scholarly journals First detection of a plasmid-encoded New-Delhi metallo-beta-lactamase-1 (NDM-1) producing Acinetobacter baumannii using whole genome sequencing, isolated in a clinical setting in Benin

2020 ◽  
Author(s):  
Carine Laurence Yehouenou ◽  
Bert Bogaerts ◽  
Kevin Vanneste ◽  
Nancy H.C. Roosens ◽  
Sigrid C.J. De Keersmaecker ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Whole Genome Sequencing ◽  
Acinetobacter Baumannii ◽  
Genome Sequencing ◽  
World Health ◽  
New Delhi ◽  
Whole Genome ◽  
Beta Lactamase ◽  
Drug Resistant ◽  
Extensively Drug Resistant

Abstract Background: Carbapenem-resistant Acinetobacter baumannii is considered a top priority pathogen by the World Health Organization for combatting increasing antibiotic resistance and development of new drugs. Since it was originally reported in Klebsiella pneumoniae in 2009, the quick spread of the blaNDM-1 gene encoding a New-Delhi metallo-beta-lactamase-1 (NDM-1) is increasingly recognized as a serious threat. This gene is usually carried by large plasmids and has already been documented in diverse bacterial species, including A. baumannii. Here, we report the first detection of a NDM-1-producing A. baumannii strain isolated in Benin.Case presentation: A 31-year-old woman was admitted to a surgical unit with a diagnosis of post-cesarean hematoma. An extensively-drug resistant A. baumannii strain solely susceptible to amikacin, colistin and ciprofloxacin, and resistant to several other antibiotics including ceftazidime, imipenem, meropenem, gentamicin, tobramycin, ceftazidime/avibactam, and sulfamethoxazole-trimethoprim, was isolated from the wound. Production of NDM-1 was demonstrated by immunochromatographic testing. Whole genome sequencing of the isolate confirmed the presence of blaNDM-1, but also antibiotic resistance genes against multiple beta-lactamases and other classes of antibiotics, in addition to several virulence genes. Moreover, the blaNDM-1 gene was found to be present in a Tn125 transposon integrated on a plasmid.Conclusions: The discovery of this extensively-drug resistant A. baumannii strain carrying blaNDM-1 in Benin is worrying, especially because of its high potential risk of horizontal gene transfer due to being integrated in a transposon located on a plasmid. Strict control and prevention measures should be taken, once NDM-1 positive A. baumannii has been identified to prevent transfer of this resistance gene to other Enterobacterales. Capacity building is required by governmental agencies to provision suitable antibiotic treatment options and strategies, in combination with strengthening laboratory services for detection and surveillance of this pathogen.

scholarly journals First detection of a plasmid-encoded New-Delhi metallo-beta-lactamase-1 (NDM-1) producing Acinetobacter baumannii using whole genome sequencing, isolated in a clinical setting in Benin

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Carine Yehouenou ◽  
Bert Bogaerts ◽  
Kevin Vanneste ◽  
Nancy H. C. Roosens ◽  
Sigrid C. J. De Keersmaecker ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Whole Genome Sequencing ◽  
Acinetobacter Baumannii ◽  
Genome Sequencing ◽  
World Health ◽  
New Delhi ◽  
Whole Genome ◽  
Beta Lactamase ◽  
Drug Resistant ◽  
Extensively Drug Resistant

