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https://www.readbyqxmd.com/read/28727933/genotype-specific-acquisition-evolution-and-adaptation-of-characteristic-mutations-in-hepatitis-e-virus
#1
Aqsa Ikram, Mohamad S Hakim, Jian-Hua Zhou, Wenshi Wang, Maikel P Peppelenbosch, Qiuwei Pan
Hepatitis E virus (HEV) infection is a major cause of acute hepatitis but also provokes chronic infection in immunocompromised patients. Although the pathogenesis and treatment outcome involve complex interplay between the virus and host, the nature of adaptive responses of HEV to the host immune system remain obscure at best. In this study, we employed large-scale proteomic bioinformatics to profile characteristic mutations in human HEV isolates associated to ribavirin treatment failure, chronic hepatitis, hepatic failure or altered immunoreactivity...
July 20, 2017: Virulence
https://www.readbyqxmd.com/read/28724761/isg15-modulates-type-i-interferon-signaling-and-antiviral-response-during-hepatitis-e-virus-replication
#2
Harini Sooryanarain, Adam J Rogers, Dianjun Cao, Mary Etna R Haac, Yogesh A Karpe, Xiang-Jin Meng
Hepatitis E virus (HEV), a single-stranded positive-sense RNA virus, generally causes a self-limiting acute viral hepatitis, although chronic HEV infection has recently become a significant clinical problem in immunocompromised individuals especially in solid organ transplant recipients. Innate immunity, via type-I interferon (IFN) response, plays an important role during initial stages of a viral infection. ISG15, an IFN-induced ubiquitin-like protein, is known to have an immunomodulatory role, as well as can impart a direct antiviral effect against a wide spectrum of virus families...
July 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28721632/detection-and-characterization-of-three-zoonotic-viruses-in-wild-rodents-and-shrews-from-shenzhen-city-china
#3
Bo Wang, Chun-Lin Cai, Bei Li, Wei Zhang, Yan Zhu, Wei-Hong Chen, Fei Zhuo, Zheng-Li Shi, Xing-Lou Yang
Diverse species of rodents and shrews, which are abundant worldwide, harbor a variety of viruses; some of these are closely related to human viruses and possess zoonotic potential. Previously studies have demonstrated that the mammarenavirus and hantavirus carried by rodents or shrews could cause diseases in human population. To determine the distribution of zoonotic viruses in Shenzhen city, the major city in southern China with a high population density, we analyzed 225 rodents (Rattus norvegicus and Rattus flavipectus) and 196 shrews (Suncus murinus) from urban and rural districts for the presence of mammarenavirus, hantavirus, and hepatitis E virus (HEV) by RT-PCR targeting the conserved regions...
July 17, 2017: Virologica Sinica
https://www.readbyqxmd.com/read/28721353/hepatitis-e-virus-associated-meningoencephalitis-in-a-lung-transplant-recipient-diagnosed-by-clinical-metagenomic-sequencing
#4
Jamie A Murkey, Kara W Chew, Margrit Carlson, Chelsea L Shannon, Deepika Sirohi, Hannah A Sample, Michael R Wilson, Paul Vespa, Romney M Humphries, Steve Miller, Jeffrey D Klausner, Charles Y Chiu
Hepatitis E virus (HEV) infection uncommonly causes chronic hepatitis and neurologic disease. We describe a case of genotype 3a HEV meningoencephalitis diagnosed by metagenomic next-generation sequencing, illustrating the power of an unbiased molecular approach to microbial testing and the first reported case of HEV infection presumably acquired through lung transplantation.
