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hepatitis e virus and chicken

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https://www.readbyqxmd.com/read/27890632/evidence-of-genotypes-1-and-3-of-avian-hepatitis-e-virus-in-wild-birds
#1
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 25, 2016: Virus Research
https://www.readbyqxmd.com/read/27876615/a-novel-avian-like-hepatitis-e-virus-in-wild-aquatic-bird-little-egret-egretta-garzetta-in-hungary
#2
Gábor Reuter, Ákos Boros, Róbert Mátics, Beatrix Kapusinszky, Eric Delwart, Péter Pankovics
Hepatitis E virus (HEV), family Hepeviridae, has public health concerns because of its zoonotic potential; however, the host species spectrum, animal to animal transmissions, the natural chain of hepevirus infections and the genetic diversity of HEV in wildlife especially in birds are less known. Using random amplification and next generation sequencing technology a genetically divergent avian HEV was serendipitously identified in wild bird in Hungary. HEV RNA was detected with high faecal viral load (1.33×10(8)genomiccopies/ml) measured by real-time PCR in faecal sample from a little egret (Egretta garzetta)...
December 2016: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/27876045/seroprevalence-of-avian-hepatitis-e-virus-and-avian-leucosis-virus-subgroup-j-in-chicken-flocks-with-hepatitis-syndrome-china
#3
Yani Sun, Taofeng Du, Baoyuan Liu, Shahid Faraz Syed, Yiyang Chen, Huixia Li, Xinjie Wang, Gaiping Zhang, En-Min Zhou, Qin Zhao
BACKGROUND: From 2014 to 2015 in China, many broiler breeder and layer hen flocks exhibited a decrease in egg production and some chickens developed hepatitis syndrome including hepatomegaly, hepatic necrosis and hemorrhage. Avian hepatitis E virus (HEV) and avian leucosis virus subgroup J (ALV-J) both cause decreasing in egg production, hepatomegaly and hepatic hemorrhage in broiler breeder and layer hens. In the study, the seroprevalence of avian HEV and ALV-J in these flocks emerging the disease from Shandong and Shaanxi provinces were investigated...
November 22, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27869591/vertebrate-host-susceptibility-to-heartland-virus
#4
Angela M Bosco-Lauth, Amanda E Calvert, J Jeffrey Root, Tom Gidlewski, Brian H Bird, Richard A Bowen, Atis Muehlenbachs, Sherif R Zaki, Aaron C Brault
Heartland virus (HRTV) is a recently described phlebovirus initially isolated in 2009 from 2 humans who had leukopenia and thrombocytopenia. Serologic assessment of domestic and wild animal populations near the residence of 1 of these persons showed high exposure rates to raccoons, white-tailed deer, and horses. To our knowledge, no laboratory-based assessments of viremic potential of animals infected with HRTV have been performed. We experimentally inoculated several vertebrates (raccoons, goats, chickens, rabbits, hamsters, C57BL/6 mice, and interferon-α/β/γ receptor-deficient [Ag129]) mice with this virus...
December 2016: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/27865971/complete-genome-sequence-of-a-non-pathogenic-strain-of-fowl-adenovirus-serotype-11-minimal-genomic-differences-between-pathogenic-and-non-pathogenic-viruses
#5
Angel E Absalón, Andrés Morales-Garzón, Pedro F Vera-Hernández, Diana V Cortés-Espinosa, Sara M Uribe-Ochoa, Laura J García, Eduardo Lucio-Decanini
In this study, we conducted the clinicopathological characterization of a non-pathogenic FAdV-D serotype 11 strain MX95, isolated from healthy chickens, and its entire genome was sequenced. Experiments in SPF chickens revealed that the strain is a non-pathogenic virus that did not cause death at challenge doses of 1×10(6) TCID50. Additionally, the infection in SPF chickens caused no apparent damage in most of the organs analyzed by necropsy and histopathology, but it did cause inclusion body hepatitis; nevertheless it did not generate severe infectious clinical symptoms...
