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https://www.readbyqxmd.com/read/29045899/early-transcriptional-divergence-marks-virus-specific-primary-human-cd8-t-cells-in-chronic-versus-acute-infection
#1
David Wolski, Peter K Foote, Diana Y Chen, Lia L Lewis-Ximenez, Catherine Fauvelle, Jasneet Aneja, Andreas Walker, Pierre Tonnerre, Almudena Torres-Cornejo, Daniel Kvistad, Sabrina Imam, Michael T Waring, Damien C Tully, Todd M Allen, Raymond T Chung, Jörg Timm, W Nicholas Haining, Arthur Y Kim, Thomas F Baumert, Georg M Lauer
Distinct molecular pathways govern the differentiation of CD8(+) effector T cells into memory or exhausted T cells during acute and chronic viral infection, but these are not well studied in humans. Here, we employed an integrative systems immunology approach to identify transcriptional commonalities and differences between virus-specific CD8(+) T cells from patients with persistent and spontaneously resolving hepatitis C virus (HCV) infection during the acute phase. We observed dysregulation of metabolic processes during early persistent infection that was linked to changes in expression of genes related to nucleosomal regulation of transcription, T cell differentiation, and the inflammatory response and correlated with subject age, sex, and the presence of HCV-specific CD4(+) T cell populations...
October 17, 2017: Immunity
https://www.readbyqxmd.com/read/29045818/conformational-plasticity-of-hepatitis-c-virus-core-protein-enables-rna-induced-formation-of-nucleocapsid-like-particles
#2
Erik D Holmstrom, Daniel Nettels, Benjamin Schuler
Many of the unanswered questions associated with hepatitis C virus assembly are related to the core protein (HCVcp), which forms an oligomeric nucleocapsid encompassing the viral genome. The structural properties of HCVcp have been difficult to quantify, at least in part because it is an intrinsically disordered protein (IDP). We have used single-molecule FRET techniques to study the conformational dimensions and dynamics of the HCVcp nucleocapsid domain (HCVncd) at various stages during the RNA-induced formation of nucleocapsid-like particles...
October 15, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29045810/a-novel-next-generation-sequencing-assay-as-an-alternative-to-currently-available-methods-for-hepatitis-c-virus-genotyping
#3
G Dirani, E Paesini, E Mascetra, P Farabegoli, B Dalmo, B Bartolini, A R Garbuglia, M R Capobianchi, V Samri
Chronic HCV infection is one of the leading causes of liver-related death and in many countries it is a primary reason for having a liver transplant. HCV genotype identification has long been used in the clinical practice, since different genotypes have different response rates and required different doses and durations of IFN/RBV treatment; moreover both the frequency and the pattern of resistance to different Direct-Acting Antivirals (DAAs) classes are subtype specific. Hence the necessity to make an accurate HCV subtyping becomes a fundamental tool to optimize current and future clinical management of HCV infected subjects...
October 15, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/29045799/opt-out-hiv-and-hepatitis-c-testing-at-the-dallas-county-jail-uptake-prevalence-and-demographic-characteristics-of-testers
#4
Carolina de la Flor, Esmaeil Porsa, Ank E Nijhawan
Human immunodeficiency virus (HIV) and hepatitis C virus (HCV) infection are common in the criminal justice system. We offered opt-out HIV/HCV testing at the Dallas County Jail during intake from June 2015 to November 2016, after which testing was integrated into routine phlebotomy processes. The uptake of testing increased from 12.9% (118/915) in June 2015 to 80.5% (269/334) in January 2016. HIV was confirmed in 1.0% (30/3155) of inmates; 6 were new diagnoses and all were linked to care. HCV antibody positivity was found in 16...
January 1, 2017: Public Health Reports
https://www.readbyqxmd.com/read/29045731/the-chimpanzee-model-of-viral-hepatitis-advances-in-understanding-the-immune-response-and-treatment-of-viral-hepatitis
#5
Robert E Lanford, Christopher M Walker, Stanley M Lemon
Chimpanzees (Pan troglodytes) have contributed to diverse fields of biomedical research due to their close genetic relationship to humans and in many instances due to the lack of any other animal model. This review focuses on the contributions of the chimpanzee model to research on hepatitis viruses where chimpanzees represented the only animal model (hepatitis B and C) or the most appropriate animal model (hepatitis A). Research with chimpanzees led to the development of vaccines for HAV and HBV that are used worldwide to protect hundreds of millions from these diseases and, where fully implemented, have provided immunity for entire generations...
