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natural history of hepatitis b

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https://www.readbyqxmd.com/read/29300924/differentially-expressed-intrahepatic-genes-contribute-to-control-of-hepatitis-b-virus-replication-in-the-inactive-carrier-phase
#1
Hongyan Liu, Fahong Li, Xiaoyong Zhang, Jie Yu, Jinyu Wang, Jia Jia, Xueping Yu, Zhongliang Shen, Zhenghong Yuan, Xiaonan Zhang, Zhanqing Zhang, Xinxin Zhang, Lungen Lu, Hai Li, Mengji Lu, Jiming Zhang
Background: The natural history of chronic HBV infection was divided into four phases. Patients in the inactive carrier status (IC) and immune tolerant (IT) phase had normal ALT levels but huge different viral loads. The mechanism underlying low viral replication status in IC phase is unknown. Methods: We determined the intrahepatic transcriptomes of 83 chronic hepatitis B patients by microarray analysis of liver biopsies, and screened the effect of differentially regulated genes on HBV replication using specific siRNAs in vitro...
January 2, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29216251/molecular-characterization-of-hepatitis-b-virus-in-bangladesh-reveals-a-highly-recombinant-population
#2
Saif Ullah Munshi, Thanh Thi Thanh Tran, Truc Nhu Thanh Vo, Shahina Tabassum, Nahida Sultana, Trang Hoa Nguyen, Munira Jahan, Chau Ngoc Le, Stephen Baker, Motiur Rahman
The natural history and treatment outcome of hepatitis B viruses (HBV) infection is largely dependent on genotype, subgenotype, and the presence or absence of virulence associated mutations. We have studied the prevalence of genotype and subgenotype as well as virulence and drug resistance associated mutations and prevalence of recombinant among HBV from Bangladesh. A prospective cross-sectional study was conducted among treatment naïve chronic HBV patients attending at Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh for HBV viral load assessment between June and August 2015...
2017: PloS One
https://www.readbyqxmd.com/read/29209112/epidemiology-and-natural-history-of-wilson-s-disease-in-the-chinese-a-territory-based-study-in-hong-kong-between-2000-and-2016
#3
Ka-Shing Cheung, Wai-Kay Seto, James Fung, Lung-Yi Mak, Ching-Lung Lai, Man-Fung Yuen
AIM: To investigate the epidemiology and natural history of Wilson's disease in the Chinese. METHODS: Data were retrieved via electronic search of hospital medical registry of the Hong Kong Hospital Authority, which covers all the public healthcare services. We identified cases of Wilson's disease between 2000 and 2016 by the International Classification of Diseases (ICD)-9 code. We analyzed the incidence rate, prevalence and adverse outcomes of Wilson's disease...
November 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29202690/distinct-patterns-of-serum-hepatitis-b-core-related-antigen-during-the-natural-history-of-chronic-hepatitis-b
#4
Zhan-Qing Zhang, Xiao-Nan Zhang, Wei Lu, Yan-Bing Wang, Qi-Cheng Weng, Yan-Ling Feng
BACKGROUND: The current clinical practice on chronic hepatitis B (CHB) requires better on-treatment monitoring of viral persistence. Quantified assays for hepatitis B surface antigen (HBsAg) and core-related antigen (HBcrAg) hold promise for further optimization of therapy. Here, we aimed to characterize HBcrAg during the natural course of CHB. METHODS: Four-hundred and forty four treatment naïve CHB patients, who all underwent liver histology examination, were enrolled in this cross-sectional study...
December 4, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/29194668/is-an-endoscopic-examination-associated-with-transfusion-transmissible-infections-a-systematic-review-and-meta-analysis
#5
REVIEW
Hans Van Remoortel, Vere Borra, Emmy De Buck, Veerle Compernolle, Philippe Vandekerckhove
BACKGROUND: The purpose of a donor medical questionnaire is to identify the blood donor's history relative to the current known blood-safety risks. A temporary deferral from blood donation after an endoscopic examination is enforced because of the reusable nature of the endoscope and close contact with the inner body. The objective of this systematic review was to find the best available evidence on the association between an endoscopic examination and the risk of transfusion-transmissible infections...
