PMID- 10798742 OWN - NLM STAT- MEDLINE DCOM- 20000525 LR - 20190713 IS - 0041-1337 (Print) IS - 0041-1337 (Linking) VI - 69 IP - 7 DP - 2000 Apr 15 TI - The protective role of Kupffer cells in humoral injury of xenoperfused rat livers. PG - 1283-9 AB - BACKGROUND: The role of Kupffer cells in a hepatic xenograft rejection is still unclear. We investigated the effect of blocking Kupffer cells on xenogeneic humoral injury using rat livers as the xenoperfusion models. METHODS: Rat livers were perfused with fresh human blood after pretreatment either with normal saline (group 1; n = 8) or with gadolinium chloride (GdCl3) solution (group 2; n = 8). Tissue injury was evaluated by alanine aminotransferase release and histological examination. Tumor necrosis factor-alpha (TNF-alpha) production from rat livers was measured by enzyme-linked immunosorbent assay and also examined by immunohistochemistry. In addition, Kupffer cells were isolated after pretreatment either with normal saline or with GdCl3 solution and incubated with human serum. Localization of human C3 and IgM was examined by immunofluorescence. RESULTS: Alanine aminotransferase release in group 2 was significantly higher than in group 1 (P = 0.015). Histological examination revealed more severe tissue injury in group 2. The mean TNF-alpha level was not significantly different between the two groups. In immunohistochemistry, TNF-alpha was positive primarily on vascular endothelial cells in both groups. Immunofluorescence of saline-treated Kupffer cells showed an uptake of human C3 in the cytoplasm, whereas no uptake was observed in GdCl3-treated cells. The uptake of human IgM did not differ between the two groups. CONCLUSIONS: These results suggest that Kupffer cells have a protective role in preventing xenogeneic humoral injury. Their ability to absorb xenogeneic complements may contribute to this protective mechanism. FAU - Takeyama, O AU - Takeyama O AD - Department of Gastroenterological Surgery, Kyoto University Graduate School of Medicine, Japan. FAU - Ikai, I AU - Ikai I FAU - Yamamoto, M AU - Yamamoto M FAU - Kanazawa, A AU - Kanazawa A FAU - Yagi, T AU - Yagi T FAU - Uesugi, T AU - Uesugi T FAU - Nishitai, R AU - Nishitai R FAU - Satoh, S AU - Satoh S FAU - Terajima, H AU - Terajima H FAU - Yamaoka, Y AU - Yamaoka Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Transplantation JT - Transplantation JID - 0132144 RN - 0 (Antigens, Heterophile) RN - 0 (Complement C3) RN - 0 (Tumor Necrosis Factor-alpha) RN - AU0V1LM3JT (Gadolinium) RN - EC 2.6.1.2 (Alanine Transaminase) RN - P7082WY76D (gadolinium chloride) SB - IM CIN - Transplantation. 2002 Feb 15;73(3):483-4. PMID: 11884951 MH - Alanine Transaminase/metabolism MH - Animals MH - Antigens, Heterophile/*physiology MH - *Blood Physiological Phenomena MH - Cells, Cultured MH - Complement C3/metabolism MH - Cytoplasm/metabolism MH - Fluorescent Antibody Technique MH - Gadolinium/pharmacology MH - Humans MH - Immunohistochemistry MH - Kupffer Cells/drug effects/metabolism/*physiology MH - Liver/pathology MH - *Liver Circulation MH - Male MH - Rats MH - Rats, Wistar MH - Tumor Necrosis Factor-alpha/metabolism/physiology EDAT- 2000/05/08 09:00 MHDA- 2000/06/08 09:00 CRDT- 2000/05/08 09:00 PHST- 2000/05/08 09:00 [pubmed] PHST- 2000/06/08 09:00 [medline] PHST- 2000/05/08 09:00 [entrez] AID - 10.1097/00007890-200004150-00013 [doi] PST - ppublish SO - Transplantation. 2000 Apr 15;69(7):1283-9. doi: 10.1097/00007890-200004150-00013.