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https://www.readbyqxmd.com/read/29789956/hepatitis-c-current-controversies-and-future-potential-in-solid-organ-transplantation
#1
REVIEW
Lucy Somerville, Karen Doucette
PURPOSE OF REVIEW: To highlight the changing landscape of hepatitis C virus (HCV) infection in the context of organ transplantation. This focuses on areas of controversy and future potential in the era of highly effective direct-acting antiviral (DAA) agents. RECENT FINDINGS: Since the advent of safe and highly effective DAA therapy, HCV infection is now curable in virtually all cases, including organ transplant recipients. Excellent drug tolerability and safety combined with high cure rates across all organ groups means that HCV is no longer a barrier to transplantation or its outcomes...
May 22, 2018: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/29780129/successful-ombitasvir-paritaprevir-ritonavir-plus-ribavirin-retreatment-for-a-chronic-hepatitis-c-genotype-2a-patient-who-relapsed-after-sofosbuvir-plus-ribavirin-treatment-a-case-report
#2
Toru Ishikawa, Michitaka Imai, Takashi Owaki, Hiroki Sato, Yujiro Nozawa, Tomoe Sano, Akito Iwanaga, Keiichi Seki, Terasu Honma, Toshiaki Yoshida
The optimum retreatment strategy for chronic hepatitis C virus (HCV) patients who failed directly-acting antiviral agents (DAA)-based therapy is unknown. We herein report the outcomes of an HCV genotype (GT) 2a-infected patient with virologic failure following treatment with sofosbuvir plus ribavirin (SOF + RBV) who was successfully retreated with ombitasvir/paritaprevir/ritonavir plus ribavirin (OBV/PTV/r + RBV).
May 18, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29779403/lipids-glucose-and-iron-metabolic-alterations-in-chronic-hepatitis-c-after-viral-eradication-comparison-of-the-new-direct-acting-antiviral-agents-with-the-old-regimens
#3
Joana Rita Carvalho, José Velosa, Fátima Serejo
BACKGROUND: Hepatitis C virus (HCV) is a unique virus which interacts with cholesterol, iron and insulin metabolism. There is limited data on the effects of direct-acting antiviral agents (DAAs) on metabolic profiles. We aimed at evaluating the behavior of metabolic risk factors of chronically HCV-infected patients after sustained virologic response (SVR), comparing the outcomes with the new DAAs versus the old treatment regimen Peg-interferon ± ribavirin. METHODS: A total of 178 patients who achieved SVR and completed one year of follow-up were prospectively included in this study: group 1 with 105 patients treated with DAAs and group 2 with 73 patients treated with old regimens...
May 20, 2018: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/29778266/estimation-of-hepatitis-c-disease-burden-and-budget-impact-of-treatment-using-health-economic-modeling
#4
REVIEW
Jagpreet Chhatwal, Qiushi Chen, Rakesh Aggarwal
Oral direct-acting antiviral agents have revolutionized treatment of hepatitis C virus (HCV) infection. Nonetheless, barriers exist to elimination of HCV as a public health threat including low uptake of treatment, limited budget allocations for HCV treatment, and low awareness rates of HCV status among infected people. Mathematical modeling provides a systematic framework to analyze and compare potential solutions and elimination strategies by simulating the HCV epidemic under different conditions. Such models evaluate impact of interventions in advance of implementation...
June 2018: Infectious Disease Clinics of North America
https://www.readbyqxmd.com/read/29775725/anti-hepatitis-c-virus-activity-and-synergistic-effect-of-nymphaea-alba-extracts-and-bioactive-constituents-in-liver-infected-cells
#5
Sidra Rehman, Usman Ali Ashfaq, Bushra Ijaz, Sheikh Riazuddin
BACKGROUND: Without an effective vaccine, hepatitis C virus (HCV) remains a global threat, inflicting 170-300 million carriers worldwide at risk of cirrhosis and hepatocellular carcinoma (HCC). Though various direct acting antivirals have been redeemed the hepatitis C treatment, a few restraints persist including possible side effects, viral resistance emergence, excessive cost which restricts its availability to a common person. HYPOTHESIS: There is no preventive HCV vaccine available today so the discovery of potent antiviral natural flora and their bioactive constituents may help to develop preventive cures against HCV infection...
