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https://www.readbyqxmd.com/read/27902325/targeting-naturally-occurring-epitope-variants-of-hepatitis-c-virus-with-high-affinity-t-cell-receptors
#1
Huajun Zhang, Jianbing Zhang, Lei Chen, Zhiming Weng, Ye Tian, Haifeng Zhao, Youjia Li, Lin Chen, Zhaoduan Liang, Hongjun Zheng, Wenzhuo Zhao, Shi Zhong, Yi Li
Hepatitis C virus (HCV) readily establishes chronic infection, which is characterized by failure of virus-specific CD8+ T cells. HCV uses epitope mutation and T-cell exhaustion to escape from the host immune response. Previously, we engineered high-affinity T-cell receptors (HATs) targeting HIV escape mutants. In this study, the affinity of a T-cell receptor specific for the human leukocyte antigen (HLA)-A2-restricted HCV immunodominant epitope NS3 1406-1415 (KLVALGINAV) was improved from a KD of 6.6 µM to 40 pM...
November 11, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27898593/coinfection-with-hiv-and-hepatitis-c-virus-in-229-children-and-young-adults-living-in-europe
#2
(no author information available yet)
OBJECTIVE: To characterize children, adolescents and young adults infected with HIV/hepatitis C virus (HCV) vertically or before age of 18 years and living in Europe regarding mode of acquisition, HCV genotype, clinical status and treatment. DESIGN: Retrospective, cross-sectional study using pooled data from 11 European paediatric HIV cohorts. METHODS: Patients aged more than 18 months and less than 25 years, with HIV/HCV acquired vertically or in childhood, were included...
January 2, 2017: AIDS
https://www.readbyqxmd.com/read/27898592/the-hepatitis-c-virus-nonstructural-protein-3-q80k-polymorphism-is-frequently-detected-and-transmitted-among-hiv-infected-msm-in-the-netherlands
#3
Astrid M Newsum, Cynthia K Y Ho, Faydra I Lieveld, Thijs J W van de Laar, Sylvie M Koekkoek, Sjoerd P Rebers, Jan T M van der Meer, Anne M J Wensing, Greet J Boland, Joop E Arends, Karel J van Erpecum, Maria Prins, Richard Molenkamp, Janke Schinkel
OBJECTIVES: The Q80K polymorphism is a naturally occurring resistance-associated variant in the hepatitis C virus (HCV) nonstructural protein 3 (NS3) region and is likely transmissible between hosts. This study describes the Q80K origin and prevalence among HCV risk groups in the Netherlands and examines whether Q80K is linked to specific transmission networks. DESIGN AND METHODS: Stored blood samples from HCV genotype 1a-infected patients were used for PCR and sequencing to reconstruct the NS3 maximum likelihood phylogeny...
January 2, 2017: AIDS
https://www.readbyqxmd.com/read/27898525/characterization-of-hcv-ns3-protease-variants-in-hcv-hiv-coinfected-patients-by-ultra-deep-sequence-analysis-relationship-to-hepatic-fibrosis
#4
Enass A Abdel-Hameed, Susan D Rouster, Xiang Zhang, Jing Chen, Mario Medvedovic, Zachary D Goodman, Kenneth E Sherman
BACKGROUND: Treatment of HCV/HIV coinfection is now largely based upon utilization of direct acting agents. Pre-treatment viral resistant-associated variants (RAVs) and host liver condition may affect the sustained virological response. In this study, we explored relative prevalence of protease resistance-associated mutations, the evolution of those RAVs following 12 weeks of pegylated interferon alfa exposure, and the role hepatic fibrosis might have on RAV display. METHODS: Thirty nonresponder HCV/ HIV coinfected subjects were evaluated pre- and post- 12 weeks of pegIFN treatment...