Abstract Background Carbapenem-resistant Acinetobacter baumannii is considered a top priority pathogen by the World Health Organization for combatting increasing antibiotic resistance and development of new drugs. Since it was originally reported in Klebsiella pneumoniae in 2009, the quick spread of the blaNDM-1 gene encoding a New-Delhi metallo-beta-lactamase-1 (NDM-1) is increasingly recognized as a serious threat. This gene is usually carried by large plasmids and has already been documented in diverse bacterial species, including A. baumannii. Here, we report the first detection of a NDM-1-producing A. baumannii strain isolated in Benin. Case presentation A 31-year-old woman was admitted to a surgical unit with a diagnosis of post-cesarean hematoma. An extensively-drug resistant A. baumannii strain solely susceptible to amikacin, colistin and ciprofloxacin, and resistant to several other antibiotics including ceftazidime, imipenem, meropenem, gentamicin, tobramycin, ceftazidime/avibactam, and sulfamethoxazole-trimethoprim, was isolated from the wound. Production of NDM-1 was demonstrated by immunochromatographic testing. Whole genome sequencing of the isolate confirmed the presence of blaNDM-1, but also antibiotic resistance genes against multiple beta-lactamases and other classes of antibiotics, in addition to several virulence genes. Moreover, the blaNDM-1 gene was found to be present in a Tn125 transposon integrated on a plasmid. Conclusions The discovery of this extensively-drug resistant A. baumannii strain carrying blaNDM-1 in Benin is worrying, especially because of its high potential risk of horizontal gene transfer due to being integrated into a transposon located on a plasmid. Strict control and prevention measures should be taken, once NDM-1 positive A. baumannii has been identified to prevent transfer of this resistance gene to other Enterobacterales. Capacity building is required by governmental agencies to provide suitable antibiotic treatment options and strategies, in combination with strengthening laboratory services for detection and surveillance of this pathogen.

scholarly journals First detection of a plasmid-encoded New-Delhi metallo-beta-lactamase-1 (NDM-1) producing Acinetobacter baumannii using whole genome sequencing, isolated in a clinical setting in Benin

2020 ◽  
Author(s):  
Carine Laurence YEHOUENOU ◽  
Bert BOGAERTS ◽  
Kevin VANNESTE ◽  
Nancy ROOSENS ◽  
Sigrid DE KEERSMAECKER ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Whole Genome Sequencing ◽  
Acinetobacter Baumannii ◽  
Genome Sequencing ◽  
World Health ◽  
New Delhi ◽  
Whole Genome ◽  
Beta Lactamase ◽  
Drug Resistant ◽  
Extensively Drug Resistant

Abstract Background Carbapenem-resistant Acinetobacter baumannii is considered a top priority pathogen by the World Health Organization for combatting increasing antibiotic resistance and development of new drugs. Since it was originally reported in Klebsiella pneumoniae in 2009, the quick spread of the blaNDM−1 gene encoding a New-Delhi metallo-beta-lactamase-1 (NDM-1) is increasingly recognized as a serious threat. This gene is usually carried by large plasmids and has already been documented in diverse bacterial species, including A. baumannii. Here, we report the first detection of a NDM-1-producing A. baumannii strain isolated in Benin. Case presentation: A 31-year-old woman was admitted to a surgical unit with a diagnosis of post-cesarean hematoma. An extensively-drug resistant A. baumannii strain solely susceptible to amikacin, colistin and ciprofloxacin, and resistant to several other antibiotics including ceftazidime, imipenem, meropenem, gentamicin, tobramycin, ceftazidime/avibactam, and sulfamethoxazole-trimethoprim, was isolated from the wound. Production of NDM-1 was demonstrated by immunochromatographic testing. Whole genome sequencing of the isolate confirmed the presence of blaNDM−1, but also antibiotic resistance genes against multiple beta-lactamases and other classes of antibiotics, in addition to several virulence genes. Moreover, the blaNDM−1 gene was found to be present in a Tn125 transposon integrated on a plasmid. Conclusions The discovery of this extensively-drug resistant A. baumannii strain carrying blaNDM−1 in Benin is worrying, especially because of its high potential risk of horizontal gene transfer due to being integrated in a transposon located on a plasmid. Strict control and prevention measures should be taken, once NDM-1 positive A. baumannii has been identified to prevent transfer of this resistance gene to other Enterobacterales. Capacity building is required by governmental agencies to provision suitable antibiotic treatment options and strategies, in combination with strengthening laboratory services for detection and surveillance of this pathogen.

