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  5. 發芽糙米對DMH/DSS誘發F344大鼠大腸癌形成之影響
 
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發芽糙米對DMH/DSS誘發F344大鼠大腸癌形成之影響

Other Title
Effects of germinated brown rice on DMH/DSS-induced colon carcinogenesis in F344 rats
Type
thesis
Date Issued
2014-06-24
Author(s)
郭安綺
Advisor
施純光
Subjects
系所名稱:保健營養學研究所
Description
學位別:碩士
語文別:中文
指導教授:施純光
共同指導教授:
口試委員:顏聰榮;簡銘賢
中文關鍵字:發芽糙米;大腸癌;異常腺窩病灶;發炎
Abstract
大腸癌為全球最常見癌症之第三名,腸道慢性且反覆發炎引起腸道損傷是造成大腸癌的重要原因。本研究以1,2-dimethylhydrazine(DMH)/dextran sodium sulfate(DSS)誘發大鼠大腸癌模擬發炎相關大腸癌(colitis-associated colorectal cancer),探討餵食精白米、糙米及發芽糙米對大腸癌前期病變之預防效果。本研究將雄性Fisher 344大鼠分為十組:正常組(B)、負控制組(NC)、正控制組(PC)、40%精白米組(PR)、10%糙米組(低劑量糙米組,LB)、20%糙米組(中劑量糙米組,MB)、40%糙米組(高劑量糙米組,HB)、10%發芽糙米組(低劑量發芽糙米組,LG)、20%發芽糙米組(中劑量發芽糙米組,MG)及40%發芽糙米組(高劑量發芽糙米組,HG),經過15週的實驗期後,發現低劑量發芽糙米顯著減少異常腺窩病灶(aberrant crypt foci,ACF)數、含有一個異常腺窩之ACF數及小型ACF數。精白米、糙米及發芽糙米皆顯著降低大腸黏膜nuclear factor-kappa B(NF-κB)及cycloxygenase-2(COX-2)蛋白表現量及血清中tumor necrosis factor-α(TNF-α)濃度,糙米及低劑量發芽糙米顯著降低血清interleukin-1β(IL-1β)及interleukin-6(IL-6)濃度。以上結果顯示低劑量發芽糙米具有預防大腸癌前期病變的效果,其作用機制可能與抑制發炎反應有關。
URI
https://203.71.86.71/handle/123456789/56740

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