November 25, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27896875/disseminated-cobblestone-like-skin-lumps-in-a-newborn
#5
Z X Ren, H Q Jiang, L X Zhang, Q D Deng, J Y Zhang, X P Mu, J Yang
An newborn boy showed multiple skin lumps at birth. On examination, there were disseminated red cobblestone-like skin neoplasms, 5-30mm in diameter with hard serosanguineous crust, some were with scabs, over the scalp, face, trunk and extremities (Fig. 1A,B). The liver was 3 cm palpable below the costal margin. He was active and stable. The mother' prenatal investigation on antibodies of rubella, herpes simplex virus (HSV) and hepatitis B surface antigen were positive. The baby's antibodies for HAV, HBV, HCV, rubella, HSV, HIV and syphilis were negative...
November 29, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/27896573/greater-decline-in-memory-and-global-neurocognitive-function-in-hiv-hepatitis-c-co-infected-than-in-hepatitis-c-mono-infected-patients-treated-with-pegylated-interferon-and-ribavirin
#6
Theodore R Miller, Jeffrey J Weiss, Norbert Bräu, Douglas T Dieterich, Alicia Stivala, Monica Rivera-Mindt
The human immunodeficiency virus (HIV), hepatitis C virus (HCV), and the treatment of HCV with pegylated interferon and ribavirin (IFN/RBV) have been associated with neurocognitive and psychiatric abnormalities. The goal of this research was to prospectively evaluate neurocognitive functioning among a group of HCV mono-infected and HIV/HCV co-infected patients during the first 24 weeks of IFN/RBV treatment while accounting for practice effects, normal variations in change over time, and variations in IFN/RBV treatment exposure...
November 28, 2016: Journal of Neurovirology
https://www.readbyqxmd.com/read/27891360/why-should-viral-markers-be-mandatory-in-ocular-surgeries-a-hospital-based-retrospective-study
#7
Anita Ambastha, Rakhi Kusumesh, Gyan Bhasker
INTRODUCTION: Hepatitis B Virus (HBV), Hepatitis C Virus (HCV) and Human Immunodeficiency Virus I, II (HIV-I,II) are serious global and public health problem. Knowledge of the seroprevalence would enable early diagnosis, treatment of patients and also help in prevention of horizontal spread of infection by application of universal infection control measures. AIM: To determine the seroprevalence of HBV, HCV and HIV I, II infection in patients undergoing ocular surgery...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27888664/ebv-associated-but-hhv8-unrelated-double-hit-effusion-based-lymphoma
#8
Bo-Jung Chen, David Yen-Ting Chen, Chun-Chi Kuo, Shih-Sung Chuang
Effusion-based lymphoma is a rare and unique type of large B-cell lymphoma presenting in effusion without a mass lesion. It shares many clinicopathological features with primary effusion lymphoma (PEL), but is distinct from PEL by the absence of HHV8 association. Double hit lymphoma (DHL) is an aggressive B-cell lymphoma, defined by concurrent rearrangement of MYC and BCL2 or BCL6. DHL often presents as lymphadenopathy or an extranodal mass, but rarely occurs in effusion. Here we report a 61-year-old male with alcoholic cirrhosis presenting as massive ascites and left pleural effusion...
November 26, 2016: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/27888126/understanding-the-complex-evolution-of-rapidly-mutating-viruses-with-deep-sequencing-beyond-the-analysis-of-viral-diversity
#9
REVIEW
Preston Leung, Auda A Eltahla, Andrew R Lloyd, Rowena A Bull, Fabio Luciani
With the advent of affordable deep sequencing technologies, detection of low frequency variants within genetically diverse viral populations can now be achieved with unprecedented depth and efficiency. The high-resolution data provided by next generation sequencing technologies is currently recognised as the gold standard in estimation of viral diversity. In the analysis of rapidly mutating viruses, longitudinal deep sequencing datasets from viral genomes during individual infection episodes, as well as at the epidemiological level during outbreaks, now allow for more sophisticated analyses such as statistical estimates of the impact of complex mutation patterns on the evolution of the viral populations both within and between hosts...
