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Enterobacteriacea

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https://www.readbyqxmd.com/read/28821942/rapid-detection-of-serratia-fonticola-by-taqman-quantitative-real-time-pcr-using-primers-targeting-the-gyrb-gene
#1
Jing Hua Ruan, Wu Jun Wang, Ti Yin Zhang, Quan Yang Bai, Teng Zheng, Zhi Deng Zhang, Li Yun Wu, Yi Fan Huang, Dao Jin Yu
A gyrB gene is present in the majority of bacterial species, and encodes the ATPase domain of DNA gyraseB-subunit protein, which is essential for transcription and replication of bacteria. The gyrB gene exhibits higher nucleotide sequence variability than the 16S rDNA gene and thus could be more reliable in differentiating Serratia fonticola. A species-specific primer pair and probe were designed for quantitative real-time PCR detection of S. fonticola using gyrB as the target gene. Nine members of the Serratia family (representing nine Serratia species) were chosen to verify the specificity of the primers...
August 18, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28820383/carbapenemase-producing-enterobacteriaceae-and-nonfermentative-bacteria-the-philippines-2013-2016
#2
John Mark Velasco, Maria Theresa Valderama, Trent Peacock, Nirdnoy Warawadee, Kathyleen Nogrado, Fatima Claire Navarro, Domingo Chua, Srijan Apichai, Ruekit Sirigade, Louis R Macareo, Brett Swierczewski
During 2013-2016, we isolated blaNDM- and blaVIM-harboring Enterobacteriaceae and nonfermentative bacteria from patients in the Philippines. Of 130 carbapenem-resistant isolates tested, 45 were Carba NP-positive; 43 harbored blaNDM, and 2 harbored blaVIM. Multidrug-resistant microbial pathogen surveillance and antimicrobial drug stewardship are needed to prevent further spread of New Delhi metallo-β-lactamase variants.
September 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28820112/prevalence-study-of-plasmid-mediated-ampc-%C3%AE-lactamases-in-enterobacteriaceae-lacking-inducible-ampc-from-saudi-hospitals
#3
Baha Abdalhamid, Samar Albunayan, Alaa Shaikh, Nasreldin Elhadi, Reem Aljindan
PURPOSE: Enterobacteriaceae encoding plasmid-mediated AmpC (pAmpC) β-lactamases confer resistance to the third generation cephalosporins. pAmpC association with extended spectrum β-lactamases (ESBLs), plasmid-mediated quinolone resistance (PMQR) and aminoglycoside modifying enzymes (AMEs) is well documented. There are limited data regarding the epidemiology and clinical significance of pAmpC in Saudi Arabia. This study aimed to determine the prevalence of pAmpC and its coexistence with ESBLs, PMQR and AMEs in Escherichia coli, Klebsiella pneumoniae and Proteus mirabilis isolates in Saudi hospitals from January to December 2015...
August 18, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28818544/trends-in-antimicrobial-resistance-in-bloodstream-infection-isolates-at-a-large-urban-hospital-in-malawi-1998-2016-a-surveillance-study
#4
Patrick Musicha, Jennifer E Cornick, Naor Bar-Zeev, Neil French, Clemens Masesa, Brigitte Denis, Neil Kennedy, Jane Mallewa, Melita A Gordon, Chisomo L Msefula, Robert S Heyderman, Dean B Everett, Nicholas A Feasey
BACKGROUND: Bacterial bloodstream infection is a common cause of morbidity and mortality in sub-Saharan Africa, yet few facilities are able to maintain long-term surveillance. The Malawi-Liverpool-Wellcome Trust Clinical Research Programme has done sentinel surveillance of bacteraemia since 1998. We report long-term trends in bloodstream infection and antimicrobial resistance from this surveillance. METHODS: In this surveillance study, we analysed blood cultures that were routinely taken from adult and paediatric patients with fever or suspicion of sepsis admitted to Queen Elizabeth Central Hospital, Blantyre, Malawi from 1998 to 2016...
