Bile acid excess induces cardiomyopathy and metabolic dysfunctions in the heart

Moreshwar S. Desai, Bhoomika Mathur, Zeena Eblimit, Hernan Vasquez, Heinrich Taegtmeyer, Saul J. Karpen, Daniel J. Penny, David D. Moore, Sayeepriyadarshini Anakk – 24 October 2016 – Cardiac dysfunction in patients with liver cirrhosis is strongly associated with increased serum bile acid concentrations. Here we show that excess bile acids decrease fatty acid oxidation in cardiomyocytes and can cause heart dysfunction, a cardiac syndrome that we term cholecardia.

Retracted: Redox‐dependent regulation of hepatocyte absent in melanoma 2 inflammasome activation in sterile liver injury in mice

Qian Sun, Patricia Loughran, Richard Shapiro, Indira H. Shrivastava, Daniel J. Antoine, Tunliang Li, Zhengzheng Yan, Jie Fan, Timothy R. Billiar, Melanie J. Scott – 24 October 2016 – Sterile liver inflammation, such as liver ischemia‐reperfusion, hemorrhagic shock after trauma, and drug‐induced liver injury, is initiated and regulated by endogenous mediators including DNA and reactive oxygen species.

Erythrocytosis in hepatocellular carcinoma portends poor prognosis by respiratory dysfunction secondary to mitochondrial DNA mutations

Shizhong Ke, Shuzhen Chen, Zihui Dong, Christopher S. Hong, Qi Zhang, Liang Tang, Pinghua Yang, Jian Zhai, Hexin Yan, Feng Shen, Zhengping Zhuang, Wen Wen, Hongyang Wang – 24 October 2016 – Erythrocytosis is a common paraneoplastic syndrome associated with hepatocellular carcinoma. Although increased erythropoietin (EPO) is found in these patients, the clinical significance and molecular mechanisms underlying this observation are unclear.

Polymorphisms in the IL‐1 gene cluster influence systemic inflammation in patients at risk for acute‐on‐chronic liver failure

José Alcaraz‐Quiles, Esther Titos, Mireia Casulleras, Marco Pavesi, Cristina López‐Vicario, Bibiana Rius, Aritz Lopategi, Andrea Gottardi, Ivo Graziadei, Henning Gronbaek, Pere Ginès, Mauro Bernardi, Vicente Arroyo, Joan Clària – 24 October 2016 – Acute‐on‐chronic liver failure (ACLF) in cirrhosis is an increasingly recognized syndrome characterized by acute decompensation, organ failure(s) and high short‐term mortality. Recent findings suggest that an overexuberant systemic inflammation plays a primary role in ACLF progression.

Rifaximin has no effect on hemodynamics in decompensated cirrhosis: A randomized, double‐blind, placebo‐controlled trial

Nina Kimer, Julie Steen Pedersen, Troels Malte Busk, Lise Lotte Gluud, Lise Hobolth, Aleksander Krag, Søren Møller, Flemming Bendtsen, Copenhagen Rifaximin (CoRif) Study Group – 24 October 2016 – Decompensated cirrhosis is characterized by disturbed systemic and splanchnic hemodynamics. Bacterial translocation from the gut is considered the key driver in this process. Intestinal decontamination with rifaximin may improve hemodynamics.

Antiviral treatment and liver‐related complications in hepatitis delta

Anika Wranke, Beatriz Calle Serrano, Benjamin Heidrich, Janina Kirschner, Birgit Bremer, Patrick Lehmann, Svenja Hardtke, Katja Deterding, Kerstin Port, Max Westphal, Michael P. Manns, Markus Cornberg, Heiner Wedemeyer – 22 October 2016 – Hepatitis delta virus (HDV) is the most severe form of viral hepatitis. Pegylated interferon alfa (PEG‐IFNα) is effective in only 25%‐30% of patients and is associated with frequent side effects. The aim of this study was to analyze the clinical long‐term outcome of hepatitis delta in relation to different antiviral treatment strategies.

Expression of scavenger receptor‐AI promotes alternative activation of murine macrophages to limit hepatic inflammation and fibrosis

Adam C. Labonte, Sun‐Sang J. Sung, Lucas T. Jennelle, Aditya P. Dandekar, Young S. Hahn – 22 October 2016 – The liver maintains an immunologically tolerant environment as a result of continuous exposure to food and bacterial constituents from the digestive tract. Hepatotropic pathogens can take advantage of this niche and establish lifelong chronic infections causing hepatic fibrosis and hepatocellular carcinoma. Macrophages (Mϕ) play a critical role in regulation of immune responses to hepatic infection and regeneration of tissue.

IL‐6 trans‐signaling is essential for the development of hepatocellular carcinoma in mice

Juri Bergmann, Miryam Müller, Niklas Baumann, Manuel Reichert, Carola Heneweer, Julia Bolik, Karsten Lücke, Sabine Gruber, Antonella Carambia, Susanne Boretius, Ivo Leuschner, Thomas Becker, Björn Rabe, Johannes Herkel, F. Thomas Wunderlich, Hans‐Willi Mittrücker, Stefan Rose‐John, Dirk Schmidt‐Arras – 22 October 2016 – Hepatocellular carcinoma (HCC) is one of the most frequent tumors worldwide with rising incidence. The inflammatory cytokine, interleukin‐6 (IL‐6), is a critical mediator of HCC development.

Human liver sinusoidal endothelial cells promote intracellular crawling of lymphocytes during recruitment: A new step in migration

Daniel A. Patten, Garrick K. Wilson, Dalan Bailey, Robert K. Shaw, Sirpa Jalkanen, Marko Salmi, Antal Rot, Chris J. Weston, David H. Adams, Shishir Shetty – 22 October 2016 – The recruitment of lymphocytes via the hepatic sinusoidal channels and positioning within liver tissue is a critical event in the development and persistence of chronic inflammatory liver diseases. The hepatic sinusoid is a unique vascular bed lined by hepatic sinusoidal endothelial cells (HSECs), a functionally and phenotypically distinct subpopulation of endothelial cells.

Long noncoding RNA MEG3 induces cholestatic liver injury by interaction with PTBP1 to facilitate shp mRNA decay

Li Zhang, Zhihong Yang, Jocelyn Trottier, Olivier Barbier, Li Wang – 22 October 2016 – Bile acids (BAs) play critical physiological functions in cholesterol homeostasis, and deregulation of BA metabolism causes cholestatic liver injury. The long noncoding RNA maternally expressed gene 3 (MEG3) was recently shown as a potential tumor suppressor; however, its basic hepatic function remains elusive.

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