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https://www.readbyqxmd.com/read/29789433/retraction-for-hunter-et-al-lactobacillus-bulgaricus-prevents-intestinal-epithelial-cell-injury-caused-by-enterobacter-sakazakii-induced-nitric-oxide-both-in-vitro-and-in-the-newborn-rat-model-of-necrotizing-enterocolitis
#1
Catherine J Hunter, Monica Williams, Mikael Petrosyan, Yigit Guner, Rahul Mittal, Dennis Mock, Jeffrey S Upperman, Henri R Ford, Nemani V Prasadarao
No abstract text is available yet for this article.
June 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29785628/gut-associated-bacteria-of-helicoverpa-zea-indirectly-trigger-plant-defenses-in-maize
#2
Jie Wang, Mingyu Yang, Yuanyuan Song, Flor E Acevedo, Kelli Hoover, Rensen Zeng, Gary W Felton
Insect-associated microbes can contribute to the physiological and ecological functions of insects. Despite a few examples in beetles and piercing-sucking insects, the varied mechanisms of how insect-associated bacteria mediate plant-insect interactions are still not fully understood. The polyphagous herbivore Helicoverpa zea is a major agricultural pest that harbors certain microbes in their digestive systems. Enterobacter ludwigii is one of the gut-associated bacteria identified from field-collected caterpillars, and it has been shown to indirectly induce defenses in the dicot plant tomato by triggering the biosynthesis of salivary elicitors, but there are no clear mechanisms to show how gut microbes alter these salivary cues and how a different host plant responds to these inducible elicitors...
May 22, 2018: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/29783685/novel-imidazole-aldoximes-with-broad-spectrum-antimicrobial-potency-against-multidrug-resistant-gram-negative-bacteria
#3
Mirjana Skočibušić, Renata Odžak, Alma Ramić, Tomislav Smolić, Tomica Hrenar, Ines Primožič
In the search for a new class of potential antimicrobial agents, five novel N -substituted imidazole 2-aldoximes and their six quaternary salts were evaluated. The antimicrobial activity was assessed against a panel of representative Gram-positive and Gram-negative bacteria, including multidrug resistant bacteria. All compounds demonstrated potent in vitro activity against the tested microorganisms, with MIC values ranging from 6.25 to 50.0 μg/mL. Among the tested compounds, two quaternary compounds ( N -but-3-enyl- and meta - ( 10 ) or para - N -chlorobenzyl ( 11 ) imidazolium 2-aldoximes) displayed the most potent and broad-spectrum activity against both Gram-positive and Gram-negative bacterial strains...
May 18, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29782216/carbapenemase-producing-carbapenem-resistant-enterobacteriaceae-from-bangkok-thailand-and-their-detection-by-the-carba-np-and-modified-carbapenem-inactivation-method-tests
#4
Warawut Laolerd, Yukihiro Akeda, Likit Preeyanon, Panan Ratthawongjirakul, Pitak Santanirand
AIM: The purpose of the study was to determine the epidemiology of carbapenemase genes among carbapenem-resistant Enterobacteriaceae and evaluate the Carba NP and modified carbapenem inactivation method (mCIM) tests in their detection. MATERIALS AND METHODS: A total of 287 nonduplicated Enterobacteriaceae isolates, which were at least resistant to one of the carbapenems, were identified and detected for carbapenemase genes by multiplex PCR covering blaKPC , blaNDM , blaVIM , blaIMP , and blaOXA-48-like ...
May 21, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29782210/colonization-with-enterobacteriaceae-producing-esbls-ampcs-and-oxa-48-in-wild-avian-species-spain-2015-2016
#5
Jesús Oteo, Aida Mencía, Verónica Bautista, Natalia Pastor, Noelia Lara, Fernando González-González, Francisco Javier García-Peña, José Campos
Antibiotic resistance is a global threat of complex and changeable epidemiology. The role of wild birds in the dissemination of antibacterial resistance might be underestimated. We studied the cloacal colonization by cefotaxime-resistant Enterobacteriaceae in 668 wild birds in Spain. Eighty-eight wild birds (13.2%) of 28 species carried cefotaxime-resistant isolates; 58 of them (8.7%) carried extended-spectrum β-lactamases (ESBLs) and 15 (2.5%) plasmid-mediated AmpCs of the blaCIT family. The 58 ESBLs belonged to the CTX-M-1 group (63...
