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https://www.readbyqxmd.com/read/29791251/prevalence-of-ctx-m-type-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-b2-o25-st131-h30r-among-residents-in-nonacute-care-facilities-in-japan
#1
Kumiko Kawamura, Kengo Hayashi, Nao Matsuo, Kazuki Kitaoka, Kouji Kimura, Jun-Ichi Wachino, Takaaki Kondo, Yoshitsugu Iinuma, Nobuo Murakami, Shuhei Fujimoto, Yoshichika Arakawa
We investigated the prevalence and characteristics of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli among 258 residents of long-term care facilities (LTCFs) in Japan. Out of 258 fecal samples collected from nine LTCFs between November 2015 and March 2017, we recovered 59 ESBL-producing E. coli isolates. All isolates carried blaCTX-M genes, mainly blaCTX-M-27 (42.4%), blaCTX-M-14 (23.7%), and blaCTX-M-15 (18.6%). The isolates showed 7 serotypes (STs), including ST131 (n = 49, 83.1%) and ST38 (n = 4, 6...
May 23, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29789992/precise-and-economic-fib-sem-for-clem-with-2-nm-voxels-through-mitosis
#2
Manja Luckner, Gerhard Wanner
A portfolio is presented documenting economic, high-resolution correlative focused ion beam scanning electron microscopy (FIB/SEM) in routine, comprising: (i) the use of custom-labeled slides and coverslips, (ii) embedding of cells in thin, or ultra-thin resin layers for correlative light and electron microscopy (CLEM) and (iii) the claim to reach the highest resolution possible with FIB/SEM in xyz. Regions of interest (ROIs) defined in light microscope (LM), can be relocated quickly and precisely in SEM. As proof of principle, HeLa cells were investigated in 3D context at all stages of the cell cycle, documenting ultrastructural changes during mitosis: nuclear envelope breakdown and reassembly, Golgi degradation and reconstitution and the formation of the midzone and midbody...
May 23, 2018: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/29788077/irgm-gene-variants-modify-the-relationship-between-visceral-adipose-tissue-and-nafld-in-patients-with-crohn-s-disease
#3
Tracey G Simon, Kimberley W J Van Der Sloot, Samantha B Chin, Amit D Joshi, Paul Lochhead, Ashwin N Ananthakrishnan, Ramnik Xavier, Raymond T Chung, Hamed Khalili
Background: Nonalcoholic fatty liver disease (NAFLD) is an increasingly recognized comorbidity in Crohn's disease (CD), but the mechanisms are poorly understood. Autophagy is a highly conserved process regulating innate immunity that contributes to CD susceptibility. Emerging data suggest that variants in the autophagy-governing IRGM gene may contribute to the accumulation of visceral adipose tissue (VAT) and hepatic fat. Our objective was to characterize the relationship between VAT, IRGM gene variants, and NAFLD risk in patients with CD...
May 18, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29784759/of-what-use-is-connectomics-a-personal-perspective-on-the-drosophila-connectome
#4
REVIEW
Ian A Meinertzhagen
The brain is a network of neurons and its biological output is behaviour. This is an exciting age, with a growing acknowledgement that the comprehensive compilation of synaptic circuits densely reconstructed in the brains of model species is now both technologically feasible and a scientifically enabling possibility in neurobiology, much as 30 years ago genomics was in molecular biology and genetics. Implemented by huge advances in electron microscope technology, especially focused ion beam-scanning electron microscope (FIB-SEM) milling (see Glossary), image capture and alignment, and computer-aided reconstruction of neuron morphologies, enormous progress has been made in the last decade in the detailed knowledge of the actual synaptic circuits formed by real neurons, in various brain regions of the fly Drosophila It is useful to distinguish synaptic pathways that are major, with 100 or more presynaptic contacts, from those that are minor, with fewer than about 10; most neurites are both presynaptic and postsynaptic, and all synaptic sites have multiple postsynaptic dendrites...
May 20, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29779083/identifying-nonalcoholic-fatty-liver-disease-advanced-fibrosis-in-the-veterans-health-administration
#5
Yuval A Patel, Elizabeth J Gifford, Lisa M Glass, Marsha J Turner, Byungjoo Han, Cynthia A Moylan, Steve Choi, Ayako Suzuki, Dawn Provenzale, Christine M Hunt
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease. Severe NAFLD with advanced fibrosis results in substantial morbidity and mortality. Associated with metabolic syndrome, NAFLD is often initially clinically silent, yet intensive lifestyle intervention with 7% or greater weight loss can improve or resolve NAFLD. Using a Veterans Health Administration (VHA) liver biopsy cohort, we evaluated simple noninvasive fibrosis scoring systems to identify NAFLD with advanced fibrosis (or severe disease) to assist providers...
