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https://www.readbyqxmd.com/read/27855076/molecular-characterization-of-oxa-48-like-producing-enterobacteriaceae-in-the-czech-republic-evidence-for-horizontal-transfer-of-poxa-48-like-plasmids
#1
Anna Skálová, Kateřina Chudějová, Veronika Rotová, Matej Medvecky, Vendula Študentová, Eva Chudáčková, Pavel Lavicka, Tamara Bergerova, Vladislav Jakubu, Helena Zemlickova, Costas C Papagiannitsis, Jaroslav Hrabák
The aim of this study was to characterize the first cases and outbreaks of OXA-48-like-producing Enterobacteriaceae recovered from hospital settings, in the Czech Republic. During 2013-2015, twenty-two Klebsiella pneumoniae, three Escherichia coli and one Enterobacter cloacae producing OXA-48-like carbapenemases were isolated from 20 patients. Four of the patients were colonized/infected by two or three different OXA-48-like producers. K. pneumoniae isolates were classified into nine STs, with ST101 being the predominant (n=8)...
November 14, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27790412/first-report-of-complete-sequence-of-a-blandm-13-harboring-plasmid-from-an-escherichia-coli-st5138-clinical-isolate
#2
Jingnan Lv, Xiuqin Qi, Dan Zhang, Zhou Zheng, Yuehui Chen, Yinjuan Guo, Shanshan Wang, Liang Chen, Barry N Kreiswirth, Yi-Wei Tang, Zengqiang Chen, Longhua Hu, Liangxing Wang, Fangyou Yu
Since the first report of blaNDM-1, 16 blaNDM variants have been identified among Gram-negative bacteria worldwide. Recently, a novel blaNDM variant, blaNDM-13, was identified in the chromosome of an ST101 Escherichia coli isolate from Nepal. Here we first reported plasmid-mediated blaNDM-13 in a carbapenem-resistant E. coli ST5138 clinical isolate associated with hospital-acquired urinary tract infection from China. blaNDM-13 and blaSHV-12 coexisted on the a ~54 Kb self-transferable plasmid. Compared with NDM-1, NDM-13, NDM-3, and NDM-4 had two amino acid substitutions (D95N and M154L), one amino acid substitution (D95N) and one amino acid substitutions (M154L), respectively...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27728770/investigation-of-extensively-drug-resistant-blaoxa-23-producing-acinetobacter-baumannii-spread-in-a-greek-hospital
#3
Angeliki Mavroidi, Maria Katsiari, Eleftheria Palla, Sofia Likousi, Zoi Roussou, Charikleia Nikolaou, Evangelia D Platsouka
A rapid increase was observed in the incidence of extensively drug-resistant Acinetobacter baumannii (XDR Aba) isolates in a Greek hospital during 2014. To investigate the causes of this rise, the antimicrobial resistance profiles of all carbapenem-resistant (CARB-R) Aba isolates recovered during 2014-2015 were determined. Selected XDR Aba isolates (n = 13) were characterized by molecular methods. XDR Aba (48 isolates) represented 21.4% of the 224 CARB-R Aba recovered during the study period. The 13 selected XDR Aba isolates were positive for the blaOXA-23, the intrinsic blaOXA-51, and the adeB gene of the AdeABC efflux pump, and all belonged to the 3LST ST101, corresponding to the international clone II...
October 11, 2016: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27645236/outbreak-of-oxa-48-producing-klebsiella-pneumoniae-involving-a-sequence-type-101-clone-in-batna-university-hospital-algeria
#4
Lotfi Loucif, Ahmed Kassah-Laouar, Mahdia Saidi, Amina Messala, Widad Chelaghma, Jean-Marc Rolain
Seven nonredundant ertapenem-resistant Klebsiella pneumoniae isolates were collected between May 2014 and 19 January 2015 in the nephrology and hematology units of Batna University Hospital in Algeria. All strains coproduced the blaOXA-48, blaCTX-M-15, blaSHV-1, and blaTEM-1D genes. Six of these isolates belonged to the pandemic clone sequence type 101 (ST101). The blaOXA-48 gene was located on a conjugative IncL/M-type plasmid. This is the first known outbreak of OXA-48-producing K. pneumoniae isolates involving an ST101 clone in Batna University Hospital...
