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hepatitis b patterns

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https://www.readbyqxmd.com/read/28442771/double-stranded-dna-induces-a-prothrombotic-phenotype-in-the-vascular-endothelium
#1
Erik Gaitzsch, Thomas Czermak, Andrea Ribeiro, Yvonn Heun, Monica Bohmer, Monika Merkle, Hanna Mannell, Christian Schulz, Markus Wörnle, Joachim Pircher
Double-stranded DNA (dsDNA) constitutes a potent activator of innate immunity, given its ability to bind intracellular pattern recognition receptors during viral infections or sterile tissue damage. While effects of dsDNA in immune cells have been extensively studied, dsDNA signalling and its pathophysiological implications in non-immune cells, such as the vascular endothelium, remain poorly understood. The aim of this study was to characterize prothrombotic effects of dsDNA in vascular endothelial cells. Transfection of cultured human endothelial cells with the synthetic dsDNA poly(dA:dT) induced upregulation of the prothrombotic molecules tissue factor and PAI-1, resulting in accelerated blood clotting in vitro, which was partly dependent on RIG-I signalling...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28403982/significance-of-anti-hbc-alone-serological-status-in-clinical-practice
#2
REVIEW
Qixia Wang, Paul Klenerman, Nasser Semmo
Serum samples identified as positive for total anti-HBc, but negative for both HBsAg and anti-HBs, are referred to as anti-HBc alone. This serological response is compatible with acute, resolved, and chronic hepatitis B virus (HBV)infection but might also signify occult HBV infection. Once the anti-HBc alone pattern is detected, false-positive reactivity should be ruled out and further analyses can resolve the clinical status of the donor. The identification of anti-HBc positivity in the absence of HBsAg in organ transplant donors and in candidate patients for chemotherapy and immunosuppressive therapy requires further investigation because of the risk of HBV reactivation...
February 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28400566/serum-metabolomics-analysis-reveals-a-distinct-metabolic-profile-of-patients-with-primary-biliary-cholangitis
#3
Juan Hao, Tao Yang, Yang Zhou, Guo-Yuan Gao, Feng Xing, Yuan Peng, Yan-Yan Tao, Cheng-Hai Liu
Primary biliary cholangitis (PBC) is a chronic autoimmune liver disease associated with profound metabolic changes. The purpose of this study was to identify a distinctive metabolic signature from the training set with 29 PBC patients, 30 hepatitis B virus (HBV)-caused cirrhosis (HBC) and 41 healthy controls, and to validate the applicability and stability of the distinctive model from the validation set with 21 PBC patients, 7 autoimmune hepatitis (AIH) and 9 HBC. The sera were investigated using high resolution nuclear magnetic resonance (NMR) and the datasets were analyzed pairwise using pattern recognition methods...
April 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28392234/selection-of-the-highly-replicative-and-partially-multidrug-resistant-rts78t-polymerase-mutation-in-two-patients-with-chronic-hepatitis-b-virus-infection-during-tenofovir-entecavir-combination-therapy
#4
Elham Shirvani-Dastgerdi, Benjamin Y Winer, Antoni Celia-Terrassa, Yibin Kang, David Tabernero, Eray Yagmur, Francisco Rodríguez-Frías, Josep Gregori, Tom Luedde, Christian Trautwein, Alexander Ploss, Frank Tacke
Patients chronically infected with the hepatitis B virus (HBV) that are on long-term treatment with nucleoside or nucleotide analogues are at risk of selecting HBV strains with complex mutational patterns. We herein report two cases of HBV-infected patients with insufficient viral suppression despite dual antiviral therapy with entecavir (ETV) and tenofovir (TDF), of which one patient died from aggressive hepatocellular carcinoma (HCC). Ultra-deep pyrosequencing analyses revealed the selection of the rtS78T polymerase mutation in both cases that creates a premature stop codon at sC69 and thereby deletes almost the entire small HBV surface protein...
April 6, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28388957/hbxip-overexpression-is-correlated-with-the-clinical-features-and-survival-outcome-of-ovarian-cancer
#5
Yixuan Wang, Jie Sun, Nan Li, Shuanlong Che, Tiefeng Jin, Shuangping Liu, Zhenhua Lin
BACKGROUND: Accumulated evidence has demonstrated that Mammalian hepatitis B X-interacting protein (HBXIP) has broad roles in cancer. Although HBXIP is associated with a variety of cancers, the HBXIP protein expression level and its clinical significance in ovarian cancer have not yet been determined. The aim of this study is to investigate the association between HBXIP expression and the clinicopathological features of ovarian cancer patients to determine whether HBXIP may be correlated with a poor prognosis in ovarian cancer patients...
