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Vasily Isakov, Dzmitry Paduta, Rolando M Viani, Jeffrey V Enejosa, Viktor Pasechnikov, Olga Znoyko, Pavel Ogurtsov, Pavel O Bogomolov, Marina V Maevskaya, Xiaotian Chen, Nancy S Shulman
OBJECTIVE: An estimated 336 per 100 000 people in Russia are infected with hepatitis C virus, including up to 75% with genotype (GT) 1b. In the TURQUOISE-II/-III trials, a 12-week regimen of the direct-acting antiviral agents ombitasvir (OBV), paritaprevir (PTV), ritonavir, and dasabuvir (DSV) in GT1b-infected patients with compensated cirrhosis resulted in 12-week sustained virologic response (SVR) rates of 100%. PATIENTS AND METHODS: In TURQUOISE-IV, GT1b-infected patients (n=36) from Russia and Belarus with compensated cirrhosis, who were treatment naive or previously treated with pegylated interferon/ribavirin (RBV), received OBV/PTV/ritonavir+DSV+RBV for 12 weeks...
May 14, 2018: European Journal of Gastroenterology & Hepatology
Charlotte Philippe, Arnout F Gregoir, Eli S J Thoré, Gudrun De Boeck, Luc Brendonck, Tom Pinceel
The killifish Nothobranchius furzeri is an emerging model organism in the field of ecotoxicology and its applicability in acute and chronic ecotoxicity testing has been demonstrated. Overall, the sensitivity of the species to toxic compounds is in the range with, or higher than, that of other model species. This work describes protocols for acute, chronic, and multigenerational bioassays of single and combined stressor effects on N. furzeri. Due to its short maturation time and life-cycle, this vertebrate model allows the study of endpoints such as maturation time and fecundity within four months...
April 24, 2018: Journal of Visualized Experiments: JoVE
Zhiying Luo, Rong Liu, Bao Sun, Xinming Zhou, Zhaoqian Liu, Honghao Zhou, Heng Xu, Xi Li, Wei Zhang
OBJECTIVE: To identify warfarin dose-associated DNA methylation changes, we conducted the first genomewide DNA methylation association study. METHOD: A total of 22 patients who required an extreme warfarin dosage from VKORC1 -1639AA & CYP2C9*1*1 genotype group were enrolled in this study. The Illumina Infinium HumanMethylation450 platform was used to perform genome-scale DNA methylation profiling, identifying differentially methylated CpG sites by a nonparametric test...
May 1, 2018: Die Pharmazie
Elisabeth M Messmer, Caroline Möhring-Bengisu, Christina Miller
A cystic lesion of the lid margin was excised suspecting basal cell carcinoma. On histology, black-turquoise pigment was seen in the dermis adjacent to the basal cell carcinoma. It was pronounced perivascular, intracellular in macrophages and fibroblasts, but also extracellular as free pigment in the tissue, compatible with an eyelid line tattoo. Typical tissue reactions to tattoo ink, meibomian gland dysfunction after lid margin tattoo, as well as inflammatory reactions in the retina and choroid associated with tattoos distant from the eye are discussed...
May 3, 2018: Klinische Monatsblätter Für Augenheilkunde
Joanna Dodzian, Sam Kean, Jens Seidel, Dario Riccardo Valenzano
The development of husbandry practices in non-model laboratory fish used for experimental purposes has greatly benefited from the establishment of reference fish model systems, such as zebrafish and medaka. In recent years, an emerging fish - the turquoise killifish (Nothobranchius furzeri) - has been adopted by a growing number of research groups in the fields of biology of aging and ecology. With a captive life span of 4 - 8 months, this species is the shortest-lived vertebrate raised in captivity and allows the scientific community to test - in a short time - experimental interventions that can lead to alterations of the aging rate and life expectancy...
April 11, 2018: Journal of Visualized Experiments: JoVE
Yani Hua, Juan Xiao, Qinqin Zhang, Chang Cui, Chuan Wang
A new magnetic nano-adsorbent, polycatechol modified Fe3 O4 magnetic nanoparticles (Fe3 O4 /PCC MNPs) were prepared by a facile chemical coprecipitation method using iron salts and catechol solution as precursors. Fe3 O4 /PCC MNPs owned negatively charged surface with oxygen-containing groups and showed a strong adsorption capacity and fast adsorption rates for the removal of cationic dyes in water. The adsorption capacity of methylene blue (MB), cationic turquoise blue GB (GB), malachite green (MG), crystal violet (CV) and cationic pink FG (FG) were 60...
April 12, 2018: Nanoscale Research Letters
Chi-Kuo Hu, Anne Brunet
The African turquoise killifish has recently gained significant traction as a new research organism in the aging field. Our understanding of aging has strongly benefited from canonical research organisms-yeast, C. elegans, Drosophila, zebrafish, and mice. Many characteristics that are essential to understand aging-for example, the adaptive immune system or the hypothalamo-pituitary axis-are only present in vertebrates (zebrafish and mice). However, zebrafish and mice live more than 3 years and their relatively long lifespans are not compatible with high-throughput studies...