November 22, 2016: Virus Research
https://www.readbyqxmd.com/read/27882706/high-frequency-of-potential-interactions-between-direct-acting-antivirals-and-concomitant-therapy-in-hiv-hepatitis-c-virus-coinfected-patients-in-clinical-practice
#10
J Macías, P Monge, M Mancebo, N Merchante, K Neukam, L M Real, J A Pineda
OBJECTIVES: The aim of the study was to analyse the frequency and degree of potential drug-drug interactions (DDIs) between direct-acting antivirals (DAAs) and concomitant medication used by HIV/hepatitis C virus (HCV)-coinfected patients, including antiretroviral therapy (ART) and other drugs. METHODS: All patients with HIV infection and viraemic HCV genotype 1, 3 or 4 coinfection attending a tertiary care centre in Spain (November 2014 to November 2015) were included in the study...
November 24, 2016: HIV Medicine
https://www.readbyqxmd.com/read/27882678/a-molecular-transmission-network-of-recent-hepatitis-c-infection-in-people-with-and-without-hiv-implications-for-targeted-treatment-strategies
#11
S R Bartlett, J O Wertheim, R A Bull, G V Matthews, F M J Lamoury, K Scheffler, M Hellard, L Maher, G J Dore, A R Lloyd, T L Applegate, J Grebely
Combining phylogenetic and network methodologies has the potential to better inform targeted interventions to prevent and treat infectious diseases. This study reconstructed a molecular transmission network for people with recent hepatitis C virus (HCV) infection and modelled the impact of targeting directly acting antiviral (DAA) treatment for HCV in the network. Participants were selected from three Australian studies of recent HCV from 2004 to 2014. HCV sequence data (Core-E2) from participants at the time of recent HCV detection were analysed to infer a network by connecting pairs of sequences whose divergence was ≤...
November 24, 2016: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27882070/serological-patterns-and-molecular-characterization-of-occult-hepatitis-b-virus-infection-among-blood-donors
#12
Hong Lin, Hong Zhao, Xinyi Tang, Wenjia Hu, Nizheng Jiang, Shaowen Zhu, Chengyin Huang
BACKGROUND: Hepatitis B infections, characterized by the presence of a viral genome without detectable hepatitis B surface antigen (HBsAg; Occult hepatitis B infection [OBI]), have been reported recently. OBJECTIVES: We performed serological and molecular characterization of OBI among blood donors at Jiangsu province blood center during years 2013 and 2014. METHODS: All donor samples were routinely screened by double enzyme-linked immunosorbent assay (ELISA) for hepatitis C virus (HCV), hepatitis B virus (HBV), human immunodeficiency virus (HIV), Treponema pallidum (TP), and alanine aminotransferase (ALT)...
October 2016: Hepatitis Monthly
https://www.readbyqxmd.com/read/27881614/performance-characteristics-of-a-new-consensus-commercial-kit-for-hepatitis-d-virus-rna-viral-load-quantification
#13
Frédéric Le Gal, Samira Dziri, Athenaïs Gerber, Chakib Alloui, Zahia Ben Abdesselam, Dominique Roulot, Ségolène Brichler, Emmanuel Gordien
Hepatitis Delta virus (HDV) is responsible for fulminant hepatitis and liver failure, and accelerates evolution towards cirrhosis and hepatocellular carcinoma in hepatitis B virus-infected patients. To date treatment relies upon long-term administration of pegylated alpha-interferon with sustained virological response in 30% of the patients. Very recently, new promising anti HDV therapies have been developed and are already used in clinical trials. HDV-RNA viral load (HDVL) monitoring must be an integral part of the management of the infected-patients...
