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Methods and Findings
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Methods Find Exp Clin Pharmacol 1999, 21(2): 99
ISSN 0379-0355
Copyright 1999 Clarivate
CCC: 0379-0355
DOI: 10.1358/mf.1999.21.2.529236
Lack of beneficial effect of COX-2 inhibitors in an experimental model of colitis
Lesch, C.A., Kraus, E.R., Sanchez, B., Gilbertson, R., Guglietta, A.
Expression of the COX-2 enzyme has been reported in animal models of inflammatory bowel disease (IBD) as well as in patients affected by ulcerative colitis and Crohn's disease. Recently, selective inhibitors of COX-2 have become available. In this study we have evaluated three highly selective COX-2 inhibitors, NS-398, SC-58125 and PD-138387, on the trinitro-benzene sulfonic acid (TNBS) model of colitis in rats. Daily oral administration of the three compounds evaluated up to a dose of 100 mg/kg failed to significantly modify any of the parameters evaluated. Our data show that despite their potent extraintestinal antiinflammatory activity, COX-2 inhibitors do not seem to have any beneficial effect in TNBS colitis and raise the question whether this therapeutic approach would be beneficial in patients with IBD.

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