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https://www.readbyqxmd.com/read/27902514/prevalence-and-epidemiology-of-hepatitis-d-among-patients-with-chronic-hepatitis-b-virus-infection-a-report-from-northern-spain
#1
Carlos Ordieres, Carmen A Navascués, María L González-Diéguez, Mercedes Rodríguez, Valle Cadahía, María Varela, Luis Rodrigo, Manuel Rodríguez
BACKGROUND: The incidence of hepatitis delta virus (HDV) infection has decreased during the last decades. However, an increasing trend has been reported recently. PATIENTS AND METHODS: We carried out a case-control study to analyze changes in its prevalence in 1215 chronic hepatitis B virus (HBV) patients, diagnosed consecutively in a tertiary center, between 1983 and 2012. According to the year of diagnosis, patients were distributed into two groups: A [1983-1997 (n=786)] and B [1998-2012 (n=429)]...
November 29, 2016: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/27894309/analysis-of-long-noncoding-rna-expression-in-hepatocellular-carcinoma-of-different-viral-etiology
#2
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/27881614/performance-characteristics-of-a-new-consensus-commercial-kit-for-hepatitis-d-virus-rna-viral-load-quantification
#3
Frédéric Le Gal, Samira Dziri, Athenaïs Gerber, Chakib Alloui, Zahia Ben Abdesselam, Dominique Roulot, Ségolène Brichler, Emmanuel Gordien
Hepatitis Delta virus (HDV) is responsible for fulminant hepatitis and liver failure, and accelerates evolution towards cirrhosis and hepatocellular carcinoma in hepatitis B virus-infected patients. To date treatment relies upon long-term administration of pegylated alpha-interferon with sustained virological response in 30% of the patients. Very recently, new promising anti HDV therapies have been developed and are already used in clinical trials. HDV-RNA viral load (HDVL) monitoring must be an integral part of the management of the infected-patients...
November 23, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27880976/a-novel-quantitative-microarray-antibody-capture-q-mac-assay-identifies-an-extremely-high-hdv-prevalence-amongst-hbv-infected-mongolians
#4
Xiaohua Chen, Odgerel Oidovsambuu, Ping Liu, Rosslyn Grosely, Menashe Elazar, Virginia D Winn, Benjamin Fram, Zhang Boa, Hongjie Dai, Bekhbold Dashtseren, Dahgwahdorj Yagaanbuyant, Zulkhuu Genden, Naranbaatar Dashdorj, Andreas Bungert, Naranjargal Dashdorj, Jeffrey S Glenn
: Hepatitis delta virus (HDV) causes the most severe form of human viral hepatitis. HDV requires a hepatitis B virus (HBV) co-infection to provide HDV with HBV surface antigen envelope proteins. The net effect of HDV is to make the underlying HBV disease worse, including higher rates of hepatocellular carcinoma (HCC). Accurate assessments of current HDV prevalence have been hampered by the lack of readily available and reliable quantitative assays, combined with the absence of an FDA-approved therapy...
November 23, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/27821080/a-prominent-role-of-hepatitis-d-virus-in-liver-cancers-documented-in-central-africa
#5
Marie Atsama Amougou, Dominique Noah Noah, Paul Fewou Moundipa, Pascal Pineau, Richard Njouom
BACKGROUND: Hepatocellular Carcinoma (HCC) is one of the commonest cancers in Central Africa, a region with the unusual peculiarity to be hyperendemic for infections with Hepatitis B, C and D viruses. However, data estimating the respective proportions of HCC cases attributable to these viruses are still limited in this area. The current study was undertaken to determine the role of these viruses in HCC compared to non-HCC Cameroonian patients. METHODS: A case-control study was conducted in the Gastroenterology Unit of Central Hospital of Yaounde in collaboration with Centre Pasteur of Cameroon...
November 7, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27813124/noninvasive-markers-for-staging-fibrosis-in-chronic-delta-hepatitis
#6
V Takyar, P Surana, D E Kleiner, K Wilkins, J H Hoofnagle, T J Liang, T Heller, C Koh
BACKGROUND: Serum fibrosis markers are useful in staging chronic hepatitis B (HBV) and C (HCV) virus but have not been evaluated in chronic hepatitis D virus (HDV). AIM: To evaluate the utility of serum fibrosis markers [fibrosis-4 score (FIB-4), aspartate aminotransferase (AST) to alanine aminotransferase (ALT) ratio, aspartate aminotransferase ratio (AAR), age-platelet index (API), AST-to-platelet-ratio-index (APRI) and Hui score] in HDV infection. METHODS: Clinical and histologic laboratory data from HBV, HCV and HDV patients were evaluated and serum fibrosis markers were calculated...
