PMID- 15906084 OWN - NLM STAT- MEDLINE DCOM- 20050927 LR - 20181113 IS - 0945-6317 (Print) IS - 0945-6317 (Linking) VI - 446 IP - 6 DP - 2005 Jun TI - A murine model of NKT cell-mediated liver injury induced by alpha-galactosylceramide/d-galactosamine. PG - 663-73 AB - Natural killer-T (NKT) cells are rich in the liver. However, their involvement in liver injury is not fully understood. We developed here a new murine model of NKT-cell-activation-associated liver injury, and investigated a role of tumor necrosis factor alpha (TNF-alpha) and Fas in pathogenesis. We injected intraperitoneally alpha-galactosylceramide (alpha-GalCer), an NKT-cell stimulant, into D-galactosamine (GalN)-sensitized mice. Survival rate, pathological changes of the liver, and plasma concentrations of cytokines were studied. Alpha-GalCer/GalN administration gave a lethal effect within 7 h, making pathological changes such as massive parenchymal hemorrhage, hepatocyte apoptosis, sinusoidal endothelial cell injury, and close apposition of lymphocytes to apoptotic hepatocytes. Anti-NK1.1 mAb-pretreated mice and Valpha14NKT knock out (KO) mice did not develop liver injury. Tumor necrosis factor-alpha (TNF-alpha) and interferon-gamma (IFN-gamma) were elevated at 4 h in the plasma. These cytokines were produced by hepatic lymphocytes as demonstrated by in vitro stimulation with alpha-GalCer. The lethal effect was suppressed in TNF-alpha KO mice, TNF receptor-1 KO mice, and lpr/lpr (Fas deficient) mice, whereas it was not in IFN-gamma KO mice. These results indicate that the present liver injury is characterized by parenchymal hemorrhage and hepatocyte apoptosis, and mediated by TNF-alpha secretion and direct cytotoxicity of alpha-GalCer-activated NKT cells. FAU - Fujii, Hideki AU - Fujii H AD - Department of Hepatology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan. rolahidek@med.osaka-cu.ac.jp FAU - Seki, Shuichi AU - Seki S FAU - Kobayashi, Sawako AU - Kobayashi S FAU - Kitada, Takuya AU - Kitada T FAU - Kawakita, Nobuyoshi AU - Kawakita N FAU - Adachi, Keishi AU - Adachi K FAU - Tsutsui, Hiroko AU - Tsutsui H FAU - Nakanishi, Kenji AU - Nakanishi K FAU - Fujiwara, Hiromi AU - Fujiwara H FAU - Ikarashi, Yoshinori AU - Ikarashi Y FAU - Taniguchi, Masaru AU - Taniguchi M FAU - Kronenberg, Mitchell AU - Kronenberg M FAU - Ikemoto, Masaru AU - Ikemoto M FAU - Nakajima, Yuji AU - Nakajima Y FAU - Arakawa, Tetsuo AU - Arakawa T FAU - Kaneda, Kenji AU - Kaneda K LA - eng PT - Journal Article DEP - 20050520 PL - Germany TA - Virchows Arch JT - Virchows Archiv : an international journal of pathology JID - 9423843 RN - 0 (Galactosylceramides) RN - 0 (Receptors, Tumor Necrosis Factor) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (alpha-galactosylceramide) RN - 7535-00-4 (Galactosamine) RN - 82115-62-6 (Interferon-gamma) SB - IM EIN - Virchows Arch. 2006 Aug;449(2):279. Mitchell, Kronenberg [corrected to Kronenberg, Mitchell] MH - Animals MH - Apoptosis/physiology MH - Chemical and Drug Induced Liver Injury MH - Disease Models, Animal MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Flow Cytometry MH - Galactosamine/pharmacology MH - Galactosylceramides/*toxicity MH - In Situ Nick-End Labeling MH - Interferon-gamma/blood/deficiency/genetics MH - Killer Cells, Natural/*immunology MH - Liver/*immunology/*injuries/pathology MH - Liver Diseases/*immunology/pathology MH - Mice MH - Mice, Knockout MH - Receptors, Tumor Necrosis Factor/metabolism MH - Reverse Transcriptase Polymerase Chain Reaction MH - Tumor Necrosis Factor-alpha/metabolism EDAT- 2005/05/21 09:00 MHDA- 2005/09/28 09:00 CRDT- 2005/05/21 09:00 PHST- 2004/11/08 00:00 [received] PHST- 2005/03/25 00:00 [accepted] PHST- 2005/05/21 09:00 [pubmed] PHST- 2005/09/28 09:00 [medline] PHST- 2005/05/21 09:00 [entrez] AID - 10.1007/s00428-005-1265-8 [doi] PST - ppublish SO - Virchows Arch. 2005 Jun;446(6):663-73. doi: 10.1007/s00428-005-1265-8. Epub 2005 May 20.