March 24, 2018: Aging Cell
Milan Vrtílek, Jakub Žák, Matej Polačik, Radim Blažek, Martin Reichard
The natural history of model organisms is often overlooked despite its importance to correctly interpret the outcome of laboratory studies. Ageing is particularly understudied in natural populations. To address this gap, we present lifetime demographic data from wild populations of an annual species, the turquoise killifish, Nothobranchius furzeri, a model species in ageing research, and two other species of coexisting annual killifishes. Annual killifish hatch synchronously, have non-overlapping generations, and reproduce daily after reaching sexual maturity...
March 19, 2018: Scientific Reports
Jian Shang, Fan Wang, Pengfei Chen, Xiaobing Wang, Feng Ding, Shi Liu, Qiu Zhao
BACKGROUNDS AND AIMS: Human colon adenocarcinoma is one of the major causes of tumor-induced death worldwide. A complicated gene interconnection network significantly regulates its progression and prognosis. The aim of our study was to find hub genes associated with the progression and prognosis of colon adenocarcinoma and to illustrate the underlying mechanisms. METHODS: A weighted gene co-expression network analysis was performed in our study to identify significant gene modules and hub genes associated with the TNM stage of colon adenocarcinoma (n = 441)...
May 2018: Digestive Diseases and Sciences
Zhonghua Song, Wenhua Zhao, Danfeng Cao, Jinqing Zhang, Shouhua Chen
Gastric cancer (GC) is the fifth most common cancer and the third leading cause of cancer-related deaths worldwide. The high mortality might be attributed to delay in detection and is closely related to lymph node metastasis. Therefore, it is of great importance to explore the mechanism of lymph node metastasis and find strategies to block GC metastasis. Messenger RNA (mRNA), microRNA (miRNA) and long non-coding RNA (lncRNA) expression data and clinical data were downloaded from The Cancer Genome Atlas (TCGA) database...
2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
Chun-Wei Yang, Shu-Fang Wang, Xiang-Li Yang, Lin Wang, Lin Niu, Ji-Xiang Liu
One of the most common head and neck cancers is laryngeal squamous cell carcinoma (LSCC). LSCC exhibits high mortality rates and has a poor prognosis. The molecular mechanisms leading to the development and progression of LSCC are not entirely clear despite genetic and therapeutic advances and increased survival rates. In this study, a total of 116 differentially expressed genes (DEGs), including 11 upregulated genes and 105 downregulated genes, were screened from LSCC samples and compared with adjacent noncancerous...
February 2018: Medicine (Baltimore)
Charlotte Philippe, Arnout F Grégoir, Eli S J Thoré, Luc Brendonck, Gudrun De Boeck, Tom Pinceel
Aquatic organisms of inland waters are often subjected to a combination of stressors. Yet, few experiments assess mixed stress effects beyond a select group of standard model organisms. We studied the joint toxicity of reference toxicants and increased temperature on the turquoise killifish, Nothobranchius furzeri, a promising model for ecotoxicological research due to the species' short life cycle and the production of drought-resistant eggs. The acute sensitivity of the larval stage (2dph) to three compounds (cadmium, 3,4-dichloroaniline and chlorpyrifos) was tested in combination with a temperature increase of 4 °C, mimicking global warming...
April 2018: Environmental Science and Pollution Research International
S S Rudel, C Pietzonka, M Hoelzel, F Kraus
The reaction of uranium tetrachloride with anhydrous liquid hydrogen cyanide yields a turquoise microcrystalline powder of tetrachloridotetraformonitrileuranium(iv), [UCl4 (HCN)4 ]. We determined the crystal structure of this compound by powder neutron diffraction. The compound was further characterized by IR spectroscopy and thermogravimetric analysis as well as by magnetic measurements. The paramagnetic compound crystallizes in the tetragonal space group type I4[combining macron]. To the best of our knowledge this compound represents the first structurally elucidated uranium(iv) complex with HCN as a ligand...
January 31, 2018: Chemical Communications: Chem Comm
Rui Lin, Yufeng Wang, Kun Ji, Zhongyan Liu, Shuai Xiao, Dehua Zhou, Quanning Chen, Baomin Shi
Due to the lack of potential organs, hepatocellular transplantation has been considered for treating end-stage liver disease. Induced pluripotent stem cells (iPSCs) are reverted from somatic cells and are able to differentiate into hepatocytes. The present study aimed to investigate the mechanisms underlying iPSC differentiation to hepatocytes. GSE66076 was downloaded from the Gene Expression Omnibus; this database includes data from 3 undifferentiated (T0), 3 definitive endoderm (T5), and 3 early hepatocyte (T24) samples across hepatic‑directed differentiation of iPSCs...
