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https://www.readbyqxmd.com/read/28434982/novel-monoclonal-antibodies-against-stx1d-and-1e-and-their-use-for-improving-immunoassays
#1
Xiaohua He, Stephanie Patfield, Reuven Rasooly, Daniela Mavrici
Shiga toxins (Stxs) are major causative agents for bloody diarrhea and hemolytic uremic syndrome, a life-threatening disease in humans. No effective treatment is available. Early detection of Stxs in clinical samples is critical for disease management. As bacteria evolve, new Stxs are produced; therefore, methods used to identify them need to be improved as well. In this study, new monoclonal antibodies (mAbs) against Stx1d and 1e were developed and used to improve a commercial Stx1 kit. Incorporation of the new mAbs into the Abraxis Stx1 kit not only increased the assay sensitivity to Stx1d, but the assay was conferred the ability to detect Stx1e, a newly identified subtype of Stx1 produced by an atypical Stx-producing bacterial strain, Enterobacter cloacae M12X01451, isolated from a clinical specimen...
April 20, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28428984/a-comparison-of-molecular-typing-methods-applied-to-enterobacter-cloacae-complex-hsp60-sequencing-rep-pcr-and-mlst
#2
Roberto A Viau, Lee M Kiedrowski, Barry N Kreiswirth, Mark Adams, Federico Perez, Dror Marchaim, Dubert M Guerrero, Keith S Kaye, Latania K Logan, Maria Virginia Villegas, Robert A Bonomo
Molecular typing using repetitive sequenced-based PCR (rep-PCR) and hsp60 sequencing were applied to a collection of diverse Enterobacter cloacae complex isolates. To determine the most practical method for reference laboratories, we analyzed 71 E. cloacae complex isolates from sporadic and outbreak occurrences originating from 4 geographic areas. While rep-PCR was more discriminating, hsp60 sequencing provided a broader and a more objective geographical tracking method similar to multilocus sequence typing (MLST)...
2017: Pathogens & Immunity
https://www.readbyqxmd.com/read/28425035/a-new-ascaridid-nematode-mammalakis-zambiensis-n-sp-heterakoidea-kiwinematidae-from-the-mole-rat-fukomys-anselli-burda-zima-scharff-machol%C3%A3-n-kawalika-rodentia-bathyergidae-in-zambia
#3
Kerstin Junker, Heike Lutermann, Yasen Mutafchiev
Mammalakis zambiensis n. sp. is described from the large intestine and caecum of Fukomys anselli (Burda, Zima, Scharff, Macholán & Kawalika), a bathyergid rodent endemic to Zambia. Morphological data for comparison with its three congeners, M. macrospiculum (Ortlepp, 1939), M. spalacis (Marcu, 1930) and M. spalaxi (Kozlov & Jangolenko, 1962) are provided. Based on studies of the type-material, observations of hitherto undescribed morphological characters of M. macrospiculum, a parasite of Bathyergus suillus (Schreber) (Hystricomorpha: Bathyergidae) in South Africa, are presented...
April 19, 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28424686/mucosal-and-systemic-immune-responses-to-influenza-h7n9-antigen-ha1-2-co-delivered-intranasally-with-flagellin-or-polyethyleneimine-in-mice-and-chickens
#4
Li Song, Dan Xiong, Hongqin Song, Lili Wu, Meihua Zhang, Xilong Kang, Zhiming Pan, Xinan Jiao
Consecutive cases of human infection with H7N9 influenza viruses since 2013 in China have prompted efforts to develop an effective treatment. Subunit vaccines introduced by intranasal administration can block an infection at its primary site; flagellin (fliC) and polyethyleneimine (PEI) have been shown to be potent adjuvants. We previously generated the hemagglutinin (HA)1-2-fliC fusion protein consisting of the globular head domain (HA1-2; amino acids 62-284) of HA fused with Salmonella typhimurium fliC. In the present study, we investigated its effectiveness of both flagellin and PEI as mucosal adjuvants for the H7N9 influenza subunit vaccine...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28419869/allodemic-distribution-of-plasmids-co-harbouring-blactx-m-15-aac-6-ib-cr-qnrb-in-klebsiella-pneumoniae-is-the-main-source-of-extended-spectrum-%C3%AE-lactamases-in-uruguay-s-paediatric-hospital
#5
V Garcia-Fulgueiras, L Araujo, I Bado, N F Cordeiro, M I Mota, G Laguna, G Algorta, R Vignoli
OBJECTIVES: This study aimed to describe the characteristics of clinical isolates of extended-spectrum β-lactamase (ESBL)-producing enterobacteria (EPE) in Uruguay's paediatric hospital. METHODS: ESBLs, qnr alleles and aac(6')-Ib-cr were sought and characterised in EPE isolated between March 2010 and March 2012. Transfer of resistance determinants was assessed by conjugation. Incompatibility (Inc) groups, plasmid toxin-antitoxin systems (TAS) and plasmid size were determined in transconjugants...
