Imipenem-susceptible, meropenem-resistant Klebsiella pneumoniae producing
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1 AAC Accepts, published online ahead of print on 15 December 2014 Antimicrob. Agents Chemother. doi: /aac Copyright 2014, American Society for Microbiology. All Rights Reserved. 1 Imipenem-susceptible, meropenem-resistant Klebsiella pneumoniae producing 2 OXA-181 in Japan Shizuo Kayama 1, 2, Yumiko Koba 1, 2, 3, Norifumi Shigemoto 1, 4, Ryuichi Kuwahara 1, 2, 5, Tomoko Kakuhama 6, Kimie Kimura 6, Junzo Hisatsune 1, 2, Makoto Onodera 1, 3, Michiya Yokozaki 1, 3, Hiroki Ohge 1, 4, Motoyuki Sugai 1, 2 1. Project Research Center for Nosocomial Infectious Diseases, Hiroshima University, Kasumi, Minami-ku, Hiroshima City, Hiroshima Department of Bacteriology, Hiroshima University Graduate School of Biomedical & Health Sciences, Kasumi, Minami-ku, Hiroshima City, Hiroshima Clinical Laboratory, Hiroshima University Hospital, Kasumi Minami-ku Hiroshima , Japan Department of Infectious Diseases, Hiroshima University Hospital, Kasumi, 15 Minami-ku, Hiroshima City, Hiroshima Clinical laboratory, Hiroshima General Hospital of West Japan Railway Company, 1
2 17 Futaba-no-sato , Higashi-ku, Hiroshima, Hiroshima , Japan Clinical Laboratory, Hiroshima City Hospital, 7-33 Motomachi, Naka-ku, Hiroshima , Japan Corresponding to: Motoyuki Sugai, Department of Bacteriology, Hiroshima University Graduate School of Biomedical & Health Sciences, Kasumi Hiroshima, Hiroshima Phone (81) , Fax (81) , Running title: OXA-181 producing Klebsiella pneumoniae in Japan Key words: OXA-181, Klebsiella pneumoniae 2
3 28 Research letters 29 Enterobacteriaceae carrying the carbapenemase gene showing a paradoxical 30 resistant phenotype resistant to virtually all ß-lactams including meropenem but not imipenem is increasing (1, 2, 3). Here we report the first isolation of K. pneumoniae carrying bla OXA-181 in Japan showing a similar stealth-type resistant phenotype. In Apr 2010, a man was admitted to hospital in Mumbai, India with unidentified multiple organ failures. In June 2010, he was transferred to an ICU in Hiroshima, Japan. K. pneumoniae MS5166 was isolated from the urine sample of the patient. This isolate was resistant to almost all ß-lactams including meropenem but susceptible to imipenem following CLSI criteria (4): the MIC was 2 µg/ml for imipenem and 8 µg/ml for meropenem using the broth microdilution method. Further, MS5166 was resistant to aminoglycosides and fluoroquinolones: the MIC (μg/ml) was amikacin, >32; gentamicin, >8; tobramycin, >8; ciprofloxacin, >2 and levofloxacin, >4. 41 The metallo-ß-lactamase phenotype test (5) was negative. PCR for carbapenemase 42 genes using PCR with 11 universal primer sets (6) gave positive result for gene 43 encoding OXA-48-like. Direct sequencing of the amplicon indicated it is 100% 3
4 44 identical to the bla OXA-181, differing from bla OXA-48 by four amino acid substitutions. 45 The draft genome sequence of MS5166 generated using Illumina MiSeq 46 (Nextera paired-end library; 3,971,486 bp; fold coverage), assembled using CLC Genomics Workbench (CLC bio, Cambridge, MA), and generated using OSLay (7) indicated bla OXA-181 is on the chromosome (Fig. 1). The partial sequence of MS5166 containing bla OXA-181 was deposited in GenBank (accession no. AB972272). ISEcp1 is located upstream of bla OXA-181 reported previously (8, 9). bla OXA-181 is located on a deleted version of Tn2013 (2,961 bp), flanked by a 5-bp duplication of the target site (AAAGA) in the MS5166 chromosome between arginine ABC transporter substrate-binding protein and yjes gene (Fig. 1). Putative inverted repeat right (IRR) of ISEcp1 revealed weak identity with its original IRR sequence (8). Potron et al. previously showed Tn2013 integrated into the E. coli chromosome upon conjugation in vitro (8). This is the first clinical case of the chromosomally integrated 57 Tn2013 shown to be ISEcp1 associated with the bla OXA-181 in K. pneumoniae. 58 Resfinder search (10) of the draft genome sequence of MS5166 identified 59 bla CTX-M-15, bla TEM-1A, bla SHV-11, arma, aada2, aac(6')-ib, aada1 and aac(6')ib-cr 4