November 23, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27875997/identification-of-the-transcripts-associated-with-spontaneous-hcv-clearance-in-individuals-co-infected-with-hiv-and-hcv
#14
Yue Chen, Chengli Shen, Debjani Guha, Ming Ding, Scott Kulich, Aiymkul Ashimkhanova, Charles Rinaldo, Eric Seaberg, Joseph B Margolick, Valentina Stosor, Otoniel Martínez-Maza, Phalguni Gupta
BACKGROUND: Infection with human immunodeficiency virus (HIV) influences the outcome and natural disease progression of hepatitis C virus (HCV) infection. While the majority of HCV mono-infected and HCV/HIV co-infected subjects develop chronic HCV infection, 20-46% of mono- and co-infected subjects spontaneously clear HCV infection. The mechanism underlying viral clearance is not clearly understood. Analysis of differential cellular gene expression (mRNA) between HIV-infected patients with persistent HCV infection or spontaneous clearance could provide a unique opportunity to decipher the mechanism of HCV clearance...
November 22, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27872683/safe-and-effective-sofosbuvir-based-therapy-in-patients-with-mental-health-disease-on-hepatitis-c-virus-treatment
#15
Lydia Shuk Yee Tang, Jack Masur, Zayani Sims, Amy Nelson, Anu Osinusi, Anita Kohli, Sarah Kattakuzhy, Michael Polis, Shyam Kottilil
AIM: To study impact of baseline mental health disease on hepatitis C virus (HCV) treatment; and Beck's Depression Inventory (BDI) changes with sofosbuvir- and interferon-based therapy. METHODS: This is a retrospective cohort study of participants from 5 studies enrolled from single center trials conducted at the Clinical Research Center of the National Institutes of Health, Bethesda, MD, United States. All participants were adults with chronic HCV genotype 1 infection and naïve to HCV therapy...
November 8, 2016: World Journal of Hepatology
https://www.readbyqxmd.com/read/27872681/alcohol-use-disorder-and-its-impact-on-chronic-hepatitis-c-virus-and-human-immunodeficiency-virus-infections
#16
REVIEW
Daniel Fuster, Arantza Sanvisens, Ferran Bolao, Inmaculada Rivas, Jordi Tor, Robert Muga
Alcohol use disorder (AUD) and hepatitis C virus (HCV) infection frequently co-occur. AUD is associated with greater exposure to HCV infection, increased HCV infection persistence, and more extensive liver damage due to interactions between AUD and HCV on immune responses, cytotoxicity, and oxidative stress. Although AUD and HCV infection are associated with increased morbidity and mortality, HCV antiviral therapy is less commonly prescribed in individuals with both conditions. AUD is also common in human immunodeficiency virus (HIV) infection, which negatively impacts proper HIV care and adherence to antiretroviral therapy, and liver disease...
November 8, 2016: World Journal of Hepatology
https://www.readbyqxmd.com/read/27869328/real-life-efficacy-and-safety-of-paritaprevir-ritonavir-ombitasvir-and-dasabuvir-in-chronic-hepatitis-c-patients-in-hong-kong
#17
Henry Lik-Yuen Chan, Owen Tak-Yin Tsang, Yee-Tak Hui, James Fung, Grace Chung-Yan Lui, Ching-Lung Lai, Grace Lai-Hung Wong, Kam-Hon Chan, David Yiu-Kuen But, Moon-Sing Lai, Wai-Cheung Lao, Carmen Ka-Man Chan, Yip-Shun Lam, Wai-Kay Seto, Carlton Li, Man-Fung Yuen, Vincent Wai-Sun Wong
BACKGROUND AND AIM: In registration studies, combination therapy of paritaprevir/ritonavir, ombitasvir and dasabuvir (PrOD) with and without ribavirin for 12-24 weeks can achieve >90% sustained virological response (SVR) for genotype 1 hepatitis C virus (HCV) infection. However, data in Asia is scanty. We aimed to study the efficacy and safety of this combination therapy in chronic hepatitis C patients in Hong Kong. METHODS: We retrospectively analyzed data from 6 local hospitals which have prescribed PrOD with and without ribavirin to patients with genotype 1 chronic HCV infection as part of a global compassionate program...