December 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27639859/increasing-incidence-of-carbapenemase-producing-escherichia-coli-and-klebsiella-pneumoniae-in-belgian-hospitals
#5
M De Laveleye, T D Huang, P Bogaerts, C Berhin, C Bauraing, P Sacré, A Noel, Y Glupczynski
Carbapenemase-producing Enterobacteriaceae are increasingly reported worldwide. The aim of the study was to determine the incidence and molecular epidemiology of carbapenemase-producing (CP) Escherichia coli and Klebsiella pneumoniae (CP-E/K) in Belgium. Eleven hospital-based laboratories collected carbapenem non-susceptible (CNS) isolates of E. coli and K. pneumoniae detected in clinical specimens from January 2013 to December 2014. All CNS strains were tested for carbapenemase production and typed by multilocus sequence typing (MLST) for a 6-month period as part of the European Survey on Carbapenemase-Producing Enterobacteriaceae in Europe (EuSCAPE) structured survey...
September 17, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27600040/molecular-epidemiology-and-genome-dynamics-of-new-delhi-metallo-beta-lactamase-ndm-producing-extraintestinal-pathogenic-e-coli-expec-strains-from-india
#6
Amit Ranjan, Sabiha Shaik, Agnismita Mondal, Nishant Nandanwar, Arif Hussain, Torsten Semmler, Narender Kumar, Sumeet Tiwari, Savita Jadhav, Lothar H Wieler, Niyaz Ahmed
The global dissemination amidst increasing incidence of carbapenem-resistant, Gram-negative organisms has resulted in acute public health concerns. Here, we present a retrospective multicenter study on molecular characterization of metallo-beta-lactamase (MBL) producing clinical E. coli isolates recovered from extraintestinal infections in two hospitals in Pune, India. We screened a large sample size of 510 E. coli isolates for MBL production wherein we profiled their molecular determinants, antimicrobial resistance phenotypes, functional virulence properties, genomic features and transmission dynamics...
September 6, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27581124/comparative-genomic-analysis-of-brazilian-leptospira-kirschneri-serogroup-pomona-serovar-mozdok
#7
Luisa Z Moreno, Frederico S Kremer, Fabiana Miraglia, Ana P Loureiro, Marcus R Eslabao, Odir A Dellagostin, Walter Lilenbaum, Andrea M Moreno
Leptospira kirschneri is one of the pathogenic species of the Leptospira genus. Human and animal infection from L. kirschneri gained further attention over the last few decades. Here we present the isolation and characterisation of Brazilian L. kirschneri serogroup Pomona serovar Mozdok strain M36/05 and the comparative genomic analysis with Brazilian human strain 61H. The M36/05 strain caused pulmonary hemorrhagic lesions in the hamster model, showing high virulence. The studied genomes presented high symmetrical identity and the in silico multilocus sequence typing analysis resulted in a new allelic profile (ST101) that so far has only been associated with the Brazilian L...
August 2016: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/27530752/the-spread-of-kpc-producing-enterobacteriaceae-in-spain-wgs-analysis-of-the-emerging-high-risk-clones-of-klebsiella-pneumoniae-st11-kpc-2-st101-kpc-2-and-st512-kpc-3
#8
Jesús Oteo, María Pérez-Vázquez, Verónica Bautista, Adriana Ortega, Pilar Zamarrón, David Saez, Sara Fernández-Romero, Noelia Lara, Raquel Ramiro, Belén Aracil, José Campos
OBJECTIVES: We analysed the microbiological traits and population structure of KPC-producing Enterobacteriaceae isolates collected in Spain between 2012 and 2014. We also performed a comparative WGS analysis of the three major KPC-producing Klebsiella pneumoniae clones detected. METHODS: Carbapenemase and ESBL genes were sequenced. The Institut Pasteur MLST scheme was used. WGS data were used to construct phylogenetic trees, to identify the determinants of resistance and to de novo assemble the genome of one representative isolate of each of the three major K...
