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https://www.readbyqxmd.com/read/28912718/technical-improvement-and-application-of-hydrodynamic-gene-delivery-in-study-of-liver-diseases
#1
REVIEW
Mei Huang, Rui Sun, Qiang Huang, Zhigang Tian
Development of an safe and efficient in vivo gene delivery method is indispensable for molecular biology research and the progress in the following gene therapy. Over the past few years, hydrodynamic gene delivery (HGD) with naked DNA has drawn increasing interest in both research and potential clinic applications due to its high efficiency and low risk in triggering immune responses and carcinogenesis in comparison to viral vectors. This method, involving intravenous injection (i.v.) of massive DNA in a short duration, gives a transient but high in vivo gene expression especially in the liver of small animals...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28903779/hepatitis-delta-virological-and-clinical-aspects
#2
REVIEW
Luan Felipo Botelho-Souza, Mariana Pinheiro Alves Vasconcelos, Alcione de Oliveira Dos Santos, Juan Miguel Villalobos Salcedo, Deusilene Souza Vieira
There are an estimated 400 million chronic carriers of HBV worldwide; between 15 and 20 million have serological evidence of exposure to HDV. Traditionally, regions with high rates of endemicity are central and northern Africa, the Amazon Basin, eastern Europe and the Mediterranean, the Middle East and parts of Asia. There are two types of HDV/HBV infection which are differentiated by the previous status infection by HBV for the individual. Individuals with acute HBV infection contaminated by HDV is an HDV/HBV co-infection, while individuals with chronic HBV infection contaminated by HDV represent an HDV/HBV super-infection...
September 13, 2017: Virology Journal
https://www.readbyqxmd.com/read/28899424/clade-homogeneity-and-low-rate-of-delta-virus-despite-hyperendemicity-of-hepatitis-b-virus-in-ethiopia
#3
Yeshambel Belyhun, Uwe Gerd Liebert, Melanie Maier
BACKGROUND: Although hepatitis B virus (HBV) is hyperendemic and heterogeneous in its genetic diversity in Ethiopia, little is known about hepatitis D virus (HDV) circulating genotypes and molecular diversity. METHODS: A total of 321 hepatitis B surface antigen (HBsAg) positives (125 HIV co-infected, 102 liver disease patients and 94 blood donors) were screened for anti-HDV antibody. The anti-HDV positive sera were subjected to Real time PCR for HDV-RNA confirmation...
September 12, 2017: Virology Journal
https://www.readbyqxmd.com/read/28891069/use-of-supplemental-anti-hbc-testing-of-donors-showing-non-discriminating-reactive-results-in-multiplex-nucleic-acid-testing
#4
J W Kang, J H Seo, K W Youn, Y I Seo, K Huh, G R Choi, H K Min, D J Oh, H J Jo, J N Kim
BACKGROUND AND OBJECTIVES: The Korean Red Cross began nucleic acid amplification testing (NAT) for HIV and HCV in February 2005, and added HBV NAT beginning in June 2012. The current NAT system utilizes a multiplex assay for simultaneous detection of HBV DNA, HCV RNA and HIV-1 RNA. For samples that are reactive in the multiplex assay, we do specific tests for each virus. However, there have been cases of non-discriminated reactive (NDR) results which appear to be the result of non-specific reactions or cross-contamination, although some cases are considered to arise from the presence of low levels of HBV DNA due to occult hepatitis B infection...
September 10, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28884240/the-serological-markers-of-acute-infection-with-hepatitis-a-b-c-d-e-and-g-viruses-revisited
#5
REVIEW
Robério Amorim de Almeida Pondé
Viral hepatitis is a liver infection caused by one of the six hepatitis viruses: hepatitis A, B, C, D, E, and G virus (HAV to HEV and HGV). These agents differ in their biological, immunological, pathological and epidemiological characteristics. They cause infections that, when symptomatic, lead to clinical manifestations and laboratory findings that are not specific to a particular virus, often making differential diagnosis difficult, especially when no knowledge is available regarding the patient's medical history or the epidemiological background...
September 7, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28884137/hepatitis-b-virus-activates-signal-transducer-and-activator-of-transcription-3-supporting-hepatocyte-survival-and-virus-replication
#6
Marianna Hösel, Maria Quasdorff, Marc Ringelhan, Hamid Kashkar, Svenja Debey-Pascher, Martin F Sprinzl, Jan-Hendrik Bockmann, Silke Arzberger, Dennis Webb, Gesa von Olshausen, Achim Weber, Joachim L Schultze, Hildegard Büning, Mathias Heikenwalder, Ulrike Protzer
BACKGROUND & AIMS: The human hepatitis B virus (HBV) is a major cause of chronic hepatitis and hepatocellular carcinoma, but molecular mechanisms driving liver disease and carcinogenesis are largely unknown. We therefore studied cellular pathways altered by HBV infection. METHODS: We performed gene expression profiling of primary human hepatocytes infected with HBV and proved the results in HBV-replicating cell lines and human liver tissue using real-time polymerase chain reaction and Western blotting...