October 17, 2017: ILAR Journal
https://www.readbyqxmd.com/read/29045704/new-onset-diabetes-after-kidney-transplantation-can-the-risk-be-modified-by-choosing-immunosuppression-regimen-based-on-pretransplant-viral-serology
#6
Alfonso H Santos, Chao Chen, Michael J Casey, Karl L Womer, Xuerong Wen
Background: This study aimed to analyze adult kidney transplant recipients (KTRs) for the risk of new-onset diabetes after transplantation (NODAT) associated with viral serologies and immunosuppression regimens [tacrolimus (Tac) + mycophenolate (MPA), cyclosporine (CSA) + MPA, sirolimus (SRL) + MPA, SRL + CSA or SRL +Tac]. Methods: Cox regression models were used to examine the risk of NODAT in the first posttransplant year associated with: (i) CSA + MPA, SRL + MPA, SRL + MPA or SRL + Tac versus reference, Tac + MPA; (ii) pretransplant viral serology [+ or -; hepatitis B core (HBc), hepatitis C (HCV), cytomegalovirus (CMV) or Epstein Barr Virus (EBV)]; and (iii) interactions between immunosuppression regimens and the viral serology found significant in the main analysis...
October 16, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29045541/from-hepatitis-c-virus-infection-to-b-cell-lymphoma
#7
L Couronné, E Bachy, S Roulland, B Nadel, F Davi, M Armand, D Canioni, J M Michot, C Visco, L Arcaini, C Besson, O Hermine
In addition to liver disorders, Hepatitis C virus (HCV) is also associated with extrahepatic immune manifestations and B-cell non-Hodgkin lymphoma (NHL), especially marginal zone lymphoma, de novo or transformed diffuse large B-cell lymphoma and to a lesser extent, follicular lymphoma. Epidemiological data and clinical observations argue for an association between HCV and lymphoproliferative disorders. The causative role of HCV in NHL has been further supported by the response to anti-viral therapy. Pathophysiological processes at stake leading from HCV infection to overt lymphoma still need to be further elucidated...
October 10, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29045448/interferon-free-therapy-with-direct-acting-antivirals-for-hcv-hiv-1-co-infected-japanese-patients-with-inherited-bleeding-disorders
#8
Haruka Uemura, Kunihisa Tsukada, Daisuke Mizushima, Takahiro Aoki, Koji Watanabe, Ei Kinai, Katsuji Teruya, Hiroyuki Gatanaga, Yoshimi Kikuchi, Masaya Sugiyama, Masashi Mizokami, Shinichi Oka
INTRODUCTION: Almost 30 years ago, about 30% of Japanese hemophiliacs became infected with HIV-1 and hepatitis C virus (HCV) after receiving contaminated blood products. While several studies have reported the high efficacy and safety of direct acting antivirals (DAA) in HIV-1 co-infected patients, such data are limited in hemophiliacs. METHODS: We conducted a single-center, open-label study involving 27 Japanese patients (median age; 45 years) with inherited bleeding disorders who were co-infected with HCV/HIV-1...
2017: PloS One
https://www.readbyqxmd.com/read/29045023/more-advanced-disease-and-worse-survival-in-cryptogenic-compared-to-viral-hepatocellular-carcinoma
#9
Tomi W Jun, Ming-Lun Yeh, Ju Dong Yang, Vincent L Chen, Pauline Nguyen, Nasra H Giama, Chung-Feng Huang, Ann W Hsing, Chia-Yen Dai, Jee-Fu Huang, Wan-Long Chuang, Lewis R Roberts, Ming-Lung Yu, Mindie H Nguyen
BACKGROUND & AIMS: Although hepatitis B virus (HBV) and hepatitis C virus (HCV) infections remain major risk factors for hepatocellular carcinoma (HCC), non-viral causes of HCC, particularly non-alcoholic fatty liver disease, are becoming increasingly prevalent. The aim of this study was to compare the clinical characteristics and survival of cryptogenic and viral HCC. METHODS: We conducted a retrospective cohort study involving 3,878 consecutive HCC patients seen at two tertiary centers in the United States and one in Taiwan from 2004-2014...
October 16, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/29044868/effects-of-rubiadin-isolated-from-prismatomeris-connata-on-anti-hepatitis-b-virus-activity-in-vitro
#10
Zheng Peng, Gang Fang, Fenghui Peng, Zhiyu Pan, Zhengying Su, Wei Tian, Danrong Li, Huaxin Hou
Prismatomeris connata was a kind of Rubiaceae plant for treatment of hepatitis, hepatic fibrosis and silicosis. Whereas, the effective components of Prismatomeris connata remains unexplored. The aim of this study was to investigate the inhibitory effects and mechanisms of Rubiadin isolated from Prismatomeris connata against HBV using HepG2.2.15 cells. The levels of hepatitis B surface antigen (HBsAg), hepatitis B e antigen (HBeAg), and hepatitis B core antigen (HBcAg) in the supernatants or cytoplasm were examined using by enzyme-linked immunosorbent assay...
