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Hepatitis B virus

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https://www.readbyqxmd.com/read/28535669/acute-hepatitis-a-b-and-c-but-not-d-is-still-prevalent-in-mongolia-a-time-trend-analysis
#1
Oidov Baatarkhuu, Hye Won Lee, Jacob George, Dashchirev Munkh-Orshikh, Baasankhuu Enkhtuvshin, Sosorbaram Ariunaa, Mohammed Eslam, Sang Hoon Ahn, Kwang-Hyub Han, Do Young Kim
Background/Aims: Mongolia has one of the highest hepatitis A, C, B and D infection incidences worldwide. We sought to investigate changes in the proportion of acute viral hepatitis types in Mongolia over the last decade. Methods: The cohort comprised 546 consecutive patients clinically diagnosed with acute viral hepatitis from January 2012 to December 2014 in Ulaanbaatar Hospital, Mongolia. A time trend analysis investigating the change in proportion of acute hepatitis A virus, hepatitis C virus (HCV), hepatitis B virus (HBV) and hepatitis delta virus (HDV) infection among the cohort with respect to a previous published study was undertaken...
May 2, 2017: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28534812/understanding-the-complex-patterns-observed-during-hepatitis-b-virus-therapy
#2
Andrea Carracedo Rodriguez, Matthias Chung, Stanca M Ciupe
Data from human clinical trials have shown that the hepatitis B virus (HBV) follows complex profiles, such as bi-phasic, tri-phasic, stepwise decay and rebound. We utilized a deterministic model of HBV kinetics following antiviral therapy to uncover the mechanistic interactions behind HBV dynamics. Analytical investigation of the model was used to separate the parameter space describing virus decay and rebound. Monte Carlo sampling of the parameter space was used to determine the virological, pharmacological and immunological factors that separate the bi-phasic and tri-phasic virus profiles...
May 19, 2017: Viruses
https://www.readbyqxmd.com/read/28534427/increased-risk-of-hepatitis-b-virus-reactivation-in-systemic-lupus-erythematosus-patients-receiving-immunosuppressants-a-retrospective-cohort-study
#3
W T Lin, Y M Chen, D Y Chen, J L Lan, C S Chang, H Z Yeh, S S Yang
Objective We aimed to investigate risk of hepatitis B virus reactivation in systemic lupus erythematosus patients with different hepatitis B virus infection statuses receiving immunosuppressive therapy. Methods We retrospectively analyzed systemic lupus erythematosus patients with positive hepatitis B surface antigen or anti-hepatitis B core IgG antibody who underwent immunosuppressive therapies from January 2001 to December 2012 at a medical center in Taiwan for evidence of hepatitis B virus reactivation. Results During this period, 906 out of 3125 patients who were diagnosed with systemic lupus erythematosus received screening tests for hepatitis B virus...
January 1, 2017: Lupus
https://www.readbyqxmd.com/read/28534136/influence-of-higher-bmi-for-hepatitis-b-and-c-related-hepatocellular-carcinomas
#4
Masakazu Hashimoto, Hirotaka Tashiro, Tsuyoshi Kobayashi, Shintaro Kuroda, Michinori Hamaoka, Hideki Ohdan
PURPOSE: Although obesity is associated with hepatocellular carcinoma (HCC) development, its impact on the surgical outcomes of patients with hepatitis B virus (HBV)-and hepatitis C virus (HCV)-related HCC remains unclear. METHODS: We retrospectively analyzed 714 patients with HCC who underwent curative hepatectomy. Among them, the HBV-related HCC group (n = 125) and HCV-related HCC group (n = 426) were subdivided according to the presence of body mass index (BMI) ≥ 25 kg/m(2)...
May 22, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28534090/tooth-loss-and-liver-cancer-incidence-in-a-finnish-cohort
#5
Baiyu Yang, Jessica L Petrick, Christian C Abnet, Barry I Graubard, Gwen Murphy, Stephanie J Weinstein, Satu Männistö, Demetrius Albanes, Katherine A McGlynn
PURPOSE: Periodontal disease, a major cause of tooth loss in adults, may have systemic effects and has been associated with higher risk of several cancer types. However, the associations of periodontal disease or tooth loss with liver cancer have only been examined prospectively in two studies, neither of which had sufficient statistical power. In addition, no studies assessed the potential confounding by viral hepatitis or Helicobacter pylori infection status. METHODS: In this study, we examined the association between tooth loss and primary liver cancer incidence in a prospective cohort of Finnish male smokers (n = 29,096)...
