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Enterobacteriaceae

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https://www.readbyqxmd.com/read/28941394/ceftolozane-tazobactam-activity-against-drug-resistant-enterobacteriaceae-and-pseudomonas-aeruginosa-causing-healthcare-associated-infections-in-latin-america-report-from-an-antimicrobial-surveillance-program-2013-2015
#1
Michael A Pfaller, Dee Shortridge, Helio S Sader, Ana Gales, Mariana Castanheira, Robert K Flamm
This study evaluated the in vitro activity of ceftolozane-tazobactam and comparator agents tested against Latin American isolates of Enterobacteriaceae and Pseudomonas aeruginosa from patients with healthcare-associated infection (HAI). Ceftolozane-tazobactam is an antipseudomonal cephalosporin combined with a well-established β-lactamase inhibitor. A total of 2415 Gram-negative organisms (537 P. aeruginosa and 1878 Enterobacteriaceae) were consecutively collected in 12 medical centers located in four Latin American countries...
September 20, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28935873/whole-genome-sequencing-molecular-typing-and-in-vivo-virulence-of-oxa-48-producing-escherichia-coli-isolates-including-st131-h30-rx-h22-and-h41-subclones
#2
María de Toro, Javier Fernández, Vanesa García, Azucena Mora, Jorge Blanco, Fernando de la Cruz, M Rosario Rodicio
Carbapenem-resistant Enterobacteriaceae, including the increasingly reported OXA-48 Escherichia coli producers, are an emerging public health threat worldwide. Due to their alarming detection in our healthcare setting and their possible presence in the community, seven OXA-48-producing, extraintestinal pathogenic E. coli were analysed by whole genome sequencing as well as conventional tools, and tested for in vivo virulence. As a result, five E. coli OXA-48-producing subclones were detected (O25:H4-ST131/PST43-fimH30-virotype E; O25:H4-ST131/PST9-fimH22-virotype D5, O16:H5-ST131/PST506-fimH41; O25:H5-ST83/PST207 and O9:H25-ST58/PST24)...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935288/the-potential-role-of-gut-microbiota-in-pancreatic-disease-a-systematic-review
#3
REVIEW
Robert Memba, Sinead N Duggan, Hazel M Ni Chonchubhair, Oonagh M Griffin, Yasir Bashir, Donal B O'Connor, Anne Murphy, Jean McMahon, Yuri Volcov, Barbara M Ryan, Kevin C Conlon
BACKGROUND: Several studies have suggested a link between microbiota imbalance and some gastrointestinal, inflammatory and neoplastic diseases. However, the role in pancreatic diseases remain unclear. To evaluate the available evidence for pancreatic diseases, we undertook a systematic review. METHODS: OVID Medline (1946-2017), EMBASE (1980-2017) and the Cochrane Central Register of Controlled Trials (CENTRAL Issue 3, 2017) were searched for studies on microbiota in pancreatic disease...
September 6, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28934589/low-dietary-protein-and-high-carbohydrate-infant-formula-affects-the-microbial-ecology-of-the-large-intestine-in-neonatal-rats
#4
Wenguang Fan, Haiwei Ren, Yingying Cao, Yonggang Wang, Guicheng Huo
The aim of this study was to investigate the effects of a low dietary protein and high carbohydrate infant formula on the large intestine of neonatal rats. A total of 24 neonatal SD rats (14d old) were randomly assigned to the low-protein, high-carbohydrate infant formula-fed group (IF group) and a human breast milk-fed group (HF group). After 7 days, we selected 6 rats at random from each group to study. No significantly different microbial colonization patterns were observed in the two groups at the phylum level...
September 21, 2017: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/28934262/effects-of-eimeria-tenella-infection-on-chicken-caecal-microbiome-diversity-exploring-variation-associated-with-severity-of-pathology
#5
Sarah E Macdonald, Matthew J Nolan, Kimberley Harman, Kay Boulton, David A Hume, Fiona M Tomley, Richard A Stabler, Damer P Blake
Eimeria species cause the intestinal disease coccidiosis, most notably in poultry. While the direct impact of coccidiosis on animal health and welfare is clear, its influence on the enteric microbiota and by-stander effects on chicken health and production remains largely unknown, with the possible exception of Clostridium perfringens (necrotic enteritis). This study evaluated the composition and structure of the caecal microbiome in the presence or absence of a defined Eimeria tenella challenge infection in Cobb500 broiler chickens using 16S rRNA amplicon sequencing...