May 19, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29778771/do-serum-markers-of-liver-fibrosis-vary-by-hcv-infection-in-patients-with-alcohol-use-disorder
#6
Arantza Sanvisens, Alvaro Muñoz, Ferran Bolao, Paola Zuluaga, Magí Farré, Inmaculada Jarrin, Jordi Tor, Roberto Muga
INTRODUCTION: HCV infection is frequent in patients with alcohol use disorder (AUD). Ethanol and hepatitis C have a synergistic effect that increases the risk of end-stage liver disease. We aimed to assess fibrosis of the liver in patients admitted to treatment of AUD. METHODS: Data were collected in two hospital units between 2000 and 2014. Liver fibrosis was assessed by serum biomarkers APRI, FIB-4 and Forns, and Advanced Liver Fibrosis (ALF) was defined if APRI > 1...
May 16, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29778206/occurrence-and-characterisation-of-esbl-encoding-plasmids-among-escherichia-coli-isolates-from-fresh-vegetables
#7
Christin Freitag, G B Michael, Jun Li, Kristina Kadlec, Yang Wang, Melanie Hassel, Stefan Schwarz
Extended-spectrum β-lactamase (ESBL)-producing Escherichia coli isolates have been increasingly reported in different reservoirs. The aims of this study were to investigate the presence of ESBL-producing E. coli in fresh vegetables and to characterise their ESBL gene-carrying plasmids. Among the 245 samples from vegetables investigated during 2011-2013, seven putative ESBL-producing E. coli (salad n = 2, sprouts n = 5) were found. They were subjected to ESBL phenotypic confirmatory tests, detection/sequencing of ESBL genes, antimicrobial susceptibility testing (AST), phylotyping, XbaI-macrorestriction analysis, multilocus sequence typing and transformation...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29777455/combined-preoperative-albi-and-fib-4-is-associated-with-recurrence-of-hepatocellular-carcinoma-after-curative-hepatectomy
#8
Rui Liao, De-Wei Li, Cheng-You Du, Ming Li
BACKGROUND AND PURPOSE: Chronic inflammatory response is a risk factor for hepatocarcinogenesis and recurrence. This study aimed to develop a nomogram incorporating the combined albumin-bilirubin (ALBI) and fibrosis-4 (FIB-4) scores and the peritumoral inflammation score (PIS) to predict postoperative recurrence-free survival (RFS) of hepatocellular carcinoma (HCC). METHODS: The prognostic roles of preoperative ALBI and FIB-4 scores for HCC recurrence were investigated, and a nomogram was developed...
May 18, 2018: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/29776926/occurrence-of-traditional-and-alternative-fecal-indicators-in-tropical-urban-environments-under-different-land-use-patterns
#9
Nazanin Saeidi, Xiaoqiong Gu, Tran Ngoc Han, Shin Giek Goh, Masaaki Kitajima, Ariel Kushmaro, Bradley William Schmitz, Karina Yew-Hoong Gin
This study evaluates the geospatial distribution of fecal indicator bacteria (FIB) (i.e., E. coli , Enterococcus spp.) and the alternative fecal indicator, pepper mild mottle virus (PMMoV), in tropical freshwater environments under different land use patterns. Results show that the occurrence and concentration of microbial fecal indicators was higher for urban-dominated areas than parkland-dominated, consistent with land use weightage. Significant positive correlations with traditional FIB indicate that PMMoV is a suitable indicator of fecal contamination in tropical catchments waters (0...
May 18, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29776574/incidence-of-bleeding-in-patients-with-atrial-fibrillation-and-advanced-liver-fibrosis-on-treatment-with-vitamin-k-or-non-vitamin-k-antagonist-oral-anticoagulants
#10
Daniele Pastori, Gregory Y H Lip, Alessio Farcomeni, Francesco Del Sole, Angela Sciacqua, Francesco Perticone, Rossella Marcucci, Elisa Grifoni, Pasquale Pignatelli, Francesco Violi
OBJECTIVES: To investigate the incidence of bleeding events in atrial fibrillation (AF) patients treated with vitamin K (VKAs) or non-vitamin K antagonist oral anticoagulants (NOACs) screened for the presence of liver fibrosis (LF). BACKGROUND: Previous studies provided conflicting results on bleeding risk in AF patients with liver disease on VKAs, and no data on NOACs in this setting are available. METHODS: Post-hoc analysis of a prospective, observational multicentre study including 2330 AF outpatients treated with VKAs (n = 1297) or NOACs (n = 1033)...
