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McVicker BL, Thiele GM, Tuma DJ, et al. Hepatocyte-mediated cytotoxicity and host defense mechanisms in the alcohol-injured liver. Hepatol Int. 2013;8:432-8doi: 10.1007/s12072-013-9511-7.
McVicker, B. L., Thiele, G. M., Tuma, D. J., & Casey, C. A. (2014). Hepatocyte-mediated cytotoxicity and host defense mechanisms in the alcohol-injured liver. Hepatology international, 8432-8. https://doi.org/10.1007/s12072-013-9511-7
McVicker, Benita L, et al. "Hepatocyte-mediated cytotoxicity and host defense mechanisms in the alcohol-injured liver." Hepatology international vol. 8 (2014): 432-8. doi: https://doi.org/10.1007/s12072-013-9511-7
McVicker BL, Thiele GM, Tuma DJ, Casey CA. Hepatocyte-mediated cytotoxicity and host defense mechanisms in the alcohol-injured liver. Hepatol Int. 2014 Sep;8:432-8. doi: 10.1007/s12072-013-9511-7. Epub 2013 Dec 29. PMID: 26201322.
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Hepatol Int. 2014 Sep;8:432-8. doi: 10.1007/s12072-013-9511-7. Epub 2013 Dec 29.

Hepatocyte-mediated cytotoxicity and host defense mechanisms in the alcohol-injured liver.

Hepatology international

Benita L McVicker, Geoffrey M Thiele, Dean J Tuma, Carol A Casey

Affiliations

  1. Research Service (151), VA Nebraska-Western Iowa Health Care System, 4101 Woolworth Avenue (151), Omaha, NE, 68105, USA. [email protected].
  2. Department of Internal Medicine, University of Nebraska Medical Center, 982000 Nebraska Medical Center, Omaha, NE, 68198-2000, USA. [email protected].
  3. Research Service (151), VA Nebraska-Western Iowa Health Care System, 4101 Woolworth Avenue (151), Omaha, NE, 68105, USA.
  4. Department of Internal Medicine, University of Nebraska Medical Center, 982000 Nebraska Medical Center, Omaha, NE, 68198-2000, USA.
  5. Department of Pathology and Microbiology, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE, 68198-5870, USA.
  6. Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE, 68198-5870, USA.

PMID: 26201322 DOI: 10.1007/s12072-013-9511-7

Abstract

The consumption of alcohol is associated with many health issues including alcoholic liver disease (ALD). The natural history of ALD involves the development of steatosis, inflammation (steatohepatitis), fibrosis and cirrhosis. During the stage of steatohepatitis, the combination of inflammation and cellular damage can progress to a severe condition termed alcoholic hepatitis (AH). Unfortunately, the pathogenesis of AH remains uncharacterized. Some modulations have been identified in host defense and liver immunity mechanisms during AH that highlight the role of intrahepatic lymphocyte accumulation and associated inflammatory cytokine responses. Also, it is hypothesized that alcohol-induced injury to liver cells may significantly contribute to the aberrant lymphocytic distribution that is seen in AH. In particular, the regulation of lymphocytes by hepatocytes may be disrupted in the alcoholic liver resulting in altered immunologic homeostasis and perpetuation of disease. In recent studies, it was demonstrated that the direct killing of activated T lymphocytes by hepatocytes is facilitated by the asialoglycoprotein receptor (ASGPR). The ASGPR is a well-characterized glycoprotein receptor that is exclusively expressed by hepatocytes. This hepatic receptor is known for its role in the clearance of desialylated glycoproteins or cells, yet neither its physiological function nor its role in disease states has been determined. Interestingly, alcohol markedly impairs ASGPR function; however, the effect alcohol has on ASGPR-mediated cytotoxicity of lymphocytes remains to be elucidated. This review discusses the contribution of hepatocytes in immunological regulation and, importantly, how pathological effects of ethanol disrupt hepatocellular-mediated defense mechanisms.

Keywords: Alcoholic hepatitis; Alcoholic liver disease; Asialoglycoprotein receptor; Intrahepatic lymphocytes; Receptor-mediated endocytosis

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