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https://www.readbyqxmd.com/read/28749570/hepatocyte-derived-exosomes-promote-t-follicular-regulatory-cell-expansion-during-hcv-infection
#1
Dustin A Cobb, Lucy Golden-Mason, Hugo R Rosen, Young S Hahn
Hepatitis C virus (HCV) is a global health concern that can cause severe liver disease such as cirrhosis and hepatocellular carcinoma. Control of HCV requires vigorous T cell responses, yet CD4(+) T cells in chronic HCV patients are dysfunctional. T follicular regulatory (Tfr) cells are a subset of regulatory T cells that suppress T follicular helper (Tfh) cells and the generation of high affinity antibody-producing B cells. In this study, we examined the accumulation of Tfr cells in the liver compartment during chronic HCV infection and defined the cellular and molecular mechanisms underlying their expansion...
July 27, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28749559/recombinant-cccdna-of-hepatitis-b-virus-induces-long-term-viral-persistence-with-chronic-hepatitis-in-a-mouse-model
#2
Gaiyun Li, Yuanfei Zhu, Dianhui Shao, Hao Chang, Xiaoming Zhang, Dongming Zhou, Yueqiu Gao, Ke Lan, Qiang Deng
Covalently closed circular (ccc) DNA of hepatitis B virus (HBV) is critical for viral persistence in vivo. We recently reported a technique involving recombinant (r) cccDNA of HBV by site-specific DNA recombination. Using hydrodynamic injection, rcccDNA induces a temporarily prolonged HBV anigenemia in immunocompetent mice, similar to acute resolving HBV infection. In this study, we simulated the pathophysiological impact of chronic hepatitis by which to reproduce (r)cccDNA persistence in mouse models. We showed that rcccDNA achieved long-lasting persistence in the presence of a compromised immune response or when transcriptional activity was repressed...
July 27, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28748890/prevalence-of-hepatitis-b-core-antibodies-with-negative-hepatitis-b-surface-antigen-in-dialysis-and-chronic-kidney-disease-patients
#3
Nauman Tarif, Muhammad Mohsin Riaz, Omer Sabir, Rizwan Akhter, Kashif Rafique, Nabiha Rizvi
Occult hepatitis B infection (OBI) is a potential cause of infection transmission in patients with chronic kidney disease (CKD) and dialysis-dependant patients. It is liable to be missed since the marker for OBI, hepatitis B core antibody (HBcAb), is not done routinely. We carried out a study to assess the prevalence of OBI in CKD Stage II-V or requiring renal replacement therapy. It was a cross-sectional study carried out at Fatima Memorial Hospital, Lahore, from May 2104 to May 2015. A total of 188 patients were included in this study, 124 were dialysis dependent and 64 had acute or CKD Stage II-V...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28748417/detection-of-hepatitis-b-virus-in-bone-allografts-from-donors-with-occult-hepatitis-b-infection
#4
Vicente Mirabet, Manuel Álvarez, Mar Luis-Hidalgo, Juan Galán, Nieves Puig, Luis Larrea, Cristina Arbona
The implementation of nucleic acid testing in donor screening has improved the safety of tissue allografts. Although infectious disease transmission can be considered a rare event, the detection of occult hepatitis B infection remains challenging. The studies concerning this risk are mainly based on testing blood specimens. This work shows the correlation between results of samples obtained from donor blood and the corresponding tissue washing solution. Hepatitis B virus deoxyribonucleic acid was detected both in bone allografts from donors with serological profiles associated to active hepatitis B infection and occult hepatitis B infection...
July 26, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28748166/assessment-of-immunomodulatory-activity-of-aqueous-extract-of-calamus-rotang
#5
Amit Gupta, Sushama Ravindra Chaphalkar
OBJECTIVE: There are a number of medicinal plant products which has been used to treat various immunological diseases. Out of these medicinal plants, Calamus rotang has shown several medicinal properties including anti-viral, anti-diabetic, anti-inflammatory effects. Normally, the roots of C. rotang are used in various ailments to cure piles, burning sensation, cough, leprosy and bleeding disorder and also it was used in the treatment of inflammation. In the present study, our group were investigated the immunomodulatory activity of aqueous extract of C...
