Abstract:
:The aim of this study was to evaluate the effects of photodynamic therapy (PDT) using rose bengal or erythrosine with light emitting diode (LED) on Candida albicans planktonic cultures and biofilms. Seven C. albicans clinical strains and one standard strain (ATCC 18804) were used. Planktonic cultures and biofilms of each C. albicans strain were submitted to the following experimental conditions: (a) treatment with rose bengal and LED (RB+L+); (b) treatment with erythrosine and LED (E+L+); and (c) control group, without LED irradiation or photosensitiser treatment (P-L-). After irradiation of the planktonic cultures and biofilms, the cultures were seeded onto Sabouraud dextrose agar (37 °C at 48 h) for counting of colony-forming units (CFU ml(-1) ) followed by posterior anova and Tukey's test analyses (P < 0.05). The biofilms were analysed using scanning electron microscopy (SEM). The results revealed a significant reduction of planktonic cultures (3.45 log(10) and 1.97 log(10) ) and of biofilms (<1 log(10) ) for cultures that were subjected to PDT mediated using either erythrosine or rose bengal, respectively. The SEM data revealed that the PDT was effective in reducing and destroying of C. albicans blastoconidia and hyphae. The results show that erythrosine- and rose bengal-mediated PDT with LED irradiation is effective in treating C. albicans.
journal_name
Mycosesjournal_title
Mycosesauthors
Costa AC,Rasteiro VM,Pereira CA,Rossoni RD,Junqueira JC,Jorge AOdoi
10.1111/j.1439-0507.2011.02042.xsubject
Has Abstractpub_date
2012-01-01 00:00:00pages
56-63issue
1eissn
0933-7407issn
1439-0507journal_volume
55pub_type
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