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https://www.readbyqxmd.com/read/29775786/is-mic-increase-of-meropenem-against-klebsiella-pneumoniae-carbapenemase-kpc-producing-klebsiella-pneumoniae-correlated-with-the-increase-of-resistance-rates-against-some-other-antibiotics-with-gram-negative-activity
#1
Piergiorgio Cojutti, Assunta Sartor, Matteo Bassetti, Claudio Scarparo, Federico Pea
OBJECTIVE: To assess MIC distribution for meropenem and the other antibiotics with Gram-negative activity against KPC-Kp clinical isolates collected at our hospital in 2013-2016. METHODS: Susceptibility of KPC-Kp strains was tested by broth microdilution method, using customized 96-well plates, and was interpreted according to the EUCAST recommendations. RESULTS: Among 169 consecutive KPC-Kp clinical isolates 26.6% were susceptible to meropenem...
May 15, 2018: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29775685/phenotypic-and-genetic-resistance-traits-in-pseudomonas-aeruginosa-strains-infecting-cystic-fibrosis-patients-a-french-cohort-study
#2
Nathalie Courtois, Yvan Caspar, Max Maurin
Pseudomonas aeruginosa is responsible for chronic respiratory tract colonisation and acute exacerbations in cystic fibrosis (CF) patients. This Gram-negative bacterium often develops multidrug resistance, which represents a therapeutic challenge. Our objective was to characterize the phenotypic and genetic β-lactam resistance traits of P. aeruginosa strains isolated from CF patients followed at Grenoble Alpes university hospital. The susceptibility to β-lactam compounds of 123 P. aeruginosa strains collected from the lower respiratory tract of 45 CF patients, between 2010 and 2014, was evaluated...
May 15, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29774849/zooanthroponotic-transmission-of-drug-resistant-pseudomonas-aeruginosa-brazil
#3
Miriam R Fernandes, Fábio P Sellera, Quézia Moura, Marcelo P N Carvalho, Paula N Rosato, Louise Cerdeira, Nilton Lincopan
We recovered VIM-2 carbapenemase-producing Pseudomonas aeruginosa isolates from an infected dog, its owner, and the domestic environment. Genomic investigation revealed household transmission of the high-risk hospital clone sequence type 233 in the human-animal-environment interface. Results suggest zooanthroponotic transmission of VIM-2-producing P. aeruginosa in the household following the patient's hospital discharge.
June 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29769274/a-comparative-evaluation-of-four-phenotypic-methods-for-detection-of-class-a-and-b-carbapenemase-producing-enterobacteriaceae-in-china
#4
Menglan Zhou, Danchen Wang, Timothy Kudinha, Qiwen Yang, Shuying Yu, Ying-Chun Xu
Objectives: To evaluate the performance of four phenotypic methods in the detection of carbapenemase-producing Enterobacteriaceae (CPE) in China. Methods: We evaluated the performance of four carbapenemase detection methods, the modified Hodge test (MHT), Carba NP test, meropenem hydrolysis assay (MHA) with 1 and 2-hour incubation, and modified carbapenem inactivation method (mCIM) with meropenem, imipenem, and ertapenem, on 342 carbapenem-resistant Enterobacteriaceae (CRE) in China. Polymerase chain reaction was used as the gold standard...
May 16, 2018: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29760135/-in-vitro-activity-of-imipenem-relebactam-against-clinical-isolates-of-gram-negative-bacilli-isolated-in-hospital-laboratories-in-the-united-states-smart-2016
#5
James A Karlowsky, Sibylle H Lob, Krystyna M Kazmierczak, Katherine Young, Mary R Motyl, Daniel F Sahm
Relebactam is a non-β-lactam, bicyclic diazabicyclooctane β-lactamase inhibitor of class A and class C β-lactamases, including Klebsiella pneumoniae carbapenemases (KPCs). It is in phase 3 clinical development in combination with imipenem/cilastatin. The in vitro activities of imipenem-relebactam, imipenem, and comparators were determined using the Clinical and Laboratory Standards Institute (CLSI) reference broth microdilution method for isolates of Enterobacteriaceae ( n =3,419) and Pseudomonas aeruginosa ( n =896) collected in 2016 by 21 U...
