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Hepatitis E virus

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https://www.readbyqxmd.com/read/27902714/evaluation-of-the-activity-of-lamivudine-and-zidovudine-against-ebola-virus
#1
Yu Cong, Julie Dyall, Brit J Hart, Lisa Evans DeWald, Joshua C Johnson, Elena Postnikova, Huanying Zhou, Robin Gross, Oscar Rojas, Isis Alexander, Nicole Josleyn, Tengfei Zhang, Julia Michelotti, Krisztina Janosko, Pamela J Glass, Mike Flint, Laura K McMullan, Christina F Spiropoulou, Tim Mierzwa, Rajarshi Guha, Paul Shinn, Sam Michael, Carleen Klumpp-Thomas, Crystal McKnight, Craig Thomas, Ann E Eakin, Kathleen G O'Loughlin, Carol E Green, Paul Catz, Jon C Mirsalis, Anna N Honko, Gene G Olinger, Richard S Bennett, Michael R Holbrook, Lisa E Hensley, Peter B Jahrling
In the fall of 2014, an international news agency reported that patients suffering from Ebola virus disease (EVD) in Liberia were treated successfully with lamivudine, an antiviral drug used to treat human immunodeficiency virus-1 and hepatitis B virus infections. According to the report, 13 out of 15 patients treated with lamivudine survived and were declared free from Ebola virus disease. In this study, the anti-Ebola virus (EBOV) activity of lamivudine and another antiretroviral, zidovudine, were evaluated in a diverse set of cell lines against two variants of wild-type EBOV...
2016: PloS One
https://www.readbyqxmd.com/read/27899274/systematic-identification-of-hepatitis-e-virus-orf2-interactome-reveals-that-tmem134-engages-in-orf2-mediated-nf-%C3%AE%C2%BAb-pathway
#2
Yabin Tian, Weijin Huang, Jun Yang, Zhiheng Wen, Yansheng Geng, Chenyan Zhao, Heqiu Zhang, Youchun Wang
Hepatitis E virus (HEV) is the causative agent of acute hepatitis E. Open reading frame 2 (ORF2) encodes the capsid protein of HEV, which is the main structural protein and may participate, together with the host factors, in viral entry and egress. However, it is still not clear which host proteins are involved in the interaction with ORF2 and what the functions of these ORF2-interacting proteins are. In this study, we have applied a split-ubiquitin yeast two-hybrid screening approach in combination with the pull-down and coimmunoprecipitation assays, identified and validated multiple interacting partners of ORF2 of genotype 1 and 4, which have diverse biological functions...
November 26, 2016: Virus Research
https://www.readbyqxmd.com/read/27898592/the-hepatitis-c-virus-nonstructural-protein-3-q80k-polymorphism-is-frequently-detected-and-transmitted-among-hiv-infected-msm-in-the-netherlands
#3
Astrid M Newsum, Cynthia K Y Ho, Faydra I Lieveld, Thijs J W van de Laar, Sylvie M Koekkoek, Sjoerd P Rebers, Jan T M van der Meer, Anne M J Wensing, Greet J Boland, Joop E Arends, Karel J van Erpecum, Maria Prins, Richard Molenkamp, Janke Schinkel
OBJECTIVES: The Q80K polymorphism is a naturally occurring resistance-associated variant in the hepatitis C virus (HCV) nonstructural protein 3 (NS3) region and is likely transmissible between hosts. This study describes the Q80K origin and prevalence among HCV risk groups in the Netherlands and examines whether Q80K is linked to specific transmission networks. DESIGN AND METHODS: Stored blood samples from HCV genotype 1a-infected patients were used for PCR and sequencing to reconstruct the NS3 maximum likelihood phylogeny...
