A Human monoclonal antibody targeting scavenger receptor class B type I precludes hepatitis C virus infection and viral spread in vitro and in vivo

Philip Meuleman, Maria Teresa Catanese, Lieven Verhoye, Isabelle Desombere, Ali Farhoudi, Christopher T. Jones, Timothy Sheahan, Katarzyna Grzyb, Riccardo Cortese, Charles M. Rice, Geert Leroux‐Roels, Alfredo Nicosia – 27 September 2011 – Endstage liver disease caused by chronic hepatitis C virus (HCV) infection is the leading indication for liver transplantation in the Western world. However, immediate reinfection of the grafted donor liver by circulating virus is inevitable and liver disease progresses much faster than the original disease.

Serum ferritin is an independent predictor of histologic severity and advanced fibrosis in patients with nonalcoholic fatty liver disease

Kris V. Kowdley, Patricia Belt, Laura A. Wilson, Matthew M. Yeh, Brent A. Neuschwander‐Tetri, Naga Chalasani, Arun J. Sanyal, James E. Nelson, for the NASH Clinical Research Network. – 27 September 2011 – Serum ferritin (SF) levels are commonly elevated in patients with nonalcoholic fatty liver disease (NAFLD) because of systemic inflammation, increased iron stores, or both. The aim of this study was to examine the relationship between elevated SF and NAFLD severity.

Successful isolation of liver progenitor cells by aldehyde dehydrogenase activity in naïve mice

Laurent Dollé, Jan Best, Christophe Empsen, Jie Mei, Elke Van Rossen, Philip Roelandt, Sarah Snykers, Mustapha Najimi, Feras Al Battah, Neil D. Theise, Konrad Streetz, Etienne Sokal, Isabelle A. Leclercq, Catherine Verfaillie, Vera Rogiers, Albert Geerts, Leo A. van Grunsven – 27 September 2011 – The role of progenitor cells in liver repair and fibrosis has been extensively described, but their purification remains a challenge, hampering their characterization and use in regenerative medicine.

Induction of heme oxygenase 1 prevents progression of liver fibrosis in Mdr2 knockout mice

Roja Barikbin, Daniel Neureiter, Jan Wirth, Annette Erhardt, Dorothee Schwinge, Johannes Kluwe, Christoph Schramm, Gisa Tiegs, Gabriele Sass – 27 September 2011 – Induction or overexpression of the heme‐degrading enzyme, heme oxygenase 1 (HO‐1), has been shown to protect mice from liver damage induced by acute inflammation. We have investigated the effects of HO‐1 induction in a mouse model of chronic liver inflammation and fibrogenesis with progression to hepatocellular carcinoma (HCC) (Mdr2ko; FVB.129P2‐Abcb4tm1Bor).

Mature hepatocytes exhibit unexpected plasticity by direct dedifferentiation into liver progenitor cells in culture

Yixin Chen, Philip P. Wong, Lucas Sjeklocha, Clifford J. Steer, M. Behnan Sahin – 27 September 2011 – Although there have been numerous reports describing the isolation of liver progenitor cells from the adult liver, their exact origin has not been clearly defined; and the role played by mature hepatocytes as direct contributors to the hepatic progenitor cell pool has remained largely unknown. Here, we report strong evidence that mature hepatocytes in culture have the capacity to dedifferentiate into a population of adult liver progenitors without genetic or epigenetic manipulations.

Myeloid suppressor cells induced by hepatitis C virus suppress T‐cell responses through the production of reactive oxygen species

Robert S. Tacke, Hai‐Chon Lee, Celeste Goh, Jeremy Courtney, Stephen J. Polyak, Hugo R. Rosen, Young S. Hahn – 27 September 2011 – Impaired T‐cell responses in chronic hepatitis C virus (HCV) patients have been reported to be associated with the establishment of HCV persistent infection. However, the mechanism for HCV‐mediated T‐cell dysfunction is yet to be defined. Myeloid‐derived suppressor cells (MDSCs) play a pivotal role in suppressing T‐cell responses. In this study we examined the accumulation of MDSCs in human peripheral blood mononuclear cells (PBMCs) following HCV infection.

The human gallbladder secretes fibroblast growth factor 19 into bile: Towards defining the role of fibroblast growth factor 19 in the enterobiliary tract

Serge J.L.B. Zweers, Klaske A.C. Booij, Mina Komuta, Tania Roskams, Dirk J. Gouma, Peter L.M. Jansen, Frank G. Schaap – 27 September 2011 – Fibroblast growth factor 19 (FGF19) plays a crucial role in the negative feedback regulation of bile salt synthesis. In the postprandial state, activation of ileal farnesoid X receptor (FXR) by bile salts results in transcriptional induction of FGF19 and elevation of circulating FGF19 levels. An intestinal‐liver axis of FGF19 signaling results in down‐regulation of bile salt synthesis.

Hepatocellular Carcinoma Confirmation, Treatment, and Survival in Surveillance, Epidemiology, and End Results Registries, 1992‐2008

Sean F. Altekruse, Katherine A. McGlynn, Lois A. Dickie, David E. Kleiner – 27 September 2011 – Approaches to the diagnosis and management of hepatocellular carcinoma (HCC) are improving survival. In the Surveillance, Epidemiology, and End Results‐13 registries, HCC stage, histological confirmation, and first‐course surgery were examined. Among 21,390 HCC cases diagnosed with follow‐up of vital status during 1998‐2008, there were 4,727 (22%) with reported first‐course invasive liver surgery, local tumor destruction, or both.

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