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Abstract Title:

Preventive Effects of Curcumin on the Development of Azoxymethane-Induced Colonic Preneoplastic Lesions in Male C57BL/KsJ-db/db Obese Mice.

Abstract Source:

Nutr Cancer. 2012 Jan ;64(1):72-9. Epub 2011 Dec 15. PMID: 22172229

Abstract Author(s):

Masaya Kubota, Masahito Shimizu, Hiroyasu Sakai, Yoichi Yasuda, Daishi Terakura, Atsushi Baba, Tomohiko Ohno, Hisashi Tsurumi, Takuji Tanaka, Hisataka Moriwaki

Article Affiliation:

a Department of Internal Medicine , Gifu University Graduate School of Medicine , Gifu , Japan.

Abstract:

Obesity-related metabolic abnormalities include a state of chronic inflammation and adipocytokine imbalance, which increase the risk of colon cancer. Curcumin, a component of turmeric, exerts both cancer preventive and antiinflammatory properties. Curcumin is also expected to have the ability to reverse obesity-related metabolic derangements. The present study examined the effects of curcumin on the development of azoxymethane (AOM)-induced colonic premalignant lesions in C57BL/KsJ-db/db (db/db) obese mice. Feeding with a diet containing 0.2% and 2.0% curcumin caused a significant reduction in the total number of colonic premalignant lesions compared with basal diet-fed mice. The expression levels of tumor necrosis factor-α, interleukin-6, and cyclooxygenase-2 (COX-2) mRNAs on the colonic mucosa of AOM-treated mice were significantly decreased by curcumin administration. Dietary feeding with curcumin markedly activated AMP-activated kinase, decreased the expression of COX-2 protein, and inhibited nuclear factor-κB activity on the colonic mucosa of AOM-treated mice. Curcumin also increased the serum levels of adiponectin while conversely decreasing the serum levels of leptin and the weights of fat. In conclusion, curcumin inhibits the development of colonic premalignant lesions in an obesity-related colorectal carcinogenesis model, at least in part, by attenuating chronic inflammation and improving adipocytokine imbalance. Curcumin may be useful in the chemoprevention of colorectal carcinogenesis in obese individuals.

Study Type : Animal Study

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Sayer Ji
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