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Hepatitis E

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https://www.readbyqxmd.com/read/28098552/hepatitis-e-virus-infection-in-solid-organ-transplant-recipients-france
#1
Sebastien Lhomme, Laurent Bardiaux, Florence Abravanel, Pierre Gallian, Nassim Kamar, Jacques Izopet
The rate of transfusion-transmitted hepatitis E virus (HEV) in transplant recipients is unknown. We identified 60 HEV-positive solid organ transplant patients and retrospectively assessed their blood transfusions for HEV. Seven of 60 patients received transfusions; 3 received HEV-positive blood products. Transfusion is not the major route of infection in this population.
February 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28098527/changing-epidemiology-of-hepatitis-a-and-hepatitis-e-viruses-in-china-1990-2014
#2
Xiang Ren, Peng Wu, Liping Wang, Mengjie Geng, Lingjia Zeng, Jun Zhang, Ningshao Xia, Shengjie Lai, Harry R Dalton, Benjamin J Cowling, Hongjie Yu
We compared the epidemiology of hepatitis A and hepatitis E cases in China from 1990-2014 to better inform policy and prevention efforts. The incidence of hepatitis A cases declined dramatically, while hepatitis E incidence increased. During 2004-2014, hepatitis E mortality rates surpassed those of hepatitis A.
February 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28097104/massive-hemolysis-causing-renal-failure-in-acute-hepatitis-e-infection
#3
Pragya Karki, Sarthak Malik, Bipadabhanjan Mallick, Vishal Sharma, Surinder S Rana
Acute viral hepatitis is usually a self-limiting illness. However, it can lead to complications that can be life-threatening, such as acute liver failure. Glucose 6 phosphate dehydrogenase (G6PD) deficiency in the setting of acute viral hepatitis can lead to a massive hemolysis, manifesting as acute kidney injury and markedly raised bilirubin levels; although cases are rare. Here, we report such a case. The patient had a viral hepatitis E infection and presented with kidney injury requiring dialysis. Examination showed very high mixed hyperbilirubinemia due to massive intravascular hemolysis...
December 28, 2016: Journal of Clinical and Translational Hepatology
https://www.readbyqxmd.com/read/28096411/hepatitis-e-virus-orf3-is-a-functional-ion-channel-required-for-release-of-infectious-particles
#4
Qiang Ding, Brigitte Heller, Juan M V Capuccino, Bokai Song, Ila Nimgaonkar, Gabriela Hrebikova, Jorge E Contreras, Alexander Ploss
Hepatitis E virus (HEV) is the leading cause of enterically transmitted viral hepatitis globally. Of HEV's three ORFs, the function of ORF3 has remained elusive. Here, we demonstrate that via homophilic interactions ORF3 forms multimeric complexes associated with intracellular endoplasmic reticulum (ER)-derived membranes. HEV ORF3 shares several structural features with class I viroporins, and the function of HEV ORF3 can be maintained by replacing it with the well-characterized viroporin influenza A virus (IAV) matrix-2 protein...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096081/mice-with-hyperbilirubinemia-due-to-gilbert-s-syndrome-polymorphism-are-resistant-to-hepatic-steatosis-by-decreased-serine-73-phosphorylation-of-ppar%C3%AE
#5
Terry D Hinds, Peter A Hosick, Michael W Hankins, Andrea Nestor-Kalinoski, David E Stec
Gilbert's syndrome is derived from a polymorphism (TA repeat) in the hepatic UGT1A1 gene which results in decreased conjugation and increased levels of unconjugated bilirubin. Recently, we have shown that bilirubin binds directly to the fat burning nuclear peroxisome proliferator-activated receptor α (PPARα). Additionally, we have shown that serine 73 phosphorylation (Ser(P)(73)) of PPARα decreases activity by reducing its protein levels and transcriptional activity. The aim of this study was to determine if humanized mice with the Gilbert's polymorphism (HuUGT*28) have increased PPARα activation and reduced hepatic fat accumulation...
January 17, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28095508/the-smc5-6-complex-restricts-hbv-when-localized-to-nd10-without-inducing-an-innate-immune-response-and-is-counteracted-by-the-hbv-x-protein-shortly-after-infection
#6
Congrong Niu, Christine M Livingston, Li Li, Rudolf K Beran, Stephane Daffis, Dhivya Ramakrishnan, Dara Burdette, Leanne Peiser, Eduardo Salas, Hilario Ramos, Mei Yu, Guofeng Cheng, Michel Strubin, William E Delaney Iv, Simon P Fletcher
The structural maintenance of chromosome 5/6 complex (Smc5/6) is a restriction factor that represses hepatitis B virus (HBV) transcription. HBV counters this restriction by expressing HBV X protein (HBx), which targets Smc5/6 for degradation. However, the mechanism by which Smc5/6 suppresses HBV transcription and how HBx is initially expressed is not known. In this study we characterized viral kinetics and the host response during HBV infection of primary human hepatocytes (PHH) to address these unresolved questions...