April 7, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28378088/central-activation-of-the-a1-adenosine-receptor-in-fed-mice-recapitulates-only-some-of-the-attributes-of-daily-torpor
#6
Maria A Vicent, Ethan D Borre, Steven J Swoap
Mice enter bouts of daily torpor, drastically reducing metabolic rate, core body temperature (T b), and heart rate (HR), in response to reduced caloric intake. Because central adenosine activation has been shown to induce a torpor-like state in the arctic ground squirrel, and blocking the adenosine-1 (A1) receptor prevents daily torpor, we hypothesized that central activation of the A1 adenosine receptors would induce a bout of natural torpor in mice. To test the hypothesis, mice were subjected to four different hypothermia bouts: natural torpor, forced hypothermia (FH), isoflurane-anesthesia, and an intracerebroventricular injection of the selective A1 receptor agonist N(6-)cyclohexyladenosine (CHA)...
April 4, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28376292/hepatitis-b-virus-sequencing-and-liver-fibrosis-evaluation-in-hiv-hbv-co-infected-nigerians
#7
Jennifer Grant, Oche Agbaji, Anna Kramvis, Mukhlid Yousif, Mu'azu Auwal, Sudhir Penugonda, Placid Ugoagwu, Robert Murphy, Claudia Hawkins
OBJECTIVES: Molecular characteristics of hepatitis B virus (HBV), such as genotype and genomic mutations, may contribute to liver-related morbidity and mortality. The association of these characteristics with liver fibrosis severity in sub-Saharan Africa is uncertain. We aimed to characterize molecular HBV features in HIV/HBV co-infected Nigerians and evaluate associations between these characteristics and liver fibrosis severity before and after antiretroviral therapy (ART) initiation...
April 4, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28357974/immunisation-status-and-determinants-of-left-behind-children-aged-12-72-months-in-central-china
#8
Z L Ni, X D Tan, H Y Shao, Y Wang
Many parents move from rural China to urban areas in search of job opportunities, and leave their children behind to be raised by relatives. We aimed to assess the immunisation coverage, including the 1:3:3:3:1 vaccine series (one dose of Bacilli Chalmette-Guérin vaccine; three doses of live attenuated oral poliomyelitis vaccine; three doses of diphtheria, tetanus and pertussis combined; three doses of hepatitis B vaccine; and one dose of measles-containing vaccine), in children aged 12-72 months and identify the determinants of immunisation uptake among left-behind children in Hubei Province, Central China, in 2014...
March 30, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28351974/mutational-spectra-of-aflatoxin-b1-in-vivo-establish-biomarkers-of-exposure-for-human-hepatocellular-carcinoma
#9
Supawadee Chawanthayatham, Charles C Valentine, Bogdan I Fedeles, Edward J Fox, Lawrence A Loeb, Stuart S Levine, Stephen L Slocum, Gerald N Wogan, Robert G Croy, John M Essigmann
Aflatoxin B1 (AFB1) and/or hepatitis B and C viruses are risk factors for human hepatocellular carcinoma (HCC). Available evidence supports the interpretation that formation of AFB1-DNA adducts in hepatocytes seeds a population of mutations, mainly G:C→T:A, and viral processes synergize to accelerate tumorigenesis, perhaps via inflammation. Responding to a need for early-onset evidence predicting disease development, highly accurate duplex sequencing was used to monitor acquisition of high-resolution mutational spectra (HRMS) during the process of hepatocarcinogenesis...
April 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28347229/high-expression-of-g-protein-signaling-modulator-2-in-hepatocellular-carcinoma-facilitates-tumor-growth-and-metastasis-by-activating-the-pi3k-akt-signaling-pathway
#10
Xiao-Qin He, Yue-Feng Zhang, Jia-Jun Yu, Yuan-Yuan Gan, Na-Na Han, Mei-Xia Zhang, Wei Ge, Jun-Jian Deng, Yong-Fa Zheng, Xi-Ming Xu
The aim of this study was to investigate the role of G-protein signaling modulator 2 in the carcinogenesis and progression of hepatocellular carcinoma. We previously showed that G-protein signaling modulator 2 was upregulated in hepatitis B virus-related hepatocellular carcinoma tissues through a hierarchical clustering analysis. With this study, we first assessed the expression pattern of G-protein signaling modulator 2 in hepatocellular carcinoma specimens and adjacent noncancerous tissues; clinical data were analyzed, along survival times, utilizing the Kaplan-Meier method...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28335522/extracellular-vesicles-deliver-host-and-virus-rna-and-regulate-innate-immune-response
#11
REVIEW
Takahisa Kouwaki, Masaaki Okamoto, Hirotake Tsukamoto, Yoshimi Fukushima, Hiroyuki Oshiumi
The innate immune system plays a crucial role in controlling viral infection. Pattern recognition receptors (PRRs), such as Toll-like receptors and RIG-I-like receptors, sense viral components called pathogen-associated molecular patterns (PAMPs) and trigger signals to induce innate immune responses. Extracellular vesicles (EVs), including exosomes and microvesicles, deliver functional RNA and mediate intercellular communications. Recent studies have revealed that EVs released from virus-infected cells deliver viral RNA to dendritic cells and macrophages, thereby activating PRRs in recipient cells, which results in the expression of type I interferon and pro-inflammatory cytokines...
