Tumor necrosis factor‐α‐mediated hepatocyte apoptosis stimulates fibrosis in the steatotic liver in mice

Yosuke Osawa, Ekumi Kojika, Yukiko Hayashi, Masamichi Kimura, Koji Nishikawa, Sachiyo Yoshio, Hiroyoshi Doi, Tatsuya Kanto, Kiminori Kimura – 13 February 2018 – Hepatocyte apoptosis has been implicated in the progression of nonalcoholic steatohepatitis. However, it is unclear whether the induction of tumor necrosis factor (TNF)‐α‐mediated hepatocyte apoptosis in the simple fatty liver triggers liver fibrosis. To address this question, high‐fat diet‐fed mice were repeatedly administered D‐galactosamine, which increases the sensitivity of hepatocytes to TNF‐α‐mediated apoptosis.

Liver paired exchange: Can the liver emulate the kidney?

Ashish Mishra, Alexis Lo, Grace S. Lee, Benjamin Samstein, Peter S. Yoo, Matthew H. Levine, David S. Goldberg, Abraham Shaked, Kim M. Olthoff, Peter L. Abt – 10 February 2018 – Kidney paired exchange (KPE) constitutes 12% of all living donor kidney transplantations (LDKTs) in the United States. The success of KPE programs has prompted many in the liver transplant community to consider the possibility of liver paired exchange (LPE). Though the idea seems promising, the application has been limited to a handful of centers in Asia.

Vinyl chloride dysregulates metabolic homeostasis and enhances diet‐induced liver injury in mice

Anna L. Lang, Liya Chen, Gavin D. Poff, Wen‐Xing Ding, Russel A. Barnett, Gavin E. Arteel, Juliane I. Beier – 9 February 2018 – Vinyl chloride (VC), a common industrial organochlorine and environmental pollutant, has been shown to directly cause hepatic angiosarcoma and toxicant‐associated steatohepatitis at high exposure levels. However, the impact of lower concentrations of VC on the progression of underlying liver diseases (e.g., nonalcoholic fatty liver disease [NAFLD]) is unclear.

Resistance analysis of genotype 3 hepatitis C virus indicates subtypes inherently resistant to nonstructural protein 5A inhibitors

David Smith, Andrea Magri, David Bonsall, Camilla L.C. Ip, Amy Trebes, Anthony Brown, Palo Piazza, Rory Bowden, Dung Nguyen, M. Azim Ansari, Peter Simmonds, Eleanor Barnes, STOP‐HCV Consortium – 9 February 2018 – Hepatitis C virus (HCV) genotype (gt) 3 is highly prevalent globally, with non‐gt3a subtypes common in Southeast Asia. Resistance‐associated substitutions (RASs) have been shown to play a role in treatment failure. However, the role of RASs in gt3 is not well understood.

Cholangiocyte‐derived exosomal long noncoding RNA H19 promotes cholestatic liver injury in mouse and humans

Xiaojiaoyang Li, Runping Liu, Zhiming Huang, Emily C. Gurley, Xuan Wang, Juan Wang, Hongliang He, Hu Yang, Guanhua Lai, Luyong Zhang, Jasmohan S. Bajaj, Melanie White, William M. Pandak, Phillip B. Hylemon, Huiping Zhou – 9 February 2018 – Cholestatic liver injury is an important clinical problem with limited understanding of disease pathologies. Exosomes are small extracellular vesicles released by a variety of cells, including cholangiocytes.

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