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https://www.readbyqxmd.com/read/28345718/probing-the-binding-affinity-of-plasma-proteins-adsorbed-on-au-nanoparticles
#1
Xiaoning Zhang, Junting Zhang, Fan Zhang, Shaoning Yu
Nanoparticle (NP) surfaces are modified immediately by the adsorption of proteins when exposed to human blood, leading to the formation of a protein corona. The adsorption of serum proteins is the key process for exploring the bioapplication and biosafety of NPs. In this study, NP-protein binding affinity (Ka) was investigated. Some serum proteins, such as human serum albumin (HSA), trypsin (TRP), hemoglobin (Hb), myoglobin (MB), immunoglobulin G (IgG), carbonic anhydrase (CA), fibrinogen (FIB), chymotrypsin and r-globulin, were used with gold nanoparticles (AuNPs) to address binding affinity according to isothermal titration calorimetry (ITC) combined with dynamic light scattering (DLS) and fluorescence quenching...
March 27, 2017: Nanoscale
https://www.readbyqxmd.com/read/28335783/svr-rates-of-hcv-infected-population-under-peg-ifn-%C3%AE-r-treatment-in-northwest-china
#2
Yanhua Li, Jiuping Wang, Juan Wang, Yunfeng Xiao, Bin Xu, Hongwei Li, Liu Yang, Xiaoke Hao, Yueyun Ma
BACKGROUND: Chronic HCV Patients taking PEG-IFN-α/R from different ethnic groups have different probabilities of reaching a sustained viral response (SVR). There are many influence factors, such as HCV genotype, IL-28B single-nucleotide polymorphisms (SNP), Fibrosis 4 index (FIB-4), and aspartate aminotransferase-to-platelet ratio index (APRI) score. But the baseline factors in relation to treatment outcome was still not much clear. METHODS: We evaluated data from 231 chronic HCV patients with or without liver fibrosis and their antiviral efficacy after treatment with pegylated interferon plus ribavirin (PEG-IFN-α/R) for 24-48 weeks...
March 23, 2017: Virology Journal
https://www.readbyqxmd.com/read/28335448/a-community-multi-omics-approach-towards-the-assessment-of-surface-water-quality-in-an-urban-river-system
#3
David J Beale, Avinash V Karpe, Warish Ahmed, Stephen Cook, Paul D Morrison, Christopher Staley, Michael J Sadowsky, Enzo A Palombo
A multi-omics approach was applied to an urban river system (the Brisbane River (BR), Queensland, Australia) in order to investigate surface water quality and characterize the bacterial population with respect to water contaminants. To do this, bacterial metagenomic amplicon-sequencing using Illumina next-generation sequencing (NGS) of the V5-V6 hypervariable regions of the 16S rRNA gene and untargeted community metabolomics using gas chromatography coupled with mass spectrometry (GC-MS) were utilized. The multi-omics data, in combination with fecal indicator bacteria (FIB) counts, trace metal concentrations (by inductively coupled plasma mass spectrometry (ICP-MS)) and in-situ water quality measurements collected from various locations along the BR were then used to assess the health of the river ecosystem...
March 14, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28333331/multiregional-dissemination-of-kpc-producing-klebsiella-pneumoniae-st258-st512-genotypes-in-poland-2010-14
#4
Anna Baraniak, Radoslaw Izdebski, Dorota Zabicka, Katarzyna Bojarska, Sandra Górska, Elzbieta Literacka, Janusz Fiett, Waleria Hryniewicz, Marek Gniadkowski
Objectives: In 2008-09, the KPC carbapenemase epidemiology in Poland was dominated by a Klebsiella pneumoniae ST258 KPC-2 outbreak in Warsaw and its administrative region. The aim of this study was to analyse the situation in 2010-14, with a focus on new outbreaks in other parts of the country. Methods: KPCs were detected in all suspected isolates by PCR. The detailed study was performed on 173 isolates from 2010 to 2012, and included PFGE and MLST, PCR identification of K...