April 15, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28418318/carbapenem-resistant-enterobacter-cloacae-in-patients-from-the-us-veterans-health-administration-2006-2015
#6
Brigid M Wilson, Nadim G El Chakhtoura, Sachin Patel, Elie Saade, Curtis J Donskey, Robert A Bonomo, Federico Perez
We analyzed carbapenem-resistant Enterobacteriaceae (CRE) trends among patients from the US Veterans Health Administration (VHA). After the emergence of CRE in the eastern United States, resistance rates remained stable in Klebsiella pneumoniae but increased in Enterobacter cloacae complex, suggesting a "second epidemic". VHA offers a vantage point for monitoring nationwide CRE trends.
May 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28414678/what-the-eyes-don-t-see-the-heart-does-grieve-over
#7
M Sciaudone, M Dery
INTRODUCTION: A 71 year old Peruvian woman presented with blurry vision and bilateral eye pain and had evidence of bilateral endophthalmitis on eye examination. Her past medical history was notable for multiple abdominal surgeries within the preceding months, including an incarcerated inguinal hernia repair which required an ileostomy placement, and cholecystitis requiring cholecystostomy tube placement. Over her multiple long hospitalizations, she developed bacteremia and fungemia on several occasions, with organisms including Enterobacter cloacae, Klebsiella pneumoniae, Bacteroides fragilis, Pseudomonas aeruginosa, Enterococcus faecium, and Candida albicans...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28413311/persistent-cloaca-a-long-term-follow-up-study
#8
Dinesh H Kittur, Ravindra M Vora
No abstract text is available yet for this article.
April 2017: Journal of Indian Association of Pediatric Surgeons
https://www.readbyqxmd.com/read/28413306/urogenital-management-in-cloaca-an-alternative-approach
#9
Harshjeet Singh Bal, Sudipta Sen, Cenita Sam, Jacob Chacko, John Mathai, S R Regunandan
INTRODUCTION: In the management of cloaca, there is concern that dissection of the urogenital sinus in early childhood with the aim of total anatomical correction is hazardous. Avoiding such mobilization and providing mitrofanoff channel, when needed, till peripubertal period reduces complications and is technically easier. MATERIALS AND METHODS: Forty-three cases of cloaca were managed in the period 2004-2016. Case records and radiology were reviewed retrospectively...
April 2017: Journal of Indian Association of Pediatric Surgeons
https://www.readbyqxmd.com/read/28409341/zebrafish-pronephros-development
#10
Richard W Naylor, Sarah S Qubisi, Alan J Davidson
The pronephros is the first kidney type to form in vertebrate embryos. The first step of pronephrogenesis in the zebrafish is the formation of the intermediate mesoderm during gastrulation, which occurs in response to secreted morphogens such as BMPs and Nodals. Patterning of the intermediate mesoderm into proximal and distal cell fates is induced by retinoic acid signaling with downstream transcription factors including wt1a, pax2a, pax8, hnf1b, sim1a, mecom, and irx3b. In the anterior intermediate mesoderm, progenitors of the glomerular blood filter migrate and fuse at the midline and recruit a blood supply...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/28407186/antimicrobial-activity-and-chemical-composition-of-brunfelsia-uniflora-flower-oleoresin-extracted-by-supercritical-carbon-dioxide
#11
L C T Thiesen, E Y Y Sugauara, V Tešević, J Glamočlija, M Soković, J E Gonçalves, Z C Gazim, G A Linde, N B Colauto
Brunfelsia genus is traditionally utilized in popular medicine due to its antibacterial and antifungal properties to name but a few. However, studies on the antimicrobial activity of Brunfelsia uniflora flower oleoresin have not been found yet. This study aimed to evaluate the chemical composition and antimicrobial activity of B. uniflora flower oleoresin obtained by supercritical carbon dioxide. Oleoresin from the plant dried flowers was obtained by carbon dioxide, and the chemical composition was analyzed by gas chromatographic-mass spectrometry...