May 22, 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28533877/-prevalence-of-hepatitis-b-surface-antigen-and-its-associated-factors-in-senegalese-military-personnel-sent-on-mission-to-darfur
#6
Moustapha Diop, Assane Diouf, Said Malaobé Seck, Gora Lo, Daye Ka, Aminata Massaly, Alassane Dieye, Ndeye Maguette Fall, Viviane Marie Pierre Cisse-Diallo, Khardiata Diallo-Mbaye, Ndèye Aissatou Lakhe, Louise Fortes-Déguénonvo, Cheikh Tidiane Ndour, Maserigne Soumaré, Moussa Seydi
INTRODUCTION: In Senegal, 85% of the adult population have been exposed to the hepatitis B virus and about 11% of them are chronic surface antigen (HBsAg) carriers. This infection is poorly documented among Senegalese Armed Forces. The aim of this study was to assess the prevalence of HBsAg in Senegalese military personnel on mission to Darfur (Sudan) and to identify its associated factors. METHODS: We conducted a cross-sectional study among Senegalese military personnel stationed in Darfur from 1 July 2014 to 31 July 2014...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28533779/cytomegalovirus-driven-adaptive-like-natural-killer-cell-expansions-are-unaffected-by-concurrent-chronic-hepatitis-virus-infections
#7
David F G Malone, Sebastian Lunemann, Julia Hengst, Hans-Gustaf Ljunggren, Michael P Manns, Johan K Sandberg, Markus Cornberg, Heiner Wedemeyer, Niklas K Björkström
Adaptive-like expansions of natural killer (NK) cell subsets are known to occur in response to human cytomegalovirus (CMV) infection. These expansions are typically made up of NKG2C(+) NK cells with particular killer-cell immunoglobulin-like receptor (KIR) expression patterns. Such NK cell expansion patterns are also seen in patients with viral hepatitis infection. Yet, it is not known if the viral hepatitis infection promotes the appearance of such expansions or if effects are solely attributed to underlying CMV infection...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28533667/octogenarian-liver-grafts-is-their-use-for-transplant-currently-justified
#8
Carlos Jiménez-Romero, Felix Cambra, Oscar Caso, Alejandro Manrique, Jorge Calvo, Alejandro Marcacuzco, Paula Rioja, David Lora, Iago Justo
AIM: To analyse the impact of octogenarian donors in liver transplantation. METHODS: We present a retrospective single-center study, performed between November 1996 and March 2015, that comprises a sample of 153 liver transplants. Recipients were divided into two groups according to liver donor age: recipients of donors ≤ 65 years (group A; n = 102), and recipients of donors ≥ 80 years (group B; n = 51). A comparative analysis between the groups was performed...
May 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28531167/a-role-for-the-host-dna-damage-response-in-hepatitis-b-virus-cccdna-formation-and-beyond
#9
REVIEW
Sabrina Schreiner, Michael Nassal
Chronic hepatitis B virus (HBV) infection puts more than 250 million people at a greatly increased risk to develop end-stage liver disease. Like all hepadnaviruses, HBV replicates via protein-primed reverse transcription of a pregenomic (pg) RNA, yielding an unusually structured, viral polymerase-linked relaxed-circular (RC) DNA as genome in infectious particles. Upon infection, RC-DNA is converted into nuclear covalently closed circular (ccc) DNA. Associating with cellular proteins into an episomal minichromosome, cccDNA acts as template for new viral RNAs, ensuring formation of progeny virions...