2017: PloS One
https://www.readbyqxmd.com/read/28932932/eliminating-duodenoscope-associated-transmission-of-carbapenem-resistant-enterobacteriaceae-cre-in-search-of-an-optimal-strategy
#6
EDITORIAL
Divyanshoo R Kohli, Thomas E Grys, Rahul Pannala
No abstract text is available yet for this article.
September 20, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28932812/comparison-of-the-microbiota-of-older-adults-living-in-nursing-homes-and-the-community
#7
Mary-Claire Roghmann, Alison D Lydecker, Lauren Hittle, Robert T DeBoy, Rebecca G Nowak, J Kristie Johnson, Emmanuel F Mongodin
Our objective for this study was to characterize the microbial communities of the anterior nares (nose), posterior pharynx (throat), and skin of the femoral and subclavian areas in older adults from nursing homes and the community. Older adults (≥65 years) without antibiotic use for the past 3 months were recruited from nursing homes (NH; n = 16) and from the community (CB; n = 51). Specimens were taken from nose, throat, and skin sites for culture and bacterial profiling using 16S rRNA gene sequencing...
September 2017: MSphere
https://www.readbyqxmd.com/read/28931562/a-triple-disk-enrichment-method-for-cre-screening
#8
Lauren A Darling, Ann M Evans, Kathleen A Stellrecht, Seela M Nattanmai, Clemente I Montero
The global emergence of carbapenem resistant Enterobacteriaceae (CRE) is a major concern for public health.….
September 20, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28929967/-results-of-a-multicenter-study-investigating-plasmid-mediated-colistin-resistance-genes-mcr-1-and-mcr-2-in-clinical-enterobacteriaceae-%C3%A4-solates-from-turkey
#9
Ayşe Nur Sarı, Serap Süzük, Onur Karatuna, Dilara Öğünç, Ayşe Esra Karakoç, Zeynep Çizmeci, Hikmet Eda Alışkan, Füsun Cömert, Mustafa Zahir Bakıcı, Nezahat Akpolat, Fatma Feriha Çilli, Yasemin Zer, Aysel Karataş, Bahar Akgün Karapınar, Gülçin Bayramoğlu, Melda Özdamar, Fatma Kalem, Nuran Delialioğlu, Elif Aktaş, Nisel Yılmaz, Şaban Gürcan, Zeynep Gülay
Colistin is a polymyxin antibiotic which is considered as one of the last line agents against infections due to multidrug resistant or carbapenem resistant gram-negative pathogens. Colistin resistance is associated with chromosomal alterations which can usually cause mutations in genes coding specific two component regulator systems. The first plasmid-mediated colistin resistance gene, mcr-1 was described in Escherichia coli and Klebsiella pneumoniae isolates in December 2015 and followed by another plasmid-mediated colistin resistance gene mcr-2 in 2016...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28929963/-comparison-of-phenotypic-methods-and-polymerase-chain-reaction-for-the-detection-of-carbapenemase-production-in-clinical-klebsiella-pneumoniae-isolates
#10
Yamaç Tekintaş, Feriha Çilli, Bayrı Eraç, Melike Yaşar, Sabire Şöhret Aydemir, Mine Hoşgör Limoncu
Being a member of the Enterobacteriaceae family, Klebsiella pneumoniae is an opportunistic pathogen that inhabits normal human microbiota and causes predominantly hospital-acquired infections. The emergence of K.pneumoniae isolates which are resistant particularly to the carbapenem group of antibiotics has led to an increase in hospitalization period, mortality and morbidity. Although different rates of resistance are observed between countries, regions and even healthcare facilities, there has been a rapid increase in the prevalence of carbapenem-resistant strains in the last 10 years...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28929047/determining-frequency-of-genes-of-ctx-m-and-ctx-m-15-of-producing-enterobacteriaceae-of-isolated-extended-spectrum-beta-lactamases-from-clinical-samples-of-patients-referred-to-training-hospitals-of-medical-sciences-university-khorramabad-iran
#11
Seyed Mojtaba Mosavian, Azam Rezvani-Rad
OBJECTIVE: The purpose of conducting this research was evaluation of the frequency of extended-spectrum beta-lactamases (ESBLs) in separated Enterobacteriaceae isolates from clinical samples in Khorramabad city and determination of their antimicrobial resistance pattern. MATERIALS AND METHODS: In this study, 240 isolates belonging to Enterobacteriaceae family were collected in time duration between March and June in 2014. The isolates were identified by standard biochemical tests...
