抗生素对肠道定植抗力的影响研究进展

哺乳动物的胃肠道寄居着复杂的微生物种群，这些微生物种群被称为肠道微生物群，其与宿主的健康和疾病状态息息相关。肠道菌群可以防止外源病原体在胃肠道中定植，这种现象被称为“定植抗力”。对肠道微生态的干扰，譬如抗生素的使用，可能会改变微生物的组成，影响宿主免疫功能，并导致定植抗性的丧失，从而使宿主易于被病原体定植。本文对肠道定植抗力的形成机制以及抗生素对定植抗力影响的研究进展进行综述，旨在为人们合理使用抗生素、研发抗生素替代疗法提供理论参考。

Research progress on the effect of antibiotics on intestinal colonization resistance

The gastrointestinal tract of mammals is home to a complex population of microorganisms, known as the gut microbiota, which is closely related to the state of health of the host. The intestinal flora can prevent the colonization of exogenous pathogens in the gastrointestinal tract, a phenomenon known as “colonial resistance”. Disturbances to the intestinal microecology, such as the use of antibiotics, may change the composition of microorganisms, affect the host’s immune function, and cause the loss of colonization resistance, making the host vulnerable to colonization by pathogens. This article reviews the research on the mechanism of intestinal colonization resistance and the impact of antibiotics on colonization resistance, aiming to provide a theoretical reference for the rational use of antibiotics and researching alternative therapies for antibiotic treatment.