Research Article

Prevalence of Plasmid-Mediated Quinolone Resistance Determinants and OqxAB Efflux Pumps among Extended-Spectrum -Lactamase Producing Klebsiella pneumoniae Isolated from Patients with Nosocomial Urinary Tract Infection in Tehran, Iran

Table 3

Distribution of ESBL-encoding genes and PMQR genes among 247 ESBL producers.

Resistance genesNumber (%)

blaCTX-M185 (74.9)
blaTEM173 (70)
aac(6)-Ib 170 (68.8)
blaSHV148 (59.9)
oqxA 140 (56.7)
oqxB 130 (54.6)
qnrA 9 (3.6)
qepA 5 (2)
qnrB 4 (1.6)
qnrS 3 (1.2)