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

Other Title
Effects of fermented germinated brown rice on DMH/DSS-induced colorectal carcinogenesis in F344 rats
Type
thesis
Date Issued
2015-06-10
Author(s)
林函霈
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:潘敏雄;商惠芳
中文關鍵字:發酵發芽糙米;大腸癌;異常腺窩病灶;細胞凋亡
英文關鍵字:Fermented germinated brown rice;Colon cancer;Aberrant crypt foci (ACF);Apopotsis
Abstract
大腸癌於台灣癌症發生率中連續七年蟬連第一位。本研究室先前的研究顯示,含嗜酸乳酸桿菌(Lactobacillus acidophilus)的優酪乳及發芽糙米(germinated brown rice, GBR)可降低大腸癌前期病變aberrant crypt foci(ACF)的形成。本研究利用發芽糙米經嗜酸乳酸桿菌發酵後,探討不同劑量的發酵發芽糙米(fermented GBR, FGBR)對大鼠大腸癌前期病變之影響。將F344大鼠分為6組:B(AIN-93G)、D(AIN-93G)、G(10% GBR)、LF(2.5% FGBR)、MF(5% FGBR)及HF(10% FGBR),除B組外以1,2-dimethylhydrazine(DMH)/ dextran sodium sulfate(DSS)誘導大腸癌發生,於實驗期10週後將大鼠犧牲。結果顯示,LF組的異常腺窩病灶(ACF)及異常腺窩(aberrant crypt, AC)總數顯著低於D組。G、LF、MF和HF組之大腸黏膜nuclear factor-kappa B(NF-κB)與cyclooxygenase-2(COX-2)蛋白質表現量及血清中tumor necrosis factor-α(TNF-α)、interleukin-1β(IL-1β)、interleukin-6(IL-6)濃度顯著低於D組。LF組之Bcl-2-associated X protein(Bax)及cleaved caspase-3蛋白質表現量顯著高於D組。LF組之B-cell lymphoma-2(Bcl-2)及proliferating cell nuclear antigen(PCNA)蛋白質表現量顯著低於D組。推測2.5%的發酵發芽糙米可能透過活化細胞凋亡路徑來抑制大腸癌前期病變的形成。
URI
https://203.71.86.71/handle/123456789/57087

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