5 60 genes in addition to the bla OXA-181. The multilocus sequence typing of MS belonged to ST43, a minor cluster producing OXA-181 and CTX-M-15 in India (11). 62 The catalytic activities (k cat /K m ) of OXA-181 for imipenem was reportedly times higher than that for meropenem (12). We therefore sought the mechanism other than OXA-181 to explain imipenem susceptible meropenem resistant phenotype of MS5166. We identified a 14-bp deletion in ompk35 leaving a 22 amino acid sequence with a truncation of the large C-terminal region and a frame-shift mutation in ompk36 causing addition of two amino acids in loop 3 generating the variant, OmpK36V (13). Clinical K. pneumoniae producing ESBL, OmpK36V but lacking OmpK35, shows the imipenem susceptible meropenem resistant phenotype (13). Therefore the absence of OmpK35 and the frame-shift mutation in OmpK36 may be the mechanism for this peculiar carbapenem resistance phenotype in ESBL- and OXA-181-producing K. pneumoniae MS Acknowledgment 75 The authors thank Jim Nelson for editorial assistance. 5
6 76 77 Figure Legend 78 Figure 1. Structural comparison of MS5166, pkp3-a, and pt-oxa-181 around ISEcp1-bla OXA-181 (GenBank accession no. AB972272, JN and JQ996150, respectively). ORFs are represented by pentagons. Nucleotide letters in squares represent direct or inverted repeat (shaded base pairs are identical, and white base pairs are different), and target site duplications (repeat regions) are represented in squares. Tn2013 in MS5166 is found to be located between 438,346 and 438,347 bp on the chromosome of K. pneumoniae NTUH-K2044 genome (GenBank accession no. NC012731). References 1. Shigemoto N, Kuwahara R, Kayama S, Shimizu W, Onodera M, Yokozaki M, Hisatsune J, Kato F, Ohge H, Sugai M Emergence in Japan of an imipenem-susceptible, meropenem-resistant Klebsiella pneumoniae carrying bla IMP-6. Diagn Microbiol Infect Dis 72: Shigemoto N, Kayama S, Kuwahara R, Hisatsune J, Kato F, Nishio H, Yamasaki K, Wada Y, Sueda T, Ohge H, Sugai M A novel metallo-β-lactamase, IMP-34, in Klebsiella isolates with decreased resistance to imipenem. Diagn Microbiol Infect Dis 76:
7 Castanheira M, Deshpande LM, Mathai D, Bell JM, Jones RN, Mendes RE Early dissemination of NDM-1- and OXA-181-producing Enterobacteriaceae in Indian hospitals: report from the SENTRY Antimicrobial Surveillance Program, Antimicrobial Agents and Chemotherapy 55: Clinical and Laboratory Standards Institute (CLSI) Performance standards for antimicrobial susceptibility testing; 23th Informational Supplement (M100-S23). Wayne, PA: CLSI. 5. Kouda S, Ohara M, Onodera M, Fujiue Y, Sasaki M, Kohara T, Kashiyama S, Hayashida S, Harino T, Tsuji T, Itaha H, Gotoh N, Matsubara A, Usui T, Sugai M Increased prevalence and clonal dissemination of multidrug-resistant Pseudomonas aeruginosa with the bla IMP-1 gene cassette in Hiroshima. Journal of Antimicrobial Chemotherapy 64: Poirel L, Walsh TR, Cuvillier V, Nordmann P Multiplex PCR for detection of acquired carbapenemase genes. Diagn Microbiol Infect Dis 70: Richter DC, Schuster SC, Huson DH OSLay: optimal syntenic layout of unfinished assemblies. Bioinformatics 23: Potron A, Nordmann P, Lafeuille E, Maskari Al Z, Rashdi Al F, Poirel L Characterization of OXA-181, a carbapenem-hydrolyzing class D -lactamase from Klebsiella pneumoniae. Antimicrobial Agents and Chemotherapy 55: Villa L, Carattoli A, Nordmann P, Carta C, Poirel L Complete sequence of the IncT-type plasmid pt-oxa-181 carrying the bla OXA-181 carbapenemase gene from Citrobacter freundii. Antimicrobial Agents and Chemotherapy 57: Zankari E, Hasman H, Cosentino S, Vestergaard M, Rasmussen S, Lund O, Aarestrup FM, Larsen MV Identification of acquired antimicrobial resistance genes. Journal of Antimicrobial Chemotherapy 67: Lascols C, Peirano G, Hackel M, Laupland KB, Pitout JDD Surveillance and molecular epidemiology of Klebsiella pneumoniae isolates that produce carbapenemases: first report of OXA-48-like enzymes in North America. Antimicrobial Agents and Chemotherapy 57:
8 Potron A, Rondinaud E, Poirel L, Belmonte O, Boyer S, Camiade S, Nordmann P Genetic and biochemical characterization of OXA-232, a carbapenem-hydrolysing class D β-lactamase from Enterobacteriaceae. Int J Antimicrob Agents 41: García-Fernández A, Miriagou V, Papagiannitsis CC, Giordano A, Venditti M, Mancini C, Carattoli A An ertapenem-resistant extended-spectrum- -lactamase-producing Klebsiella pneumoniae clone carries a novel OmpK36 porin variant. Antimicrobial Agents and Chemotherapy 54: Downloaded from on July 15, 2018 by guest 8
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