Quaternary ammonium-induced multidrug tolerant Streptococcus mutans persisters elevate cariogenic virulence in vitro
Ya-Ling Jiang , Wei Qiu , Xue-Dong Zhou , Hao Li , Jun-Zhuo Lu , Hockin HK Xu , Xian Peng , Ming-Yun Li , Ming-Ye Feng , Lei Cheng , Biao Ren
International Journal of Oral Science ›› 2017, Vol. 9 ›› Issue (11) : e7 -e7.
Quaternary ammonium-induced multidrug tolerant Streptococcus mutans persisters elevate cariogenic virulence in vitro
Investigation of bacterial cells that can evade treatment for tooth decay has suggested a novel approach that could improve treatment. Streptococcus mutans, the main bacteria involved in tooth decay, are targeted with antibiotics called quaternary ammoniums, but some bacterial cells, known as persisters, can evade these drugs by becoming dormant, reducing the effectiveness of treatment. Lei Cheng from Suchuan University, China, and colleagues have now investigated the development of persisters when the usually highly effective quaternary ammonium dimethylaminododecyl methacrylate was used against cultures of S. mutans. Persisters were present after treatment, and exhibited tolerance to six other antibiotics. However, increasing the amount of glucose in the cultures to stimulate metabolism in the persisters reduced their numbers, suggesting that such a novel approach may improve antibacterial treatment for tooth decay.
antibacterial quaternary ammoniums / dental caries / persistence / multidrug tolerance / Streptococcus mutans biofilms
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