May 21, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29780759/para-substituted-functionalised-ferrocene-esters-with-novel-antibacterial-properties
#6
Kevin Muñoz Forti, Faviola Bernard, Gustavo Santiago-Collazo, Waldemar Garcia, Jose L Vera, Enrique Meléndez, Edu B Suarez-Martinez
Introduction: Bacterial antibiotic resistance is on rise despite advances in the development of new antibiotics. In an attempt to circumvent resistance, scientists are shifting focus from modifying existent antibiotics to identifying new antibiotic compounds. Aim: To assess the potential antibiotic effects of functionalised ferrocenecarboxylates para-substituted on the phenoxy pendant group to form: 4-fluorophenyl, 4-chlorophenyl, 4-bromophenyl, 4-iodophenyl and 4-(H-pyrrol-1-yl)phenyl...
February 2018: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29780364/antibacterial-efficacy-of-polysaccharide-capped-silver-nanoparticles-is-not-compromised-by-acrab-tolc-efflux-pump
#7
Mitali Mishra, Satish Kumar, Rakesh K Majhi, Luna Goswami, Chandan Goswami, Harapriya Mohapatra
Antibacterial therapy is of paramount importance in treatment of several acute and chronic infectious diseases caused by pathogens. Over the years extensive use and misuse of antimicrobial agents has led to emergence of multidrug resistant (MDR) and extensive drug resistant (XDR) pathogens. This drastic escalation in resistant phenotype has limited the efficacy of available therapeutic options. Thus, the need of the hour is to look for alternative therapeutic approaches to mitigate healthcare concerns caused due to MDR bacterial infections...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29778819/detection-of-tem-and-ctx-m-genes-from-ciprofloxacin-resistant-proteus-mirabilis-and-escherichia-coli-isolated-on-urinary-tract-infections-utis
#8
Govindan Rajivgandhi, Muthuchamy Maruthupandy, Natesan Manoharan
The multidrug resistant Gram negative bacteria (MDRGNB) is an emerging burden and now represents a daily challenge for the management of antimicrobial therapy in healthcare settings. The present study was aimed to detect the prevalence of TEM and CTX-M type genes from GNB on urinary tract infection (UTIs). The ciprofloxacin resistant uropathogens were detected by HEXA UTI 5 disc diffusion method. The phenotypic detection of uropathogens producing extended spectrum beta lactamases (ESBLs) was confirmed by double disc combination (DDCT) and phenotype confirmation methods (PCT)...
May 17, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29778190/emergence-of-the-colistin-resistance-gene-mcr-1-and-its-variant-in-several-uncommon-species-of-enterobacteriaceae-from-commercial-poultry-farm-surrounding-environments
#9
Xiaoming Wang, Yao Wang, Yang Wang, Suxia Zhang, Zhangqi Shen, Shaolin Wang
The colistin resistance gene mcr-1 has been detected in multiple members of Enterobacteriaceae family. Here, we report the emergence of mcr-1 in Providencia alcalifaciens and a mcr-1 variant, named mcr-1.3, in Raoultella planticola. Both of the mcr-1-carrying plasmids in these two isolates belong to IncI2 type of plasmids, but they are different in sizes and genetic characteristics. We also detected the mcr-1 gene in one Enterobacter cloacae isolate, however, the mcr-1-carrying plasmid is distinct from the previous reports...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29777590/boosting-mediated-electron-transfer-in-bioelectrochemical-systems-with-tailored-defined-microbial-co-cultures
#10
Simone Schmitz, Miriam A Rosenbaum
Bioelectrochemical systems (BES) hold great promise for sustainable energy generation via a microbial catalyst from organic matter, e.g., from wastewater. In order to improve current generation in BES, understanding the underlying microbiology of the electrode community is essential. Electron mediator producing microorganism like Pseudomonas aeruginosa play an essential role in efficient electricity generation in BES. These microbes enable even non-electroactive microorganism like Enterobacter aerogenes to contribute to current production...
May 19, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29774899/smartphone-based-rapid-quantification-of-viable-bacteria-by-single-cell-microdroplet-turbidity-imaging
#11
Xiaonan Cui, Lihui Ren, Yufei Shan, Xixian Wang, Zhenlong Yang, Chunyu Li, Jian Xu, Bo Ma
Standard plate count (SPC) has been recognized as the golden standard for the quantification of viable bacteria. However, SPC usually takes one to several days to grow individual cells into a visible colony, which greatly hampers its application in rapid bacteria enumeration. Here we present a microdroplet turbidity imaging based digital standard plate count (dSPC) method to overcome this hurdle. Instead of cultivating on agar plates, bacteria are encapsulated in monodisperse microdroplets for single-cell cultivation...
