Advances of the relationship between intestinal microbiota and human immune system

Intestinal flora can participate in and influence the physiological function and disease process of the organism as part of the host. The symbiotic relationship between intestinal flora and the host is the result of species′ evolution over millions of years. Immunity system, which is complex and includes multiple influencing factors, is the necessary defense system that runs through human life. Among them, the intestinal flora plays an important role in maintaining the steady state of human immunity system. In this paper, the relationship between intestinal flora and immune system disease is briefly described, in order to deepen the understanding for medical workers and researchers, and provide references for the prevention, treatment and prognosis of the disease.(Chin J Lab Med, 2018, 41: 692-695) Key words: Autoimmune diseases; Gastrointestinal microbiome; Immune system