May 14, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29760124/-in-vitro-activity-of-ceftazidime-avibactam-against-clinical-isolates-of-enterobacteriaceae-and-pseudomonas-aeruginosa-collected-in-asia-pacific-countries-results-from-the-inform-global-surveillance-program-2012-2015
#6
James A Karlowsky, Krystyna M Kazmierczak, Samuel K Bouchillon, Boudewijn L M de Jonge, Gregory G Stone, Daniel F Sahm
The in vitro activities of ceftazidime-avibactam and comparators were determined for 9,149 isolates of Enterobacteriaceae and 2,038 isolates of Pseudomonas aeruginosa collected by 42 medical centers in nine countries in the Asia-Pacific region from 2012 to 2015 as part of the International Network For Optimal Resistance Monitoring (INFORM) global surveillance program. Antimicrobial susceptibility testing was conducted by CLSI broth microdilution and isolate subset analysis performed based on resistant phenotypes and β-lactamase content...
May 14, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29753130/clonal-dissemination-of-carbapenemase-producing-klebsiella-pneumoniae-two-distinct-sub-lineages-of-sequence-type-11-carrying-bla-kpc-2-and-bla-oxa-48
#7
Min-Chi Lu, Hui-Ling Tang, Chien-Shun Chiou, Yao-Chen Wang, Ming-Ko Chiang, Yi-Chyi Lai
OBJECTIVES: The global spread of carbapenem-resistant Klebsiella pneumoniae (CR-Kp) has become a massive threat to human health. We here investigated the clonal relatedness of CR-Kp strains in central Taiwan. METHODS: CR-Kp were prospectively collected from inpatients referred to Chung Shan Medical University Hospital (CSMUH) during Sep. 2011 to Dec. 2015. The presence of carbapenemase genes, including blaKPC-2 , blaVIM-1 , blaNDM-1 , and blaOXA-48 was analyzed with PCR and sequence determination...
May 9, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29751417/occurrence-and-characteristics-of-extended-spectrum-%C3%AE-lactamase-and-carbapenemase-producing-bacteria-from-hospital-effluents-in-singapore
#8
Laurence Haller, Hongjie Chen, Charmaine Ng, Thai Hoang Le, Tse Hsien Koh, Timothy Barkham, Mark Sobsey, Karina Yew-Hoong Gin
One of the most important resistance mechanisms in Gram-negative bacteria today is the production of enzymes causing resistance to cephalosporin and carbapenem antibiotics. The spread of extended-spectrum β-lactamases (ESBL)- and carbapenemase- producing Gram-negative bacteria is an emerging global public health problem. The aim of the present study was to (i) assess the prevalence of carbapenem-resistant bacteria (CRB) and ESBL-producing strains in sewage effluents from two major hospitals in Singapore, (ii) characterize the isolated strains and (iii) identify some of the ESBL and carbapenemase genes responsible for the resistance...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29744043/genome-based-analysis-of-carbapenemase-producing-klebsiella-pneumoniae-isolates-from-german-hospital-patients-2008-2014
#9
Laura Becker, Martin Kaase, Yvonne Pfeifer, Stephan Fuchs, Annicka Reuss, Anja von Laer, Muna Abu Sin, Miriam Korte-Berwanger, Sören Gatermann, Guido Werner
Background: By using whole genome sequence data we aimed at describing a population snapshot of carbapenemase-producing K. pneumoniae isolated from hospitalized patients in Germany between 2008 and 2014. Methods: We selected a representative subset of 107 carbapenemase-producing K. pneumoniae clinical isolates possessing the four most prevalent carbapenemase types in Germany (KPC-2, KPC-3, OXA-48, NDM-1). Isolates were processed via illumina NGS. Data were analysed using different SNP-based mapping and de-novo assembly approaches...
2018: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/29739906/ceftazidime-is-the-key-diversification-and-selection-driver-of-vim-type-carbapenemases
#10
Laura Martínez-García, José M González-Alba, Fernando Baquero, Rafael Cantón, Juan Carlos Galán
In recent decades, carbapenems have been considered the last line of antibiotic therapy for Gram-negative bacterial infections. Unfortunately, strains carrying a high diversity of β-lactamases able to hydrolyze carbapenems have emerged in the clinical setting. Among them, VIM β-lactamases have diversified in a bloom of variants. The evolutionary reconstructions performed in this work revealed that, at the end of the 1980s, two independent events involving diversification from VIM-2 and VIM-4 produced at least 25 VIM variants...
