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https://www.readbyqxmd.com/read/27909336/c-terminal-truncated-hbv-x-promotes-hepato-oncogenesis-through-inhibition-of-tumor-suppressive-%C3%AE-catenin-bambi-signaling
#1
Seok Lee, Mi-Jin Lee, Jun Zhang, Goung-Ran Yu, Dae-Ghon Kim
C-terminal-truncated hepatitis B virus (HBV) X (HBx) (ctHBX) is frequently detected in hepatocellular carcinoma (HCC) through HBV integration into the host genome. However, the molecular mechanisms underlying ctHBx-associated oncogenic signaling have not yet been clarified. To elucidate the biological role of ctHBx in hepato-oncogenesis, we functionally analyzed ctHBx-mediated regulation of the activin membrane-bound inhibitor bone morphogenetic protein and activin membrane-bound inhibitor (BAMBI) through transforming growth factor-β (TGF-β) or β-catenin (CTNNB1) in HCC cells and in an animal model, and we compared its role to that of the full-length HBx protein...
December 2, 2016: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/27908829/exploring-the-binding-mechanism-of-heteroaryldihydropyrimidines-and-hepatitis-b-virus-capsid-combined-3d-qsar-and-molecular-dynamics
#2
Jing Tu, Jiao Jiao Li, Zhi Jie Shan, Hong Lin Zhai
The non-nucleoside drugs have been developed to treat HBV infection owing to their increased efficacy and lesser side effects, in which heteroaryldihydropyrimidines (HAPs) have been identified as effective inhibitors of HBV capsid. In this paper, the binding mechanism of HAPs targeting on HBV capsid protein was explored through three-dimensional quantitative structure-activity relationship, molecular dynamics and binding free energy decompositions. The obtained models of comparative molecular field analysis and comparative molecular similarity indices analysis enable the sufficient interpretation of structure-activity relationship of HAPs-HBV...
November 28, 2016: Antiviral Research
https://www.readbyqxmd.com/read/27908760/affibody-displaying-bio-nanocapsules-effective-in-egfr-typical-biomarker-expressed-in-various-cancer-cells
#3
Yuya Nishimura, Ryosuke Ezawa, Jun Ishii, Chiaki Ogino, Akihiko Kondo
The expression of epidermal growth factor receptor (EGFR) across a wide range of tumor cells has attracted attention for use as a tumor marker in drug delivery systems. Therefore, binding molecules with the ability to target EGFR have been developed. Among them, we focused on affibodies that are binding proteins derived from staphylococcal protein A. By displaying affibody (ZEGFR) binding to EGFR on the surface of a bio-nanocapsule (BNC) derived from a hepatitis B virus (HBV), we developed an altered BNC (ZEGFR-BNC) with a high specificity to EGFR-expressing cells...
November 15, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27906011/prevalence-of-hiv-and-hepatitis-b-coinfection-in-ghana-a-systematic-review-and-meta-analysis
#4
REVIEW
Akosua Adom Agyeman, Richard Ofori-Asenso
BACKGROUND: Human immunodeficiency virus (HIV) and hepatitis B virus (HBV) coinfection has been associated with higher morbidity and mortality and may impact significantly on healthcare resource utilization. However, in Ghana, accurate estimates of the prevalence of HIV/HBV coinfection needed to inform policy decisions and the design of public health interventions are currently lacking. In this study, our aim was to determine the HIV/HBV coinfection prevalence rate in Ghana. METHODS: Primary studies reporting prevalence of HIV/HBV coinfection in Ghana were retrieved through searches conducted in PubMed, science direct, Google scholar and Africa journals online (AJOL) databases...
May 17, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27906008/sero-prevalence-of-hbv-and-associated-risk-factors-among-hiv-positive-individuals-attending-art-clinic-at-mekelle-hospital-tigray-northern-ethiopia
#5
Letebrhan Weldemhret, Tsehaye Asmelash, Rashmi Belodu, Dawit Gebreegziabiher
BACKGROUND: Because of the shared mean of transmission, hepatitis B virus (HBV) is one of an important cause of co-morbidity and mortality in peoples living with HIV/AIDS. Hence, the aim of this study was to determine the sero-prevalence of HBV infection and associated risk factors in HIV/AIDS positive individuals attending ART clinic at Mekelle hospital, Mekelle, Northern Ethiopia. METHODS: A cross sectional study was conducted from August to October 2014 in HIV/AIDS positive adult individuals...
