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新生儿乳糖不耐受症是由于乳糖酶缺乏,不能完全消化分解母乳或牛乳中的乳糖所引起的一系列消化系统症状。乳糖是主要存在于哺乳动物乳汁中的一种双糖,母乳中乳糖含量为7.2 g/100 ml,牛乳中乳糖含量为4.7 g/100 ml。乳制品是新生儿主要的能量来源,乳糖为新生儿提供约20%的能量。在生长发育过程中,乳糖不仅在能量供给方面起重要作用,亦参与大脑的发育进程。乳糖主要在空肠及回肠吸收,在小肠上皮细胞刷状缘所分泌的乳糖酶
Neonatal lactose intolerance is a series of digestive symptoms caused by the lack of lactase, which can not completely digest lactose in milk or milk. Lactose is a disaccharide mainly found in mammalian milk with a lactose content of 7.2 g / 100 ml in milk and a lactose content of 4.7 g / 100 ml in milk. Dairy products are the main source of energy for newborns, and lactose provides about 20% of the energy for newborns. In the process of growth and development, lactose not only plays an important role in energy supply, but also participates in the development of the brain. Lactose is mainly absorbed in the jejunum and ileum, lactase secreted in the brush border of the intestinal epithelial cells