TABLE 1

Concentrations of polymyxins used in this study

Polymyxin (mM)aConcn
0.250.51.01.52.02.53.04.05.0
Colistin (mg/liter)2905811,1621,7442,3252,9063,4874,6955,812
Polymyxin B (mg/liter)2995981,1961,7952,3932,9913,5894,7865,982
CMS (mg/liter)4088161,6332,4493,2664,0824,8986,5318,164
  • a The average molecular weights of colistin, polymyxin B, and CMS were 1,162.47, 1,196.49, and 1,632.89, respectively.