January 2, 2017: AIDS
https://www.readbyqxmd.com/read/27896822/simeprevir-in-combination-with-sofosbuvir-in-treatment-na%C3%A3-ve-and-experienced-patients-with-hepatitis-c-virus-genotype-4-infection-a-phase-iii-open-label-single-arm-study-pluto
#4
M Buti, J L Calleja, S Lens, M Diago, E Ortega, J Crespo, R Planas, M Romero-Gómez, F G Rodríguez, J M Pascasio, B Fevery, D Kurland, C Corbett, R Kalmeijer, W Jessner
BACKGROUND: Hepatitis C virus (HCV) infection is a leading cause of liver cirrhosis and subsequent hepatocellular carcinoma. HCV genotype 4 is found widely in the Middle East, Egypt and Africa, and has also spread into Europe. There are limited data available regarding the use of direct-acting antiviral agents in HCV genotype 4-infected patients with cirrhosis. AIM: The Phase III, open-label, single-arm PLUTO study evaluated the efficacy and safety of 12 weeks of simeprevir (HCV NS3/4A protease inhibitor) plus sofosbuvir (HCV nucleotide-analogue NS5B polymerase inhibitor) in treatment-naïve and (peg)interferon ± ribavirin-experienced HCV genotype 4-infected patients, with or without compensated cirrhosis...
November 29, 2016: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27895405/impact-of-il28b-and-oas-gene-family-polymorphisms-on-interferon-treatment-response-in-caucasian-children-chronically-infected-with-hepatitis-b-virus
#5
Krzysztof Domagalski, Małgorzata Pawłowska, Agnieszka Zaleśna, Małgorzata Pilarczyk, Paweł Rajewski, Waldemar Halota, Andrzej Tretyn
AIM: To investigate the impact of IL28B and OAS gene polymorphisms on interferon treatment responses in children with chronic hepatitis B. METHODS: We enrolled 52 children (between the ages of 4 and 18) with hepatitis B e antigen-negative chronic hepatitis B (CHB), who were treated with pegylated interferon alfa for 48 wk. Single nucleotide polymorphisms in the OAS1 (rs1131476), OAS2 (rs1293747), OAS3 (rs2072136), OASL (rs10849829) and IL28B (rs12979860, rs12980275 and rs8099917) genes were studied to examine their associations with responses to IFN treatment in paediatric patients...
November 7, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27894309/analysis-of-long-noncoding-rna-expression-in-hepatocellular-carcinoma-of-different-viral-etiology
#6
Quan Zhang, Kentaro Matsuura, David E Kleiner, Fausto Zamboni, Harvey J Alter, Patrizia Farci
BACKGROUND: Dysregulation of long noncoding RNA (lncRNA) expression contributes to the pathogenesis of many human diseases, including liver diseases. Several lncRNAs have been reported to play a role in the development of hepatocellular carcinoma (HCC). However, most studies have analyzed lncRNAs only in hepatitis B virus (HBV)-related HCC or in a single group of HCC patients regardless of the viral etiology. METHODS: To investigate whether lncRNAs are differentially expressed in HCC of different viral etiology, we profiled 101 disease-related lncRNAs, including 25 lncRNAs previously associated with HCC, in liver specimens obtained from well-characterized patients with HBV-, hepatitis C virus (HCV)-, or hepatitis D virus (HDV)-associated HCC...
November 28, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27893287/hepatitis-e-virus-in-wild-boar-in-northwest-poland-sensitivity-of-methods-of-detection
#7
Samart Dorn-In, Karin Schwaiger, Magdalena Twarużek, Jan Grajewski, Christoph Gottschalk, Manfred Gareis
In northwest Poland, 163 blood and 53 fecal samples of wild boars were collected in winter 2012/13 and 2013/14. All blood samples were tested for the presence of hepatitis E virus (HEV) ribonucleic acid (RNA) by two reverse transcription-polymerase chain reaction (RT-PCR) based methods and by anti-HEV IgG enzyme-linked immunosorbent assay (ELISA). About 17.2% of blood samples were seropositive. One-step nested RT-PCR turned out to be too insensitive (11.6% were positive). Therefore a two-step nested RT-PCR was applied where 25...
