科普專欄–薯不揀單 - 深入淺出–腸道細菌對生長的影響（一）

上集講述了腸道細菌的品種變異有助大腸癌形成的證據。918Please respect copyright.ＰＥＮＡＮＡ2d9zyUCmHD
https://www.penana.com/article/527196918Please respect copyright.ＰＥＮＡＮＡSK4MdnN31R
918Please respect copyright.ＰＥＮＡＮＡt83NqCwt6A
918Please respect copyright.ＰＥＮＡＮＡ39uE8KwYq0
而除大腸癌外，腸道細菌的品種對成長方面亦會構成影響。918Please respect copyright.ＰＥＮＡＮＡl2jeh8mXNy
918Please respect copyright.ＰＥＮＡＮＡCsEa0MmfpW
(圖2)世衛(WHO)用上來自6個國家的8440個健康兒童三項數據918Please respect copyright.ＰＥＮＡＮＡD39HG81pbK
(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。918Please respect copyright.ＰＥＮＡＮＡWonHNff6BE
918Please respect copyright.ＰＥＮＡＮＡVEojVrIyng
918Please respect copyright.ＰＥＮＡＮＡOqWGuWXv52
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。918Please respect copyright.ＰＥＮＡＮＡMrSOffnAPa
918Please respect copyright.ＰＥＮＡＮＡsF4ZMvPAIa
(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)。918Please respect copyright.ＰＥＮＡＮＡ3wVkCpNRXs
918Please respect copyright.ＰＥＮＡＮＡ2DYSkuAYxE
918Please respect copyright.ＰＥＮＡＮＡ2eqgmMVGwE
918Please respect copyright.ＰＥＮＡＮＡpjniCohpxG
(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。918Please respect copyright.ＰＥＮＡＮＡwy86BHNHmy
918Please respect copyright.ＰＥＮＡＮＡCeQtBFle3s
918Please respect copyright.ＰＥＮＡＮＡnTe5cQ1MEJ
重要的是，兩組老鼠的進食量及體脂均無顯著分別。918Please respect copyright.ＰＥＮＡＮＡ3K9VuXTE2s
918Please respect copyright.ＰＥＮＡＮＡDN1BjSABbj
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。918Please respect copyright.ＰＥＮＡＮＡPaWgSSZcpl
918Please respect copyright.ＰＥＮＡＮＡxWJOYu3Fsm
(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。918Please respect copyright.ＰＥＮＡＮＡN08eN8h9Hy
918Please respect copyright.ＰＥＮＡＮＡTQdFhvbOLy
918Please respect copyright.ＰＥＮＡＮＡ3MxROzJgnR
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。918Please respect copyright.ＰＥＮＡＮＡOvJ7WYX97b
918Please respect copyright.ＰＥＮＡＮＡj5ZBsRk97R
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。918Please respect copyright.ＰＥＮＡＮＡK8LNxjfA5A
918Please respect copyright.ＰＥＮＡＮＡI3h3IN8y4m
(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。918Please respect copyright.ＰＥＮＡＮＡx44u4bM6Hx
918Please respect copyright.ＰＥＮＡＮＡdiZoB2K9Dv
918Please respect copyright.ＰＥＮＡＮＡWLKr1K37zA
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。918Please respect copyright.ＰＥＮＡＮＡLKXqzjSLi4
918Please respect copyright.ＰＥＮＡＮＡhr5mnCWZTv
918Please respect copyright.ＰＥＮＡＮＡwbNYPgiRHs
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。918Please respect copyright.ＰＥＮＡＮＡlCht7A0ga2
918Please respect copyright.ＰＥＮＡＮＡvrtP9vJs2Y
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/toc918Please respect copyright.ＰＥＮＡＮＡ3Hw3kxWI0j
918Please respect copyright.ＰＥＮＡＮＡdhSJhcTZnt
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。918Please respect copyright.ＰＥＮＡＮＡdsNqLVicSu
918Please respect copyright.ＰＥＮＡＮＡkuYV4Kw8F3
Link:918Please respect copyright.ＰＥＮＡＮＡFxrAQLJFfE
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio918Please respect copyright.ＰＥＮＡＮＡ44bhKTgR4K
918Please respect copyright.ＰＥＮＡＮＡsbi8diCvge
有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。918Please respect copyright.ＰＥＮＡＮＡQQzRwRCUjh
918Please respect copyright.ＰＥＮＡＮＡ1eKVqRiKgj
https://www.instagram.com/potatopigtongue/918Please respect copyright.ＰＥＮＡＮＡDikTw9pvri
918Please respect copyright.ＰＥＮＡＮＡiS2dxaW1Ac
918Please respect copyright.ＰＥＮＡＮＡ0Gp7Tw3fId
918Please respect copyright.ＰＥＮＡＮＡmU1wYq1dmE
Ref1:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4787260/918Please respect copyright.ＰＥＮＡＮＡw3wWtJ2DG0