scholarly journals Antibiotic Resistance and Mobile Genetic Elements in Extensively Drug-Resistant Klebsiella pneumoniae Sequence Type 147 Recovered from Germany

Antibiotics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 675
Author(s):  
Kyriaki Xanthopoulou ◽  
Alessandra Carattoli ◽  
Julia Wille ◽  
Lena M. Biehl ◽  
Holger Rohde ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
High Risk ◽  
Klebsiella Pneumoniae ◽  
Mobile Genetic Elements ◽  
Multidrug Resistant ◽  
Genetic Variations ◽  
Drug Resistant ◽  
Genetic Elements ◽  
Resistance Determinants ◽  
Extensively Drug Resistant

Mobile genetic elements (MGEs), especially multidrug-resistance plasmids, are major vehicles for the dissemination of antimicrobial resistance determinants. Herein, we analyse the MGEs in three extensively drug-resistant (XDR) Klebsiella pneumoniae isolates from Germany. Whole genome sequencing (WGS) is performed using Illumina and MinION platforms followed by core-genome multi-locus sequence typing (MLST). The plasmid content is analysed by conjugation, S1-pulsed-field gel electrophoresis (S1-PFGE) and Southern blot experiments. The K. pneumoniae isolates belong to the international high-risk clone ST147 and form a cluster of closely related isolates. They harbour the blaOXA-181 carbapenemase on a ColKP3 plasmid, and 12 antibiotic resistance determinants on an multidrug-resistant (MDR) IncR plasmid with a recombinogenic nature and encoding a large number of insertion elements. The IncR plasmids within the three isolates share a high degree of homology, but present also genetic variations, such as inversion or deletion of genetic regions in close proximity to MGEs. In addition, six plasmids not harbouring any antibiotic resistance determinants are present in each isolate. Our study indicates that genetic variations can be observed within a cluster of closely related isolates, due to the dynamic nature of MGEs. The mobilome of the K. pneumoniae isolates combined with the emergence of the XDR ST147 high-risk clone have the potential to become a major challenge for global healthcare.

Detection of extensively drug-resistant and hypervirulent Klebsiella pneumoniae ST15, ST147, ST377 and ST442 in Iran

2021 ◽  
Author(s):  
Sara Davoudabadi ◽  
Hossein Goudarzi ◽  
Mehdi Goudarzi ◽  
Abdollah Ardebili ◽  
Ebrahim Faghihloo ◽  
...  
Keyword(s):  
Klebsiella Pneumoniae ◽  
Pcr Amplification ◽  
Multidrug Resistant ◽  
Diffusion Method ◽  
Drug Resistant ◽  
Carbapenem Resistant ◽  
Extensively Drug Resistant ◽  
String Test ◽  
Pcr Method ◽  
Extensively Drug Resistance

Abstract In this study, we focused on the emergence of extensively drug-resistant (XDR), pandrug-resistant (PDR), and hypervirulent Klebsiella pneumoniae (hvKP) in Iran. During 2018 to 2020 a total of 52 K. pneumoniae isolates were collected from different clinical specimens. The hvKP isolates were identified by PCR amplification of virulence and capsular serotype-specific genes. Hypermucoviscous K. pneumoniae (hmKP) were identified by string test. Carbapenem-resistant hvKP (CR-hvKP), multidrug-resistant hvKP (MDR-hvKP), extensively drug-resistant hvKP (XDR-hvKP), and pandrug-resistant hvKP (PDR-hvKP) were determined by disc diffusion method, Carba-NP test and PCR method. XDR-hvKP isolates were typed by multilocus sequence typing (MLST). Among all K. pneumoniae isolates 14 (26.9%) were identified as hvKP and 78.6% (11/14) of them were hmKP however, none of the classic K. pneumoniae (cKP) isolates were hmKP. The predominant capsular serotype of hvKP was K2 (42.85%) followed by K1 (35.71%). The prevalence of MDR-hvKP, XDR-hvKP and PDR-hvKP isolates were 6 (42.9%), 5 (35.7%) and 1 (7.1%), respectively. ESBL production was found in 85.7% of hvKP isolates and most of them carried bla TEM gene (78.6%) and 6 isolates (42.9%) were CR-hvKP. Among hvKP isolates, 1 (7.1%), 2 (14.3%), 3 (21.4%), 8 (28.6%), and 11 (78.6%) carried bla NDM-6, bla OXA-48, bla CTX-M, bla SHV, and bla TEM genes, respectively. According to MLST analysis, 2, 1, 1, and 1 XDR-hvKP isolates belonged to ST15, ST377, ST442, and ST147, respectively. The occurrence of such isolates is deeply concerning due to the combination of hypervirulence and extensively drug-resistance or pandrug-resistance.

scholarly journals Antimicrobial Activities of Aztreonam-Avibactam and Comparator Agents against Contemporary (2016) Clinical Enterobacteriaceae Isolates

2017 ◽  
Vol 62 (1) ◽  
Author(s):  
Helio S. Sader ◽  
Rodrigo E. Mendes ◽  
Michael A. Pfaller ◽  
Dee Shortridge ◽  
Robert K. Flamm ◽  
...  
Keyword(s):  
Klebsiella Pneumoniae ◽  
Multidrug Resistant ◽  
Antimicrobial Activities ◽  
Drug Resistant ◽  
Content Type ◽  
Medical Centers ◽  
Extensively Drug Resistant ◽  
Mic Value

