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. 2021 Jun 2;21:164. doi: 10.1186/s12866-021-02238-7

Table 2.

The role of PMQR in 31 FQ-sensitive CRKP isolates

Number of isolates Carrying PMQR (frequency) Mutation in QRDRs CIP MIC (μg/mL)
8 No substitution ≤0.25 (8 isolates)
23

aac(6′)-Ib-cr (11);

qnrS1 (9);

qnrB1 (1);

aac(6′)-Ib-cr, qnrS1 (11);

aac(6′)-Ib-cr, qnrS1, qnrB4 (1)

No substitution

0.5 (10 isolates)

1 (1 isolate)

≤0.25 (12 isolates)

CIP ciprofloxacin, MIC minimum inhibitory concentration, PMQR plasmid-mediated quinolone resistance, CRKP carbapenem-resistant Klebsiella pneumoniae, FQ fluoroquinolone