February 4, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27905089/novel-paradigm-for-immunotherapy-of-ovarian-cancer-by-engaging-prophylactic-immunity-against-hepatitis-b-virus
#6
Marek Malecki, Emily Putzer, Caroline Quach, Chaitanya Dodivenaka, Xenia Tombokan
BACKGROUND: Only eight women out of one hundred diagnosed with ovarian epithelial cancers, which progressed to the clinical stage IV, survive 10 years. First line therapies: surgery, chemotherapy, and radiation therapy inflict very serious iatrogenic consequences. Passive immunotherapy of ovarian cancers offers only low efficacy. Prophylactic and therapeutic vaccines for ovarian cancers are not available. Interestingly, prophylactic vaccines for Hepatitis B Viruses (HBV) are very effective...
December 2016: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/27902514/prevalence-and-epidemiology-of-hepatitis-d-among-patients-with-chronic-hepatitis-b-virus-infection-a-report-from-northern-spain
#7
Carlos Ordieres, Carmen A Navascués, María L González-Diéguez, Mercedes Rodríguez, Valle Cadahía, María Varela, Luis Rodrigo, Manuel Rodríguez
BACKGROUND: The incidence of hepatitis delta virus (HDV) infection has decreased during the last decades. However, an increasing trend has been reported recently. PATIENTS AND METHODS: We carried out a case-control study to analyze changes in its prevalence in 1215 chronic hepatitis B virus (HBV) patients, diagnosed consecutively in a tertiary center, between 1983 and 2012. According to the year of diagnosis, patients were distributed into two groups: A [1983-1997 (n=786)] and B [1998-2012 (n=429)]...
November 29, 2016: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/27902472/molecular-mechanism-of-hepatitis-b-virus-hbv-on-suppression-of-raf-kinase-inhibitor-protein-rkip-expression
#8
Xiao-Ke Cheng, Guo-Zheng Yu, Xiao-Dong Li, Xue-Qun Ren
Raf kinase inhibitor protein (RKIP) has been shown to be a suppressor of the mitogen-activated protein kinase pathway and is reported to be involved in human malignancy. However, the molecular mechanism of hepatitis B virus (HBV) in regulating RKIP expression is not yet clarified. In this study, we compared RKIP expression in 107 pairs of matched liver cancer and adjacent non-cancerous liver tissues. Among seven HBV-encoded proteins, we found HBV X (HBX) protein could significantly inhibit the expression level of RKIP, indicating that HBV could suppress RKIP expression through regulating HBX...
November 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27902444/oncolytic-reovirus-as-a-combined-antiviral-and-anti-tumour-agent-for-the-treatment-of-liver-cancer
#9
Adel Samson, Matthew J Bentham, Karen Scott, Gerard Nuovo, Abigail Bloy, Elizabeth Appleton, Robert A Adair, Rajiv Dave, Adam Peckham-Cooper, Giles Toogood, Seishi Nagamori, Matthew Coffey, Richard Vile, Kevin Harrington, Peter Selby, Fiona Errington-Mais, Alan Melcher, Stephen Griffin
OBJECTIVE: Oncolytic viruses (OVs) represent promising, proinflammatory cancer treatments. Here, we explored whether OV-induced innate immune responses could simultaneously inhibit HCV while suppressing hepatocellular carcinoma (HCC). Furthermore, we extended this exemplar to other models of virus-associated cancer. DESIGN AND RESULTS: Clinical grade oncolytic orthoreovirus (Reo) elicited innate immune activation within primary human liver tissue in the absence of cytotoxicity and independently of viral genome replication...
November 15, 2016: Gut
https://www.readbyqxmd.com/read/27902332/inhibition-of-hepatitis-b-virus-replication-by-activation-of-the-cgas-sting-pathway
#10
Jing He, Ruidong Hao, Dan Liu, Xing Liu, Shaoshuai Wu, Shuting Guo, Yuan Wang, Deyin Guo
Cyclic GMP-AMP (cGAMP) synthase (cGAS) senses cytosolic DNA and catalyzes synthesis of the second messenger cGAMP, which activates the downstream signaling adaptor protein STING, leading to the expression of type I interferons. Hepatitis B virus (HBV) is a small DNA virus, and the cGAS-STING pathway may inhibit HBV RNA synthesis and viral assembly in cell culture, but the exact roles of cGAS pathway in the restriction of HBV replication in infection systems remain to be elucidated. In this study, we showed that the replication of HBV was significantly inhibited both in cell culture and in vivo in a mouse model when the cGAS-STING pathway was activated by dsDNA or cGAMP...
