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https://www.readbyqxmd.com/read/27921337/extended-spectrum-cephalosporin-resistance-among-clinical-isolates-of-enterobacteriaceae-in-west-norway-during-2006-2013-a-prospective-surveillance-study
#1
Haima Mylvaganam, Helge Kolstad, Rebecca Irene Breistein, Grete Lind, Dag Harald Skutlaberg
Routine surveillance of resistance to broad-spectrum cephalosporins in Enterobacteriaceae and phenotypic identification of underlying mechanisms using a simple strategy was commenced in 2006 at our laboratory, serving West Norway. This report focuses on the results until 2013. The classical plasmid-mediated extended spectrum beta-lactamase (ESBLA ) among clinically relevant Escherichia coli isolates showed an increase from 0.6% to 4.3% during the surveillance period, while prevalence for other mechanisms remained stable, below 0...
December 6, 2016: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/27919898/a-prolonged-outbreak-of-kpc-3-producing-enterobacter-cloacae-and-klebsiella-pneumoniae-driven-by-multiple-mechanisms-of-resistance-transmission-at-a-large-academic-burn-center
#2
Hajime Kanamori, Christian M Parobek, Jonathan J Juliano, David van Duin, Bruce A Cairns, David J Weber, William A Rutala
Klebsiella pneumoniae carbapenemase (KPC)-producing Enterobacter cloacae have been recently recognized in the United States. Whole-genome sequencing (WGS) has become a useful tool for analysis of outbreaks and for determining transmission networks of multidrug-resistant organisms in healthcare settings, including carbapenem-resistant Enterobacteriaceae (CRE). We experienced a prolonged outbreak of CRE of E. cloacae and K. pneumoniae over a three-year period at a large academic burn center despite rigorous infection control measures...
December 5, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27911010/screening-of-mercury-resistant-and-indole-3-acetic-acid-producing-bacterial-consortium-for-growth-promotion-of-cicer-arietinum-l
#3
Aatif Amin, Zakia Latif
Mercury resistant (Hg(R) ) bacteria were screened from industrial effluents and effluents-polluted rhizosphere soils near to districts Kasur and Sheikhupura, Pakistan. Out of 60 isolates, three bacterial strains, Bacillus sp. AZ-1, Bacillus cereus AZ-2, and Enterobacter cloacae AZ-3 showed Hg-resistance as 20 μg ml(-1) of HgCl2 and indole-3-acetic acid (IAA) production as 8-38 μg ml(-1) . Biochemical and molecular characterization of selected bacteria was confirmed by 16S ribotyping. Mercury resistant genes merA, merB, and merE of mer operon in Bacillus spp...
December 2, 2016: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/27910262/enterobacter-sp-lu1-as-a-novel-succinic-acid-producer-co-utilization-of-glycerol-and-lactose
#4
Marcin Podleśny, Piotr Jarocki, Jakub Wyrostek, Tomasz Czernecki, Jagoda Kucharska, Anna Nowak, Zdzisław Targoński
Succinic acid is an important C4-building chemical platform for many applications. A novel succinic acid-producing bacterial strain was isolated from goat rumen. Phylogenetic analysis based on the 16S rRNA sequence and physiological analysis indicated that the strain belongs to the genus Enterobacter. This is the first report of a wild bacterial strain from the genus Enterobacter that is capable of efficient succinic acid production. Co-fermentation of glycerol and lactose significantly improved glycerol utilization under anaerobic conditions, debottlenecking the utilization pathway of this valuable biodiesel waste product...
December 1, 2016: Microbial Biotechnology
https://www.readbyqxmd.com/read/27904542/the-effect-of-brushing-with-a-soft-toothbrush-and-distilled-water-on-the-incidence-of-ventilator-associated-pneumonia-in-the-intensive-care-unit
#5
Khadijeh Nasiriani, Fakhri Torki, Mohammad Hossein Jarahzadeh, Fahimeh Rashidi Maybodi
BACKGROUND: Ventilator-associated pneumonia (VAP) is a common nosocomial infection, which results in longer hospitalization, increased treatment costs, and higher mortality rates. One major cause of VAP is colonization and microaspiration of oropharyngeal secretions following the formation of dental plaque, which is due to poor oral hygiene and failure to mechanically remove these microorganisms from the teeth. This study was conducted to determine the effect of brushing teeth with distilled water on the incidence of VAP in patients admitted to intensive care unit (ICU)...
