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Hepatitis C virus

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https://www.readbyqxmd.com/read/28445966/interferon-alpha-antagonizes-the-anti-hepatoma-activity-of-the-oncolytic-virus-m1-by-stimulating-anti-viral-immunity
#1
Liu Ying, Hu Cheng, Xu Wen Xiong, Lin Yuan, Zhang Hai Peng, Zhong Wen Wen, Liang Jian Ka, Xiao Xiao, Cai Jing, Tan Ya Qian, Gao Zhi Liang, Yan Guang Mei, Zhu Wen Bo, Peng Liang
Alpha virus M1 is an oncolytic virus that targets zinc-finger antiviral protein (ZAP)-defective cancer cells, and may be useful for treatment of hepatocellular carcinoma (HCC). Most of HCC patients have hepatitis and need long-term antiviral medication. Thus, it is necessary to clarify whether anti-virus medicines influence oncolytic effect of M1. We examined the effect of drugs used to treat hepatitis B/C on M1-mediated oncolysis in vitro and in vivo. Interferon (IFN)-α induces expression of antiviral IFN-stimulated genes (ISGs) in HCC cells with moderate sensitivity to M1 virus...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28445235/recent-trends-in-the-epidemiology-of-hepatocellular-carcinoma-in-olmsted-county-minnesota-a-us-population-based-study
#2
Ju Dong Yang, Hager Ahmed Mohammed, William S Harmsen, Felicity Enders, Gregory J Gores, Lewis R Roberts
BACKGROUND/AIM: The epidemiology of hepatocellular carcinoma (HCC) has changed in the United States recently. The aim of this study is to evaluate the recent trends of HCC epidemiology in Olmsted County, MN. METHODS: Residents aged over 20 with newly diagnosed HCC were identified using the Rochester Epidemiology Project database. Clinical information was compared among patients diagnosed between 2000 and 2009 (era 1) and 2010 to 2014 (era 2). RESULTS: Over 1...
April 25, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28444868/an-ecological-approach-to-discover-new-bioactive-extracts-and-products-the-case-of-extremophile-plants
#3
Ramla Sahli, Céline Rivière, Christel Neut, Joanne Bero, Marie-Emmanuelle Sahuc, Abderrazak Smaoui, Claire Beaufay, Vincent Roumy, Thierry Hennebelle, Yves Rouillé, Joëlle Quetin-Leclercq, Karin Séron, Riadh Ksouri, Sevser Sahpaz
OBJECTIVES: Eight extremophile plants from Tunisia were screened to find natural products with benefits in human health. METHODS: These plants were collected in different areas in Tunisia. Their methanolic extracts were evaluated for their total phenolic content and for their antiradical (DPPH), antimicrobial (on 35 bacteria and one yeast), antiviral (hepatitis C virus, HCV) and cytotoxic activity (against WI38 and J774 cell lines). The most active species were subjected to a bioguided fractionation...
April 26, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28444158/reactivation-of-hepatitis-b-virus-following-treatment-of-hepatitis-c-virus-infection-in-coinfected-patients
#4
Resat Ozaras, Ilker Inanc Balkan, Mucahit Yemisen, Bilgul Mete, Fehmi Tabak
No abstract text is available yet for this article.
April 24, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28443566/atypical-chemokine-receptor-1-polymorphism-can-not-affect-susceptibility-to-hepatitis-c-virus
#5
Shu Ting Zhang, Ming Shi, Lin Nan Shao, Shi Hang Zhou, Wei Jian Yu, Mei Chen, Nan Xiao, Ying Duan, Ling Zi Pan, Ni Wang, Wen Qian Song, Yue Xin Xia, Li Zhang, Ning Qi, Ming Liu
BACKGROUND: Hepatitis C virus (HCV) has infected 130 to 150 million individuals globally. A significant number of chronically infected patients will develop liver cirrhosis, hepatocellular cancer and liver failure. Atypical Chemokine Receptor 1 (ACKR1) has become the focus because of its diverse roles in diseases. However, little is known regarding the association of ACKR1 polymorphism with the susceptibility to HCV. AIMS: The purpose of the present study is to determine the association of the ACKR1 polymorphisms (rs12075) with HCV susceptibility...
