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https://www.readbyqxmd.com/read/28445010/detection-of-serum-antibodies-to-hepatitis-e-virus-based-on-hev-genotype-3-orf2-capsid-protein-expressed-in-nicotiana-benthamiana
#1
Milena Mazalovska, Nikola Varadinov, Tsvetoslav Koynarski, Ivan Minkov, Pavel Teoharov, George P Lomonossoff, Gergana Zahmanova
BACKGROUND: Hepatitis E virus (HEV) causes epidemics in developing countries and is primarily transmitted through the fecal-oral route. There have been recent reports on the zoonotic spread of the virus, and several animal species, primarily pigs, have been recognized as reservoirs of HEV. Because of its possible spread, there is an urgent need of a method for the cost-effective production of HEV proteins that can be used as diagnostic antigens for the serological detection of anti-HEV antibodies...
July 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28439773/parsonage-turner-syndrome-due-to-autochthonous-acute-genotype-3f-hepatitis-e-virus-infection-in-a-nonimmunocompromised-55-year-old-patient
#2
A Velay, W Kack-Kack, F Abravanel, S Lhomme, P Leyendecker, L Kremer, P Chamouard, J Izopet, S Fafi-Kremer, H Barth
Hepatitis E virus (HEV) infection is an emerging autochthonous disease in industrialized countries. Extra-hepatic manifestations, in particular neurologic manifestations, have been reported in HEV infection. Only a few cases of hepatitis E-associated Parsonage-Turner syndrome have been reported, and HEV genotypes were rarely determined. Here, we report the case of a Parsonage-Turner syndrome associated with an acute autochthonous HEV infection in a 55-year-old immunocompetent patient. HEV genomic RNA was detected in serum and cerebrospinal fluid samples (CSF), and molecular phylogenetic analysis of HEV was performed...
April 24, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28438608/serological-evidence-of-hepatitis-e-virus-infection-in-dromedary-camels-in-ethiopia
#3
Tian-Cheng Li, Sayaka Yoshizaki, Xianfeng Zhou, Hiroshi Sentsui, Kazuya Shirato, Shutoku Matsuyama, Simenew Keskes Melaku, Boldbaatar Bazartseren, Naokazu Takeda, Takaji Wakita
The genome of dromedary camel hepatitis E virus (DcHEV) has been detected in stool and serum samples from dromedary camels, but the sero-epidemiological information of DcHEV infection remains unclear. A total of 246 serum samples collected from dromedary camels (Camelus dromedarius) in Ethiopia, and 40 serum samples from Bactrian camels (Camelus ferus) in Mongolia were examined for the detection of anti-DcHEV IgG antibody by a newly developed enzyme-linked immunosorbent assay (ELISA) by using DcHEV-like particles (DcHEV-LPs) as the antigen...
April 21, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28434129/phage-displayed-peptides-that-mimic-epitopes-of-hepatitis-e-virus-capsid
#4
Osmany Larralde, Juraj Petrik
Hepatitis E is an emerging zoonotic infection of increasing public health threat for the UK, especially for immunosuppressed individuals. A human recombinant vaccine has been licensed only in China and is not clear whether it protects against hepatitis E virus (HEV) genotype 3, the most prevalent in Europe. The aim of this study was to use phage display technology as a tool to identify peptides that mimic epitopes of HEV capsid (mimotopes). We identified putative linear and conformational mimotopes using sera from Scottish blood donors that have the immunological imprint of past HEV infection...
April 22, 2017: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/28426700/southern-tunisia-a-still-high-endemicity-area-for-hepatitis-a
#5
Houcine Neffatti, Patricia Lebraud, Corinne Hottelet, Jawher Gharbi, Taieb Challouf, Anne-Marie Roque-Afonso
BACKGROUND: Hepatitis A (HAV) and E (HEV) viruses are responsible for enterically transmitted hepatitis. Tunisia is reported to be of intermediate endemicity for HAV and of low seroprevalence for HEV; however, data from rural areas of South Tunisia are lacking. METHODS: Sera from 216 asymptomatic pregnant women and from 92 patients with acute hepatitis were collected between October 2014 and November 2015. Total and IgM anti-HAV immunoglobulins and anti-HEV IgG and IgM were investigated...