2017: PloS One
https://www.readbyqxmd.com/read/28093797/adverse-reactions-to-dietary-supplements-containing-red-yeast-rice-assessment-of-cases-from-the-italian-surveillance-system
#7
G Mazzanti, P A Moro, E Raschi, R Da Cas, F Menniti-Ippolito
BACKGROUND AND AIM: Red yeast rice (RYR) is contained in dietary supplements used in patients with dyslipidemia. RYR supplements contain monacolin K, which is chemically identical to lovastatin, a licensed drug with a well-known risk profile. We aimed to describe the safety profile of RYR by analysing spontaneous reports of suspected adverse reactions (ARs). METHODS: Within the Italian Surveillance System of Natural Health Products, suspected ARs were collected and evaluated by a multidisciplinary group of experts to assess causality using the WHO-UMC system or the CIOMS/RUCAM score, for hepatic reactions...
January 17, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28093571/roux-en-y-gastric-bypass-increases-systemic-but-not-portal-bile-acid-concentrations-by-decreasing-hepatic-bile-acid-uptake-in-minipigs
#8
O Chávez-Talavera, G Baud, V Spinelli, M Daoudi, M Kouach, J-F Goossens, E Vallez, R Caiazzo, M Ghunaim, T Hubert, S Lestavel, A Tailleux, B Staels, F Pattou
Roux-en-Y gastric bypass (RYGB) surgery is widely used in the management of morbid obesity. RYGB improves metabolism independently of weight loss by still unknown mechanisms. Bile acids (BAs) are good candidates to explain this benefit, since they regulate metabolic homeostasis and their systemic concentrations increase upon RYGB. Here we analyzed the mechanisms underlying the increase in systemic BA concentrations after RYGB and the role of the liver therein. To this aim, we used the Göttingen-like minipig, a human-size mammalian model, which allows continuous sampling and simultaneous analysis of pre-hepatic portal and systemic venous blood...
January 17, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28093535/hepatitis-e-in-singapore-a-case-series-and-viral-phylodynamics-study
#9
Esmeralda Chi-Yuan Teo, Boon-Huan Tan, Michael A Purdy, Pui-San Wong, Pei-Jun Ting, Pik-Eu Jason Chang, Lynette Lin-Ean Oon, Amanda Sue, Chong-Gee Teo, Chee-Kiat Tan
The incidence of hepatitis E in Singapore appears to be increasing. A retrospective case-series study of patients diagnosed with hepatitis E in a tertiary hospital from 2009 to 2013 was conducted. Of 16 cases, eight (50%) were solid-organ transplant recipients (SOTRs), and 14 (88%) were found infected by genotype 3 hepatitis E virus (HEV-3). Bayesian inferences based on HEV subgenomic sequences from seven cases suggest that HEV-3 strains were introduced to Singapore as two principal lineages. Within limitations of the study, it can be inferred that one lineage, in the 3efg clade, emerged about 83 years ago, probably originating from Japan, whereas the other, in the 3abchij clade, emerged about 40 years ago, from the United States...
January 16, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28093483/treatment-simplification-to-atazanavir-ritonavir%C3%A2-%C3%A2-lamivudine-versus-maintenance-of-atazanavir-ritonavir%C3%A2-%C3%A2-two-nrtis-in-virologically-suppressed-hiv-1-infected-patients-48-week-results-from-a-randomized-trial-atlas-m
#10
Simona Di Giambenedetto, Massimiliano Fabbiani, Eugenia Quiros Roldan, Alessandra Latini, Gabriella D'Ettorre, Andrea Antinori, Antonella Castagna, Giancarlo Orofino, Daniela Francisci, Pierangelo Chinello, Giordano Madeddu, Pierfrancesco Grima, Stefano Rusconi, Massimo Di Pietro, Annalisa Mondi, Nicoletta Ciccarelli, Alberto Borghetti, Emanuele Focà, Manuela Colafigli, Andrea De Luca, Roberto Cauda
BACKGROUND: Combination ART (cART)-related toxicities and costs have prompted the need for treatment simplification. The ATLAS-M trial explored 48 week non-inferior efficacy of simplification to atazanavir/ritonavir  +  lamivudine versus maintaining three-drug atazanavir/ritonavir-based cART in virologically suppressed patients. METHODS: We performed an open-label, multicentre, randomized, non-inferiority study, enrolling HIV-infected adults on atazanavir/ritonavir + two NRTIs, with stable HIV-RNA <50 copies/mL and CD4 + >200 cells/mm(3) Main exclusion criteria were hepatitis B virus coinfection, past virological failure on or resistance to study drugs, recent AIDS and pregnancy...