April 6, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28443252/open-label-phase-ii-clinical-trial-in-75-patients-with-advanced-hepatocellular-carcinoma-receiving-daily-dose-of-tableted-liver-cancer-vaccine-hepcortespenlisimut-l
#6
Marina G Tarakanovskaya, Jigjidsuren Chinburen, Purev Batchuluun, Chogsom Munkhzaya, Genden Purevsuren, Dorjiin Dandii, Tsogkhuu Hulan, Dandii Oyungerel, Galyna A Kutsyna, Alan A Reid, Vika Borisova, Allen I Bain, Vichai Jirathitikal, Aldar S Bourinbaiar
BACKGROUND: An increasing number of studies is now devoted to immunotherapy of cancer. We evaluated the clinical benefit of hepcortespenlisimut-L (Hepko-V5 [formerly known as V5])-an oral therapeutic vaccine designated by the United States Food and Drug Administration (FDA) as an orphan drug for treatment of hepatocellular carcinoma (HCC). V5 was initially developed by us in 2002 to treat hepatitis B or C viral infections and liver cirrhosis. METHODS: The outcome of open-label Phase II trial of daily dose of V5 pill was analyzed retrospectively...
2017: Journal of Hepatocellular Carcinoma
https://www.readbyqxmd.com/read/28443075/grim-19-restricts-hcv-replication-by-attenuating-intracellular-lipid-accumulation
#7
Jung-Hee Kim, Pil S Sung, Eun B Lee, Wonhee Hur, Dong J Park, Eui-Cheol Shin, Marc P Windisch, Seung K Yoon
Gene-associated with retinoid-interferon-induced mortality 19 (GRIM-19) targets multiple signaling pathways involved in cell death and growth. However, the role of GRIM-19 in the pathogenesis of hepatitis virus infections remains unexplored. Here, we investigated the restrictive effects of GRIM-19 on the replication of hepatitis C virus (HCV). We found that GRIM-19 protein levels were reduced in HCV-infected Huh7 cells and Huh7 cells harboring HCV replicons. Moreover, ectopically expressed GRIM-19 caused a reduction in both intracellular viral RNA levels and secreted viruses in HCVcc-infected cell cultures...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28442915/efficacy-and-safety-outcomes-of-sofosbuvir-based-treatment-regimens-for-hepatitis-c-virus-infected-patients-with-or-without-cirrhosis-from-phase-iii-clinical-trials
#8
REVIEW
Young-Mo Yang, Eun Joo Choi
BACKGROUND: With the appearance of oral direct-acting antivirals (DAAs), the field of hepatitis C virus (HCV) treatment has been dramatically changed. This evolution makes possible for all oral treatments to be available for the treatment of HCV-infected patients. The aims of this review were to report the efficacy and safety of sofosbuvir (SOF)-based regimens for the treatment of patients with chronic HCV infection and to provide our clinical perspectives on these regimens. METHODS: A literature search of clinical studies published in PubMed and posted on ClinicalTrials...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28442794/innate-and-adaptive-immunity-shape-circulating-hcv-strains
#9
Silvana Gaudieri, Michaela Lucas
An unbiased genome-to-genome analysis in chronic hepatitis C virus (HCV) infection confirms the innate and adaptive arms of the immune system as drivers of viral evolution. Viral adaptation has a critical role in the interaction between host and pathogen and has important clinical implications for infection outcome.
April 26, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28442624/unphosphorylated-isgf3-drives-constitutive-expression-of-interferon-stimulated-genes-to-protect-against-viral-infections
#10
Wenshi Wang, Yuebang Yin, Lei Xu, Junhong Su, Fen Huang, Yijin Wang, Patrick P C Boor, Kan Chen, Wenhui Wang, Wanlu Cao, Xinying Zhou, Pengyu Liu, Luc J W van der Laan, Jaap Kwekkeboom, Maikel P Peppelenbosch, Qiuwei Pan
Interferon (IFN)-stimulated genes (ISGs) are antiviral effectors that are induced by IFNs through the formation of a tripartite transcription factor ISGF3, which is composed of IRF9 and phosphorylated forms of STAT1 and STAT2. However, we found that IFN-independent ISG expression was detectable in immortalized cell lines, primary intestinal and liver organoids, and liver tissues. The constitutive expression of ISGs was mediated by the unphosphorylated ISGF3 (U-ISGF3) complex, consisting of IRF9 together with unphosphorylated STAT1 and STAT2...
