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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Int J Antimicrob Agents. 2016 Dec 23;49(2):224–232. doi: 10.1016/j.ijantimicag.2016.10.025

Table 2.

Summary of changes in bacterial density (log10 CFU/mL) at 4, 8 and 24 h compared with the initial inoculum (0 h) for polymyxin B (PMB) in combination with meropenem (MEM).

Strain Time (h) Control PMB 0.5 mg/L PMB 1 mg/L PMB 2 mg/L PMB 4 mg/L PMB 16 mg/L

MEM 20 mg/L MEM 40 mg/L MEM 60 mg/L MEM 120 mg/L MEM 20 mg/L MEM 40 mg/L MEM 60 mg/L MEM 120 mg/L MEM 20 mg/L MEM 40 mg/L MEM 60 mg/L MEM 120 mg/L MEM 20 mg/L MEM 40 mg/L MEM 60 mg/L MEM 120 mg/L MEM 20 mg/L MEM 40 mg/L MEM 60 mg/L MEM 120 mg/L
BRKP30 4 2.28 4.60 4.37 6.18 4.93 3.81 4.07 4.84 6.03 5.03 6.18 6.21 6.05 6.17 6.16 6.12 6.01 6.23 6.10 6.11 6.10
8 2.80 6.20 4.85 6.18 6.23 6.22 6.27 6.14 6.03 6.33 6.18 6.21 6.05 6.17 6.16 6.12 6.01 6.23 6.10 6.11 6.10
24 2.93 6.20 6.15 6.18 6.23 6.22 6.27 6.14 6.03 6.33 6.18 6.21 6.05 6.17 6.16 6.12 6.01 6.23 6.10 6.11 6.10
BRKP20 4 2.45 6.24 6.26 6.26 6.20 4.88 4.92 6.10 6.19 6.15 6.18 4.94 6.15 6.15 6.16 6.23 6.18 6.18 6.08 6.18 6.23
8 2.94 6.24 6.26 6.26 6.20 6.18 6.23 6.10 6.19 6.15 6.18 6.24 6.15 6.15 6.16 6.23 6.18 6.18 6.08 6.18 6.23
24 3.10 6.24 6.26 6.26 6.20 6.18 6.23 6.10 6.19 6.15 6.18 6.24 6.15 6.15 6.16 6.23 6.18 6.18 6.08 6.18 6.23
BRKP22 4 2.42 6.24 6.22 6.23 6.41 6.06 6.01 6.01 6.13 6.03 6.02 6.01 6.05 6.17 6.16 6.12 6.01 6.23 6.10 6.11 6.10
8 2.89 6.24 6.22 6.23 6.41 6.06 6.01 6.01 6.13 6.03 6.02 6.01 6.05 6.17 6.16 6.12 6.01 6.23 6.10 6.11 6.10
24 2.98 6.24 6.22 6.23 6.41 6.06 6.01 6.01 6.13 6.03 6.02 6.01 6.05 6.17 6.16 6.12 6.01 6.23 6.10 6.11 6.10
BRKP31 4 2.42 6.19 6.22 6.35 6.19 6.28 6.21 6.29 6.24 6.20 6.24 6.35 6.21 6.29 6.38 6.25 6.31 6.23 6.30 6.24 6.21
8 2.91 6.19 6.22 6.35 6.19 6.28 6.21 6.29 6.24 6.20 6.24 6.35 6.21 6.29 6.38 6.25 6.31 6.23 6.30 6.24 6.21
24 3.17 6.19 4.92 6.35 6.19 6.28 6.21 6.29 6.24 6.20 6.24 6.35 6.21 6.29 6.38 6.25 6.31 6.23 6.30 6.24 6.21
