上集講述了腸道細菌的品種變異有助大腸癌形成的證據。667Please respect copyright.PENANAxIiKOW7K8G
https://www.penana.com/article/527196667Please respect copyright.PENANAo7B718wCSn667Please respect copyright.PENANALaSfO6Ia8S
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而除大腸癌外,腸道細菌的品種對成長方面亦會構成影響。667Please respect copyright.PENANA6jfOoGN23L
667Please respect copyright.PENANAbOBNtn15JN
(圖2)世衛(WHO)用上來自6個國家的8440個健康兒童三項數據667Please respect copyright.PENANAC2N2XT3VaH
(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。667Please respect copyright.PENANAdjgbWpu82z667Please respect copyright.PENANA4gCjLOkoVP
667Please respect copyright.PENANA3i1cWw0hYU
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。667Please respect copyright.PENANAxLnIU1oiYM
667Please respect copyright.PENANAldG0KnPpBA
(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)。667Please respect copyright.PENANAiDvVqMVUTq667Please respect copyright.PENANAPf0ak9ogoR
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(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。667Please respect copyright.PENANA53o6XUUwUy667Please respect copyright.PENANA68uLuQAMBj
667Please respect copyright.PENANAFdqypLfeku
重要的是,兩組老鼠的進食量及體脂均無顯著分別。667Please respect copyright.PENANAOya1AsF26t
667Please respect copyright.PENANATrb9p5eHPO
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。667Please respect copyright.PENANA1En3myIyn9
667Please respect copyright.PENANAVZsjQnmfUV
(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。667Please respect copyright.PENANAJ0kUtfgxD6667Please respect copyright.PENANACij7cSI09b
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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。667Please respect copyright.PENANA7xMihIdBmw
667Please respect copyright.PENANAwPfzTdmKp3
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。667Please respect copyright.PENANAkmeZ3nZqWB
667Please respect copyright.PENANAbpVHmRj1om
(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。667Please respect copyright.PENANA1QZOChmtho667Please respect copyright.PENANAJw7ASg3V0T
667Please respect copyright.PENANApNavjyYkhQ
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。667Please respect copyright.PENANApvnEtVCLYp
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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。667Please respect copyright.PENANAVSn6TIf19Z
667Please respect copyright.PENANAAjH5CaKB3E
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/toc667Please respect copyright.PENANADdQI6iIe0x
667Please respect copyright.PENANA1XyKKhp4Uf
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。667Please respect copyright.PENANAgoZsvpCfP5
667Please respect copyright.PENANA4dGtwIeQQs
Link:667Please respect copyright.PENANAjnEY4TMYTb
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio667Please respect copyright.PENANAb6aNxDWScd
667Please respect copyright.PENANAwFQpYWwGKX
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。667Please respect copyright.PENANABf1gFosLQv
667Please respect copyright.PENANAe5J9QpIiNx
https://www.instagram.com/potatopigtongue/667Please respect copyright.PENANAS9ZkPxKEOk
667Please respect copyright.PENANAvlfoIlMx5i
667Please respect copyright.PENANAEBAyOd7QQx
667Please respect copyright.PENANAlSHO5VtaAQ
Ref1:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4787260/667Please respect copyright.PENANAeXoWhQhP5J
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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 #129
深入淺出–腸道細菌對生長的影響(一)
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