肠道细菌移居：短肠综合征肠道微生态紊乱的核心

Bacterial translocation：the core of gut microbiota dysbiosis in patients with short bowel syndrome

人体肠道定植着大量细菌,正常情况下肠道菌群处于动态平衡.短肠综合征患者肠道正常的菌群结构遭到破坏,使肠道微生态发生显著变化：结肠菌群失调、小肠细菌过度生长,导致肠道消化及吸收功能障碍、黏膜炎症,进而延长肠外营养支持治疗时间.与此同时,小肠细菌过度生长还会导致肠功能障碍相关性肝损伤,最终导致机体各种功能障碍.本文综述短肠综合征患者肠道细菌在肠道内的移居,为其治疗及预防提供理论基础.

The human gastrointestinal tract is colonized by complex and diverse microbiota which maintains an ecological balance under normal circumstances.Short bowel syndrome causes damage to the normal flora which predisposes the patient to colonic dysbacteriosis and small intestine bacterial overgrowth.Small intestine bacterial overgrowth may lead to digestive and absoptive disfunctions, mucosal inflammation, and may delay or prevent weaning from total parenteral nutrition.Moreover, small intestine bacterial overgrowth may be one of the causes of intestinal failure-associated liver disease, and eventually lead to various body dysfunctions.In this review, the bacterial translocation in short bowel syndrome were summarized, providing the theoretic proofs to treatment and prevention.