April 13, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28400130/salmonella-typhimurium-induces-cloacitis-like-symptomsin-zebrafish-larvae
#12
Macarena Varas, Javiera Ortíz-Severín, Andrés E Marcoleta, Francisco Díaz-Pascual, Miguel L Allende, Carlos A Santiviago, Francisco P Chávez
Pathogenic Salmonella strains have a set of virulence factors allowing them to generate systemic infections and damage in a variety of hosts. Among these factors, bacterial proteins secreted by specialized systems are used to penetrate the host's intestinal mucosa, through the invasion and destruction of specialized epithelial M cells in the intestine. On the other hand, numerous studies have demonstrated that humans, as well as experimental animal hosts, respond to Salmonella infection by activating both innate and adaptive immune responses...
April 8, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28390961/sequencing-and-comparative-genomics-analysis-of-the-inchi2-plasmids-pt5282-mpha-and-p112298-cata-and-the-inchi5-plasmid-pynkp001-dfra
#13
Quanhui Liang, Zhe Yin, Yachao Zhao, Liqi Liang, Jiao Feng, Zhe Zhan, Hui Wang, Yajun Song, Yigang Tong, Weili Wu, Weijun Chen, Jinglin Wang, Lingxiao Jiang, Dongsheng Zhou
Incompatibility group IncHI plasmids are important vectors of antibiotic resistance in Enterobacteriaceae. In this study, a scheme for typing IncHI into five separately clustering subgroups, including previously designated IncHI1-3 as well as IncHI4-5, was proposed based on sequenced IncHI plasmids. The complete nucleotide sequences of the IncHI2 plasmids pT5282-mphA and p112298-catA and the IncHI5 plasmid pYNKP001-dfrA from clinical Enterobacter cloacae, Citrobacter freundii and Raoultella ornithinolytica isolates, respectively, were determined and were compared with IncHI2 and IncHI5 reference plasmids...
April 5, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28386532/the-draft-genome-sequence-of-the-plant-growth-promoting-rhizospheric-bacterium-enterobacter-cloacae-sbp-8
#14
Rajnish Prakash Singh, Shrayansh Nalwaya, Prabhat Nath Jha
Here, we report the draft genome sequence and annotation of plant growth promoting rhizobacterium Enterobacter cloacae SBP-8 isolated from the rhizosphere of Sorghum bicolor L. growing in desert region of Rajasthan, India. From the genome sequences, we identified the genes encoding plant growth promoting properties such as 1-aminocyclopropane-1-carboxylate deaminase (AcdS), phosphate solubilisation, siderophore, and IAA (indole acetic acid) production. The genes encoding different functions required for colonization including motility, chemotaxis, adherence, and secretion system (I, II, IV, VI) were also identified...
June 2017: Genomics Data
https://www.readbyqxmd.com/read/28385849/draft-genome-sequence-of-a-high-level-colistin-resistant-clinical-strain-of-the-enterobacter-cloacae-complex
#15
Ji Lin, Feifei Zhao, Yu Feng, Zhiyong Zong
Strain WCHECl-C4 of the Enterobacter cloacae complex, recovered from the blood of a patient with peritonitis, was high-level resistant to colistin. Here, we report its 5.1-Mb draft genome sequence, comprising 92 contigs with an average 55.74% G+C content. The genome contained 4,783 coding sequences and 68 tRNA genes.
