Asialoglycoprotein receptor facilitates hemolysis in patients with alcoholic liver cirrhosis

Philip Hilgard, Thomas Schreiter, Richard J. Stockert, Guido Gerken, Ulrich Treichel – 26 April 2004 – Hemolysis in patients with advanced alcoholic liver disease is a common clinical problem and indicates an unfavorable prognosis. In many cases, the etiology of the hemolysis remains unknown. We observed three patients with alcoholic liver disease, suffering from severe hemolytic anemia, requiring multiple blood transfusions. Steroid therapy was ineffective and two of the patients died.

Interleukin 22 (IL‐22) plays a protective role in T cell‐mediated murine hepatitis: IL‐22 is a survival factor for hepatocytes via STAT3 activation

Svetlana Radaeva, Rui Sun, Hong‐na Pan, Feng Hong, Bin Gao – 26 April 2004 – The central role of T cell activation in hepatocellular injury has been well documented. In this article, we provide evidence suggesting that T cells may also play a protective role in liver disease by releasing interleukin‐22 (IL‐22), a recently identified T cell‐derived cytokine whose biological significance is unclear.

The zonal distribution of megamitochondria with crystalline inclusions in nonalcoholic steatohepatitis

Tri H. Le, Stephen H. Caldwell, Jan A. Redick, Bonnie L. Sheppard, Christine A. Davis, Kristen O. Arseneau, Julia C. Iezzoni, Elizabeth E. Hespenheide, Abdullah Al‐Osaimi, Theresa C. Peterson – 26 April 2004 – Megamitochondria with crystalline inclusions (MMC) have been previously described in nonalcoholic fatty liver; however, their distribution within hepatic zones is unknown. We sought to determine this distribution from the core liver biopsy specimens of 31 patients: 8 males and 23 females, age range 21 to 72 years.

Expression of the CXCR3 ligand I‐TAC by hepatocytes in chronic hepatitis C and its correlation with hepatic inflammation

Karla J. Helbig, Andrew Ruszkiewicz, Ljiljana Semendric, Hugh A.J. Harley, Shaun R. McColl, Michael R. Beard – 26 April 2004 – The factors that regulate lymphocyte traffic in chronic hepatitis C (CHC) are not completely defined. Interferon (IFN)‐inducible T cell α chemoattractant (I‐TAC) is a relatively new member of the CXCR3 chemokine ligand family that selectively recruits activated T cells to sites of inflammation. To determine if I‐TAC plays a role in CHC, we investigated I‐TAC expression in hepatitis C virus (HCV)‐infected liver biopsy material.

Cytokines increase CRE binding but decrease CRE‐mediated reporter activity in rat hepatocytes by increasing c‐Jun

Baochun Zhang, Shubing Liu, Michele D. Perpetua, William H. Walker, Brian G. Harbrecht – 26 April 2004 – The cyclic AMP response element (CRE) has been implicated in the regulation of the expression of many genes and cellular processes important in hepatocyte function. CRE sites exist in the promoter regions of several genes expressed during inflammation. Numerous studies on the role of CRE in hepatocyte gene expression have been performed in resting hepatocytes, but the role of CRE during inflammation is unknown.

Liver NK cells expressing TRAIL are toxic against self hepatocytes in mice

Makoto Ochi, Hideki Ohdan, Hiroshi Mitsuta, Takashi Onoe, Daisuke Tokita, Hidetaka Hara, Kohei Ishiyama, Wendy Zhou, Yuka Tanaka, Toshimasa Asahara – 26 April 2004 – Although it is known that activation of natural killer (NK) cells causes liver injury, the mechanisms underlying NK cell‐induced killing of self‐hepatocytes are not clear. We demonstrated that liver NK cells have cytotoxicity against normal syngeneic hepatocytes in mice. Polyinosinic‐polycytidylic acid (poly I:C) treatment enhanced hepatocyte toxicity of liver NK cells but not that of spleen NK cells.

Recently primed CD8+ T cells entering the liver induce hepatocytes to interact with naïve CD8+ T cells in the mouse

Nektarios Dikopoulos, Ursula Wegenka, Andrea Kröger, Hansjörg Hauser, Reinhold Schirmbeck, Jörg Reimann – 26 April 2004 – Large number of T cells traffic through the liver. In order to examine the effects of such traffic on the phenotype of hepatocytes, we vaccinated mice using DNA vaccines encoding antigens with MHC class I‐binding epitopes. Small numbers of activated CD8+ T blasts (105–106/liver) changed the surface phenotype and cytokine expression profile of hepatocytes (HCs).

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