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高膳食纤维饮食同部分癌肿发病率之间呈负相关关系。其可能机制:⑴膳食纤维可以吸收水分、稀释致癌物质浓度、促进排出;⑵膳食纤维可在结肠内酵解产生短链脂肪酸———丁酸,可以调节细胞凋亡、影响原癌基因表达,以及发挥促进正常细胞增殖、抑制肿瘤细胞生长的作用。膳食纤维还有利于化疗引起的肠道炎症恢复。尚需进一步研究了解膳食纤维在体内的作用机制。
High dietary fiber diet with the incidence of cancer was negatively correlated. Its possible mechanism: ⑴ dietary fiber can absorb water, dilute the concentration of carcinogens to promote discharge; ⑵ dietary fiber can be produced in the colon glycolysis short-chain fatty acids - butyric acid, can regulate apoptosis, affecting proto-oncogene expression, As well as play a role in promoting normal cell proliferation and inhibiting tumor cell growth. Dietary fiber is also beneficial to the recovery of intestinal inflammation caused by chemotherapy. Further study is needed to understand the mechanism of action of dietary fiber in the body.