上集講述了腸道細菌的品種變異有助大腸癌形成的證據。852Please respect copyright.PENANAG082IGx1hN
https://www.penana.com/article/527196852Please respect copyright.PENANAKqiHjNtdXE852Please respect copyright.PENANAHuI8KddOus
852Please respect copyright.PENANAjv7MbV8ywc
而除大腸癌外,腸道細菌的品種對成長方面亦會構成影響。852Please respect copyright.PENANAc3Lzm19nbc
852Please respect copyright.PENANAvpdR5rHJUu
(圖2)世衛(WHO)用上來自6個國家的8440個健康兒童三項數據852Please respect copyright.PENANADERwmJ2YwS
(重量對比高度、重量對比歲數及高度對比歲數),定立了兒童是否呈營養充足的標準。852Please respect copyright.PENANAHoYYBkHngB852Please respect copyright.PENANA1l8zrxj174
852Please respect copyright.PENANAjTpqRGOJ99
若兒童的三項數據低於某一個程度,兒童便會界定為營養不良的狀態。852Please respect copyright.PENANA8nwgLhYBnP
852Please respect copyright.PENANAXEiMfMvbRf
(圖3)根據世衛定下的標準界定其營養攝取量是否充足,有科學家收集來自非洲東南部的內陸國家馬拉威6-18月大的兒童糞便,透過糞便移植(從口中灌入)將人類腸道的細菌寄居到老鼠的腸道中,從而探討腸道細菌對生長的影響(Ref1)。852Please respect copyright.PENANAJJvR1nI1bM852Please respect copyright.PENANAxCZiELQ4ZC
852Please respect copyright.PENANAny82PHvTW0
852Please respect copyright.PENANAJ4GXFAxAxz
(圖4)在食物款式一模一樣的情況下,移植營養充足兒童糞便的老鼠,其整體重量及肌肉重量均比移植營養不良兒童糞便的老鼠為高。852Please respect copyright.PENANA6kj66ihyG3852Please respect copyright.PENANAxT8dbQs2ps
852Please respect copyright.PENANAaD5DKJPyT9
重要的是,兩組老鼠的進食量及體脂均無顯著分別。852Please respect copyright.PENANARhUjgjEMpZ
852Please respect copyright.PENANAQL70YyosJD
亦即是表示在食物攝取量一樣的狀態下,移植營養充足兒童糞便的老鼠,其肌肉的增長相對上較高。852Please respect copyright.PENANA8QoKuq6K6b
852Please respect copyright.PENANAdkEsUx29CA
(圖5)科學家繼而作出另一實驗,糞便移植4日後,老鼠便開始進行不同組別的定居。852Please respect copyright.PENANA3lHskYDYe9852Please respect copyright.PENANAxQEvrxGOpg
852Please respect copyright.PENANAJp6AAO2olE
當移植營養充足兒童糞便的老鼠與營養不良兒童糞便的老鼠一同定居後,兩者的肌肉重量再也沒有分別。852Please respect copyright.PENANAbPHH0TNChh
852Please respect copyright.PENANAKZJFPJxyMP
但兩組分別飼養的話,移植營養充足兒童糞便的老鼠的肌肉重量顯然比營養不良兒童糞便組別為重。852Please respect copyright.PENANAAUVKQhB0qS
852Please respect copyright.PENANAmyIsZ3926W
(圖6)科學家發現,不同組別的老鼠定居後,老鼠的腸道群組亦同化成為營養充足的腸道群組。852Please respect copyright.PENANAk5FITq8qYv852Please respect copyright.PENANAZmBBquD2FE
852Please respect copyright.PENANAj9xPd5iorV
而經過一系列的實驗後,科學家提出R. gnavus 及 C. symbiosum這兩細菌品種在改變新陳代謝方面上具有重大的影響力,引致老鼠生長不良的情況。852Please respect copyright.PENANA3IAfD5EzAR
852Please respect copyright.PENANAUxT8bnR3bj
852Please respect copyright.PENANA6vxAkTiRjj
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。852Please respect copyright.PENANAuTOxMjLCXs
852Please respect copyright.PENANA3zjkJwORaF
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/toc852Please respect copyright.PENANAJFZIi6LEUQ
852Please respect copyright.PENANAWvJHRbpVSO
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。852Please respect copyright.PENANAB3lN7Gpoh7
852Please respect copyright.PENANAZUCfkegX4p
Link:852Please respect copyright.PENANApvFDNu09xA
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio852Please respect copyright.PENANAymZ09mJI1G
852Please respect copyright.PENANAOl7vmixUBK
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。852Please respect copyright.PENANAKgYF5sQgSf
852Please respect copyright.PENANA0SI3Rxju43
https://www.instagram.com/potatopigtongue/852Please respect copyright.PENANAYw0xplAE1O
852Please respect copyright.PENANAMlZIHRMAiT
852Please respect copyright.PENANAMk9e2PFa2c
852Please respect copyright.PENANAuYTrOgP5Kr
Ref1:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4787260/852Please respect copyright.PENANAzpHZLEeW8C