【摘要】 人体的肠道内寄居着大量的微生物,在健康状态下与宿主处于共生关系,能阻止致病菌从肠道易位至人体其他部位。肠道菌群总体维持着动态平衡,并且参与宿主的新陈代谢。肠道菌群是食物消化的主要参与者,参与碳水化合物、脂肪、蛋白质、维生素等主要营养物质的分离、合成和吸收。细菌的生长需要氮源,肠道菌群通过参与机体蛋白质的代谢,一方面为自身的生长提供氮源,同时也为宿主提供必需氨基酸以满足宿主生理需求。不同类型蛋白质对菌群的作用有所不同,有些能促进菌群的生长,有些则产生抑制作用。菌源性氨基酸对宿主的健康有着重要的意义,恢复肠道内氨基酸平衡可以作为治疗诸如肠易激综合征,溃疡性结肠炎等肠道疾病的新思路。更多还原

【Abstract】 A large number of microorganisms reside in human intestine.These microorganisms are in a symbiotic relationship with the host under healthy condition and can prevent pathogens from translocation to other parts of human body.Intestinal flora is in a dynamic balance and participates in the metabolism of the host.Intestinal flora is the main participants in food digestion such as the separation,synthesis and absorption of carbohydrates,fats,proteins and vitamins.The growth of bacteria depends on nitrogen source.Intestinal flora can provide nitrogen source for themselves and for the host by participating in protein metabolism.Different types of proteins have different influence on intestinal flora.Some proteins can promote while the others can inhibit the growth of intestinal flora.Bacteria produced amino acids are of important significance to the health of host.Restoring the amino acid balance in intestine can be a new way to treat bowel diseases such as irritable bowel syndrome and ulcerative colitis.更多还原