May 18, 2018: Analyst
https://www.readbyqxmd.com/read/29774858/genomic-epidemiology-of-global-carbapenemase-producing-enterobacter-spp-2008-2014
#12
Gisele Peirano, Yasufumi Matsumura, Mark D Adams, Patricia Bradford, Mary Motyl, Liang Chen, Barry N Kreiswirth, Johann D D Pitout
We performed whole-genome sequencing on 170 clinical carbapenemase-producing Enterobacter spp. isolates collected globally during 2008-2014. The most common carbapenemase was VIM, followed by New Delhi metallo-β-lactamase (NDM), Klebsiella pneumoniae carbapenemase, oxacillin 48, and IMP. The isolates were of predominantly 2 species (E. xiangfangensis and E. hormaechei subsp. steigerwaltii) and 4 global clones (sequence type [ST] 114, ST93, ST90, and ST78) with different clades within ST114 and ST90. Particular genetic structures surrounding carbapenemase genes were circulating locally in various institutions within the same or between different STs in Greece, Guatemala, Italy, Spain, Serbia, and Vietnam...
June 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29753873/biodiversity-and-pathogenicity-of-bacteria-associated-with-the-gut-microbiota-of-beet-armyworm-spodoptera-exigua-h%C3%A3-bner-lepidoptera-noctuidae
#13
Ardahan Eski, İsmail Demir, Mustafa Güllü, Zihni Demirbağ
In order to find an effective and environmentally friendly biocontrol agent against Spodoptera exigua, we isolated and identified a total of 15 different bacterial species belonging to phyla Firmicutes, Proteobacteria and Bacteroidetes. According to the phenotypic, genotypic and phylogenetic properties, bacterial isolates were identified as Bacillus cereus (Se1), Lysinibacillus macroides (Se2), Pseudomonas geniculata (Se3), Paenibacillus tylopili (Se4), Staphylococcus succinus (Se5), Acinetobacter soli (Se6), Chryseobacterium indologenes (Se7), Bacillus toyonensis (Se8), Serratia marcescens (Se9), Paenibacillus amylolyticus (Se10), Paenibacillus xylanexedens (Se11), Enterobacter ludwigii (Se12), Bacillus thuringiensis (Se13), Bacillus thuringiensis (Se14) and Lysinibacillus fusiformis (Se15)...
May 10, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29753261/removal-enactment-of-organo-phosphorous-pesticide-using-bacteria-isolated-from-domestic-sewage
#14
Md Shabbir, Mukesh Singh, Swati Maiti, Sunil Kumar, Samar K Saha
Three bacteria (MS I, II and III) i.e., Pseudomonas aeruginosa (KY781886), Enterobactor ludwigii (KX881423) and Enterobacter cloacae (KX881513) isolated from domestic sewage were identified on the basis of 16S rDNA sequencing and are capable to growth in the presence of organo-phosphorous pesticide (chlorpyrifos). The mega plasmid size >23 kb was found in MS I and III. Biosurfactants of the significant amount were produced by three isolates. The ability of the isolates to degrade pesticide over 3 days in the presence of pesticides containing chlorpyrifos as the active component was estimated...
