|
|
| Canuto,K.S.; Sergio,L.P.S.; Guimarães,O.R.; Geller,M.; Paoli,F.; Fonseca,A.S.. |
| Low-level lasers are used at low power densities and doses according to clinical protocols supplied with laser devices or based on professional practice. Although use of these lasers is increasing in many countries, the molecular mechanisms involved in effects of low-level lasers, mainly on DNA, are controversial. In this study, we evaluated the effects of low-level red lasers on survival, filamentation, and morphology of Escherichia colicells that were exposed to ultraviolet C (UVC) radiation. Exponential and stationary wild-type and uvrA-deficient E. coli cells were exposed to a low-level red laser and in sequence to UVC radiation. Bacterial survival was evaluated to determine the laser protection factor (ratio between the number of viable cells after... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DNA; Escherichia coli; Laser; Ultraviolet radiation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015001000012 |
| |
