腸道是細菌們聚居體內的其中一道地方,而腸道細菌品種的變異,將有助大腸癌的形成。522Please respect copyright.PENANAZrkvNqmvfL
522Please respect copyright.PENANA0wSUdxvRAa
522Please respect copyright.PENANAZHtpDRIv8R
(圖2)糞便含有腸道的細菌,透過糞便移植(其中一方法為從口中灌入),人類腸道的細菌亦因而能夠寄居到老鼠腸道中。522Please respect copyright.PENANABAMOrZt2dl
522Please respect copyright.PENANARdwW206QOV
522Please respect copyright.PENANAdPkK0OXiPr
就此,有科學家嘗試將健康人士及腸癌病人的糞便移植到老鼠腸道中,探索腸道細菌對大腸癌的影響(Ref1)。522Please respect copyright.PENANASNqad16lqA
522Please respect copyright.PENANASJvsgrx25T
(圖3)從圖中可見,莫論是健康還是腸癌人士糞便組別也好,普通老鼠均不會出現腸癌。522Please respect copyright.PENANAyzoJZjvK3L
522Please respect copyright.PENANAsrXY4lfoR8
522Please respect copyright.PENANA6QRGsP09ie
但在天生容易生腸癌的老鼠中,移植腸癌人士糞便後所出現的腫瘤數量,明顯的比健康人士糞便組別為多。522Please respect copyright.PENANAgoWuUDjgCc
522Please respect copyright.PENANANsSvBX2Uoj
(圖4)同時,移植腸癌人士糞便後所出現的腫瘤,體積亦明顯的比健康人士糞便組別為大。522Please respect copyright.PENANArfqUBSTZlI
522Please respect copyright.PENANA2hKzsgYtik
522Please respect copyright.PENANAwd7rqJiLUI
而移植糞便後,兩組老鼠的腸道細菌品種亦有明顯分別。522Please respect copyright.PENANAPCcCGgwBRG
522Please respect copyright.PENANAoKlFDmcrFb
(圖5)重要的是,腸癌人士糞便中的某幾隻脂肪酸數量,亦明顯比健康人士糞便組別為少。522Please respect copyright.PENANAEp5CV2AKaW
522Please respect copyright.PENANABZNvXHkid4
522Please respect copyright.PENANAHToDLwTYA0
依照現時的理論,人體有部份的腸道細菌乃依靠消化食用纖維維生。522Please respect copyright.PENANAMBi50gsHQF
522Please respect copyright.PENANAM7C5SZ8GHY
當人體長期沒有進食纖維的話,將會導致腸道細菌品種失衡,使進食脂肪酸的細菌品種助大。522Please respect copyright.PENANAYQWcYuKxb4
522Please respect copyright.PENANAf7OxlovRJM
這亦有可能解釋得到,為何腸癌人士糞便中某數款脂肪酸的數量亦相對之為少。522Please respect copyright.PENANAeFrprjaokO
522Please respect copyright.PENANAUfe9y261PX
基於腸道細菌品種與大腸癌的形成有著密切關係,有不少研究團隊亦開始研究如何透過檢測糞便的細菌品種來推算出大腸癌的出現機率,與內窺鏡檢查相輔相成。522Please respect copyright.PENANA9hYN7GGAK2
522Please respect copyright.PENANAiOvBVBJa6D
522Please respect copyright.PENANAc6bPJqojU5
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。522Please respect copyright.PENANAQ1CtR5O1xZ
522Please respect copyright.PENANAjqF1k2nBPp
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc522Please respect copyright.PENANAXZivWkQchy
522Please respect copyright.PENANAknZUDwyvgA
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。522Please respect copyright.PENANAJougN4Q4fN
522Please respect copyright.PENANAra7vjBS4Sa
Link:522Please respect copyright.PENANA3FEtHQ2crS
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio522Please respect copyright.PENANAGsxNwTSqEl
522Please respect copyright.PENANAMfeKQqDUgj
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。522Please respect copyright.PENANAlrSuYMgcVA
522Please respect copyright.PENANAgowyQe4oBT
https://www.instagram.com/potatopigtongue/522Please respect copyright.PENANABOr3BGeEJg
522Please respect copyright.PENANA6tvQ92BTj1
522Please respect copyright.PENANAn2dRHqgpWI
Ref1:https://www.thelancet.com/journals/ebiom/article/PIIS2352-3964(19)30625-5/fulltext522Please respect copyright.PENANAG0gtacFnQB