早前曾講述自然產子及剖腹產子對嬰兒的腸道細菌品種有何影響,而今篇文章將會講解母乳餵哺對其的影響力。299Please respect copyright.PENANAAigdgaX94I299Please respect copyright.PENANAIG2gUK6Zi3
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深入淺出–自然順產及剖腹取子的其中一道分別299Please respect copyright.PENANAcs6MsD5B3y
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(圖2)科學家找來20名嬰兒,分別採樣0個月(即出生後11-152小時)、1個月及4個月的嬰兒糞便,並發現病毒基因並不會在0個月期間的嬰兒糞便尋覓得到,而在1個月及4個月的糞便中則找到病毒基因的存在。299Please respect copyright.PENANAvAXRKxwO7k299Please respect copyright.PENANAmnYsjBN3Tz
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這些病毒的出現,相信是從腸道而起。299Please respect copyright.PENANASoBQbKvXnd
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(圖3)經一系列的研究顯示,細菌及病毒寄宿在嬰兒腸道的過程至少被分成為兩種階段。299Please respect copyright.PENANAxZ6czWY7gJ299Please respect copyright.PENANA7z30FYkMyz
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第一階段中,含有病毒基因的細菌率先駐紮在嬰兒腸道內,病毒會因應時機從細菌中開始繁殖、或一直呈基因狀態與細菌共存。299Please respect copyright.PENANABGYzpSeqZJ
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至於第二階段,則為外來的病毒以自身的方式入侵腸道。299Please respect copyright.PENANApEOFDu6c5y
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而這裡亦是母乳餵哺方式囑目的地方,因為以母乳餵哺或母乳及奶粉混哺的嬰兒,其糞便的病毒數量顯著地比只用奶粉餵哺的為低。299Please respect copyright.PENANA636EPCJTb7
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這顯著的分別,相信是母乳所含的抗體及相關蛋白質及糖份有著抑壓病毒的能力所致。299Please respect copyright.PENANA8a9KUG3mP1
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若對這話題有感興趣,下集將會將一步講述母乳對病菌的影響。299Please respect copyright.PENANA6euS7ZjXBT
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Ref1:https://www.nature.com/articles/s41586-020-2192-1299Please respect copyright.PENANAdIJmmJ00Ll