Effect of Sophora flavescens alkaloid on the growth of vaginal lactobacilli:an in vitro study / 中国实用妇科与产科杂志

ABSTRACT

OBJECTIVE: To study the effects of Kushen gel on the growth of six common vaginal lactobacilli in vitro.METHODS: This study was conducted at Beijing Tsinghua Changgung Hospital from June 2018 to March 2019.Six different vaginal lactobacilli isolated from the healthy women of reproductive age in China were purified and cultured in vitro. The effect of different concentrations of Sophora flavescens alkaloid,which was the main active ingredient of Kushen gel,on the growth of various clinical lactobacillus isolates was observed by the agar dilution method.RESULTS: The minimum inhibitory concentration(MIC)of Sophora flavescens alkaloid to Lactobacillus rhamnosus was 40 mg/mL. The MICs for Lactobacillus crispatus,Lactobacillus jensenii,Lactobacillus gasseri and Lactobacillus reuteri were all 20 mg/mL. The MIC for Lactobacillus vaginalis was 10 mg/mL.When the concentration of Sophora flavescens alkaloid was lower than the MIC value,it had a certain effect on promoting proliferation of both Lactobacillus gasseri and Lactobacillus reuteri,but had no effect on Lactobacillus crispatus or Lactobacillus vaginalis.CONCLUSION: Under the clinical dosage,Kushen gel does not inhibit the growth of common vaginal lactobacilli,which is conducive to the recovery of the vaginal microecosystem.