Chitosan nanoparticles affect the acid tolerance response in adhered cells of Streptococcus mutans.
Caries Res
; 45(6): 501-5, 2011.
Article
em En
| MEDLINE
| ID: mdl-21912130
ABSTRACT
In this study we evaluated the effect of chitosan nanoparticles on the acid tolerance response (ATR) of adhered Streptococcus mutans. An ATR was induced by exposing S. mutans to pH 5.5 for 2 h and confirmed by exposing the acid-adapted cells to pH 3.5 for 30 min, with the majority of cells appearing viable according to the LIVE/DEAD® technique. However, when chitosan nanoparticles were present during the exposure to pH 5.5, no ATR occurred as most cells appeared dead after the pH 3.5 shock. We conclude that the chitosan nanoparticles tested had the ability to hinder ATR induction in adhered S. mutans.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Streptococcus mutans
/
Estresse Fisiológico
/
Adaptação Fisiológica
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Quitosana
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article