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Extended spectrum beta-lactamases

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https://www.readbyqxmd.com/read/28331866/clinical-response-and-outcome-in-patients-with-multidrug-resistant-gram-negative-infections
#1
Masoume Malekolkottab, Lida Shojaei, Hossein Khalili, Mahsa Doomanlou
OBJECTIVE: In this study, frequency and antimicrobial sensitivity pattern of multidrug resistant (MDR) microorganisms were evaluated in a referral teaching hospital in Iran. METHODS: Patients with MDR Gram-negative pathogens were followed during the course of hospitalization. Demographic data, baseline diseases, type of biological sample, isolated microorganism, type of infection, antibiotic regimen before the availability of the culture result and change in the antibiotic regimen following receiving the antibiogram results, response to the treatment regimen, and duration of hospitalization and patient's outcome were considered variables for each recruited patient...
January 2017: Journal of Research in Pharmacy Practice
https://www.readbyqxmd.com/read/28323856/risk-factors-for-esbl-producing-escherichia-coli-on-pig-farms-a-longitudinal-study-in-the-context-of-reduced-use-of-antimicrobials
#2
Wietske Dohmen, Alejandro Dorado-García, Marc J M Bonten, Jaap A Wagenaar, Dik Mevius, Dick J J Heederik
The presence of extended-spectrum beta-lactamase-producing Escherichia coli (ESBL-E. coli) in food animals is a public health concern. This study aimed to determine prevalence of ESBL-E. coli on pig farms and to assess the effect of reducing veterinary antimicrobial use (AMU) and farm management practices on ESBL-E. coli occurrence on pig farms. During 2011-2013, 36 Dutch conventional pig farms participated in a longitudinal study (4 sampling times in 18 months). Rectal swabs were taken from 60 pigs per farm and pooled per 6 pigs within the same age category...
2017: PloS One
https://www.readbyqxmd.com/read/28320357/outcome-of-neurological-early-rehabilitation-patients-carrying-multi-drug-resistant-bacteria-results-from-a-german-multi-center-study
#3
J D Rollnik, M Bertram, C Bucka, M Hartwich, M Jöbges, G Ketter, B Leineweber, M Mertl-Rötzer, D A Nowak, T Platz, K Scheidtmann, R Thomas, F von Rosen, C W Wallesch, H Woldag, P Peschel, J Mehrholz, M Pohl
BACKGROUND: Colonization or infection with multi-drug resistant (MDR) bacteria is considered detrimental to the outcome of neurological and neurosurgical early rehabilitation patients. METHODS: In a German multi-center study, 754 neurological early rehabilitation patients were enrolled and and reviewed in respect to MDR status, length of stay (LOS) and the following outcome variables: Barthel Index (BI), Early Rehabilitation Index (ERI), Glasgow Outcome Score Extended (GOSE), Coma Remission Scale (CRS), Functional Ambulation Categories (FAC)...
March 20, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28315144/monitoring-antimicrobial-resistance-amr-using-cusum-control-charts
#4
L Righi, R Amarsy, M-Q Picat, M Thuillier, E Cambau, L Raskine, S Chevret, R Flicoteaux
We evaluated the use of the Cumulative Summation (CUSUM) control chart methodology for detection of an excessive increase in antimicrobial-resistant (AMR) bacteria acquisition. We used administrative, clinical and bacteriological data from all 157,570 patients hospitalized for at least 48 h from January 1, 2010 to December 31, 2015 in a 654-bed university teaching hospital in Paris, France. Monthly computed CUSUM were evaluated for the detection of out-of-control situations, defined as incidence rates of acquired AMR bacterial colonization exceeding acceptable thresholds at the hospital and ward levels (based on six selected wards) for AMR bacteria overall and Extended-spectrum beta-lactamases Enterobacteriaceae (ESBL-E) and Methicillin-resistant Staphylococcus aureus (MRSA), specifically...
March 17, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28314728/competitive-exclusion-reduces-transmission-and-excretion-of-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-in-broilers
#5
Daniela Ceccarelli, Alieda van Essen-Zandbergen, Bregtje Smid, Kees T Veldman, Gert Jan Boender, Egil A J Fischer, Dik J Mevius, Jeanet A van der Goot
Extended-spectrum β-lactamases (ESBLs) and plasmid mediated AmpC β-lactamases (pAmpC) are enzymes able to hydrolyze a large variety of β-lactam antibiotics, including 3(rd) generation cephalosporins and monobactams. Broilers and broiler meat products can be highly contaminated with ESBL and pAmpC-producing Escherichia coli, also known as extended-spectrum cephalosporins (ESC)-resistant E. coli, and can be a source for human infections. As few data are available on interventions to reduce ESC-resistant E...