March 9, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28328813/evaluation-of-apri-and-fib-4-for-noninvasive-assessment-of-significant-fibrosis-and-cirrhosis-in-hbeag-negative-chb-patients-with-alt%C3%A2-%C3%A2-%C3%A2-2-uln-a-retrospective-cohort-study
#5
Qiang Li, Xiaojing Ren, Chuan Lu, Weixia Li, Yuxian Huang, Liang Chen
To evaluate the performance of aspartate transaminase-to-platelet ratio index (APRI) and fibrosis index based on four factors (FIB-4) to predict significant fibrosis and cirrhosis in hepatitis B virus e antigen (HBeAg)-negative chronic hepatitis B (CHB) patients with alanine transaminase (ALT) ≤ twice the upper limit of normal (2 ULN).Histologic and laboratory data of 236 HBeAg-negative CHB patients with ALT ≤ 2 ULN were analyzed. Predicted fibrosis stage, based on established scales and cut-offs for APRI and FIB-4, was compared with METAVIR scores obtained from liver biopsy...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28327151/quantification-of-silver-nanoparticle-uptake-and-distribution-within-individual-human-macrophages-by-fib-sem-slice-and-view
#6
Erik Guehrs, Michael Schneider, Christian M Günther, Piet Hessing, Karen Heitz, Doreen Wittke, Ana López-Serrano Oliver, Norbert Jakubowski, Johanna Plendl, Stefan Eisebitt, Andrea Haase
BACKGROUND: Quantification of nanoparticle (NP) uptake in cells or tissues is very important for safety assessment. Often, electron microscopy based approaches are used for this purpose, which allow imaging at very high resolution. However, precise quantification of NP numbers in cells and tissues remains challenging. The aim of this study was to present a novel approach, that combines precise quantification of NPs in individual cells together with high resolution imaging of their intracellular distribution based on focused ion beam/ scanning electron microscopy (FIB/SEM) slice and view approaches...
March 21, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28324645/three-dimensional-analysis-of-somatic-mitochondrial-dynamics-in-fission-deficient-injured-motor-neurons-using-fib-sem
#7
Hiromi Tamada, Sumiko Kiryu-Seo, Hiroki Hosokawa, Keisuke Ohta, Naotada Ishihara, Masatoshi Nomura, Katsuyoshi Mihara, Kei-Ichiro Nakamura, Hiroshi Kiyama
Mitochondria undergo morphological changes through fusion and fission for their quality control, which are vital for neuronal function. In this study, we examined three-dimensional morphologies of mitochondria in motor neurons under normal, nerve injured, and nerve injured plus fission-impaired conditions using the focused ion beam/scanning electron microscopy (FIB/SEM), because the FIB/SEM technology is a powerful tool to demonstrate both 3D images of whole organelle and the intra-organellar structure simultaneously...
March 21, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28323868/-waiting-for-daas-a-retrospective-chart-review-of-patients-with-untreated-hepatitis-c-in-rwanda
#8
Neil Gupta, Jules Kabahizi, Constance Mukabatsinda, Timothy David Walker, Emmanuel Musabeyezu, Athanase Kiromera, Jennifer Ilo Van Nuil, Kevin Steiner, Joia Mukherjee, Sabin Nsanzimana, Aimable Mbituyumuremyi
BACKGROUND: Access to treatment for hepatitis C virus (HCV) in sub-Saharan Africa is extremely limited. With the advent of direct acting antivirals (DAAs), highly effective and easy-to-deliver oral regimens are now available on the global market. This study was conducted to understand the background and characteristics of a national cohort of patients with HCV infection enrolled in care and awaiting therapy with DAAs. METHODS AND FINDINGS: We conducted a retrospective chart review of all adult patients with confirmed HCV infection who were currently enrolled in care and treatment at the four existing hepatitis referral centers in Rwanda...
2017: PloS One
https://www.readbyqxmd.com/read/28322102/gamma-glutamyl-transpeptidase-to-platelet-ratio-index-is-a-good-noninvasive-biomarker-for-predicting-liver-fibrosis-in-chinese-chronic-hepatitis-b-patients
#9
Rong-Qi Wang, Qing-Shan Zhang, Su-Xian Zhao, Xue-Min Niu, Jing-Hua Du, Hui-Juan Du, Yue-Min Nan
Objective To evaluate whether gamma-glutamyl transpeptidase to platelet ratio index (GPRI) can diagnose the extent of liver fibrosis in Chinese patients with chronic hepatitis B (CHB) infection. Methods This prospective observational study used liver biopsy results as the gold standard to evaluate the ability of GPRI to predict hepatic fibrosis compared with two other markers, the aspartate aminotransferase (AST) to platelet ratio index (APRI) and fibrosis-4 score (FIB-4). The clinical and demographic factors that affected GPRI, independent of liver fibrosis, were assessed using multivariate linear regression analyses...
December 2016: Journal of International Medical Research
https://www.readbyqxmd.com/read/28318459/mitigating-curtaining-artifacts-during-ga-fib-tem-lamella-preparation-of-a-14-nm-finfet-device
#10
Andrey Denisyuk, Tomáš Hrnčíř, Jozef Vincenc Oboňa, Sharang, Martin Petrenec, Jan Michalička
We report on the mitigation of curtaining artifacts during transmission electron microscopy (TEM) lamella preparation by means of a modified ion beam milling approach, which involves altering the incident angle of the Ga ions by rocking of the sample on a special stage. We applied this technique to TEM sample preparation of a state-of-the-art integrated circuit based on a 14-nm technology node. Site-specific lamellae with a thickness <15 nm were prepared by top-down Ga focused ion beam polishing through upper metal contacts...