Extensively drug-resistant Acinetobacter baumannii isolated from intensive care units in northern Italy: a genomic approach to characterize new sequence types

2019 ◽  
Vol 14 (15) ◽  
pp. 1281-1292 ◽  
Author(s):  
Giovanni Lorenzin ◽  
Erika Scaltriti ◽  
Franco Gargiulo ◽  
Francesca Caccuri ◽  
Giorgio Piccinelli ◽  
...  
Keyword(s):  
Intensive Care ◽  
Whole Genome Sequencing ◽  
Acinetobacter Baumannii ◽  
Intensive Care Units ◽  
Genome Sequencing ◽  
Multilocus Sequence Typing ◽  
Whole Genome ◽  
Drug Resistant ◽  
Extensively Drug Resistant ◽  
Sequence Types

Aim: This study aims to characterize clinical strains of Acinetobacter baumannii with an extensively drug-resistant phenotype. Methods: VITEK® 2, Etest® method and broth microdilution method for colistin were used. PCR analysis and multilocus sequence typing Pasteur scheme were performed to identify bla-OXA genes and genetic relatedness, respectively. Whole-genome sequencing analysis was used to characterize three isolates. Results: All the isolates were susceptible only to polymyxins. blaOXA-23-like gene was the only acquired carbapenemase gene in 88.2% of the isolates. Multilocus sequence typing identified various sequence types: ST2, ST19, ST195, ST577 and ST632. Two new sequence types, namely, ST1279 and ST1280, were detected by whole-genome sequencing. Conclusion: This study showed that carbapenem-resistant A. baumannii isolates causing infections in intensive care units almost exclusively produce OXA-23, underlining their frequent spread in Italy.

Whole genome analysis of extensively drug-resistant Acinetobacter bau-mannii clinical isolates in Thailand

2020 ◽  
Vol 20 ◽  
Author(s):  
Peechanika Chopjitt ◽  
Anusak Kerdsin ◽  
Dan Takeuchi ◽  
Rujirat Hatrongjit ◽  
Parichart Boueroy ◽  
...  
Keyword(s):  
Whole Genome Sequencing ◽  
Acinetobacter Baumannii ◽  
Genome Sequencing ◽  
Efflux Pump ◽  
Multidrug Resistant ◽  
Whole Genome ◽  
Drug Resistant ◽  
Resistant Genes ◽  
Extensively Drug Resistant ◽  
Antibiotic Efflux

Background:: Acinetobacter baumannii is recognized as a majority opportunistic nosocomial pathogen and caus-ing hospital-acquired infection worldwide. The increasing prevalence of extensively drug-resistant Acinetobacter baumannii (XDRAB) has become a rising concern in healthcare facilities and has impeded public health due to limitation of therapeutic options and are associated with high morbidity and mortality as well as longer hospitalization. Whole-genome sequencing of highly multidrug resistant A. baumannii will increase understanding of resistant mechanisms, the emergence of novel re-sistance, genetic relationships among the isolates, source tracking, and treatment decisions in selected patients. Objective:: This study revealed the genomic analysis to explore blaOXA-23 harboring XDRAB isolates in Thailand. Methods:: Whole-genome sequencing of the two XDRAB isolates was carried out on a HiSeq2000 Illumina platform and susceptibility on antimicrobials was conducted. Results:: Both isolates revealed sequence types of international, clone II-carrying, multiple antimicrobial-resistant genes—ST195 and ST451. They were resistant to antimicrobial agents in all drug classes tested for Acinetobacter spp. They carried 18 antimicrobial-resistant genes comprising of 4 -lactamase genes (blaOXA-23, blaOXA-66, blaTEM-1D, blaADC-25), 4 aminogly-coside-resistant genes (armA, aph(3')-Ia, aph(3'')-Ib, aph(6)-Id), 3 macrolide-resistant genes (amvA, mphE, msrE), 1 sulfon-amide-resistant gene (sul-2), 2 tetracycline-resistant genes (tetB, tetR), 1 resistant-nodulation-cell division (RND) antibiotic efflux pump gene cluster, 2 major facilitator superfamily (MFS) antibiotic efflux pump genes (abaF, abaQ), and 1 small multidrug-resistant (SMR) antibiotic efflux pump gene (abeS). Mutation of gyrA (S81L) occurred in both isolates. Conclusions:: Whole-genome sequencing revealed both blaOXA-23 harboring XDRAB isolates were clustered under interna-tional clone II with difference STs and carrying multiple antimicrobial-resistant genes conferred their resistance to antimi-crobial agents. Inactivation of antimicrobials and target modification by enzymes, and pumping antibiotics by efflux pump are mainly resistance mechanism of the XDRAB in this study.

