中国组织工程研究

• 生物材料临床实践 clinical practice of biomaterials • 上一篇    

根管充填材料加入茶多酚抑制白色念珠菌生物膜的生成

许  颖1,吕  庆1,康  梁2,张慧明3   

  1. 1佳木斯大学附属口腔医院牙体牙髓病二科,黑龙江省佳木斯市  154002
    2佳木斯大学附属口腔医院修复一科,黑龙江省佳木斯市  154002
    3佳木斯大学生命科学实验中心, 黑龙江省佳木斯市  154007
  • 收稿日期:2012-12-18 修回日期:2013-03-27 出版日期:2013-05-21 发布日期:2013-05-21
  • 通讯作者: 吕庆,硕士,佳木斯大学附属口腔医院牙体牙髓病二科,黑龙江省佳木斯市 154002 lq861229@126.com
  • 作者简介:许颖,女,1960年生,汉族,哈尔滨医科大学毕业,教授,硕士研究生导师,主要从事牙体牙髓病学研究。 xuyingjiayi@126.com

Root canal filling material added with tea polyphenols inhibits the generation of Candida albicans biofilm

Xu Ying1, Lü Qing1, Kang Liang2, Zhang Hui-ming3   

  1. 1 Second Department of Endodontics, Affiliated Stomatology Hospital of Jiamusi University, Jiamusi  154002, Heilongjiang Province, China
    2 First Department of Prosthodontics, Affiliated Stomatology Hospital of Jiamusi University, Jiamusi  154002, Heilongjiang Province, China 
    3 Experimental Center of Life Sciences, Jiamusi University, Jiamusi  154007, Heilongjiang Province, China
  • Received:2012-12-18 Revised:2013-03-27 Online:2013-05-21 Published:2013-05-21
  • Contact: Lü Qing, Master, Second Department of Endodontics, Affiliated Stomatology Hospital of Jiamusi University, Jiamusi 154002, Heilongjiang Province, China lq861229@126.com
  • About author:Xu Ying, Professor, Master’s supervisor, Second Department of Endodontics, Affiliated Stomatology Hospital of Jiamusi University, Jiamusi 154002, Heilongjiang Province, China xuyingjiayi@126.com

摘要:

背景:白色念珠菌生物膜是根管充填治疗预后的影响因素,茶多酚体外可能对白色念珠菌生物膜有抑菌作用,其抑菌机制可能通过影响或干扰相关耐药基因的表达而实现。
目的:探讨根管充填材料加入茶多酚对白色念珠菌生物膜的抑制作用。
方法:采用常量肉汤稀释法确定茶多酚体外对白色念珠菌生物膜的最小抑菌浓度,以此判断抑菌效果,然后用逆转录聚合酶链反应方法检测白色念珠菌耐药基因CDR1、CDR2和MDR1受茶多酚作用后的表达水平的变化。
结果与结论:茶多酚对白色念珠菌生物膜的最小抑菌浓度为11.5 g/L,反转录聚合酶链反应结果表明,相关耐药基因CDR1、CDR2的表达水平随着药物浓度的梯度增加而降低,在浓度为23 g/L及更高时mRNA的表达水平受到完全抑制,而药物浓度变化对耐药基因MDR1的表达影响较小。茶多酚体外对白色念珠菌生物膜起到了抑制作用,并对实验所选相关耐药基因CDR1、CDR2的表达过程明显产生了抑制作用。

关键词: 生物材料, 生物材料临床实践, 白色念珠菌, 生物膜, 耐药性, 细菌, 茶多酚, 茶色素, 根管充填材料, 性能, 根管糊剂, 抑菌药物, 抑菌作用, 口腔疾病, 聚合酶链反应, 基因型

Abstract:

BACKGROUND: Candida albicans biofilms can influence the prognosis of root canal filling, and tea polyphenols can in vitro inhibit the Candida albicans biofilm, while the antibacterial mechanism may play the role through influencing or interfering the expression of resistance gene.
OBJECTIVE: To investigate the inhibitory effect of root canal filling material added with tea polyphenols on Candida albicans biofilm.
METHODS: Constant broth dilution method was used to determine the minimal inhibitory concentration of tea polyphenols in vitro inhibited Candida albicans biofilms, in order to identify the inhibitory effect. Then the expressions of Candida albicans resistance genes CDR1, CDR2 and MDR1 were detected with reverse transcriptase polymerase chain reaction after inhibited with tea polyphenols.
RESULTS AND CONCLUSION: The minimum inhibitory concentration of tea polyphenols used to inhibit Candida albicans biofilm was 11.5 mg/mL. Reverse transcriptase polymerase chain reaction results showed that expressions of related resistance genes CDR1 and CDR2 were decreased with the gradient increasing of drug concentration, and when the concentration reached to 25 mg/mL or above, the mRNA expression level was completely inhibited, while the concentration of the resistance drug has less effect on the expression of resistance drug MDR1. Tea polyphenols has inhibitory effect on Candida albicans biofilm, and has significant inhibitory effect on the expressions of experimental selected resistance genes CDR1 and CDR2.

Key words: biomaterials, biomaterial clinical practice, Candida albicans, biofilm, drug resistance, bacteria, tea polyphenols, tea pigment, root canal filling material, performance, endodontic sealers, antibacterial drugs, antibacterial effect, oral diseases, polymerase chain reaction, genotype

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