上集講述了腸道細菌的品種變異有助大腸癌形成的證據。930Please respect copyright.ＰＥＮＡＮＡ0UhRbGacHZ
https://www.penana.com/article/527196930Please respect copyright.ＰＥＮＡＮＡcnMePSDNFD
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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。930Please respect copyright.ＰＥＮＡＮＡ45fI6DcLZP
930Please respect copyright.ＰＥＮＡＮＡTQx0Y1Ehca
(圖2)世衛(WHO)用上來自6個國家的8440個健康兒童三項數據930Please respect copyright.ＰＥＮＡＮＡGnTZwHPoON
(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。930Please respect copyright.ＰＥＮＡＮＡDwDYoRdA2J
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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。930Please respect copyright.ＰＥＮＡＮＡNDN5DAaAF2
930Please respect copyright.ＰＥＮＡＮＡo5A2FhCulT
(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)。930Please respect copyright.ＰＥＮＡＮＡpAZyExN5AQ
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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。930Please respect copyright.ＰＥＮＡＮＡHkkpWutyPl
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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。930Please respect copyright.ＰＥＮＡＮＡpVxbDtJV2P
930Please respect copyright.ＰＥＮＡＮＡkiTqnm2TXG
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。930Please respect copyright.ＰＥＮＡＮＡAiePfy7pQE
930Please respect copyright.ＰＥＮＡＮＡjfMSNRTn25
(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。930Please respect copyright.ＰＥＮＡＮＡkEGHFrbg3q
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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。930Please respect copyright.ＰＥＮＡＮＡ031C1ONcXM
930Please respect copyright.ＰＥＮＡＮＡh4SbUlINxS
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。930Please respect copyright.ＰＥＮＡＮＡaJvXpmRYHr
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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。930Please respect copyright.ＰＥＮＡＮＡx9CRHjAmkR
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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。930Please respect copyright.ＰＥＮＡＮＡnFW7GK56kj
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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。930Please respect copyright.ＰＥＮＡＮＡBejw9k7BF4
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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/toc930Please respect copyright.ＰＥＮＡＮＡ3nhzvuS923
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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。930Please respect copyright.ＰＥＮＡＮＡuFbVDTLjTn
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Link:930Please respect copyright.ＰＥＮＡＮＡU1xlkO4ONR
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio930Please respect copyright.ＰＥＮＡＮＡhX6SOxCHyy
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有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。930Please respect copyright.ＰＥＮＡＮＡu22e4bqaFN
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https://www.instagram.com/potatopigtongue/930Please respect copyright.ＰＥＮＡＮＡbaZQrppdOV
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Ref1:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4787260/930Please respect copyright.ＰＥＮＡＮＡ3ZR0smhWhb
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