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Am J Physiol Endocrinol Metab 273: E720-E726, 1997;
0193-1849/97 $5.00
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Vol. 273, Issue 4, E720-E726, October 1997

Interleukin-8 can mediate acute-phase protein production by isolated human hepatocytes

Stephen J. Wigmore, Kenneth C. H. Fearon, Jean P. Maingay, Paul B. S. Lai, and James A. Ross

University Department of Surgery, Royal Infirmary of Edinburgh, Edinburgh EH3 9YW, United Kingdom

During the course of studies designed to identify the role of cytokines in the reprioritization of hepatic protein synthesis associated with cachexia we detected a hepatocyte-stimulating moiety in the supernatants of pancreatic cancer cells that was unrelated to interleukin (IL)-6. This study identifies that moiety as IL-8 and investigates the role of IL-8 in the induction of acute-phase protein production. The human pancreatic cancer cell line MIA PaCa-2 produced >1 ng/ml of IL-8 per 24 h, and supernatants from this cell line induced C-reactive protein (CRP) production from isolated human hepatocytes. Addition of neutralizing anti-human IL-8 antibody to such supernatants produced almost complete inhibition of CRP production. The addition of recombinant human IL-8 to hepatocytes resulted in a dose-dependent increase in CRP, alpha 1-acid glycoprotein, and alpha 1-antichymotrypsin production and a decrease in the production of transferrin and prealbumin. This study demonstrates that recombinant or tumor-derived IL-8 can modulate acute-phase protein production from isolated human hepatocytes and from human hepatoma cells.

C-reactive protein; pancreatic cancer cells


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