May 2017: Avicenna Journal of Phytomedicine
https://www.readbyqxmd.com/read/28746382/gelatin-nanoparticles-enhance-delivery-of-hepatitis-c-virus-recombinant-ns2-gene
#6
Salwa Sabet, Marina A George, Haidan M El-Shorbagy, Heba Bassiony, Khaled Y Farroh, Tareq Youssef, Taher A Salaheldin
BACKGROUND: Development of an effective non-viral vaccine against hepatitis C virus infection is of a great importance. Gelatin nanoparticles (Gel.NPs) have an attention and promising approach as a viable carrier for delivery of vaccine, gene, drug and other biomolecules in the body. AIM OF WORK: The present study aimed to develop stable Gel.NPs conjugated with nonstructural protein 2 (NS2) gene of Hepatitis C Virus genotype 4a (HCV4a) as a safe and an efficient vaccine delivery system...
2017: PloS One
https://www.readbyqxmd.com/read/28746207/integrating-nested-pcr-with-high-throughput-sequencing-to-characterize-mutations-of-hbv-genome-in-low-viral-load-samples
#7
Xianjun Wang, Lihui Xu, Yueming Chen, Anbing Liu, Liqian Wang, Peisong Xu, Yunhui Liu, Lei Li, Fei Meng
Due to the low viral load of hepatitis B virus (HBV) in plasma samples, conventional techniques have limitations to the detection of antiviral resistance mutations. To solve the problem, we developed a fast, highly sensitive, and accurate method to sequence the HBV whole-genome sequencing in plasma samples which had various viral loads from very low to high.Twenty-one plasma samples were collected from patients who were carriers of HBV from the Hangzhou First People's Hospital. Two pairs of conserved, overlapping, nested primers were used to amplify and sequence the whole HBV genome in 8 plasma samples with different viral loads...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28745269/hepatitis-b-virus-prevents-excessive-viral-production-via-reduction-of-cell-death-inducing-dff45-like-effectors
#8
Jun Yasumoto, Hirotake Kasai, Kentaro Yoshimura, Teruhime Otoguro, Koichi Watashi, Takaji Wakita, Atsuya Yamashita, Tomohisa Tanaka, Sen Takeda, Kohji Moriishi
The relationship between hepatitis B virus (HBV) infection and lipid accumulation remains largely unknown. In this study, we investigated the effect of HBV propagation on lipid droplet growth in HBV-infected cells and HBV-producing cell lines, HepG2.2.15 and HBV-inducible Hep38.7-Tet. The amount of intracellular triglycerides was significantly reduced in HBV-infected and HBV-producing cells compared with HBV-lacking control cells. Electron and immunofluorescent microscopic analyses showed that the average size of a single lipid droplet (LD) was significantly less in the HBV-infected and HBV-producing cells than in the HBV-lacking control cells...
July 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28745207/hiv-drug-resistance-testing-in-a-resource-limited-setting-with-high-viral-diversity-the-first-twenty-eight-months-experience
#9
Elodie Teclaire Ngo-Malabo, Paul Alain Ngoupo, Serge Alain Sadeuh-Mba, Emmanuel Akongnwi, Robert Banaï, Laure Ngono, Richard Njouom, Charles Felix Bilong-Bilong, Anfumbom Kfutwah
BACKGROUND: First line antiretroviral therapy in a resource-limited setting consists of nucleotide and non-nucleotide reverse transcriptase inhibitors. Protease inhibitors are the hub of second line therapy. The decision to change antiretroviral therapy for a patient is frequently presumptive because of the lack of genotypic resistance tests in routine follow-up. We describe here the resistance profiles observed in patients with varying terms of antiretroviral therapy in Cameroon after implementation of HIV genotypic resistance testing in routine practice...
