Chitosan Nanoparticles Affect the Acid Tolerance Response in Adhered Cells of Streptococcus mutans | Zendy

Jessica Neilands | Zendy; Duncan S. Sutherland | Zendy; A. Resin | Zendy; Peter L. Wejse | Zendy; Luis E. Chávez de Paz | Zendy

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Chitosan Nanoparticles Affect the Acid Tolerance Response in Adhered Cells of <i>Streptococcus mutans</i>

Author(s) -

Jessica Neilands,

Duncan S. Sutherland,

A. Resin,

Peter L. Wejse,

Luis E. Chávez de Paz

Publication year - 2011

Publication title -

caries research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.355

H-Index - 100

eISSN - 1421-976X

pISSN - 0008-6568

DOI - 10.1159/000331206

Subject(s) - streptococcus mutans , chitosan , chemistry , microbiology and biotechnology , nanoparticle , nuclear chemistry , bacteria , biochemistry , biology , nanotechnology , materials science , genetics

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.

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