April 6, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28380016/carbapenemase-producing-enterobacteriaceae-recovered-from-a-spanish-river-ecosystem
#16
Núria Piedra-Carrasco, Anna Fàbrega, William Calero-Cáceres, Thais Cornejo-Sánchez, Maryury Brown-Jaque, Alba Mir-Cros, Maite Muniesa, Juan José González-López
The increasing resistance to carbapenems is an alarming threat in the fight against multiresistant bacteria. The dissemination properties of antimicrobial resistance genes are supported by their detection in a diverse population of bacteria, including strains isolated from the environment. The objective of this study was to investigate the presence of carbapenemase-producing Enterobacteriaceae (CPE) collected from a river ecosystem in the Barcelona metropolitan area (Spain). Identification of β-lactamases and other resistance determinants was determined as was the antimicrobial susceptibility profile...
2017: PloS One
https://www.readbyqxmd.com/read/28379126/-community-acquired-urinary-tract-infections-in-older-adults
#17
Alberto Francisco Leoni, Aida Monterisi, Paula G Acuña
Background Community acquired urinary tract infections (caUTI) in adults are common ailments. Older adults are prone to infectious diseases, diagnosis can be difficult, their etiologic and antimicrobial resistance are poorly known. Objectives To evaluate the incidence discriminated by sex, symptoms, and to determine pathogens and their antimicrobial resistance rate. Methods A retrospective, descriptive and comparative study. We analyze uricultures among 2013 in the Hospital Nacional de Clinicas (Córdoba-Argentina)...
2017: Revista de la Facultad de Ciencias Médicas
https://www.readbyqxmd.com/read/28369471/activity-of-cefiderocol-s-649266-against-carbapenem-resistant-gram-negative-bacteria-collected-from-inpatients-in-greek-hospitals
#18
Matthew E Falagas, Tilemachos Skalidis, Konstantinos Z Vardakas, Nicholas J Legakis
Background: Cefiderocol (S-649266), a siderophore cephalosporin, utilizes a novel mechanism of entry into the periplasmic space of Gram-negative bacteria and is broadly stable to ESBLs and carbapenemases. Methods: A collection of carbapenem-resistant Gram-negative bacteria isolated from clinical specimens in 18 Greek hospitals was tested for susceptibility to cefiderocol, meropenem, ceftazidime, cefepime, ceftazidime/avibactam, ceftolozane/tazobactam, aztreonam, amikacin, ciprofloxacin, colistin and tigecycline...
March 22, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28368860/gallbladder-microbiota-variability-in-colombian-gallstones-patients
#19
Ariel Antonio Arteta, Hernan Carvajal-Restrepo, Miryan Margot Sánchez-Jiménez, Sergio Diaz-Rodriguez, Nora Cardona-Castro
INTRODUCTION: Gallbladder stones are a very frequently occurring condition. Despite bile bactericidal activity, many bacteria have been detected inside the gallbladder, and gallstones facilitate their presence. Between 3% and 5% of the patients with Salmonella spp. infection develop the carrier stage, with the bacteria persisting inside the gallbladder, shedding bacteria in their feces without signs of infection. The aim of this study was to isolate bacteria from Colombian patients with gallstones, using standard culturing methods, and to identify Salmonella spp...
March 31, 2017: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/28365385/molecular-characterization-and-antibacterial-activity-of-a-phage-type-lysozyme-from-the-manila-clam-ruditapes-philippinarum
#20
Dinglong Yang, Qing Wang, Lizhu Chen, Yongliang Liu, Ruiwen Cao, Huifeng Wu, Fei Li, Chenglong Ji, Ming Cong, Jianmin Zhao
A phage-type lysozyme, designed as RpPLYZ, was cloned and characterized from the clam Ruditapes philippinarum. The full-length cDNA of RpPLYZ was of 699 bp with an open reading frame (ORF) of 534 bp, encoding a polypeptide of 177-amino acid with a calculated molecular mass of 19.6 kDa and an isoelectric point of 9.05. Multiple alignments and phylogenetic analysis strongly suggested that RpPLYZ was a new member of the phage-type lysozyme family. The mRNA transcript of RpPLYZ was found to be constitutively expressed in a wide range of tissues and mainly in hemocytes and mantle...
March 30, 2017: Fish & Shellfish Immunology
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