March 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28291103/emergence-of-extended-spectrum-beta-lactamase-producing-enterobacteriaceae-colonization-what-termites-can-teach-us-about-the-gut-microbiota
#6
Daniel A Sweeney, Andre C Kalil
No abstract text is available yet for this article.
April 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28288838/routine-ertapenem-prophylaxis-for-transrectal-ultrasound-guided-prostate-biopsy-does-not-select-for-carbapenem-resistant-organisms-a-prospective-cohort-study
#7
Maxim G Bloomfield, Matthew J Page, Alice G McLachlan, Rodney C Studd, Timothy K Blackmore
PURPOSE: Post-transrectal ultrasound-guided prostate biopsy sepsis is an increasing problem in this era of rising antibiotic resistance. Ertapenem prophylaxis has proven very effective at our institution for reducing this, however has raised local and regional antimicrobial stewardship concerns. This study investigated the possible selective effect of single dose ertapenem prophylaxis on fecal colonization with carbapenem-resistant Enterobacteriaceae. MATERIALS AND METHODS: Patients had a rectal swab taken prior to receiving pre-biopsy ertapenem prophylaxis...
March 10, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28281425/antibiotic-resistance-patterns-and-beta-lactamase-identification-in-escherichia-coli-isolated-from-young-children-in-rural-limpopo-province-south-africa-the-mal-ed-cohort
#8
A S DeFrancesco, N F Tanih, A Samie, R L Guerrant, P O Bessong
BACKGROUND: Antibiotic resistance is a growing problem worldwide. Mechanisms of resistance vary, and some can confer resistance to multiple classes of antibiotics. OBJECTIVE: To characterise the antibiotic resistance profiles of Escherichia coli isolates obtained from stool samples of young rural children exposed or unexposed to antibiotics. METHODOLOGY: The samples were collected from children aged 4 - 12 months who were participants in the Etiology, Risk Factors, and Interactions of Enteric Infections and Malnutrition and the Consequences for Child Health and Development (MAL-ED) project at the South Africa research site...
February 27, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28276133/plasmid-mediated-resistance-to-cephalosporins-and-quinolones-in-escherichia-coli-from-american-crows-in-the-usa
#9
Ivana Jamborova, Monika Dolejska, Ludek Zurek, Andrea K Townsend, Anne B Clark, Julie C Ellis, Ivo Papousek, Alois Cizek, Ivan Literak
American crow (Corvus brachyrhynchos) feces were tested for Escherichia coli with plasmid-mediated quinolone resistance (PMQR), extended-spectrum beta-lactamases (ESBL) and AmpC beta-lactamases. A total of 590 fecal samples were collected at four roosting sites in the USA and cultivated on selective media. Pulsed-field gel electrophoresis (PFGE) and multi-locus sequence typing (MLST) were performed to assess clonality. Transferability of resistance genes was studied using conjugation and transformation bioassays...
March 9, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28273621/air-exposure-as-a-possible-route-for-esbl-in-pig-farmers
#10
Wietske Dohmen, Heike Schmitt, Marc Bonten, Dick Heederik
Livestock can carry extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae, with blaCTX-M-1 being most prevalent. ESBL carriage in farmers is associated with ESBL carriage in animals, with direct animal-human contact considered as the dominant route of transmission. However, inhalation of stable air might represent another route of transmission. We, therefore, quantified presence of blaCTX-M group 1 genes (CTX-M-gr1) in dust and the association with CTX-M-gr1 carriage in pig farmers, family members and employees...