May 15, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29774177/the-new-direct-antiviral-agents-and-hepatitis-c-in-thoracic-transplantation-impact-on-donors-and-recipients
#6
REVIEW
Robert L Gottlieb, Shelley A Hall
Purpose of Review: The landscape of abdominal organ transplantation has been altered by the emergence of curative direct-acting antiviral agents for hepatitis C. Expansion of the thoracic donor pool to include the hearts and the lungs from hepatitis C-positive donors holds promise to increase available donor organs. Recent Findings: Case reports have documented separate lung and heart transplant patients who acquired, and then were cured of, donor-derived hepatitis C using these newer, more effective therapies...
2018: Current Transplantation Reports
https://www.readbyqxmd.com/read/29773899/management-of-acute-hcv-infection-in-the-era-of-direct-acting-antiviral-therapy
#7
REVIEW
Marianne Martinello, Behzad Hajarizadeh, Jason Grebely, Gregory J Dore, Gail V Matthews
The management of acute HCV infection has not been standardized following the availability of direct-acting antiviral agents (DAAs) for chronic HCV infection, and substantial uncertainty exists regarding the optimal treatment regimen and duration. Despite the lack of direct evidence, the 2016 American Association for the Study of Liver Diseases (AASLD)-Infectious Diseases Society of America (IDSA) guidelines supported "the same regimens for acute HCV as recommended for chronic HCV infection … owing to high efficacy and safety", whereas the 2016 European Association for the Study of the Liver (EASL) guidelines recommended sofosbuvir-ledipasvir, sofosbuvir-velpatasvir or sofosbuvir plus daclatasvir for 8 weeks in acute HCV infection, with a longer duration of 12 weeks recommended for those infected with HIV and/or baseline HCV RNA levels >1,000,000 IU/ml...
May 17, 2018: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29772717/a-rapid-screen-for-host-encoded-mirnas-with-inhibitory-effects-against-ebola-virus-using-a-transcription-and-replication-competent-virus-like-particle-system
#8
Zhongyi Wang, Jiaming Li, Yingying Fu, Zongzheng Zhao, Chunmao Zhang, Nan Li, Jingjing Li, Hongliang Cheng, Xiaojun Jin, Bing Lu, Zhendong Guo, Jun Qian, Linna Liu
MicroRNAs (miRNAs) may become efficient antiviral agents against the Ebola virus (EBOV) targeting viral genomic RNAs or transcripts. We previously conducted a genome-wide search for differentially expressed miRNAs during viral replication and transcription. In this study, we established a rapid screen for miRNAs with inhibitory effects against EBOV using a tetracistronic transcription- and replication-competent virus-like particle (trVLP) system. This system uses a minigenome comprising an EBOV leader region, luciferase reporter, VP40, GP, VP24, EBOV trailer region, and three noncoding regions from the EBOV genome and can be used to model the life cycle of EBOV under biosafety level (BSL) 2 conditions...
May 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29771105/direct-acting-antiviral-agents-in-patients-with-hepatitis-c-genotype-1-4-infections-in-a-tertiary-hospital
#9
J C Del Rio-Valencia, R Asensi-Diez, L Villalobos-Torres, I Muñoz Castillo
OBJECTIVE: Hepatitis C virus (HCV) infection is a major cause of chronic liver disease. Six different genotypes (GT) of HCV (genotypes 1-6) have been identified. The genotype is clinically relevant since the majority of current direct antiviral agents (DAA´s) do not have pangenotypic efficacy. The purpose of this study was to describe the clinical characteristics of real world patients and evaluate the effectiveness of different treatment regimens. METHODS: Retrospective and observational study carried out in a third level hospital...
May 16, 2018: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/29762255/ombitasvir-paritaprevir-ritonavir-dasabuvir-ribavirin-for-chronic-hepatitis-c-virus-genotype-1b-infected-cirrhotics-turquoise-iv
#10
Vasily Isakov, Dzmitry Paduta, Rolando M Viani, Jeffrey V Enejosa, Viktor Pasechnikov, Olga Znoyko, Pavel Ogurtsov, Pavel O Bogomolov, Marina V Maevskaya, Xiaotian Chen, Nancy S Shulman
OBJECTIVE: An estimated 336 per 100 000 people in Russia are infected with hepatitis C virus, including up to 75% with genotype (GT) 1b. In the TURQUOISE-II/-III trials, a 12-week regimen of the direct-acting antiviral agents ombitasvir (OBV), paritaprevir (PTV), ritonavir, and dasabuvir (DSV) in GT1b-infected patients with compensated cirrhosis resulted in 12-week sustained virologic response (SVR) rates of 100%. PATIENTS AND METHODS: In TURQUOISE-IV, GT1b-infected patients (n=36) from Russia and Belarus with compensated cirrhosis, who were treatment naive or previously treated with pegylated interferon/ribavirin (RBV), received OBV/PTV/ritonavir+DSV+RBV for 12 weeks...
