大蒜素标准品DATS体外抗粪肠球菌生物膜作用的研究

目的:探讨不同浓度大蒜素对照品二烯丙基化三硫(dially trisulfide,DATS)体外对粪肠球菌生物膜的作用。方法:体外培养形成粪肠球菌生物膜,分别经1280、2560、5120 mg/L浓度的DATS作用后,采用MTT法观察DATS对生物膜粪肠球菌的抑菌率。结果:1280 mg/L DATS对对数期和饥饿期的生物膜粪肠球菌抑菌率约71%,显著高于对稳定期生物膜粪肠球菌的抑菌率58%,差异具有统计学意义(P<0.05),随着药物浓度的增高,抑菌率增高。结论:DATS对生物膜中的粪肠球菌具有明显杀灭或抑制作用。

Effects of Standard Allicin on Enterococcus Faecalis Biofilms Control: an in vitro Study

Objective: To investigate the antibacterial efficacy of different concentrations dially trisulfide (DATS) on the biofilms of Enterococcus faecalis (E. faecalis) in vitro. Methods: E. faecalis was cultured in vitro to form the bacterial biofilm of different growth periods. Different concentrations of DATS, i.e. 1280μg/mL, 2560μg/mL and 5120μg/mL, were added to E. faecalis biofilms in different growth periods, and the bacteriostasis rates were measured by MTT method. Results: The bacteriostatic rates of 1280μg/mL DATS were about 71% in logarithmic phase and hunger phase, which were significantly higher than that in stability phase with bacteriostasis rate of 58% (P<0.05). DATS in concentration of 2560μg/mL and 5120μg/mL showed better antibacterial efficacy than that of 1280μg/mL, indicating that the antibacterial efficacy of DATS was in a concentration-dependent manner (P<0.05). Conclusion: DATS played a role in suppressing E. faecalis in the biofilm in vitro.