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extended spectrum beta lactamase

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https://www.readbyqxmd.com/read/27933141/emergence-of-serotype-k1-klebsiella-pneumoniae-st23-strains-co-producing-the-plasmid-mediated-ampc-beta-lactamase-dha-1-and-an-extended-spectrum-beta-lactamase-in-korea
#1
Hae Suk Cheong, Doo Ryeon Chung, Chaeyoeng Lee, So Hyun Kim, Cheol-In Kang, Kyong Ran Peck, Jae-Hoon Song
BACKGROUND: Serotype K1 Klebsiella pneumoniae has emerged as an important community pathogen causing various infections, including liver abscesses. Although serotype K1 K. pneumoniae community isolates have been reported as susceptible to most classes of antimicrobial agents, a few cases of infection caused by extended-spectrum beta-lactamase (ESBL)-producing serotype K1 K. pneumoniae have recently been reported in Asian countries. We identified three ESBL-producing strains of serotype K1 K...
2016: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/27930570/successful-treatment-of-a-rare-extended-retroperitoneal-necrotizing-soft-tissue-infection-caused-by-extended-spectrum-beta-lactamase-producing-escherichia-coli-a-case-report
#2
Rui He, Xin Qi, Bing Wen, XiangYan Li, Li Guo
RATIONALE: Retroperitoneal necrotizing soft tissue infection (NSTI) is a rare but life-threatening disease. Here, we present a case of extended retroperitoneal NSTI caused by extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli (E coli). PATIENT CONCERNS: The patient complained of progressive redness, swelling, and right flank pain for 10 days, extending to the scrotum for 1 day. DIAGNOSES: He was admitted with an initial diagnosis of cellulitis...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27928484/the-clonal-relationship-among-the-citrobacter-freundii-isolated-from-the-main-hospital-in-kermanshah-west-of-iran
#3
Mansour Rezaei, Alisha Akya, Azam Elahi, Keyghobad Ghadiri, Somayeh Jafari
BACKGROUND AND OBJECTIVES: Citrobacter freundii is an opportunistic pathogen causing nosocomial infections and resistant to various antibiotics. We aimed to determine the clonal relationship of C. freundii isolates using Pulsed-Field Gel Electrophoresis (PFGE). MATERIALS AND METHODS: Fifty clinical isolates of C. freundii were collected from the main hospital in Kermanshah. After antibiotic susceptibility testing and screening for extended-spectrum beta lactamase (ESBL), all isolates were genotyped by PFGE...
June 2016: Iranian Journal of Microbiology
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
#4
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/27919890/prevalence-of-esbl-and-or-carbapenemase-producing-escherichia-coli-isolated-from-yellow-legged-gulls-from-barcelona-spain
#5
Andrea Vergara, Cristina Pitart, Tomás Montalvo, Ignasi Roca, Sara Sabaté, Juan Carlos Hurtado, Raquel Planell, Francesc Marco, Beatriz Ramírez, Víctor Peracho, Mercé de Simón, Jordi Vila
Seventy two (54.5%) out of 132 fecal samples were positive for either extended spectrum beta-lactamases (ESBL) (51.5%), carbapenemase (1.5%) or cephamycinase (1.5%) producing Escherichia coli from a group of yellow-legged gulls in Barcelona, Spain. The isolation of two carbapenemase-producing E. coli strains is a matter of concern.
December 5, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27919513/-rapid-test-for-detection-of-susceptibility-to-cefotaxime-in-enterobacteriaceae
#6
Gemma Jiménez-Guerra, Yannik Hoyos-Mallecot, Javier Rodríguez-Granger, José María Navarro-Marí, José Gutiérrez-Fernández
In this work an "in house" rapid test based on the change in pH that is due to hydrolysis for detecting Enterobacteriaceae susceptible to cefotaxime is evaluated. The strains of Enterobacteriaceae from 1947 urine cultures were assessed using MicroScan panels and the "in house" test. This rapid test includes red phenol solution and cefotaxime. Using MicroScan panels, 499 Enterobacteriaceae isolates were evaluated, which included 27 isolates of Escherichia coli producing extended-spectrum beta-lactamases (ESBL), 16 isolates of Klebsiella pneumoniae ESBL and 1 isolate of Klebsiella oxytoca ESBL...
December 2, 2016: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/27916621/point-should-inhaled-antibiotic-therapy-be-routinely-used-for-the-treatment-of-bacterial-lower-respiratory-tract-infections-in-the-icu-setting-yes
#7
EDITORIAL
Richard G Wunderink
Routine use of aerosolized antibiotics is the most rational approach to the current treatment dilemmas for severe hospital-acquired pneumonia (HAP) requiring endotracheal intubation or ventilator-associated pneumonia (VAP). The two main issues for HAP/VAP are inappropriate initial therapy and ineffective therapy for multidrug resistant (MDR) pathogens, particularly gram negative bacilli such as Pseudomonas aeruginosa and Acinetobacter species. The emergence of extended spectrum beta-lactamases (ESBL) and carbapenem resistance in Enterobacteriaceae (CRE) have made even common pathogens such as Escherichia coli difficult to treat...