January 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27807029/cellular-nuclear-export-factors-tap-and-aly-are-required-for-hdag-l-mediated-assembly-of-hepatitis-delta-virus
#7
Hsiu-Chen Huang, Chung-Pei Lee, Hui-Kang Liu, Ming-Fu Chang, Yu-Heng Lai, Yu-Ching Lee, Cheng Huang
Hepatitis delta virus (HDV) is a satellite virus of hepatitis B virus (HBV). HDV genome encodes two forms of hepatitis delta antigen (HDAg), small HDAg (HDAg-S), which is required for viral replication, and large HDAg (HDAg-L), which is essential for viral assembly. HDAg-L is identical to HDAg-S except that it bears a 19 amino acid extension at the C terminus. Both HDAgs contain a nuclear localization signal (NLS), but only HDAg-L contains a CRM1-independent nuclear export signal at its C terminus. The nuclear export activity of HDAg-L is important for HDV particle formation...
November 2, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27803174/the-third-signal-cytokine-il-12-rather-than-immune-checkpoint-inhibitors-contribute-to-the-functional-restoration-of-hepatitis-d-virus-specific-t-cells
#8
Thomas Schirdewahn, Jan Grabowski, Solomon Owusu Sekyere, Birgit Bremer, Anika Wranke, Sebastian Lunemann, Verena Schlaphoff, Janina Kirschner, Svenja Hardtke, Michael Peter Manns, Markus Cornberg, Heiner Wedemeyer, Pothakamuri Venkata Suneetha
BACKGROUND:  Hepatitis D virus (HDV) infection affects 15-20 million individuals world-wide and causes severely progressive hepatitis. It is unknown to what extent cellular immune responses contribute to liver disease and control of viral replication in HDV infection. METHODS:  Immune cell frequencies and phenotypes were determined in 49 HDV-infected patients, 25 HBV-monoinfected individuals and 18 healthy controls. T-cell proliferative and cytokine-producing capacities were analysed by stimulation with overlapping peptides spanning the large HDV antigen...
October 31, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27783949/solute-carrier-ntcp-regulates-innate-antiviral-immune-responses-targeting-hepatitis-c-virus-infection-of-hepatocytes
#9
Eloi R Verrier, Che C Colpitts, Charlotte Bach, Laura Heydmann, Laetitia Zona, Fei Xiao, Christine Thumann, Emilie Crouchet, Raphaël Gaudin, Camille Sureau, François-Loïc Cosset, Jane A McKeating, Patrick Pessaux, Yujin Hoshida, Catherine Schuster, Mirjam B Zeisel, Thomas F Baumert
Chronic hepatitis B, C, and D virus (HBV, HCV, and HDV) infections are the leading causes of liver disease and cancer worldwide. Recently, the solute carrier and sodium taurocholate co-transporter NTCP has been identified as a receptor for HBV and HDV. Here, we uncover NTCP as a host factor regulating HCV infection. Using gain- and loss-of-function studies, we show that NTCP mediates HCV infection of hepatocytes and is relevant for cell-to-cell transmission. NTCP regulates HCV infection by augmenting the bile-acid-mediated repression of interferon-stimulated genes (ISGs), including IFITM3...
October 25, 2016: Cell Reports
https://www.readbyqxmd.com/read/27771387/hdv-rna-replication-is-associated-with-hbv-repression-and-interferon-stimulated-genes-induction-in-super-infected-hepatocytes
#10
Dulce Alfaiate, Julie Lucifora, Natali Abeywickrama-Samarakoon, Maud Michelet, Barbara Testoni, Jean-Claude Cortay, Camille Sureau, Fabien Zoulim, Paul Dény, David Durantel
Hepatitis D virus (HDV) super-infection of Hepatitis B virus (HBV)-infected patients is the most aggressive form of viral hepatitis. HDV infection is not susceptible to direct anti-HBV drugs, and only suboptimal antiviral responses are obtained with interferon (IFN)-alpha-based therapy. To get insights on HDV replication and interplay with HBV in physiologically relevant hepatocytes, differentiated HepaRG (dHepaRG) cells, previously infected or not with HBV, were infected with HDV, and viral markers were extensively analyzed...
