IL-32γ Inhibits Acetaminophen-Induced Acute Hepatotoxicity through Inactivation of NF-κB and Stat1 Signals. (September 2013)

• Record Type: Journal Article
• Authors: Kim, Y.R.; Jung, Y.S.; Lee, Y.H.; Hwang, C.J.; Hwang, J.L.; Seok, C.H.; Seong, H.C.; Yoon, N.Y.; Yeom, S.Y.; Han, S.B.; Yoon, D.Y.; Hong, J.T.
• Is Part Of: European journal of inflammation. Volume 11:Number 3(2013)
• Page Start: 663
• Page End: 674
• Publication Date: 2013-09
• Subjects: IL-32γ -- APAP -- hepatotoxicity -- NF-κB -- STAT1; Inflammation -- Periodicals; Anti-Inflammatory Agents -- therapeutic use -- Periodicals; Immunotherapy -- Periodicals; Inflammation -- Periodicals; Anti-inflammatory agents -- Periodicals; Immunotherapy -- Periodicals; Anti-inflammatory agents; Immunotherapy; Inflammation; Periodicals; 616.0473
• DOI: 10.1177/1721727X1301100310
• Languages: English
• ISSNs: 1721-727X

Abstract

Although several studies have shown physiological functions of interleukin (IL)-32, the role of IL-32 in liver has not yet been reported. This study was initiated to examine the effects of IL-32γ on APAP-induced acute hepatic failure in IL-32γ transgenic mice. IL-32Γ overexpressing and non-transgenic mice received 500 mg/kg Acetoaminophen (APAP) intraperitoneally. Serum alanine transaminase and aspartate transaminase were significantly lower in the APAP treated IL-32γ overexpressing mice compared with those APAP-treated non-transgenic. IL-32γ markedly reduced a restricted area of the necrosis and inflammation. APAP-induced reduced glutathione depletion, induction of nitric oxide and lipid peroxidation, and cytochrome P4502E1 expression was significantly lowered in the IL-32γ overexpressing mice. Elevation of Kupffer cells and natural killer cells by APAP were reduced in the IL-32γ overexpressing mice. The expression of IL-1α, IL-1rα, macrophage inflammatory protein-2, C-C motif chemokine ligand 5 and tissue inhibitor of metalloproteinase-1 was increased by APAP in non-transgenic mice, and were lowered in the IL-32γ overexpressing mice. Moreover, APAP-induced nuclear transcription factor-kappa B (NF-κB) and signal transducers and activators of transcription 1 (STAT1) activities were greatly lowered in the IL-32γ overexpressing mice. The results indicate that IL-32γ could effectively inhibit drug-induced hepatic failure, and reduce the number of cytotoxic immune cells and pro-inflammatory cytokine production through reduced activities of NF-κB and STAT1. This might be attributable to lowering APAP-induced liver toxicity in IL-32γ overexpressing mice.