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Depression: 21st Century Solutions + The Dark Side of Wheat

Abstract Title:

Dietary tricin suppresses inflammation-related colon carcinogenesis in male Crj: CD-1 mice.

Abstract Source:

Cancer Prev Res (Phila Pa). 2009 Dec;2(12):1031-8. Epub 2009 Nov 24. PMID: 19934339

Abstract Author(s):

Takeru Oyama, Yumiko Yasui, Shigeyuki Sugie, Mamoru Koketsu, Kunitomo Watanabe, Takuji Tanaka

Article Affiliation:

Department of Oncologic Pathology, Kanazawa Medical University, Ishikawa 920-0293, Japan.

Abstract:

The flavone 4',5,7-trihydroxy-3',5'-dimethoxyflavone (tricin) present in rice, oats, barley, and wheat exhibits antigrowth activity in several human cancer cell lines and anti-inflammatory potential. However, the chemopreventive activity has not yet been elucidated in preclinical animal models of colorectal cancer. This study was designed to determine whether dietary tricin exerts inflammation-associated colon carcinogenesis induced by azoxymethane and dextran sulfate sodium in mice. Male Crj: CD-1 mice were initiated with a single i.p. injection of azoxymethane (10 mg/kg body weight) and followed by a 1-week exposure to dextran sulfate sodium (1.5%, w/v) in drinking water to induce colonic neoplasms. They were then given the experimental diet containing 50 or 250 ppm tricin. The experiment was terminated at week 18 to determine the chemopreventive efficacy of tricin. In addition, the effects of dietary tricin on the expression of several inflammatory cytokines, including tumor necrosis factor (TNF)-alpha, were assayed. The development of colonic adenomas and adenocarcinomas was significantly reduced by feeding with 50 and 250 ppm tricin, respectively. Dietary tricin also significantly reduced the proliferation of adenocarcinoma cells as well as the numbers of mitoses/anaphase bridging in adenocarcinoma cells. The dietary administration with tricin significantly inhibited the expression of TNF-alpha in the nonlesional cypts. Our findings that dietary tricin inhibits inflammation-related mouse colon carcinogenesis by suppressing the expression of TNF-alpha in the nonlesional cyrpts and the proliferation of adenocarcinomas suggest a potential use of tricin for clinical trials of colorectal cancer chemoprevention.

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Sayer Ji
Founder of GreenMedInfo.com

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Depression: 21st Century Solutions + The Dark Side of Wheat

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