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Table 1 Minimum inhibitory concentrations (MICs) of the imipenem after treatment with efflux pump inhibitors against clinical CRAB strains

From: Regulation of overexpressed efflux pump encoding genes by cinnamon oil and trimethoprim to abolish carbapenem-resistant Acinetobacter baumannii clinical strains

Strains

Treatment

MICs (mg/L)

IMPa

+TMPb

+OMPc

+CCCPd

+Cinnamon oil

+Thyme oil

+Clove oil

+Carraway oil

ACN 91

32

8

8

4

4

8

8

32

ACN 92

16

8

2

4

4

8

4

4

ACN 93

8

4

2

2

4

4

4

4

ACN 94

16

4

8

2

4

4

8

8

ACN 95

16

4

4

2

2

8

8

8

ACN 96

16

4

4

2

2

8

8

8

ACN 97

128

8

16

8

32

16

16

16

ACN 98

64

8

4

8

2

16

16

8

ACN 99

256

8

128

16

16

16

64

64

ACN 100

1024

64

64

64

64

64

256

1024

ACN 70

64

16

8

4

8

16

8

16

ACN 71

64

8

16

4

8

16

8

16

ACN 72

64

8

8

4

32

16

8

16

ACN 73

64

16

16

8

32

16

8

16

ACN 74

32

8

16

4

4

8

8

32

ACN 75

32

8

4

2

2

8

8

32

ACN 76

32

4

8

4

8

16

8

32

ACN 77

32

8

8

4

2

16

8

32

ACN 78

64

16

8

4

8

8

16

16

ACN 79

64

8

16

8

8

16

16

8

ACN 80

64

8

16

8

8

NA

NA

NA

ACN 81

32

8

8

2

8

NA

NA

NA

ACN 82

128

32

64

16

2

NA

NA

NA

ACN 83

64

16

16

8

2

NA

NA

NA

ACN 84

128

16

16

16

32

NA

NA

NA

ACN 23

256

64

16

16

16

NA

NA

NA

ACN 16

128

16

16

16

16

NA

NA

NA

ACN 47

64

8

32

8

2

NA

NA

NA

ACN 65

32

4

8

8

2

NA

NA

NA

ACN 54

512

128

64

8

16

NA

NA

NA

ACN 13

512

32

64

16

16

NA

NA

NA

ACN 43

16

2

4

4

2

NA

NA

NA

ACN 17

256

8

32

32

16

NA

NA

NA

ACN 14

128

32

32

4

8

NA

NA

NA

ACN 59

128

32

64

4

8

NA

NA

NA

ACN 1

256

32

16

16

16

NA

NA

NA

ACN 15

16

2

4

2

2

NA

NA

NA

  1. aIMP Imipenem, bTMP Trimethoprim, cOMP Omeprazole, dCCCP Carbonyl cyanide 3-chlorophenylhydrazone, NA No action