上集講述了腸道細菌的品種變異有助大腸癌形成的證據。634Please respect copyright.PENANACyLmMRY4CC
https://www.penana.com/article/527196634Please respect copyright.PENANANpqbIyBuaz
634Please respect copyright.PENANASPwAGKp5XA
634Please respect copyright.PENANAhUasYgKioc
而除大腸癌外,腸道細菌的品種對成長方面亦會構成影響。634Please respect copyright.PENANAmCMLqhbbUv
634Please respect copyright.PENANAr9z5QDsGdG
(圖2)世衛(WHO)用上來自6個國家的8440個健康兒童三項數據634Please respect copyright.PENANAXAdxBypmf1
(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。634Please respect copyright.PENANArkaQmhRGxi
634Please respect copyright.PENANAjdgkaPgz7h
634Please respect copyright.PENANA2efiiRKN2t
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。634Please respect copyright.PENANASPHExuPKAS
634Please respect copyright.PENANAwUIwCr4S0C
(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)。634Please respect copyright.PENANAexVYWLYTXP
634Please respect copyright.PENANAYMVnQCWr5s
634Please respect copyright.PENANArK90wMwXpL
634Please respect copyright.PENANAoMRDXMfS07
(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。634Please respect copyright.PENANAtshT9QPvZz
634Please respect copyright.PENANA0HnpA7dzz9
634Please respect copyright.PENANAejCvgmXPBo
重要的是,兩組老鼠的進食量及體脂均無顯著分別。634Please respect copyright.PENANAIXVLgGmrmA
634Please respect copyright.PENANAHEw69R4SIJ
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。634Please respect copyright.PENANAa9VGOCzpD6
634Please respect copyright.PENANAbSmUdJvOyI
(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。634Please respect copyright.PENANAmxHEr0o93v
634Please respect copyright.PENANA2AAgpK4vTI
634Please respect copyright.PENANA0v6IMlk3S7
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。634Please respect copyright.PENANAL8FNX0tYgc
634Please respect copyright.PENANAOJwkT32YZ5
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。634Please respect copyright.PENANAzL1FM7csZl
634Please respect copyright.PENANA4GOZeXl266
(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。634Please respect copyright.PENANAnakWRkE5P4
634Please respect copyright.PENANAMvZos4vLWC
634Please respect copyright.PENANAUdXWkeic5P
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。634Please respect copyright.PENANANNcUwYcsC9
634Please respect copyright.PENANAjvhgwt7Bs1
634Please respect copyright.PENANA7NwxnabsPf
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。634Please respect copyright.PENANA8iiH7AYJ9H
634Please respect copyright.PENANAMTRpdyTMok
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/toc634Please respect copyright.PENANAKBjayRNGcb
634Please respect copyright.PENANAR8DEEpbeTJ
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。634Please respect copyright.PENANAA9cVJIAdqI
634Please respect copyright.PENANA0Owk3rJAKM
Link:634Please respect copyright.PENANAbtmWZI2RQF
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio634Please respect copyright.PENANA7gxZyPKOaC
634Please respect copyright.PENANA04HPzlDNql
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。634Please respect copyright.PENANAJXDJraGxDA
634Please respect copyright.PENANAY3cJLUc0hR
https://www.instagram.com/potatopigtongue/634Please respect copyright.PENANAVInuWYGbjl
634Please respect copyright.PENANAcC6ntszamK
634Please respect copyright.PENANAsg7xdKWSV6
634Please respect copyright.PENANAbDXbcF6Dqp
Ref1:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4787260/634Please respect copyright.PENANA0M32HmKl15
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科普專欄–薯不揀單
作者:
薯仔聞茱莉
篇 #129
深入淺出–腸道細菌對生長的影響(一)
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