October 31, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27902331/the-plasma-virome-of-febrile-adult-kenyans-shows-frequent-parvovirus-b19-infections-and-a-novel-arbovirus-kadipiro-virus
#11
Carolyne Ngoi, Juliana Siqueira, Linlin Li, Xutao Deng, Peter Mugo, Susan Graham, Matt Price, Eduard Sanders, Eric Delwart
Viral nucleic acids present in the plasma of 498 Kenyan adults with unexplained fever were characterized by metagenomics analysis of 51 sample pools. The highest to lowest fraction of plasma pools was positive for parvovirus B19 (75%), pegivirus C (GBV-C) (67%), alpha anellovirus (59%), gamma anellovirus (55%), beta anellovirus (41%), Dengue virus genotype 2 (DENV-2) (16%), HIV-1 (6%), HHV-6 (6%), HBV (4%), rotavirus (4%), norovirus (4%), rhinovirus C (2%), Merkel cell polyomavirus (MCPyV)(2%) and Kadipiro virus (2%)...
October 24, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27900593/factors-associated-with-hepatitis-b-knowledge-among-vietnamese-americans-a-population-based-survey
#12
Janet N Chu, Phuoc V Le, Chris J Kennedy, Stephen J McPhee, Ching Wong, Susan L Stewart, Tung T Nguyen
Vietnamese Americans have high rates of hepatitis B virus (HBV) infection but low rates of knowledge and screening. A population-based survey conducted in 2011 of Vietnamese Americans in two geographic areas (n = 1666) was analyzed. The outcome variables were having heard of HBV and a score summarizing knowledge of HBV transmission. Most respondents (86.0%) had heard of HBV. Correct knowledge of transmission ranged from 59.5% for sex, 68.1% for sharing toothbrushes, 78.6% for during birth, and 85.0% for sharing needles...
November 30, 2016: Journal of Immigrant and Minority Health
https://www.readbyqxmd.com/read/27900029/thymosin-%C3%AE-1-therapy-subsequent-to-radical-hepatectomy-in-patients-with-hepatitis-b-virus-associated-hepatocellular-carcinoma-a-retrospective-controlled-study
#13
Yong-Rong Liang, Zhe Guo, Jing-Hang Jiang, Bang-De Xiang, Le-Qun Li
The clinical efficacy of thymosin α1 (Tα1) therapy in patients with hepatocellular carcinoma (HCC) subsequent to radical hepatectomy is unclear. In the present study, the impact of Tα1 therapy on outcomes in HCC patients after radical hepatectomy was retrospectively evaluated. Medical records were retrospectively reviewed for 146 patients with hepatitis B virus (HBV)-associated HCC who were treated by radical hepatectomy and subsequently with Tα1 therapy, as well as for 412 control patients with HBV-associated HCC treated by radical hepatectomy...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27899699/a-smartphone-based-genotyping-method-for-hepatitis-b-virus-at-point-of-care-settings
#14
Huiqin Jiang, Di Wu, Liuwei Song, Quan Yuan, Shengxiang Ge, Xiaoping Min, Ningshao Xia, Shizhi Qian, Xianbo Qiu
We reported a rapid, convenient, and easy-to-use genotyping method for hepatitis B virus (HBV) based on the smartphone at point-of-care (POC) settings. To perform HBV genotyping especially for genotypes A, B, C, and D, a smartphone is used to image and analyze a one-step immunoassay lateral flow strip functionalized with genotype-specific monoclonal antibodies (mAbs) on multiple capture lines. A light-emitting diode (LED) positioned on the top of the lateral flow strip is used to shine the multiple capture lines for excitation...
November 29, 2016: Journal of Laboratory Automation
https://www.readbyqxmd.com/read/27899297/validation-of-the-afp-model-as-a-predictor-of-hcc-recurrence-in-patients-with-viral-hepatitis-related-cirrhosis-who-had-received-a-liver-transplant-for-hcc
#15
Andrea Notarpaolo, Richard Layèse, Paolo Magistri, Maria Gambato, Michele Colledan, Giulia Magini, Lucia Miglioresi, Alessandro Vitale, Giovanni Vennarecci, Cecilia D Ambrosio, Patrizia Burra, Fabrizio Di Benedetto, Stefano Fagiuoli, Marco Colasanti, Giuseppe Maria Ettorre, Arnoldo Andreoli, Umberto Cillo, Alexis Laurent, Sandrine Katsahian, Etienne Audureau, Françoise Roudot-Thoraval, Christophe Duvoux
BACKGROUND AND AIMS: The AFP model was shown superior to Milan criteria for prediction of HCC recurrence after liver transplantation in a French population. Our aim was to test the AFP model in a non French, post-hepatitic cirrhosis-based population of HCC candidates. METHODS: 574 patients transplanted for HCC in 4 Italian centres were studied. AFP score was assessed at last evaluation before LT. Probabilities of recurrence and survival were estimated by the log rank test or competing risk analysis and compared according to the AFP model...