November 28, 2016: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/27892500/four-translation-initiation-pathways-employed-by-the-leaderless-mrna-in-eukaryotes
#8
Kseniya A Akulich, Dmitry E Andreev, Ilya M Terenin, Victoria V Smirnova, Aleksandra S Anisimova, Desislava S Makeeva, Valentina I Arkhipova, Elena A Stolboushkina, Maria B Garber, Maria M Prokofjeva, Pavel V Spirin, Vladimir S Prassolov, Ivan N Shatsky, Sergey E Dmitriev
mRNAs lacking 5' untranslated regions (leaderless mRNAs) are molecular relics of an ancient translation initiation pathway. Nevertheless, they still represent a significant portion of transcriptome in some taxons, including a number of eukaryotic species. In bacteria and archaea, the leaderless mRNAs can bind non-dissociated 70 S ribosomes and initiate translation without protein initiation factors involved. Here we use the Fleeting mRNA Transfection technique (FLERT) to show that translation of a leaderless reporter mRNA is resistant to conditions when eIF2 and eIF4F, two key eukaryotic translation initiation factors, are inactivated in mammalian cells...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27891290/a-comparative-study-of-assay-performance-of-commercial-hepatitis-e-virus-enzyme-linked-immunosorbent-assay-kits-in-australian-blood-donor-samples
#9
Ashish C Shrestha, Robert L P Flower, Clive R Seed, Susan L Stramer, Helen M Faddy
Hepatitis E virus (HEV) is transfusion-transmissible and therefore poses a risk to blood transfusion safety. Seroprevalence studies are useful for estimating disease burden and determining risk factors. Considerable variability in the sensitivity of HEV antibody detection assays exists. This study aimed to compare the performances of commercially available HEV enzyme-linked immunosorbent assays (ELISA) in Australian blood donor samples. Plasma samples that tested positive (n = 194) or negative (n = 200) for HEV IgG (Wantai HEV IgG ELISA) were selected...
2016: Journal of Blood Transfusion
https://www.readbyqxmd.com/read/27890632/evidence-of-genotypes-1-and-3-of-avian-hepatitis-e-virus-in-wild-birds
#10
Xinquan Zhang, Ivana Bilic, Salome Troxler, Michael Hess
Although the presence of four genotypes of avian hepatitis E virus (HEV) in chickens has been demonstrated, its natural host range is still barely known. In this study, swab samples from 626 wild birds originating from 62 bird species were investigated for HEV detection by molecular METHODS: The aim was to explore the cross-species infection of avian HEV and to compare the genetic diversity between strains infecting chicken and wild birds. In total, 8 positive samples from 4 different bird species (song thrush, little owl, feral pigeon and common buzzard) were identified and further confirmed by partial sequencing of ORF3...
November 24, 2016: Virus Research
https://www.readbyqxmd.com/read/27887586/hepatitis-e-virus-seroepidemiology-a-post-earthquake-study-among-blood-donors-in-nepal
#11
Ashish C Shrestha, Robert L P Flower, Clive R Seed, Manita Rajkarnikar, Shrawan K Shrestha, Uru Thapa, Veronica C Hoad, Helen M Faddy
BACKGROUND: As one of the causative agents of viral hepatitis, hepatitis E virus (HEV) has gained public health attention globally. HEV epidemics occur in developing countries, associated with faecal contamination of water and poor sanitation. In industrialised nations, HEV infections are associated with travel to countries endemic for HEV, however, autochthonous infections, mainly through zoonotic transmission, are increasingly being reported. HEV can also be transmitted by blood transfusion...
November 25, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27885811/17-%C3%AE-estradiol-inhibits-hepatitis-c-virus-mainly-by-interference-with-the-release-phase-of-its-life-cycle
#12
Andrea Magri, Matteo N Barbaglia, Chiara Z Foglia, Elisa Boccato, Michela E Burlone, Sarah Cole, Paola Giarda, Elena Grossini, Arvind H Patel, Rosalba Minisini, Mario Pirisi
BACKGROUND & AIMS: Oestrogen and oestrogen-mediated signalling protect from hepatitis C virus through incompletely understood mechanisms. We aimed to ascertain which phase(s) of hepatitis C virus life cycle is/are affected by oestrogens. METHODS: Huh7 cells infected with the JFH1 virus (genotype 2a) were exposed to dehydroepiandrosterone, testosterone, progesterone and 17β-estradiol (tested with/without its receptor antagonist fulvestrant). Dose-response curves were established to calculate half maximal inhibitory concentration values...