May 14, 2018: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29758235/innovation-and-trends-in-the-development-and-approval-of-antiviral-medicines-1987-2017-and-beyond
#11
REVIEW
Shuvam Chaudhuri, Julian A Symons, Jerome Deval
2017 marked the 30th anniversary of the approval of zidovudine (AZT) as the first HIV/AIDS therapy. Since then, more than eighty antiviral drugs have received FDA approval, half of which treat HIV infection. Here, we provide a retrospective analysis of approved antiviral drugs, including therapeutics against other major chronic infections such as hepatitis B and C, and herpes viruses, over the last thirty years. During this time, only a few drugs were approved to treat acute viral infections, mainly influenza...
May 15, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29757684/an-account-of-the-real-life-hepatitis-c-management-in-a-single-specialized-viral-hepatitis-treatment-centre-in-egypt-results-of-treating-7042-patients-with-7-different-direct-acting-antiviral-regimens
#12
Mohamed El Kassas, Mohamed Alboraie, Dalia Omran, Mohamed Salaheldin, Mohamed Naguib Wifi, Mohamed ElBadry, Adel El Tahan, Sameera Ezzat, Enass Moaz, Amir M Farid, Heba Omar, Mahmoud Abouelkhair, Shimaa Afify, Kadry Elsaeed, Yehia Shazly, Wahid Doss, Gamal Esmat
BACKGROUND: A large Egyptian treatment program for HCV was launched in 2014 after the introduction of direct-acting antiviral agents (DAAs). This program depended mainly on establishing specialized independent centres for HCV treatment. These centres represent the major strengths in the Egyptian model of care, as they provide integrated care for HCV patients and have enabled Egypt to treat more than one million patients in 3 years. The New Cairo Viral Hepatitis Treatment Center (NCVHTC) is an example of these specialized centres...
May 14, 2018: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29750893/disparities-in-initiation-of-direct-acting-antiviral-agents-for-hepatitis-c-virus-infection-in-an-insured-population
#13
Julia L Marcus, Leo B Hurley, Scott Chamberland, Jamila H Champsi, Laura C Gittleman, Daniel G Korn, Jennifer B Lai, Jennifer O Lam, Mary Pat Pauly, Charles P Quesenberry, Joanna Ready, Varun Saxena, Suk I Seo, David J Witt, Michael J Silverberg
OBJECTIVES: The cost of direct-acting antiviral agents (DAAs) for hepatitis C virus (HCV) infection may contribute to treatment disparities. However, few data exist on factors associated with DAA initiation. METHODS: We conducted a retrospective cohort study of HCV-infected Kaiser Permanente Northern California members aged ≥18 during October 2014 to December 2016, using Poisson regression models to evaluate demographic, behavioral, and clinical factors associated with DAA initiation...
January 1, 2018: Public Health Reports
https://www.readbyqxmd.com/read/29744934/modelling-how-reversal-of-immune-exhaustion-elicits-cure-of-chronic-hepatitis-c-after-the-end-of-treatment-with-direct-acting-antiviral-agents
#14
Subhasish Baral, Rahul Roy, Narendra M Dixit
A fraction of chronic hepatitis C patients treated with direct-acting antivirals (DAAs) achieved sustained virological responses (SVR), or cure, despite having detectable viremia at the end of treatment (EOT). This observation, termed EOT+ /SVR, remains puzzling and precludes rational optimization of treatment durations. One hypothesis to explain EOT+ /SVR, the immunologic hypothesis, argues that the viral decline induced by DAAs during treatment reverses the exhaustion of cytotoxic T lymphocytes (CTLs), which then clear the infection after treatment...
May 9, 2018: Immunology and Cell Biology
https://www.readbyqxmd.com/read/29743789/direct-acting-antiviral-agents-for-hcv-infection
#15
EDITORIAL
Madhumita Premkumar, Radha K Dhiman
No abstract text is available yet for this article.
