Characterization of the dynamics of hepatitis B virus resistance to adefovir by ultra‐deep pyrosequencing

Christophe Rodriguez, Stéphane Chevaliez, Paul Bensadoun, Jean‐Michel Pawlotsky – 15 March 2013 – Hepatitis B virus (HBV) resistance to nucleoside/nucleotide analogs is frequent. Ultra‐deep pyrosequencing (UDPS) is a powerful new tool that can detect minor viral variants and characterize complex quasispecies mixtures. We used UDPS to analyze the dynamics of adefovir‐resistant HBV variants in patients with chronic HBV infection in whom adefovir resistance occurred during treatment. Amino acid substitutions known to confer resistance to adefovir were detected at baseline in most patients.

Incidence and prevalence of hepatitis C in prisons and other closed settings: Results of a systematic review and meta‐analysis

Sarah Larney, Hannah Kopinski, Curt G. Beckwith, Nickolas D. Zaller, Don Des Jarlais, Holly Hagan, Josiah D. Rich, Brenda J. Bergh, Louisa Degenhardt – 15 March 2013 – People detained in prisons and other closed settings are at elevated risk of infection with hepatitis C virus (HCV). We undertook a systematic review and meta‐analysis with the aim of determining the rate of incident HCV infection and the prevalence of anti‐HCV among detainees in closed settings. We systematically searched databases of peer‐reviewed literature and widely distributed a call for unpublished data.

Resistance analysis of hepatitis C virus genotype 1 prior treatment null responders receiving daclatasvir and asunaprevir

Fiona McPhee, Dennis Hernandez, Fei Yu, Joseph Ueland, Aaron Monikowski, Arlene Carifa, Paul Falk, Chunfu Wang, Robert Fridell, Timothy Eley, Nannan Zhou, David Gardiner – 15 March 2013 – In a sentinel cohort, hepatitis C virus (HCV) patients (primarily genotype [GT] 1a) were treated with daclatasvir (NS5A inhibitor) and asunaprevir (NS3 protease inhibitor). Preexistence, emergence, and persistence of resistance variants in patients who failed this treatment are described.

Platelet‐derived growth factor‐D and Rho GTPases regulate recruitment of cancer‐associated fibroblasts in cholangiocarcinoma

Massimiliano Cadamuro, Giorgia Nardo, Stefano Indraccolo, Luigi Dall'Olmo, Luisa Sambado, Lidia Moserle, Irene Franceschet, Michele Colledan, Marco Massani, Tommaso Stecca, Nicolò Bassi, Stuart Morton, Carlo Spirli, Romina Fiorotto, Luca Fabris, Mario Strazzabosco – 15 March 2013 – Cholangiocarcinoma (CCA) is characterized by an abundant stromal reaction. Cancer‐associated fibroblasts (CAFs) are pivotal in tumor growth and invasiveness and represent a potential therapeutic target.

High prevalence of vitamin A deficiency and vitamin D deficiency in patients evaluated for liver transplantation

Mukund Venu, Eric Martin, Kia Saeian, Samer Gawrieh – 14 March 2013 – Deficiencies in vitamins A, D, and E have been linked to night blindness, bone health, and post–liver transplant reperfusion injury. The aim of this study was to determine the prevalence and predictive factors of fat‐soluble vitamin deficiencies in liver transplant candidates. We reviewed the medical records of liver transplant candidates at our center from January 2008 to September 2011.

Management and long‐term consequences of portal vein thrombosis after liver transplantation in children

M. Kyle Jensen, Kathleen M. Campbell, Maria H. Alonso, Jaimie D. Nathan, Frederick C. Ryckman, Greg M. Tiao – 11 March 2013 – Portal vein thrombosis (PVT) occurs in ≤12% of pediatric recipients of liver transplantation (LT). Known complications of PVT include portal hypertension, allograft loss, and mortality. The management of PVT is varied. A single‐center, case‐control study of pediatric LT recipients with portal vein (PV) changes after LT was performed.

Genome‐wide screening reveals that miR‐195 targets the TNF‐α/NF‐κB pathway by down‐regulating IκB kinase alpha and TAB3 in hepatocellular carcinoma

Jie Ding, Shenglin Huang, Ying Wang, Qi Tian, Ruopeng Zha, Haibing Shi, Qifeng Wang, Chao Ge, Taoyang Chen, Yingjun Zhao, Linhui Liang, Jinjun Li, Xianghuo He – 11 March 2013 – Nuclear factor kappa B (NF‐κB) is an important factor linking inflammation and tumorigenesis. In this study we experimentally demonstrated through a high‐throughput luciferase reporter screen that NF‐κB signaling can be directly targeted by nearly 29 microRNAs (miRNAs). Many of these miRNAs can directly target NF‐κB signaling nodes by binding to their 3′ untranslated region (UTR).

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