November 30, 2017: Transfusion
https://www.readbyqxmd.com/read/29089040/veritable-antiviral-capacity-of-natural-killer-cells-in-chronic-hbv-infection-an-argument-for-an-earlier-anti-virus-treatment
#6
Xiaoyan Li, Liang Zhou, Lin Gu, Yurong Gu, Lubiao Chen, Yifan Lian, Yuehua Huang
BACKGROUND: There is limited information on innate immunity, especially natural killer (NK) cell function, in different chronic hepatitis B (CHB) stages. Therefore, we examined whether the clinical staging strategy accurately reflects veritable NK cell immunity. METHODS: A total of 237 eligible CHB patients and 22 healthy controls were enrolled in our study. Demographic and clinical data were collected, and the CHB phases (immune active-IA, immune tolerant phase-IT, inactive CHB-IC, and grey zone-GZ) were classified according to the latest American Association for the Study of Liver Disease guidelines...
October 31, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29035003/hepatitis-b-core-related-antigen-hbcrag-an-emerging-marker-for-chronic-hepatitis-b-virus-infection
#7
REVIEW
L-Y Mak, D K-H Wong, K-S Cheung, W-K Seto, C-L Lai, M-F Yuen
BACKGROUND: Chronic hepatitis B (CHB) cannot be completely eradicated due to the presence of covalently closed circular DNA (cccDNA) in the nuclei of infected hepatocytes. While quantification of intrahepatic cccDNA requires liver biopsies, serological markers can be non-invasive alternatives to reflect intrahepatic viral replicative activity. Recently, hepatitis B core-related antigen (HBcrAg) has been advocated as a novel serum marker for disease monitoring and prognostication of CHB...
October 16, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28974899/natural-history-of-covert-hepatic-encephalopathy-an-observational-study-of-366-cirrhotic-patients
#8
An-Jiang Wang, A-Ping Peng, Bi-Min Li, Na Gan, Li Pei, Xue-Lian Zheng, Jun-Bo Hong, Hai-Ying Xiao, Jia-Wei Zhong, Xuan Zhu
AIM: To explore the natural history of covert hepatic encephalopathy (CHE) in absence of medication intervention. METHODS: Consecutive outpatient cirrhotic patients in a Chinese tertiary care hospital were enrolled and evaluated for CHE diagnosis. They were followed up for a mean of 11.2 ± 1.3 mo. Time to the first cirrhosis-related complications requiring hospitalization, including overt HE (OHE), resolution of CHE and death/transplantation, were compared between CHE and no-CHE patients...
September 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28928855/association-between-extranodal-natural-killer-t-cell-lymphoma-and-hepatitis-b-viral-infection-a-case-control-study
#9
Kefeng Wang, Hang Yang, Wenjun He, Yi Xia, Zhongjun Xia, Su Li, Huiqiang Huang, Zhiming Li, Panpan Liu, Wenqi Jiang
Extranodal natural killer/T-cell lymphoma, nasal type (ENKTL) is a rare subtype of lymphoma that is often associated with poor clinical prognosis. Several studies have shown that hepatitis B virus (HBV) infection may be associated with increased risk of B-cell non-Hodgkin lymphoma; however, because of the rarity of ENKTL, little is known about its association with HBV. Our study aimed to assess whether HBV infection was associated with increased odds of ENKTL. We conducted a hospital-based case-control study including 417 ENKTL cases and 488 age- and sex-matched subjects with nonmalignant diseases unrelated to HBV infection...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28911765/prevalence-of-hepatitis-d-virus-infection-in-sub-saharan-africa-a-systematic-review-and-meta-analysis
#10
Alexander J Stockdale, Mas Chaponda, Apostolos Beloukas, Richard Odame Phillips, Philippa C Matthews, Athanasios Papadimitropoulos, Simon King, Laura Bonnett, Anna Maria Geretti
BACKGROUND: Hepatitis D virus (also known as hepatitis delta virus) can establish a persistent infection in people with chronic hepatitis B, leading to accelerated progression of liver disease. In sub-Saharan Africa, where HBsAg prevalence is higher than 8%, hepatitis D virus might represent an important additive cause of chronic liver disease. We aimed to establish the prevalence of hepatitis D virus among HBsAg-positive populations in sub-Saharan Africa. METHODS: We systematically reviewed studies of hepatitis D virus prevalence among HBsAg-positive populations in sub-Saharan Africa...
