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https://www.readbyqxmd.com/read/29341226/molecular-details-of-spontaneous-insertion-and-interaction-of-hcv-non-structure-3-protease-protein-domain-with-pip2-containing-membrane
#1
Huynh Minh Hung, Tran Dieu Hang, Minh Tho Nguyen
Hepatitis C virus (HCV), known as the leading cause of liver cirrhosis, viral hepatitis and hepatocellular carcinoma, has been affecting more than 150 million people globally. The HCV non-structure 3 (NS3) protease protein domain plays a key role in HCV replication and pathogenesis; and is currently a primary target for HCV antiviral therapy. Through unbiased molecular dynamics simulations which take advantage of the novel highly mobile membrane mimetic model, we constructed the membrane-bound state of the protein domain at the atomic level...
January 17, 2018: Proteins
https://www.readbyqxmd.com/read/29340620/delivery-of-tapasin-modified-ctl-epitope-peptide-via-cytoplasmic-transduction-peptide-induces-ctls-by-jak-stat-signaling-pathway-in-vivo
#2
Shanshan Wu, Xiaohua Chen, Yuyan Tang, Yi Zhang, Dan Li, Jie Chen, Jieling Wang, Zhenghao Tang, Guoqing Zang, Yongsheng Yu
Hepatitis B virus (HBV)-specific cytotoxic T lymphocytes (CTLs) play a vital role in viral control and clearance. Recent studies have elucidated that Tapasin, an endoplasmic reticulum chaperone, is a well-known molecule that appears to be essential in peptide-loading process. The Janus kinase/signal transducers and activators of transcription (JAK/STAT) pathway plays an important role in immune response regulation and cytokines secretion. We have previously verified that fusion protein CTP-HBcAg18-27-Tapasin could facilitate the maturation of bone marrow derived dendritic cells and enhance specific CTLs responses in vitro, which might be associated with the activation of JAK/STAT signaling pathway...
January 11, 2018: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29340553/hepatocellular-carcinoma-diagnosis-and-operative-management
#3
Marcio F Chedid, Cleber R P Kruel, Marcelo A Pinto, Tomaz J M Grezzana-Filho, Ian Leipnitz, Cleber D P Kruel, Leandro A Scaffaro, Aljamir D Chedid
INTRODUCTION: Hepatocellular carcinoma is an aggressive malignant tumor with high lethality. AIM: To review diagnosis and management of hepatocellular carcinoma. METHODS: Literature review using web databases Medline/PubMed. RESULTS: Hepatocellular carcinoma is a common complication of hepatic cirrhosis. Chronic viral hepatitis B and C also constitute as risk factors for its development. In patients with cirrhosis, hepatocelular carcinoma usually rises upon malignant transformation of a dysplastic regenerative nodule...
October 2017: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
https://www.readbyqxmd.com/read/29340280/serum-vitamin-d-levels-in-treatment-na%C3%A3-ve-chronic-hepatitis-b-patients
#4
Ebada Said, Waleed El Agawy, Rehab Ahmed, Mohamed Hassany, Amal Ahmed, Hanan Fouad, Hosam Baiumy
Background and Objectives: According to the demographic health survey conducted in 2015, Egypt had 10% documented prevalence of anti-HBc positive patients aged 1-59 and 1% viremic patients amongst the population in the same age group, with a domination of genotype D. Several studies claimed the possible role of vitamin D deficiency in hepatitis B virus (HBV) replication and disease progression. Patients and Methods: Serum vitamin D levels [25(OH D3] were assessed in 96 HBeAg negative non-cirrhotic chronic HBV patients and 25 healthy subjects classified as following: Group I: 48 chronic HBV patients with persistently normal ALT levels and HBV DNA level < 2000 IU/mL for ≥ 6 months; Group II: 48 chronic HBV patients with CHB with persistently elevated ALT and HBV DNA level ≥ 2000 IU/mL for ≥ 6 months; and Group III: 25 apparently healthy subjects with normal liver enzymes and negative hepatitis viral markers were taken as the control group...
