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。749Please respect copyright.PENANAbWbiMQFbgu749Please respect copyright.PENANA6MW6lAG008
749Please respect copyright.PENANAy9pNpUyCOr
(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。749Please respect copyright.PENANA8ISzgoEFUU749Please respect copyright.PENANAxiJoqpBhu7
749Please respect copyright.PENANAWeVX6o6RhS
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)。749Please respect copyright.PENANAvI4FMdaXUH
749Please respect copyright.PENANAhoPqcQ7b55
(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。749Please respect copyright.PENANAPuLfvtSm5o749Please respect copyright.PENANAtqe1ayC6Oh
749Please respect copyright.PENANAPF7cC9I2an
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。749Please respect copyright.PENANAL93Y3CNKto
749Please respect copyright.PENANA3yghC5Bjuy
(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。749Please respect copyright.PENANAOWxBLXwCUu749Please respect copyright.PENANAArEKCrO6R3
749Please respect copyright.PENANAeN512OnKrD
而移植糞便後,兩組老鼠的腸道細菌品種亦有明顯分別。749Please respect copyright.PENANATWvkEjWRy2
749Please respect copyright.PENANASwFgYdD0Py
(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。749Please respect copyright.PENANAm5NLyLMhet
749Please respect copyright.PENANAx0LymAtdMJ
749Please respect copyright.PENANAX3IXiSBglj
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。749Please respect copyright.PENANAqUYZHGZRYu
749Please respect copyright.PENANAwiaRspPald
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。749Please respect copyright.PENANA07WKXWQw7S
749Please respect copyright.PENANAElNCpSTEoT
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。749Please respect copyright.PENANAcN0r9Qdg4Y
749Please respect copyright.PENANA2qdQ9Cw3mW
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。749Please respect copyright.PENANAeLsY8rrief
749Please respect copyright.PENANAsiYXeiI9kt
749Please respect copyright.PENANAZQmGZeJEr3
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。749Please respect copyright.PENANAO3rNDo4eGr
749Please respect copyright.PENANASpnOVW08cl
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/toc749Please respect copyright.PENANASJAq0lv80t
749Please respect copyright.PENANAJEewsz4AiF
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。749Please respect copyright.PENANAdjKBg4co3b
749Please respect copyright.PENANA5GG6UulpuU
Link:749Please respect copyright.PENANARZFmU9b6aQ
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio749Please respect copyright.PENANA5jFnvY1Nw7
749Please respect copyright.PENANAFlxpcw7FdS
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。749Please respect copyright.PENANAOO6KoUl9PW
749Please respect copyright.PENANA6RCLPqVXEi
https://www.instagram.com/potatopigtongue/749Please respect copyright.PENANAHeK5ly5kaM
749Please respect copyright.PENANAi8Vez8VrBD
749Please respect copyright.PENANAAL5au8kOVW
Ref1:https://www.thelancet.com/journals/ebiom/article/PIIS2352-3964(19)30625-5/fulltext749Please respect copyright.PENANAxtakMozy6C
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科普專欄–薯不揀單
作者:
薯仔聞茱莉

篇 #126
深入淺出–腸道細菌與大腸癌
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