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。464Please respect copyright.PENANA2t1AZq1mmo464Please respect copyright.PENANAhAG5X8SU2f
464Please respect copyright.PENANAsx0rryf1Xo
(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。464Please respect copyright.PENANAdqpPFmmSHh464Please respect copyright.PENANAEmV95Jz3ha
464Please respect copyright.PENANA2yJWbaOLJC
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)。464Please respect copyright.PENANAvcXdD2t9x0
464Please respect copyright.PENANASpSpmCiWM3
(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。464Please respect copyright.PENANANr1CuOi5FM464Please respect copyright.PENANAclpmQjcUyj
464Please respect copyright.PENANAera8JOa7HI
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。464Please respect copyright.PENANAe0DKgndUCj
464Please respect copyright.PENANA2MBcQBJsfY
(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。464Please respect copyright.PENANAv807F7ZvO3464Please respect copyright.PENANAogJcLJ0f9U
464Please respect copyright.PENANA7gAsxzX3Iw
而移植糞便後,兩組老鼠的腸道細菌品種亦有明顯分別。464Please respect copyright.PENANAOj98zuNJMf
464Please respect copyright.PENANAFLtRo0CCRD
(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。464Please respect copyright.PENANAWp7FH0LAiS
464Please respect copyright.PENANAXJYegAKl8d
464Please respect copyright.PENANAdDjHiMR5dk
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。464Please respect copyright.PENANA3wZEVnlSjc
464Please respect copyright.PENANA4Cx3FAiEBm
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。464Please respect copyright.PENANANLg8iSSOuG
464Please respect copyright.PENANA1bkIuY260B
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。464Please respect copyright.PENANAoLx4DSKghu
464Please respect copyright.PENANAkXhllM1Rc1
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。464Please respect copyright.PENANA9wsGmRXiTG
464Please respect copyright.PENANA4fPRjllATP
464Please respect copyright.PENANAwdi23VLJ7X
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。464Please respect copyright.PENANAZl4pUGsJiQ
464Please respect copyright.PENANAOfQfa202dM
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/toc464Please respect copyright.PENANA4hRJ4lncKB
464Please respect copyright.PENANAAyMhmsB3aU
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。464Please respect copyright.PENANA8vK51IJAZA
464Please respect copyright.PENANAhtZLc2Nxdr
Link:464Please respect copyright.PENANA1t44UOakj5
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio464Please respect copyright.PENANA9MFApFRdqd
464Please respect copyright.PENANAGdruFa7YfP
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。464Please respect copyright.PENANAxix8KdYhhJ
464Please respect copyright.PENANA4bS9jjyHpc
https://www.instagram.com/potatopigtongue/464Please respect copyright.PENANAFFz9ZC1AqE
464Please respect copyright.PENANA923WFayiqe
464Please respect copyright.PENANA5hpcbkDp9Q
Ref1:https://www.thelancet.com/journals/ebiom/article/PIIS2352-3964(19)30625-5/fulltext464Please respect copyright.PENANATfrNTHDRbb
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科普專欄–薯不揀單
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薯仔聞茱莉
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ISSUE #126
深入淺出–腸道細菌與大腸癌
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