scholarly journals Genome Sequencing of Polydrug-, Multidrug-, and Extensively Drug-Resistant Mycobacterium tuberculosis Strains from South India

2019 ◽  
Vol 8 (12) ◽  
Author(s):  
Sivakumar Shanmugam ◽  
Narender Kumar ◽  
Dina Nair ◽  
Mohan Natrajan ◽  
Srikanth Prasad Tripathy ◽  
...  
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Whole Genome Sequencing ◽  
Genome Sequencing ◽  
South India ◽  
Sequence Data ◽  
Whole Genome ◽  
Drug Resistant ◽  
Resistance Mutations ◽  
Content Type ◽  
Extensively Drug Resistant

The genomes of 16 clinical Mycobacterium tuberculosis isolates were subjected to whole-genome sequencing to identify mutations related to resistance to one or more anti-Mycobacterium drugs. The sequence data will help in understanding the genomic characteristics of M. tuberculosis isolates and their resistance mutations prevalent in South India.

scholarly journals Whole Genome Sequencing Based Characterization of Extensively Drug-Resistant Mycobacterium tuberculosis Isolates from Pakistan

PLoS ONE ◽  
2015 ◽  
Vol 10 (2) ◽  
pp. e0117771 ◽  
Author(s):  
Asho Ali ◽  
Zahra Hasan ◽  
Ruth McNerney ◽  
Kim Mallard ◽  
Grant Hill-Cawthorne ◽  
...  
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Whole Genome Sequencing ◽  
Genome Sequencing ◽  
Whole Genome ◽  
Drug Resistant ◽  
Extensively Drug Resistant

scholarly journals Whole-Genome Sequencing Analysis of Serially Isolated Multi-Drug and Extensively Drug Resistant Mycobacterium tuberculosis from Thai Patients

PLoS ONE ◽  
2016 ◽  
Vol 11 (8) ◽  
pp. e0160992 ◽  
Author(s):  
Kiatichai Faksri ◽  
Jun Hao Tan ◽  
Areeya Disratthakit ◽  
Eryu Xia ◽  
Therdsak Prammananan ◽  
...  
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Whole Genome Sequencing ◽  
Genome Sequencing ◽  
Whole Genome ◽  
Sequencing Analysis ◽  
Drug Resistant ◽  
Extensively Drug Resistant

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 Transmitted Extended-Spectrum Extensively Drug-Resistant Tuberculosis in Beijing, China, with Discordant Whole-Genome Sequencing Analysis Results

2015 ◽  
Vol 53 (8) ◽  
pp. 2781-2784 ◽  
Author(s):  
Hao Li ◽  
Masood ur Rehman Kayani ◽  
Yunting Gu ◽  
Xiaobo Wang ◽  
Ting Zhu ◽  
...  
Keyword(s):  
Whole Genome Sequencing ◽  
Genome Sequencing ◽  
Whole Genome ◽  
Sequencing Analysis ◽  
Drug Resistant ◽  
Resistant Disease ◽  
Resistant Tuberculosis ◽  
Extensively Drug Resistant ◽  
Extended Spectrum ◽  
Beijing China

Drug resistance to tuberculosis remains a major public health threat. Here, we report two cases of extended-spectrum extensively drug-resistant (XXDR) tuberculosis showing resistance to most first- and second-line agents. The results of a correlation of whole-genome sequencing (WGS) and phenotypic testing were discordant, suggesting that overreliance on WGS may miss clinically relevant resistance in extensively drug-resistant disease.

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