August 14, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28815897/multidrug-resistant-enterobacteriaceae-pseudomonas-aeruginosa-and-vancomycin-resistant-enterococci-three-major-threats-to-hematopoietic-stem-cell-transplant-recipients
#5
REVIEW
Michael J Satlin, Thomas J Walsh
Hematopoietic stem cell transplant (HSCT) recipients are uniquely threatened by the emergence of multidrug-resistant (MDR) bacteria because these patients rely on immediate active antimicrobial therapy to combat bacterial infections. This review describes the epidemiology and treatment considerations for three challenging MDR bacterial pathogens in HSCT recipients: MDR Enterobacteriaceae, including extended-spectrum β-lactamase (ESBL)-producing and carbapenem-resistant Enterobacteriaceae (CRE), Pseudomonas aeruginosa, and vancomycin-resistant Enterococcus (VRE)...
August 16, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28815377/bacterial-community-structures-in-air-conditioners-installed-in-japanese-residential-buildings
#6
Kouta Hatayama, Yurika Oikawa, Hiroyuki Ito
The bacterial community structures in four Japanese split-type air conditioners were analyzed using a next-generation sequencer. A variety of bacteria were detected in the air filter of an air conditioner installed on the first floor. In the evaporator of this air conditioner, bacteria belonging to the genus Methylobacterium, or the family of Sphingomonadaceae, were predominantly detected. On the other hand, the majority of bacteria detected in the air filters and evaporators of air conditioners installed on the fifth and twelfth floors belonged to the family Enterobacteriaceae...
August 16, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28814888/frequency-of-colistin-and-fosfomycin-resistance-in-carbapenem-resistant-enterobacteriaceae-from-a-tertiary-care-hospital-in-karachi
#7
Salima Qamar, Najma Shaheen, Sadia Shakoor, Joveria Farooqi, Kauser Jabeen, Rumina Hasan
INTRODUCTION: Management of infections with carbapenem-resistant Enterobacteriaceae (CRE) is challenging. In recent times, agents such as colistin and fosfomycin have been used in combination with other antibiotics to treat such infections. In this study, we aim to seek frequency of colistin and fosfomycin resistance in CRE from Pakistan. METHODS: This study was conducted at clinical laboratories, Aga Khan University Hospital. In total, 251 CRE were included in the study...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28807067/iterative-fecal-microbiota-transplantations-for-eradicating-digestive-colonization-with-carbapenemase-producing-enterobacteriaceae-is-it-worth-it
#8
Rafael Mahieu, Viviane Cassisa, Diane Sanderink, Rachel Chenouard, Hélène Pailhoriès, Marie Kempf, Vincent Dubée, Matthieu Eveillard
No abstract text is available yet for this article.
August 15, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28805537/high-prevalence-of-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae-in-wild-fish-from-the-mediterranean-sea-in-algeria
#9
Soumia Brahmi, Abdelaziz Touati, Catherine Dunyach-Remy, Albert Sotto, Alix Pantel, Jean-Philippe Lavigne
AIM: We investigated the prevalence of extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae among wild fish from the coast of Bejaia (Algeria) in the Mediterranean Sea. RESULTS: From March 2012 to August 2013, gut and gill samples of wild fish were screened for the presence of ESBL-producing Enterobacteriaceae. Strains were characterized with regard to antibiotic resistance, β-lactamase content, plasmid-mediated quinolone resistance, aminoglycoside resistance genes, and clonality (repetitive sequence-based polymerase chain reaction profiles and multilocus sequence typing)...
August 14, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28803661/daily-bathing-strategies-and-cross-transmission-of-multidrug-resistant-organisms-impact-of-chlorhexidine-impregnated-wipes-in-a-multidrug-resistant-gram-negative-bacteria-endemic-intensive-care-unit
#10
Jesus Ruiz, Paula Ramirez, Esther Villarreal, Monica Gordon, Inmaculada Saez, Alfonso Rodríguez, María Jesús Castañeda, Álvaro Castellanos-Ortega
BACKGROUND: Health-care associated infections are a major cause of morbidity and mortality in critical care units. The aim of this study is to evaluate the effectiveness of chlorhexidine gluconate (CHG)-impregnated wipes in the daily bathing of patients in an intensive care unit (ICU) to prevent cross-transmission and colonization by multidrug-resistant organisms (MDROs) METHODS: Prospective cohort study with an intervention of 11 months. The intervention consisted of using CHG-impregnated wipes for the daily bathing of patients on mechanical ventilation or colonized by MDROs...
