PMID- 33029757 OWN - NLM STAT- MEDLINE DCOM- 20211109 LR - 20211109 IS - 1573-2576 (Electronic) IS - 0360-3997 (Linking) VI - 44 IP - 2 DP - 2021 Apr TI - Dimethyl Itaconate Alleviates the Inflammatory Responses of Macrophages in Sepsis. PG - 549-557 LID - 10.1007/s10753-020-01352-4 [doi] AB - Sepsis is an inflammatory disease characterized by dysregulation of inflammation. Macrophage-mediated inflammation has been implicated in the pathophysiology of sepsis. Itaconate is a metabolite produced in activated macrophages which has anti-inflammatory activities. In the present study, we investigated the potential effects of a cell-permeable itaconate derivative dimethyl itaconate on inflammation in sepsis. We established a lipopolysaccharide (LPS)-induced septic mouse model and administered dimethyl itaconate to the septic mice. The survival rate, serum level of pro-inflammatory cytokines, and lung pathology were evaluated. We also administered dimethyl itaconate to LPS-treated bone marrow-derived macrophages (BMDMs), and measured the cytokine production and Nrf2 expression. We also evaluated the effects of dimethyl itaconate on Nrf2-deficient mice. Administration of dimethyl itaconate enhanced survival rate, decreased serum level of TNF-alpha and IL-6, and ameliorated lung injury in septic mice. Dimethyl itaconate also suppressed LPS-induced production of TNF-alpha, IL-6, and NOS2 in BMDMs. Dimethyl itaconate activated Nrf2 and promoted the expression of Nrf2 and its downstream factor HO-1 and NQO-1. The regulatory activities of dimethyl itaconate on inflammatory cytokine production, mouse survival rate were abolished in septic Nrf2(-/-) mice. Dimethyl itaconate suppressed the inflammatory responses of macrophages in sepsis. FAU - Zhang, Sheng AU - Zhang S AD - Department of Emergency, Xingtai People's Hospital of Hebei Province, No. 16 Hongxing Street, Xingtai, 054031, Hebei, China. FAU - Jiao, Yalou AU - Jiao Y AD - Department of Reproductive Medicine, Xingtai People's Hospital of Hebei Province, No. 16 Hongxing Street, Xingtai, 054031, Hebei, China. FAU - Li, Chao AU - Li C AD - Department of Emergency, Xingtai People's Hospital of Hebei Province, No. 16 Hongxing Street, Xingtai, 054031, Hebei, China. FAU - Liang, Xiao AU - Liang X AD - Department of Emergency, Xingtai People's Hospital of Hebei Province, No. 16 Hongxing Street, Xingtai, 054031, Hebei, China. FAU - Jia, Huiqin AU - Jia H AD - Department of Emergency, Xingtai People's Hospital of Hebei Province, No. 16 Hongxing Street, Xingtai, 054031, Hebei, China. FAU - Nie, Zhelong AU - Nie Z AD - Department of Emergency, Xingtai People's Hospital of Hebei Province, No. 16 Hongxing Street, Xingtai, 054031, Hebei, China. FAU - Zhang, Yanwei AU - Zhang Y AUID- ORCID: 0000-0001-5718-8831 AD - Department of Emergency, Xingtai People's Hospital of Hebei Province, No. 16 Hongxing Street, Xingtai, 054031, Hebei, China. 0210130024@163.com. LA - eng PT - Journal Article DEP - 20201007 PL - United States TA - Inflammation JT - Inflammation JID - 7600105 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Biomarkers) RN - 0 (Cytokines) RN - 0 (Lipopolysaccharides) RN - 0 (Succinates) RN - 11JIB0YI93 (dimethyl itaconate) SB - IM MH - Animals MH - Anti-Inflammatory Agents/pharmacology/*therapeutic use MH - Biomarkers/blood MH - Blotting, Western MH - Cytokines/blood MH - Enzyme-Linked Immunosorbent Assay MH - Flow Cytometry MH - Inflammation/blood/*drug therapy/etiology/immunology MH - Lipopolysaccharides MH - Macrophages/*drug effects/immunology/metabolism MH - Mice MH - Mice, Inbred C57BL MH - Random Allocation MH - Reverse Transcriptase Polymerase Chain Reaction MH - Sepsis/blood/*drug therapy/etiology/immunology MH - Succinates/pharmacology/*therapeutic use OTO - NOTNLM OT - dimethyl itaconate OT - inflammation OT - macrophages OT - sepsis EDAT- 2020/10/09 06:00 MHDA- 2021/11/10 06:00 CRDT- 2020/10/08 05:35 PHST- 2020/06/18 00:00 [received] PHST- 2020/09/28 00:00 [accepted] PHST- 2020/09/17 00:00 [revised] PHST- 2020/10/09 06:00 [pubmed] PHST- 2021/11/10 06:00 [medline] PHST- 2020/10/08 05:35 [entrez] AID - 10.1007/s10753-020-01352-4 [pii] AID - 10.1007/s10753-020-01352-4 [doi] PST - ppublish SO - Inflammation. 2021 Apr;44(2):549-557. doi: 10.1007/s10753-020-01352-4. Epub 2020 Oct 7.