August 15, 2016: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/27503650/first-report-of-the-globally-disseminated-incx4-plasmid-carrying-the-mcr-1-gene-in-a-colistin-resistant-escherichia-coli-sequence-type-101-isolate-from-a-human-infection-in-brazil
#9
Miriam R Fernandes, John A McCulloch, Marco A Vianello, Quézia Moura, Paula J Pérez-Chaparro, Fernanda Esposito, Luciana Sartori, Milena Dropa, Maria H Matté, Débora P A Lira, Elsa M Mamizuka, Nilton Lincopan
A colistin-resistant Escherichia coli strain was recovered from a patient with a diabetic foot infection in Brazil. Whole-genome analysis revealed that the E. coli isolate belonged to the widespread sequence type (ST) 101 and harbored the mcr-1 gene on an IncX4 plasmid that was highly similar to mcr-1-bearing IncX4 plasmids that were recently identified in Enterobacteriaceae from food, animal, and human samples recovered on different continents. These results suggest that self-transmissible IncX4-type plasmids may represent promiscuous plasmids contributing to the intercontinental spread of the mcr-1 gene...
October 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27459019/clonal-transmission-of-gram-negative-bacteria-with-carbapenemases-ndm-1-vim-1-and-oxa-23-72-in-a-bulgarian-hospital
#10
Yvonne Pfeifer, Angelina Trifonova, Michael Pietsch, Magdalena Brunner, Iva Todorova, Ivanka Gergova, Gottfried Wilharm, Guido Werner, Encho Savov
We characterized 72 isolates with reduced susceptibility to carbapenems (50 Acinetobacter spp., 13 Proteus mirabilis, five Escherichia coli, one Morganella morganii, one Enterobacter cloacae, one Providencia rettgeri, and one Pseudomonas aeruginosa) from a hospital in Sofia, Bulgaria. Different β-lactamase genes were identified by polymerase chain reaction and sequencing. Bacterial strain typing was performed by enzymatic macrorestriction and pulsed-field gel electrophoresis (PFGE) typing as well as multilocus sequence typing for selected isolates...
July 26, 2016: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27417195/diversity-of-escherichia-coli-strains-involved-in-vertebral-osteomyelitis-and-arthritis-in-broilers-in-brazil
#11
Juliana Fortes Vilarinho Braga, Nathalie Katy Chanteloup, Angélina Trotereau, Sylvie Baucheron, Rodrigo Guabiraba, Roselene Ecco, Catherine Schouler
BACKGROUND: Locomotor disorders and infections by Escherichia coli represent major concerns to the poultry industry worldwide. Avian pathogenic E. coli (APEC) is associated with extraintestinal infections leading to respiratory or systemic disease known as colibacillosis. The most common lesions seen in cases of colibacillosis are perihepatitis, airsacculitis, pericarditis, peritonitis/salpingitis and arthritis. These diseases are responsible for significant economic losses in the poultry industry worldwide...
July 14, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27409843/comparative-genomic-analysis-of-brazilian-leptospira-kirschneri-serogroup-pomona-serovar-mozdok
#12
Luisa Z Moreno, Frederico S Kremer, Fabiana Miraglia, Ana P Loureiro, Marcus R Eslabao, Odir A Dellagostin, Walter Lilenbaum, Andrea M Moreno
Leptospira kirschneri is one of the pathogenic species of the Leptospira genus. Human and animal infection from L. kirschneri gained further attention over the last few decades. Here we present the isolation and characterisation of Brazilian L. kirschneri serogroup Pomona serovar Mozdok strain M36/05 and the comparative genomic analysis with Brazilian human strain 61H. The M36/05 strain caused pulmonary hemorrhagic lesions in the hamster model, showing high virulence. The studied genomes presented high symmetrical identity and the in silico multilocus sequence typing analysis resulted in a new allelic profile (ST101) that so far has only been associated with the Brazilian L...
