Abstract:
BACKGROUND:Much recent effort has been made to produce selective inhibitors of cyclo-oxygenase-2 (COX-2) in the belief that these will lack the gastrointestinal damaging effects of traditional non-steroidal anti-inflammatory drugs (NSAIDs). Inflammatory bowel disease is associated with increased local production of prostanoids. These prostanoids, particularly PGE2 and PGI2, may well be protective as inflammatory bowel disease is aggravated by NSAID use. AIM:To examine the effects of a traditional NSAID and a highly selective COX-2 inhibitor on the production of these prostanoids in human inflammatory bowel disease. METHODS:Colonic mucosal biopsies were obtained from patients undergoing routine colonoscopy and biopsy for diagnostic or surveillance purposes. Biopsies were incubated in culture medium containing 10% foetal calf serum and antibiotics, plus test drugs or vehicle for 24 h, after which time the medium was removed and the content of PGE2, PGI2 (measured as 6 keto-PGF1alpha) and thromboxane (Tx) A2 (measured as TxB2) determined. RESULTS:Biopsies obtained from diseased colonic mucosa produced significantly more PGE2, PGI2 and thromboxane A2 than did controls (for example, PGE2: ulcerative colitis, 4.17+/-1.06; Crohn's disease, 3.97+/-1.66; control, 0.12 +/-0.13 ng/mL, n = 8-12). These increases were inhibited to a similar extent by either a highly selective COX-2 inhibitor (L-745,337) or a traditional non-selective NSAID (indomethacin). CONCLUSIONS:Until selective COX-2 inhibitors have been assessed adequately in human inflammatory bowel disease, these compounds should not be assumed to be safe for the gastrointestinal tract in inflammatory bowel disease.
journal_name
Aliment Pharmacol Therjournal_title
Alimentary pharmacology & therapeuticsauthors
McCartney SA,Mitchell JA,Fairclough PD,Farthing MJ,Warner TDdoi
10.1046/j.1365-2036.1999.00585.xsubject
Has Abstractpub_date
1999-08-01 00:00:00pages
1115-7issue
8eissn
0269-2813issn
1365-2036pii
apt585journal_volume
13pub_type
杂志文章abstract::Gastro-oesophageal reflux disease (GERD), manifesting with symptoms including heartburn and regurgitation, affects people during both daytime and nocturnal hours. Night-time GERD has been reported to have a greater impact on a patient's life than daytime GERD due to prolonged oesophageal acid exposure time per reflux ...
journal_title:Alimentary pharmacology & therapeutics
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doi:10.1111/j.1365-2036.2004.02237.x
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pub_type: 杂志文章,多中心研究,随机对照试验
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journal_title:Alimentary pharmacology & therapeutics
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更新日期:2004-09-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
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更新日期:2008-10-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
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