December 2017: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/29339154/a-new-hepatitis-b-virus-e-antigen-negative-strain-gene-used-as-a-reference-sequence-in-an-animal-model
#5
Min Cao, Zhonghua Zhao, Yuwei Tang, Qinglv Wei, Lei Wang, Qin Xiang, Yunmei Zhang, Huatang Zhang, Guoqi Lai
Infection with hepatitis B virus (HBV) e-antigen (HBeAg)-negative strains is increasingly prevalent. Currently, detailed information of the obtained natural HBV strain is not available except for the B genotype and HBeAg-negative. The aim of the present study was to characterize the natural genetic variation of the HBeAg-negative strain and investigate its function. The genic sequence was determined using Sanger sequencing, and compared to related sequences using alignment and phylogenetic analysis. In vivo, virus-specific serum markers were investigated in CBA/CaJ mice...
January 12, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29339060/quantification-of-a-recombinant-antigen-in-an-immuno-stimulatory-whole-yeast-cell-based-therapeutic-vaccine
#6
Jenny Wang, Daniel Stenzel, Ally Liu, Dengfeng Liu, Darren Brown, Alexandre Ambrogelly
Therapeutic vaccines represent an emerging class of immune-modulatory treatments for cancer, infections, and chronic diseases. One such vaccine was designed as an immune stimulator of the T cell response against HBV antigens to eliminate HBV infected cells and offer a therapeutic avenue to treat patients suffering from chronic hepatitis B infection. Whole deactivated Saccharomyces cerevisiae cells expressing a recombinant fusion of HBV X, S and Core antigens elicit T cell responses in mice and activate human T cells linked with viral clearance...
January 12, 2018: Analytical Biochemistry
https://www.readbyqxmd.com/read/29338763/sero-prevalence-of-hbsag-in-naive-hiv-infected-patients-in-a-rural-locality-of-cameroon
#7
Jean-Patrick Molu, Marie Chantal Ngonde Essome, Chavely Gwladys Monamele, Richard Njouom
OBJECTIVE: This study was performed in order to fill the gap of knowledge regarding sero-epidemiology of hepatitis B virus (HBV) amongst Human Immunodeficiency virus (HIV)-infected patients and to assess the risk factors associated with HBV co-infection in a rural locality of Cameroon. A retrospective and cross-sectional study was carried out from January 2008 to April 2014 within the Mfou District Hospital. Naive HIV-infected patients were enrolled in the study and tested for hepatitis B surface antigen (HBsAg)...
January 16, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29338458/tenofovir-alafenamide-taf-treatment-of-hbv-what-are-the-unanswered-questions
#8
Mauro Viganò, Alessandro Loglio, Glenda Grossi, Pietro Lampertico
Tenofovir disoproxil fumarate (TDF), an ester prodrug of tenofovir (TFV), is one of the recommended drugs for chronic hepatitis B (CHB) patients. However, reduced kidney function and loss of bone mineral density have been reported in some CHB patients treated with TDF. Consequent to these safety issues, tenofovir alafenamide (TAF) [Vemlidy®], a phosphonate prodrug of TFV, was developed for the treatment of CHB patients. Areas covered: The favourable pharmacological profile of TAF allows a marked reduction in dosage (25 mg/day) thus reducing systemic exposure to tenofovir and improving the bone and renal safety, keeping however the same virological efficacy, compared to TDF 300 mg/day...
January 17, 2018: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29337702/changing-concepts-of-hiv-infection-and-renal-disease
#9
Jean Hou, Cynthia C Nast
PURPOSE OF REVIEW: Human immunodeficiency virus (HIV)-associated nephropathy (HIVAN) was identified as the major renal manifestation of HIV infection early in the HIV epidemic. However, HIV infection now is associated with a different spectrum of renal lesions leading to chronic kidney disease. This review examines the changes in kidney injury occurring in the current HIV era and the factors involved in this transformation of disease expression. RECENT FINDINGS: The incidence of HIVAN and opportunistic infections in HIV-infected individuals has declined in concert with the use of effective combination antiretroviral agents...
January 13, 2018: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/29337616/chronologic-analysis-of-gross-and-histologic-lesions-induced-by-field-strains-of-fadv-1-fadv-8b-and-fadv-11-in-six-week-old-chickens
#10
Penelope Steer-Cope, Jeanine Sandy, Denise O'Rourke, Peter Scott, Glenn Browning, Amir Noormohammadi
Inclusion body hepatitis (IBH) is a disease affecting broiler chicken flocks worldwide. Several serotypes of fowl adenovirus (FAdV) have been implicated in disease outbreaks, with and without immunosuppression as a predisposing factor. IBH usually occurs in flocks up to 30 days of age; it is seldom seen in older birds. The objective of this study was to determine whether the pathogenicity for older birds of three FAdV field strains, belonging to serotypes 1, 8b, and 11, in the absence of immunosuppressive factors, was akin to that for younger birds, and to establish an effective and economical disease model for assessing cross-protection between serotypes...