November 22, 2016: Chest
https://www.readbyqxmd.com/read/27915096/universal-contact-precautions-do-not-change-the-prevalence-of-antibiotic-resistant-organisms-in-a-tertiary-burn-unit
#8
Adelyn L Ho, Reid Chambers, Claudia Malic, Anthony Papp
OBJECTIVE: The prevalence of antibiotic-resistant organisms (ARO) in burn units is increasing worldwide and contributes significantly to morbidity and mortality. Study aims are to describe the burden of AROs in burn patients admitted to a tertiary burn unit, to evaluate the impact of contact precautions implemented after an outbreak of antibiotic-resistant Acinetobacter baumannii, and to identify possible predictors of ARO acquisition. METHODS: Data of burn inpatients between 2006 and 2010 were retrospectively reviewed...
November 30, 2016: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/27911458/spondylodiscitis-a-rare-complication-following-percutaneous-nephrostomy
#9
Francesco Chiancone, Maurizio Fedelini, Clemente Meccariello, Luigi Pucci, Marco Fabiano, Paolo Fedelini
Spondylodiscitis is an inflammation of the intervertebral disc and the adjacent vertebral bodies. The spondylodiscitis can not only be a complication of medical interventions such as an operation near spinal column but also urogenital and vascular interventions and intravenous catheter use. A 71-year-old man was admitted to our emergency department with fever and severe abdominal pain. Antibiotic therapy had been performed with intravenous administration of 2 g of ceftriaxone and the patient underwent the placement of a percutaneous nephrostomy according to Seldinger technique...
November 28, 2016: Urologia
https://www.readbyqxmd.com/read/27905467/direct-identification-of-antibiotic-resistance-genes-on-single-plasmid-molecules-using-crispr-cas9-in-combination-with-optical-dna-mapping
#10
Vilhelm Müller, Fredrika Rajer, Karolin Frykholm, Lena K Nyberg, Saair Quaderi, Joachim Fritzsche, Erik Kristiansson, Tobias Ambjörnsson, Linus Sandegren, Fredrik Westerlund
Bacterial plasmids are extensively involved in the rapid global spread of antibiotic resistance. We here present an assay, based on optical DNA mapping of single plasmids in nanofluidic channels, which provides detailed information about the plasmids present in a bacterial isolate. In a single experiment, we obtain the number of different plasmids in the sample, the size of each plasmid, an optical barcode that can be used to identify and trace the plasmid of interest and information about which plasmid that carries a specific resistance gene...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905262/should-the-patients-colonized-with-extended-spectrum-beta-lactamase-producing-gram-negative-bacilli-e-gnb-coming-to-hospital-from-the-community-with-pneumonia-get-anti-e-gnb-active-empirical-treatment
#11
Lara Peterlin, Mateja Žagar, Tatjana Lejko Zupanc, Marija Paladin, Bojana Beović
Extended-spectrum beta-lactamases are responsible for resistance of Gram-negative bacilli to several beta-lactam antibiotics, including those prescribed for treatment pneumonia. To evaluate the importance of colonization with E-GNB for the choice of empirical treatment we performed a retrospective case-control study including 156 patients, hospitalized for treatment of pneumonia from 2009 through 2013. Empirical treatment success and in-hospital survival were significantly lower in patients colonized with E-GNB compared to non-colonized (p = 0...
December 1, 2016: Journal of Chemotherapy
https://www.readbyqxmd.com/read/27904884/escherichia-coli-sequence-type-131-h30-is-the-main-driver-of-emerging-extended-spectrum-%C3%AE-lactamase-producing-e-coli-at-a-tertiary-care-center
#12
James R Johnson, Brian Johnston, Paul Thuras, Bryn Launer, Evgeni V Sokurenko, Loren G Miller
The H30 strain of Escherichia coli sequence type 131 (ST131-H30) is a recently emerged, globally disseminated lineage associated with fluoroquinolone resistance and, via its H30Rx subclone, the CTX-M-15 extended-spectrum beta-lactamase (ESBL). Here, we studied the clonal background and resistance characteristics of 109 consecutive recent E. coli clinical isolates (2015) and 41 historical ESBL-producing E. coli blood isolates (2004 to 2011) from a public tertiary care center in California with a rising prevalence of ESBL-producing E...
November 2016: MSphere
https://www.readbyqxmd.com/read/27903600/improved-accuracy-of-cefepime-susceptibility-testing-for-esbl-producing-enterobacteriaceae-using-an-on-demand-digital-dispensing-method
#13
Kenneth P Smith, Thea Brennan-Krohn, Susan Weir, James E Kirby
Extended-spectrum beta-lactamase (ESBL) producing Enterobacteriaceae generally cannot be treated with penicillins and cephalosporins. However, some later generation cephalosporins, including cefepime, are poorly hydrolyzed by specific ESBL enzymes, and certain strains demonstrate in vitro susceptibility to these agents, potentially affording additional treatment opportunities. Moreover, the ability to adjust both dose and dosing interval of β-lactam agents allows treatment of strains with elevated minimal inhibitory concentrations (MICs) formerly classified in the intermediate range...