April 25, 2017: Science Signaling
https://www.readbyqxmd.com/read/28442604/hepatitis-c-virus-indirectly-disrupts-dna-damage-induced-p53-responses-by-activating-protein-kinase-r
#11
Jonathan K Mitchell, Bentley R Midkiff, Benjamin Israelow, Matthew J Evans, Robert E Lanford, Christopher M Walker, Stanley M Lemon, David R McGivern
Many DNA tumor viruses promote cellular transformation by inactivating the critically important tumor suppressor protein p53. In contrast, it is not known whether p53 function is disrupted by hepatitis C virus (HCV), a unique, oncogenic RNA virus that is the leading infectious cause of liver cancer in many regions of the world. Here we show that HCV-permissive, liver-derived HepG2 cells engineered to constitutively express microRNA-122 (HepG2/miR-122 cells) have normal p53-mediated responses to DNA damage and that HCV replication in these cells potently suppresses p53 responses to etoposide, an inducer of DNA damage, or nutlin-3, an inhibitor of p53 degradation pathways...
April 25, 2017: MBio
https://www.readbyqxmd.com/read/28442271/evaluation-of-the-xpert-hcv-viral-load-point-of-care-assay-from-venepuncture-collected-and-finger-stick-capillary-whole-blood-samples-a-cohort-study
#12
Jason Grebely, Francois M J Lamoury, Behzad Hajarizadeh, Yasmin Mowat, Alison D Marshall, Sahar Bajis, Philippa Marks, Janaki Amin, Julie Smith, Michael Edwards, Carla Gorton, Nadine Ezard, David Persing, Marika Kleman, Philip Cunningham, Beth Catlett, Gregory J Dore, Tanya L Applegate
BACKGROUND: Point-of-care hepatitis C virus (HCV) RNA testing offers an advantage over antibody testing (which only indicates previous exposure), enabling diagnosis of active infection in a single visit. In this study, we evaluated the performance of the Xpert HCV Viral Load assay with venepuncture and finger-stick capillary whole-blood samples. METHODS: Plasma and finger-stick capillary whole-blood samples were collected from participants in an observational cohort enrolled at five sites in Australia (three drug and alcohol clinics, one homelessness service, and one needle and syringe programme)...
April 21, 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28442256/functional-evaluation-of-synthetic-flavonoids-and-chalcones-for-potential-antiviral-and-anticancer-properties
#13
Nelly Mateeva, Suresh V K Eyunni, Kinfe K Redda, Ucheze Ononuju, Tony D Hansberry, Cecilia Aikens, Anita Nag
Flavonoids, stilbenes, and chalcones are plant secondary metabolites that often possess diverse biological activities including anti-inflammatory, anti-cancer, and anti-viral activities. The wide range of bioactivities poses a challenge to identify their targets. Here, we studied a set of synthetically generated flavonoids and chalcones to evaluate for their biological activity, and compared similarly substituted flavonoids and chalcones. Substituted chalcones, but not flavonoids, showed inhibition of viral translation without significantly affecting viral replication in cells infected with hepatitis C virus (HCV)...
April 13, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28442121/hepatitis-c-virus-infection-care-pathway-a-report-from-the-american-gastroenterological-association-institute-hcv-care-pathway-work-group
#14
Fasiha Kanwal, Bruce R Bacon, Lauren A Beste, Joel V Brill, Allen L Gifford, Stuart C Gordon, Michael A Horberg, Jacob G Manthey, Nancy Reau, Vinod K Rustgi, Zobair M Younossi
No abstract text is available yet for this article.
May 2017: Gastroenterology
https://www.readbyqxmd.com/read/28442120/american-gastroenterological-association-institute-technical-review-on-the-role-of-elastography-in-chronic-liver-diseases
#15
Siddharth Singh, Andrew J Muir, Douglas T Dieterich, Yngve T Falck-Ytter
Chronic liver diseases (CLDs), due to chronic hepatitis C; hepatitis B; nonalcoholic fatty liver diseases (NAFLD); and alcoholic liver disease, are a leading cause of morbidity and mortality globally. Early identification of patients with cirrhosis at high risk of progression to liver-related complications may facilitate timely care and improve outcomes. With risks and misclassification associated with invasive tests, such as liver biopsy, noninvasive imaging modalities for liver fibrosis assessment have gained popularity...
May 2017: Gastroenterology
https://www.readbyqxmd.com/read/28441762/replication-and-oncolytic-activity-of-an-avian-orthoreovirus-in-human-hepatocellular-carcinoma-cells
#16
Robert A Kozak, Larissa Hattin, Mia J Biondi, Juan C Corredor, Scott Walsh, Max Xue-Zhong, Justin Manuel, Ian D McGilvray, Jason Morgenstern, Evan Lusty, Vera Cherepanov, Betty-Anne McBey, David Leishman, Jordan J Feld, Byram Bridle, Éva Nagy
Oncolytic viruses are cancer therapeutics with promising outcomes in pre-clinical and clinical settings. Animal viruses have the possibility to avoid pre-existing immunity in humans, while being safe and immunostimulatory. We isolated an avian orthoreovirus (ARV-PB1), and tested it against a panel of hepatocellular carcinoma cells. We found that ARV-PB1 replicated well and induced strong cytopathic effects. It was determined that one mechanism of cell death was through syncytia formation, resulting in apoptosis and induction of interferon stimulated genes (ISGs)...