October 2017: Lancet Global Health
https://www.readbyqxmd.com/read/28887164/type-a-viral-hepatitis-a-summary-and-update-on-the-molecular-virology-epidemiology-pathogenesis-and-prevention
#11
REVIEW
Stanley M Lemon, Jördis J Ott, Pierre Van Damme, Daniel Shouval
Although epidemic jaundice was well known to physicians of antiquity, it is only in recent years that medical science has begun to unravel the origins of hepatitis A virus (HAV) and the unique pathobiology underlying acute hepatitis A in humans. Improvements in sanitation and the successful development of highly efficacious vaccines have markedly reduced the worldwide prevalence and incidence of this enterically-transmitted infection over the past quarter century, yet the virus persists in vulnerable populations and remains a common cause of food-borne disease outbreaks in economically-advantaged societies...
September 5, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28845855/-role-of-combination-nk-kirs-in-the-natural-history-of-viral-infections
#12
Claudia Colomba, Antonio Cascio, Calogero Caruso, Marcello Trizzino, Claudia Gioè, Giuliana Guadagnino, Antonino Tuttolomondo, Antonio Pinto, Annalisa Saracino, Gioacchino Angarano, Danilo Di Bona
Immunological mechanisms involved in the genesis of the immune response against viral infections take into account the activation of both innate adaptative response. Innate immune defenses trigger a rapid local response, which is often sufficient to control viral infection, and promotes the subsequent activation of specific immune defenses. Natural killer (NK) cells that constitute a subpopulation of lymphocyte-related cells are a key factor of innate immune response and play a role in defense against viral infections by killing infected cells or by producing cytokines and interacting with adaptative immune system's cells...
July 2017: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/28792701/predictive-value-of-hepatitis-b-core-related-antigen-hbcrag-during-the-natural-history-of-hepatitis-b-virus-infection
#13
Yu Gou, Yanhua Zhao, Chenli Rao, Shu Feng, Tingting Wang, Dongdong Li, Chuanmin Tao
BACKGROUND: The natural history of HBV infection includes immune tolerance (IT), immune clearance (IC), HBeAg-negative inactive/quiescent carrier (ENQ), and HBeAg-negative hepatitis (ENH) phases. As the current biomarkers for discriminating the four phases still have some weaknesses, additional serological indicators are needed. Hepatitis B core-related antigen (HBcrAg) encoded with the precore/core gene contains denatured HBeAg, HBV core antigen (HBcAg), and a 22-KDa precore protein (p22cr) and has been demonstrated to have a close association with the natural history of hepatitis B infection...
July 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28774413/management-of-hepatitis-b-in-special-populations
#14
REVIEW
Kali Zhou, Norah Terrault
Special populations infected with chronic HBV include those with decompensated cirrhosis, coinfections (HIV, HCV, HDV), hemodialysis and renal failure, immunosuppressed including transplant patients, children and women in pregnancy. These populations differ in their natural history and risk for liver-related complications, the indications for anti-HBV therapy as well as the recommendations regarding the HBV drugs used, duration of therapy and anticipated endpoints. Reflecting the special populations with substantive changes in management in recent years, this review focuses on HBV-HIV coinfected patients, immunosuppressed patients at risk for reactivation, liver transplant recipients and pregnant women...
June 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/28774406/natural-history-of-acute-and-chronic-hepatitis-b-the-role-of-hbv-genotypes-and-mutants
#15
REVIEW
Chih-Lin Lin, Jia-Horng Kao
Molecular epidemiologic studies reveal remarkable differences in the geographical distribution of hepatitis B virus (HBV) genotypes. The frequency of mutants among HBV genotypes also varies. The role of HBV genotypes/mutants in the pathogenesis of HBV infection and natural history of HBV infection has been extensively investigated. The distribution of HBV genotypes in acute hepatitis B patients reflects the predominant genotypes in a given geographic area. In chronic hepatitis B patients, genotype C and D have a higher frequency of basal core promoter A1762T/G1764A mutations than genotype A and B...
