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- W2003119155 abstract "Cyclooxygenase (COX) enzyme-dependent arachidonic acid metabolites occupy key positions in important physiologic processes such as immunity, reproduction, and vascular integrity. Large retrospective and prospective population-based studies have shown that the use of both nonselective, nonsteroidal anti-inflammatory drugs and selective COX-2 inhibitors are associated with decreased colorectal cancer incidence and mortality rate. A majority of animal studies provide strong evidence that prevention of intestinal tumors is more efficiently accomplished by COX-2 selective inhibition rather than by COX-1 suppression. The inducible COX-2 isoform is overexpressed in colorectal tissues and is associated with critical events of tumorigenesis. COX-2 expression correlates with expression of angiogenic factors and new blood vessel formation. Inhibition of COX-2 favors apoptosis and causes a dose-dependent decline of tumor growth and metastasis in these models. These data, together with the fact that COX-2 inhibitors cause less toxic side effects compared with nonselective nonsteroidal anti-inflammatory drugs, render these new compounds promising candidates in chemoprevention and treatment of colorectal cancer. Results from initial clinical trials suggest that COX-2 inhibitors may be able to reduce the polyp burden in patients with familial polyposis coli. However, further clinical studies are needed to evaluate whether COX-2 inhibition will be effective in all types of colorectal tumor tissues. This is especially true for neoplastic lesions that express COX-2 at a lower level (eg, hereditary nonpolyposis colorectal cancer) and for colorectal tumors of patients with inflammatory bowel disease. In summary, COX-2 inhibitors represent a new and very promising group of chemotherapeutic agents with great potential for both colorectal cancer prevention and treatment. Semin Oncol 30 (suppl 6):10-16. © 2003 Elsevier Inc. All rights reserved." @default.
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- W2003119155 date "2003-06-01" @default.
- W2003119155 modified "2023-10-18" @default.
- W2003119155 title "Cyclooxygenase-2 inhibitors in colorectal cancer" @default.
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- W2003119155 doi "https://doi.org/10.1016/s0093-7754(03)70020-7" @default.
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