5700802" @default.
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