其他
追本溯源:独特视角理解细菌耐药性!
耐药性的生物学理解及其应对策略
来源:感染诊断
耐受(Tolerance): 敏感细菌表现出降低的灭活率(slowed rate of killing for the bulk population)。即敏感细菌对有效抗菌药物一定程度的耐受,但并非是耐药细菌所表现出的那种耐药表型(如MIC升高)。 精准表述是: Tolerance is a population- level phenomenon that enables the population to survive the duration of a transient antibiotic treatment several times above the minimum inhibitory concentration (MIC) without a resistance mechanism。 持留(Persistence): 敏感细菌中部分菌体较多数菌体表现出低很多的灭活率(much slower rate of killing),或者根本就不被杀灭(are not killed at all)。 这种特征是一株细菌中部分菌体所表现出来的表型特征,而耐受是整体菌体共同表现出的表型特征。 精确表述是:Persistence is connected with a heterogeneous population, in which only a part of the population consists of tolerant cells。