March 2018: Molecular Medicine Reports
Martina Api, Piera Biondi, Ike Olivotto, Eva Terzibasi, Alessandro Cellerino, Oliana Carnevali
Studies on parental aging are a very attractive field, although it is poorly understood how parental age affects embryonic development and adult traits of the offspring. In this study, we used the turquoise killifish Nothobranchius furzeri, as is the vertebrate with shortest captive lifespan and an interesting model. The embryos of N. furzeri can follow two distinct developmental pathways either entering diapause or proceeding through direct development. Thus, this embryonic plasticity allows this model to be used to study different factors that could affect their embryonic development, including parental age...
April 2018: Zebrafish
Zongliang Yue, Itika Arora, Eric Y Zhang, Vincent Laufer, S Louis Bridges, Jake Y Chen
BACKGROUND: Much effort has been devoted to the discovery of specific mechanisms between drugs and single targets to date. However, as biological systems maintain homeostasis at the level of functional networks robustly controlling the internal environment, such networks commonly contain multiple redundant mechanisms designed to counteract loss or perturbation of a single member of the network. As such, investigation of therapeutics that target dysregulated pathways or processes, rather than single targets, may identify agents that function at a level of the biological organization more relevant to the pathology of complex diseases such as Parkinson's Disease (PD)...
December 28, 2017: BMC Bioinformatics
Johanna Heid, Chiara Cencioni, Roberto Ripa, Mario Baumgart, Sandra Atlante, Giuseppina Milano, Alessandro Scopece, Carsten Kuenne, Stefan Guenther, Valerio Azzimato, Antonella Farsetti, Giacomo Rossi, Thomas Braun, Giulio Pompilio, Fabio Martelli, Andreas M Zeiher, Alessandro Cellerino, Carlo Gaetano, Francesco Spallotta
The short-lived turquoise killifish Nothobranchius furzeri (Nfu) is a valid model for aging studies. Here, we investigated its age-associated cardiac function. We observed oxidative stress accumulation and an engagement of microRNAs (miRNAs) in the aging heart. MiRNA-sequencing of 5 week (young), 12-21 week (adult) and 28-40 week (old) Nfu hearts revealed 23 up-regulated and 18 down-regulated miRNAs with age. MiR-29 family turned out as one of the most up-regulated miRNAs during aging. MiR-29 family increase induces a decrease of known targets like collagens and DNA methyl transferases (DNMTs) paralleled by 5´methyl-cytosine (5mC) level decrease...
December 4, 2017: Scientific Reports
Jürgen K Rockstroh, Chloe Orkin, Rolando M Viani, David Wyles, Anne F Luetkemeyer, Adriano Lazzarin, Ruth Soto-Malave, Mark R Nelson, Sanjay R Bhagani, Hartwig H F Klinker, Giuliano Rizzardini, Pierre-Marie Girard, Cristina Tural, Nancy S Shulman, Niloufar Mobashery, Yiran B Hu, Linda M Fredrick, Tami Pilot-Matias, Roger Trinh, Edward Gane
BACKGROUND: Ombitasvir, paritaprevir with ritonavir, and dasabuvir (OBV/PTV/r ± DSV) ±ribavirin (RBV) are approved to treat hepatitis C virus (HCV) genotype 1 and 4 infection. Here, we investigate the safety and efficacy of OBV/PTV/r + DSV ±RBV for HCV genotype 1, and OBV/PTV/r + RBV for HCV genotype 4, in human immunodeficiency virus (HIV)-1 coinfected patients with or without compensated cirrhosis. METHODS: TURQUOISE-I, Part 2 is a phase 3 multicenter study...
2017: Open Forum Infectious Diseases
Huan-Shen Liu, Wei-Chieh Chang, Chin-Yen Chou, Bo-Cheng Pan, Yi-Shan Chou, Guey-Sheng Liou, Cheng-Liang Liu
Thermally stable TPA-OMe polyamide films with high transmittance modulation in response to applied potential are formed by facile ultrasonic spray-coating. Four processing conditions (Film A, Film B, Film C and Film D) through tuning both solution concentrations and deposition temperatures can be utilized for the formation of wet and dry deposited films with two film thickness intervals. The electrochromic results show that the dry deposited rough films at higher deposition temperature generally reveal a faster electrochromic response, lower charge requirements (Q) and less conspicuous color changes (smaller optical density change (ΔOD) and lightness change (ΔL*)) during the oxidation process as compared to the wet deposited smooth films at lower deposition temperature...
September 20, 2017: Scientific Reports
Lijuan Bo, Bo Wei, Zhanfeng Wang, Daliang Kong, Zheng Gao, Zhuang Miao
BACKGROUND This study aimed to identify more potential genes and miRNAs associated with the pathogenesis of intracranial aneurysms (IAs). MATERIAL AND METHODS The dataset of GSE36791 (accession number) was downloaded from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) were screened for in the blood samples from patients with ruptured IAs and controls, followed by functional and pathway enrichment analyses. In addition, gene co-expression network was constructed and significant modules were extracted from the network by WGCNA R package...
September 20, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
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