OBJECTIVE: To assess antimicrobial activities of nanoemulsion (NE) to control the adhesion and biofilm formation by Streptococcus mutans by in vitro. DESIGN: In vitro antimicrobial susceptibility of nanoemulsion was determined as per National Committee for Clinical Laboratory Standards guidelines and agar diffusion, serial dilution technique for the determination of minimum inhibitory concentration and minimum bactericidal concentration (MIC/MBC). Efficacy was tested by kinetics of killing, biofilm assay and scanning electron microscopy. RESULTS: : NE concentrations ranging from 1:100 to 1:10,000 dilutions were effective against S. mutans as shown through MIC/MBC assays. NE showed antimicrobial activity against planktonic cells at high dilutions, confirmed by time kill studies. 4-day-old S. mutans biofilms were treated with NE; subsequent reductions of bacterial cell counts were noticed with decreasing dilutions. Staining of NE-treated biofilms with LIVE/DEAD BacLight resulted in dead cell areas of up to 48% in 1 min, 84% at 1h and significant (<0.05) increases in dead cell counts at all time points. Damage to cell membranes and cell walls of S. mutans by NE was demonstrated using scanning electron microscopy (SEM). CONCLUSION: These results suggest that nanoemulsion has effective antibacterial activity against S. mutans and may be a useful medication in the prevention of dental caries. Published by Elsevier Ltd.
OBJECTIVE: To assess antimicrobial activities of nanoemulsion (NE) to control the adhesion and biofilm formation by Streptococcus mutans by in vitro. DESIGN: In vitro antimicrobial susceptibility of nanoemulsion was determined as per National Committee for Clinical Laboratory Standards guidelines and agar diffusion, serial dilution technique for the determination of minimum inhibitory concentration and minimum bactericidal concentration (MIC/MBC). Efficacy was tested by kinetics of killing, biofilm assay and scanning electron microscopy. RESULTS: : NE concentrations ranging from 1:100 to 1:10,000 dilutions were effective against S. mutans as shown through MIC/MBC assays. NE showed antimicrobial activity against planktonic cells at high dilutions, confirmed by time kill studies. 4-day-old S. mutans biofilms were treated with NE; subsequent reductions of bacterial cell counts were noticed with decreasing dilutions. Staining of NE-treated biofilms with LIVE/DEAD BacLight resulted in dead cell areas of up to 48% in 1 min, 84% at 1h and significant (<0.05) increases in dead cell counts at all time points. Damage to cell membranes and cell walls of S. mutans by NE was demonstrated using scanning electron microscopy (SEM). CONCLUSION: These results suggest that nanoemulsion has effective antibacterial activity against S. mutans and may be a useful medication in the prevention of dental caries. Published by Elsevier Ltd.
Authors: Khaled Hosny; Hani Asfour; Waleed Rizg; Nabil A Alhakamy; Amal Sindi; Hala Alkhalidi; Walaa Abualsunun; Rana Bakhaidar; Alshaimaa M Almehmady; Sara Akeel; Sarah Ali; Adel Alghaith; Sultan Alshehri; Rasha Khallaf Journal: Int J Nanomedicine Date: 2021-08-13
Authors: Yun Fei Li; Hong Wu Sun; Rong Gao; Kai Yun Liu; Hua Qi Zhang; Qi Huan Fu; Sheng Li Qing; Gang Guo; Quan Ming Zou Journal: Int J Nanomedicine Date: 2015-01-09
Authors: Juçara R Franca; Mariana P De Luca; Tatiana G Ribeiro; Rachel O Castilho; Allyson N Moreira; Vagner R Santos; André A G Faraco Journal: BMC Complement Altern Med Date: 2014-12-12 Impact factor: 3.659