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28719323/burden-and-seasonality-of-viral-acute-respiratory-tract-infections-among-outpatients-in-southern-sri-lanka
#5
David Shapiro, Champica K Bodinayake, Ajith Nagahawatte, Vasantha Devasiri, Ruvini Kurukulasooriya, Jeremy Hsiang, Bradley Nicholson, Aruna Dharshan De Silva, Truls Østbye, Megan E Reller, Christopher W Woods, L Gayani Tillekeratne
In tropical and subtropical settings, the epidemiology of viral acute respiratory tract infections varies widely between countries. We determined the etiology, seasonality, and clinical presentation of viral acute respiratory tract infections among outpatients in southern Sri Lanka. From March 2013 to January 2015, we enrolled outpatients presenting with influenza-like illness (ILI). Nasal/nasopharyngeal samples were tested in duplicate using antigen-based rapid influenza testing and multiplex polymerase chain reaction (PCR) for respiratory viruses...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719276/high-hepatitis-e-seroprevalence-among-displaced-persons-in-south-sudan
#6
Andrew S Azman, Malika Bouhenia, Anita S Iyer, John Rumunu, Richard Lino Laku, Joseph F Wamala, Isabel Rodriguez-Barraquer, Justin Lessler, Etienne Gignoux, Francisco J Luquero, Daniel T Leung, Emily S Gurley, Iza Ciglenecki
AbstractLarge protracted outbreaks of hepatitis E virus (HEV) have been documented in displaced populations in Africa over the past decade though data are limited outside these exceptional settings. Serological studies can provide insights useful for improving surveillance and disease control. We conducted an age-stratified serological survey using samples previously collected for another research study from 206 residents of an internally displaced person camp in Juba, South Sudan. We tested serum for anti-HEV antibodies (IgM and IgG) and estimated the prevalence of recent and historical exposure to the virus...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28718943/hepatitis-e-virus-orf-1-induces-proliferative-and-functional-t-cell-responses-in-patients-with-ongoing-and-resolved-hepatitis-e
#7
Jana Al-Ayoubi, Patrick Behrendt, Birgit Bremer, Pothakamuri Venkata Suneetha, Anett Gisa, Franziska Rinker, Michael P Manns, Markus Cornberg, Heiner Wedemeyer, Anke R M Kraft
BACKGROUND AND AIMS: Hepatitis E virus (HEV) is a major cause of acute viral hepatitis with > 3 million symptomatic cases per year accounting for 70,000 HEV-related deaths. HEV-specific T-cell responses have been investigated against structural proteins expressed by open reading frames (ORF) 2 and 3. T-cell responses against non-structural HEV proteins encoded by ORF1 are hardly studied. The aim of this study was to determine HEV ORF1-specific T-cell responses in comparison to ORF2/3 in patients exposed to HEV...
July 18, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28714127/high-hepatitis-e-virus-antibody-positive-rates-in-dogs-and-humans-exposed-to-dogs-in-the-south-west-of-china
#8
M Y Zeng, H Gao, X X Yan, W J Qu, Y K Sun, G W Fu, Y L Yan
Hepatitis E (HE) is a zoonotic viral disease caused by hepatitis E virus (HEV). The objective of this study was to investigate the prevalence of HEV infection among dogs and humans exposed to dogs in the south-west region of China. A total of 4,490 dog serum samples and 2,206 relative practitioner serum samples were collected from 18 pet hospitals and dog farms in Yunnan, Sichuan and Guizhou province, and the anti-HEV IgG antibodies were detected by ELISA. The results showed that the total positive rate of anti-HEV antibodies was 36...
July 16, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28693081/-a-sero-epidemiological-study-of-hepatitis-e-among-general-population-in-shandong-province-of-china-in-2014
#9
B Y Yan, L Zhang, J J Lyu, Y Feng, J Y Liu, W L Wu, L Z Song, A Q Xu
Objective: To analyze the sero-epidemiological characteristics of hepatitis E virus (HEV) in Shandong province, and thereby to provide evidence for the policy-making of hepatitis E prevention and control. Methods: The inhabitants aged between 1-59 years old were randomly selected to participate in the study by two-stage stratified random sampling method from 12 counties in Shandong province in October, 2014. Firstly two townships were selected from each county by probability proportional to size sampling (PPS) method...
July 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28692890/porcine-blood-used-as-ingredient-in-meat-productions-may-serve-as-a-vehicle-for-hepatitis-e-virus-transmission
#10
Ingeborg L A Boxman, Claudia C C Jansen, Geke Hägele, Ans Zwartkruis-Nahuis, Jeroen Cremer, Harry Vennema, Aloys S L Tijsma
The aim of the present study was to investigate whether the use of porcine blood(products) in food could be a risk for a hepatitis E virus (HEV) infection. HEV RNA was detected in 33/36 batches of (non-heated) liquid products and in 7/24 spray dried powder products. Contamination levels varied among the products, but were highest in liquid whole blood, plasma and fibrinogen reaching levels of 2.2×10(2) to 2.8×10(2) HEV genome copies per 0.2g. Sequence analyses revealed genotype 3 strains, of which two were 100% (493nt) identical to recently diagnosed HEV cases, although no direct epidemiological link was established...