March 2018: Journal of Clinical and Experimental Hepatology
https://www.readbyqxmd.com/read/29739904/cd147-promotes-entry-of-pentamer-expressing-human-cytomegalovirus-into-epithelial-and-endothelial-cells
#16
Adam L Vanarsdall, Sarah R Pritchard, Todd W Wisner, Jing Liu, Ted S Jardetzky, David C Johnson
Human cytomegalovirus (HCMV) replicates in many diverse cell types in vivo , and entry into different cells involves distinct entry mechanisms and different envelope glycoproteins. HCMV glycoprotein gB is thought to act as the virus fusogen, apparently after being triggered by different gH/gL proteins that bind distinct cellular receptors or entry mediators. A trimer of gH/gL/gO is required for entry into all cell types, and entry into fibroblasts involves trimer binding to platelet-derived growth factor receptor alpha (PDGFRα)...
May 8, 2018: MBio
https://www.readbyqxmd.com/read/29737209/inhibitory-effects-of-amentoflavone-and-orobol-on-daclatasvir-induced-resistance-associated-variants-of-hepatitis-c-virus
#17
Wei-Ping Lee, Keng-Li Lan, Shi-Xian Liao, Yi-Hsiang Huang, Ming-Chih Hou, Keng-Hsin Lan
Hepatitis C virus (HCV) is recognized as a major causative agent of chronic hepatitis, cirrhosis, and hepatocellular carcinoma. Despite rapid progress in the development of direct-acting antivirals (DAA) against HCV infection in recent years, cost-effective antiviral drugs with more affordable prices still need to be developed. In this study, we screened a library of natural compounds to identify natural HCV inhibitors. The library of the pure compounds extracted from Chinese herbs deposited in the chemical bank of National Research Institute of Chinese Medicine (NRICM), Taiwan was screened in the cell culture-derived HCV (HCVcc) system...
May 8, 2018: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/29731169/identification-of-near-pan-neutralizing-antibodies-against-hiv-1-by-deconvolution-of-plasma-humoral-responses
#18
Mohammad Mohseni Sajadi, Amir Dashti, Zahra Rikhtegaran Tehrani, William D Tolbert, Michael S Seaman, Xin Ouyang, Neelakshi Gohain, Marzena Pazgier, Dongkyoon Kim, Guy Cavet, Jean Yared, Robert R Redfield, George K Lewis, Anthony L DeVico
Anti-HIV-1 envelope broadly neutralizing monoclonal antibodies (bNAbs) isolated from memory B cells may not fully represent HIV-1-neutralizing profiles measured in plasma. Accordingly, we characterized near-pan-neutralizing antibodies extracted directly from the plasma of two "elite neutralizers." Circulating anti-gp120 polyclonal antibodies were deconvoluted using proteomics to guide lineage analysis of bone marrow plasma cells. In both subjects, a single lineage of anti-CD4-binding site (CD4bs) antibodies explained the plasma-neutralizing activity...
April 28, 2018: Cell
https://www.readbyqxmd.com/read/29712653/direct-activation-of-adenosine-monophosphate-activated-protein-kinase-ampk-by-pf-06409577-inhibits-flavivirus-infection-through-modification-of-host-cell-lipid-metabolism
#19
Nereida Jiménez de Oya, Ana-Belén Blázquez, Josefina Casas, Juan-Carlos Saiz, Miguel A Martín Acebes
Mosquito-borne flaviviruses are a group of RNA viruses that constitute global threats for human and animal health. Replication of these pathogens is strictly dependent on cellular lipid metabolism. We have evaluated the effect of the pharmacological activation of Adenosine Monophosphate-activated Protein Kinase (AMPK), a master regulator of lipid metabolism, on the infection of three medically relevant flaviviruses: West Nile virus (WNV), Zika virus (ZIKV) and dengue virus (DENV). WNV is responsible for recurrent outbreaks of meningitis and encephalitis affecting humans and horses worldwide...
April 30, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29702515/integrated-care-for-the-use-of-direct-acting-antivirals-in-patients-with-chronic-hepatitis-c-and-substance-use-disorder
#20
Jean-Baptiste Trabut, Camille Barrault, Hélène Charlot, Damien Carmona, Anne Bourdel, Mustapha Benslimane, Murielle François, Willy Kini-Matondo, Richard Causse, Françoise Roudot-Thoraval, Christophe Hézode
OBJECTIVES: Since little is currently known about predictors of response to direct-acting antiviral agents (DAAs) in people who inject drugs, we undertook an analysis of patients attending a hepatitis clinic with addiction services (outpatient clinics and inpatient services) to examine the outcomes associated with the treatment of difficult-to-manage patients with substance use. Our experience was based on integrated care. METHOD: A retrospective analysis was undertaken of 50 patients with hepatitis C virus (HCV) and a history of addiction who received treatment with DAAs, according to European guidelines...
April 26, 2018: Journal of Addiction Medicine
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