BRKP27 4 1.30 5.04 5.11 6.31 6.34 6.09 6.11 4.73 6.20 4.78 6.04 6.09 6.21 6.11 6.19 6.20 6.09 6.09 6.15 6.25 6.11
8 2.51 6.34 6.41 6.31 6.34 6.09 6.11 6.03 6.20 6.08 6.04 6.09 6.21 6.11 6.19 6.20 6.09 6.09 6.15 6.25 6.11
24 2.51 6.34 6.41 6.31 6.34 6.09 6.11 6.03 6.20 6.08 6.04 6.09 6.21 6.11 6.19 6.20 6.09 6.09 6.15 6.25 6.11
BRKP21 4 2.34 6.16 6.18 6.18 6.18 6.15 6.19 6.19 6.17 6.11 6.20 6.25 6.11 6.07 6.20 6.13 6.09 6.05 6.06 6.01 6.02
8 2.85 6.16 6.18 6.18 6.18 6.15 6.19 6.19 6.17 6.11 6.20 6.25 6.11 6.07 6.20 6.13 6.09 6.05 6.06 6.01 6.02
24 3.07 6.16 6.18 6.18 6.18 6.15 6.19 6.19 6.17 6.11 6.20 6.25 6.11 6.07 6.20 6.13 6.09 6.05 6.06 6.01 6.02
BRKP67 4 2.50 −2.77 4.31 4.31 4.24 3.30 4.52 4.88 4.87 3.77 4.79 6.14 4.22 4.70 6.00 6.01 6.00 6.09 6.10 6.11 6.11
8 2.83 −1.33 4.91 4.61 4.85 −1.86 6.12 6.18 6.17 3.29 6.09 6.14 4.40 4.70 6.00 6.01 6.00 6.09 6.10 6.11 6.11
24 3.15 2.59 −0.74 6.21 3.35 1.10 −2.05 −2.40 4.87 0.69 −1.43 4.84 3.44 −1.70 −1.01 −1.83 6.00 6.09 6.06 6.01 6.02
BRKP76 4 2.34 4.57 6.42 5.14 5.08 4.31 6.29 6.30 6.31 4.34 5.53 4.15 5.70 3.48 6.10 6.07 6.06 6.11 6.16 6.18 6.16
8 2.75 −2.32 3.44 5.14 6.38 −2.75 6.29 6.30 6.31 −2.46 4.23 5.75 5.70 −2.30 4.02 6.07 6.06 6.11 6.16 6.18 6.16
24 2.89 2.51 2.34 4.14 −2.05 2.93 3.54 −1.77 4.54 3.32 −0.16 −2.20 5.70 2.76 4.37 6.07 6.06 6.11 6.16 6.18 6.16
BRKP61 4 2.37 3.26 3.05 4.28 4.93 3.22 3.88 4.86 6.23 3.55 4.45 4.45 6.00 4.11 6.03 4.70 6.10 6.03 6.03 6.05 6.24
8 2.94 −1.28 −1.84 −2.93 4.93 −1.68 −2.53 3.61 4.45 −2.38 3.08 3.98 6.00 −2.98 3.62 6.00 6.10 4.26 6.03 6.05 6.24
24 3.01 2.76 2.56 2.37 −0.77 2.76 2.21 0.38 4.23 2.74 0.33 −1.14 −2.70 0.37 −1.73 3.85 6.10 −2.07 4.72 6.05 6.24
BRKP28 4 2.33 2.18 2.24 2.29 1.64 2.19 2.18 2.14 .83 2.13 1.99 1.43 −0.11 1.93 1.73 1.25 −1.03 1.10 −0.27 −0.82 −2.31
8 2.79 2.76 2.67 2.60 1.99 2.90 2.74 2.57 2.33 2.90 2.97 2.82 1.62 2.88 2.87 2.78 −0.58 2.61 −0.16 −0.86 3.03
24 2.98 2.96 2.99 3.03 2.76 3.20 2.93 2.98 3.07 3.18 3.12 3.04 3.08 3.11 3.15 3.20 3.03 3.07 3.09 3.06 2.84