ReferenceID 4357

Isoliquiritigenin exerts antioxidative and anti-inflammatory effects via activating the KEAP-1/Nrf2 pathway and inhibiting the NF-κB and NLRP3 pathways in carrageenan-induced pleurisy

Food Funct

Pleurisy refers to a pleural disease caused by pathogenic factors that stimulate the pleura associated with pleural inflammation and oxidative stress. Isoliquiritigenin (ISL), a flavonoid from the liquorice compound, pos

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Reference Id
4357
Evidence Id
20947
Core Evidence Id
20947
Source Reference Id
1975
Herb2 Reference Id
HBREF002772
Subject Paper Key
HBIN004214_32141447
Pubmed Id
32141447
Doi
10.1039/c9fo01984g
Paper Title
Isoliquiritigenin exerts antioxidative and anti-inflammatory effects via activating the KEAP-1/Nrf2 pathway and inhibiting the NF-κB and NLRP3 pathways in carrageenan-induced pleurisy
Paper Abstract
Pleurisy refers to a pleural disease caused by pathogenic factors that stimulate the pleura associated with pleural inflammation and oxidative stress. Isoliquiritigenin (ISL), a flavonoid from the liquorice compound, possesses antioxidative and anti-inflammatory properties. In the current study, we investigated the protective effects of ISL on carrageenan-induced pleurisy and lung injury in mice. The mice were intraperitoneally injected with ISL (30 mg kg-1) twice (each time interval of 12 h), followed by exposure to Car 1 h after the second dose of ISL. Our results indicated that ISL treatment significantly alleviated carrageenan-induced histopathological damage and increased levels of inflammatory cell exudation, protein leakage, and pro-inflammatory mediators. Meanwhile, ISL inhibited reactive oxygen species (ROS) generation, MDA and MPO formation, and SOD and GSH depletion induced by carrageenan. In addition, it decreased the GSSG level and GSSG-to-GSH ratio. In terms of the mechanism, ISL inhibited NOX2 and NOX4 levels, caused the dissociation of KEAP-1 and Nrf2, and activated the downstream genes HO-1, NQO1, GCLC and GCLM, thus decreasing oxidative stress. In addition, ISL exerts protective effects against inflammation by suppressing the NOD-like receptor protein 3 (NLRP3)/NF-kappaB pathway and the high levels of iNOS and COX-2. In summary, our results reinforce the hypothesis that ISL exerts protective effects on carrageenan-induced pleurisy and lung injury in a manner that can be attributed to Nrf2-mediated antioxidative activities and NLRP3/NF-kappaB-mediated anti-inflammatory activities.
Journal
Food Funct
Publish Year
2020
Experiment Subject
mouse
Experiment Type
Animal Experiment
Phenotype Related
Pleural Inflammation; Pleurisy; Pleural Disease; Carrageenan-; Lung Injury
Paper Title Cn
Paper Title En
Isoliquiritigenin exerts antioxidative and anti-inflammatory effects via activating the KEAP-1/Nrf2 pathway and inhibiting the NF-κB and NLRP3 pathways in carrageenan-induced pleurisy
Bilingual Status
semi_complete