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Dissemination and characterization of NDM-1-producing Acinetobacter pittii in an intensive care unit in China  J. Yang, Y. Chen, X. Jia, Y. Luo, Q. Song,

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Presentation on theme: "Dissemination and characterization of NDM-1-producing Acinetobacter pittii in an intensive care unit in China  J. Yang, Y. Chen, X. Jia, Y. Luo, Q. Song,"— Presentation transcript:

1 Dissemination and characterization of NDM-1-producing Acinetobacter pittii in an intensive care unit in China  J. Yang, Y. Chen, X. Jia, Y. Luo, Q. Song, W. Zhao, Y. Wang, H. Liu, D. Zheng, Y. Xia, R. Yu, X. Han, G. Jiang, Y. Zhou, W. Zhou, X. Hu, L. Liang, L. Han  Clinical Microbiology and Infection  Volume 18, Issue 12, Pages E506-E513 (December 2012) DOI: / Copyright © 2012 European Society of Clinical Infectious Diseases Terms and Conditions

2 FIG. 1 The distribution of the New Delhi metallo-β -lactamase-1 (NDM-1)-positive and NDM-1-negative Acinetobacter pittii isolates with identical pulsed-field gel electrophoresis (PFGE) type. The thick lines indicate the NDM-1-positive isolates; the thin lines indicate the NDM-1-negative isolates. Three strain types existed in the intensive care unit before the blaNDM-1-carrying plasmid was acquired. NDM-1-positive A. pittii isolates with PFGE type A had an outbreak from June to August 2008, while NDM-positive A. pitti isolates with PFGE type B and C emerged sporadically. Clinical Microbiology and Infection  , E506-E513DOI: ( / ) Copyright © 2012 European Society of Clinical Infectious Diseases Terms and Conditions

3 FIG. 2 Dendrogram of the pulsed-field gel electrophoresis patterns of some New Delhi metallo-β -lactamase-1 (NDM-1)-positive strains. Most isolates were of identical strains and had the same pulsed-field gel electrophoresis (PFGE) pattern. Strain H699 is a different subtype, although close genetic relatedness was observed between this strain and the strains isolated earlier. Strains H924 and H944 are distinct and have different PFGE patterns. Clinical Microbiology and Infection  , E506-E513DOI: ( / ) Copyright © 2012 European Society of Clinical Infectious Diseases Terms and Conditions

4 FIG. 3 Features of the genetic environment of blaNDM-1 in the pAP-D499 plasmid. The target gene lengths and the exact target site location are to scale. GC content is indicated in percentages. Gene names are abbreviated according to their corresponding proteins: aphA6 for aminoglycoside 3′-phosphotransferase; iso for phosphoribosylanthranilate isomerase; tat for the twin-arginine translocation pathway signal sequence protein; dct for the divalent cation tolerance protein; Δpac for truncated phospholipid acetyltransferase; and res for resolvase. Clinical Microbiology and Infection  , E506-E513DOI: ( / ) Copyright © 2012 European Society of Clinical Infectious Diseases Terms and Conditions

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