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Extended spectrum beta-lactamases

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https://www.readbyqxmd.com/read/28811343/comparative-genomics-of-escherichia-coli-isolated-from-skin-and-soft-tissue-and-other-extraintestinal-infections
#1
Amit Ranjan, Sabiha Shaik, Nishant Nandanwar, Arif Hussain, Sumeet K Tiwari, Torsten Semmler, Savita Jadhav, Lothar H Wieler, Munirul Alam, Rita R Colwell, Niyaz Ahmed
Escherichia coli, an intestinal Gram-negative bacterium, has been shown to be associated with a variety of diseases in addition to intestinal infections, such as urinary tract infections (UTIs), meningitis in neonates, septicemia, skin and soft tissue infections (SSTIs), and colisepticemia. Thus, for nonintestinal infections, it is categorized as extraintestinal pathogenic E. coli (ExPEC). It is also an opportunistic pathogen, causing cross infections, notably as an agent of zoonotic diseases. However, comparative genomic data providing functional and genetic coordinates for ExPEC strains associated with these different types of infections have not proven conclusive...
August 15, 2017: MBio
https://www.readbyqxmd.com/read/28803446/urinary-tract-infections-due-to-esbl-producing-enterobacteriaceae-in-renal-transplant-recipients-a-systematic-review-and-meta-analysis
#2
Michail Alevizakos, Dimitrios Nasioudis, Eleftherios Mylonakis
BACKGROUND: Urinary tract infections (UTIs) are the most common infectious complications among renal transplant recipients (RTR). UTIs caused by extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae (ESBL-PE) have been associated with inferior clinical outcomes and increased financial burden. METHODS: We performed a systematic review and meta-analysis by searching through the PubMed and EMBASE databases (to May 20, 2016) and identifying studies that reported data on the number of RTR who developed an ESBL-PE UTI...
August 13, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28801698/association-between-dementia-and-reduced-walking-ability-and-30-day-mortality-in-patients-with-extended-spectrum-beta-lactamase-producing-escherichia-coli-bacteremia
#3
G Chapelet, A S Boureau, A Dylis, G Herbreteau, S Corvec, E Batard, G Berrut, L de Decker
Previous studies have shown controversial results of factors associated with short-term mortality in patients with extended-spectrum beta-lactamase (ESBL)-producing E. coli bacteremia and no research has investigated the impact of the geriatric assessment criteria on short-term mortality. Our objective was to determine whether dementia and walking ability are associated with 30-day mortality in patients with ESBL-producing E. coli bacteremia. All blood bottle cultures, analyzed from January 2008 to April 2015, in the Bacteriology Department of a 2,600-bed, university-affiliated center, Nantes, France, were retrospectively extracted...
August 12, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28799218/synergy-and-mechanism-of-action-of-%C3%AE-mangostin-and-ceftazidime-against-ceftazidime-resistant-acinetobacter-baumannii
#4
T Pimchan, D Maensiri, G Eumkeb
To address the resistance of Acinetobacter baumannii to β-lactam antibiotics, combination therapy between different antibiotic classes is increasingly used. The antibacterial activity of α-mangostin (AMT) alone or in combination with ceftazidime (CTZ) was investigated against ceftazidime-resistant A. baumannii DMST 45378 (CRAB). Initial screening showed that A. baumannii strains possessed AmpC β-lactamase (AmpC), Extended-Spectrum Beta-Lactamase (ESBL) and metallo-β-lactamases (MBL). Minimum inhibitory concentrations (MICs) of >800 μg ml(-1) against individual antibiotics...
August 11, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28798879/prostatic-abscess-after-stapled-hemorrhoidopexy-caused-by-esbl-extended-spectrum-beta-lactamase-producing-klebsiella-pneumoniae-an-additional-challenge-to-postoperative-sepsis
#5
Asem Saleh, Abdelnasir Kibeida, Elsaid Amin, Abdalla Khalil, Rafat Abu Shakra, Mohamed Elwakil
Postoperative septic complications of hemorrhoids surgical interventions are rare, but very serious with high mortality rate. Early diagnosis and prompt therapy are essential to save patient's life. There are a good number of articles and case reports about these septic complications. We are presenting a case report of a prostatic abscess caused by extended spectrum beta lactamase (ESBL) producing Klebsiella pneumoniae after hemorrhoidopexy. Our patient was a healthy middle aged Saudi male who has no significant medical history apart from morbid obesity and recurrent urinary tract infections...
