Involvement of the CXCL12/CXCR4 pathway in the advanced liver disease that is associated with hepatitis C virus or hepatitis B virus

Chronic hepatitis C virus (HCV) and hepatitis B virus (HBV) infection is accompanied by inflammation and fibrosis eventually leading to cirrhosis. The chemokine CXCL12 is involved in chronic inflammatory conditions. The role of the CXCL12/CXCR4 pathway in HCV‐ and HBV‐associated liver inflammation a...

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Veröffentlicht in:European journal of immunology 2004-04, Vol.34 (4), p.1164-1174
Hauptverfasser: Wald, Ori, Pappo, Orit, Safadi, Rifaat, Dagan‐Berger, Michal, Beider, Katia, Wald, Hanna, Franitza, Suzanna, Weiss, Ido, Avniel, Shani, Boaz, Pal, Hanna, Jacob, Zamir, Gidi, Eid, Ahmed, Mandelboim, Ofer, Spengler, Ulrich, Galun, Eithan, Peled, Amnon
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container_issue 4
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container_title European journal of immunology
container_volume 34
creator Wald, Ori
Pappo, Orit
Safadi, Rifaat
Dagan‐Berger, Michal
Beider, Katia
Wald, Hanna
Franitza, Suzanna
Weiss, Ido
Avniel, Shani
Boaz, Pal
Hanna, Jacob
Zamir, Gidi
Eid, Ahmed
Mandelboim, Ofer
Spengler, Ulrich
Galun, Eithan
Peled, Amnon
description Chronic hepatitis C virus (HCV) and hepatitis B virus (HBV) infection is accompanied by inflammation and fibrosis eventually leading to cirrhosis. The chemokine CXCL12 is involved in chronic inflammatory conditions. The role of the CXCL12/CXCR4 pathway in HCV‐ and HBV‐associated liver inflammation and fibrosis was therefore studied. The levels and tissue localization of CXCL12 in liver and plasma of HCV and HBV patients were tested using immunohistochemistry and ELISA. The expression and function of CXCR4 on liver‐infiltrating lymphocytes (LIL) were tested by FACS and transwell migration assays. We found that CXCL12 is expressed by bile duct epithelial cells in normal liver tissue. Bile duct proliferation and liver fibrosis in chronic HCV and HBV infection result in the anatomical re‐distribution of CXCL12 in the liver. Moreover, CXCL12 is up‐regulated in the endothelium of neo‐blood‐vessels formed in active inflammatory foci and is significantly elevated, compared with controls, in the plasma of patients with advanced liver fibrosis. Complementing these observations were others indicating that over 50% of LIL express CXCR4 and, in response to CXCL12, migrated and adhered to fibronectin. These observations suggest an important role for the CXCL12/CXCR4 pathway in recruitment and retention of immune cells in the liver during chronic HCV and HBV infection.
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Complementing these observations were others indicating that over 50% of LIL express CXCR4 and, in response to CXCL12, migrated and adhered to fibronectin. 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Complementing these observations were others indicating that over 50% of LIL express CXCR4 and, in response to CXCL12, migrated and adhered to fibronectin. These observations suggest an important role for the CXCL12/CXCR4 pathway in recruitment and retention of immune cells in the liver during chronic HCV and HBV infection.</abstract><cop>Weinheim</cop><pub>WILEY‐VCH Verlag</pub><pmid>15048728</pmid><doi>10.1002/eji.200324441</doi><tpages>11</tpages></addata></record>
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subjects Cell Adhesion - immunology
Cell Movement - immunology
Chemokine
Chemokine CXCL12
Chemokines, CXC - analysis
Chemokines, CXC - biosynthesis
Chemokines, CXC - immunology
Cirrhosis
CXCR4
Enzyme-Linked Immunosorbent Assay
Fibrosis
Flow Cytometry
Hepacivirus - immunology
Hepatitis B virus
Hepatitis B virus - immunology
Hepatitis B, Chronic - immunology
Hepatitis C virus
Hepatitis C, Chronic - immunology
Humans
Immunohistochemistry
Inflammation
Lymphocytes - immunology
Receptors, CXCR4 - analysis
Receptors, CXCR4 - biosynthesis
Receptors, CXCR4 - immunology
Signal Transduction - immunology
title Involvement of the CXCL12/CXCR4 pathway in the advanced liver disease that is associated with hepatitis C virus or hepatitis B virus
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