November 17, 2016: Virology
https://www.readbyqxmd.com/read/27738984/animal-models-for-hepatitis-e-virus
#6
Lin Wang, Ling Wang
Animal models are one of the most important tools in the study of human hepatitis E virus (HEV) infection. They are particularly important in light of the major limitations of the cell culture system for HEV. Besides nonhuman primates, which are extremely valuable because of their susceptibility to HEV genotypes 1-4, animals like swine, rabbit, and chicken are also potential models for studies of pathogenesis, cross-species infection, and the molecular biology of HEV. Identification of the most useful animal model for human HEV infection studies is crucial to further investigations into this ubiquitous yet poorly understood virus...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27738976/hepatitis-e-virus
#7
Youchun Wang, Chenyan Zhao, Ying Qi, Yansheng Geng
Since the sequence of hepatitis E virus (HEV) was determined from a patient with enterically transmitted non-A, non-B hepatitis in 1989, similar sequences have been isolated from many different animals, including pigs, wild boars, deer, rabbits, bats, rats, chicken, and trout. All of these sequences have the same genomic organization, which contains open reading frames (ORFs) 1, 2, and 3, although their genomic sequences are variable. Some have proposed that they be classified as new family, Hepeviridae, which would be further divided into different genera and species according to their sequence variability...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27733122/ancient-recombination-events-and-the-origins-of-hepatitis-e-virus
#8
Andrew G Kelly, Natalie E Netzler, Peter A White
BACKGROUND: Hepatitis E virus (HEV) is an enteric, single-stranded, positive sense RNA virus and a significant etiological agent of hepatitis, causing sporadic infections and outbreaks globally. Tracing the evolutionary ancestry of HEV has proved difficult since its identification in 1992, it has been reclassified several times, and confusion remains surrounding its origins and ancestry. RESULTS: To reveal close protein relatives of the Hepeviridae family, similarity searching of the GenBank database was carried out using a complete Orthohepevirus A, HEV genotype I (GI) ORF1 protein sequence and individual proteins...
October 12, 2016: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/27615553/fowl-adenovirus-species-c-serotype-4-is-attributed-to-the-emergence-of-hepatitis-hydropericardium-syndrome-in-chickens-in-china
#9
Huixin Li, Juan Wang, Liye Qiu, Zongxi Han, Shengwang Liu
Since July in 2015, an emerging infectious disease of Hepatitis-Hydropericardium syndrome (HHS) was prevalent in chicken flocks in China. To confirm the causative agent and investigate the epidemiology of the disease, a total of 38 chicken flocks including 187 samples from Jilin, Liaoning, Heilongjiang, Henan, Anhui, Hubei, Jiangxi, Xinjiang, Shandong and Hunan provinces in China were collected and determined by PCR detection, sequencing, phylogenetic analysis and virus isolation. 81 samples (positive rate of samples, 81/187, 43...
September 9, 2016: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/27610734/natural-infection-with-avian-hepatitis-e-virus-and-marek-s-disease-virus-in-brown-layer-chickens-in-china
#10
Shuqing Yang, Liyuan Wang, Shuhong Sun
In the present study, avian hepatitis E virus (HEV) and serotype-1 strains of Marek's disease virus (MDV-1) were detected from a flock of 27-wk-old brown layer hens in China, accompanied by an average daily mortality of 0.44%. Postmortem examination of 25 sick hens and five apparently healthy hens selected randomly from the flock showed significant pathologic changes consistent with hepatitis-splenomegaly syndrome (HSS), including hepatomegaly, peritoneal fluid, and hepatic subcapsular hemorrhages. Microscopic examination of these livers showed multifocal necrotizing hepatitis and mild lymphocytic infiltration...
September 2016: Avian Diseases
https://www.readbyqxmd.com/read/27610716/hepatitis-virus-infections-in-poultry
#11
Danielle M Yugo, Ruediger Hauck, H L Shivaprasad, Xiang-Jin Meng
Viral hepatitis in poultry is a complex disease syndrome caused by several viruses belonging to different families including avian hepatitis E virus (HEV), duck hepatitis B virus (DHBV), duck hepatitis A virus (DHAV-1, -2, -3), duck hepatitis virus Types 2 and 3, fowl adenoviruses (FAdV), and turkey hepatitis virus (THV). While these hepatitis viruses share the same target organ, the liver, they each possess unique clinical and biological features. In this article, we aim to review the common and unique features of major poultry hepatitis viruses in an effort to identify the knowledge gaps and aid the prevention and control of poultry viral hepatitis...