2017: Case Reports in Surgery
https://www.readbyqxmd.com/read/28797330/evolving-beta-lactamase-epidemiology-in-enterobacteriaceae-from-italian-nationwide-surveillance-october-2013-kpc-carbapenemase-spreading-among-outpatients
#6
Tommaso Giani, Alberto Antonelli, Mariasofia Caltagirone, Carola Mauri, Jessica Nicchi, Fabio Arena, Elisabetta Nucleo, Silvia Bracco, Annalisa Pantosti, Francesco Luzzaro, Laura Pagani, Gian Maria Rossolini
Extended-spectrum beta-lactamases (ESBLs), AmpC-type beta-lactamases (ACBLs) and carbapenemases are among the most important resistance mechanisms in Enterobacteriaceae. This study investigated the presence of these resistance mechanisms in consecutive non-replicate isolates of Escherichia coli (n = 2,352), Klebsiella pneumoniae (n = 697), and Proteus mirabilis (n = 275) from an Italian nationwide cross-sectional survey carried out in October 2013. Overall, 15.3% of isolates were non-susceptible to extended-spectrum cephalosporins but susceptible to carbapenems (ESCR-carbaS), while 4...
August 3, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28797328/co-occurrence-of-colistin-resistance-genes-mcr-1-and-mcr-3-among-multidrug-resistant-escherichia-coli-isolated-from-cattle-spain-september-2015
#7
Marta Hernández, M Rocío Iglesias, David Rodríguez-Lázaro, Alejandro Gallardo, Narciso Quijada, Pedro Miguela-Villoldo, Maria Jorge Campos, Segundo Píriz, Gema López-Orozco, Cristina de Frutos, José Luis Sáez, María Ugarte-Ruiz, Lucas Domínguez, Alberto Quesada
Colistin resistance genes mcr-3 and mcr-1 have been detected in an Escherichia coli isolate from cattle faeces in a Spanish slaughterhouse in 2015. The sequences of both genes hybridised to same plasmid band of ca 250 kb, although colistin resistance was non-mobilisable. The isolate was producing extended-spectrum beta-lactamases and belonged to serotype O9:H10 and sequence type ST533. Here we report an mcr-3 gene detected in Europe following earlier reports from Asia and the United States.
August 3, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28782707/esbl-producing-enterobacteriaceae-colonization-in-long-term-care-facilities-ltcfs-a-systematic-review-and-meta-analysis
#8
REVIEW
Myrto Eleni Flokas, Michail Alevizakos, Fadi Shehadeh, Nikolaos Andreatos, Eleftherios Mylonakis
OBJECTIVES: To estimate the colonization rate by extended-spectrum beta-lactamase producing Enterobacteriaceae (ESBL-PE) among residents of Long Term Care facilities (LTCFs) and to identify pertinent risk factors. METHODS: A systematic search of PubMed and EMBASE databases for studies published up to May, 2016 that provided raw data for gastrointestinal colonization by ESBL-PE among LTCF residents. RESULTS: Twenty three studies reporting data on 9,775 screened subjects met our inclusion criteria...
August 3, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28781766/the-potential-role-of-microbiota-for-controlling-the-spread-of-extended-spectrum-beta-lactamase-producing-enterobacteriaceae-esbl-pe-in-neonatal-population
#9
REVIEW
Thibaud Delerue, Loic de Pontual, Etienne Carbonnelle, Jean-Ralph Zahar
The spread of extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBL-PE) in the hospital and also the community is worrisome. Neonates particularly are exposed to the risk of ESBL-PE acquisition and, owing to the immaturity of their immune system, to a higher secondary risk of ESBL-PE-related infection. Reducing the risk of acquisition in the hospital is usually based on a bundle of measures, including screening policies at admission, improving hand hygiene compliance, and decreasing antibiotic consumption...
2017: F1000Research
https://www.readbyqxmd.com/read/28776045/whole-genome-sequencing-of-human-clinical-klebsiella-pneumoniae-isolates-reveals-misidentification-and-misunderstandings-of-klebsiella-pneumoniae-klebsiella-variicola-and-klebsiella-quasipneumoniae
#10
S Wesley Long, Sarah E Linson, Matthew Ojeda Saavedra, Concepcion Cantu, James J Davis, Thomas Brettin, Randall J Olsen
Klebsiella pneumoniae is a major threat to public health, causing significant morbidity and mortality worldwide. The emergence of highly drug-resistant strains is particularly concerning. There has been a recognition and division of Klebsiella pneumoniae into three distinct phylogenetic groups: Klebsiella pneumoniae, Klebsiella variicola, and Klebsiella quasipneumoniae. K. variicola and K. quasipneumoniae have often been described as opportunistic pathogens that have less virulence in humans than K. pneumoniae does...