October 19, 2016: Antiviral Research
https://www.readbyqxmd.com/read/27753688/the-hepatitis-d-satellite-virus-of-hepatitis-b-virus-half-opening-a-new-era-to-control-viral-infection
#11
Natali Abeywickrama-Samarakoon, Jean-Claude Cortay, Paul Dény
PURPOSE OF REVIEW: To highlight new concepts and therapeutic approaches concerning hepatitis D virus (HDV) infection. RECENT FINDINGS: Common receptor for hepatitis B virus (HBV) and HDV has been elucidated, deciphering of HDV replication is still in progress, preliminary results of phase II proof-of-concept clinical assays for entry inhibitors and cellular farnesyl transferase inhibitors are now available. SUMMARY: Hepatitis D infection remains a severe acute and chronic liver illness with the only currently approved therapy (Peg-αIFN) achieving disappointingly low rates of sustained viral response and clinical improvement...
October 7, 2016: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/27748305/presence-of-acute-hepatitis-d-infection-in-hbsag-positive-cancer-patients-a-preliminary-study-from-west-gujarat
#12
Foram Maulin Patel, Parijath N Goswami
BACKGROUND & OBJECTIVES: Hepatitis delta virus (HDV) and hepatitis B virus (HBV) co-infection is well known to induce a spectrum of acute and chronic liver diseases. There has been global decline in the prevalence of hepatitis D infection. The aim of the present study was to know the presence of acute HDV infection among hepatitis B surface antigen (HBsAg) positive cancer patients. METHODS: A total of 5043 samples were subjected for routine testing of HBV, HIV and HCV by ELISA method...
June 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/27746337/hepatitis-delta-associated-mortality-in-hiv-hbv-coinfected-patients
#13
Charles Béguelin, Darius Moradpour, Roland Sahli, Franziska Suter-Riniker, Alexander Lüthi, Matthias Cavassini, Huldrych F Günthard, Manuel Battegay, Enos Bernasconi, Patrick Schmid, Alexandra Calmy, Dominique L Braun, Hansjakob Furrer, Andri Rauch, Gilles Wandeler
BACKGROUND & AIMS: Hepatitis delta virus (HDV) infection accelerates the progression of hepatitis B virus (HBV)-related liver disease. We assessed the epidemiological characteristics of HDV infection in the nationwide Swiss HIV Cohort Study and evaluated its impact on clinical outcomes. METHODS: All HIV-infected patients with a positive hepatitis B surface antigen test were considered and tested for anti-HDV antibodies. HDV amplification and sequencing were performed in anti-HDV-positive patients...
October 14, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/27742037/hepatitis-d-virus-infections-among-injecting-drug-users-with-and-without-human-immunodeficiency-virus-infection-in-taiwan
#14
Meng-Hsuan Hsieh, Shu-Chi Wang, Ming-Yen Hsieh, Chung-Feng Huang, Ming-Lun Yeh, Jeng-Fu Yang, Ko Chang, Wei-Ru Lin, Chun-Yu Lin, Tun-Chieh Chen, Jee-Fu Huang, Chia-Yen Dai, Jih-Jin Tsai, Wan-Long Chuang, Ming-Lung Yu
In Taiwan, injecting drug use has been the main route of human immunodeficiency virus (HIV) transmission since 2005, with hepatitis B virus (HBV) and hepatitis D virus (HDV) also having similar transmission routes. This has now become an important public health issue. The aim of this study is to explore the conditions of HDV infections between injecting drug users (IDUs) with and without HIV infection in Southern Taiwan. In this study, 87 IDUs were enrolled, including 27 anti-HDV seronegative IDUs and 60 anti-HDV seropositive IDUs, and the results of their liver function tests, CD4 cell counts, and anti-HIV and HIV RNA levels were analyzed...
October 2016: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/27711945/-laboratory-requirements-to-diagnose-viral-hepatitis-under-the%C3%A2-development-of-guidelines
#15
H Becker, J T Stahmeyer, M P Manns, C Krauth, M Cornberg
Infections with hepatitis B-, C- and D- viruses have a significant health burden. In Germany, the seroprevalence of HBs-Ag is calculated with 0.6 % and of HCV-antibodies with 0.3 %. However, most patients are not diagnosed. Sequelae are liver-cirrhosis and hepatocellular carcinoma. Several S3-guidelines for the diagnosis and treatment of viral hepatitis have been established. However, implementation of guidelines is not easy to evaluate. To estimate the changes of medical knowledge and diagnostic procedures about viral hepatitis, 7 parameters of liver-diagnostics were elected to analyze the requirements profile in the years 2005 - 2011 in 4 German federal states...