August 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29775789/e-coli-encoding-blandm-5-associated-with-community-acquired-uti-cases-with-unusual-mic-creep-like-phenomenon-against-imipenem
#11
Varsha Rani Gajamer, Amitabha Bhattacharjee, Deepjyoti Paul, Chandrayee Deshamukhya, Ashish Kr Singh, Nilu Pradhan, Hare Krishna Tiwari
OBJECTIVES: Carbapenemase-producing Escherichia coli are of major clinical concern. The present study aimed to identify NDM-5 producing E.coli associated with community-acquired urinary tract infection, co-harboring ESBL genes and a pattern of imipenem MIC creep. METHODS: A total of 973 urine samples were collected from females of age between 18-49 diagnosed with UTI. Isolates were identified by standard microbiological procedures. Presence of blaNDM and ESBL genes was determined by PCR assay and sequencing...
May 15, 2018: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29767993/multi-metallic-microparticles-increase-the-potency-of-rifampicin-against-intracellular-mycobacterium-tuberculosis
#12
Timothy Ellis, Michele Chiappi, Andres Garcia-Trenco, Maryam Al-Ejji, Srijata Sarkar, Theoni K Georgiou, Milo Sebastian Peter Shaffer, Teresa D Tetley, Stephan Schwander, Mary P Ryan, Alexandra E Porter
Mycobacterium tuberculosis (M.tb) has the extraordinary ability to adapt to the administration of antibiotics through the development of resistance mechanisms. By rapidly exporting drugs from within the cytosol, these pathogenic bacteria diminish antibiotic potency and drive the presentation of drug tolerant tuberculosis (TB). The membrane integrity of M.tb is pivotal in retaining these drug-resistant traits. Silver (Ag) and zinc oxide (ZnO) nanoparticles (NPs) are established antimicrobial agents that effectively compromise membrane stability, giving rise to increased bacterial permeability to antibiotics...
May 16, 2018: ACS Nano
https://www.readbyqxmd.com/read/29754026/precipitation-influences-pathogenic-bacteria-and-antibiotic-resistance-gene-abundance-in-storm-drain-outfalls-in-coastal-sub-tropical-waters
#13
Warish Ahmed, Qian Zhang, Aldo Lobos, Jacob Senkbeil, Michael J Sadowsky, Valerie J Harwood, Nazanin Saeidi, Oswald Marinoni, Satoshi Ishii
Stormwater contamination can threaten the health of aquatic ecosystems and human exposed to runoff via nutrient and pathogen influxes. In this study, the concentrations of 11 bacterial pathogens and 47 antibiotic resistance genes (ARGs) were determined by using high-throughput microfluidic qPCR (MFQPCR) in several storm drain outfalls (SDOs) during dry and wet weather in Tampa Bay, Florida, USA. Data generated in this study were also compared with the levels of fecal indicator bacteria (FIB) and sewage-associated molecular markers (i...
May 10, 2018: Environment International
https://www.readbyqxmd.com/read/29751348/measuring-topographies-from-conventional-sem-acquisitions
#14
Qiwei Shi, Stéphane Roux, Félix Latourte, François Hild, Dominique Loisnard, Nicolas Brynaert
The present study extends the stereoscopic imaging principle for estimating the surface topography to two orientations, namely, normal to the electron beam axis and inclined at 70° as suited for EBSD analyses. In spite of the large angle difference, it is shown that the topography can be accurately determined using regularized global Digital Image Correlation. The surface topography is compared to another estimate issued from a 3D FIB-SEM procedure where the sample surface is first covered by a Pt layer, and its initial topography is progressively revealed from successive FIB-milling...