November 26, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/27899262/reactivation-of-hepatitis-b-virus-in-cancer-patients-treated-with-chemotherapy-for-solid-tumors-is-the-prophylaxis-really-required
#16
Alessandro Federico, Giuseppina Brancaccio, Marcello Dallio, Patrizia Iodice, Alessio Fabozzi, Salvatore Del Prete, Fortunato Ciardiello, Carmela Loguercio, Giovanni Battista Gaeta
BACKGROUND: Reactivation of hepatitis B virus during cancer chemotherapy for non-hematological tumors is not fully clear. AIM: To evaluate the risk of hepatitis B virus reactivation in carriers of hepatitis B virus cancer patients treated with chemotherapy for solid tumors. METHODS: Two hundred sixty-seven patients with solid tumors were consecutively enrolled: 13 (4.8%) were hepatitis B s-antigen positive, of whom 6 were documented inactive carriers and 7 had chronic liver disease...
November 16, 2016: Digestive and Liver Disease
https://www.readbyqxmd.com/read/27898721/hepatitis-b-virus-infections-and-associated-factors-among-pregnant-women-attending-antenatal-care-clinic-at-deder-hospital-eastern-ethiopia
#17
Abdi Umare, Berhanu Seyoum, Tesfaye Gobena, Tamirat Haile Mariyam
BACKGROUND: Hepatitis B virus (HBV) infection is a serious public health problem worldwide. Reports have shown that 68,600 people die of HBV infection and more than 300,000 deaths due to liver cancer secondary to hepatitis B every year globally. Women who are infected with HBV can vertically transmit the infection to their infants. This study aims to determine the prevalence of HBV infection and associated factors among pregnant women. METHODS AND FINDINGS: A hospital-based cross-sectional study was conducted among pregnant women who attended antenatal care clinic (ANC) for routine pregnancy check-up between 18 March 2015 and 15 May 2015...
2016: PloS One
https://www.readbyqxmd.com/read/27896895/five-year-efficacy-and-safety-of-tenofovir-based-salvage-therapy-for-patients-with-chronic-hepatitis-b-who-previously-failed-lam-adv-therapy
#18
Lucy Lim, Alexander Thompson, Scott Patterson, Jacob George, Simone Strasser, Alice Lee, William Sievert, Amanda Nicoll, Paul Desmond, Stuart Roberts, Kaye Marion, Scott Bowden, Stephen Locarnini, Peter Angus
BACKGROUND: Multidrug resistant HBV continues to be an important clinical problem. The TDF-109 study demonstrated that TDF±LAM is effective salvage therapy through 96 weeks for LAM resistant patients who previously failed ADV add-on or switch therapy. We evaluated the 5 year efficacy and safety outcomes in patients receiving long-term TDF±LAM in the TDF-109 study. METHODS: 59 patients completed the first phase of the TDF-109 study and 54/59 were rolled over into a long-term prospective open-label study of TDF±LAM 300mg daily...
November 29, 2016: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/27896875/disseminated-cobblestone-like-skin-lumps-in-a-newborn
#19
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/27895431/occult-hepatitis-b-virus-infection-is-not-associated-with-disease-progression-of-chronic-hepatitis-c-virus-infection
#20
Junhyeon Cho, Sang Soo Lee, Yun Suk Choi, Yejoo Jeon, Jung Wha Chung, Joo Yeong Baeg, Won Keun Si, Eun Sun Jang, Jin-Wook Kim, Sook-Hyang Jeong
AIM: To clarify the prevalence of occult hepatitis B virus (HBV) infection (OBI) and the association between OBI and liver disease progression, defined as development of liver cirrhosis or hepatocellular carcinoma (HCC), worsening of Child-Pugh class, or mortality in cases of chronic hepatitis C virus (HCV) infection. METHODS: This prospective cohort study enrolled 174 patients with chronic HCV infection (chronic hepatitis, n = 83; cirrhosis, n = 47; HCC, n = 44), and evaluated disease progression during a mean follow-up of 38...
November 14, 2016: World Journal of Gastroenterology: WJG
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