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。758Please respect copyright.PENANA4RL5wvscga758Please respect copyright.PENANAJgd4JdpeRz
758Please respect copyright.PENANAAM4dO7WSq1
(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。758Please respect copyright.PENANAATQw8WqzQj758Please respect copyright.PENANAMWsApVshiw
758Please respect copyright.PENANAQwHg1DEq1S
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)。758Please respect copyright.PENANATzroooNhX3
758Please respect copyright.PENANABUsJM4UpzS
(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。758Please respect copyright.PENANAuvX8V6Gmn6758Please respect copyright.PENANAObyYOCFRbC
758Please respect copyright.PENANAMpUwdyPOQ4
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。758Please respect copyright.PENANAAz6aLPEF7P
758Please respect copyright.PENANAKYJnC26cVC
(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。758Please respect copyright.PENANAW3oICDR6cT758Please respect copyright.PENANAHQK36PbTpO
758Please respect copyright.PENANA4JSxOLNnGV
而移植糞便後,兩組老鼠的腸道細菌品種亦有明顯分別。758Please respect copyright.PENANAe3Ahp8Y2Ip
758Please respect copyright.PENANAA1SjHPh5l7
(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。758Please respect copyright.PENANAn5NRVbGPrI
758Please respect copyright.PENANAkRFtTgRDvm
758Please respect copyright.PENANAIVcuP2s9v5
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。758Please respect copyright.PENANAKkEx2jmZC5
758Please respect copyright.PENANAZ7CxgkvYnx
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。758Please respect copyright.PENANATYnZr5fplr
758Please respect copyright.PENANAwI7VmAXm3F
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。758Please respect copyright.PENANAcZsCRcS5OS
758Please respect copyright.PENANAKQyZCil7fx
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。758Please respect copyright.PENANA1WocaKl4Mc
758Please respect copyright.PENANAqcJ0sjFTAS
758Please respect copyright.PENANAmhrHRftehk
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。758Please respect copyright.PENANAFlZHkQ6GYu
758Please respect copyright.PENANAj9rAe9paKk
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/toc758Please respect copyright.PENANAd02xdRjuwh
758Please respect copyright.PENANAlca8VNGrWG
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。758Please respect copyright.PENANAwPpYYv9ApL
758Please respect copyright.PENANAva4qODEZg3
Link:758Please respect copyright.PENANAReFEAlb2hZ
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio758Please respect copyright.PENANAv45vRi039j
758Please respect copyright.PENANAiVFyisgDiA
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。758Please respect copyright.PENANATM6TmFcr6y
758Please respect copyright.PENANAWTSx6IbE5O
https://www.instagram.com/potatopigtongue/758Please respect copyright.PENANAZmIxNxStOU
758Please respect copyright.PENANASkHsMPk3Xv
758Please respect copyright.PENANAL7xap6ggm5
Ref1:https://www.thelancet.com/journals/ebiom/article/PIIS2352-3964(19)30625-5/fulltext758Please respect copyright.PENANAc6VM2g7Wad
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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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