July 25, 2017: Current HIV Research
https://www.readbyqxmd.com/read/28744823/combination-of-pnpla3-and-tll1-polymorphism-can-predict-advanced-fibrosis-in-japanese-patients-with-nonalcoholic-fatty-liver-disease
#10
Yuya Seko, Kanji Yamaguchi, Naoki Mizuno, Keiichiro Okuda, Masashi Takemura, Hiroyoshi Taketani, Tasuku Hara, Atsushi Umemura, Taichiro Nishikawa, Michihisa Moriguchi, Kohichiroh Yasui, Mai Kamaguchi, Kenichi Nishioji, Naomi Mochizuki, Masao Kobayashi, Kojiroh Mori, Saiyu Tanaka, Kentaro Matsuura, Yasuhito Tanaka, Yoshito Itoh
BACKGROUND: Hepatic fibrosis is an independent risk factor for mortality and liver-related events in patients with nonalcoholic fatty liver disease (NAFLD). PNPLA3 rs738409 has been associated with fibrosis in viral and non-viral hepatitis. TLL1 rs17047200 also has been associated with developing hepatocellular carcinoma probably via hepatic fibrogenesis. We estimated the impact of these genetic polymorphisms on hepatic fibrosis in Japanese patients with NAFLD. METHODS: We analyzed the association between these genetic variants and the backgrounds of 817 individuals who received health checkups (health check cohort) from 2012 to 2014...
July 25, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28743934/many-european-countries-flying-blind-in-their-efforts-to-eliminate-viral-hepatitis
#11
Jeffrey V Lazarus, Kelly Safreed-Harmon, Massimo Colombo, Tatjana Reic, Eberhard Schatz, Pierre van Damme
No abstract text is available yet for this article.
July 26, 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28743933/eliminating-viral-hepatitis-momentum-must-keep-building
#12
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
July 26, 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28743875/hepatitis-c-virus-exploits-death-receptor-6-mediated-signaling-pathway-to-facilitate-viral-propagation
#13
Trang T D Luong, Giao V Q Tran, Dong-Jo Shin, Yun-Sook Lim, Soon B Hwang
The life cycle of hepatitis C virus (HCV) is highly dependent on host proteins for virus propagation. By transcriptome sequencing analysis, we identified host genes that were highly differentially expressed in HCV-infected cells. Of these candidates, we selected Death receptor 6 (DR6) for further characterization. DR6 is an orphan member of the tumor necrosis factor receptor superfamily. In the present study, we demonstrated that both mRNA and protein levels of DR6 were increased in the context of HCV replication...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28743700/critical-flicker-frequency-is-diagnostic-of-minimal-hepatic-encephalopathy
#14
Serag Esmat, Nouman El Garem, Hassan Raslan, Mohamed Elfekki, Gihan A Sleem
Minimal hepatic encephalopathy may affect up to 80% of cirrhotic patients, in the absence of overt hepatic encephalopathy. The objective of the study is to evaluate the accuracy of diagnosis of minimal hepatic encephalopathy with critical flicker frequency (CFF). The study was conducted on 180 patients with post hepatitis C liver cirrhosis and on 60 healthy subjects as control. Patients and controls were divided into four groups: group 1 (60), healthy individuals as a control group; group 2 (60), patients with liver cirrhosis (Child class A); group 3 (60), patients with liver cirrhosis (Child class B); and group 4 (60), patients with liver cirrhosis (Child class C)...
July 25, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/28743246/associations-between-national-viral-hepatitis-policies-programmes-and-country-level-socioeconomic-factors-a-sub-analysis-of-data-from-the-2013-who-viral-hepatitis-policy-report
#15
Jeffrey V Lazarus, Ida Sperle, Kelly Safreed-Harmon, Charles Gore, Beatriz Cebolla, Alexander Spina
BACKGROUND: As more countries worldwide develop national viral hepatitis strategies, it is important to ask whether context-specific factors affect their decision-making. This study aimed to determine whether country-level socioeconomic factors are associated with viral hepatitis programmes and policy responses across WHO Member States (MS). METHODS: WHO MS focal points completed a questionnaire on national viral hepatitis policies. This secondary analysis of data reported in the 2013 Global Policy Report on the Prevention and Control of Viral Hepatitis in WHO Member States used logistic regression to examine associations between four survey questions and four socioeconomic factors: country income level, Human Development Index (HDI), health expenditure and physician density...
July 26, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28742003/hepatitis-c-virus-subtype-3a-was-introduced-in-the-ussr-in-the-early-1980s
#16
Victor A Manuylov, Elena V Chub, Vera S Kichatova, Natalya V Soboleva, Olga V Isaeva, Andrey A Zamyatnin, Sergey V Netesov
A total of 2120 nucleotide sequences of the NS5b region of HCV subtype 3a were analysed, including 310 strains derived from former republics of the USSR (Azerbaijan, Estonia, Lithuania, Russia, Tajikistan and Uzbekistan). Among the viral isolates collected from former regions of the Soviet Union, 294 strains formed 3 sustained phylogenetic clusters, with each having a common origin. Phylodynamic analysis demonstrated that the most recent common ancestors of the current strains inside the three clusters were introduced into the USSR population in 1981±1, 1984±2 and 1985±2, respectively (the confidence intervals were calculated using Student's t-distribution, P<0...