September 2016: Avian Diseases
https://www.readbyqxmd.com/read/27610014/hepatitis-e-discovery-global-impact-control-and-cure
#12
REVIEW
Mohammad S Khuroo, Mehnaaz S Khuroo, Naira S Khuroo
Hepatitis E was identified as an epidemic of non-A, non-B hepatitis from Kashmir, India in 1978. Hepatitis E virus (HEV), the etiological agent is the sole member of family Hepeviridae. The virus has marked heterogeneity and infects many animals like bats, camel, chicken, deer, boar, mongoose, pigs, rats, rabbit and cutthroat trout. Hepatitis E is a disease with a major global impact and has two distinct epidemiological patterns. Hepatitis E is an imperative health issue in developing nations, transmitted through sullied water and happens most every now in young adults...
August 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27418664/molecular-characterization-of-quail-bronchitis-virus-isolated-from-bobwhite-quail-in-minnesota
#13
Azad Singh, Aschalew Z Bekele, Devi P Patnayak, Naresh Jindal, Robert E Porter, Sunil K Mor, Sagar M Goyal
From 2008 to 2012, 4 separate cases of quail bronchitis virus infection were seen in bobwhite quail (Colinus virginianus) raised in Minnesota. The quail chicks ranged in age from 5 d to 8 wk and suffered from respiratory distress and elevated mortality. On necropsy, gross lesions consisted of mucus in trachea, congested lungs, caseous air sacculitis, accumulation of chalky white urates on internal organs, necrotic foci in liver, and enlarged spleen. Histologic examination revealed fibrinoheterophilic rhinitis, heterophilic bronchitis, heterophilic tracheitis, and interstitial pneumonia in addition to deciliation, desquamation, and necrosis of bronchial respiratory epithelium...
July 14, 2016: Poultry Science
https://www.readbyqxmd.com/read/27356980/the-outcome-of-experimentally-induced-inclusion-body-hepatitis-ibh-by-fowl-aviadenoviruses-fadvs-is-crucially-influenced-by-the-genetic-background-of-the-host
#14
Miguel Matos, Beatrice Grafl, Dieter Liebhart, Michael Hess
In the present study, inclusion body hepatitis (IBH) was experimentally induced by oral inoculation of two groups of specific pathogen-free (SPF) broilers and two groups of SPF layers at day-old with either a fowl aviadenovirus (FAdV)-D or a FAdV-E strain. A substantial variation in the degree of susceptibility was observed with mortalities of 100 and 96% in the FAdV-E and D infected SPF broiler groups, respectively, whereas in the groups of infected SPF layers mortalities of only 20 and 8% were noticed. Significant changes in clinical chemistry analytes of all infected birds together with histopathological lesions indicated impairment of liver and pancreas integrity and functions...
2016: Veterinary Research
https://www.readbyqxmd.com/read/27164843/identification-and-characterization-of-avian-hepatitis-e-virus-genotype-2-from-chickens-with-hepatitis-splenomegaly-syndrome-in-korea
#15
Hyun-Woo Moon, Byung-Woo Lee, Haan Woo Sung, Byung-Il Yoon, Hyuk Moo Kwon
A new avian hepatitis E virus (HEV) GI-B was identified in broiler breeders with hematomas, liver rupture, and splenomegaly, along with excessive abdominal fat, in Korea. Previously, genotype 1 had been identified in avian HEV strains in Korea. Complete sequence analyses revealed that the new avian HEV clustered in genotype 2, which has been identified in the USA and Spain; the GI-B isolate was closely related to the USA prototype avian HEV isolated from a chicken with hepatitis-splenomegaly syndrome. Although some HEV genotypes show a geographical distribution pattern, the discovery of genotype 2 in addition to genotype 1 in Korea suggests that the geographical grouping might be reconsidered...