August 10, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28803446/urinary-tract-infections-due-to-esbl-producing-enterobacteriaceae-in-renal-transplant-recipients-a-systematic-review-and-meta-analysis
#11
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/28802266/functional-analysis-of-genes-encoded-by-the-locus-of-heat-resistance-lhr-in-escherichia-coli
#12
Ryan Mercer, Oanh Nguyen, Qixing Ou, Lynn McMullen, Michael G Gänzle
The locus of heat resistance (LHR) is a 15 - 19 kb genomic island conferring exceptional heat resistance to organisms in the family Enterobacteriaceae including pathogenic strains of Salmonella enterica and Escherichia coli The complement of LHR-encoded genes that is necessary for heat resistance and the stress- or growth-phase induced expression of LHR-encoded genes are unknown. This study determined the contribution of the 7 LHR-encoded genes yfdX1GI, yfdX2, hdeDGI, orf11, trxGI, kefB, and psiEGI by comparison of the heat resistance of E...
August 11, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28802232/the-activity-of-hou-po-da-huang-tang-is-improved-through-intestinal-bacterial-metabolism-and-hou-po-da-huang-tang-selectively-stimulate-the-growth-of-intestinal-bacteria-associated-with-health
#13
Xing-Yan Liu, Huai-You Wang, Xue-Qing Li, Juan-Juan Wu, Bo-Yang Yu, Ji-Hua Liu
Hou-Po-Da-Huang Tang (HPDHT) was used for the treatment of intestinal tract diseases in China. However, the underlying mechanisms via the intestinal bacteria remain largely unclear. Therefore, the aim of this study was to evaluate the metabolism of HPDHT by the human intestinal bacteria and its modulating effect on the intestinal bacteria. As a result, a total of 34 compounds were identified in HPDHT and transformed HPDHT (T-HPDHT). Among them, 12 metabolites were proved to be transformed by human intestinal bacteria...
August 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28801105/rectal-swab-screening-assays-of-public-health-importance-in-molecular-diagnostics-sample-adequacy-control
#14
Sanja Glisovic, Shaun Eintracht, Yves Longtin, Matthew Oughton, Ivan Brukner
Rectal swabs are routinely used by public health authorities to screen for multi-drug resistant enteric bacteria including vancomycin-resistant enterococci (VRE) and carbapenem-resistant enterobacteriaceae (CRE). Screening sensitivity can be influenced by the quality of the swabbing, whether performed by the patient (self-swabbing) or a healthcare practitioner. One common exclusion criterion for rectal swabs is absence of "visible soiling" from fecal matter. In our institution, this criterion excludes almost 10% of rectal swabs received in the microbiology laboratory...
August 8, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28799835/occurrence-of-carbapenemase-producing-enterobacteriaceae-isolates-in-the-wildlife-first-report-of-oxa-48-in-wild-boars-in-algeria
#15
Taous Bachiri, Sofiane Bakour, Rym Lalaoui, Nadia Belkebla, Meriem Allouache, Jean Marc Rolain, Abdelaziz Touati
The aim of the present study was to screen for the presence of carbapenemase-producing Enterobacteriaceae (CPE) isolates from wild boars and Barbary macaques in Algeria. Fecal samples were collected from wild boars (n = 168) and Barbary macaques (n = 212), in Bejaia, Algeria, between September 2014 and April 2016. The isolates were identified and antimicrobial susceptibility was determined. Carbapenem resistance determinants were studied using PCR and sequencing, while clonal relatedness was performed using multilocus sequence typing (MLST)...
