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- W2356413926 abstract "AIM:To investigate the role of epidermal growth factor receptor(EGFR)-p38 mitogen-activated protein kinase(MAPK) pathway in the expression of high mobility group box 1 protein(HMGB1) in the lung tissues of rats with ventilator-induced lung injury(VILI).METHODS: Thirty-two healthy Sprague-Dawley(SD) rats were randomly divided into 4 groups(n=8 each): group A,spontaneous breathing;group B,small tidal volume ventilation(VT=8 mL/kg);group C,high tidal volume ventilation(VT=40 mL/kg);group D,high tidal volume ventilation plus EGFR antagonist AG-1478.The rats in group B,group C and group D were mechanically ventilated for 4 h and then all animals were sacrificed.Total protein content and white blood cell(WBC) count in bronchoalveolar lavage fluid(BALF),the lung wet/dry weight ratio(W/D) and myeloperoxidase(MPO) activity were determined.The histological changes of lung tissues were observed by HE staining.The EGFR protein and mRNA expression,p38 MAPK activity and HMGB1 protein expression in the lung tissues were also detected.RESULTS: The inflammatory responses as evidenced by lung HE staining,total protein and WBC in BALF,the lung W/D and MPO activity were significantly higher in group C than those in group A(P0.05).The mRNA expression of EGFR,EGFR activity,p38 activity and HMGB1 protein level also significantly increased in group C(P0.05) as compared with group A.Significant decreases in the above indexes in group D were observed as compared with group C.CONCLUSION: High tidal volume ventilation induces acute lung injury,which may be related to up-regulation of HMGB1 expression through EGFR-p38 MAPK signal pathway." @default.
- W2356413926 created "2016-06-24" @default.
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- W2356413926 date "2013-01-01" @default.
- W2356413926 modified "2023-09-23" @default.
- W2356413926 title "EGFR-p38 MAPK signaling pathway is involved in expression of HMGB1 in pulmonary tissues of rats with ventilator-induced lung injury" @default.
- W2356413926 hasPublicationYear "2013" @default.
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