June 28, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28692547/seroprevalence-of-hepatitis-e-virus-in-hiv-infected-patients-in-china
#11
Hang Zeng, Lin Wang, Peng Liu, Lingjie Liao, Ling Wang, Yiming Shao
: The seroprevalence of hepatitis E virus (HEV) in HIV-infected patients in China has never been reported. Thus, anti-HEV in HIV-infected patients recruited in five provinces in China was tested. The seroprevalence of HEV was 39.7%, which was higher than that in the general population (23.5%). HEV infection might be a frequent cause of hepatitis in HIV-infected patients.
July 7, 2017: AIDS
https://www.readbyqxmd.com/read/28691422/hepatitis-e-virus-antibodies-in-hiv-infected-patients-and-blood-donors-from-western-poland-a-preliminary-report
#12
Maciej Bura, Alicja Bukowska, Aleksandra Bura, Michał Michalak, Iwona Mozer-Lisewska
BACKGROUND: Hepatitis E virus (HEV) infection is an emerging problem in industrialized countries, including Europe. A few data exist on HEV seroprevalence in Poland. OBJECTIVES: The aim of this study was to assess the prevalence of anti-HEV IgG antibodies in Polish patients infected with human immunodeficiency virus (HIV) and blood donors. MATERIAL AND METHODS: Two hundred and ten individuals (n=105 of HIV-infected patients and n=105 of ageand sex-matched blood donors from the same area; 178 men and 32 women), aged 18-50 (median age: 38 years), were tested for the presence of anti-HEV IgG antibodies with the EUROIMMUN Anti-Hepatitis E Virus (HEV) ELISA (IgG) tests (Luebeck, Germany)...
June 27, 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28690036/hev-and-transfusion-recipient-risk
#13
J Izopet, S Lhomme, S Chapuy-Regaud, J-M Mansuy, N Kamar, F Abravanel
HEV infections are mainly food- and water-borne but transfusion-transmission has occurred in both developing and developed countries. The infection is usually asymptomatic but it can lead to fulminant hepatitis in patients with underlying liver disease and pregnant women living in developing countries. It also causes chronic hepatitis E, with progressive fibrosis and cirrhosis, in approximately 60% of immunocompromised patients infected with HEV genotype 3. The risk of a transfusion-transmitted HEV infection is linked to the frequency of viremia in blood donors, the donor virus load and the volume of plasma in the final transfused blood component...
July 6, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28688980/hepatitis-e-virus-seroprevalence-rate-among-eastern-mediterranean-and-middle-eastern-countries-a-systematic-review-and-pooled-analysis
#14
REVIEW
Mohammad Hadi Karbalaie Niya, Mohammad Saeid Rezaee-Zavareh, Alireza Ranaei, Seyed Moayed Alavian
CONTEXT: Hepatitis E virus (HEV) as a hepatotropic virus is one of the major global health concerns. Autochthonous HEV transmitted by oral fecal-route in poor sanitation conditions as well as vertical and rarely blood transfusion. HEV occurrence is more common in developing countries and recently increased in developed countries too. Middle East (ME) and Eastern Mediterranean region (EMR) of WHO have been an endemic region for HEV infection. In this regard, we aimed to design a systematic review and pooled analysis to determine seroprevalence of anti-HEV antibody in ME and EMR countries...
July 5, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28686042/the-hepatitis-e-virus-nonstructural-polyprotein
#15
Mohammad Khalid Parvez
Hepatitis E virus (HEV) is a globally important pathogen of acute and chronic hepatitis in humans. The HEV ORF1 gene encodes a nonstructural polyprotein, essential for RNA replication and virus infectivity. Expression and processing of ORF1 polyprotein are shown in prokaryotic and eukaryotic systems, however, its proteolysis into individual proteins is still debated. While molecular or biochemical characterization of methyltransferase, protease, hypervariable region, helicase and RNA polymerase domains in ORF1 has been achieved, the role of the X and Y domains in the HEV life cycle has only been demonstrated very recently...