November 21, 2016: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/27867437/sero-prevalence-and-correlates-of-hepatitis-b-and-c-co-infection-among-hiv-infected-individuals-in-two-regional-hospitals-in-cameroon
#18
Henry Namme Luma, Servais Albert Fiacre Bagnaka Eloumou, Domin Sone Majunda Ekaney, Fernando Kemta Lekpa, Olivier Donfack-Sontsa, Bertrand Hugo Mbatchou Ngahane, Yacouba Njankouo Mapoure
BACKGROUND: Liver disease related to Hepatitis B (HBV) and C (HCV) infection has become a major cause of morbidity and mortality in HIV/AIDS patients. Data on the prevalence of HBV and HCV in Cameroon remains inconclusive. OBJECTIVE: We aimed to determine the sero-prevalence and correlates of Hepatitis markers in HIV/AIDS patients in two Regional Hospitals. METHODS: A cross-sectional study carried out from December 2014 to March 2015. HIV/AIDS patients aged 21 were included and above, receiving care at HIV treatment centres...
2016: Open AIDS Journal
https://www.readbyqxmd.com/read/27858889/correlates-of-infection-and-molecular-characterization-of-blood-borne-hiv-hcv-and-hbv-infections-in-hiv-1-infected-inmates-in-italy-an-observational-cross-sectional-study
#19
Nunzia Sanarico, Stefania D'Amato, Roberto Bruni, Claudia Rovetto, Emanuela Salvi, Patrizia Di Zeo, Paola Chionne, Elisabetta Madonna, Giulio Pisani, Angela Costantino, Michele Equestre, Maria E Tosti, Alessandra Cenci, Maria T Maggiorella, Leonardo Sernicola, Emanuele Pontali, Alfredo Pansera, Rocco Quattrocchi, Sergio Carbonara, Fabio Signorile, Lorenzo Antonio Surace, Guido Federzoni, Elisa Garlassi, Giulio Starnini, Roberto Monarca, Sergio Babudieri, Maria Rapicetta, Maria G Pompa, Anna Caraglia, Barbara Ensoli, Anna R Ciccaglione, Stefano Buttò
Coinfection of blood-borne hepatitis B and hepatitis C viruses (HBV and HCV, respectively) in human immunodeficiency virus type 1 (HIV-1)-positive individuals frequently occurs in inmate population and peculiar viral strains and patterns of virological markers may be observed.Plasma from 69 HIV-1-positive inmates was obtained from 7 clinical centers connected with correctional centers in different towns in Italy. HIV, HBV, and HCV markers were tested by commercial assays. Virus genotyping was carried out by sequencing the protease and reverse transcriptase-encoding region (PR-RT region) for HIV and a region encompassing the NS5B gene for HCV and subsequent phylogenetic analysis...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27857152/inactivation-of-hcv-and-hiv-by-microwave-a-novel-approach-for-prevention-of-virus-transmission-among-people-who-inject-drugs
#20
Anindya Siddharta, Stephanie Pfaender, Angelina Malassa, Juliane Doerrbecker, Anggakusuma, Michael Engelmann, Boya Nugraha, Joerg Steinmann, Daniel Todt, Florian W R Vondran, Pedro Mateu-Gelabert, Christine Goffinet, Eike Steinmann
Hepatitis C virus (HCV) and human immunodeficiency virus (HIV-1) transmissions among people who inject drugs (PWID) continue to pose a challenging global health problem. Here, we aimed to analyse a universally applicable inactivation procedure, namely microwave irradiation, as a safe and effective method to reduce the risk of viral transmission. The exposure of HCV from different genotypes to microwave irradiation resulted in a significant reduction of viral infectivity. Furthermore, microwave irradiation reduced viral infectivity of HIV-1 and of HCV/HIV-1 suspensions indicating that this inactivation may be effective at preventing co-infections...
November 18, 2016: Scientific Reports
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