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Table 3 The MIC and MBC values of seven antimicrobial agents against three strains exposed to imipenem

From: Evolution of carbapenem resistance in klebsiella pneumoniae and escherichia coli carrying blaNDM−1 gene: imipenem exposure results in sustained resistance memory of strains in vitro

Strains

imipenem(µg/mL) MIC(µg/mL)/MBC(µg/mL)

 

IPM

MEM

CXM

CAZ

CSSS

PSTS

LEV

K.pneumoniae TH-P12158

0

0.5/1

0.5/1

8/32

2/8

8/32

8/32

0.125/0.25

4

4/8

1/4

8/32

2/8

8/32

8/32

0.125/0.25

8

8/16

1/4

16/64

2/8

8/32

16/64

0.125/0.25

12

8/16

2/8

16/64

4/16

8/32

16/64

0.125/0.25

12 to 8

8/16

2/8

16/64

4/16

8/32

16/64

0.125/0.25

8 to 4

8/16

2/8

16/64

4/16

8/32

16/64

0.125/0.25

4 to 0

8/16

2/8

16/64

4/16

8/32

16/64

0.125/0.25

12 to 0

8/16

2/8

16/64

4/16

8/32

16/64

0.125/0.25

8 to 0

8/16

2/8

16/64

4/16

8/32

16/64

0.125/0.25

4 to 0

8/16

2/8

16/64

4/16

8/32

16/64

0.125/0.25

E.coli DH5α-blaNDM−1

0

0.25/1

0.25/0.5

8/32

2/8

1/2

8/8

0.125/0.25

 

4

2/4

0.5/1

16/32

2/8

4/16

16/16

0.125/0.25

 

8

4/8

0.5/1

16/32

2/8

4/16

16/16

0.125/0.25

 

12

4/8

0.5/1

16/32

4/16

4/16

16/16

0.125/0.25

 

12 to 8

4/8

0.5/1

16/32

4/16

2/8

16/16

0.125/0.25

 

8 to 4

4/8

0.5/1

16/32

4/16

2/8

16/16

0.125/0.25

 

4 to 0

4/8

0.5/1

16/32

4/16

2/8

16/16

0.125/0.25

 

12 to 0

4/8

0.5/1

16/32

4/16

2/8

16/16

0.125/0.25

 

8 to 0

4/8

0.5/1

16/32

4/16

2/8

16/16

0.125/0.25

 

4 to 0

4/8

0.5/1

16/32

4/16

2/8

16/16

0.125/0.25

E.coliBL21(DE3)-blaNDM−1

0

0.25/1

0.25/0.5

8/64

4/128

2/8

2/8

0.125/0.25

 

4

2/4

0.5/1

8/64

4/128

4/16

4/16

0.125/0.25

 

8

4/8

0.5/1

8/64

4/128

4/16

4/16

0.125/0.25

 

12

4/8

0.5/1

16/64

8/128

4/16

4/16

0.125/0.25

 

12 to 8

4/8

0.5/1

16/64

8/128

4/16

4/16

0.125/0.25

 

8 to 4

4/8

0.5/1

16/64

8/128

4/16

4/16

0.125/0.25

 

4 to 0

4/8

0.5/1

16/64

8/128

4/16

4/16

0.125/0.25

 

12 to 0

4/8

0.5/1

16/64

8/128

4/16

4/16

0.125/0.25

 

8 to 0

4/8

0.5/1

16/64

8/128

4/16

4/16

0.125/0.25

 

4 to 0

4/8

0.5/1

16/64

8/128

4/16

4/16

0.125/0.25

  1. IPM, imipenem; MEM, meropenem; CXM, cefuroxime; CAZ, ceftazidime; CSSS, cefoperazone sodium/sulbactam sodium; PSTS, piperacillin sodium /tazobactam sodium; LEV, levofloxacin