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。747Please respect copyright.PENANAonpii2eH9Z747Please respect copyright.PENANAz2gSPoTVfj
747Please respect copyright.PENANAIJ1kSQNFWH
(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。747Please respect copyright.PENANACbNwvFF2CB747Please respect copyright.PENANAoh3I2VcB8S
747Please respect copyright.PENANA2y6T05vawg
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)。747Please respect copyright.PENANA9pNaZBKgEd
747Please respect copyright.PENANAoc6vKdAP2H
(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。747Please respect copyright.PENANAx1pJTZ4b0K747Please respect copyright.PENANA6jm526z1C9
747Please respect copyright.PENANAUzN9gL4SiN
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。747Please respect copyright.PENANAl8pIAkG5eN
747Please respect copyright.PENANAkpGEtIugtr
(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。747Please respect copyright.PENANA7FENVpv2Df747Please respect copyright.PENANAD9F2CpGfNQ
747Please respect copyright.PENANALRxfpjxEuZ
而移植糞便後,兩組老鼠的腸道細菌品種亦有明顯分別。747Please respect copyright.PENANAj9VhXsNsJY
747Please respect copyright.PENANAZYBqZcthfS
(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。747Please respect copyright.PENANAvmCHtB0HlC
747Please respect copyright.PENANAXjHlAfGmeO
747Please respect copyright.PENANAI3wzDS8wSE
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。747Please respect copyright.PENANAX0BR6uQ0wG
747Please respect copyright.PENANAex6wqtgebX
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。747Please respect copyright.PENANA1VmScwxgcv
747Please respect copyright.PENANAg7AIdiKXCB
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。747Please respect copyright.PENANAkIzgVFQ3n3
747Please respect copyright.PENANAU0ByKbeoUG
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。747Please respect copyright.PENANAAaqR4iYKtL
747Please respect copyright.PENANAg4MbgjF9pK
747Please respect copyright.PENANAg6TnJQf12T
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。747Please respect copyright.PENANAqFIq1FHUKu
747Please respect copyright.PENANAnjWLFZ1VVu
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/toc747Please respect copyright.PENANAOIfIt1gzvO
747Please respect copyright.PENANA7IyLJtGnJp
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。747Please respect copyright.PENANA4YmAtRB9af
747Please respect copyright.PENANAEeq0nLK0LV
Link:747Please respect copyright.PENANAfJ77qAseu7
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio747Please respect copyright.PENANAAjXlww7lgc
747Please respect copyright.PENANApSr31zt73y
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。747Please respect copyright.PENANAgR2pqY1RnF
747Please respect copyright.PENANAJ3mBmHBjXf
https://www.instagram.com/potatopigtongue/747Please respect copyright.PENANABx1qex41Qr
747Please respect copyright.PENANA6PVUFLRoL0
747Please respect copyright.PENANA9pO2hx9AkR
Ref1:https://www.thelancet.com/journals/ebiom/article/PIIS2352-3964(19)30625-5/fulltext747Please respect copyright.PENANA9bhD8zUwtk
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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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