April 2017: International Journal of Pharmaceutical Investigation
https://www.readbyqxmd.com/read/28927475/impact-of-discontinuing-contact-precautions-for-mrsa-and-esble-in-an-intensive-care-unit-a-prospective-noninferiority-before-and-after-study
#12
Laurie Renaudin, Mathieu Llorens, Christophe Goetz, Sébastien Gette, Vincente Citro, Sylvia Poulain, Marie-Laure Vanson, Jocelyne Sellies
OBJECTIVE To compare incidence densities of methicillin-resistant Staphylococcus aureus (MRSA) or extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBLE) acquisition in the intensive care unit (ICU) before and after discontinuation of contact precautions (CP) and application of standard precautions (SP). DESIGN Prospective noninferiority before-and-after study comparing 2 periods: January 1, 2012, to January 31, 2014 (the CP period) and February 1, 2014, to February 29, 2016 (the SP period). SETTING A 16-bed polyvalent ICU in France with only single-bed rooms with dedicated equipment and reusable medical devices...
September 20, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28923621/extended-spectrum-beta-lactamase-producing-enterobacteriaceae-related-urinary-tract-infection-in-kidney-transplant-recipients-risk-factors-treatment-and-long-term-outcome
#13
S Brakemeier, S I Taxeidi, B Zukunft, D Schmidt, J Gaedeke, M Dürr, S Hansen, K Budde
BACKGROUND: Prevalence of extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBL-E) has risen in kidney transplant (KT) patients, with no long-term data so far on graft function or survival. METHODS: KT patients with ESBL-E-positive urine culture were retrospectively analyzed regarding initial adequate antimicrobial therapy, recurrent infection, transplant function, and survival compared with an ESBL-E-negative KT control cohort. RESULTS: ESBL-E-positive KT patients (n = 93) were older (55...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28921627/preterm-infants-with-necrotising-enterocolitis-demonstrate-individual-and-unbalanced-gut-microbiota
#14
Itani Tarek, Ayoub Moubareck Carole, Melki Imad, Rousseau Clotilde, Mangin Irène, Butel Marie-José, Karam Sarkis Dolla
AIM: This Lebanese study tested the hypothesis that differences would exist in the gut microbiota of preterm infants with and without necrotising enterocolitis (NEC), as reported in western countries. METHODS: This study compared 11 infants with NEC and 11 controls, all born at 27-35 weeks, in three neonatal intensive care units between January 2013 and March 2015. Faecal samples were collected at key time points and microbiota was analysed by culture, quantitative PCR (qPCR), and temperature temporal gel electrophoresis (TTGE)...
September 16, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28920846/detection-of-the-incx3-plasmid-carrying-blakpc-3-in-a-serratia-marcescens-strain-isolated-from-a-kidney-liver-transplanted-patient
#15
Floriana Gona, Carla Caio, Gioacchino Iannolo, Francesco Monaco, Giuseppina Di Mento, Nicola Cuscino, Ignazio Fontana, Giovanna Panarello, Gaetano Maugeri, Maria Lina Mezzatesta, Stefania Stefani, Pier Giulio Conaldi
Dissemination of resistance to carbapenems among Enterobacteriaceae through plasmids is an increasingly important concern in health care worldwide. Here we report the first description of an IncX3 plasmid carrying the blaKPC-3 gene in a strain of Serratia marcescens isolated from a kidney-liver transplanted patient at the transplantation centre ISMETT (Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Italy). To localize the transposable element containing the resistance-associated gene Next-Generation Sequencing of the bacterial DNA was performed...
