PMID- 12044522 OWN - NLM STAT- MEDLINE DCOM- 20021210 LR - 20240109 IS - 0168-8278 (Print) IS - 0168-8278 (Linking) VI - 36 IP - 6 DP - 2002 Jun TI - Phenotypic analysis of circulating and intrahepatic dendritic cell subsets in patients with chronic liver diseases. PG - 734-41 AB - BACKGROUND/AIMS: Dendritic cells (DCs) are the most potent professional antigen-presenting cells. Although two subsets of circulating DCs, lineage(-)CD11c(+)CD4(low) (CD11c(+)DCs) and lineage (-)CD11c(-)CD4(+)CD123(+) (CD123(+)DCs) are identified in humans, the role of each DC subset in the immunopathogenesis of liver diseases is unknown. METHODS: We examined the numbers and activation status of each DC subset in the circulation and in the inflamed livers in patients with chronic liver diseases by flow cytometry and immunohistochemistry. RESULTS: The numbers of circulating CD11c(+)DCs were inversely correlated with serum alanine aminotransferase (ALT) levels in patients with chronic viral hepatitis, and that the expression of costimulatory molecules on circulating CD11c(+)DCs in patients with chronic viral hepatitis was significantly up-regulated in patients with high serum levels of ALT. Both DCs are also identified in the livers by flow cytometry, and the expression of costimulatory molecule CD40 on those DCs was significantly higher in liver DCs than that in circulating DCs. Moreover, the ratios of CD11c(+)DCs/CD123(+)DCs were higher in liver DCs (mean+/-SD, 7.2+/-6.0) than those of circulating DCs (4.0+/-4.6). Immunohistochemically, CD11c(+) or CD123(+) cells and CD83(+) activated DCs were observed mostly in portal areas with mononuclear cell infiltration in various liver diseases. These overall data suggest that DCs, especially CD11c(+)DCs, could be associated with the necroinflammatory response in the liver of chronic viral liver diseases. CONCLUSIONS: DCs, especially CD11c(+)DCs, may be involved in the immunopathogenesis of chronic liver diseases. FAU - Kunitani, Hitoshi AU - Kunitani H AD - The Third Department of Internal Medicine, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-0194, Japan. FAU - Shimizu, Yukihiro AU - Shimizu Y FAU - Murata, Hiroyuki AU - Murata H FAU - Higuchi, Kiyohiro AU - Higuchi K FAU - Watanabe, Akiharu AU - Watanabe A LA - eng PT - Journal Article PL - Netherlands TA - J Hepatol JT - Journal of hepatology JID - 8503886 RN - 0 (Antigens, CD) RN - 0 (B7-2 Antigen) RN - 0 (CD11c Antigen) RN - 0 (CD40 Antigens) RN - 0 (CD86 protein, human) RN - 0 (HLA-DR Antigens) RN - 0 (IL3RA protein, human) RN - 0 (Immunoglobulins) RN - 0 (Interleukin-3 Receptor alpha Subunit) RN - 0 (Membrane Glycoproteins) RN - 0 (Receptors, Interleukin-3) RN - EC 2.6.1.2 (Alanine Transaminase) SB - IM MH - Adult MH - Aged MH - Alanine Transaminase/blood MH - Antigens, CD/analysis MH - B7-2 Antigen MH - CD11c Antigen/analysis MH - CD40 Antigens/analysis MH - Chronic Disease MH - Dendritic Cells/chemistry/*cytology MH - Female MH - Flow Cytometry MH - HLA-DR Antigens/analysis MH - Humans MH - Immunoglobulins/analysis MH - Immunohistochemistry MH - Immunophenotyping MH - Interleukin-3 Receptor alpha Subunit MH - Liver/*chemistry/*cytology MH - Liver Diseases/*pathology MH - Male MH - Membrane Glycoproteins/analysis MH - Middle Aged MH - Receptors, Interleukin-3/analysis MH - CD83 Antigen EDAT- 2002/06/05 10:00 MHDA- 2002/12/11 04:00 CRDT- 2002/06/05 10:00 PHST- 2002/06/05 10:00 [pubmed] PHST- 2002/12/11 04:00 [medline] PHST- 2002/06/05 10:00 [entrez] AID - S0168827802000624 [pii] AID - 10.1016/s0168-8278(02)00062-4 [doi] PST - ppublish SO - J Hepatol. 2002 Jun;36(6):734-41. doi: 10.1016/s0168-8278(02)00062-4.