Therapeutic low-intensity red laser for herpes labialis on plasmid survival and bacterial transformation

Autor: Mauro Geller, Giovanni Augusto Castanheira Polignano, Keila da Silva Canuto, Gleica Rocha Teixeira, Adenilson de Souza da Fonseca, Flavia de Paoli, Roberta da Silva Marciano, Luiz Philippe da Silva Sergio, Oscar Roberto Guimarães
Rok vydání: 2013
Předmět:
Zdroj: Photochemical & Photobiological Sciences. 12:930-935
ISSN: 1474-9092
1474-905X
DOI: 10.1039/c3pp25394e
Popis: A low-intensity laser is used in treating herpes labialis based on the biostimulative effect, albeit the photobiological basis is not well understood. In this work experimental models based on Escherichia coli cultures and plasmids were used to evaluate effects of low-intensity red laser on DNA at fluences for treatment of herpes labialis. To this end, survival and transformation efficiency of plasmids in E. coli AB1157 (wild type), BH20 (fpg/mutM(-)) and BW9091 (xthA(-)), content of the supercoiled form of plasmid DNA, as well as nucleic acids and protein content from bacterial cultures exposed to the laser, were evaluated. The data indicate low-intensity red laser: (i) alters the survival of plasmids in wild type, fpg/mutM(-) and xthA(-)E. coli cultures depending of growth phase, (ii) alters the content of the supercoiled form of plasmids in the wild type and fpg/mutM(-)E. coli cells, (iii) alters the content of nucleic acids and proteins in wild type E. coli cells, (iv) alters the transformation efficiency of plasmids in wild type and fpg/mutM(-)E. coli competent cells. These data could be used to understand positive effects of low-intensity lasers on herpes labialis treatment.
Databáze: OpenAIRE
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