September 18, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28919348/prevalence-of-colistin-resistance-in-clinical-isolates-of-enterobacteriaceae-a-four-year-cross-sectional-study
#16
Núria Prim, Miquel Turbau, Alba Rivera, Judith Rodríguez-Navarro, Pere Coll, Beatriz Mirelis
OBJECTIVES: The objectives were to determine the prevalence of colistin resistance in clinical isolates of Enterobacteriaceae, and to gain knowledge on the epidemiological and clinical features of the patients. METHODS: All colistin-resistant Enterobacteriaceae consecutively isolated from clinical samples in our institution from 2012 to 2015, were included in this cross-sectional study. Intrinsic-resistant species were excluded. Minimum inhibitory concentration was performed by gradient diffusion...
September 14, 2017: Journal of Infection
https://www.readbyqxmd.com/read/28918832/streptococcus-anginosus-group-bacterial-infections
#17
Tasaduq Fazili, Scott Riddell, Deanna Kiska, Tim Endy, Luca Giurgea, Calden Sharngoe, Waleed Javaid
BACKGROUND: The Streptococcus anginosus group (SAG) causes a variety of infections in adults. To better understand the burden of SAG infections and their associated morbidity and mortality, we conducted a retrospective analysis of these infections in adults at a tertiary care center. METHODS: A retrospective review of all cultures positive for SAG in adults and a corresponding review of the patients' medical records were conducted at a tertiary care facility in central New York...
September 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28918634/engineered-probiotic-for-the-inhibition-of-salmonella-via-tetrathionate-induced-production-of-microcin-h47
#18
Jacob D Palmer, Emma Piattelli, Beth A McCormick, Mark W Silby, Christopher J Brigham, Vanni Bucci
Complications arising from antibiotic-resistant bacteria are becoming one of the key issues in modern medicine. Members of drug-resistant Enterobacteriaceae spp. include opportunistic pathogens (e.g., Salmonella spp.) that are among the leading causes of morbidity and mortality worldwide. Overgrowth of these bacteria is considered a hallmark of intestinal dysbiosis. Microcins (small antimicrobial peptides) produced by some gut commensals can potentially cure these conditions by inhibiting these pathogens and have been proposed as a viable alternative to antibiotic treatment...
September 20, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/28918585/prevalence-and-risk-factors-for-intestinal-carriage-of-ctx-m-type-esbls-in-enterobacteriaceae-from-a-thai-community
#19
P R Niumsup, U Tansawai, A Na-Udom, D Jantapalaboon, K Assawatheptawee, A Kiddee, T Romgaew, S Lamlertthon, T R Walsh
The incidence of infections caused by antimicrobial-resistant Enterobacteriaceae in Thailand is increasing and human intestinal flora is an important reservoir for these organisms. This study was carried out to determine the intestinal carriage of bla CTX-M extended spectrum ß-lactamase-positive Enterobacteriaceae (ESBL + E) and AmpC-positive Enterobacteriaceae in a community setting in Northern Thailand, and to identify potential risk factors for carriage. A total of 307 fecal samples were collected from healthy volunteers in Phitsanulok province, and cefotaxime-resistant Enterobacteriaceae (CtxRE) were isolated using selective media...
September 16, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28918351/susceptibility-profiles-of-bacteria-causing-urinary-tract-infection-in-southern-tunisia
#20
Sonda Guermazi-Toumi, Sirine Boujlel, Mouna Assoudi, Riadh Issaoui, Sonia Tlili, Mohamed Ennaceur Hlaiem
OBJECTIVES: The aim of this study was to determine the epidemiological profile and the antibiotic resistance of bacteria responsible for urinary infections diagnosed in the department of microbiology of the regional hospital Houcine Bouzaiene (Gafsa) in the south west of Tunisia. METHODS: All the cytobacteriological urine samples analyzed from 1 January 2015 to 30 June 2016 were included in the study. The adopted criteria to define urinary infection were: leukocyturia >10(4)/ml and bacteriuria >10(5)CFU/ml...
September 13, 2017: Journal of Global Antimicrobial Resistance
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