May 1, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29751417/occurrence-and-characteristics-of-extended-spectrum-%C3%AE-lactamase-and-carbapenemase-producing-bacteria-from-hospital-effluents-in-singapore
#15
Laurence Haller, Hongjie Chen, Charmaine Ng, Thai Hoang Le, Tse Hsien Koh, Timothy Barkham, Mark Sobsey, Karina Yew-Hoong Gin
One of the most important resistance mechanisms in Gram-negative bacteria today is the production of enzymes causing resistance to cephalosporin and carbapenem antibiotics. The spread of extended-spectrum β-lactamases (ESBL)- and carbapenemase- producing Gram-negative bacteria is an emerging global public health problem. The aim of the present study was to (i) assess the prevalence of carbapenem-resistant bacteria (CRB) and ESBL-producing strains in sewage effluents from two major hospitals in Singapore, (ii) characterize the isolated strains and (iii) identify some of the ESBL and carbapenemase genes responsible for the resistance...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29751127/temporal-trends-and-patterns-in-antimicrobial-resistant-gram-negative-bacteria-implicated-in-intensive-care-unit-acquired-infections-a-cohort-based-surveillance-study-in-istanbul-turkey
#16
Bulent Durdu, Evangelos I Kritsotakis, Andrew C K Lee, Perihan Torun, Ismail N Hakyemez, Bilge Gultepe, Turan Aslan
OBJECTIVES: This study assessed trends and patterns in antimicrobial resistant intensive care unit (ICU)-acquired infections caused by Gram-negative bacteria (GNB) in Istanbul, Turkey. METHODS: Bacterial culture and antibiotic susceptibility data were collected for all GNB causing nosocomial infections in five adult ICUs of a large university hospital during 2012-2015. Multi-resistance patterns were categorised as multidrug (MDR), extensively-drug (XDR) and pandrug (PDR)-resistance...
May 8, 2018: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29750595/long-term-low-frequency-cluster-of-a-german-imipenemase-1-producing-enterobacter-hormaechei-ssp-steigerwaltii-st89-in-a-tertiary-care-hospital-in-germany
#17
Andreas F Wendel, Sebastian Meyer, René Deenen, Karl Köhrer, Susanne Kolbe-Busch, Klaus Pfeffer, Matthias Willmann, Achim J Kaasch, Colin R MacKenzie
Enterobacter cloacae complex is a common cause of hospital outbreaks. A retrospective and prospective molecular analysis of carbapenem-resistant clinical isolates in a tertiary care center demonstrated an outbreak of a German-imipenemase-1 (GIM-1) metallo-beta-lactamase-producing Enterobacter hormaechei ssp. steigerwaltii affecting 23 patients between 2009 and 2016. Thirty-three isolates were sequence type 89 by conventional multilocus sequence typing (MLST) and displayed a maximum difference of 49 out of 3,643 targets in the ad-hoc core-genome MLST (cgMLST) scheme (SeqSphere+ software; Ridom, Münster, Germany)...
May 11, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29749026/molecular-identification-of-cultivable-bacteria-in-the-gut-of-adult-bactrocera-tau-walker-and-their-trapping-effect
#18
Mijuan Luo, Hehe Zhang, Yinggang Du, Atif Idrees, Longyan He, Jiahua Chen, Qing E Ji
BACKGROUND: It has been shown that some bacteria can attract their hosts. Our research aimed to identify cultivable bacterial isolates in the guts of sexually mature adult female and male Bactrocera tau and to evaluate their utility in trapping of B. tau. RESULTS: Forty-one strains of bacteria were isolated and identified from B. tau with morphological, physiological, biochemical and 16S rDNA analysis. The dominant bacterial genera shared by both females and males were Enterobacter, Providencia and Serratia...
May 11, 2018: Pest Management Science
https://www.readbyqxmd.com/read/29748922/defining-the-relationship-between-phenotypic-and-genotypic-resistance-profiles-of-multidrug-resistant-enterobacterial-clinical-isolates
#19
Lamis Galal, Neveen A Abdel Aziz, Walaa M Hassan
Fluoroquinolones and aminoglycosides offer effective therapy for extended-spectrum beta-lactamase (ESBL)-producing enterobacterial infections, but their usefulness is threatened by increasing resistant strains. OBJECTIVE: This study was conducted to demonstrate the phenotypic outcomes of the coexistence of genetic determinants mediating resistance to extended-spectrum cephalosporins and quinolones in enterobacterial isolates collected from patients with health-care-associated infections in Egypt...
May 11, 2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29748695/changes-in-intestinal-microbiota-of-bufo-gargarizans-and-its-association-with-body-weight-during-metamorphosis
#20
Lihong Chai, Zhongmin Dong, Aixia Chen, Hongyuan Wang
The assembly of intestinal microbial communities can play major roles in animal development. We hypothesized that intestinal microbial communities could mirror the developmental programs of amphibian metamorphosis. Here, we surveyed the morphological parameters of the body and intestine of Bufo gargarizans at varying developmental stages and inventoried the intestinal microbial communities of B. gargarizans at four key developmental stages via 16S rDNA gene sequencing. Firstly, our survey showed that during metamorphosis, body weight and intestinal weight were reduced by 56...
May 10, 2018: Archives of Microbiology
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