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Table 2 Antimicrobial susceptibility profiles of ESBL-producing E. coli isolates used in the conjugation experiments

From: Molecular characteristics of extended-spectrum β-lactamase-producing Escherichia coli isolated from the rivers and lakes in Northwest China

Isolates

MIC (μg/ml) of antimicrobials

Presence of

AMP

AMC

TIM

CTX

CAZ

CEX

FOX

MEM

TEC

TPH

CIP

GEN

SXT

β-lactamase genes

PMQR genes

Donors

 HH1609014

256

32

32

32

4

32

8

0.03

32

2

0.5

32

128

CTX-M-14

 

 XY1608045

512

32

16

32

64

4

2

0.125

64

32

64

32

32

CTX-M-14

aac(6′)-Ib-cr

 EH1607014

256

32

32

64

64

128

16

0.063

32

64

128

16

64

TEM-1, CTX-M-14

aac(6′)-Ib-cr

 WH1510002

256

32

32

32

128

64

1

0.063

0.25

1

2

4

16

CTX-M-9

qnrB, aac(6′)-Ib-cr

 BA1605022

512

64

16

64

8

64

2

0.063

64

0.25

32

2

64

CTX-M-9, CTX-M-14

qnrS, aac(6′)-Ib-cr

 QX1604103

256

64

32

4

256

128

32

0.03

128

128

128

64

256

TEM-1, SHV-2, CTX-M-14, CTX-M-123

qnrB, aac(6′)-Ib-cr

 SC1610005

512

64

32

32

8

64

32

0.03

32

2

16

32

128

TEM-1, SHV-12, CTX-M-15

qnrS, aac(6′)-Ib-cr

 XW1609038

256

32

32

32

4

64

16

4

0.25

0.5

64

128

64

CTX-M-15

qnrB, aac(6′)-Ib-cr

 GG1509025

256

64

16

4

2

32

2

0.125

128

64

2

64

64

TEM-1, SHV-12, CTX-M-65

aac(6′)-Ib-cr

 GG1610109

512

64

32

128

64

128

32

16

128

128

128

128

128

CTX-M-9, CTX-M-15, CTX-M-123, KPC-2, NDM-1, OXA-2

qepA, qnrS, aac(6′)-Ib-cr

Recipient J53AZr

4

1

1

0.125

0.063

0.063

0.125

0.03

0.25

0.125

0.063

0.25

0.25

  

Transformants

 Trans-HH1609014

128

16

16

16

1

8

8

0.03

0.5

0.25

0.125

0.25

0.5

CTX-M-14

 

 Trans-XY1608045

256

32

16

16

32

0.5

0.5

0.063

0.25

0.125

0.125

0.125

0.25

CTX-M-14

aac(6′)-Ib-cr

 Trans-EH1607014

256

16

16

32

32

64

8

0.03

0.125

0.125

0.5

0.125

1

CTX-M-14

aac(6′)-Ib-cr

 Trans-WH1510002

128

32

16

32

32

64

0.5

0.03

0.063

0.063

0.063

0.063

0.25

CTX-M-9

aac(6′)-Ib-cr

 Trans-BA1605022

128

32

32

64

1

16

0.5

0.03

0.5

0.063

0.125

0.03

0.5

CTX-M-9, CTX-M-14

qnrS, aac(6′)-Ib-cr

 Trans-QX1604103

128

32

32

1

64

64

16

0.125

0.125

0.125

0.5

0.125

2

TEM-1, CTX-M-14

aac(6′)-Ib-cr

 Trans-SC1610005

128

16

16

16

1

16

4

0.03

0.5

0.25

0.5

0.5

1

TEM-1, SHV-12, CTX-M-15

qnrS, aac(6′)-Ib-cr

 Trans-XW1609038

128

16

16

16

1

32

16

0.063

0.063

0.063

0.125

0.25

0.5

CTX-M-15

qnrB, aac(6′)-Ib-cr

 Trans-GG1509025

256

32

16

1

0.5

32

1

0.063

0.125

0.125

0.125

0.125

0.25

SHV-12, CTX-M-65

aac(6′)-Ib-cr

 Trans-GG1610109

256

32

32

32

32

64

16

0.03

0.25

0.063

1

0.25

0.5

CTX-M-15, CTX-M-123, KPC-2, NDM-1

qepA, qnrS, aac(6′)-Ib-cr