March 20, 2017: Microscopy and Microanalysis
https://www.readbyqxmd.com/read/28317873/a-new-method-to-evaluate-the-dose-effect-relationship-of-a-tcm-formula-gegen-qinlian-decoction-focus-mode-of-integrated-biomarkers
#11
Zhi-Qiang Huang, Xue-Mei Fan, Yi-Ming Wang, Qiong-Lin Liang, Xiao-Lin Tong, Yu Bai, Ying-Meng Li, Guo-An Luo, Chao Chen
It is difficult to accurately evaluate the efficacy of traditional Chinese medicine (TCM), which leads to the uncertainty and complexity of dose-effect analysis. In this study we established the "Focus" mode of biomarkers to characterize the dose-effect relationship of Gegen Qinlian Decoction (GQD), a TCM formula for treating type 2 diabetes mellitus (2-DM). A rat model of 2-DM was established through high fat diet feeding combined with low-dose STZ injection. Rats with 2-DM were administered high, middle or low doses (6...
March 20, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28316051/pathogenic-multiple-antimicrobial-resistant-escherichia-coli-serotypes-in-recreational-waters-of-mumbai-india-a-potential-public-health-risk
#12
Aayushi Maloo, Abhay B Fulke, Najmuddin Mulani, Soniya Sukumaran, Anirudh Ram
Globally, coastal waters have emerged into a pool of antibiotic resistance genes and multiple antibiotic resistant microorganisms, and pathogenicity of these resistant microorganisms in terms of serotypes and virulence genes has made the environment vulnerable. The current study underscores the presence of multiple antibiotic resistant pathogenic serotypes and pathotypes of Escherichia coli, the predominant faecal indicator bacteria (FIB), in surface water and sediment samples of famous recreational beaches (Juhu, Versova, Mahim, Dadar, and Girgaon) of Mumbai...
March 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28304098/bacteriophages-as-indicators-of-fecal-pollution-and-enteric-virus-removal
#13
REVIEW
Brian R McMinn, Nicholas J Ashbolt, Asja Korajkic
Bacteriophages are an attractive alternative to fecal indicator bacteria (FIB), particularly as surrogates of enteric virus fate and transport, due to their closer morphological and biological properties. Based on a review of published data, we summarize densities of coliphages (F+ and somatic), Bacteroides spp. and enterococci bacteriophages (phages) in individual human waste, raw wastewater, ambient fresh and marine waters and removal through wastewater treatment processes utilizing traditional treatments...
March 17, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28299813/improvement-of-liver-stiffness-in-patients-with-hepatitis-c-virus-infection-who-received-direct-acting-antiviral-therapy-and-achieved-sustained-virological-response
#14
Toshifumi Tada, Takashi Kumada, Hidenori Toyoda, Kazuyuki Mizuno, Yasuhiro Sone, Saki Kataoka, Shinichi Hashinokuchi
BACKGROUND AND AIM: There is insufficient research on whether direct-acting antiviral (DAA) therapy can improve liver fibrosis in patients with chronic hepatitis C virus (HCV). We evaluated sequential changes in liver stiffness using shear wave elastography (SWE) in patients with HCV who received DAA therapy. METHODS: A total of 210 patients with HCV who received daclatasvir and asunaprevir therapy and achieved sustained virological response (SVR) were analyzed...
March 15, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28298195/role-of-systemic-inflammation-scores-for-prediction-of-clinical-outcomes-in-patients-treated-with-atazanavir-not-boosted-by-ritonavir-in-the-italian-master-cohort
#15
Maria Concetta Postorino, Mattia Prosperi, Emanuele Focà, Eugenia Quiros-Roldan, Elisa Di Filippo, Franco Maggiolo, Alberto Borghetti, Nicoletta Ladisa, Massimo Di Pietro, Andrea Gori, Laura Sighinolfi, Angelo Pan, Nicola Mazzini, Carlo Torti
BACKGROUND: Atazanavir (ATV) not boosted by ritonavir (uATV) has been frequently used in the past for switching combination antiretroviral therapy (cART). However, the clinical outcomes and predictors of such strategy are unknown. METHODS: An observational study was carried out on the Italian MASTER, selecting HIV infected patients on cART switching to an uATV-containing regimen. Baseline was set as the last visit before uATV initiation. In the primary analysis, a composite clinical end-point was defined as the first occurring of any condition among: liver, cardiovascular, kidney, diabetes, non AIDS related cancer or death events...
