title: Piroxicam accelerates development of colitis in T-cell receptor alpha chain-deficient mice.
abstract: T-cell receptor alpha chain (TCR.alpha)-deficient mice spontaneously develop colitis that resembles human ulcerative colitis; however, the incidence varies among individuals and takes place lately in the life. We have demonstrated that piroxicam induces colitis in non-colitic TCR.alpha-deficient mice, but not wild-type mice, within 14 days. The histological features and cytokine profiles were similar to those seen in spontaneous colitis in TCR.alpha-deficient mice. Dexamethasone prevented piroxicam-induced colitis concurrent with the suppression of interleukin (IL)-1beta, IL-17, tumor necrosis factor alpha and interferon gamma. This modified model of colitis could be useful for the evaluation of potential therapeutics for ulcerative colitis.
authors.affiliation: Discovery Biology Research, Nagoya Laboratories, Pfizer Global Research and Development, Pfizer Inc., Taketoyo, Aichi, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Nishiyori
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Nagakura
authors.forename: Katsuomi
authors.initials: K
authors.lastname: Ichikawa
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000009:adverse effects*; D003093:Colitis, Ulcerative / Q000139:chemically induced / Q000276:immunology / Q000473:pathology*; D003907:Dexamethasone / Q000494:pharmacology; D005938:Glucocorticoids / Q000494:pharmacology; D007371:Interferon-gamma / Q000276:immunology; D020381:Interleukin-17 / Q000276:immunology; D053583:Interleukin-1beta / Q000276:immunology; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D010894:Piroxicam / Q000009:adverse effects*; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000172:deficiency* / Q000235:genetics / Q000276:immunology*; D014409:Tumor Necrosis Factor-alpha / Q000276:immunology
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D005938:Glucocorticoids; D020381:Interleukin-17; D053583:Interleukin-1beta; D016693:Receptors, Antigen, T-Cell, alpha-beta; D014409:Tumor Necrosis Factor-alpha; D010894:Piroxicam; D003907:Dexamethasone; D007371:Interferon-gamma