March 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28330473/dynamic-and-specific-immune-responses-against-multiple-tumor-antigens-were-elicited-in-patients-with-hepatocellular-carcinoma-after-cell-based-immunotherapy
#12
Yanyan Han, Yeting Wu, Chou Yang, Jing Huang, Yabing Guo, Li Liu, Ping Chen, Dongyun Wu, Junyun Liu, Jin Li, Xiangjun Zhou, Jinlin Hou
BACKGROUND: Hepatocellular carcinoma (HCC) is one of the most common cancers in China and frequently occurs with chronic hepatitis B virus infection. To investigate whether cell-based cancer immunotherapy induces tumor specific immune responses in patients with HCC and provides clinical benefits, as well as to elucidate the most immunogenic tumor associated antigens (TAAs), multiple antigen stimulating cellular therapy (MASCT) was applied in addition to standard of care. METHODS: Mature dendritic cells (DCs) and activated T cells prepared for MASCT were generated from autologous peripheral blood mononuclear cells (PBMCs)...
March 22, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28320050/the-practice-pattern-of-hepatitis-b-testing-in-rheumatoid-arthritis-patients-a-cross-national-comparison-between-us-and-taiwan
#13
Tzu-Chieh Lin, Nikroo Hashemi, Seoyoung C Kim, Yea-Huei Kao Yang, Kazuki Yoshida, Sara Tedeschi, Rishi Desai, Daniel H Solomon
OBJECTIVE: The Hepatitis B Virus (HBV) testing rates and patterns in rheumatoid arthritis (RA) patients starting disease modifying anti-rheumatic drugs (DMARDs) have not been well studied. We describe and compare the practice patterns of HBV testing among RA patients in U.S. and Taiwan. METHODS: We conducted a retrospective cohort study including RA patients starting first DMARD in U.S. or Taiwan. The first date patients newly received any DMARD was defined as the index date, and the 1-year period before the index date was the baseline period...
March 20, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28286056/detection-of-hbv-dna-and-antigens-in-hbsag-positive-patients-with-primary-hepatocellular-carcinoma
#14
Sha Fu, Ning Li, Peng-Cheng Zhou, Yan Huang, Rong-Rong Zhou, Xue-Gong Fan
BACKGROUND: Hepatitis B virus (HBV) markers include HBV deoxyribonucleic acid (DNA) and HBV antigens. The former involves HBV covalently closed circular DNA (cccDNA) as well as total HBV DNA, whereas the latter involves HBsAg, HBcAg, and HBx. METHODS: Samples of tumor and adjacent non-tumor liver tissue were collected from 28 HBV-associated HCC patients. Intrahepatic total HBV DNA and cccDNA were measured using the real-time PCR Taqman assay. HBV antigens in hepatocytes were detected using immunohistochemical staining...
March 9, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28272219/predictive-value-of-serum-alt-and-t-cell-receptor-beta-variable-chain-for-hbeag-seroconversion-in-chronic-hepatitis-b-patients-during-tenofovir-treatment
#15
Jiezuan Yang, Dong Yan, Renyong Guo, Jiajia Chen, Yongtao Li, Jun Fan, Xuyan Fu, Xinsheng Yao, Hongyan Diao, Lanjuan Li
Effective antiviral therapy plays a key role in slowing the progression of chronic hepatitis B (CHB). Identification of serum indices, including hepatitis B e antigen (HBeAg) expression and seroconversion, will facilitate evaluation of the efficacy of antiviral therapy in HBeAg-positive CHB patients. The biochemical, serological, virological parameters, and the frequency of circulating CD4CD25 regulatory T cell (Treg) in 32 patients were measured at baseline and every 12 weeks during 96 weeks of tenofovir disoproxil fumarate (TDF) treatment...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28229987/kinetics-of-hepatitis-b-surface-antigen-level-in-chronic-hepatitis-b-patients-who-achieved-hepatitis-b-surface-antigen-loss-during-pegylated-interferon-alpha-2a-treatment
#16
Ming-Hui Li, Lu Zhang, Xiao-Jing Qu, Yao Lu, Ge Shen, Shu-Ling Wu, Min Chang, Ru-Yu Liu, Lei-Ping Hu, Zhen-Zhen Li, Wen-Hao Hua, Shu-Jing Song, Yao Xie
BACKGROUND: Hepatitis B surface antigen (HBsAg) loss/seroconversion is considered to be the ideal endpoint of antiviral therapy and the ultimate treatment goal in chronic hepatitis B (CHB). This study aimed to assess the patterns of HBsAg kinetics in CHB patients who achieved HBsAg loss during the treatment of pegylated interferon (PEG-IFN) α-2a. METHODS: A total of 150 patients were enrolled, composing of 83 hepatitis B envelope antigen (HBeAg)-positive and 67 HBeAg-negative patients...