November 7, 2016: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/27885753/prognosis-of-1169-hepatitis-c-chronically-infected-patients-with-decompensated-cirrhosis-in-the-predirect-acting-antiviral%C3%A2-era
#13
S A McDonald, H A Innes, E Aspinall, P C Hayes, M Alavi, H Valerio, D J Goldberg, S J Hutchinson
At a population level, little is known regarding the risk of liver- and nonliver-related mortality and hospitalization and the development of hepatocellular carcinoma (HCC) in hepatitis C virus (HCV)-infected patients with decompensated cirrhosis (DC). This large-scale national record-linkage study estimates these outcomes following first hospital admission for DC. Record-linkages between national HCV diagnosis and clinical databases and the national inpatient hospital episode database and mortality register were conducted to follow-up the disease course of all identified HCV-diagnosed and chronically infected persons...
November 25, 2016: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27885564/hepatitis-e-virus-infection-in-patients-on-dialysis-and-in-solid-organ-transplant-recipients-in-argentina-exploring-associated-risk-factors
#14
María Belén Pisano, Domingo Balderramo, Maribel Martínez Wassaf, Martín Lotto, Yanina Carlino, Viviana Elizabeth Ré, José D Debes
Infection with hepatitis E virus (HEV) leads to acute hepatitis infection in immunocompetent hosts. HEV genotype 3 can present with high frequency and lead to chronic infection in individuals with a compromised immune system. The risk factors related to increased seroprevalence or chronicity in this population are not entirely understood. Moreover, most studies addressing risk factors for HEV in non-endemic areas come from developed areas such as North America and Europe. In this study we evaluated seroprevalence, chronicity and risk factors for HEV in 120 transplant recipients and 88 patients on dialysis in Argentina...
November 25, 2016: Archives of Virology
https://www.readbyqxmd.com/read/27882706/high-frequency-of-potential-interactions-between-direct-acting-antivirals-and-concomitant-therapy-in-hiv-hepatitis-c-virus-coinfected-patients-in-clinical-practice
#15
J Macías, P Monge, M Mancebo, N Merchante, K Neukam, L M Real, J A Pineda
OBJECTIVES: The aim of the study was to analyse the frequency and degree of potential drug-drug interactions (DDIs) between direct-acting antivirals (DAAs) and concomitant medication used by HIV/hepatitis C virus (HCV)-coinfected patients, including antiretroviral therapy (ART) and other drugs. METHODS: All patients with HIV infection and viraemic HCV genotype 1, 3 or 4 coinfection attending a tertiary care centre in Spain (November 2014 to November 2015) were included in the study...
November 24, 2016: HIV Medicine
https://www.readbyqxmd.com/read/27882682/prevalence-of-equine-hepacivirus-infections-in-france-and-evidence-for-two-viral-subtypes-circulating-worldwide
#16
S Pronost, E Hue, C Fortier, M Foursin, G Fortier, F Desbrosse, F A Rey, P-H Pitel, E Richard, B Saunier
Like hepatitis C virus (HCV) in humans, the newly identified equine hepacivirus (NPHV) displays a predominating liver tropism that may evolve into chronic infections. The genomes of the two viruses share several organizational and functional features and are phylogenetically closest amongst the Hepacivirus genus. A limited amount of data is available regarding the spread of hepacivirus infections in horses. In this study, we asked whether in a more representative sample the prevalence and distribution of NPHV infections in France would resemble that reported so far in other countries...
