{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T10:05:50Z","timestamp":1792058750050,"version":"4.4.0"},"reference-count":89,"publisher":"American Physiological Society","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American Journal of Physiology-Gastrointestinal and Liver Physiology"],"published-print":{"date-parts":[[2004,7]]},"abstract":"<jats:p>Patients with ulcerative colitis and Crohn's disease are at increased risk for developing colorectal cancer. To date, no known genetic basis has been identified to explain colorectal cancer predisposition in these inflammatory bowel diseases. Instead, it is assumed that chronic inflammation is what causes cancer. This is supported by the fact that colon cancer risk increases with longer duration of colitis, greater anatomic extent of colitis, the concomitant presence of other inflammatory manifestations such as primary sclerosing cholangitis, and the fact that certain drugs used to treat inflammation, such as 5-aminosalicylates and steroids, may prevent the development of colorectal cancer. The major carcinogenic pathways that lead to sporadic colorectal cancer, namely chromosomal instability, microsatellite instability, and hypermethylation, also occur in colitis-associated colorectal cancers. Unlike normal colonic mucosa, however, inflamed colonic mucosa demonstrates abnormalities in these molecular pathways even before any histological evidence of dysplasia or cancer. Whereas the reasons for this are unknown, oxidative stress likely plays a role. Reactive oxygen and nitrogen species produced by inflammatory cells can interact with key genes involved in carcinogenic pathways such as p53, DNA mismatch repair genes, and even DNA base excision-repair genes. Other factors such as NF-\u03baB and cyclooxygenases may also contribute. Administering agents that cause colitis in healthy rodents or genetically engineered cancer-prone mice accelerates the development of colorectal cancer. Mice genetically prone to inflammatory bowel disease also develop colorectal cancer especially in the presence of bacterial colonization. These observations offer compelling support for the role of inflammation in colon carcinogenesis.<\/jats:p>","DOI":"10.1152\/ajpgi.00079.2004","type":"journal-article","created":{"date-parts":[[2004,6,11]],"date-time":"2004-06-11T18:43:19Z","timestamp":1086979399000},"page":"G7-G17","source":"Crossref","is-referenced-by-count":1031,"title":["Inflammation and Cancer IV. Colorectal cancer in inflammatory bowel disease: the role of inflammation"],"prefix":"10.1152","volume":"287","author":[{"given":"Steven H.","family":"Itzkowitz","sequence":"first","affiliation":[{"name":"Gastrointestinal Division, Mount Sinai School of Medicine, New York, New York 10029"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xianyang","family":"Yio","sequence":"additional","affiliation":[{"name":"Gastrointestinal Division, Mount Sinai School of Medicine, New York, New York 10029"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"24","reference":[{"key":"R1","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9440(10)64587-7"},{"key":"R2","unstructured":"Ahn B\n                      and Ohshima H.\n                      Suppression of intestinal polyposis in Apc(Min\/+) mice by inhibiting nitric oxide production.\n                      Cancer Res\n                      61\n                      : 8357\u20138360, 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