Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2017
Baseline incidence of intussusception in early childhood before rotavirus vaccine introduction, the Netherlands, January 2008 to December 2012.
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Gadroen Kartini, Kemmeren Jeanet M, Bruijning-Verhagen Patricia Cj, Straus Sabine Mjm, Weibel Daniel, de Melker Hester E, Sturkenboom Miriam Cjm
Аннотация
OBJECTIVE: Human candidiasis is typically treated with antifungal drugs, but the rise of drug-resistant strains of Candida spp. poses a serious problem, making treatment difficult. At the same time, photodynamic therapy (PDT) has drawn increasing attention from researchers for its potential to effectively inhibit multidrug-resistant pathogenic fungi and for its low tendency to induce drug resistance. This study's goal was to examine how a multidrug-resistant oral isolate of Candida albicans responded to a PDT that used a curcumin/H202 formulation as a photosensitizer and was exposed to various light sources.
MATERIALS AND METHODS: A commercial product containing curcumin/H2O2 3% was used as a photosensitizer and evaluated in a PDT treatment that can use two different light sources: traditional irradiation with 7 W light at λ = 460 nm or a new, never evaluated, polarized light source of 25 W with a wavelength range of λ = 380-3,400 nm. The antimicrobial activity of these procedures was assessed on a clinical oral isolate of Candida albicans, in terms of agar susceptibility test, growth curve behavior, and biofilm inhibition.
RESULTS: Both light sources were able to activate the photosensitizer formulation, suggesting a fungistatic activity vs. this C. albicans MDR strain. An interesting difference was observed in the cell-generation-time (CGTOD) after PDT treatment, where the polarized light was more active compared to the source of 460 nm. In fact, CGTOD was 16 and 8 hours, respectively.
CONCLUSIONS: The PDT evaluated here presented an inhibition window time, a crucial point for clinicians, who could activate an additional prophylactic treatment to resolve the clinical management of Candida infections in the oral cavity.
MATERIALS AND METHODS: A commercial product containing curcumin/H2O2 3% was used as a photosensitizer and evaluated in a PDT treatment that can use two different light sources: traditional irradiation with 7 W light at λ = 460 nm or a new, never evaluated, polarized light source of 25 W with a wavelength range of λ = 380-3,400 nm. The antimicrobial activity of these procedures was assessed on a clinical oral isolate of Candida albicans, in terms of agar susceptibility test, growth curve behavior, and biofilm inhibition.
RESULTS: Both light sources were able to activate the photosensitizer formulation, suggesting a fungistatic activity vs. this C. albicans MDR strain. An interesting difference was observed in the cell-generation-time (CGTOD) after PDT treatment, where the polarized light was more active compared to the source of 460 nm. In fact, CGTOD was 16 and 8 hours, respectively.
CONCLUSIONS: The PDT evaluated here presented an inhibition window time, a crucial point for clinicians, who could activate an additional prophylactic treatment to resolve the clinical management of Candida infections in the oral cavity.