July 11, 2016: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/27357252/multilocus-sequence-typing-and-ctx-m-characterization-of-esbl-producing-e-coli-a-prospective-single-centre-study-in-lower-saxony-germany
#13
G Gerhold, M H Schulze, U Gross, W Bohne
The increasing prevalence of extended-spectrum β-lactamase (ESBL)-producing Gram-negative bacteria is a serious threat for current healthcare settings. In this study we investigated the molecular epidemiology of ESBL-producing E. coli at the University Medical Center Göttingen in Lower Saxony, Germany. All E. coli isolates with an ESBL phenotype were collected during a 6-month period in 2014. Multilocus sequence typing and CTX-M characterization were performed on 160 isolates. Of the ESBL-producing isolates 95·6% were CTX-M positive...
June 30, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/27324770/isolation-and-characterization-of-ndm-positive-escherichia-coli-from-municipal-wastewater-in-jeddah-saudi-arabia
#14
David Mantilla-Calderon, Muhammad Raihan Jumat, Tiannyu Wang, Pugalenthi Ganesan, Nada Al-Jassim, Pei-Ying Hong
The emergence of resistance to last-resort antibiotics is a public health concern of global scale. Besides direct person-to-person propagation, environmental pathways might contribute to the dissemination of antibiotic-resistant bacteria and antibiotic resistance genes (ARGs). Here, we describe the incidence of blaNDM-1, a gene conferring resistance to carbapenems, in the wastewater of the city of Jeddah, Saudi Arabia, over a 1-year period. blaNDM-1 was detected at concentrations ranging from 10(4) to 10(5) copies/m(3) of untreated wastewater during the entire monitoring period...
September 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27284988/isolation-of-kpc-3-producing-enterobacter-aerogenes-in-a-patient-colonized-by-mdr-klebsiella-pneumoniae
#15
Carolina Venditti, Laura Villa, Alessandro Capone, Daniela Fortini, Silvia D'Arezzo, Carla Nisii, Eugenio Bordi, Vincenzo Puro, Mario Antonini, Alessandra Carattoli, Maria Adriana Cataldo, Nicola Petrosillo, Antonino Di Caro
We describe the interspecies transmission of the plasmid-mediated blaKPC-3 gene, which confers carbapenem resistance, between clinically relevant gram-negative bacteria in a single patient. A KPC-3 producing Enterobacter aerogenes was isolated from a hospitalized patient previously colonized and then infected by a Klebsiella pneumoniae ST101 carrying the blaKPC-3 gene. The strains showed identical plasmids. Since intense horizontal exchanges among bacteria can occur in the gut, clinicians should be aware that patients colonized by carbapenem-resistant K...
June 10, 2016: New Microbiologica
https://www.readbyqxmd.com/read/27237423/multicentre-investigation-of-carbapenemase-producing-escherichia-coli-and-klebsiella-pneumoniae-in-german-hospitals
#16
Martin Kaase, Sven Schimanski, Reinhold Schiller, Bettina Beyreiß, Alexander Thürmer, Jörg Steinmann, Volkhard A Kempf, Christina Hess, Ingo Sobottka, Ines Fenner, Stefan Ziesing, Irene Burckhardt, Lutz von Müller, Axel Hamprecht, Ina Tammer, Nina Wantia, Karsten Becker, Thomas Holzmann, Martina Furitsch, Gabriele Volmer, Sören G Gatermann
Aim of this study was to determine the incidence and molecular epidemiology of carbapenemase-producing Escherichia coli and Klebsiella pneumoniae in Germany. E. coli and K. pneumoniae isolates from clinical samples which were non-susceptible to carbapenems were collected in laboratories serving 20 hospitals throughout Germany from November 2013 to April 2014. The isolates were tested for the presence of carbapenemases by PCR and phenotypic methods and typed by multilocus sequence typing. Risk factors including a previous hospitalization abroad were analysed...
