摘要
[Objective] The paper was to study in vitro pharmacodynamics characteristics of florfenicol dual suspension emulsion (DSEF). [Method] The florfenicol injection (FI) was used as the control group, the minimal inhibitory concentration (MIC), minimal bactericide concentration (MBC) and mutant selection window (MSW) of florfenicol dual suspension emulsion on 5 kinds of bacteria were determined. The post-antibiotic effect (PAE) and post-antibiotic sub-MIC effect (PASME) of Salmonella typhimurium were also measured. [Result] Compared with the ordinary injection, the MIC and MBC of florfenicol dual suspension emulsion on 5 kinds of bacteria showed no obvious changes. However, florfenicol dual suspension emulsion obviously narrowed MSW of 5 kinds of bacteria (P<0.01), which also significantly extended PAE and PASME of S. typhimurium (P<0.01). [Conclusion] The florfenicol dual suspension emulsion in vitro can reduce the probability of bacterial resistance, significantly prolong after effect time of antibiotics on bacteria, thereby effectively improving the antibacterial effect.
[目的]为了探明氟苯尼考双混悬型乳剂的体外药效学特征。[方法]以氟苯尼考注射液为对照组对氟苯尼考双混悬型乳剂进行5种细菌的最低抑菌浓度(MIC)、最低杀菌浓度(MBC)和耐药突变选择窗(MSW)的测定,对鼠伤寒沙门氏菌进行抗生素后效应(PAE)和抗生素后亚抑菌浓度效应(PASME)的测定。[结果]相对于普通注射液氟苯尼考双混悬型乳剂对5种细菌的MIC和MBC无明显变化,但其明显缩小了对5种细菌的MSW(P<0.01),并且明显的延长了对鼠伤寒沙门氏菌PAE和PASME(P<0.01)。[结论]氟苯尼考双混悬型乳剂在体外能够减小细菌耐药几率,明显延长抗生素对细菌的后效应时间,从而有效地提高抗菌效果。