2016: Tanaffos
https://www.readbyqxmd.com/read/27902398/clonal-spread-and-accumulation-of-beta-lactams-resistance-determinants-in-enterobacter-aerogenes-and-enterobacter-cloacae-complex-isolates-from-infection-and-colonization-in-patients-at-a-public-hospital-in-recife-pernambuco-brazil
#6
Adriane Borges Cabral, Maria Amélia Vieira Maciel, Josineide Ferreira Barros, Marcelo Maranhão Antunes, Célia Maria Machado Barbosa de Castro, Ana Catarina Souza Lopes
Enterobacter aerogenes and Enterobacter cloacae complex are the species of this genus most involved in healthcare-associated infections (HAIs), that are ESBL and carbapenemase producers. This study has characterized phenotypically and genotypically 51 isolates of E. aerogenes and E. cloacae complex as originated from infection or colonization in patients admitted to public hospital in Recife, Pernambuco, Brazil, by antimicrobial susceptibility profile, analysis of β-lactamase genes (blaTEM, blaSHV, blaCTX-M, blaKPC, blaVIM, blaIMP and blaSPM), PCR and DNA sequencing, plasmid profile and ERIC-PCR...
November 28, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27902205/enterobacter-aerogenes-hormaeche-and-edwards-1960-approved-lists-1980-and-klebsiella-mobilis-bascomb-et-al-1971-approved-lists-1980-share-the-same-nomenclatural-type-atcc-13048-on-the-approved-lists-and-are-homotypic-synonyms-with-consequences-for-the-name
#7
B J Tindall, G Sutton, G M Garrity
Enterobacter aerogenes Hormaeche and Edwards 1960 (Approved Lists 1980) and Klebsiella mobilis Bascomb et al. 1971 (Approved Lists 1980) were placed on the Approved Lists of Bacterial Names and were based on the same nomenclatural type, ATCC 13048. Consequently they are to be treated as homotypic synonyms. However, the names of homotypic synonyms at the rank of species normally are based on the same epithet. Examination of the Rules of the International Code of Nomenclature of Bacteria in force at the time indicates that the name the epithet mobilis in Klebsiella mobilis Bascomb et al...
October 13, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27900513/synthesis-and-antimicrobial-evaluation-of-ester-linked-1-4-disubstituted-1-2-3-triazoles-with-a-furyl-thienyl-moiety
#8
C P Kaushik, Raj Luxmi, Dharmendra Singh, Ashwani Kumar
Twenty ester-linked 1,4-disubstituted 1,2,3-triazoles having a furyl/thienyl moiety have been synthesized from heteroaryl prop-2-yn-1-yl carboxylate and aromatic azides via a Cu(I) catalyzed 1,3-dipolar cycloaddition. All the synthesized compounds were characterized by FTIR, [Formula: see text]H NMR, [Formula: see text]C NMR spectroscopy and HRMS. Synthesized triazoles were tested in vitro for antimicrobial evaluation against Gram-negative bacteria-Escherichia coli, Enterobacter aerogenes and Klebsiella pneumoniae; Gram-positive bacteria-Staphylococcus aureus and two fungal strains-Candida albicans and Aspergillus niger, reflecting moderate to good activity...
November 29, 2016: Molecular Diversity
https://www.readbyqxmd.com/read/27897435/-evaluation-of-an-immunochromatographic-test-for-the-detection-of-oxa-48-carbapenemase
#9
C Mediavilla-Gradolph, R Sáinz-Rodriguez, M Valverde-Troya, I de Toro-Peinado, M P Bermudez-Ruíz, B Palop-Borrás
OBJECTIVE: Detection and differentiation of various types of carbapenemases is crucial to their control and dissemination. OXA-48 is the most common carbapenemase in Spain and in our environment. The aim of this study is the evaluation of a new immunochromatographic test OXA-48 Card letitest (Coris, BioConcept Belgium) to detect this carbapenemase from solid media. METHODS: During the last year 151 strains of carbapenemase producing bacteria have been isolated, of which 136 were OXA-48 (126 Klebsiella pneumoniae, 1 Klebsiella oxytoca, 5 Escherichia coli, 4 Enterobacter cloacae), and 15 producing other carbapenemases ...