April 24, 2017: Viruses
https://www.readbyqxmd.com/read/28441386/graft-derived-cell-free-dna-a-noninvasive-early-rejection-and-graft-damage-marker-in-liver-transplantation-a-prospective-observational-multicenter-cohort-study
#17
Ekkehard Schütz, Anna Fischer, Julia Beck, Markus Harden, Martina Koch, Tilo Wuensch, Martin Stockmann, Björn Nashan, Otto Kollmar, Johannes Matthaei, Philipp Kanzow, Philip D Walson, Jürgen Brockmöller, Michael Oellerich
BACKGROUND: Graft-derived cell-free DNA (GcfDNA), which is released into the blood stream by necrotic and apoptotic cells, is a promising noninvasive organ integrity biomarker. In liver transplantation (LTx), neither conventional liver function tests (LTFs) nor immunosuppressive drug monitoring are very effective for rejection monitoring. We therefore hypothesized that the quantitative measurement of donor-derived cell-free DNA (cfDNA) would have independent value for the assessment of graft integrity, including damage from acute rejection...
April 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28441362/real-world-experiences-with-the-combination-treatment-of-ledipasvir-plus-sofosbuvir-for-12-weeks-in-hcv-genotype-1-infected-japanese-patients-achievement-of-a-sustained-virological-response-in-previous-users-of-peginterferon-plus-ribavirin-with-hcv-ns3-4a-inhibitors
#18
Tatsuo Kanda, Shin Yasui, Masato Nakamura, Eiichiro Suzuki, Makoto Arai, Yoshihiko Ooka, Sadahisa Ogasawara, Tetsuhiro Chiba, Tomoko Saito, Yuki Haga, Koji Takahashi, Reina Sasaki, Shuang Wu, Shingo Nakamoto, Akinobu Tawada, Hitoshi Maruyama, Fumio Imazeki, Naoya Kato, Osamu Yokosuka
The aim of this study was to characterize the treatment response and serious adverse events of ledipasvir plus sofosbuvir therapies in Japanese patients infected with hepatitis C virus (HCV) genotype 1 (GT1). This retrospective study analyzed 240 Japanese HCV GT1 patients treated for 12 weeks with 90 mg of ledipasvir plus 400 mg of sofosbuvir daily. Sustained virological response at 12 weeks post-treatment (SVR12) was achieved in 236 of 240 (98.3%) patients. Among treatment-naïve patients, SVR12 was achieved in 136 of 138 (98...
April 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28441176/long-term-nitrite-inhalant-exposure-and-cancer-risk-in-msm
#19
Anupriya Dutta, Hajime Uno, Alex Holman, David R Lorenz, Steven M Wolinsky, Dana Gabuzda
OBJECTIVES: Nitrite inhalants (poppers) are commonly used recreational drugs among MSM and were previously associated with elevated rates of high-risk sexual behavior, HIV and human herpesvirus type 8 (HHV-8) seroconversion, and transient immunosuppressive effects in experimental models. Whether long-term popper use is associated with cancer risk among MSM in the HAART era is unclear. DESIGN: Prospective cohort study of cancer risk in 3223 HIV-infected and uninfected MSM in the Multicenter AIDS Cohort Study from 1996-2010...
May 15, 2017: AIDS
https://www.readbyqxmd.com/read/28441174/increased-incidence-of-cancer-observed-in-hiv-hepatitis-c-virus-coinfected-patients-versus-hiv-monoinfected
#20
Héctor Meijide, Sonia Pértega, Iria Rodríguez-Osorio, Ángeles Castro-Iglesias, Josefa Baliñas, Guillermo Rodríguez-Martínez, Álvaro Mena, Eva Poveda
BACKGROUND: Cancer is a growing problem in persons living with HIV infection (PLWH) and hepatitis C virus (HCV) coinfection could play an additional role in carcinogenesis. Herein, all cancers in an HIV-mono and HIV/HCV-coinfected cohort were evaluated and compared to identify any differences between these two populations. METHODS: A retrospective cohort study was conducted including all cancers in PLWH between 1993 and 2014. Cancers were classified in two groups: AIDS-defining cancer (ADC) and non-AIDS-defining cancer (NADC)...
May 15, 2017: AIDS
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