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Emodin alleviates sepsis‐mediated lung injury via inhibition and reduction of NF‐kB and HMGB1 pathways mediated by SIRT1
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Emodin alleviates sepsis‐mediated lung injury via inhibition and reduction of NF‐kB and HMGB1 pathways mediated by SIRT1
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Journal Article
Emodin alleviates sepsis‐mediated lung injury via inhibition and reduction of NF‐kB and HMGB1 pathways mediated by SIRT1
2022
Overview
Inflammation plays an important role during sepsis, and excessive inflammation can result in organ damage, chronic inflammation, fibrosis, and scarring. The study aimed to investigate the specific mechanism of emodin by constructing in vivo and in vitro septic lung injury models via inhibition and reduction of NF‐kB and high mobility group box 1 (HMGB1) pathways. A cecal ligation and puncture (CLP) model was built for adult male Sprague–Dawley rats. Concentrations of TNF‐α, IL‐1β, and IL‐6 in bronchoalveolar lavage fluid were determined using commercially available ELISA kits. Hematoxylin and eosin staining was used for the right lung inferior lobes. Myeloperoxidase (MPO) activity of the lung tissue was detected by using the MPO kit. Murine alveolar epithelial cell line (MLE‐12) cells were used for flow cytometry and Western blot to analyze the apoptosis rate and protein expression. Emodin significantly decreased CLP‐induced cell apoptosis, upregulated expression of sirtuin 1 (SIRT1), and inhibited p‐p65/p65 and HMGB1. In lipopolysaccharide (LPS) treated cell model, emodin treatment markedly decreased LPS‐induced release of IL‐1, IL‐6, and tumor necrosis factor (TNF)‐α, inhibited LPS‐induced cell apoptosis and suppressed protein levels of P‐P65/P65 and HMGB1. However, science of SIRT1 reversed the above effects by treatment of emodin. In summarize, this study found that emodin can alleviate sepsis‐induced lung injury in vivo and in vitro through regulation of SIRT1.
Publisher
Wiley Publishing Asia Pty Ltd,John Wiley & Sons, Inc,Wiley
Subject
/ Acute Lung Injury - drug therapy
/ Acute Lung Injury - metabolism
/ Analysis
/ Animals
/ emodin
/ Enzyme-linked immunosorbent assay
/ HMGB1
/ HMGB1 Protein - antagonists & inhibitors
/ Interleukin-1beta - analysis
/ Male
/ Mice
/ NF-kappa B - antagonists & inhibitors
/ NF‐kB
/ Original
/ Proteins
/ Rats
/ Sepsis
/ SIRT1
/ Software
/ Transcription Factor RelA - metabolism