November 25, 2016: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/27894288/bactericidal-and-antioxidant-properties-of-essential-oils-from-the-fruits-dennettia-tripetala-g-baker
#10
Sunday O Okoh, Benson C Iweriegbor, Omobola O Okoh, Uchechukwu U Nwodo, Anthony I Okoh
BACKGROUND: The antibacterial and antioxidant properties of the essential oils (EOs) of unripe and ripe fruits of Dennettia tripetala and their potential for the management of infectious and oxidative-stress diseases were investigated in-vitro in this study. METHOD: Essential oil obtained from the fruit in Clevenger modified apparatus, was characterized by high resolution GC-MS, while antioxidant and antibacterial properties were tested by spectrophotometric and agar diffusion methods respectively...
November 28, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27889603/two-symbiotic-bacteria-of-the-entomopathogenic-nematode-heterorhabditis-spp-against-galleria-mellonella
#11
Chunli Liao, Along Gao, Bingbing Li, Mengjun Wang, Linna Shan
The entomopathogenic nematode Heterorhabditis spp. is considered a promising agent in the biocontrol of injurious insects of agriculture. However, different symbiotic bacteria associated with the nematode usually have different specificity and virulence toward their own host. In this study, two symbiotic bacteria, LY2W and NK, were isolated from the intestinal canals of two entomopathogenic nematode Heterorhabditis megidis 90 (PDSj1 and PDSj2) from Galleria mellonela, separately. To determine their species classification, we carried out some investigations on morphology, culture, biochemistry, especially 16S rDNA sequence analyses...
November 23, 2016: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/27889169/characterization-of-biocide-tolerant-bacteria-isolated-from-cheese-and-dairy-small-medium-enterprises
#12
Ma Luisa Fernández Márquez, Ma José Grande Burgos, Ma Carmen López Aguayo, Rubén Pérez Pulido, Antonio Gálvez, Rosario Lucas
A collection of 120 bacterial isolates from small medium enterprises involved in the production of cow milk and the manufacture of goat cheese were screened for sensitivity to biocides benzalkonium chloride (BC), cetrimide (CT), hexadecylpyridinium chloride (HDP), triclosan (TC), hexachlorophene (CF) and poly-(hexamethylen guanidinium) hydrochloride (PHMG). Nineteen isolates were selected according to biocide tolerance and identified by 16S rDNA sequencing as Lactococcus sp. (6) Enterococcus sp. (1), Lactobacillus sp...
April 2017: Food Microbiology
https://www.readbyqxmd.com/read/27878781/successful-elimination-of-extended-spectrum-beta-lactamase-esbl-producing-nosocomial-bacteria-at-a-neonatal-intensive-care-unit
#13
Borbála Szél, Zsolt Reiger, Edit Urbán, Andrea Lázár, Krisztina Mader, Ivelina Damjanova, Kamilla Nagy, Gyula Tálosi
BACKGROUND: Extended-spectrum beta-lactamase (ESBL)-producing Gram-negative bacteria are highly dangerous to neonates. At our Neonatal Intensive Care Unit (NICU), the presence of these bacteria became so threatening in 2011 that immediate intervention was required. METHODS: This study was conducted during a nearly two-year period consisting of three phases: retrospective (9 months), educational (3 months) and prospective (9 months). Based on retrospective data analysis, a complex management plan was devised involving the introduction of the INSURE protocol, changes to the antibiotic regimen, microbiological screening at short intervals, progressive feeding, a safer bathing protocol, staff hand hygiene training and continuous monitoring of the number of newly infected and newly colonized patients...
November 23, 2016: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/27878485/biofilms-in-bioremediation-and-wastewater-treatment-characterization-of-bacterial-community-structure-and-diversity-during-seasons-in-municipal-wastewater-treatment-process
#14
Yousra Turki, Ines Mehri, Rim Lajnef, Asma Ben Rejab, Amel Khessairi, Hanene Cherif, Hadda Ouzari, Abdennaceur Hassen
The bacterial community structure and diversity were assessed at the scale of rotating biodisk procedure (RB) in a semi-industrial pilot plant. As well, the Salmonella community was particularly monitored, and the effects of ultraviolet (UV-C254) on the bacterial community were studied. The identification of dominant bacteria revealed the presence of beneficial and useful species that could play an important role in the process of wastewater purification. Several species as Enterobacter agglomerans, Cronobacter sakazakii, and Pantoea agglomerans known for their bioremediation activities were revealed in the majority of biofilm samples...
