Table 5 Characteristics of determined ESBL genes and the detection methods
Study | Predominant ESBL gene | Harbouring ESBL genes | Identification methods | |||
|---|---|---|---|---|---|---|
Name | Frequency (n) | Number | Specific genes | Screening | Confirmatory | |
[20] | blaTEM | 26 (27) | 27 | CTX-M, TEM, SHV | E-test | Disk diffusion |
[13] | blaCTX-M | 127(127) | 125 | CTX-M, TEM, SHV,OXA,VEB | E-test | Combination disk |
[8] | blaOXA | 52(57) | – | OXA, TEM, SHV | – | E-test |
[3] | blaCTX-M | 85(93) | 20 | CTX-M, SHV, OXA, TEM | Disk diffusion | E- test |
[39] | – | – | – | – | – | – |
[38] | blaCTX-M | 84(94) | 90 | CTX-M, TEM, SHV | Disk diffusion | PCR amplification |
[37] | blaCTX-M | 14(22) | – | CTX-M, SHV | – | Disk combination |
[27] | blaSHV | 26(31) | 22 | SHV, TEM, CTX-M | DDST | Combination disk |
[29] | – | – | – | – | – | – |
[4] | blaSHV & blaCTX-M | 18(20) | 13 | CTX-M, SHV, VEB | E-test | DDST |
[36] | blaCTX-M | 9(9) | 6 | CTX-M, TEM | E-test | DDST |
[16] | blaSHV | 33(36) | 32 | SHV, TEM, CTX-M, OXA | – | Disk diffusion |
[5] | blaCTX-M | 63(67) | 3 | CTX-M, TEM, SHV | – | Multiplex PCR |
[35] | – | – | – | – | – | DDST |
[15] | – | – | – | – | Disk diffusion, E-test | Disk combination |
[22] | blaSHV | 106(121) | 35 | SHV, TEM, CTX-M | Disk diffusion | Disk combination |
[31] | – | – | – | – | – | Micro-dilution broth |
[17] | blaSHV | 46(51) | 4 | SHV, CTX-M, OXA, TEM | Disk diffusion | DDST |
JA et al., 2010 | blaCTX-M | 40(72) | 32 | CTX-M, SHV | Disk diffusion | Disk combination |
[14] | blaCTX-M | 6(6) | 6 | CTX-M, SHV, TEM | E-test | Disk diffusion |
[18] | blaCTX-M | 17(17) | 16 | TEM, SHV, OXA, CTX-M | – | PCR |