July 26, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28740594/opportunities-for-treatment-of-the-hepatitis-c-virus-infected-patient-with-chronic-kidney-disease
#17
REVIEW
Marco Ladino, Fernando Pedraza, David Roth
The prevalence of hepatitis C virus (HCV) infection amongst patients with chronic kidney disease (CKD) and end-stage renal disease exceeds that of the general population. In addition to predisposing to the development of cirrhosis and hepatocellular carcinoma, infection with HCV has been associated with extra-hepatic complications including CKD, proteinuria, glomerulonephritis, cryoglobulinemia, increased cardiovascular risk, insulin resistance, and lymphoma. With these associated morbidities, infection with HCV is not unexpectedly accompanied by an increase in mortality in the general population as well as in patients with kidney disease...
July 8, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28740347/chronic-hepatitis-b-nonalcoholic-steatohepatitis-and-physical-fitness-of-military-males-chief-study
#18
Yu-Jung Chen, Kai-Wen Chen, Yu-Leung Shih, Fang-Ying Su, Yen-Po Lin, Fan-Chun Meng, Felicia Lin, Yun-Shun Yu, Chih-Lu Han, Chih-Hung Wang, Jia-Wei Lin, Tsai-Yuan Hsieh, Yi-Hwei Li, Gen-Min Lin
AIM: To investigate the association of chronic hepatitis B and nonalcoholic steatohepatitis with physical fitness in a Taiwanese military male cohort. METHODS: We made a cross-sectional examination of this association using 3669 young adult military males according to cardiorespiratory fitness and hospitalization events recorded in the Taiwan Armed Forces study. Cases of chronic hepatitis B (n = 121) were defined by personal history and positive detection of hepatitis B surface antigen...
July 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28740124/evaluation-of-sofosbuvir-%C3%AE-d-2-deoxy-2-%C3%AE-fluoro-2-%C3%AE-c-methyluridine-as-an-inhibitor-of-dengue-virus-replication
#19
Hong-Tao Xu, Susan P Colby-Germinario, Said A Hassounah, Clare Fogarty, Nathan Osman, Navaneethan Palanisamy, Yingshan Han, Maureen Oliveira, Yudong Quan, Mark A Wainberg
We evaluated Sofosbuvir (SOF), the anti-hepatitis C virus prodrug of β-d-2'-deoxy-2'-α-fluoro-2'-β-C-methyluridine-5'-monophosphate, for potential inhibitory activity against DENV replication. Both cell-based and biochemical assays, based on use of purified DENV full-length NS5 enzyme, were studied. Cytopathic effect protection and virus yield reduction assays confirmed that SOF possessed anti-DENV activity in cell culture with a 50% effective concentration (EC50) of 4.9 µM and 1.4 µM respectively...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28739427/the-impact-of-genetic-variation-in-il28b-ifnl4-and-hla-genes-on-treatment-responses-against-chronic-hepatitis-c-virus-infection
#20
Fatemeh Sakhaee, Morteza Ghazanfari, Farzam Vaziri, Fatemeh Rahimi Jamnani, Mehdi Davari, Safoora Gharibzadeh, Roohollah Fateh, Farid Abdolrahimi, Shahin Pourazar Dizaji, Abolfazl Fateh, Seyed Davar Siadat
Single nucleotide polymorphisms (SNPs) near the interleukin-28B (IL28B), interferon lambda 4 (IFNL4) and the human leukocyte antigen (HLA) gene are associated with treatment responses in patients with chronic hepatitis C (CHC) virus infection treated with pegylated interferon-α and ribavirin (pegIFN-α/RBV). We compared the role of IL28B SNPs (rs12979860, rs12980275, and rs8099917), IFNL4 ss469415590 and HLA rs4273729 with treatment outcomes in patients with CHC virus. A total of 520 Iranian patients with CHC infection were enrolled...
July 21, 2017: Infection, Genetics and Evolution
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