January 15, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28093123/synthesis-of-stable-isotopically-labeled-peptides-with-filter-assisted-enzymatic-labeling-for-the-diagnosis-of-hepatitis-b-virus-infection-utilizing-mass-spectrometry-based-proteomics-strategy
#11
Hsing-Fen Tsai, He-Hsuan Hsiao
A facile method for the preparation of stable isotopically labeled peptides was developed by means of filter-assisted tryptic (16)O/(18)O water labeling, which could be directly applied to the determination of hepatitis B virus infection from human serum with tandem mass spectrometry. Tryptic peptides of hepatitis B surface antigen or hepatitis B e antigen from different subtypes of hepatitis B virus were synthesized with traditional solid-phase peptide synthesis as potential biomarkers. Trypsin catalyzed oxygen-18 exchange at their amidated c-terminus of arginine or lysine residue...
March 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28092599/wild-boars-sus-scrofa-as-bioindicators-of-environmental-levels-of-selenium-in-poland
#12
E Nowakowska, B Pilarczyk, R Pilarczyk, A Tomza-Marciniak, M Bąkowska, A Marciniak
The objective of the study was to determine selenium content in selected organs (liver, kidney) of wild boars from different regions of Poland. Materials for the study were obtained from 28 sites located in 16 provinces of Poland. Selenium concentrations in organs were determined using spectrofluorometric methods after wet mineralization in HNO3 and HClO4 mixture. Mean selenium concentrations in the investigated wild boars from Poland were 0.230 μg/g wet weight in the liver and 1.327 μg/g w.w. in the kidneys...
December 1, 2016: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28090653/genome-wide-study-links-pnpla3-variant-with-elevated-hepatic-transaminase-after-acute-lymphoblastic-leukemia-therapy
#13
Yiwei Liu, Christian A Fernandez, Colton Smith, Wenjian Yang, Cheng Cheng, John C Panetta, Nancy Kornegay, Chengcheng Liu, Laura B Ramsey, Seth E Karol, Laura J Janke, Eric C Larsen, Naomi Winick, William L Carroll, Mignon L Loh, Elizabeth A Raetz, Stephen P Hunger, Meenakshi Devidas, Jun J Yang, Charles G Mullighan, Jinghui Zhang, William E Evans, Sima Jeha, Ching-Hon Pui, Mary V Relling
Remission induction therapy for acute lymphoblastic leukemia (ALL) includes medications that may cause hepatotoxicity, including asparaginase. We used a genome-wide association study (GWAS) to identify loci associated with elevated alanine transaminase (ALT) levels after induction therapy in children with ALL enrolled on St. Jude Children's Research Hospital (SJCRH) protocols. Germline DNA was genotyped using arrays and exome sequencing. Adjusting for age, body mass index, ancestry, asparaginase preparation and dosage, the PNPLA3 rs738409 (C>G) I148M variant, previously associated with fatty liver disease risk, had the strongest genetic association with ALT (P = 2...
January 16, 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28090342/-1-h-mrs-measured-ectopic-fat-in-liver-and-muscle-is-associated-with-the-metabolic-syndrome-in-danish-girls-but-not-in-boys-with-overweight-and-obesity
#14
A Nissen, C E Fonvig, E Chabanova, C Bøjsøe, C Trier, O Pedersen, T Hansen, H S Thomsen, J-C Holm
BACKGROUND: The metabolic syndrome (MetS) is a complication to overweight and obesity, which can be observed already in childhood. Ectopic lipid accumulation in muscle and liver has been shown to associate with the development of insulin resistance and dyslipidemia. Thus, the interaction between MetS and ectopic fat may offer clinical relevance. OBJECTIVES: To investigate the prevalence of MetS, or components hereof, and ectopic fat accumulation in liver and skeletal muscle tissue in children, as well as interactions between these...
December 2016: Obesity Science & Practice
https://www.readbyqxmd.com/read/28089947/hepatic-xanthine-oxidase-activity-and-purine-nucleosides-levels-as-physiological-mediators-to-analyze-a-subcutaneous-treatment-with-phse-2-in-mice-infected-by-toxoplasma-gondii
#15
Pedro H Doleski, Daniela B R Leal, Vanessa Machado, Nathieli B Bottari, Emerson A Casali, Cesar E J Moritz, Giovana Camillo, Fernanda F Vogel, Lenita M Stefani, Aleksandro Schafer da Silva
The aim of this study was to evaluate the levels of purine nucleosides and xanthine oxidase (XO) activity in the liver of mice chronically infected by Toxoplasma gondii and treated with diphenyl diselenide (PhSe)2. For this experiment, forty Swiss mice were used. Twenty animals were orally infected by approximately 50 bradizoites of a cystogenic ME-49 strain of T. gondii, and the same number of uninfected mice was used as a control group. Ten infected and ten uninfected mice were subcutaneously treated twice (days 1 and 20 post-infection (PI)) with 5 μmol kg(-1) of (PhSe)2...