July 7, 2017: Future Microbiology
https://www.readbyqxmd.com/read/28680971/hendra-and-nipah-virus-infection-in-cultured-human-olfactory-epithelial-cells
#16
Viktoriya Borisevich, Mehmet Hakan Ozdener, Bilal Malik, Barry Rockx
Henipaviruses are emerging zoonotic viruses and causative agents of encephalitis in humans. However, the mechanisms of entry into the central nervous system (CNS) in humans are not known. Here, we evaluated the possible role of olfactory epithelium in virus entry into the CNS. We characterized Hendra virus (HeV) and Nipah virus (NiV) infection of primary human olfactory epithelial cultures. We show that henipaviruses can infect mature olfactory sensory neurons. Henipaviruses replicated efficiently, resulting in cytopathic effect and limited induction of host responses...
May 2017: MSphere
https://www.readbyqxmd.com/read/28679623/high-but-not-low-exercise-volume-shifts-the-balance-of-renin-angiotensin-system-towards-ace2-mas-receptor-axis-in-skeletal-muscle-in-obese-rats
#17
Eliete Dalla Corte Frantz, Isabele Gomes Giori, Marcus Vinícius Machado, D'Angelo Carlo Magliano, Fernanda Marques Freitas, Mariana Sodré Boêta Andrade, Aline Bomfim Vieira, Antonio Claudio Lucas Claudio Lucas da Nóbrega, Eduardo Tibirica
Metabolic Syndrome (MS) is a cluster of metabolic risk factors which is linked to central obesity, elevated blood pressure, insulin resistance (IR) and dyslipidemia, where the rennin-angiotensin system (RAS) may provide a link among them. This study aimed to evaluate volume exercise effects comparing low versus high volume of chronic aerobic exercise on RAS axes in skeletal muscle in a diet-induced obesity (DIO) rat model. For this, male Wistar-Kyoto rats were fed a standard chow diet (SC) or a high-fat diet (HF) for 32 weeks...
July 5, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28670851/serological-evidence-of-hepatitis-e-virus-infection-in-pigs-and-jaundice-among-pig-handlers-in-bangladesh
#18
N Haider, M S U Khan, M B Hossain, H M S Sazzad, M Z Rahman, F Ahmed, N S Zeidner
Hepatitis E virus (HEV) is the most common cause of viral hepatitis in humans. Pigs may act as a reservoir of HEV, and pig handlers were frequently identified with a higher prevalence of antibodies to HEV. The objectives of this study were to identify evidence of HEV infection in pigs and compare the history of jaundice between pig handlers and people not exposed to pigs and pork. Blood and faecal samples were collected from 100 pigs derived from three slaughterhouses in the Gazipur district of Bangladesh from January to June, 2011...
July 2, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28665157/sex-related-differences-in-autoimmune-induced-lung-lesions-in-mrl-mpj-fas-lpr-mice-are-mediated-by-the-development-of-mediastinal-fat-associated-lymphoid-clusters
#19
Yaser Hosny Ali Elewa, Osamu Ichii, Yasuhiro Kon
MRL/MpJ-Fas(lpr) (lpr) mice are a model for autoimmune diseases such as systemic lupus erythematosus (SLE). These diseases mainly affect women, with a 10:1 female-to-male ratio, and cause pleuropulmonary lesions. We previously revealed a correlation between mediastinal fat-associated lymphoid cluster (MFALC) development and cellular infiltration in the lungs of lpr male mice; however, we did not report on MFALCs in females. The purpose of this investigation was to reveal sex-related differences in MFALCs in lpr mice...
June 30, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28663684/what-is-the-risk-of-graft-reinfection-in-case-of-liver-transplantation-for-patients-with-acute-hev-or-hav-infection
#20
Anil C Anand, Neerav Goyal, Hitendra K Garg, Shaleen K Agarwal, Sudeep Khanna, Subhash Gupta
No abstract text is available yet for this article.
June 2017: Journal of Clinical and Experimental Hepatology
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