2017: PloS One
https://www.readbyqxmd.com/read/28425927/hepatitis-e-virus-genotypes-and-evolution-emergence-of-camel-hepatitis-e-variants
#6
REVIEW
Siddharth Sridhar, Jade L L Teng, Tsz-Ho Chiu, Susanna K P Lau, Patrick C Y Woo
Hepatitis E virus (HEV) is a major cause of viral hepatitis globally. Zoonotic HEV is an important cause of chronic hepatitis in immunocompromised patients. The rapid identification of novel HEV variants and accumulating sequence information has prompted significant changes in taxonomy of the family Hepeviridae. This family includes two genera: Orthohepevirus, which infects terrestrial vertebrates, and Piscihepevirus, which infects fish. Within Orthohepevirus, there are four species, A-D, with widely differing host range...
April 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28425129/role-of-sialyl-6-sulfo-lewis-x-in-anti-tumor-immunity-against-oral-squamous-cell-carcinoma
#7
Hisato Yoshida, Hitomi Hoshino, Yoshiaki Imamura, Hitoshi Yoshimura, Kazuo Sano, Motohiro Kobayashi
BACKGROUND: Tumor-infiltrating lymphocytes (TILs) reportedly play a pivotal role in anti-tumor immunity against oral squamous cell carcinoma (OSCC); however, mechanisms governing TIL recruitment to OSCC tissues remain to be clarified. The present study was undertaken to assess a potential association between TILs and high endothelial venule (HEV)-like vessels that express sialyl 6-sulfo Lewis X (LeX). METHODS: OSCC tissue sections (n = 41) were subjected to immunohistochemistry for sialyl 6-sulfo LeX and CD34 to allow quantitation of HEV-like vessels...
April 20, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28424489/porous-graphene-sponge-additives-for-lithium-ion-batteries-with-excellent-rate-capability
#8
Qian Cheng
Rate capability as well as power performance of lithium ion batteries (LiBs) is becoming more and more important, especially as the application targets of LiBs move from mobile devices to transportation, such as EVs and HEVs. In this research, we report porous graphene sponge additives for both anode and cathode materials for better rate performance. The charge capacity retention improved from 56% to 77% at 6C and from 7% to 45% at 10C with 0.5 wt% added to the anode, while the discharge capacity retention at the 6C rate improved from 43% to 76% and the 10C rate discharge improved from 16% to 40% with the same amount of MG added to the cathode...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28423884/integrating-market-chain-assessments-with-zoonoses-risk-analysis-in-two-cross-border-pig-value-chains-in-lao-pdr
#9
Anna Okello, Tassilo Tamino Tiemann, Phouth Inthavong, Boualam Khamlome, Ammaly Phengvilaysouk, Soukanh Keonouchanh, Chattouphone Keokhamphet, Virasack Somoulay, Kate Blaszak, Stuart Blacksell, Walter Okello, John Allen
Lao PDR's recent accession to the World Trade Organization necessitates a greater understanding of the patterns and risk of livestock production in order to better align national policy with the Agreement on the Application of Sanitary and Phytosanitary Measures. This eco-health study describes the integration of market chain and zoonoses risk analyses at two strategic cross border points between Lao PDR, Thailand and Viet Nam. Information gained from smallholder farmer/trader interviews was integrated with serological surveys for pig-associated zoonoses - including hepatitis E virus, Taenia solium and Trichinella - to identify potential linkages between disease risk and pig production and slaughter in low input systems common across the country...
March 25, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28413835/mirna-signatures-can-predict-acute-liver-failure-in-hepatitis-e-infected-pregnant-females
#10
Nirupma Trehanpati, Rashi Sehgal, Sharda Patra, Ashish Vyas, Madavan Vasudevan, Ritu Khosla, Arshi Khanam, Guresh Kumar, Rakhi Maiwall, Gayatri Ramakrishna, Shyam Kottilil, Shiv Kumar Sarin
BACKGROUND: Acute viral hepatitis E (AVH-E) can often result in acute liver failure (ALF) during pregnancy. microRNAs serve as mediators in drug induced liver failure. We investigated their role as a biomarker in predicting ALF due to HEV (ALF-E). METHODS: We performed next generation sequencing and subsequent validation studies in PBMCs of pregnant (P) self limiting AVH-E, ALF due to HEV (ALF-E) and compared with AVH-E in non-pregnant (NP) females and healthy controls...