September 2016: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/26871556/characteristics-of-extended-spectrum-%C3%AE-lactamase-esbl-and-pampc-beta-lactamase-producing-enterobacteriaceae-of-water-samples-in-tunisia
#17
Leila Ben Said, Ahlem Jouini, Carla Andrea Alonso, Naouel Klibi, Raoudha Dziri, Abdellatif Boudabous, Karim Ben Slama, Carmen Torres
The presence of extended-spectrum beta-lactamase and plasmid-mediated AmpC beta-lactamase producing Enterobacteriaceae (ESBL-Eb and pAmpC-Eb, respectively) was analyzed in 57 wastewater and 57 surface-water samples in Tunisia. Twenty-four of the 57 wastewater samples (42.1%) and one of the 57 surface-water samples (1.7%, a river that received effluents of a wastewater-treatment-plant) contained ESBL-Eb or pAmpC-Eb; one ESBL/pAmpC-Eb per positive sample was further characterized. Beta-lactamase genes detected were as follows: blaCTX-M-1 (10 Escherichia coli),blaCTX-M-15 (eight E...
April 15, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/26739225/apramycin-treatment-affects-selection-and-spread-of-a-multidrug-resistant-escherichia-coli-strain-able-to-colonize-the-human-gut-in-the-intestinal-microbiota-of-pigs
#18
Ana Herrero-Fresno, Camilla Zachariasen, Monica Hegstad Hansen, Alexander Nielsen, Rene S Hendriksen, Søren Saxmose Nielsen, John Elmerdahl Olsen
The effect of apramycin treatment on transfer and selection of an Escherichia coli strain (E. coli 912) in the intestine of pigs was analyzed through an in vivo experiment. The strain was sequenced and assigned to the sequence type ST101 and serotype O11. It carried resistance genes to apramycin/gentamicin, sulphonamide, tetracycline, hygromycin B, β-lactams and streptomycin [aac(3)-IV, sul2, tet(X), aph(4), bla TEM-1 and strA/B], with all but tet(X) located on the same conjugative plasmid. Nineteen pigs were randomly allocated into two inoculation groups, one treated with apramycin (pen 2) and one non-treated (pen 3), along with a non-inoculated control group (pen 1)...
January 7, 2016: Veterinary Research
https://www.readbyqxmd.com/read/26653099/rapid-dissemination-of-colistin-and-carbapenem-resistant-acinetobacter-baumannii-in-central-greece-mechanisms-of-resistance-molecular-identification-and-epidemiological-data
#19
O Oikonomou, S Sarrou, C C Papagiannitsis, S Georgiadou, K Mantzarlis, E Zakynthinos, G N Dalekos, E Petinaki
BACKGROUND: Colistin-resistant/carbapenem-resistant Acinetobacter baumannii is a significant challenge for antibiotic treatment and infection control policies. Since 2012, in Central Greece an increase of colistin/pan- resistant A. baumannii has occurred, indicating the need for further analysis. METHODS: A total of 86 colistin-resistant/carbapenem-resistant out of 1228 A. baumannii clinical isolates, consecutively collected between 2012 and 2014 in a tertiary Greek hospital of Central Greece, as well as one environmental isolate from surveillance cultures were studied...
2015: BMC Infectious Diseases
https://www.readbyqxmd.com/read/26578264/potentiation-of-acetylcholine-mediated-facilitation-of-inhibitory-synaptic-transmission-by-an-azaindolizione-derivative-zset1446-st101-in-the-rat-hippocampus
#20
Kentaro Takeda, Yoshimasa Yamaguchi, Masataka Hino, Fusao Kato
The integrity of the hippocampal network depends on the coordination of excitatory and inhibitory signaling, which are under dynamic control by various regulatory influences such as the cholinergic systems. ZSET1446 (ST101; spiro[imidazo[1,2-a]pyridine-3,2-indan]-2(3H)-one) is a newly synthesized azaindolizinone derivative that significantly improves learning deficits in various types of Alzheimer disease (AD) models in rats. We examined the effect of ZSET1446 on the nicotinic acetylcholine (ACh) receptor (nAChR)-mediated regulation of synaptic transmission in hippocampal slices of rats...
February 2016: Journal of Pharmacology and Experimental Therapeutics
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