May 8, 2018: MBio
https://www.readbyqxmd.com/read/29739004/detection-of-antibiotic-resistance-determinants-and-their-transmissibility-among-clinically-isolated-carbapenem-resistant-escherichia-coli-from-south-india
#11
Niranjana Mahalingam, Bhavani Manivannan, Balaram Khamari, Shivakumara Siddaramappa, Sudeshna Adak, Eswarappa Pradeep Bulagonda
OBJECTIVES: The aim of this study was to analyze the prevalence of CTX-M, TEM, SHV, VIM, NDM and OXA genes in carbapenemase-producing E. coli and their transmissibility at a tertiary care hospital in south India. MATERIALS AND METHODS: Twenty-one carbapenem-resistant E. coli (CRE) were collected from Sri Sathya Sai Institute of Higher Medical Sciences, Prasanthigram, India. Resistance to antibiotics was analyzed by Vitek-2, and identity of the isolates was confirmed by 16S rDNA sequencing...
May 8, 2018: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/29730830/the-epidemiology-evolution-and-treatment-of-kpc-producing-organisms
#12
REVIEW
Ann Marie Porreca, Kaede V Sullivan, Jason C Gallagher
PURPOSE OF REVIEW: The purpose of this review is to investigate the evolution and epidemiology of Klebsiella pneumoniae carbapenemase (KPC)-producing organisms and the current and future treatment options for infections caused by KPC-producing isolates. RECENT FINDINGS: The emergence of resistance in Enterobacteriaceae producing carbapenemases globally has increased the challenges in treating infections caused by these organisms. One of the prominent mechanisms of resistance is the production of KPC enzymes...
May 5, 2018: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/29728111/emergence-of-multidrug-resistant-providencia-rettgeri-isolates-co-producing-ndm-1-carbapenemase-and-per-1-extended-spectrum-%C3%AE-lactamase-causing-a-first-outbreak-in-korea
#13
Saeam Shin, Seok Hoon Jeong, Hyukmin Lee, Jun Sung Hong, Min-Jeong Park, Wonkeun Song
BACKGROUND: Nosocomial outbreak due to carbapenem-resistant Enterobacteriaceae has become serious challenge to patient treatment and infection control. We describe an outbreak due to a multidrug-resistant Providencia rettgeri from January 2016 to January 2017 at a University Hospital in Seoul, Korea. METHODS: A total of eight non-duplicate P. rettgeri isolates were discovered from urine samples from eight patients having a urinary catheter and admitted in a surgical intensive care unit...
May 5, 2018: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/29727717/coexistence-of-ndm-1-producing-escherichia-coli-and-citrobacter-freundii-in-the-same-patient
#14
Bo Zhu, Chaoqun Ying, Hao Xu, Jingjing Ying
OBJECTIVES: Although blaNDM-1 has now been widely detected in various Enterobacteriaceae clinical isolates, multiple blaNDM-1 colonizations within the same patient remain rare. The aim of the study was to describe a patient with respiratory tract colonization of NDM-1-producing Escherichia coli and Citrobacter freundii during a hospitalization in China. METHODS: Two carbapenem-resistant isolates were analysed. Susceptibility testing, metallo-β-lactamase production, conjugation, plasmid analysis, and molecular typing were performed...
May 1, 2018: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29724185/clonal-diversity-and-genetic-profiling-of-antibiotic-resistance-among-multidrug-carbapenem-resistant-klebsiella-pneumoniae-isolates-from-a-tertiary-care-hospital-in-saudi-arabia
#15
Taher Uz Zaman, Maha Alrodayyan, Maha Albladi, Mohammed Aldrees, Mohammed Ismail Siddique, Sameera Aljohani, Hanan H Balkhy
BACKGROUND: The nexus between resistance determinants, plasmid type, and clonality appears to play a crucial role in the dissemination and survival of carbapenem-resistant Klebsiella pneumoniae (CRKP). The incidence of infections involving CRKP in Saudi Arabia is increasing and there is a need for detailed molecular profiling of this pathogen for CRKP surveillance and control. METHODS: The resistance determinants of 71 non-redundant CRKP isolates were investigated by polymerase chain reaction (PCR) and sequencing...