April 27, 2018: Ultramicroscopy
https://www.readbyqxmd.com/read/29740066/approach-to-high-quality-gan-lateral-nanowires-and-planar-cavities-fabricated-by-focused-ion-beam-and-metal-organic-vapor-phase-epitaxy
#15
Galia Pozina, Azat R Gubaydullin, Maxim I Mitrofanov, Mikhail A Kaliteevski, Iaroslav V Levitskii, Gleb V Voznyuk, Evgeniy E Tatarinov, Vadim P Evtikhiev, Sergey N Rodin, Vasily N Kaliteevskiy, Leonid S Chechurin
We have developed a method to fabricate GaN planar nanowires and cavities by combination of Focused Ion Beam (FIB) patterning of the substrate followed by Metal Organic Vapor Phase Epitaxy (MOVPE). The method includes depositing a silicon nitride mask on a sapphire substrate, etching of the trenches in the mask by FIB with a diameter of 40 nm with subsequent MOVPE growth of GaN within trenches. It was observed that the growth rate of GaN is substantially increased due to enhanced bulk diffusion of the growth precursor therefore the model for analysis of the growth rate was developed...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29738917/analysis-and-comparison-of-focused-ion-beam-milling-and-vibratory-polishing-sample-surface-preparation-methods-for-porosity-study-of-u-mo-plate-fuel-for-research-and-test-reactors
#16
Bjorn Westman, Brandon Miller, Jan-Fong Jue, Assel Aitkaliyeva, Dennis Keiser, James Madden, Julie D Tucker
Uranium-Molybdenum (U-Mo) low enriched uranium (LEU) fuels are a promising candidate for the replacement of high enriched uranium (HEU) fuels currently in use in a high power research and test reactors around the world. Contemporary U-Mo fuel sample preparation uses focused ion beam (FIB) methods for analysis of fission gas porosity. However, FIB possess several drawbacks, including reduced area of analysis, curtaining effects, and increased FIB operation time and cost. Vibratory polishing is a well understood method for preparing large sample surfaces with very high surface quality...
May 2, 2018: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/29737537/genetic-polymorphisms-in-the-fvii-gene-is-associated-with-lower-extremity-deep-venous-thrombosis-a-case-control-study
#17
Jian-Wei Liu, Dong-Qiong Chen
This study aims to explore the associations between FVII gene polymorphisms (R353Q, 5'F7, and -402G/A) and lower extremity deep venous thrombosis (LEDVT) in a Chinese Han population. LEDVT patients (153) and healthy people (174) were, respectively, as case and control groups and evaluated related biochemical indicators. Gene polymorphisms of R353Q, 5'F7, and -402G/A of FVII, serum FVII level, antithrombin activity, plasma fibrinogen content, and plasma D-dimer (D-D) level were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), ELISA, chromogenic substrate assay, coagulating assay, and Immunoturbidimetry assay, respectively...
May 8, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29736951/factors-associated-with-advanced-hepatic-fibrosis-in-patients-with-various-internal-diseases-a-multicenter-community-based-survey
#18
Takumi Kawaguchi, Tetsuaki Inokuchi, Tomoki Honma, Satoshi Itano, Eiji Kawasaki, Chizuko Inada, Toshichika Aoki, Naohira Tsumura, Akiteru Araki, Tokunori Mukae, Takuji Torimura
BACKGROUND AND AIMS: Advanced hepatic fibrosis can occur in patients with various diseases, including diabetes mellitus and hypertension. We aimed to investigate the prevalence and risk factors of advanced hepatic fibrosis in patients with various internal diseases. PATIENTS AND METHODS: We performed a community-based survey in which 1,012 patients were enrolled (mean age, 63.1 ± 10.8 years; female/male, 505/507). Hepatic fibrosis was evaluated by Fib-4 index and patients were classified into high and low Fib-4 groups...
May 7, 2018: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/29733490/the-efficacy-of-serum-brain-natriuretic-peptide-for-the-early-detection-of-portopulmonary-hypertension-in-biliary-atresia-patients-before-liver-transplantation
#19
Koichiro Yoshimaru, Toshiharu Matsuura, Yoshiaki Takahashi, Yusuke Yanagi, Hazumu Nagata, Shouichi Ohga, Tomoaki Taguchi
Severe portopulmonary hypertension (POPH) is a contraindication for liver transplantation (LT) because of the high risk of postoperative heart failure. The early detection of POPH is important for patients with biliary atresia (BA). Brain natriuretic peptide (BNP) is known to be correlated with liver fibrosis in patients with liver cirrhosis. The aim of this study was to elucidate the efficacy of BNP measurement for the follow-up of patients with BA. Thirty-two patients with BA were identified from September 2011 to December 2016...
May 7, 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29730507/temperature-distribution-of-wedge-shaped-specimen-in-tem
#20
Lu Chen, Yong Wang, Ze Zhang
Understanding the electron irradiation effects, especially the heating effect, is very important to the in-situ TEM experiments. A model is established to describe the temperature distribution of FIB prepared wedge-shaped specimen induced by electron irradiation, and a Cu2 Se specimen is presented to estimate the temperature distribution inside the observed area under different dose rates in an in-situ TEM heating experiments. The result indicates that in normal situations, the electron irradiation caused temperature inhomogeneity inside the observed area is ignorable...
April 25, 2018: Micron: the International Research and Review Journal for Microscopy
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