May 22, 2017: Viruses
https://www.readbyqxmd.com/read/28529542/frequency-and-geographic-distribution-of-tert-promoter-mutations-in-primary-hepatocellular-carcinoma
#10
REVIEW
Francesca Pezzuto, Luigi Buonaguro, Franco M Buonaguro, Maria Lina Tornesello
Primary hepatocellular carcinoma (HCC) mainly develops in subjects chronically infected with hepatitis B (HBV) and C (HCV) viruses through a multistep process characterized by the accumulation of genetic alterations in the human genome. Nucleotide changes in coding regions (i.e. TP53, CTNNB1, ARID1A and ARID2) as well as in non-coding regions (i.e. TERT promoter) are considered cancer drivers for HCC development with variable frequencies in different geographic regions depending on the etiology and environmental factors...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28529116/italian-consensus-guidelines-for-the-management-of-hepatitis-b-virus-infections-in-patients-with-rheumatoid-arthritis
#11
Marco Sebastiani, Fabiola Atzeni, Laura Milazzo, Luca Quartuccio, Carlo Scirè, Giovanni Battista Gaeta, Giovanni Lapadula, Orlando Armignacco, Marcello Tavio, Ignazio Olivieri, Pierluigi Meroni, Laura Bazzichi, Walter Grassi, Alessandro Mathieu, Claudio Mastroianni, Evangelista Sagnelli, Teresa Santantonio, Caterina Uberti Foppa, Massimo Puoti, Loredana Sarmati, Paolo Airò, Oscar Massimiliano Epis, Rossana Scrivo, Miriam Gargiulo, Agostino Riva, Andreina Manfredi, Giovanni Ciancio, Gianguglielmo Zehender, Gloria Taliani, Luca Meroni, Salvatore Sollima, Piercarlo Sarzi-Puttini, Massimo Galli
OBJECTIVES: Hepatitis B (HBV) infection, which is prevalent worldwide, is also frequently seen in patients with rheumatoid arthritis (RA). The Italian Society of Rheumatology (SIR) and the Italian Society of Infectious and Tropical Diseases (SIMIT) endorsed a national consensus process to review the available evidence on HBV management in RA patients and to produce practical, hospital-wide recommendations. METHODS: The consensus panel consisted of infectious disease consultants, rheumatologists and epidemiologists and used the criteria of the Oxford Centre for Evidence-based Medicine to assess the quality of the evidence and the strength of their recommendations...
May 18, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28528961/gp5-of-porcine-reproductive-and-respiratory-syndrome-virus-prrsv-as-a-target-for-homologous-and-broadly-neutralizing-antibodies
#12
REVIEW
Luca N Popescu, Benjamin R Trible, Nanhua Chen, Raymond R R Rowland
Virus neutralization (VN) responses range from narrowly focused antibodies with only homologous neutralizing activity against the virus used for infection, to antibodies that can neutralize both Type 1 and Type 2 viruses, referred to as broadly neutralizing antibody (bnAb). Even though neutralizing epitopes are likely distributed among several structural glycoproteins, this paper focuses on the ectodomain region of GP5 as a model system for investigating the role for neutralizing and non-neutralizing antibodies in protection and disease...
April 29, 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28527666/hepatic-steatosis-progresses-faster-in-hiv-mono-infected-than-hiv-hcv-co-infected-patients-and-is-associated-with-liver-fibrosis
#13
Thomas Pembroke, Marc Deschenes, Bertrand Lebouché, Amine Benmassaoud, Maida Sewitch, Peter Ghali, Philip Wong, Alex Halme, Elise Vuille-Lessard, Costa Pexos, Marina B Klein, Giada Sebastiani
BACKGROUND & AIMS: Hepatic steatosis (HS) seems common in patients infected with human immunodeficiency virus (HIV). However, the relative effect of HIV, as well as hepatitis C virus (HCV) in those co-infected, and the influence of HS on liver fibrosis progression are unclear. METHODS: The LIVEr disease in HIV (LIVEHIV) is a Canadian prospective Cohort using transient elastography and associated controlled attenuation parameter (CAP) to screen for HS and liver fibrosis in unselected HIV-infected adults...
May 17, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28527664/a-new-hdv-mouse-model-identifies-mitochondrial-antiviral-signaling-protein-mavs-as-a-key-player-in-ifn-%C3%AE-induction
#14
Lester Suárez-Amarán, Carla Usai, Marianna Di Scala, Cristina Godoy, Yi Ni, Mirja Hommel, Laura Palomo, Víctor Segura, Cristina Olagüe, Africa Vales, Alicia Ruiz-Ripa, Maria Buti, Eduardo Salido, Jesús Prieto, Stephan Urban, Francisco Rodríguez-Frias, Rafael Aldabe, Gloria González-Aseguinolaza
BACKGROUND & AIMS: Studying hepatitis delta virus (HDV) and developing new treatments is hampered by the limited availability of small animal models. Here a description of a robust mouse model of HDV infection that mimics several important characteristics of the human disease is presented. METHODS: HDV- and HBV-replication competent genomes were delivered to the mouse liver using adeno-associated viruses (AAV) (AAV-HDV and AAV-HBV). Viral load, antigen expression and genomes were quantified at different time points after AAV injection...
May 17, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28526938/reducing-liver-cancer-risk-in-african-born-immigrants-through-culturally-targeted-hepatitis-b-group-education-programs
#15
Kemi Bolutayo, Alexandre Ly van Manh, Noah Cohen, Daouda Ndiaye, Lina Jandorf, Ponni V Perumalswami
Of 900 West African-born immigrants living in New York City who were tested for hepatitis B virus (HBV), over 9% were found to have the infection (Shankar H et al. Clin Infectious Dis 62(S4):S289-s297, 2016). Community targeted group education programs (EP) have been shown to improve immigrant population's health (Bailey E et al. J Natl Med Assoc 92(3):136-42, 2000). Our aim is to enhance HBV screening in at-risk West African immigrants through the development of a group EP as a first critical step to reducing liver cancer risk...