October 18, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29044729/outcome-comparison-of-liver-transplantation-for-hepatitis-a-related-versus-hepatitis-b-related-acute-liver-failure-in-adult-recipients
#11
Dong-Hwan Jung, Shin Hwang, Young-Suk Lim, Ki-Hun Kim, Chul-Soo Ahn, Deok-Bog Moon, Tae-Yong Ha, Gi-Won Song, Gil-Chun Park, Sung-Gyu Lee
Hepatitis A virus (HAV) can cause acute liver failure (ALF). This study compares outcomes between liver transplantation (LT) for HAV-related ALF (HAV-ALF) and LT for Hepatitis B virus (HBV)-related ALF (HBV-ALF). Of 3,616 adult LTs performed between January 2005 and December 2014, we performed LT for HAV-ALF recipients (n = 29) and LT for HBV-ALF recipients (n = 34). HAV-ALF group included 18 males and 11 females with mean age of 33.1 years. Graft survival rates in HAV-ALF and HBV-ALF were 65.5% and 88.0% (1 year) and 65...
October 17, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/29044584/direct-medical-costs-associated-with-the-extrahepatic-manifestations-of-hepatitis-c-virus-infection-in-france
#12
P Cacoub, M Vautier, A C Desbois, D Saadoun, Z Younossi
BACKGROUND: The economic impact of extrahepatic manifestations of hepatitis C virus (HCV) infection remains unknown for France. AIM: To estimate the prevalence of extrahepatic manifestations of HCV and the direct medical costs associated with them. METHODS: Estimates of 13 extrahepatic manifestations prevalence were obtained from (1) a retrospective data analysis of HCV-infected patients in a specialised centre and the baseline prevalence in the general French population and (2) an international systematic review...
October 18, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29044068/needle-stick-injuries-in-a-tertiary-eye-care-hospital-incidence-management-outcomes-and-recommendations
#13
Ekta Rishi, B Shantha, Abhinav Dhami, Pukhraj Rishi, Hannah C Rajapriya
PURPOSE: The purpose of this study is to assess the incidence, management, and outcomes for needle stick injuries (NSIs) in a tertiary eye-care hospital and provide appropriate recommendations for its prevention. METHODS: This was a retrospective database review of NSI recorded between 2010 and 2015 at a tertiary eye care center. All staff members who had NSI were managed with standard treatment protocol. The mode, location, health-care workers affected and/or at risk for NSI were analyzed...
October 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29043000/effect-of-entecavir-in-the-treatment-of-patients-with-hepatitis-b-virus-related-compensated-and-decompensated-cirrhosis
#14
Xiao-Dong Gai, Wei-Feng Wu
Chronic hepatitis B virus (CHB) infection is a burden on global healthcare and is associated with a higher risk of serious sequelae, including cirrhosis and hepatocellular carcinoma. The clinical application of entecavir as a treatment for CHB has produced positive outcomes, and so is an attractive form of pharmacological therapy. However, little data exists comparing the safety and efficacy of entecavir for the treatment of hepatitis B virus (HBV)-related compensated, and decompensated cirrhosis, respectively...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29042915/the-innovation-of-the-subspecialty-of-paediatric-virology-an-interview-with-research-professor-of-molecular-virology-anna-kramvis
#15
Ioannis N Mammas, Demetrios A Spandidos
Professor Anna Kramvis, Research Professor of Molecular Virology at the University of the Witwatersrand in Johannesburg, South Africa, talks about direct-acting antiviral treatments against hepatitis C virus (HCV), as well as the perspective of the development of an effective vaccine against HCV. She emphasises the necessity of vaccination against hepatitis B virus (HBV), highlighting that it is very important that vaccination should be administered at birth in order to prevent mother-to-child transmission (MTCT) of HBV...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29042702/genetic-factors-of-low-responsiveness-to-hepatitis-b-virus-vaccine-confirms-the-importance-of-human-leukocyte-antigen-class-ii-types-in-a-japanese-young-adult-population
#16
Nobuyasu Yukimasa, Shota Kohama, Wataru Oboshi, Shoichi Sato, Takehiro Nakamura
We investigated the genetic mechanisms underlying the association between human leukocyte antigen (HLA) types and the immune response to hepatitis B virus (HBV) vaccination in 84 healthy Japanese adults, and found that the HLA-DRB1*04 and HLA-DQB1*03 frequencies were higher in the low responders (<10 mIU/ml; n=9, 10.7%) compared to the responders (≥10 mIU/ml, n=75, 89.3%). The combination of DRB1*04 and DQB1*03 was associated with a low response to vaccination. The DRB1*04 and DQB1*03 haplotypes' frequencies were significantly higher in the low responders compared to responders...