November 2017: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28879707/analysis-of-hepatitis-c-virus-ns5a-region-in-patients-with-cirrhosis-using-an-ultra-deep-pyrosequencing-method
#7
Fahriye Keskin, Sevgi Ciftci, Filiz Akyuz, Neslihan Abaci, Aris Cakiris, Umit Akyuz, Kadir Demir, Fatih Besisik, Duran Ustek, Sabahattin Kaymakoglu
BACKGROUND: HCV (Hepatitis C Virus) is genetically more diverse than HBV and HIV (Human Immunodeficiency Virus) and exists as quasispecies within infected individuals. This is due to the lack of efficient proofreading of the viral RNA-dependent RNA polymerase. Consequently, quasispecies emerge depending on the mutation rate of the viral polymerase, which may display a high level of genetic variability in a population. In infected individuals, HCV replicates and circulates as quasispecies composed of a complex mixture of different but closely related genomes that undergoes continuous change due to competitive selection and cooperation between arising mutants...
September 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28870671/relationship-between-serum-hbv-rna-levels-and-intrahepatic-viral-as-well-as-histologic-activity-markers-in-entecavir-treated-patients
#8
Jing Wang, Yiqi Yu, Guojun Li, Chuan Shen, Zhefeng Meng, Jianming Zheng, Yanhong Jia, Shaolong Chen, Xiao Zhang, MengQi Zhu, Jiangjiang Zheng, Zhangzhang Song, Jing Wu, Lingyun Shao, Peiyu Qian, Xiaona Mao, Xuanyi Wang, Yuxian Huang, Caiyan Zhao, Jiming Zhang, Chao Qiu, Wenhong Zhang
BACKGROUND: In diagnostics, serum hepatitis B virus (HBV)-RNA levels are valuable when the HBV-DNA load in circulation is effectively suppressed by nucleos(t)ide analogue (NUC) therapy. This study aimed to determine the intrahepatic viral replication activity reflected in serum HBV-RNA and whether HBV-RNA contributes to liver histological changes in NUC-treated patients. METHODS: A cross-sectional set of serum and liver biopsy samples was obtained from entecavir-treated patients with undetectable levels of serum HBV-DNA...
September 1, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28867077/characteristics-of-patients-with-hepatitis-b-virus-and-hepatitis-c-virus-dual-infection-in-a-western-european-country-comparison-with-monoinfected-patients
#9
Astrid Marot, Aïmen Belaid, Hans Orlent, Thomas Sersté, Peter Michielsen, Isabelle Colle, Wim Laleman, Chantal de Galocsy, Hendrik Reynaert, François D'Heygere, Christophe Moreno, Christopher Doerig, Jean Henrion, Pierre Deltenre
The epidemiology of hepatitis B virus (HBV) and hepatitis C virus (HCV) infections is continuously evolving. Updated data on dual HBV and HCV infection are still needed. AIMS: To assess the main characteristics of patients with HBV and HCV dual infection, to compare these with those of patients infected with either HBV or HCV and, among patients with dual infection, to assess fibrosis according to HCV replication. METHODS: Data of 23 patients with dual infection were compared to data from 92 age and sex-matched HBV or HCV monoinfected patients...
August 31, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28866696/multiplex-real-time-rt-pcr-assay-for-transfusion-transmitted-viruses-in-sero-negative-allogeneic-blood-donors-an-experience-from-southern-pakistan
#10
S Sultan, M I Nasir, S Rafiq, M A Baig, S Akbani, S M Irfan
BACKGROUND: Blood transfusion safety commences with healthy donor recruitment. The threat of transfusion transmitted infections is greatly minimized by serological tools but not entirely eliminated. Recently, nucleic-acid testing for blood donor screening has virtually eliminated this jeopardy. METHODS: This prospective study was conducted from February 2015 to February 2016. Samples from seronegative donors were run on multiplex assay (Cobas, S-201 system platform, Roche) in a batch of six [MP-NAT]...