July 2017: MSphere
https://www.readbyqxmd.com/read/28762433/incidence-and-molecular-characterization-of-the-extended-spectrum-beta-lactamase-producing-escherichia-coli-isolated-from-urinary-tract-infections-in-eastern-saudi-arabia
#11
Fahad A Mashwal, Salah H El Safi, Siju K George, Ahmed A Adam, Arulanantham Z Jebakumar
To find the prevalence of uropathogenic Escherichia coli (E. coli)-producing extended spectrum beta lactamase (ESBL) at King Fahd Military Medical Complex in Dhahran (KFMMC) and to detect the genes responsible for its production. In addition, we determined the pattern of multi-drug resistance among isolates. Methods: A total of 117 uropathogenic E. coli isolates were collected from KFMMC over a period of 4 months from March 2014 to June 2014. These were received in the Microbiology Laboratory at Prince Sultan Military College of Health Sciences (PSMCHS), Dhahran, Saudi Arabia for analysis...
July 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28754148/nosocomial-bacterial-infections-and-their-antimicrobial-susceptibility-patterns-among-patients-in-ugandan-intensive-care-units-a-cross-sectional-study
#12
Peter Agaba, Janat Tumukunde, J V B Tindimwebwa, Arthur Kwizera
BACKGROUND: The intensive care unit (ICU) admits critically ill patients requiring advanced airway, respiratory, cardiac and renal support. Despite the highly-specialized interventions, the mortality and morbidity is still high due to a number of reasons including nosocomial infections, which are the most likely complications in hospitalized patients with the rates being highest among ICU patients. METHODS: In this cross-sectional study of 111 adult patients admitted to 2 of the ICUs in Uganda, we set out to describe the commonest bacterial infections, their antimicrobial susceptibility patterns and factors associated with development of a nosocomial infection...
July 28, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28750653/bacteraemic-urinary-tract-infections-in-a-tertiary-hospital-in-japan-the-epidemiology-of-community-acquired-infections-and-the-role-of-non-carbapenem-therapy
#13
Momoko Mawatari, Kayoko Hayakawa, Yoshihiro Fujiya, Kei Yamamoto, Satoshi Kutsuna, Nozomi Takeshita, Norio Ohmagari
OBJECTIVES: This study aimed to describe the epidemiology of bacteraemic urinary tract infections (UTIs), especially those that were community-acquired (i.e., with no discernible healthcare-associated exposure) and caused by extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBLPE). We also evaluated and compared empirical antimicrobial treatments [carbapenem (CBP) vs. non-carbapenem beta-lactam (non-CBPBL)] for bacteraemic UTIs. Finally, we reviewed the published literature on the effectiveness of non-CBP compared to CBP treatments for UTIs caused by extended-spectrum beta-lactamase-producing organisms...
July 27, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28749780/the-prevalence-of-extended-spectrum-beta-lactamase-producing-multidrug-resistant-escherichia-coli-in-poultry-chickens-and-variation-according-to-farming-practices-in-punjab-india
#14
Charles H Brower, Siddhartha Mandal, Shivdeep Hayer, Mandeep Sran, Asima Zehra, Sunny J Patel, Ravneet Kaur, Leena Chatterjee, Savita Mishra, B R Das, Parminder Singh, Randhir Singh, J P S Gill, Ramanan Laxminarayan
BACKGROUND: Agricultural use of antimicrobials in subtherapeutic concentrations is increasing in response to the rising demand for food animal products worldwide. In India, the use of antimicrobials in food animal production is unregulated. Research suggests that many clinically important antimicrobials are used indiscriminately. This is the largest study to date in India that surveys poultry production to test for antimicrobial resistance and the occurrence of extended-spectrum (ESBLs) modulated by farming and managerial practices...
July 20, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28743503/a-multi-centre-prospective-evaluation-of-the-check-direct-esbl-screen%C3%A2-for-bd-max%C3%A2-as-a-rapid-molecular-screening-method-for-extended-spectrum-beta-lactamase-producing-enterobacteriaceae-rectal-carriage
#15
Tobias Engel, Brenda J Slotboom, Noortje van Maarseveen, Anton A van Zwet, Marrigje Nabuurs, Ferry Hagen
OBJECTIVE: We prospectively compared a multiplex ESBL-Enterobacteriaceae (ESBL-E) qPCR, directly performed on rectal swabs, to a culture based protocol to study the discrepancies between both methods and identify existing challenges to apply this assay in routine clinical practice. Our secondary objective was to assess its performance. MATERIAL/METHODS: In two Dutch teaching hospitals 573 rectal swabs were prospectively collected. Culture with additional testing with the Check-MDR CT103XL (Check-Points) was compared to the Check-Direct ESBL Screen for BD MAX™ (Check-Points), which detects the presence of the ESBL-gene families CTX-M1, CTX-M2, CTX-M9 and SHV2/5-ESBL...