November 30, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27894763/extended-spectrum-beta-lactamase-esbl-producing-bacteria-urinary-tract-infections-and-complex-pediatric-urology
#14
Ruth Wragg, Anna Harris, Mitul Patel, Andrew Robb, Harish Chandran, Liam McCarthy
AIM OF THE STUDY: Extended spectrum beta lactamase (ESBL) producing bacteria are resistant to most beta-lactam antibiotics including third-generation cephalosporins, quinolones and aminoglycosides. This resistance is plasmid-borne and can spread between species. Management of ESBL is challenging in children with recurrent urinary tract infections (UTIs) and complex urological abnormalities. We aim to quantify the risk in children and specifically in urological patients. METHODS: Retrospective review of a microbiology database (April 2014 to November 2015)...
November 13, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27891664/healthcare-costs-doubled-when-children-had-urinary-tract-infections-caused-by-extended-spectrum-%C3%AE-lactamase-producing-bacteria
#15
Oona Nieminen, Matti Korppi, Merja Helminen
AIM: The impact of the emergence of antimicrobial resistant organisms has rarely been studied in children, including the healthcare costs of urinary tract infections (UTIs) caused by extended-spectrum beta-lactamase (ESBL)-producing bacteria. We evaluated the effect of ESBL on UTI healthcare costs and risk factors for paediatric UTIs. METHODS: This retrospective case-control study covered 2005-2014 and focused on children below 16 years of age treated in a University hospital: 22 children with UTIs caused by ESBL-producing bacteria and 56 ESBL-negative UTI controls...
November 7, 2016: Acta Paediatrica
https://www.readbyqxmd.com/read/27890366/in%C3%A2-vitro-biofilm-formation-in-esbl-producing-escherichia-coli-isolates-from-cage-birds
#16
Ebru Sebnem Yılmaz, Nur Ceyhan Güvensen
OBJECTIVE: To determine biofilm and hydrophobicity formation ratios in extended spectrum beta lactamases (ESBL) synthesizing Escherichia coli isolates which were isolated from feces samples of 150 cage bird species randomly taken from pet shops in Hatay province, Turkey. METHODS: In vitro biofilm production of 4 ESBL positive isolates were performed by Congo Red Agar (CRA), Standard Tube (ST) and Microtitre Plate (MP) methods while their hydrophobicity were examined by bacterial adhesion to hydrocarbon (BATH) test...
November 2016: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/27889879/plasmid-mediated-quinolone-resistance-in-enterobacteriaceae-a-systematic-review-with-a-focus-on-mediterranean-countries
#17
REVIEW
B Yanat, J-M Rodríguez-Martínez, A Touati
Quinolones are a family of synthetic broad-spectrum antimicrobial drugs. These molecules have been widely prescribed to treat various infectious diseases and have been classified into several generations based on their spectrum of activity. Quinolones inhibit bacterial DNA synthesis by interfering with the action of DNA gyrase and topoisomerase IV. Mutations in the genes encoding these targets are the most common mechanisms of high-level fluoroquinolone resistance. Moreover, three mechanisms for plasmid-mediated quinolone resistance (PMQR) have been discovered since 1998 and include Qnr proteins, the aminoglycoside acetyltransferase AAC(6')-Ib-cr, and plasmid-mediated efflux pumps QepA and OqxAB...
November 26, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27887603/genetic-elements-associated-with-antimicrobial-resistance-among-avian-pathogenic-escherichia-coli
#18
Amal Awad, Nagah Arafat, Mohamed Elhadidy
BACKGROUND: Avian-pathogenic Escherichia coli (APEC) are pathogenic strains of E. coli that are responsible for one of the most predominant bacterial disease affecting poultry worldwide called avian colibacillosis. This study describes the genetic determinants implicated in antimicrobial resistance among APEC isolated from different broiler farms in Egypt. METHODS: A total of 116 APEC were investigated by serotyping, antimicrobial resistance patterns to 10 antimicrobials, and the genetic mechanisms underlying the antimicrobial-resistant phenotypes...
November 25, 2016: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/27885293/prevalence-of-extended-spectrum-beta-lactamase-producing-klebsiella-pneumoniae-isolated-from-urinary-tract-infected-patients
#19
P Chaudhary, D Bhandari, K Thapa, P Thapa, D Shrestha, H K Chaudhary, A Shrestha, H Parajuli, B P Gupta
BACKGROUND: Klebsiella pneumoniae, one of the bacterial agents associated with urinary tract infection has been often implicated as a major extended spectrum beta-lactamase (ESBL) producer in last few decades. This study was designed to assess the prevalence of ESBL producing Klebsiella pneumoniae in urinary isolates at a tertiary care hospital in Kathmandu, Nepal, from July to December 2014. METHODS: One thousand nine hundred eighty six mid-stream urine specimens were collected aseptically from the clinically suspected patients of urinary tract infections attending Capital Hospital and Research Center, Kathmandu...
May 2016: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/27878781/successful-elimination-of-extended-spectrum-beta-lactamase-esbl-producing-nosocomial-bacteria-at-a-neonatal-intensive-care-unit
#20
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
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