PMID- 34608599 OWN - NLM STAT- MEDLINE DCOM- 20220502 LR - 20220502 IS - 1559-0755 (Electronic) IS - 0257-277X (Linking) VI - 70 IP - 1 DP - 2022 Feb TI - Azilsartan attenuates lipopolysaccharide-induced acute lung injury via the Nrf2/HO-1 signaling pathway. PG - 97-105 LID - 10.1007/s12026-021-09240-1 [doi] AB - Acute lung injury (ALI) is a severe complication of sepsis and hemorrhagic shock with high morbidity. In the present study, the protective effect of Azilsartan on lipopolysaccharide (LPS)-induced ALI in mice was investigated to explore the potential therapeutic property of Azilsartan for the treatment of ALI. LPS was used to induce an ALI model in mice. Hematoxylin-eosin (HE) staining sections were then evaluated for the pathological state of lung tissues. Bronchoalveolar lavage fluid (BALF) protein concentration, wet/dry weight ratios of lung tissues, and pulmonary myeloperoxidase (MPO) activity were detected to determine the degree of pulmonary injury. The number of total cells, macrophages, and neutrophils in BALF were counted using a hemocytometer to illustrate the inflammatory cell infiltration. The lung function was monitored using a spirometer. The concentrations of interleukin-1beta (IL-1beta), monocyte chemoattractant protein-1 (MCP-1), and interleukin-8 (IL-8) were determined using enzyme-linked immunosorbent assay (ELISA). Oxidative stress was evaluated by the superoxide dismutase (SOD) activity, glutathione (GSH), and malondialdehyde (MDA) concentrations in the lung tissue. The expressions of nuclear erythroid 2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) were determined using Western blot analysis. Azilsartan therapy alleviated LPS-induced lung tissue damage, increased BALF protein concentration, lung wet to dry weight ratio, MPO activity, and macrophage and neutrophils infiltration. Also, Azilsartan ameliorated the production of inflammatory factors (IL-1beta, MCP-1, and IL-8). Azilsartan ameliorated LPS-impaired lung SOD activity, the GSH concentration, and the MDA concentration. Mechanistically, Azilsartan activated the LPS-impaired Nrf2/HO-1 signaling pathway. Azilsartan therapy attenuates LPS-induced ALI via the Nrf2/HO-1 signaling pathway. CI - (c) 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Zhang, Chengshi AU - Zhang C AD - Department of Respiratory, Punan Hospital, Pudong New Area, Shanghai, 200125, China. FAU - Zhao, Yunfeng AU - Zhao Y AD - Department of Respiratory, Punan Hospital, Pudong New Area, Shanghai, 200125, China. FAU - Yang, Xiaorong AU - Yang X AUID- ORCID: 0000-0002-6263-9104 AD - Department of Endocrinology, Punan Hospital, No.279, Linyi Road, Pudong New Area, Shanghai, 200125, China. yangxiaorong556@163.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20211004 PL - United States TA - Immunol Res JT - Immunologic research JID - 8611087 RN - 0 (Benzimidazoles) RN - 0 (Interleukin-8) RN - 0 (Lipopolysaccharides) RN - 0 (NF-E2-Related Factor 2) RN - 0 (Oxadiazoles) RN - EC 1.14.14.18 (Heme Oxygenase-1) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - F9NUX55P23 (azilsartan) SB - IM MH - *Acute Lung Injury/chemically induced/drug therapy MH - Animals MH - Benzimidazoles MH - Heme Oxygenase-1/metabolism/pharmacology/therapeutic use MH - Interleukin-8/metabolism MH - *Lipopolysaccharides/metabolism MH - Lung/pathology MH - Mice MH - NF-E2-Related Factor 2/metabolism/pharmacology/therapeutic use MH - Oxadiazoles MH - Signal Transduction MH - Superoxide Dismutase/metabolism/pharmacology/therapeutic use OTO - NOTNLM OT - Acute lung injury OT - Azilsartan OT - Inflammation OT - LPS OT - Nrf2 OT - Oxidative stress EDAT- 2021/10/06 06:00 MHDA- 2022/05/03 06:00 CRDT- 2021/10/05 06:45 PHST- 2021/07/12 00:00 [received] PHST- 2021/09/25 00:00 [accepted] PHST- 2021/10/06 06:00 [pubmed] PHST- 2022/05/03 06:00 [medline] PHST- 2021/10/05 06:45 [entrez] AID - 10.1007/s12026-021-09240-1 [pii] AID - 10.1007/s12026-021-09240-1 [doi] PST - ppublish SO - Immunol Res. 2022 Feb;70(1):97-105. doi: 10.1007/s12026-021-09240-1. Epub 2021 Oct 4.