August 2017: Malaysian Journal of Pathology
https://www.readbyqxmd.com/read/28852072/synergistic-impact-of-mutations-in-hepatitis-b-virus-genome-contribute-to-its-occult-phenotype-in-chronic-hepatitis-c-virus-carriers
#11
Rajiv Kumar Mondal, Mousumi Khatun, Priyanka Banerjee, Alip Ghosh, Sumanta Sarkar, Amal Santra, Kausik Das, Abhijit Chowdhury, Soma Banerjee, Simanti Datta
We characterized occult HBV (OHBV) from hepatitis B surface antigen (HBsAg)-negative chronic HCV carriers of Eastern India to explore the impact of genomic variability of HBV in causing undetectability of HBsAg and low viremia that define the occult phenomenon. Screening of sera samples revealed the presence of OHBV in 17.8% of HCV-infected patients. Determination of full-length OHBV sequences and comparison with that from HBsAg-positive carriers led to the detection of distinct substitutions/mutations in PreS2, S, P and X ORFs and in X-promoter and Enhancer-II of OHBV...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28839466/the-grna-mirna-grna-ternary-cassette-combining-crispr-cas9-with-rnai-approach-strongly-inhibits-hepatitis-b-virus-replication
#12
Jie Wang, Ran Chen, Ruiyang Zhang, Shanlong Ding, Tianying Zhang, Quan Yuan, Guiwen Guan, Xiangmei Chen, Ting Zhang, Hui Zhuang, Frederick Nunes, Timothy Block, Shuang Liu, Zhongping Duan, Ningshao Xia, Zhongwei Xu, Fengmin Lu
The CRISPR/Cas9 system is a novel genome editing technology which has been successfully used to inhibit HBV replication. Here, we described a novel gRNA-microRNA (miRNA)-gRNA ternary cassette driven by a single U6 promoter. With an anti-HBV pri-miR31 mimic integrated between two HBV-specific gRNAs, both gRNAs could be separated from the long transcript of gRNA-miR-HBV-gRNA ternary cassette through Drosha/DGCR8 processing. The results showed that the gRNA-miR-HBV-gRNA ternary cassette could efficiently express two gRNAs and miR-HBV...
2017: Theranostics
https://www.readbyqxmd.com/read/28834623/hepatitis-b-virus-hepatitis-d-virus-mother-to-child-co-transmission-a-retrospective-study-in-a-developed-country
#13
Pierre Sellier, Sarah Maylin, Ségolène Brichler, Béatrice Berçot, Amanda Lopes, Dorothée Chopin, Manuela Pogliaghi, Anne-Lise Munier, Véronique Delcey, Guy Simoneau, John Evans, Emmanuel Gordien, François Simon, Jean-François Bergmann
BACKGROUND & AIMS: Hepatitis B Virus (HBV) DNA during chronic infection can reach levels at which mother-to-child (MTC) transmission frequently occurs despite passive-active immunization of newborns. Hepatitis D Virus (HDV) RNA can reach high levels, we assessed HBV/HDV MTC co-transmission. METHODS: Monocentric retrospective study (registered in ClinicalTrials. gov (NCT02044055)), after informed consent in HBV/HDV co-infected women pregnant between 01/01/2004 and 01/01/2015 in Paris, France...
August 23, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28830339/proteomic-and-transcriptomic-studies-of-hbv-associated-liver-fibrosis-of-an-aav-hbv-infected-mouse-model
#14
Fangming Kan, Lei Ye, Tao Yan, Jiaqi Cao, Jianhua Zheng, Wuping Li
BACKGROUND: Human hepatitis B virus (HBV) infection is an important public health issue in the Asia-Pacific region and is associated with chronic hepatitis, liver fibrosis, cirrhosis and even liver cancer. However, the underlying mechanisms of HBV-associated liver fibrosis remain incompletely understood. RESULTS: In the present study, proteomic and transcriptomic approaches as well as biological network analyses were performed to investigate the differentially expressed molecular signature and key regulatory networks that were associated with HBV-mediated liver fibrosis...
August 22, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28828170/hcv-infected-renal-transplant-recipients-our-experience-before-the-availability-of-new-antiviral-drugs
#15
A R Fernandes, I J Laranjinha, R Birne, P Matias, C Jorge, T Adragão, M Bruges, A Weigert, D Machado
BACKGROUND: Natural history of HCV-infected renal transplant recipients is about to change with the invention of new drugs available for the treatment of HCV. OBJECTIVE: To analyze the evolution of renal transplant recipients infected with HCV in 30 years of activity of a Renal Transplantation Unit. METHODS: We studied 1334 patients who underwent renal transplantation between 1985 and 2015. RESULTS: 189 (14.2%) of these 1334 were found HCV seropositive...
