Characterizing Mobilized Virulence Factors and Multidrug Resistance Genes in Carbapenemase-Producing Klebsiella pneumoniae in a Sri Lankan Hospital

被引：17
作者：
Zhu, Chendi [1 ]
Liyanapathirana, Veranja [2 ]
Li, Carmen [1 ]
Pinto, Vasanthi [3 ]
Hui, Mamie [1 ]
Lo, Norman [1 ]
Wong, Kam T. [1 ]
Dissanayake, Nilanthi [2 ]
Ip, Margaret [1 ]
机构：
[1] Chinese Univ Hong Kong, Dept Microbiol, Shatin, Hong Kong, Peoples R China
[2] Univ Peradeniya, Dept Microbiol, Fac Med, Kandy, Sri Lanka
[3] Univ Peradeniya, Dept Anesthesiol & Crit Care, Fac Med, Kandy, Sri Lanka
来源：
FRONTIERS IN MICROBIOLOGY | 2018年 / 9卷
关键词：
OXA-181; quinolone; yersiniabactin; Klebsiella pneumoniae; Sri Lanka; OXA-181-PRODUCING ESCHERICHIA-COLI; SPECTRUM-BETA-LACTAMASE; OXA-48-LIKE CARBAPENEMASES; PUBLIC-HEALTH; ENTEROBACTERIACEAE; SEQUENCE; OXA-181; OMPK36; MECHANISMS; EMERGENCE;
D O I：
10.3389/fmicb.2018.02044
中图分类号：
Q93 [微生物学];
学科分类号：
071005 ; 100705 ;
摘要：
Limited data is available on the epidemiology and characteristics of carbapenem-resistant Enterobacteriaceae (CRE) and their associated plasmids or virulence determinants from Sri Lanka. Through whole genome sequencing of CREs from the intensive care units of a Sri Lankan teaching hospital, we identified a carbapenemase gene, bla(OXA-181) in 10 carbapenemase-producing Klebsiella pneumoniae isolates (two strains of ST437 and eight strains of ST147) from 379 respiratory specimens. bla(OXA-181) was carried in three variants of ColE-type plasmids. K. pneumoniae strains with ompK36 variants showed high minimum inhibitory concentrations to carbapenem. Furthermore, genes encoding for extended spectrum beta-lactamases (ESBL), plasmidmediated quinolone resistance (PMQR) determinants (qnr, aac(6')-Ib-cr, and oqxAB) were present in all 10 strains. Amino acid substitution in chromosomal quinolone resistance-determining regions (QRDRs) gyrA (Ser8311e) and parC (Ser8011e) were also observed. All strains had yersiniabactin genes on mobile element ICEkp. Strict infection control practices and judicious use of antibiotics are warranted to prevent further spread of multidrug-resistant K. pneumoniae.
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