October 2016: Virus Genes
https://www.readbyqxmd.com/read/27073893/c-terminal-amino-acids-471-507-of-avian-hepatitis-e-virus-capsid-protein-are-crucial-for-binding-to-avian-and-human-cells
#16
Xinquan Zhang, Ivana Bilic, Ana Marek, Martin Glösmann, Michael Hess
The infection of chickens with avian Hepatitis E virus (avian HEV) can be asymptomatic or induces clinical signs characterized by increased mortality and decreased egg production in adult birds. Due to the lack of an efficient cell culture system for avian HEV, the interaction between virus and host cells is still barely understood. In this study, four truncated avian HEV capsid proteins (ORF2-1 - ORF2-4) with an identical 338aa deletion at the N-terminus and gradual deletions from 0, 42, 99 and 136aa at the C-terminus, respectively, were expressed and used to map the possible binding site within avian HEV capsid protein...
2016: PloS One
https://www.readbyqxmd.com/read/26953941/characterization-of-seven-outbreaks-of-hemorrhagic-hepatopathy-syndrome-in-commercial-pullets-following-the-administration-of-a-salmonella-enteritidis-bacterin-in-california
#17
S Carnaccini, H L Shivaprasad, G Cutler, M Bland, X J Meng, S P Kenney, A A Bickford, G Cooper, B Charlton, C G Sentíes-Cué
Between April 2013 and April 2015, seven flocks belonging to three different major commercial egg producers inCalifornia experienced a mild increase in mortality 2 to 3 wk after administration of Salmonella Enteritidis bacterins. Strains of chickens involved were H&N (flock A1, A2, B2, C1, C2, and C3) and Lohmann white (flock B1). Vaccination was administered individually through injection either in the breast muscles or subcutis in the legs between 11 and 18 wk of age in all flocks. Clinical signs ranged from inapparent to lameness, reluctance to walk, greenish diarrhea, and retching-like symptoms...
March 2016: Avian Diseases
https://www.readbyqxmd.com/read/26841005/virology-serology-and-demography-of-hepatitis-e-viremic-blood-donors-in-south-east-england
#18
Richard S Tedder, Kate I Tettmar, Su R Brailsford, Bengu Said, Ines Ushiro-Lumb, Alan Kitchen, Dilys Morgan, Sam Lattimore, Joanne Tossell, Samreen Ijaz, Patricia E Hewitt
BACKGROUND: Hepatitis E virus (HEV) Genotype 3 (G3) in England comprises two principal phylogenetic groups (Group 1 and Group 2) and can be transmitted by transfusion. Unselected screening identified 79 viremic donors; 76 participated in a follow-up study. STUDY DESIGN AND METHODS: Viral RNA dynamics, phylogenetics, and seroconversion were characterized in the donors. Detailed demographic, travel, clinical, and lifestyle questionnaires were undertaken. RESULTS: The majority of viremic individuals (57/79) were seronegative at time of donation but all seroconverted...
June 2016: Transfusion
https://www.readbyqxmd.com/read/26564555/subclinical-avian-hepatitis-e-virus-infection-in-layer-flocks-in-the-united-states
#19
Priscilla F Gerber, Darrell W Trampel, Eric M Willinghan, Padma Billam, Xiang-Jin Meng, Tanja Opriessnig
The objective of this study was to determine patterns of avian HEV infection in naturally infected chicken farms. A total of 310 serum samples and 62 pooled fecal samples were collected from 62 chicken flocks on seven commercial in-line egg farms in the Midwestern United States and tested for avian HEV circulation. Serum samples were tested for the presence of anti-avian HEV IgY antibodies by a fluorescent microbead immunoassay (FMIA) which was developed for this study. The FMIA was validated using archived samples of chickens with known exposure (n = 96) and compared to the results obtained with an enzyme-linked immunosorbent assay (ELISA) based on the same capture antigen...
December 2015: Veterinary Journal
https://www.readbyqxmd.com/read/26478157/avian-hepatitis-e-virus-infection-in-organic-layers
#20
Rocio Crespo, Tanja Opriessnig, Francisco Uzal, Priscilla F Gerber
Between 2012 and 2014, 141 chickens from 10 organic layer flocks with a history of severe drop in egg production (up to 40%) and slight increased mortality (up to 1% per week) were submitted to the Avian Health and Food Safety Laboratory (Puyallup, WA). At necropsy, the most common finding was pinpoint white foci on the liver and regressed ova without any other remarkable lesions. Histologically, there was multifocal mild-to-severe acute necrotizing hepatitis present. No significant bacteria were recovered from liver samples, and tests for mycotoxins were negative...
September 2015: Avian Diseases
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