Effects of resolvin D1 on inflammatory responses and oxidative stress of lipopolysaccharide-induced acute lung injury in mice  

作　　者：Yuan Ruixia Wang Lei Yao Chengyue Wu Qingping Marie Christelle Xie Wanli Zhang Xingcai Sun Wei Wang Huiqing Yao Shanglong 

机构地区：[1]Department of Anesthesia and Critical Care, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology,Wuhan, Hubei 430022, China

出　　处：《Chinese Medical Journal》2014年第5期803-809,共7页中华医学杂志（英文版）

基　　金：This study by grants from the National Natural Science Foundation of China

摘　　要：Background A variety of inflammatory mediators and effector cells participate together in acute lung injury,and lead to secondary injury that is due to an inflammatory cascade and secondary diffuse lung parenchyma injury.Inflammation is associated with an oxidative stress reaction,which is produced in the development of airway inflammation,and which has positive feedback on inflammation itself.Resolvin D1 can reduce the infiltration of neutrophils,regulate cytokine levels and reduce the inflammation reaction,and thereby promote the resolution of inflammation.The purpose of this study is to investigate the effects of resolvin D1 on an inflammatory response and oxidative stress during lipopolysaccharide （LPS）-induced acute lung injury.Methods LPS （3 mg/kg） was used to induce the acute lung injury model.Pretreatment resolvin D1 （100 ng/mouse） was given to mice 30 minutes before inducing acute lung injury.Mice were observed at 6 hours,12 hours,1 day,2 days,3 days,4 days and 7 days after LPS was administrated,then they were humanely sacrificed.We collected bronchoalveolar lavage fluid （BALF） and the lung tissues for further analysis.Paraffin section and HE staining of the lung tissues were made for histopathology observations.Parts of the lung tissues were evaluated for wet-to-dry （W/D） weight ratio.tumor necrosis factor （TNF）-α,inter leukin （IL）-1β,IL-10 and myeloperoxidase （MPO） were detected by enzyme-linked immunosorbent assay （ELISA）.A lipid peroxidation malondialdehyde （MDA） assay kit was used to detect MDA.A total superoxide dismutase assay kit with WST-1 was used to analyze superoxide dismutase （SOD）.We determined the apoptosis of neutrophils by Flow Cytometry.A real-time quantitative PCR Detecting System detected the expression of mRNA for heme oxygenase （HO）-1.Results Pretreatment with resolvin D1 reduced the pathological damage in the lung,decreased the recruitment of neutrophils and stimulated their apoptosis.It markedly decreased the expressions of TNF-α,Background A variety of inflammatory mediators and effector cells participate together in acute lung injury,and lead to secondary injury that is due to an inflammatory cascade and secondary diffuse lung parenchyma injury.Inflammation is associated with an oxidative stress reaction,which is produced in the development of airway inflammation,and which has positive feedback on inflammation itself.Resolvin D1 can reduce the infiltration of neutrophils,regulate cytokine levels and reduce the inflammation reaction,and thereby promote the resolution of inflammation.The purpose of this study is to investigate the effects of resolvin D1 on an inflammatory response and oxidative stress during lipopolysaccharide （LPS）-induced acute lung injury.Methods LPS （3 mg/kg） was used to induce the acute lung injury model.Pretreatment resolvin D1 （100 ng/mouse） was given to mice 30 minutes before inducing acute lung injury.Mice were observed at 6 hours,12 hours,1 day,2 days,3 days,4 days and 7 days after LPS was administrated,then they were humanely sacrificed.We collected bronchoalveolar lavage fluid （BALF） and the lung tissues for further analysis.Paraffin section and HE staining of the lung tissues were made for histopathology observations.Parts of the lung tissues were evaluated for wet-to-dry （W/D） weight ratio.tumor necrosis factor （TNF）-α,inter leukin （IL）-1β,IL-10 and myeloperoxidase （MPO） were detected by enzyme-linked immunosorbent assay （ELISA）.A lipid peroxidation malondialdehyde （MDA） assay kit was used to detect MDA.A total superoxide dismutase assay kit with WST-1 was used to analyze superoxide dismutase （SOD）.We determined the apoptosis of neutrophils by Flow Cytometry.A real-time quantitative PCR Detecting System detected the expression of mRNA for heme oxygenase （HO）-1.Results Pretreatment with resolvin D1 reduced the pathological damage in the lung,decreased the recruitment of neutrophils and stimulated their apoptosis.It markedly decreased the expressions of TNF-α,

关 键 词：acute lung injury resolvin D1 RESOLVINS oxidative stress 

分 类 号：Q555.7[生物学—生物化学] TQ926.1[轻工技术与工程—发酵工程]