2017: International Journal of Organ Transplantation Medicine
https://www.readbyqxmd.com/read/28827084/inhibitory-effects-of-metachromin-a-on-hepatitis-b-virus-production-via-impairment-of-the-viral-promoter-activity
#16
Atsuya Yamashita, Mayumi Tamaki, Hirotake Kasai, Tomohisa Tanaka, Teruhime Otoguro, Akihide Ryo, Shinya Maekawa, Nobuyuki Enomoto, Nicole J de Voogd, Junichi Tanaka, Kohji Moriishi
The currently available antiviral agents for chronic infection with hepatitis B virus (HBV) are pegylated interferon-α and nucleoside/nucleotide analogues, although it has been difficult to completely eliminate covalently closed circular DNA (cccDNA) from patients. To identify an antiviral compound targeting HBV core promoter, 15 terpenes originating from marine organisms were screened using a cell line expressing firefly luciferase under the control of the HBV core promoter. Metachromin A, which is a merosesquiterpene isolated from the marine sponge Dactylospongia metachromia, inhibited the viral promoter activity at the highest level among the tested compounds, and suppressed HBV production with an EC50 value of 0...
August 4, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28822827/host-genes-regulate-transcription-of-sperm-introduced-hepatitis-b-virus-genes-in-embryo
#17
Ying Zhong, Dong-Ling Liu, Mohamed Morsi M Ahmed, Peng-Hao Li, Xiao-Ling Zhou, Qing-Dong Xie, Xiao-Qing Xu, Ting-Ting Han, Zhi-Wei Hou, Chen-Yao Zhong, Ji-Hua Huang, Fei Zeng, Tian-Hua Huang
Hepatitis B virus (HBV) can invade the male germline, and sperm-introduced HBV genes could be transcribed in embryo. This study was to explore whether viral gene transcription is regulated by host genes. Embryos were produced by in vitro fertilization of hamster oocytes with human sperm containing the HBV genome. Total RNA extracted from test and control embryos were subjected to SMART-PCR, SSH, microarray hybridization, sequencing and BLAST analysis. Twenty-nine sequences showing significant identity to five human gene families were identified, with CSH2, EIF4G2, PCBD2, PSG4 and TTN selected to represent target genes...
August 16, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28810637/binding-of-line-1-rna-to-psf-transcriptionally-promotes-gage6-and-regulates-cell-proliferation-and-tumor-formation-in-vitro
#18
Jiao Lv, Ziyi Zhao
Hepatocellular carcinoma (HCC) has one of the highest mortality rates among numerous types of cancer. It has been demonstrated that in hepatitis B (HBV)-associated HCC, the expression of chimeric fusion transcript HBx-long interspersed nuclear element-1 (LINE-1) initiated by HBV integration is correlated with hepatocarcinogenesis and poor patient survival rates. Furthermore, increased rates of LINE-1 hypomethylation have been detected in HCC tissues compared with adjacent tissues. This suggests that individual LINE-1 RNA (L1 RNA) serves an important role in the processes of hepatocarcinogenesis...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28802063/hepatitis-b-virus-pregenomic-rna-in-hepatocellular-carcinoma-a-nosological-and-prognostic-determinant
#19
Boris Halgand, Christophe Desterke, Lise Rivière, Guillaume Fallot, Mylène Sebagh, Julien Calderaro, Paulette Bioulac-Sage, Christine Neuveut, Marie-Annick Buendia, Didier Samuel, Cyrille Féray
Hepatitis B virus (HBV) is a major cause of hepatocellular carcinoma (HCC). However, very little is known about the replication of HBV in HCC tissues. PATIENTS AND METHODS: We analysed viral and cellular parameters in HCC (T) and non-tumor liver (NT) samples from 99 HBsAg-positive, virologically suppressed patients treated by tumour resection or liver transplantation. We examined total HBV DNA and RNA as well as covalently closed circular DNA (cccDNA) and pregenomic RNA (pgRNA), which are considered as markers of active HBV replication...
August 12, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28782578/performance-of-rapid-diagnostic-tests-for-detection-of-hepatitis-b-and-c-markers-in-hiv-infected-patients
#20
Jakeline Ribeiro Barbosa, Jeová Keny Baima Colares, Geane Lopes Flores, Vanessa Faria Cortes, Juliana Custódio Miguel, Moyra Machado Portilho, Vanessa Alves Marques, Denise Vigo Potsch, Carlos Eduardo Brandão-Mello, Marcia Amendola-Pires, José Henrique Pilotto, Danielle Malta Lima, Elisabeth Lampe, Livia Melo Villar
There is little information describing the influence of HIV infection upon the performance of rapid diagnostic tests (RDTs) for hepatitis B and C virus diagnosis. This study aims to evaluate the performance of RDTs for HBsAg and anti-HCV detection among HIV-infected individuals. A total of 362 HIV infected individuals were recruited from clinics between January 2013 to November 2014 in the southeast and northeast of Brazil. HBsAg and anti-HCV were detected using commercial EIAs and four RDTs: HBV (Vikia HBsAg(®) and Wama Imuno-Rapido HBV(®)) and HCV (Bioeasy Teste Rápido HCV(®) and Wama Imuno-Rapido HCV(®))...
October 2017: Journal of Virological Methods
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