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Published byLucinda Bailey Modified over 9 years ago
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Effects of dietary phenolics on the formation of carcinogenic heterocyclic amines 膳食中的多酚類物質對致癌的雜環胺 形成的影響 Mingfu Wang School of Biological Sciences
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Food components and attributes Texture Appearance Flavor Nutritional value Health benefits proteins lipids Carbohydrates Fiber Minor components Maillard reaction Lipid peroxidation Caramelization Enzymatic browning
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Introduction Formed even during household cooking Western diets have higher HA contents ( ) Glucose Potent bacterial mutagens Some are carcinogenic in animal models Epidemiological evidence of increased cancer risks PhIP 雜環胺 致基因突變 致癌
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Naringenin % inhibition in fried beef PhIP 74 MeIQx 63 4,8-DiMeIQx 67 Total HAs 70 Tea and cinnamon polyphenols Phenolic acids Naringenin 柚皮素 Identify potent inhibitors of heterocyclic amine formation 柚皮,橘皮,番茄醬 桂皮
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Postulated inhibitory mechanism of naringenin in PhIP formation Carcinogen 致癌物 Non-carcinogen 阻斷形成 防癌化合物 Cpd2 誘導形成
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Cpd2 Suppress Tumor Growth in vivo V. control 10 mg/kg 40 mg/kg Cpd2 induce autophagy LC3/LC3-II analysis LC3-II Control Autophagy may be an important pathway leading to cell death LC3-I 18kDa 16kDa Negat. Cpd1 Cpd2 Post. Control 24 hr 48 hr 24 hr 48 hr Control Beta- actin Cpd2 誘導癌細胞自體吞噬
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