January 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28089783/characterization-of-rat-or-human-hepatocytes-cultured-in-microphysiological-systems-mps-to-identify-hepatotoxicity
#16
Shih-Yu Chang, Jenna L Voellinger, Kirk P Van Ness, Brian Chapron, Rachel M Shaffer, Thomas Neumann, Collin C White, Terrance J Kavanagh, Edward J Kelly, David L Eaton
The liver is the main site for drug and xenobiotics metabolism, including inactivation or bioactivation. In order to improve the predictability of drug safety and efficacy in clinical development, and to facilitate the evaluation of the potential human health effects from exposure to environmental contaminants, there is a critical need to accurately model human organ systems such as the liver in vitro. We are developing a microphysiological system (MPS) based on a new commercial microfluidic platform (Nortis, Inc...
January 12, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28089782/hepatic-co-cultures-in-vitro-reveal-suitable-to-detect-nrf2-mediated-oxidative-stress-responses-on-the-bladder-carcinogen-o-anisidine
#17
Franziska Wewering, Florent Jouy, Sükran Caliskan, Stefan Kalkhof, Martin von Bergen, Andreas Luch, Sebastian Zellmer
The azo dye o-anisidine is known as an industrial and environmental pollutant. Metabolites of o-anisidine remain in the liver for >24h. However, the toxicological impact of o-anisidine on the liver and its individual cell types, e.g., hepatocytes and immune cells, is currently poorly understood. A novel co-culture system, composed of HepG2 or Huh-7 cells, and differentiated THP-1 cells was used to study the metabolic capacity towards o-anisidine, and compared to primary murine hepatocytes which express high enzyme activities...
January 12, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28089781/genotoxic-effect-and-rat-hepatocyte-death-occurred-after-oxidative-stress-induction-and-antioxidant-gene-downregulation-caused-by-long-term-fluoride-exposure
#18
F D Campos-Pereira, L Lopes-Aguiar, F L Renosto, G A S Nogueira, E F D Costa, R Barbieri Pulz, E C M Silva-Zacarin, C A Oliveira, A A Pigoso, G D C Severi-Aguiar
Studies focusing on possible genotoxic effects of excess fluoride are contradictory and inconclusive. Currently, studies have reported a probable link to oxidative stress, DNA damage and apoptosis induced by fluoride in rat hepatocytes. We developed an in vivo study administering three doses of fluoride by gavage given to rats for 60 day. Micronucleus test was applied to investigate genotoxic potential of fluoride. The TUNEL method determined DNA fragmentation and apoptosis. Biochemical parameters to investigate mitochondrial swelling and oxidative stress...
January 12, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28089613/high-frequency-of-hepatitis-e-virus-infection-in-swine-from-south-brazil-and-close-similarity-to-human-hev-isolates
#19
Ana Maria Passos-Castilho, Celso Francisco Hernandes Granato
Hepatitis E virus is responsible for acute and chronic liver infections worldwide. Swine hepatitis E virus has been isolated in Brazil, and a probable zoonotic transmission has been described, although data are still scarce. The aim of this study was to investigate the frequency of hepatitis E virus infection in pigs from a small-scale farm in the rural area of Paraná State, South Brazil. Fecal samples were collected from 170 pigs and screened for hepatitis E virus RNA using a duplex real-time RT-PCR targeting a highly conserved 70nt long sequence within overlapping parts of ORF2 and ORF3 as well as a 113nt sequence of ORF2...
January 3, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28089593/physician-knowledge-and-attitudes-about-hepatitis-a-and-current-practices-regarding-hepatitis-a-vaccination-delivery
#20
Noele P Nelson, Mandy Allison, Megan C Lindley, Michaela Brtnikova, Lori A Crane, Brenda L Beaty, Laura P Hurley, Allison Kempe
OBJECTIVES: To assess physicians' 1) knowledge and attitudes about hepatitis A disease and HepA vaccine, and 2) child care and school HepA vaccine mandates; 3) practices related to HepA vaccine delivery; 4) factors associated with strongly recommending HepA vaccine to all 1-2 year olds; and 5) feasibility of implementing HepA catch-up vaccination at health maintenance visits. METHODS: A national survey was conducted among representative networks of pediatricians and family medicine physicians (FMs) from March to June, 2014 by e-mail or mail based on provider preference...
January 9, 2017: Academic Pediatrics
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