November 22, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27877172/regulated-inflammation-and-lipid-metabolism-in-colon-mrna-expressions-of-obese-germfree-mice-responding-to-enterobacter-cloacae-b29-combined-with-the-high-fat-diet
#15
Huiying Yan, Na Fei, Guojun Wu, Chenhong Zhang, Liping Zhao, Menghui Zhang
Increased evidences have demonstrated that gut microbiota targeted diet intervention can alleviate obesity and related metabolic disorders. The underlying mechanism of interactions among diet, microbiota, and host still remains unclear. Enterobacter cloacae B29, an endotoxin-producing strain dominated in the gut of a morbidly obese volunteer (weight 174.8 kg, BMI 58.8 kg m(-2)) was isolated and transplanted to germfree mice (inoculated 10(10) cells of B29 per day for 1 week). Using deep mRNA sequencing technology, we compared different gene expression profiles in the colon samples of the germfree mice treated with/without B29 and/or high fat diet (HFD) for 16 weeks and identified 279 differential expressed genes in total, including up-regulated genes Apoa4 (fold change, 2...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27866753/-molecular-epidemiology-of-carbapenemase-producing-enterobacteriaceae-infection-colonisation-in-a-hospital-in-madrid
#16
Patricia Brañas, Marta Gil, Jennifer Villa, María Ángeles Orellana, Fernando Chaves
INTRODUCTION: A description is presented on the molecular epidemiology of carbapenemase-producing enterobacteriaceae infection in a tertiary hospital. MATERIAL AND METHODS: A study was made on all the carbapenemase-producing enterobacteriaceae isolations obtained between February 2015 and March 2016 in the Hospital Universitario 12 de Octubre (Madrid). Phenotypic and molecular methods were used. RESULTS: A total of 7 bacterial species were identified, with the majority being Klebsiella pneumoniae (K...
November 17, 2016: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/27859671/rapid-differentiation-of-cocci-mixed-bacteria-from-rods-in-voided-urine-culture-of-women-with-uncomplicated-urinary-tract-infections
#17
Chun-Chun Yang, Stephen Shei-Dei Yang, Hui-Ching Hung, I-Ni Chiang, Chiung-Hui Peng, Shang-Jen Chang
OBJECTIVES: To evaluate the ability of laser flow cytometry to predict cocci/mixed growth in the pre-analytical phase of urine specimens. METHODS: We retrospectively reviewed urine samples from women with uncomplicated urinary tract infections from urologic clinics for study. Urine analyses were performed with laser flow cytometry (UF1000i, Sysmex, Kobe, Japan) and then diagrams were generated (forward scatter vs. fluorescent light scatter). Each specimen (bacteria count >357 BACT/μL) was classified as either cocci bacteria or rods/mixed growth according to the diagrams...
November 15, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27857195/synthesis-of-3r-acetoin-and-2-3-butanediol-isomers-by-metabolically-engineered-lactococcus-lactis
#18
Vijayalakshmi Kandasamy, Jianming Liu, Shruti Harnal Dantoft, Christian Solem, Peter Ruhdal Jensen
The potential that lies in harnessing the chemical synthesis capabilities inherent in living organisms is immense. Here we demonstrate how the biosynthetic machinery of Lactococcus lactis, can be diverted to make (3R)-acetoin and the derived 2,3-butanediol isomers meso-(2,3)-butanediol (m-BDO) and (2R,3R)-butanediol (R-BDO). Efficient production of (3R)-acetoin was accomplished using a strain where the competing lactate, acetate and ethanol forming pathways had been blocked. By introducing different alcohol dehydrogenases into this strain, either EcBDH from Enterobacter cloacae or SadB from Achromobacter xylosooxidans, it was possible to achieve high-yield production of m-BDO or R-BDO respectively...
November 18, 2016: Scientific Reports
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
#19
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/27834174/a-metagenomic-analysis-displays-the-diverse-microbial-community-of-a-vermicomposting-system-in-uganda
#20
Anne-Lie Blomström, Cecilia Lalander, Allan John Komakech, Björn Vinnerås, Sofia Boqvist
BACKGROUND: Vermicomposting is a mesophilic process using earthworms to efficiently and at low cost process large volumes of organic waste. It has been suggested to not only increase soil fertility but also increase biomass of beneficial bacteria while reducing harmful bacteria. The aim of this study was to set up a strategy to investigate and characterise the viral as well as the bacterial composition of a vermicomposting system. MATERIAL AND METHODS: The vermicomposting unit used in this study was placed at the Makerere University Agricultural Research Institute Kabanyolo on the outskirts of Kampala, Uganda, and was fed with 80% cattle manure and 20% food waste...
2016: Infection Ecology & Epidemiology
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