上集講述了腸道細菌的品種變異有助大腸癌形成的證據。919Please respect copyright.ＰＥＮＡＮＡ7DGT7Llnzp
https://www.penana.com/article/527196919Please respect copyright.ＰＥＮＡＮＡrMLG5LZDv0
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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。919Please respect copyright.ＰＥＮＡＮＡ3pAo3KG0oU
919Please respect copyright.ＰＥＮＡＮＡBRDEI914lw
(圖2)世衛(WHO)用上來自6個國家的8440個健康兒童三項數據919Please respect copyright.ＰＥＮＡＮＡRvDbQznP5b
(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。919Please respect copyright.ＰＥＮＡＮＡbvMeX2iozH
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919Please respect copyright.ＰＥＮＡＮＡsUxbisFjnj
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。919Please respect copyright.ＰＥＮＡＮＡsYljW3CQYe
919Please respect copyright.ＰＥＮＡＮＡetiCChXW33
(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)。919Please respect copyright.ＰＥＮＡＮＡF3880KWVFB
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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。919Please respect copyright.ＰＥＮＡＮＡbc6lZXWqFF
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重要的是，兩組老鼠的進食量及體脂均無顯著分別。919Please respect copyright.ＰＥＮＡＮＡgRoub1MMcH
919Please respect copyright.ＰＥＮＡＮＡGvqwpYIOUc
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。919Please respect copyright.ＰＥＮＡＮＡrAmSCrdMiw
919Please respect copyright.ＰＥＮＡＮＡCTVA4No3ST
(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。919Please respect copyright.ＰＥＮＡＮＡZbZYJwg29q
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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。919Please respect copyright.ＰＥＮＡＮＡ8wRZhohxJC
919Please respect copyright.ＰＥＮＡＮＡCgdLsmT2FN
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。919Please respect copyright.ＰＥＮＡＮＡHDc3AG16np
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(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。919Please respect copyright.ＰＥＮＡＮＡ8IGHHCBWcK
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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。919Please respect copyright.ＰＥＮＡＮＡr3dQplBxud
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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。919Please respect copyright.ＰＥＮＡＮＡadyvVRhsl9
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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/toc919Please respect copyright.ＰＥＮＡＮＡH2D12lF0o8
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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。919Please respect copyright.ＰＥＮＡＮＡD7JsHqSDlu
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Link:919Please respect copyright.ＰＥＮＡＮＡeFnmAdfAFn
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio919Please respect copyright.ＰＥＮＡＮＡEGZJk7cOmo
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有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。919Please respect copyright.ＰＥＮＡＮＡ31xRCWbJDp
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https://www.instagram.com/potatopigtongue/919Please respect copyright.ＰＥＮＡＮＡ74QMWGlkCv
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Ref1:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4787260/919Please respect copyright.ＰＥＮＡＮＡAtvYCTWUul
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