October 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/29042662/switching-to-pegifn%C3%AE-2b-leads-to-hbsag-loss-in-patients-with-low-hbsag-levels-and-hbv-dna-suppressed-by-nas
#17
Jing Huang, Ka Zhang, Wenli Chen, Jinyao Liao, Xiaodan Luo, Ren Chen
Patients with low hepatitis B surface antigen (HBsAg) levels and hepatitis B virus (HBV) DNA suppression by nucleos(t)ide analogues (NAs) achieve high rate of HBsAg loss through switching to PegIFNα in pre-registration study. The aim of this study was to achieve higher rate of HBsAg loss through extended PegIFN treatment. 98 patients with HBsAg < 2,000 IU/ml and HBV DNA < 20 IU/ml were randomized to receive PegIFNα-2b or continuing NA therapy for 60 weeks. At the end of treatment (EOT) and end of follow-up (EOF), only patients who switched to PegIFNα-2b achieved HBsAg loss (32...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29042217/the-detection-of-hepatitis-c-virus-core-antigen-using-afm-chips-with-immobolized-aptamers
#18
T O Pleshakova, A L Kaysheva, J М Bayzyanova, А S Anashkina, V F Uchaikin, V S Ziborov, V A Konev, A I Archakov, Y D Ivanov
In the present study, the possibility of hepatitis C virus core antigen (HCVcoreAg) detection in buffer solution, using atomic force microscope chip (AFM-chip) with immobilized aptamers, has been demonstrated. The target protein was detected in 1mL of solution at concentrations from 10(-10)М to 10(-13)М. The registration of aptamer/antigen complexes on the chip surface was carried out by atomic force microscopy (AFM). The further mass-spectrometric (MS) identification of AFM-registered objects on the chip surface allowed reliable identification of HCVcoreAg target protein in the complexes...
October 14, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/29040989/hepatocellular-carcinoma-after-achievement-of-sustained-viral-response-with-daclatasvir-and-asunaprevir-in-patients-with-chronic-hepatitis-c-virus-infection
#19
Hiroshi Ida, Satoru Hagiwara, Masashi Kono, Tomohiro Minami, Hirokazu Chishina, Tadaaki Arizumi, Masahiro Takita, Norihisa Yada, Yasunori Minami, Kazuomi Ueshima, Naoshi Nishida, Masatoshi Kudo
BACKGROUND: Interferon-based antiviral therapies against hepatitis C virus (HCV) infection have been shown to reduce the incidence of hepatocellular carcinoma (HCC) in patients with sustained viral response (SVR). Recently, direct-acting antivirals (DAAs) have been proven to be much more effective in achieving SVR than interferon-based therapies. However, whether DAAs can efficiently prevent the occurrence of HCC after SVR remains controversial. To clarify this issue, we analyzed the clinical features of patients in whom HCC developed after achievement of SVR with DAAs for chronic HCV infection...
2017: Digestive Diseases
https://www.readbyqxmd.com/read/29040987/hepatocarcinogenesis-is-associated-with-serum-albumin-levels-after-sustained-virological-responses-with-interferon-based-therapy-in-patients-with-hepatitis-c
#20
Yasuko Umehara, Satoru Hagiwara, Naoshi Nishida, Toshiharu Sakurai, Hiroshi Ida, Yasunori Minami, Masahiro Takita, Tomohiro Minami, Hirokazu Chishina, Kazuomi Ueshima, Yoriaki Komeda, Tadaaki Arizumi, Tomohiro Watanabe, Masatoshi Kudo
OBJECTIVE: It is a generally accepted fact that eradication of hepatitis virus C inhibits the subsequent development of hepatocellular carcinoma (HCC). On the contrary, a significant population of patients developed HCC despite sustained virological responses (SVRs) to interferon (IFN) therapy. METHODS: A total of 415 patients with chronic hepatitis C, who were treated at our hospital between 2004 and 2014, were enrolled for this study. We examined the risk factors for HCC development after IFN therapy...
2017: Digestive Diseases
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