研究结果表明,细菌可以经胃肠道导致全身感染,其促进因素主要有三个:肠道菌群失调导致细菌过度繁殖;机体免疫功能削弱及肠粘膜屏障功能丧失。由于上述情况常见于营养不良患者,所以目前研究的重点集中在营养支持的成分与途径同细菌易位的关系。本文研究目的有两个:1.研究饮食所致细菌易位小鼠 The results show that bacteria can cause systemic infection through the gastrointestinal tract, and its promotion of three main factors: intestinal flora lead to excessive bacterial proliferation; immune function weakened and loss of intestinal barrier function. As these conditions are common in patients with malnutrition, the current research focuses on the relationship between components and pathways of nutritional support and bacterial translocation. This study has two purposes: 1. To study the diet-induced bacterial translocation in mice