大理大学学报 ›› 2023, Vol. 8 ›› Issue (4): 28-33.

• 基础医学 • 上一篇    下一篇

美洲大蠊提取物C-3对白假丝酵母菌生物膜形成的作用

赵纯静,陈卫国,白 丽,武有聪   

  1. (大理大学基础医学院,云南大理 671000

  • 收稿日期:2022-08-18 修回日期:2022-09-28 出版日期:2023-04-15 发布日期:2023-04-25
  • 通讯作者: 武有聪,教授,博士,E-mail:youcongwu@163.com。
  • 作者简介:赵纯静,硕士研究生,主要从事细菌及真菌致病基因相关功能研究。
  • 基金资助:

    国家自然科学基金项目(8206038081660346);云南省中青年学术和技术带头人后备人才项目(202205AC160092

Effects of Periplaneta americana Extract C-3 on the Biofilm Formation of Candida albicans

Zhao ChunjingChen WeiguoBai liWu Youcong   

  1. Pre-clinical CollegeDali UniversityDaliYunnan  671000China

  • Received:2022-08-18 Revised:2022-09-28 Online:2023-04-15 Published:2023-04-25

摘要:

目的:探讨美洲大蠊提取物C-3(以下简称“C-3”)对白假丝酵母菌生物膜形成的影响,为研发抗真菌生物膜药物奠定基础。方法:将C-3加入白假丝酵母菌液与生物膜共孵育,分别设C-3高剂量组、C-3低剂量组、阳性对照组和阴性对照组,采用形态观察法及MTT法检测C-3对白假丝酵母菌生物膜形成的作用,计算生物膜抑制率评估不同浓度C-3对不同生长阶段白假丝酵母菌生物膜的作用效果。结果:C-3作用下白假丝酵母菌仍能形成生物膜样结构,高剂量组生物膜抑制率分别为25.1%13.9%,均低于氟康唑生物膜抑制率(79.3%);与不同生长阶段白假丝酵母菌生物膜孵育时,C-3对生长8 h生物膜抑制率最高(61.7%),其次是生长16 h24 h生物膜的抑制率(35.4%21.9%),氟康唑仅对生长4 h白假丝酵母菌生物膜有明显抑制作用(抑制率75.5%),对其他生长阶段白假丝酵母菌生物膜抑制作用不显著,C-3对白假丝酵母菌聚集和成熟期生物膜的抑制作用是氟康唑的2~9倍。结论:C-3主要在聚集和成熟阶段抑制白假丝酵母菌生物膜形成,抑制作用未见明显量效关系。

关键词:

"> font-size:10.5pt, ">白假丝酵母菌, 生物膜, 美洲大蠊提取物C-3

Abstract:

ObjectiveTo investigate the effect of Periplaneta americana extract C-3hereinafter referred to as "C-3"on the formation of Candida albicans biofilmso as to lay a foundation for the development of antifungal biofilm drugs. MethodsC-3 was added to Candida albicans solution and incubated with biofilm. C-3 high dose groupC-3 low dose grouppositive control group and negative control group were set up respectively. The effect of C-3 on the formation of Candida albicans biofilm was detected by morphological observation and MTT method. The inhibition rate of biofilm was calculated to evaluate the effect of different concentrations of C-3 on Candida albicans biofilm at different growth stages. ResultsCandida albicans could still form biofilm-like structure under the action of C-3. The inhibition rates of biofilm in high dose group were 25.1% and 13.9%which were lower than the inhibition rate of fluconazole biofilm79.3%. When incubated with Candida albicans biofilm at different growth stagesthe highest inhibition rate of C-3 on 8 h biofilms was 61.7%followed by the inhibition rates on 16 h and 24 h biofilms 35.4% and 21.9%), while fluconazole only had significant inhibitory effect on 4 h biofilms inhibition rate of 75.5%), and had no significant inhibitory effect on biofilms at other growth stages. The inhibitory effect of C-3 on Candida albicans aggregation and mature biofilm was 2-9 times that of fluconazole. ConclusionThe extract C-3 mainly inhibits the biofilm formation of Candida albicans in the aggregation and maturation stagesand the inhibition effect does not show a significant dose-effect relationship.

Key words:

"> font-size:10.5pt, ">Candida albicans, biofilm formation, Periplaneta americana extract C-3

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