August 11, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28799833/plasmid-mediated-colistin-resistance-gene-mcr-1-in-an-escherichia-coli-st10-bloodstream-isolate-in-the-sultanate-of-oman
#16
Jalila Mohsin, Tibor Pál, Jorgen Eskild Petersen, Dania Darwish, Akela Ghazawi, Tanveer Ashraf, Agnes Sonnevend
AIMS: To identify plasmid-mediated colistin resistance in clinical Enterobacteriaceae isolates in Oman, where this resistance mechanism has not been encountered yet. MATERIALS/METHODS: Twenty-two colistin-resistant Enterobacteriaceae clinical isolates collected between July 2014 and June 2016 in a tertiary care hospital in Muscat were screened by PCR for the mcr-1 and mcr-2 genes. The strain identified as mcr-1 positive was genotyped and its antibiotic susceptibility was established...
August 11, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28799667/coadministration-of-isomalto-oligosaccharides-augments-metabolic-health-benefits-of-cinnamaldehyde-in-high-fat-diet-fed-mice
#17
Dhirendra Pratap Singh, Pragyanshu Khare, Vandana Bijalwan, Ritesh Kumar Baboota, Jagdeep Singh, Kanthi Kiran Kondepudi, Kanwaljit Chopra, Mahendra Bishnoi
Bacteriostatic properties of a potential anti-obesity agent cinnamaldehyde (CMN) may present untoward effects on the resident gut microbiota. Here, we evaluated whether the combination of Isomalto-oligosaccharides (IMOs) with CMN prevents unwanted effects of CMN on gut microbiota and associated metabolic outcomes in HFD-fed mice. Male Swiss albino mice divided into four groups (n = 10), were fed on normal chow, or HFD (58% fat kcal), HFD + CMN (10 mg kg(-1) ) and HFD + CMN (10 mg kg(-1) ) + IMOs (1 g kg(-1) ) for 12 weeks...
August 11, 2017: BioFactors
https://www.readbyqxmd.com/read/28798125/microbiota-activated-ppar-%C3%AE-signaling-inhibits-dysbiotic-enterobacteriaceae-expansion
#18
Mariana X Byndloss, Erin E Olsan, Fabian Rivera-Chávez, Connor R Tiffany, Stephanie A Cevallos, Kristen L Lokken, Teresa P Torres, Austin J Byndloss, Franziska Faber, Yandong Gao, Yael Litvak, Christopher A Lopez, Gege Xu, Eleonora Napoli, Cecilia Giulivi, Renée M Tsolis, Alexander Revzin, Carlito B Lebrilla, Andreas J Bäumler
Perturbation of the gut-associated microbial community may underlie many human illnesses, but the mechanisms that maintain homeostasis are poorly understood. We found that the depletion of butyrate-producing microbes by antibiotic treatment reduced epithelial signaling through the intracellular butyrate sensor peroxisome proliferator-activated receptor γ (PPAR-γ). Nitrate levels increased in the colonic lumen because epithelial expression of Nos2, the gene encoding inducible nitric oxide synthase, was elevated in the absence of PPAR-γ signaling...
August 11, 2017: Science
https://www.readbyqxmd.com/read/28797573/digestive-decontamination-in-burn-patients-a-systematic-review-of-randomized-clinical-trials-and-observational-studies
#19
REVIEW
Mercedes Rubio-Regidor, Ana Martín-Pellicer, Luciano Silvestri, Hendrik K F van Saene, José A Lorente, Miguel A de la Cal
OBJECTIVE: The objective of this systematic review is to assess the effect of selective digestive decontamination (SDD) or non-absorbable enteral antibiotics (EA) on mortality, the incidence of infection and its adverse effects in burn patients. MATERIAL AND METHODS: Systematic review of randomized clinical trials (RCT) or observational studies enrolling burn patients, and comparing SDD or EA prophylaxis with placebo or no treatment. The search includes Pubmed/Medline, EMBASE, WOS, Cochrane Library (1970-2015)...
August 7, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28797330/evolving-beta-lactamase-epidemiology-in-enterobacteriaceae-from-italian-nationwide-surveillance-october-2013-kpc-carbapenemase-spreading-among-outpatients
#20
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
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