December 2017: Avian Diseases
https://www.readbyqxmd.com/read/29334973/options-for-reducing-hiv-transmission-related-to-the-dead-space-in-needles-and-syringes
#11
William A Zule, Poonam G Pande, David Otiashvili, Georgiy V Bobashev, Samuel R Friedman, V Anna Gyarmathy, Don C Des Jarlais
BACKGROUND: When shared by people who inject drugs, needles and syringes with different dead space may affect the probability of HIV and hepatitis C virus (HCV) transmission differently. METHODS: We measured dead space in 56 needle and syringe combinations obtained from needle and syringe programs across 17 countries in Europe and Asia. We also calculated the amounts of blood and HIV that would remain in different combinations following injection and rinsing. RESULTS: Syringe barrel capacities ranged from 0...
January 15, 2018: Harm Reduction Journal
https://www.readbyqxmd.com/read/29334786/acute-on-chronic-liver-failure-in-chronic-hepatitis-b-an-update
#12
Rui-Hong Zhao, Yu Shi, Hong Zhao, Wei Wu, Ji-Fang Sheng
Acute-on-chronic liver failure is a common pattern of end-stage liver disease in clinical practice and occurs frequently in patients with chronic hepatitis B or HBV-related cirrhosis. New progress in recent years leads to a better understanding of this disease. Areas covered: This review updates the current comprehensive knowledge about HBV-ACLF from epidemiological studies, experimental studies, and clinical studies and provide new insights into the definition, diagnostic criteria, epidemiology, nature history, pathogenesis, treatment and prognostication of HBV-ACLF...
January 16, 2018: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29334550/chronic-hepatitis-c-virus-infection-and-subsequent-hiv-viral-load-among-women-with-hiv-initiating-antiretroviral-therapy
#13
Sarah J Willis, Stephen R Cole, Daniel Westreich, Andrew Edmonds, Christopher B Hurt, Svenja Albrecht, Kathryn Anastos, Michael Augenbraun, Margaret Fischl, Audrey L French, Aley G Kalapila, Roksana Karim, Marion G Peters, Michael Plankey, Eric C Seaberg, Phyllis C Tien, Adaora A Adimora
OBJECTIVE(S): One in four persons living with HIV is coinfected with HCV. Biological and behavioral mechanisms may increase HIV viral load among coinfected persons. Therefore, we estimated the longitudinal effect of chronic HCV on HIV suppression after ART initiation among women with HIV (WWH). DESIGN: HIV RNA was measured every six months among 441 WWH in the Women's Interagency HIV Study who initiated ART from 2000-2015. METHODS: Log-binomial regression models were used to compare the proportion of study visits with detectable HIV RNA between women with and without chronic HCV...
January 13, 2018: AIDS
https://www.readbyqxmd.com/read/29334502/risk-of-hepatitis-b-virus-reactivation-among-patients-treated-with-ledipasvir-sofosbuvir-for-hepatitis-c-virus-infection
#14
Beshoy T Yanny, Nyan L Latt, Sammy Saab, Steven Han, Gina Choi, Jason Kramer, Amandeep K Sahota
BACKGROUND: Direct acting antiviral (DAA) agents are the standard of care for treatment of hepatitis C virus (HCV)-infected individuals. Hepatitis B virus (HBV) reactivation during HCV treatment has been reported, the incidence and clinical outcome remains unclear. The aim of our study is to examine the risk of HBV reactivation in actively infected or previously exposed patients during or after HCV treatment with DAAs. METHODS: Adults with chronic HCV infection previously exposed or actively infected with HBV and treated with DAAs between December 2015 to 2016 were included...
January 12, 2018: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/29334124/use-of-antiviral-medications-in-drug-reaction-with-eosinophilia-and-systemic-symptoms-dress-a-case-of-infantile-dress
#15
Maggie L Chow, David Kim, Sonia Kamath, David Peng, Minnelly Luu
A 3-month-old girl with Sturge-Weber syndrome presented with a morbilliform rash, eosinophilia, and fulminant liver failure to our tertiary pediatric hospital. She was diagnosed with drug reaction with eosinophilia and systemic symptoms complicated by viremia and evidence of viral hepatitis on liver biopsy. We discuss the role of viral reactivation in drug reaction with eosinophilia and systemic symptoms and the relevance of antiviral therapy in management.
