PMID- 10726686 OWN - NLM STAT- MEDLINE DCOM- 20000404 LR - 20190710 IS - 0022-3468 (Print) IS - 0022-3468 (Linking) VI - 35 IP - 3 DP - 2000 Mar TI - Elevation of serum interleukin-18 levels and activation of Kupffer cells in biliary atresia. PG - 446-9 AB - BACKGROUND/PURPOSE: Interleukin-18 (IL-18)/interferon-gamma-inducing factor (IGIF) is a novel proinflammatory cytokine that can induce interferon gamma (IFN-gamma). In addition, IL-18 enhances intracellular adhesion molecule-1 (ICAM-1) expression as well as Fas ligand (FasL) expression, and induces apoptosis in hepatic injury. The aim of this study was to clarify the potential role of IL-18 in the pathogenesis of the progressive inflammation and fibrosis in biliary atresia (BA). METHODS: Six children with BA before hepatic portoenterostomy (HPE), 13 with BA including 7 without jaundice and 6 with persistent jaundice after HPE, and 16 healthy controls were examined. Blood samples were obtained preoperatively from 6 patients, after HPE from 13, and after liver transplantation from 4. The IL-18 level was determined by an enzyme-linked immunosorbent assay (ELISA). Immunohistochemically, liver specimens from BA patients were studied using a monoclonal antibody to macrophage-associated antigen (CD68). RESULTS: IL-18 levels were elevated in the patients before HPE compared with those of the controls (349+/-54 pg/mL v. 138+/-13 pg/mL, P<.0001). After HPE, extremely high concentrations of IL-18 were observed in patients with persistent jaundice (532+/-95 pg/mL, P<.0001), and the IL-18 levels were significantly high even in the patients without jaundice (249+/-29 pg/mL, P<0.005). The high IL-18 level lasted for a long time even in the patients without jaundice after HPE. In contrast, the IL-18 levels immediately decreased after liver transplantation. Immunohistochemically, the number of CD68-positive Kupffer cells was significantly higher, and the size was larger in the livers of the patients than in the controls. The proliferation of CD68-positive cells was much more conspicuous in the liver specimens obtained during liver transplantation than in those at the time of HPE. CONCLUSIONS: Our findings showed elevation of serum IL-18 levels and activation of Kupffer cells in BA. IL-18 released from activated Kupffer cells might play an important role in the pathophysiology of the progressive inflammation and fibrosis in BA. Furthermore, IL-18 level may be related to the prognosis in patients with BA. FAU - Urushihara, N AU - Urushihara N AD - Department of Surgery, Okayama University Medical School, Japan. FAU - Iwagaki, H AU - Iwagaki H FAU - Yagi, T AU - Yagi T FAU - Kohka, H AU - Kohka H FAU - Kobashi, K AU - Kobashi K FAU - Morimoto, Y AU - Morimoto Y FAU - Yoshino, T AU - Yoshino T FAU - Tanimoto, T AU - Tanimoto T FAU - Kurimoto, M AU - Kurimoto M FAU - Tanaka, N AU - Tanaka N LA - eng PT - Journal Article PL - United States TA - J Pediatr Surg JT - Journal of pediatric surgery JID - 0052631 RN - 0 (Antigens, CD) RN - 0 (Antigens, Differentiation, Myelomonocytic) RN - 0 (CD68 antigen, human) RN - 0 (Interleukin-18) SB - IM MH - Antigens, CD MH - Antigens, Differentiation, Myelomonocytic MH - Apoptosis MH - Biliary Atresia/blood/*etiology/immunology/surgery MH - Child MH - Child, Preschool MH - Enzyme-Linked Immunosorbent Assay MH - Humans MH - Infant MH - Interleukin-18/*blood MH - Kupffer Cells/immunology/*physiology MH - Liver/immunology/pathology MH - Liver Transplantation MH - Portoenterostomy, Hepatic MH - Prognosis EDAT- 2000/03/22 00:00 MHDA- 2000/03/22 00:01 CRDT- 2000/03/22 00:00 PHST- 2000/03/22 00:00 [pubmed] PHST- 2000/03/22 00:01 [medline] PHST- 2000/03/22 00:00 [entrez] AID - S0022-3468(00)90211-2 [pii] AID - 10.1016/s0022-3468(00)90211-2 [doi] PST - ppublish SO - J Pediatr Surg. 2000 Mar;35(3):446-9. doi: 10.1016/s0022-3468(00)90211-2.