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- 저자 : Howard T. Thaler (검색결과 1 건)
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Naoto Kurihara,Kunhua Fan,Howard T. Thaler,Kan Yang,Martin Lipkin 한국식품영양과학회 2008 Journal of medicinal food Vol.11 No.2
We previously reported hyperproliferation and hyperplasia in C57Bl/6 mouse mammary gland after feeding aWestern-style diet (WD); these findings decreased after supplementing WD with increased calcium and vitamin D3. We nowagain fortified WD with increased calcium and vitamin D3 from two sources: (1) a food source, calcium- and vitamin D3-en-riched yogurt (WDy diet) or (2) adding calcium and vitamin D3 directly to WD (WDCaD diet). After 6 months of feeding thenumber of mammary ducts was higher in mice consuming WD compared to WDy (216.0 vs. 202.7, P. .05) and WDCaD(216.0 vs. 194.9, P. .001). The percentage of small ducts increased in WD compared to AIN-76A controls (23.3% vs. 17.4%)but was lower in the WDy (17.1%) and WDCaD (14.8%) groups. WD mice had higher numbers of epithelial cells per ductthan WDy (33.2 vs. 27.4, P. .001) and WDCaD (33.2 vs. 27.8, P. .001) mice, and AIN-76A-fed mice had higher numbersthan WDy (31.1 vs. 27.4, P. .005) or WDCaD (31.1 vs. 27.8, P. .01) mice. Mitotic index was higher in WD than in WDCaD mice (0.0020 vs. 0.0009, P. .001). Thus, small mammary gland ductules and mitosis increased after feeding WDand decreased after supplementing the diets with increased calcium and vitamin D3, administered either in a dairy food (yo-gurt) or directly as calcium carbonate plus vitamin D3 in WD, suggesting further study of these nutrients for their possiblerelationship to breast cancer prevention.
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