May 3, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29718572/a-carbapenem-based-off-on-fluorescent-probe-for-specific-detection-of-metallo-%C3%A3-lactamase-activities
#16
Wuyu Mao, Yaqun Wang, Xiana Qian, Lingying Xia, Hexin Xie
Metallo-ß-lactamase has been one of the major clinical threats because this ß-lactam-hydrolyzing enzyme confers significant resistance to most ß-lactam antibiotics, including carbapenems, among bacterial pathogens. Reported herein is a novel fluorogenic sensor for the specific detection of metallo-ß-lactamase activities. This carbapenem-based reagent exhibits excellent selectivity to metallo-ß-lactamase over other serine-ß-lactamases, including serine-carbapenemases. The usefulness of this probe was further demonstrated in the rapid identification of metallo-ß-lactamase-expressing pathogenic bacteria...
May 2, 2018: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/29716812/first-report-of-the-isolation-of-bla-imi-1-producing-colistin-heteroresistant-enterobacter-cloacae-in-japan-september-2016
#17
Norihito Tarumoto, Masahiro Kodana, Noriyuki Watanabe, Jun Sakai, Kazuo Imai, Toshiyuki Yamaguchi, Yoshitada Taji, Yasuhiro Ebihara, Takashi Murakami, Takuya Maeda, Kotaro Mitsutake, Shigefumi Maesaki
The isolation of a carbapenem-resistant Enterobacter cloacae strain harboring the IMI-1 variant of blaIMI-1 carbapenemase points to the worldwide emergence of multidrug resistant bacteria as a potential source of health care infections. In this report, we describe the first isolation of E. cloacae with blaIMI-1 carbapenemase isolated from a Japanese patient in September 2016. The isolate was resistant to carbapenems, levofloxacin, and aminoglycosides, and heteroresistant to colistin but sensitive to fourth-generation cephalosporins...
April 28, 2018: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29713466/dissemination-of-bla-ndm-5-gene-via-an-incx3-type-plasmid-among-non-clonal-escherichia-coli-in-china
#18
Xi Li, Ying Fu, Mengyuan Shen, Danyan Huang, Xiaoxing Du, Qingfeng Hu, Yonglie Zhou, Dairong Wang, Yunsong Yu
Background: The emergence and spread of New Delhi metallo-β-lactamase-producing Enterobacteriaceae has been a serious challenge to manage in the clinic due to its rapid dissemination of multi-drug resistance worldwide. As one main type of carbapenemases, New Delhi metallo-β-lactamase (NDM)is able to confer resistance to almost all β-lactams, including carbapenems, in Enterobacteriaceae . Recently, New Delhi metallo-β-lactamase-5 attracted extensive attention because of increased resistance to carbapenems and widespread dissemination...
2018: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/29709574/detection-of-bla-oxa-48-and-clonal-relationship-in-carbapenem-resistant-k-pneumoniae-isolates-at-a-tertiary-care-center-in-western-turkey
#19
Gulfem Ece, Emine Tunc, Baris Otlu, Deniz Aslan, Cem Ece
BACKGROUND: Klebsiella pneumoniae is an important nosocomial pathogen that can lead to high morbidity and mortality. ESBL and carbapenamase producing strains may cause epidemic situations. The aim of our study was to investigate the molecular epidemiology and clonal relationship between carbapenem resistant K. pneumoniae strains isolated from our hospital during a three month period. METHODS: Fourteen carbapenem resistant K. pneumoniae strains isolated during April 1st-June 30th 2013 were included...
April 27, 2018: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/29709404/microbiology-of-french-military-casualties-repatriated-from-overseas-for-an-open-traumatic-injury
#20
S Larréché, A Bousquet, C Soler, C Mac Nab, D de Briel, D Delaune, C Bigaillon, P Pasquier, C Dubost, T Demoures, B Malgras, S Ausset, S de Rudnicki, T Leclerc, B de Loynes, S Bonnet, N Mocellin, C Ficko, R Haus, O Hersan, S Rigal, A Mérens
BACKGROUND: This study aimed to describe the microbiological epidemiology of repatriated French soldiers with an open traumatic injury, and to measure the proportion of multidrug-resistant bacteria (MDRB). METHODS: Retrospective study including all French soldiers repatriated in 2011 and 2012 in Parisian military hospitals for open traumatic injury. Results of clinical samples and MDRB screening were collected. The antibiotic susceptibility was assessed using the agar disk diffusion method...
April 27, 2018: Médecine et Maladies Infectieuses
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