上集講述了腸道細菌的品種變異有助大腸癌形成的證據。803Please respect copyright.PENANAOWtZbVCVbe
https://www.penana.com/article/527196803Please respect copyright.PENANAGtkTckq2lG803Please respect copyright.PENANA8HzigvSLoA
803Please respect copyright.PENANA5hKNGDSBvS
而除大腸癌外,腸道細菌的品種對成長方面亦會構成影響。803Please respect copyright.PENANAV9M5HccSvI
803Please respect copyright.PENANA2EalvtyPvJ
(圖2)世衛(WHO)用上來自6個國家的8440個健康兒童三項數據803Please respect copyright.PENANAHFL72PIVeK
(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。803Please respect copyright.PENANA5dzxLzjJBB803Please respect copyright.PENANAUC8EPRAnl8
803Please respect copyright.PENANAYGogc8x1kK
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。803Please respect copyright.PENANA4MWlrC0f3B
803Please respect copyright.PENANAo143n8TX3h
(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)。803Please respect copyright.PENANAE9CWH0nFVV803Please respect copyright.PENANAqjhXIm3Cl2
803Please respect copyright.PENANAmd0U0V8ANt
803Please respect copyright.PENANA264DwH37GB
(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。803Please respect copyright.PENANAotiinQG5sh803Please respect copyright.PENANATUnFx7UZYw
803Please respect copyright.PENANA4rwDRuN3uB
重要的是,兩組老鼠的進食量及體脂均無顯著分別。803Please respect copyright.PENANAPc1FP13WRO
803Please respect copyright.PENANACW9UrRucw3
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。803Please respect copyright.PENANAc7xj4AzWG0
803Please respect copyright.PENANAeCR7DMFYsZ
(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。803Please respect copyright.PENANAaEhAIJB6tB803Please respect copyright.PENANAhsPHloFScj
803Please respect copyright.PENANACS5Tu51fS1
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。803Please respect copyright.PENANAoole2wxlPp
803Please respect copyright.PENANAc3OSOReWk8
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。803Please respect copyright.PENANAgOICS7kGj1
803Please respect copyright.PENANAupHEJ3E8TT
(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。803Please respect copyright.PENANAHtKWGPuh44803Please respect copyright.PENANAHOKMrYny7N
803Please respect copyright.PENANAM4Z627MSd5
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。803Please respect copyright.PENANA8fNrsejl2y
803Please respect copyright.PENANACAxkhDOJIg
803Please respect copyright.PENANAsRv2InVyu1
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。803Please respect copyright.PENANAwwcfznA5FF
803Please respect copyright.PENANAtS0I7Avbyq
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/toc803Please respect copyright.PENANAUGJd50wn6A
803Please respect copyright.PENANA63yLlc3LmO
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。803Please respect copyright.PENANAfaieSAjscT
803Please respect copyright.PENANALj84fWASbi
Link:803Please respect copyright.PENANAzCYkv6zJg1
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio803Please respect copyright.PENANAFJYn1Om93W
803Please respect copyright.PENANAi2EvZQeZWZ
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。803Please respect copyright.PENANAdyHi7G0toq
803Please respect copyright.PENANA9qUTbkSGOO
https://www.instagram.com/potatopigtongue/803Please respect copyright.PENANAQgeVxdZUfh
803Please respect copyright.PENANA2Du49gREEh
803Please respect copyright.PENANAxZzJhtCabZ
803Please respect copyright.PENANAFsZbKltkAP
Ref1:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4787260/803Please respect copyright.PENANA3paqaWZU9d