PMID- 37844468 OWN - NLM STAT- MEDLINE DCOM- 20231102 LR - 20231102 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 124 IP - Pt B DP - 2023 Nov TI - Guggulsterone protects against lipopolysaccharide-induced inflammation and lethal endotoxemia via heme oxygenase-1. PG - 111073 LID - S1567-5769(23)01399-1 [pii] LID - 10.1016/j.intimp.2023.111073 [doi] AB - Guggulsterone (GS) is a phytosterol used to treat inflammatory diseases. Although many studies have examined the anti-inflammatory activities of GS, the detailed mechanisms of GS in lipopolysaccharide (LPS)-induced inflammation and endotoxemia have not yet been examined. Therefore, we investigated the anti-inflammatory effects of GS on LPS-induced inflammation. In murine peritoneal macrophages, the anti-inflammatory activity of GS was primarily mediated by heme oxygenase-1 (HO-1) induction. HO-1 induction by GS was mediated by GSH depletion and reactive oxygen species (ROS) production. The ROS generated by GS caused the phosphorylation of GSK3beta (ser9/21) and p38, leading to the translocation of nuclear factor erythroid-related factor 2 (Nrf2), which ultimately induced HO-1. In addition, GS pretreatment significantly inhibited inducible nitric oxide synthase (iNOS), iNOS-derived NO, and COX-2 protein and mRNA expression, and production of COX-derived prostaglandin PGE2, interleukin (IL)-1beta, IL-6, and tumor necrosis factor-alpha (TNF-alpha). In a mouse model of endotoxemia, GS treatment prolonged survival and inhibited the expression of inflammatory mediators, including IL-1beta, IL-6, and TNF-alpha. GS treatment also inhibited LPS-induced liver injury. These results suggest that GS-induced HO-1 could exert anti-inflammatory effects via ROS-dependent GSK (ser21/9)-p38 phosphorylation and nuclear translocation of Nrf2. CI - Copyright (c) 2023 Elsevier B.V. All rights reserved. FAU - Kweon, Bitna AU - Kweon B AD - Department of Pharmacology, School of Korean Medicine, Wonkwang University, Iksan, 54538 Jeonbuk, South Korea; Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, Iksan, 54538 Jeonbuk, South Korea. FAU - Kim, Dong-Uk AU - Kim DU AD - Department of Pharmacology, School of Korean Medicine, Wonkwang University, Iksan, 54538 Jeonbuk, South Korea; Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, Iksan, 54538 Jeonbuk, South Korea. FAU - Oh, Jin-Young AU - Oh JY AD - Department of Pharmacology, School of Korean Medicine, Wonkwang University, Iksan, 54538 Jeonbuk, South Korea; Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, Iksan, 54538 Jeonbuk, South Korea. FAU - Bae, Gi-Sang AU - Bae GS AD - Department of Pharmacology, School of Korean Medicine, Wonkwang University, Iksan, 54538 Jeonbuk, South Korea; Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, Iksan, 54538 Jeonbuk, South Korea. Electronic address: baegs888@wku.ac.kr. FAU - Park, Sung-Joo AU - Park SJ AD - Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, Iksan, 54538 Jeonbuk, South Korea; Department of Herbology, School of Korean Medicine, Wonkwang University, Iksan, 54538 Jeonbuk, South Korea. Electronic address: parksj08@wku.ac.kr. LA - eng PT - Journal Article DEP - 20231014 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Lipopolysaccharides) RN - A4PW148END (pregna-4,17-diene-3,16-dione) RN - 0 (NF-kappa B) RN - 0 (Interleukin-6) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 1.14.14.18 (Heme Oxygenase-1) RN - 0 (NF-E2-Related Factor 2) RN - 0 (Reactive Oxygen Species) RN - 0 (Anti-Inflammatory Agents) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type II) SB - IM MH - Animals MH - Mice MH - *Lipopolysaccharides/pharmacology MH - NF-kappa B/metabolism MH - Interleukin-6/metabolism MH - Tumor Necrosis Factor-alpha/metabolism MH - Heme Oxygenase-1/metabolism MH - NF-E2-Related Factor 2/metabolism MH - Reactive Oxygen Species/metabolism MH - *Endotoxemia/chemically induced/drug therapy MH - Inflammation/drug therapy/metabolism MH - Anti-Inflammatory Agents/pharmacology/therapeutic use MH - Nitric Oxide Synthase Type II/genetics/metabolism OTO - NOTNLM OT - Endotoxemia OT - Guggulsterone OT - Heme Oxygenase-1 (HO-1) OT - Lipopolysaccharide OT - Reactive Oxygen Species (ROS) COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/10/17 00:42 MHDA- 2023/11/02 12:47 CRDT- 2023/10/16 18:06 PHST- 2023/08/14 00:00 [received] PHST- 2023/10/10 00:00 [revised] PHST- 2023/10/10 00:00 [accepted] PHST- 2023/11/02 12:47 [medline] PHST- 2023/10/17 00:42 [pubmed] PHST- 2023/10/16 18:06 [entrez] AID - S1567-5769(23)01399-1 [pii] AID - 10.1016/j.intimp.2023.111073 [doi] PST - ppublish SO - Int Immunopharmacol. 2023 Nov;124(Pt B):111073. doi: 10.1016/j.intimp.2023.111073. Epub 2023 Oct 14.