The use of nonsteroidal anti-inflammatory drugs has been suggested to have a chemopreventive effect against colon carcinoma, through the inhibition of cyclooxygenases 1 and 2, in patients with familial adenomatous polyposis and in animal models. Acarbose, an alpha-glycosidase inhibitor, may also be chemopreventive. In order to examine the effects of these drugs we employed APC gene knockout mice randomized into 3 groups, one for treatment with piroxicam (0.05% concentration in drinking water), one for acarbose (0.04% concentration in food) and another for the control. After 14 weeks of treatment, mice were killed for quantitation of gastric and intestinal adenomas. Tumor multiplicity in the whole gastrointestinal tract decreased from 33.89± ± ± ±13.07 Epidemiological studies indicate a marked decrease in the relative risk (40-50%) of colorectal cancer among continuous users of nonsteroidal anti-inflammatory drugs (NSAIDs) compared to those who do not take these agents.
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