behavior/neurological
• in mice treated with diphtheria toxin following injection of carrageenan
• treatment with dexamethasone does not prevent carrageenan-triggered inflammatory-related mechanical hypersensitivity
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• following injection of carrageenan, female and male mice treated with diphtheria toxin exhibit failure to resolve inflammatory mechanical hyperalgesia, thermal hyperalgesia, and posture changes related to inflammatory pain compared with control mice
• mice treated with diphtheria toxin fail to resolve complete Freunds adjuvant-induced transient inflammatory hyperalgesia unlike control mice
• treatment with dexamethasone does not prevent carrageenan-triggered inflammatory-related mechanical hypersensitivity
• macrophages lacking Il4ra, Stat6, or Cd200r1 fail to resolve inflammatory hyperalgesia
• however, carrageenan-induced inflammation is resolved in diphtheria toxin-treated mice and hyperalgesia was rescued by injection of in vitro differentiated bone marrow-derived macrophages and macrophages differentiated with IL-4
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• in mice treated with diphtheria toxin following injection of carrageenan
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