Research Article

Effect of Coptis chinensis on Biofilm Formation and Antibiotic Susceptibility in Mycobacterium abscessus

Figure 1

Susceptibility of M. abscessus to C. chinensis or berberine-HCl. The CFU formed of M. abscessus in 7H9 medium alone (the control group) and after treatment with the indicated concentrations of C. chinensis or berberine-HCl were counted by plating. Survival CFU and the relative percentage were expressed. As determined by the Mann–Whitney Rank Sum Test, statistically significant reductions (asterisk) in relative percentage of survival CFU of M. abscessus were observed for 1/4 × MIC, 1/2 × MIC, MIC, 2 × MIC, and 4 × MIC following the addition of Coptis chinensis (a) and 1/4 × MIC, 1/2 × MIC, MIC, and 2 × MIC following the addition of berberine-HCl (b). CFU: colony forming unit. CTL: control. MIC: minimal inhibitory cncentration. Error bars indicate standard deviations. and .
(a)
(b)