October 6, 2016: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/27695867/hepatitis-d-virus-infection-in-slovenian-patients-with-chronic-hepatitis-b-virus-infection-a-national-prevalence-study-and-literature-review
#16
Mateja M Jelen, Lea Hošnjak, Špela Štunf, Anja Zagožen, Kristina Fujs Komloš, Petra Markočič, Mario Poljak, Katja Seme
INTRODUCTION: Of the 350 million individuals chronically infected with hepatitis B virus (HBV) worldwide, approximately 15 to 20 million have been exposed to hepatitis D virus (HDV). This study determined for the first time the HDV prevalence in Slovenian patients with chronic HBV infection. In addition, a literature search was performed to identify all HDV prevalence studies from European countries. METHODS: A total of 1,305 HBsAg-positive serum samples, obtained from the same number of patients, were randomly selected from 2,337 patients referred to the Slovenian national reference laboratory for viral hepatitis between 1998 and 2015...
September 2016: Acta Dermatovenerologica Alpina, Panonica, et Adriatica
https://www.readbyqxmd.com/read/27686363/is-hepatitis-delta-infections-important-in-brazil
#17
Maira Ferreira Cicero, Nathalia Mantovani Pena, Luiz Claudio Santana, Rafael Arnold, Rafael Gonçalves Azevedo, Élcio de Souza Leal, Ricardo Sobhie Diaz, Shirley Vasconcelos Komninakis
BACKGROUND: The Hepatitis Delta Virus (HDV) can increase the incidence of fulminant hepatitis. For this infection occurs, the host must also be infected with Hepatitis B Virus. Previous studies demonstrated the endemicity and near exclusivity of this infection in the Amazon region, and as a consequence of the difficulty in accessing this area we used dried blood spots (DBS) in sample collection. The aims of this study were to investigate the presence of recombination, to analyze the epidemiology, ancestry and evolutionary pressures on HDV in Brazil...
September 29, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27594346/recognizing-the-impact-of-endemic-hepatitis-d-virus-on-hepatitis-b-virus-eradication
#18
Ashish Goyal, John M Murray
BACKGROUND: Hepatitis delta virus (HDV) in conjunction with hepatitis B virus (HBV) increases adult morbidity and mortality. A number of studies have performed cost-benefit analyses for HBV interventions, but they have ignored the impact of HDV on these outcomes. METHODS: Using a mathematical model of HBV-HDV epidemiology, we compare health benefits and cost outcomes of four interventions: testing with HBV adult vaccination (diagnosis), diagnosis with antiviral treatment for HBV infections (mono-infections), diagnosis with antiviral treatment for HBV-HDV infections (dual-infections), and awareness programs...
December 2016: Theoretical Population Biology
https://www.readbyqxmd.com/read/27569956/hepatitis-b-virus-and-hepatitis-d-virus-recurrence-in-patients-undergoing-liver-transplantation-for-hepatitis-b-virus-and-hepatitis-b-virus-plus-hepatitis-d-virus
#19
B Adil, O Fatih, I Volkan, B Bora, E Veysel, K Koray, K Cemalettin, I Burak, Y Sezai
BACKGROUND: In this study, we retrospectively analyzed the recurrence of hepatitis B virus (HBV) and hepatitis D virus (HDV) infection after liver transplantation for HBV and HBV+HDV co-infection. METHODS: Data from patients infected with HBV and HBV+HDV who underwent liver transplantation between March 2003 and June 2013 at the Liver Transplantation Institute of Inonu University were analyzed retrospectively. A total of 255 patients were included in the study. Group 1 (n = 127) comprised patients who underwent liver transplantation because of HBV, and group 2 (n = 128) comprised patients who underwent liver transplantation because of HBV+HDV...
July 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27534692/hepatitis-delta-virus-insights-into-a-peculiar-pathogen-and-novel-treatment-options
#20
REVIEW
Florian A Lempp, Yi Ni, Stephan Urban
Chronic hepatitis D is the most severe form of viral hepatitis, affecting ∼20 million HBV-infected people worldwide. The causative agent, hepatitis delta virus (HDV), is a unique human pathogen: it is the smallest known virus; it depends on HBV to disseminate its viroid-like RNA; it encodes only one protein (HDAg), which has both structural and regulatory functions; and it replicates using predominantly host proteins. The failure of HBV-specific nucleoside analogues to suppress the HBV helper function, and the limitations of experimental systems to study the HDV life cycle, have impeded the development of HDV-specific drugs...
October 2016: Nature Reviews. Gastroenterology & Hepatology
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