January 15, 2018: Pediatric Dermatology
https://www.readbyqxmd.com/read/29333103/interleukin-35-level-is-elevated-in-patients-with-chronic-hepatitis-b-virus-infection
#16
Sheng-Tao Cheng, Ding Yuan, Yi Liu, Ying Huang, Xiang Chen, Hai-Bo Yu, Lin He, Hui Jiang, Ji-Hua Ren, Juan Chen
Backgrounds: As one of the major public health problems, the hepatitis B virus (HBV) infection would activate the immune system. The outcome of HBV infection was affect significantly by the interactions between HBV and host immune response. Interleukins play important role in anti-viral immunity. Here we investigated the role of interleukin-35 (IL-35) in chronic HBV infection patients. Methods/Results: Serum IL-35 in 72 chronic hepatitis B virus infection patients and 41 healthy control subjects were analyzed by ELISA assay...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29331069/cellular-membrane-trafficking-machineries-utilized-by-the-hepatitis-viruses
#17
REVIEW
Jun Inoue, Masashi Ninomiya, Tooru Shimosegawa, Mark A McNiven
While the life cycles of hepatitis viruses (hepatitis A, B, C, D, and E viruses) have been modestly characterized, recent intensive studies have provided new insights. Because these viruses 'hijack' the membrane trafficking of the host cell machinery during replicative propagation, it is essential to determine and understand these specific cellular pathways. Hepatitis B virus (HBV) and hepatitis C virus (HCV) are well known as a leading cause of liver cirrhosis and hepatocellular carcinoma. While substantial inroads toward treating HCV patients have recently been made, patients with HBV continue to require life-long treatment, which makes a thorough understanding of the HBV life cycle essential...
January 13, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29330989/hepatitis-b-and-hepatitis-c-virus-in-women-with-first-pregnancy
#18
Shandana Mustafa Jadoon, Muhammad Adeel, Shaheen Aslam, Ahsan Rasool
BACKGROUND: Hepatitis B and Hepatitis C are amongst the leading causes of morbidity and mortality in pregnant women throughout the globe. This study is aimed at determining the frequency of these infections among primigravid females and the common factors that make them prone to these infections. METHODS: This cross-sectional study was conducted at Ayub Teaching Hospital, Abbottabad from December 2015 to May 2016. A total of 174 jaundiced primigravida patients were included in the study through non-probability consecutive sampling...
October 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29330866/enteric-viruses-dissemination-in-a-private-reserve-of-natural-heritage
#19
T M Fumian, M Victoria, C B Vieira, J M Fioretti, M S Rocha, T Prado, F R Guimarães, N P da Gama, J M de Oliveira, A C O Mendes, A M C Gaspar, J D O Santos, M Chame, J P G Leite, M P Miagostovich
This study aimed to assess anthropogenic impact of surrounding population in the Private Reserve of Natural Heritage at Pantanal, the world's largest freshwater wetland ecosystem located in the center of South America. Viral etiologic agents of acute gastroenteritis as rotavirus A (RVA), noroviruses (NoV), human adenoviruses (HAdV), klassevirus (KV) and of hepatitis, as hepatitis A virus (HAV), were investigated in different aquatic matrices. Annual collection campaigns were carried out from 2009 to 2012, alternating dry and rainy seasons...
January 13, 2018: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/29330726/ultra-deep-genomic-sequencing-of-hcv-ns5a-resistance-associated-substitutions-in-hcv-hiv-coinfected-patients
#20
Enass A Abdel-Hameed, Susan D Rouster, Ceejay L Boyce, Xiang Zhang, Jacek Biesiada, Mario Medvedovic, Kenneth E Sherman
BACKGROUND AND AIMS: The prevalence of naturally occurring HCV-NS5A resistance-associated substitutions (RAS) to DAA drugs might affect the response to treatment in HCV/HIV coinfected subjects. There are limited data on the frequency of HCV-NS5A naturally occurring drug-RAS at baseline in HCV/HIV coinfected patients when ultra-deep sequencing methodologies are applied. METHODS: HCV-NS5A-RAS were evaluated among 25 subjects in each group. Patients were matched by age, gender, and hepatic fibrosis stage category to control for selection bias...
January 12, 2018: Digestive Diseases and Sciences
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