July 22, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28738906/next-generation-sequencing-to-monitor-the-spread-of-antimicrobial-resistance
#16
Michael Otto
Next-generation sequencing is increasingly being used to monitor current and historic events related to the emergence and spread of antimicrobial resistance. In a recent publication, researchers analyzed the rise of methicillin-resistant Staphylococcus aureus in the 1960s, emphasizing that adaptations conferring antibiotic resistance might pre-date the introduction of novel antibiotic derivatives. Other researchers have evaluated the role of transmission within a healthcare network, using the example of extended-spectrum beta-lactamase-resistant Escherichia coli...
July 25, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28738847/longitudinal-genomic-surveillance-of-multidrug-resistant-escherichia-coli-carriage-in-a-long-term-care-facility-in-the-united-kingdom
#17
Hayley J Brodrick, Kathy E Raven, Teemu Kallonen, Dorota Jamrozy, Beth Blane, Nicholas M Brown, Veronique Martin, M Estée Török, Julian Parkhill, Sharon J Peacock
BACKGROUND: Residents of long-term care facilities (LTCF) may have high carriage rates of multidrug-resistant pathogens, but are not currently included in surveillance programmes for antimicrobial resistance or healthcare-associated infections. Here, we describe the value derived from a longitudinal epidemiological and genomic surveillance study of drug-resistant Escherichia coli in a LTCF in the United Kingdom (UK). METHODS: Forty-five of 90 (50%) residents were recruited and followed for six months in 2014...
July 25, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28736021/infectious-complications-and-multidrug-resistant-bacteria-in-patients-with-hematopoietic-stem-cell-transplantation-in-the-first-12-months-after-transplant
#18
A César-Arce, P Volkow-Fernández, L M Valero-Saldaña, B Acosta-Maldonado, D Vilar-Compte, P Cornejo-Juárez
BACKGROUND: Hematopoietic stem cell transplantation (HSCT) has been used as treatment in different hematologic and solid malignancies. The aim of this study was to describe the frequency of infectious complications, microbiology, and outcome in patients undergoing HSCT in Mexico during the pre-engraftment period and the impact on mortality rates at 12 months. METHODS: We conducted a retrospective study of all hematologic malignancies that received HSCT from January 2009 and December 2014, at an oncology reference center...
July 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28734630/management-of-an-acinetobacter-baumannii-outbreak-in-an-intensive-care-unit
#19
M Tanguy, A Kouatchet, B Tanguy, É Pichard, S Fanello, M-L Joly-Guillou
INTRODUCTION: Acinetobacter baumannii is a ubiquitous pathogen resistant to desiccation and responsible for healthcare-associated infections (HAI), especially in intensive care units (ICU) where it is responsible for 5-10% of HAIs. An A. baumannii outbreak occurred in the ICU of the University Hospital of Angers, France. OBJECTIVES: To describe the A. baumannii outbreak and to evaluate the control measures taken. The secondary objective was to evaluate the impact of the electronic alert system on the incidence of multidrug resistance to antibiotics...
July 19, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28733213/risk-factors-for-the-infection-and-or-colonization-of-extended-spectrum-beta-lactamase-producing-bacteria-in-a-neonatal-intensive-care-unit-a-meta-analysis
#20
REVIEW
Xuan Li, Xuan Xu, Xianxian Yang, Mei Luo, Pin Liu, Kewen Su, Ying Qing, Shuai Chen, Jingfu Qiu, Yingli Li
BACKGROUND: Extended-spectrum beta-lactamase (ESBL)-producing bacteria are the important causes of healthcare associated infection in the neonatal intensive care unit (NICU). This study performed a meta-analysis to identify the risk factors associated with infection and/or colonization of ESBL-producing bacteria in the NICU. METHODS: Relevant studies in the literature published from January 1, 2000 to July 1, 2016 were searched in the electronic databases. The literature was screened and data were extracted according to the inclusion and exclusion criteria...
July 18, 2017: International Journal of Antimicrobial Agents
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