April 2017: Heliyon
https://www.readbyqxmd.com/read/28413196/the-molecular-cues-regulating-immune-cell-trafficking
#11
REVIEW
Akira Takeda, Naoko Sasaki, Masayuki Miyasaka
Lymphocyte recirculation between the blood and the lymphoid/non-lymphoid tissues is an essential homeostatic mechanism that regulates humoral and cellular immune responses in vivo. This system promotes the encounter of naïve T and B cells with their specific cognate antigen presented by dendritic cells, and with the regulatory cells with which they need to interact to initiate, maintain, and terminate immune responses. The constitutive lymphocyte trafficking is mediated by particular types of blood vessels, including the high endothelial venules (HEVs) in lymph nodes and Peyer's patches, and the flat-walled venules in non-lymphoid tissues including the skin...
2017: Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
https://www.readbyqxmd.com/read/28412690/epidemiological-characteristics-and-clinical-features-of-sporadic-viral-hepatitis-e-hev
#12
Rongrong Liu, Min Liu, Chengrui Geng, Yunmei Zou, Tong Jiao, Lijuan Li Lijuan Li
OBJECTIVE: The study aims to analyze the epidemiological characteristics and clinical features of sporadic viral hepatitis E. METHODS: The 1,000 cases of sporadic viral hepatitis E patients treated in 20 hospitals from May 2013 to May 2016 were selected as research subjects, with their clinical data retrospectively analyzed. RESULTS: (1) Epidemiological characteristics: Seen from the disease time, the 1,000 patients have morbidity throughout the year, but morbidity in hot and rainy summer is significantly higher than other seasons, there exists statistically difference in comparison between the groups (P<0...
November 2016: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28412294/visualization-of-hepatitis-e-virus-rna-and-proteins-in-the-human-liver
#13
Daniela Lenggenhager, Jérôme Gouttenoire, Mohsen Malehmir, Marion Bawohl, Hanna Honcharova-Biletska, Susanne Kreutzer, David Semela, Jörg Neuweiler, Sandra Hürlimann, Patrick Aepli, Montserrat Fraga, Roland Sahli, Luigi Terracciano, Laura Rubbia-Brandt, Beat Müllhaupt, Christine Sempoux, Darius Moradpour, Achim Weber
BACKGROUND: / Aims: Although hepatitis E constitutes a substantial disease burden worldwide, surprisingly little is known about the localization of hepatitis E virus (HEV) in the human liver. We therefore aimed to visualize HEV RNA and proteins in situ. METHODS: A panel of 12 different antibodies against HEV open reading frame (ORF) 1-3 proteins was evaluated for immunohistochemistry (IHC) and two probes for in situ hybridization (ISH) in formalin-fixed, paraffin-embedded (FFPE) Huh-7 cells transfected with HEV ORF1-3 expression vectors...
April 12, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28411095/acute-hepatitis-e-virus-infection-in-a-migrant-population-in-north-east-italy-a-retrospective-analysis
#14
Lucia Bradanini, Daniel Youkee, Paolo Fabris, Luisa Romanò, Enrico Brunetti, Maria Teresa Giordani
OBJECTIVE: To study the epidemiological and clinical features of Hepatitis E Virus (HEV) infection in a migrant population. METHODS: We performed a retrospective chart review, identifying a cohort of 21 symptomatic patients of migrant origin with confirmed HEV infection admitted in the period between January 1995-November 2014. RESULTS: 20 (95%) patients came from South Asian countries highly endemic for HEV, all positive for HEV genotype 1...
April 12, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/28404866/combined-antiangiogenic-and-anti-pd-l1-therapy-stimulates-tumor-immunity-through-hev-formation
#15
Elizabeth Allen, Arnaud Jabouille, Lee B Rivera, Inge Lodewijckx, Rindert Missiaen, Veronica Steri, Kevin Feyen, Jaime Tawney, Douglas Hanahan, Iacovos P Michael, Gabriele Bergers
Inhibitors of VEGF (vascular endothelial growth factor)/VEGFR2 (vascular endothelial growth factor receptor 2) are commonly used in the clinic, but their beneficial effects are only observed in a subset of patients and limited by induction of diverse relapse mechanisms. We describe the up-regulation of an adaptive immunosuppressive pathway during antiangiogenic therapy, by which PD-L1 (programmed cell death ligand 1), the ligand of the negative immune checkpoint regulator PD-1 (programmed cell death protein 1), is enhanced by interferon-γ-expressing T cells in distinct intratumoral cell types in refractory pancreatic, breast, and brain tumor mouse models...
