Shanghai Journal of Stomatology ›› 2020, Vol. 29 ›› Issue (5): 456-461.doi: 10.19439/j.sjos.2020.05.002

• Original Articles • Previous Articles     Next Articles

Effect of different fluence rates applied in curcumin-photodynamic therapy on Candida albicans biofilms

MA Jing1, LI Ji-yang2, YANG Qiao-zhen1, BAI Yu1, ZHANG Cheng1, SUN Hong-ying1   

  1. 1. Department of Stomatology, Huashan Hospital, Fudan University. Shanghai 200040;
    2. School of Pharmacy, Fudan University. Shanghai 201203, China
  • Received:2019-03-27 Revised:2019-05-07 Online:2020-10-25 Published:2020-11-02
  • About author:E-mail:niuchg09@alumni.sjtu.edu.cn

Abstract: PURPOSE: In this study, the inactivation effect of different fluence rates on Candida albicans biofilms during curcumin-photodynamic therapy was investigated in vitro. METHODS: The standard Candida albicans and clinical isolated Candida albicans were selected as model fungus and different fluence rates (12, 22, 42, 62, 82, 102 mW/cm2) during curcumin-photodynamic therapy were applied to inactivate Candida albicans biofilm. To evaluate the inactivation effect, XTT assay and Live/Dead kit were employed to quantify and visualize the activities of Candida albicans biofilms. The data were analyzed with SPSS 19.0 software package. RESULTS: When 40 μmol/L of curcumin was applied followed by 4 min illumination, both standard Candida albicans and clinical isolated Candida albicans biofilms were greatly inactivated along with the increase of fluence rates. When fluence rate increased to 102 mW/cm2, there was no significant difference between the experimental group and the previous experimental group(P>0.05). CONCLUSIONS: Fluence rate plays an important role in inactivation of Candida albicans biofilms during curcumin-photodynamic therapy, with optimized value of fluence rate of 82 mW/cm2 in this study.

Key words: Curcumin, Photodynamic, Fluence rate, Candida albicans, Biofilms

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