March 4, 2017: Environmental Research
https://www.readbyqxmd.com/read/28270849/prevalence-of-extended-spectrum-beta-lactamases-producing-microorganisms-in-patients-admitted-at-krrh-southwestern-uganda
#11
Baguma Andrew, Atek Kagirita, Joel Bazira
The emergence of extended-spectrum beta-lactamase- (ESBL-) producing pathogenic bacteria at Kabale Regional Referral Hospital (KRRH), located in southwestern Uganda, is of great concern: a phenomenon that worries clinicians and other healthcare workers due to the serious threat they pose to patients. This current study aimed at determining the phenotypic detection of ESBL-producing strains of E. coli, Klebsiella sp., and Proteus sp. isolated from clinical specimens and their prevalence in patients admitted at KRRH...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28264656/antimicrobial-susceptibilities-of-aerobic-and-facultative-gram-negative-bacilli-isolated-from-chinese-patients-with-urinary-tract-infections-between-2010-and-2014
#12
Qiwen Yang, Hui Zhang, Yao Wang, Zhipeng Xu, Ge Zhang, Xinxin Chen, Yingchun Xu, Bin Cao, Haishen Kong, Yuxing Ni, Yunsong Yu, Ziyong Sun, Bijie Hu, Wenxiang Huang, Yong Wang, Anhua Wu, Xianju Feng, Kang Liao, Yanping Luo, Zhidong Hu, Yunzhuo Chu, Juan Lu, Jianrong Su, Bingdong Gui, Qiong Duan, Shufang Zhang, Haifeng Shao, Robert E Badal
BACKGROUND: The objective of this study was to investigate the distribution and susceptibility of aerobic and facultative Gram-negative bacilli isolated from Chinese patients with UTIs collected within 48 h (community acquired, CA) or after 48 h (hospital acquired, HA) of hospital admission. METHODS: From 2010 to 2014, the minimum inhibitory concentrations (MICs) of 12 antibiotics for 4,332 aerobic and facultative Gram-negative bacilli, sampled in 21 hospitals in 16 cities, were determined by the broth microdilution method...
March 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28261951/susceptibility-to-disinfectants-in-antimicrobial-resistant-and-susceptible-isolates-of-escherichia-coli-enterococcus-faecalis-and-enterococcus-faecium-from-poultry-esbl-ampc-phenotype-of-escherichia-coli-is-not-associated-with-resistance-to-a-quaternary-ammonium
#13
Nadine Wieland, Julia Boss, Sarah Lettmann, Barbara Fritz, Karin Schwaiger, Johann Bauer, Christina S Hölzel
AIMS: The spread of bacteria that are simultaneously resistant to disinfectants and antimicrobials would constitute an unsettling scenario. In order to explore an association between antimicrobial resistance and reduced susceptibility to biocides / microbicides like disinfectants in agriculture, we investigated Escherichia (E.) coli (n = 438) and enterococci (n = 120) isolated from six different flocks of the same poultry farm with known history of antimicrobial treatment. METHODS AND RESULTS: Susceptibility to disinfectants (formic acid and a quaternary ammonium compound, didecyldimethlyammoniumchloride - DDAC) was assessed by macrodilution (German Veterinary Society)...
March 6, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28258755/unexpected-common-occurrence-of-transferable-extended-spectrum-cephalosporinase-producing-escherichia-coli-in-swedish-surface-waters-used-for-drinking-water-supply
#14
Maria Egervärn, Stina Englund, Marianne Ljunge, Christer Wiberg, Maria Finn, Mats Lindblad, Stefan Börjesson
The presence of Enterobacteriaceae producing extended spectrum beta-lactamases (ESBL) or transferable AmpC beta-lactamases (pAmpC) is increasingly being reported in humans, food-producing animals and food world-wide. However, the occurrence and impact of these so-called extended spectrum cephalosporinase (ESC)-producing Enterobacteriaceae in aquatic environments are poorly documented. This study investigated the occurrence, concentrations and characteristics of ESC-producing E. coli (ESC-Ec) in samples of surface water collected at five Swedish water treatment plants that normally have relatively high prevalence and concentration of E...
February 28, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28258003/ctx-m-15-and-oxa-10-beta-lactamases-in-multi-drug-resistant-pseudomonas-aeruginosa-first-report-from-pakistan
#15
Waheed Ullah, Muhammad Qasim, Hazir Rahman, Saadullah Khan, Zia Ur Rehman, Nawab Ali, Noor Muhammad
BACKGROUND: Pseudomonas aeruginosa is an emerging threat to public health worldwide due to their rapid development of drug resistance including beta-lactamases. The present study was designed to investigate the incidence of β-lactamases and genotypic pattern of CTX and OXA in the clinical isolate of multidrug resistant P. aeruginosa. METHODS: In this study a total of 102 MDR P. aeruginosa isolates obtained from Lady Reading Hospital, Peshawar, Pakistan were subjected to extended spectrum beta lactamase (ESBL), metallo beta lactamase (MBL) and plasmid mediated β-lactamase (AmpC) detection using phenotypic and molecular methods...