June 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/28738454/-development-of-markov-models-for-economics-evaluation-of-strategies-on-hepatitis-b-vaccination-and-population-based-antiviral-treatment-in-china
#16
P C Yang, S X Zhang, P P Sun, Y L Cai, Y Lin, Y H Zou
Objective: To construct the Markov models to reflect the reality of prevention and treatment interventions against hepatitis B virus (HBV) infection, simulate the natural history of HBV infection in different age groups and provide evidence for the economics evaluations of hepatitis B vaccination and population-based antiviral treatment in China. Methods: According to the theory and techniques of Markov chain, the Markov models of Chinese HBV epidemic were developed based on the national data and related literature both at home and abroad, including the settings of Markov model states, allowable transitions and initial and transition probabilities...
July 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28692539/hiv-hepatitis-b-virus-coinfection-epidemiology-pathogenesis-and-treatment
#17
Kasha P Singh, Megan Crane, Jennifer Audsley, Anchalee Avihingsanon, Joe Sasadeusz, Sharon R Lewin
: HIV infection has a significant impact on the natural history of chronic hepatitis B virus (HBV) infection, with increased levels of HBV DNA, accelerated progression of liver disease and increased liver-associated mortality compared with HBV monoinfection. Widespread uptake and early initiation of HBV-active antiretroviral therapy has substantially improved the natural history of HIV-HBV coinfection but the prevalence of liver disease remains elevated in this population. In this paper, we review recent studies examining the natural history and pathogenesis of liver disease and seroconversion in HIV-HBV coinfection in the era of HBV-active antiretroviral therapy and the effects of HIV directly on liver disease...
September 24, 2017: AIDS
https://www.readbyqxmd.com/read/28685270/tolerance-and-immunity-to-pathogens-in-early-life-insights-from-hbv-infection
#18
REVIEW
Michelle Hong, Antonio Bertoletti
Immunity is not static but varies with age. The immune system of a newborn infant is not "defective" or "immature." Rather, there are distinct features of innate and adaptive immunity from fetal life to adulthood, which may alter the susceptibility of newborn infants to infections compared to adults. Increased protection to certain infectious diseases during early life may benefit from a dampened immune response as a result of decreased immune pathology. This concept may offer an alternative interpretation of the different pathological manifestations clinically observed in hepatitis B virus (HBV)-infected patients during the natural history of infection...
July 6, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28662087/unique-intrahepatic-transcriptomics-profiles-discriminate-the-clinical-phases-of-a-chronic-hbv-infection
#19
Jun Hou, Willem P Brouwer, Kim Kreefft, Lucio Gama, Sarah L Price, Harry L A Janssen, Pim J French, Thomas Vanwolleghem, Andre Boonstra
Chronic hepatitis B is a highly heterogeneous liver disease characterized by phases with fluctuations in viral replication and progressive liver damage in some, but not all infected individuals. Despite four decades of research, insight into host determinants underlying these distinct clinical phases-immunotolerant, immune active, inactive carrier, and HBeAg-negative hepatitis-remains elusive. We performed an in-depth transcriptome analysis of archived FFPE liver biopsies of each clinical phase to address host determinants associated with the natural history...
2017: PloS One
https://www.readbyqxmd.com/read/28631602/nationwide-overview-of-the-distribution-of-hepatitis-b-virus-genotypes-in-brazil-a-1000-sample-multicentre-study
#20
MULTICENTER STUDY
Elisabeth Lampe, Francisco C A Mello, Marcia P do Espírito-Santo, Cintia M C Oliveira, Dennis A Bertolini, Neiva S L Gonçales, Regina C Moreira, Carlos A S Fernandes, Haydée C L Nascimento, Rejane M T Grotto, Maria Inês M C Pardini, On Behalf Of The Brazilian Hepatitis B Research Group
The influence of hepatitis B virus (HBV) genotypes in the natural history of the disease and its response to antiviral treatment have been addressed in many studies. In Brazil, studies on HBV genotype circulation have been restricted to specific population groups and states. Here, we have conducted a nationwide multicentre study with an unprecedented sample size representing all Brazilian regions in an effort to better understand the viral variants of HBV circulating among chronic carriers. Seven HBV genotypes were found circulating in Brazil...
June 2017: Journal of General Virology
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