南方医科大学学报2017，Vol.37Issue(6)：853-857,5.DOI:10.3969/j.issn.1673-4254.2017.06.25
强脉冲光对红毛癣菌的体外抑制作用
Effect of intense pulsed light on Trichophyton rubrum growth in vitro
摘要
Abstract
Objective To investigate the inhibitory effect of 420 nm intense pulsed light on Trichophyton rubrum growth in vitro and explore the mechanism. Methods The fungal conidia were divided into treatment group with intense pulse light irradiation and control group without irradiation. The surface areas of the fungal colonies were photographed before irradiation and on the 2nd and 3rd days after irradiation to observe the changes in fungal growth. The viability of the fungus in suspension was detected at 6 h after irradiation using MTT assay. The intracellular reactive oxygen species (ROS) level in the fungus was determined using DCFH-DA fluorescent probe, and the MDA content was detected using TBA method. Results Intense pulse light (420 nm) irradiation caused obvious injuries in Trichophyton rubrum with the optimal effective light dose of 12 J/cm2 in 12 pulses. At 6 h after the irradiation, the fungus in suspension showed a 30%reduction of viability (P<0.05), and the fungal colonies showed obvious growth arrest without further expansion. Compared to the control group, the irradiated fungus showed significant increases in ROS level and MDA content (P<0.05). Conclusion Intense pulse light (420 nm) irradiation can induce oxidative stress in Trichophyton rubrum to lead to fungal injuries and death.关键词
红色毛癣菌/强脉冲光/活性氧/氧化应激Key words
Trichophyton rubrum/intense pulsed light/reactive oxygen species/oxidative stress引用本文复制引用
黄昊,汤红峰,陈颖,郑秀芬,胡勇,王瑞华,黄美玲..强脉冲光对红毛癣菌的体外抑制作用[J].南方医科大学学报,2017,37(6):853-857,5.基金项目
佛山市卫生和计生局医学科研课题(20170295) （20170295）
佛山市十三五特色专科建设项目 （）
