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Dissemination of metallo-β-lactamase-producing Pseudomonas aeruginosa of sequence type 235 in Asian countries

TLDR
To investigate the epidemiological traits of metallo-β-lactamase (MBL)-producing Pseudomonas aeruginosa (MPPA) clinical isolates collected by the Asian Network for Surveillance of Resistant Pathogens (ANSORP), ST235 might play a role in dissemination of MBL genes in Asian countries.
Abstract
OBJECTIVES To investigate the epidemiological traits of metallo-β-lactamase (MBL)-producing Pseudomonas aeruginosa (MPPA) clinical isolates collected by the Asian Network for Surveillance of Resistant Pathogens (ANSORP). METHODS A total of 16 MPPA clinical isolates were collected from six Asian countries in 2000 to 2009 by ANSORP. The MBL gene was detected by PCR amplification. The genetic organization of the class 1 integron carrying the MBL gene cassette was investigated by PCR mapping and sequencing. Southern blotting, repetitive sequence-based PCR and multilocus sequence typing (MLST) experiments were performed to characterize the isolates. RESULTS PCR and sequencing experiments detected the blaVIM-2 (n = 12), blaVIM-3 (n = 1), blaIMP-6 (n = 2) and blaIMP-26 (n = 1) genes. The MBL genes were located on the chromosome in all isolates except one. Furthermore, all the MBL genes were located in a class 1 integron. All the MPPA isolates from Malaysia, Thailand, Sri Lanka and Korea were identified as sequence type (ST) 235 by MLST. Three VIM-2-producing isolates from India were identified as ST773, and one isolate harbouring VIM-3 from Taiwan was identified as ST298. CONCLUSIONS P. aeruginosa ST235 might play a role in dissemination of MBL genes in Asian countries.

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Citations
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The increasing threat of Pseudomonas aeruginosa high-risk clones.

TL;DR: The population structure, epidemiology, antimicrobial resistance mechanisms and virulence of the P. aeruginosa high-risk clones are reviewed and the aspects related to their detection in the clinical microbiology laboratory and the implications for infection control and public health are discussed.
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Epidemiology and Characteristics of Metallo-β-Lactamase-Producing Pseudomonas aeruginosa.

TL;DR: It is essential to understand the epidemiology, resistance mechanism, and molecular characteristics of MPPA for infection control and prevention of a possible global health crisis.
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Geographic and Temporal Patterns of Antimicrobial Resistance in Pseudomonas aeruginosa Over 20 Years From the SENTRY Antimicrobial Surveillance Program, 1997-2016.

TL;DR: Over the 20 years of SENTRY Program surveillance, the rate of MDR P. aeruginosa infections has decreased, particularly in Latin America, which is a common cause of multidrug-resistant bloodstream infections and pneumonia in hospitalized patients.
References
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TL;DR: Extended-spectrum,-lactamases were first recognized in Europe, have become increasingly prevalent there, and are being reported around the world, including many sites in the United States.
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Metallo-β-lactamases: a last frontier for β-lactams?

TL;DR: The spread of metallo-β-lactamases presents a major challenge both for treatment of individual patients and for policies of infection control, exposing the substantial unpreparedness of public health structures in facing up to this emergency.
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Evaluation of the Hodge Test and the Imipenem-EDTA Double-Disk Synergy Test for Differentiating Metallo-β-Lactamase-Producing Isolates of Pseudomonas spp. and Acinetobacter spp.

TL;DR: In this paper, the performance of the Hodge test and those of the imipenem (IPM)-EDTA, ceftazidime (CAZ)-mercaptopropionic acid (MPA), and CAZ-sodium mercaptoacetic acid (SMA) double-disk synergy tests (DDSTs) were compared.
Journal ArticleDOI

Development of a Multilocus Sequence Typing Scheme for the Opportunistic Pathogen Pseudomonas aeruginosa

TL;DR: Comparison of the results of MLST with those of toxA typing and serotyping revealed that strains with identical STs may possess different toxA types and diverse serotypes, which reveals the strength of the MLST approach for obtaining a better understanding of the epidemiology of P. aeruginosa.
Journal ArticleDOI

Metallo-β-lactamases in clinical Pseudomonas isolates in Taiwan and identification of VIM-3, a novel variant of the VIM-2 enzyme

TL;DR: It is indicated that VIM-2 and its variant have become the most prevalent metalloenzymes in Pseudomonas in Taiwan.
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