May 19, 2017: Journal of Cancer Education: the Official Journal of the American Association for Cancer Education
https://www.readbyqxmd.com/read/28526760/tissue-resident-t-cells-in-hepatitis-b-a-new-target-for-cure
#16
Fabian J Bolte, Barbara Rehermann
A hallmark of chronic hepatitis B virus (HBV) infection is the functional impairment and depletion of antiviral T cells. In this issue of JEM, Pallett et al. (https://doi.org/10.1084/jem.20162115) identify a reservoir of functional HBV-specific T cells among liver-resident T cells.
May 19, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28526759/il-2-high-tissue-resident-t-cells-in-the-human-liver-sentinels-for-hepatotropic-infection
#17
Laura J Pallett, Jessica Davies, Emily J Colbeck, Francis Robertson, Navjyot Hansi, Nicholas J W Easom, Alice R Burton, Kerstin A Stegmann, Anna Schurich, Leo Swadling, Upkar S Gill, Victoria Male, TuVinh Luong, Amir Gander, Brian R Davidson, Patrick T F Kennedy, Mala K Maini
The liver provides a tolerogenic immune niche exploited by several highly prevalent pathogens as well as by primary and metastatic tumors. We have sampled healthy and hepatitis B virus (HBV)-infected human livers to probe for a subset of T cells specialized to overcome local constraints and mediate immunity. We characterize a population of T-bet(lo)Eomes(lo)Blimp-1(hi)Hobit(lo) T cells found within the intrahepatic but not the circulating memory CD8 T cell pool expressing liver-homing/retention markers (CD69(+)CD103(+) CXCR6(+)CXCR3(+))...
May 19, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28525625/characteristics-of-us-born-versus-foreign-born-americans-of-african-descent-with-chronic-hepatitis-b
#18
Mohamed A Hassan, W Ray Kim, Ruosha Li, Coleman I Smith, Michael W Fried, Richard K Sterling, Marc G Ghany, Abdus S Wahed, Lilia M Ganova-Raeva, Lewis R Roberts, Anna S F Lok
Hepatitis B virus (HBV) infection is more common in African Americans than in white Americans. We compared the epidemiologic, clinical, and virological characteristics of US-born African Americans (USAAs) to those of foreign-born African Americans (FBAAs) with chronic hepatitis B. The adult cohort study of the Hepatitis B Research Network enrolls patients with HBV infection from 21 clinical sites in the United States and Canada. A total of 237 (15%) of the adult participants with chronic HBV infection that were enrolled from January 20, 2011, to October 2, 2013, were of African descent, including 57 USAAs and 180 FBAAs (76%)...
May 19, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28524366/contrasting-hcv-and-hiv-seroepidemiology-in-11-years-of-blood-donors-screening-in-brazil
#19
J E Levi, S M Lira, C B Bub, M B Polite, C C Terzian, J M Kutner
BACKGROUND: Blood donors are, in principle, healthy individuals who may be revealed as infectious for blood-borne agents by the laboratory screening process, depicting the asymptomatic burden of the disease. Therefore, monitoring hepatitis C virus (HCV)-infected donor and human immunodeficiency virus (HIV)-infected donor and associating to their demographical and behavioural characteristics may shed light on the dynamics and contemporary changes in these viruses' epidemiology. METHODS: Donors presenting repeatedly reactive HCV or HIV serology/nucleic acid testing (NAT) screening results were submitted to confirmatory testing...
May 19, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28523056/low-bone-mineral-density-in-chronic-hepatitis-b-virus-infection-a-case-control-study
#20
Zengfa Huang, Hui Wei, Cheng Cheng, Shuhua Yang, Jing Wang, Xianzhe Liu
OBJECTIVE: Osteoporosis is the well-known major complication in chronic hepatitis B virus (HBV) infection. Fewer reports are available of the relationship between bone loss and chronic HBV infection. We investigated the bone mineral density (BMD) and prevalence of osteoporosis in chronic HBV patients in comparison with healthy subjects. METHODS: We assessed 148 chronic HBV patients and 148 age- and gender-matched healthy controls by dual energy X-ray absorptiometry (DEXA) for determination of BMD...
March 2017: Pakistan Journal of Medical Sciences Quarterly
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