February 28, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28255302/urinary-tract-infections-among-hiv-positive-pregnant-women-in-mwanza-city-tanzania-are-high-and-predicted-by-low-cd4-count
#16
Tito Chaula, Jeremiah Seni, Nhandi Ng'walida, Alphaxaid Kajura, Mariam M Mirambo, Rebekah DeVinney, Stephen E Mshana
Introduction. Urinary tract infection (UTI) among pregnant women can lead to adverse maternal and foetal outcomes. UTI has been widely studied in the general obstetric population in Tanzania; the present study evaluated the magnitude, antimicrobial resistance, and predictors of UTI among HIV-positive pregnant women. Methods. Between March and May 2016 midstream urine samples from 234 women attending prevention of mother to child transmission of HIV (PMTCT) clinics were analyzed using standard methods. Data was analyzed by STATA version 11...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28253356/resistance-to-antimicrobial-drugs-in-different-surface-waters-and-wastewaters-of-guadeloupe
#17
Stéphanie Guyomard-Rabenirina, Celia Dartron, Mélanie Falord, Syndia Sadikalay, Célia Ducat, Vincent Richard, Sébastien Breurec, Olivier Gros, Antoine Talarmin
OBJECTIVE: The first aim of this study was to evaluate the antimicrobial resistance of Enterobacteriaceae in different water environments of Guadeloupe and especially those impacted by waste water treatment plants (WWTP) effluents. The second objective was to characterize the genetic basis for antibiotic resistance of extended-spectrum beta-lactamase (ESBL) and AmpC beta-lactamase producing Enterobacteriaceae isolates (ESBLE and AmpCE). METHODS: We have collected 70 surface waters (river and sea samples) impacted or not by WWTP and 18 waste waters from 2 WWTPs in 2012 and 2013...
2017: PloS One
https://www.readbyqxmd.com/read/28249582/characteristics-of-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-isolated-from-fecal-samples-of-piglets-with-diarrhea-in-central-and-southern-taiwan-in-2015
#18
Wan-Chen Lee, Kuang-Sheng Yeh
BACKGROUND: The production of extended-spectrum β-lactamases (ESBLs) confer resistance to the commonly used beta-lactam antimicrobials and ESBL-producing bacteria render treatment difficulty in human and veterinary medicine. ESBL-producing bacteria have emerged in livestock in recent years, which may raise concerns regarding possible transfer of such bacteria through the food chain. The swine industry is important in Taiwan, but investigations regarding the status of ESBL in swine are limited...
March 1, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28249572/efficacy-and-safety-of-de-escalation-therapy-to-ertapenem-for-treatment-of-infections-caused-by-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae-an-open-label-randomized-controlled-trial
#19
Pinyo Rattanaumpawan, Peerawong Werarak, Anupop Jitmuang, Pattarachai Kiratisin, Visanu Thamlikitkul
BACKGROUND: Carbapenem antibiotics are considered the treatment of choice for serious extended-spectrum beta-lactamase (ESBL)-producing Gram-negative bacteria (GNB) infections. The study objectives were to evaluate efficacy and safety of de-escalation therapy to ertapenem for treatment of infections caused by extended-spectrum-β-lactamase-producing Enterobacteriaceae. METHODS: We conducted a randomized controlled trial of adult patients with documented ESBL-producing Enterobacteriaceae infections who had received any group 2 carbapenem for less than 96 h...
March 1, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28245252/very-high-prevalence-of-extended-spectrum-beta-lactamase-producing-enterobacteriaceae-in-bacteriemic-patients-hospitalized-in-teaching-hospitals-in-bamako-mali
#20
Samba Adama Sangare, Emilie Rondinaud, Naouale Maataoui, Almoustapha Issiaka Maiga, Ibrehima Guindo, Aminata Maiga, Namory Camara, Oumar Agaly Dicko, Sounkalo Dao, Souleymane Diallo, Flabou Bougoudogo, Antoine Andremont, Ibrahim Izetiegouma Maiga, Laurence Armand-Lefevre
The worldwide dissemination of extended-spectrum beta-lactamase producing Enterobacteriaceae, (ESBL-E) and their subset producing carbapenemases (CPE), is alarming. Limited data on the prevalence of such strains in infections from patients from Sub-Saharan Africa are currently available. We determined, here, the prevalence of ESBL-E/CPE in bacteriemic patients in two teaching hospitals from Bamako (Mali), which are at the top of the health care pyramid in the country. During one year, all Enterobacteriaceae isolated from bloodstream infections (E-BSI), were collected from patients hospitalized at the Point G University Teaching Hospital and the pediatric units of Gabriel Touré University Teaching Hospital...
2017: PloS One
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