March 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28297803/-correlation-of-liver-stiffness-measured-by-fibrotouch-and-fibroscan-with-ishak-fibrosis-score-in-patients-with-chronic-hepatitis-b
#16
G F Chen, J Ping, H T Gu, Z M Zhao, Y Zhou, F Xing, Y Y Tao, Y P Mu, P Liu, C H Liu
Objective: To investigate the correlation of liver stiffness measured by FibroTouch (FT) and FibroScan (FS) with Ishak fibrosis score in patients with chronic hepatitis B. Methods: A total of 313 patients with chronic hepatitis B who visited Department of Liver Cirrhosis in Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine from November 2014 to May 2016 were enrolled. All the patients underwent liver biopsy, and FT and FS were used to determine liver stiffness measurement (LSM)...
February 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28291703/fdp-fibrinogen-ratio-reflects-the-requirement-of-packed-red-blood-cell-transfusion-in-patients-with-blunt-trauma
#17
Shuichi Hagiwara, Makoto Aoki, Masato Murata, Minoru Kaneko, Yumi Ichikawa, Jun Nakajima, Yuta Isshiki, Yusuke Sawada, Jun'ichi Tamura, Kiyohiro Oshima
PURPOSE: To find factors that predict the requirement of packed red blood cells (pRBC) transfusion in patients with blunt trauma on arrival at the hospital. METHODS: We conducted blood tests in trauma patients whose trauma severity was suspected as being 3 and over in the Abbreviated Injury Scale. Patients were divided into the blood transfusion (BT) and control groups according to the requirement of pRBC transfusion within 24h after arrival. RESULTS: We analyzed 347 patients (BT group, n=14; control group, n=333)...
March 7, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28288193/nonalcoholic-fatty-liver-disease-and-increased-risk-of-1-year-all-cause-and-cardiac-hospital-readmissions-in-elderly-patients-admitted-for-acute-heart-failure
#18
Filippo Valbusa, Stefano Bonapace, Davide Agnoletti, Luca Scala, Cristina Grillo, Pietro Arduini, Emanuela Turcato, Alessandro Mantovani, Giacomo Zoppini, Guido Arcaro, Christopher Byrne, Giovanni Targher
Nonalcoholic fatty liver disease (NAFLD) is an emerging risk factor for heart failure (HF). Although some progress has been made in improving survival among patients admitted for HF, the rates of hospital readmissions and the related costs continue to rise dramatically. We sought to examine whether NAFLD and its severity (diagnosed at hospital admission) was independently associated with a higher risk of 1-year all-cause and cardiac re-hospitalization in patients admitted for acute HF. We studied 212 elderly patients who were consecutively admitted with acute HF to the Hospital of Negrar (Verona) over a 1-year period...
2017: PloS One
https://www.readbyqxmd.com/read/28287558/characterization-of-calcification-events-using-live-optical-and-electron-microscopy-techniques-in-a-marine-tubeworm
#19
Vera B S Chan, Takashi Toyofuku, George Wetzel, Laxmikant Saraf, Vengatesen Thiyagarajan, Andrew S Mount
Characterizing the first event of biological production of calcium carbonate requires a combination of microscopy approaches. First, intracellular pH distribution and calcium ions can be observed using live microscopy over time. This allows identification of the life stage and the tissue with the feature of interest for further electron microscopy studies. Life stage and tissues of interest are typically higher in pH and Ca signals. Here, using H. elegans, we present a protocol to characterize the presence of calcium carbonate structures in a biological specimen on the scanning electron microscope (SEM), using energy-dispersive X-ray spectroscopy (EDS) to visualize elemental composition, using electron backscatter diffraction (EBSD) to determine the presence of crystalline structures, and using transmission electron microscopy (TEM) to analyze the composition and structure of the material...
February 28, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28278182/serum-amyloid-a-protein-z-and-c4b-binding-protein-%C3%AE-chain-as-new-potential-biomarkers-for-pulmonary-tuberculosis
#20
Ting-Ting Jiang, Li-Ying Shi, Li-Liang Wei, Xiang Li, Su Yang, Chong Wang, Chang-Ming Liu, Zhong-Liang Chen, Hui-Hui Tu, Zhong-Jie Li, Ji-Cheng Li
The aim of this study was to discover novel biomarkers for pulmonary tuberculosis (TB). Differentially expressed proteins in the serum of patients with TB were screened and identified by iTRAQ-two dimensional liquid chromatography tandem mass spectrometry analysis. A total of 79 abnormal proteins were discovered in patients with TB compared with healthy controls. Of these, significant differences were observed in 47 abnormally expressed proteins between patients with TB or pneumonia and chronic obstructive pulmonary disease (COPD)...
2017: PloS One
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