CXC receptor‐2 knockout genotype increases X‐linked inhibitor of apoptosis protein and protects mice from acetaminophen hepatotoxicity

Bin Hu, Lisa M. Colletti – 23 July 2010 – Although acetaminophen is a commonly used analgesic, it can be highly hepatotoxic. This study seeks to further investigate the mechanisms involved in acetaminophen‐induced hepatotoxicity and the role of chemokine (C‐X‐C motif) receptor 2 (CXCR2) receptor/ligand interactions in the liver's response to and recovery from acetaminophen toxicity. The CXC chemokines and their receptor, CXCR2, are important inflammatory mediators and are involved in the control of some types of cellular proliferation.

Thiazolidinediones inhibit hepatocarcinogenesis in hepatitis B virus–transgenic mice by peroxisome proliferator‐activated receptor γ–independent regulation of nucleophosmin

Andrea Galli, Elisabetta Ceni, Tommaso Mello, Simone Polvani, Mirko Tarocchi, Francesca Buccoliero, Francesca Lisi, Laura Cioni, Barbara Ottanelli, Valeria Foresta, Guido Mastrobuoni, Gloriano Moneti, Giuseppe Pieraccini, Calogero Surrenti, Stefano Milani – 23 July 2010 – Antidiabetic thiazolidinediones (TZD) have in vitro antiproliferative effect in epithelial cancers, including hepatocellular carcinoma (HCC). The effective anticancer properties and the underlying molecular mechanisms of these drugs in vivo remain unclear.

Human immunodeficiency virus (HIV)‐1 infects human hepatic stellate cells and promotes collagen I and monocyte chemoattractant protein‐1 expression: Implications for the pathogenesis of HIV/hepatitis C virus–induced liver fibrosis

Ana C. Tuyama, Feng Hong, Yedidya Saiman, Chuansheng Wang, Derya Ozkok, Arevik Mosoian, Ping Chen, Benjamin K. Chen, Mary E. Klotman, Meena B. Bansal – 23 July 2010 – Patients coinfected with human immunodeficiency virus (HIV) and hepatitis C virus (HCV) develop more rapid fibrosis than those infected with HCV only. In HIV/HCV‐coinfected patients, fibrosis progression correlates with HIV RNA levels, suggesting a direct role of HIV in liver fibrogenesis.

Association between serum uric acid level and chronic liver disease in the United States

Anita Afzali, Noel S. Weiss, Edward J. Boyko, George N. Ioannou – 23 July 2010 – Elevated serum uric acid (UA) levels strongly reflect and may even cause oxidative stress, insulin resistance, and metabolic syndrome, which are risk factors for the progression of liver disease. We sought to determine whether serum UA levels are associated with the development of cirrhosis or the presence of elevated serum liver enzymes.

Involvement of PA28γ in the propagation of hepatitis C virus

Kohji Moriishi, Ikuo Shoji, Yoshio Mori, Ryosuke Suzuki, Tetsuro Suzuki, Chikako Kataoka, Yoshiharu Matsuura – 23 July 2010 – We have reported previously that the proteasome activator PA28γ participates not only in degradation of hepatitis C virus (HCV) core protein in the nucleus but also in the pathogenesis in transgenic mice expressing HCV core protein. However, the biological significance of PA28γ in the propagation of HCV has not been clarified. PA28γ is an activator of proteasome responsible for ubiquitin‐independent degradation of substrates in the nucleus.

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