ABSTRACT A total of 10,451 contemporary (2016) Enterobacteriaceae isolates from 84 U.S. medical centers and 116 metallo-β-lactamase- and/or OXA-48-like-producing Enterobacteriaceae isolates from other countries were tested against aztreonam-avibactam and comparators. All U.S. isolates were inhibited at aztreonam-avibactam MICs of ≤8 μg/ml (MIC50, ≤0.03 μg/ml; MIC90, 0.12 μg/ml), including Klebsiella pneumoniae carbapenemase-producing isolates (n = 102; MIC50, 0.25 μg/ml; MIC90, 0.5 μg/ml), multidrug-resistant isolates (n = 876; MIC50, 0.06 μg/ml; MIC90, 0.25 μg/ml), and extensively drug-resistant isolates (n = 111; MIC50, 0.12 μg/ml; MIC90, 0.5 μg/ml). The highest aztreonam-avibactam MIC value among ex-U.S. isolates was 4 μg/ml.

scholarly journals Resistance Determinants and Mobile Genetic Elements of an NDM-1-Encoding Klebsiella pneumoniae Strain

PLoS ONE ◽  
2014 ◽  
Vol 9 (6) ◽  
pp. e99209 ◽  
Author(s):  
Corey M. Hudson ◽  
Zachary W. Bent ◽  
Robert J. Meagher ◽  
Kelly P. Williams
Keyword(s):  
Klebsiella Pneumoniae ◽  
Mobile Genetic Elements ◽  
Genetic Elements ◽  
Resistance Determinants

Successful Treatment of Antibiotic-resistant, Poly-microbial Bone Infection With Bacteriophages and Antibiotics Combination

2019 ◽  
Vol 69 (11) ◽  
pp. 2015-2018 ◽  
Author(s):  
Ran Nir-Paz ◽  
Daniel Gelman ◽  
Ayman Khouri ◽  
Brittany M Sisson ◽  
Joseph Fackler ◽  
...  
Keyword(s):  
Klebsiella Pneumoniae ◽  
Acinetobacter Baumannii ◽  
Successful Treatment ◽  
Positive Culture ◽  
Multidrug Resistant ◽  
Bone Infection ◽  
Drug Resistant ◽  
Antibiotic Resistant ◽  
Extensively Drug Resistant ◽  
Tissue Healing

Abstract A patient with a trauma-related left tibial infection associated with extensively drug-resistant Acinetobacter baumannii and multidrug-resistant Klebsiella pneumoniae was treated with bacteriophages and antibiotics. There was rapid tissue healing and positive culture eradication. As a result, the patient’s leg did not have to be amputated and he is undergoing rehabilitation.

scholarly journals Case Report: Successful Rescue Therapy of Extensively Drug-Resistant Acinetobacter baumannii Osteomyelitis With Cefiderocol

2020 ◽  
Vol 7 (5) ◽  
Author(s):  
Michael Dagher ◽  
Felicia Ruffin ◽  
Steven Marshall ◽  
Magdalena Taracila ◽  
Robert A Bonomo ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Case Report ◽  
Acinetobacter Baumannii ◽  
Rescue Therapy ◽  
Whole Genome ◽  
Drug Resistant ◽  
Gram Negative ◽  
Resistance Determinants ◽  
Extensively Drug Resistant ◽  
Cephalosporin Antibiotic

Abstract Cefiderocol is a novel catechol siderophore cephalosporin antibiotic developed to treat resistant gram-negative infections. We describe its successful use as rescue therapy, combined with surgical debridement, to treat a patient with osteomyelitis due to extensively drug-resistant Acinetobacter baumannii. Bacterial whole-genome sequencing identified the strain and antibiotic resistance determinants.

scholarly journals Antibiotic Resistance and Typhoid

2019 ◽  
Vol 68 (Supplement_2) ◽  
pp. S165-S170 ◽  
Author(s):  
Zoe A Dyson ◽  
Elizabeth J Klemm ◽  
Sophie Palmer ◽  
Gordon Dougan
Keyword(s):  
Antibiotic Resistance ◽  
Infectious Diseases ◽  
Human Population ◽  
Multiple Drug ◽  
Drug Resistant ◽  
Multiple Antibiotic Resistance ◽  
Salmonella Enterica Serovar Typhi ◽  
Resistance Determinants ◽  
Major Threat ◽  
Extensively Drug Resistant

AbstractMultiple drug (antibiotic) resistance (MDR) has become a major threat to the treatment of typhoid and other infectious diseases. Since the 1970s, this threat has increased in Salmonella enterica serovar Typhi, driven in part by the emergence of successful genetic clades, such as haplotype H58, associated with the MDR phenotype. H58 S. Typhi can express multiple antibiotic resistance determinants while retaining the ability to efficiently transmit and persist within the human population. The recent identification of extensively drug resistant S. Typhi only highlights the dangers of ignoring this threat. Here we discuss the evolution of the S. Typhi MDR phenotype and consider options for management.

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