母乳除含有對付病毒細菌的抗體外,亦含有不同款式的糖類化合物,統稱為Human Milk Oligosaccharides(HMO)。914Please respect copyright.PENANAez3WNxaAH7
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這些HMO無法被人體消化,故此接近有90%的HMO均能在嬰兒的便便中尋覓得到。914Please respect copyright.PENANAYLWZFGhAYn
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(圖2)細菌病毒大多需要透過腸道細胞表面的蛋白質入侵身體,然而這些HMO的結構與那些蛋白質的形狀非常相似,因此能夠阻擋細菌病毒透過腸道表面蛋白質進入身體。914Please respect copyright.PENANAkKLHM6VAlA
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諾如病毒(Noroviruses)是導致嬰兒肚痾的主要元兇,若母乳某類的HMO含量(lacto-N-difucohexaose)較高的話,嬰兒因此病毒導致肚痾的機率亦會較低。914Please respect copyright.PENANAI7gtjG1NTJ
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(圖3)除HMO外,母乳亦含有大量名為乳鐵蛋白(Lactoferrin)的蛋白質。914Please respect copyright.PENANAyjKCl3o3Dd
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它具有吸取細菌所需的鐵質能力,因此能抑制細菌的生長;914Please respect copyright.PENANATTK1dCE1gr
它亦能破壞某類細菌的細菌壁,直接將細菌擊倒。914Please respect copyright.PENANAyWAe3KxJtL
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在兔仔及老鼠的動物模型實驗中,乳鐵蛋白對抗細菌的能力亦得以證實。914Please respect copyright.PENANA9uPVQcn0Tm
有研究嘗試為嬰兒產品加入乳鐵蛋白成份,亦錄得嬰兒肚痾次數或脫水機率得以降低。914Please respect copyright.PENANA4hNaZ4xsb3
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Ref1:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4036098/
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