April 12, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28397024/performance-of-hepatitis-e-virus-hev-antibody-tests-a-comparative-analysis-based-on-samples-from-individuals-with-direct-contact-to-domestic-pigs-or-wild-boar-in-germany
#16
Frauke Mara Sommerkorn, Birgit Schauer, Thomas Schreiner, Helmut Fickenscher, Andi Krumbholz
In Europe, Hepatitis E virus (HEV) genotype 3 causes most human infections, and domestic pigs and wild boar represent the main reservoirs. Contact to these animals represents one source of human infection. However, interpretation of studies is challenged in the absence of a serological gold standard. Hence, this study compared results of different HEV immunoassays. Plasma samples from 139 individuals who had professional contact to pigs (veterinarians, meat inspectors, slaughterhouse workers; n = 114) or hunted regularly (n = 25) were tested with assays specific for HEV IgG, HEV IgM, HEV IgA, and total HEV immunoglobulin as well as for viral RNA...
April 10, 2017: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/28394029/hepatitis-e-in-canadian-blood-donors
#17
Margaret A Fearon, Sheila F O'Brien, Gilles Delage, Vito Scalia, France Bernier, Mark Bigham, Steven Weger, Sneha Prabhu, Anton Andonov
BACKGROUND: Hepatitis E virus (HEV) is a virus of emerging importance to transfusion medicine as studies on blood donors and other populations demonstrate that the prevalence of endemic cases is higher than previously recognized and the risk to vulnerable transfusion recipients is not insignificant. STUDY DESIGN AND METHODS: We carried out an HEV prevalence study on 13,993 Canadian blood donors with polymerase chain reaction (PCR) testing on all donors and antibody testing on a subset of 4102 donors...
April 10, 2017: Transfusion
https://www.readbyqxmd.com/read/28383615/seroprevalence-of-hev-antibodies-in-a-sample-of-pregnant-women-in-the-city-of-messina
#18
V La Fauci, A Facciolà, R Riso, S Calimeri, D Lo Giudice, R Squeri
BACKGROUND: Hepatitis E virus (HEV) is widespread in developing countries and the disease is also increasing in the developed ones. This infection in pregnancy can cause spontaneous abortion and neonatal death in 56% of newborns. STUDY DESIGN: The study was conducted on a sample of 352 pregnant women, 326 Italian and 26 foreign, in order to confirm the presence of HEV in our territory, to analyze wrong habits of the population and to suggest preventive actions against the risk to contract the infection during pregnancy...
May 2017: Annali di Igiene: Medicina Preventiva e di Comunità
https://www.readbyqxmd.com/read/28382704/hepatitis-e-the-current-state-of-play
#19
REVIEW
M J Ankcorn, R S Tedder
The hepatitis E virus (HEV) is a major cause of acute hepatitis globally. Genotypes 1 and 2 (G1 and G2) are obligate human pathogens transmitted faeco-orally, leading to epidemics in developing countries. In contrast, genotypes 3 and 4 (G3 and G4) have a wider host range, including humans, but are primarily porcine viruses and are transmitted from animals to humans as a food-borne zoonosis when meat from an infected animal is consumed. HEV is increasingly recognised as a problem in developed countries, including countries in Europe...
April 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28376624/autochthonous-acute-hepatitis-e-an-increasingly-frequent-diagnosis-clinical-epidemiological-analysis-of-our-experience
#20
Luzdivina Monteserín Ron, Marcos Jiménez Palacios, Pedro Linares Torres, Aleida Miguel Peña, Begoña Álvarez Cuenllas, María Isabel Fernández-Natal, Emilio Valverde Romero, Francisco Jorquera Plaza
BACKGROUND: In Europe, acute hepatitis caused by the hepatitis E virus (HEV) traditionally was an infection found in people who had travelled to endemic zones, mainly Asia and Africa. However, a growing number of sporadic autochthonous cases are now being diagnosed in the Western world. OBJECTIVE: To analyze the cases of acute HEV hepatitis diagnosed in our setting, with the identification of the clinical-epidemiological characteristics. MATERIAL AND METHODS: We included the cases of acute HEV hepatitis diagnosed (positive anti-HEV IgM and/or HEV RNA present in serum) between January 2008 and December 2014...
April 5, 2017: Revista Española de Enfermedades Digestivas
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