March 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28220812/status-of-hbsag-seroprevalence-in-15-million-rural-couples-in-china-a-cross-sectional-study
#17
Long Zhang, Yuan-Yuan Wang, Yan-Jie Huang, Qiao-Mei Wang, Kenrad E Nelson, An-Qi Wang, Hai-Ping Shen, Xiao-Li Liu, Yi-Ping Zhang, Dong-Hai Yan, Zuo-Qi Peng, Hong-Guang Zhang, Ya Zhang, Jun Zhao, Yan Wang, Ying Yang, Yuan He, Ji-Hong Xu, Du-Jia Liu, Tong-Jun Guo, Xiao-Na Xin, Hong Zhou, Xu Ma
A cross-sectional analysis of prevalence of hepatitis B virus infection (HBV) among rural couples was conducted between 2010 and 2014. Serologic HBV markers, including hepatitis B surface antigen (HBsAg) and e antigen (HBeAg), were tested. Primary outcome of interest comprised HBsAg positivity in couples (both positive: F+M+, only wife positive: F+M-, only husband positive: F-M+), and secondary outcome consisted of prevalence and risk factors of HBsAg positivity among husbands or wives. Of 14,816,300 couples included, 0...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28216958/-1-h-nmr-based-serum-metabolomics-reveals-erythromycin-induced-liver-toxicity-in-albino-wistar-rats
#18
Atul Rawat, Durgesh Dubey, Anupam Guleria, Umesh Kumar, Amit K Keshari, Swati Chaturvedi, Anand Prakash, Sudipta Saha, Dinesh Kumar
INTRODUCTION: Erythromycin (ERY) is known to induce hepatic toxicity which mimics other liver diseases. Thus, ERY is often used to produce experimental models of drug-induced liver-toxicity. The serum metabolic profiles can be used to evaluate the liver-toxicity and to further improve the understanding of underlying mechanism. OBJECTIVE: To establish the serum metabolic patterns of Erythromycin induced hepatotoxicity in albino wistar rats using (1)H NMR based serum metabolomics...
October 2016: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/28208002/expression-of-hepatocyte-hepatitis-b-core-antigen-and-hepatitis-b-surface-antigen-as-a-marker-in-the-management-of-chronic-hepatitis-b-patients
#19
Sun Young Yim, Tae Hyung Kim, Suh Sang Jun, Eun Sun Kim, Bora Keum, Yeon Seok Seo, Hyung Joon Yim, Yoon Tae Jeen, Hoon Jai Chun, Hong Sik Lee, Soon Ho Um, Chang Duck Kim, Nam Hee Won, Ho Sang Ryu
Background/Aims: We aimed to clarify the association of HBsAg/HBcAg with the disease status and treatment response in patients with chronic hepatitis B (CHB). Methods: We investigated 171 biopsy-proven entecavir-treated CHB patients (109 HBeAg-positive, 62 HBeAg-negative). HBcAg expression was positive when ≥10% of hepatocytes stained, and classified into nuclear, mixed, and cytoplasmic patterns. HBsAg expressions were intracytoplasmic (diffuse, globular, and submembranous) and membranous...
February 17, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28207518/virological-and-serological-features-of-acute-hepatitis-b-in-adults
#20
Xiaofei Du, Yali Liu, Lina Ma, Junfeng Lu, Yi Jin, Shan Ren, Zhimin He, Xinyue Chen
Various viral kinetics among patients with acute hepatitis B (AHB) have been observed in clinical practice. This study investigated the virological, biochemical, and serological characteristics of AHB in adults.A total of 192 adult patients with AHB were recruited between December 2010 and January 2014. The quantification of biochemical and serologic markers for hepatitis B virus (HBV) infection was monitored from the onset.Of the 192 patients, 113 patients were followed up. One patient died due to acute liver failure, 2 developed chronic HBV infection...
February 2017: Medicine (Baltimore)
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