November 24, 2016: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/27882509/what-s-important-to-the-patient-informational-needs-of-patients-making-decisions-about-hepatitis-c-treatment
#17
Donna M Evon, Carol E Golin, Teodora Stoica, Rachel E Jones, Sarah J Willis, Joseph Galanko, Michael W Fried
BACKGROUND AND OBJECTIVES: Multiple treatment options with direct-acting antivirals are now available for hepatitis C virus (HCV). Study aims were to understand (1) the informational topics patients want to have to make informed treatment decisions; (2) the importance patients place on each topic; and (3) the topics patients prioritize as most important. METHODS: We used a mixed-methods study of two samples recruited from an academic liver center. Participants were not currently on treatment...
November 23, 2016: Patient
https://www.readbyqxmd.com/read/27880997/efficacy-of-switching-from-adefovir-to-tenofovir-in-chronic-hepatitis-b-patients-who-exhibit-suboptimal-responses-to-adefovir-based-combination-rescue-therapy-due-to-resistance-to-nucleoside-analogues-satis-study
#18
Hye Won Lee, Jun Yong Park, Beom Kyung Kim, Moon Young Kim, Jung Il Lee, Young Suk Kim, Ki Tae Yoon, Kwang-Hyub Han, Sang Hoon Ahn
Background/Aims: It remains to be determined whether switching from adefovir (ADV) to tenofovir (TDF) provides better virological outcomes in patients exhibiting suboptimal responses to ADV plus nucleoside analogue (ADV+NA) therapy for NA-resistant chronic hepatitis B (CHB). Methods: In this prospective trial, patients who showed partial responses (defined as serum hepatitis B virus [HBV] DNA >60 IU/mL) to ADV+NA therapy for NA resistance were randomly allocated to receive TDF plus NA (TDF+NA group, n=16) or to continue their current therapy (ADV+NA group, n=16)...
November 25, 2016: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/27878906/simeprevir-daclatasvir-and-sofosbuvir-for-hepatitis-c-virus-infected-patients-with-decompensated-liver-disease
#19
E Lawitz, F Poordad, J A Gutierrez, T N Kakuda, G Picchio, G Beets, A Vandevoorde, P Van Remoortere, B Jacquemyn, D Luo, S Ouwerkerk-Mahadevan, L Vijgen, V Van Eygen, M Beumont
Approximately three million individuals in the United States are chronically infected with hepatitis C virus (HCV). Chronic HCV infection may lead to the development of compensated as well as decompensated liver cirrhosis. The Phase II IMPACT study was conducted in HCV genotype 1- or 4-infected cirrhotic patients with portal hypertension or decompensated liver disease and assessed for the first time the combination of the three direct-acting antivirals simeprevir, daclatasvir and sofosbuvir. Treatment-naïve or treatment-experienced adults with Child-Pugh (CP) score <7 (CP A) and evidence of portal hypertension, or CP score 7-9 (CP B), received 12 weeks of simeprevir 150 mg, daclatasvir 60 mg and sofosbuvir 400 mg, once daily...
November 23, 2016: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27878521/dual-labeled-time-resolved-immunofluorometric-assay-for-the-simultaneous-quantitative-detection-of-hepatitis-b-virus-antigens-in-human-serum
#20
Rong-Liang Liang, Yun-Sen Yang, Jian-Wei Zhou, Tian-Cai Liu, Xu-Ping Xu, Qian-Ni Liang, Zhen-Hua Chen, Zhi-Ning Dong, Ying-Song Wu
In this paper, a novel time-resolved fluorescence immunoassay (TRFIA) is described that allows the simultaneous quantitative detection of hepatitis B virus surface antigen (HBsAg) and hepatitis B e antigen (HBeAg) in human serum to aid the diagnosis and monitoring of hepatitis B virus infection. The proposed method was developed based on a two-step sandwich immunoassay protocol in which monoclonal antibodies against HBsAg and HBeAg were co-coated in 96 microtitration wells, then tracer polyclonal antibodies against HBsAg labeled with samarium and tracer monoclonal antibodies against HBeAg labeled with europium chelates were used for detection...
November 22, 2016: Journal of Fluorescence
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