PMID- 29466698 OWN - NLM STAT- MEDLINE DCOM- 20180709 LR - 20211204 IS - 0925-4439 (Print) IS - 0925-4439 (Linking) VI - 1864 IP - 5 Pt A DP - 2018 May TI - ERK1/2/mTOR/Stat3 pathway-mediated autophagy alleviates traumatic brain injury-induced acute lung injury. PG - 1663-1674 LID - S0925-4439(18)30068-1 [pii] LID - 10.1016/j.bbadis.2018.02.011 [doi] AB - Acute lung injury (ALI) is one of several complications in patients with traumatic brain injury (TBI). Autophagy is a primary homeostatic process that promotes cell survival under stress. Accumulating evidence implicates autophagy in the pathogenesis of ALI under various conditions. However, the role of autophagy in TBI-induced ALI remains unknown. The aim of this study was to adjust autophagy with pharmacological agents to determine its functional significance in TBI-induced ALI. Rats were preconditioned with autophagy promoter rapamycin or inhibitor 3-methyladenine before they were challenged with TBI. Extracellular signal-regulated kinase 1/2 (ERK1/2) inhibitor U0126, mechanistic target of rapamycin (mTOR) inhibitor rapamycin, and signal transducer and activator of transcription 3 (Stat3) inhibitor S31-201 were used to test the role of ERK1/2/mTOR/Stat3 signaling pathway in regulating autophagy. Autophagy is activated in lung tissues after TBI. Enhancement of autophagy suppressed apoptosis, inflammation and oxidative stress in lung tissues, which were activated after TBI, whereas inhibition of autophagy aggravated these critical pathological changes. Autophagy also improved TBI-induced impairment in pulmonary barrier function, oxygenation function and static compliance. Furthermore, TBI-induced autophagy was mediated by ERK1/2/mTOR/Stat3 pathway, which may serve to reduce ALI and improve pulmonary barrier function, oxygenation function and static compliance. These findings are important for the prevention and treatment of TBI-induced ALI. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Xu, Xiupeng AU - Xu X AD - Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China. FAU - Zhi, Tongle AU - Zhi T AD - Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China. FAU - Chao, Honglu AU - Chao H AD - Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China. FAU - Jiang, Kuan AU - Jiang K AD - Department of Neurosurgery, Yixing People's Hospital, Yixing, Jiangsu, China. FAU - Liu, Yinlong AU - Liu Y AD - Department of Neurosurgery, Suzhou Municipal Hospital, Suzhou, Jiangsu, China. FAU - Bao, Zhongyuan AU - Bao Z AD - Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China. FAU - Fan, Liang AU - Fan L AD - Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China. FAU - Wang, Dong AU - Wang D AD - Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China. FAU - Li, Zheng AU - Li Z AD - Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China. FAU - Liu, Ning AU - Liu N AD - Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China. FAU - Ji, Jing AU - Ji J AD - Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China. Electronic address: jijing@njmu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180218 PL - Netherlands TA - Biochim Biophys Acta Mol Basis Dis JT - Biochimica et biophysica acta. Molecular basis of disease JID - 101731730 RN - 0 (STAT3 Transcription Factor) RN - 0 (Stat3 protein, rat) RN - EC 2.7.1.1 (mTOR protein, rat) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) SB - IM EIN - Biochim Biophys Acta. 2018 Apr 12;:. PMID: 29656877 MH - Acute Lung Injury/etiology/*metabolism/pathology MH - Animals MH - Apoptosis MH - *Autophagy MH - Brain Injuries, Traumatic/complications/*metabolism/pathology MH - Lung/metabolism/pathology MH - *MAP Kinase Signaling System MH - Male MH - Mitogen-Activated Protein Kinase 3/antagonists & inhibitors/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - STAT3 Transcription Factor/*metabolism MH - TOR Serine-Threonine Kinases/antagonists & inhibitors/*metabolism OTO - NOTNLM OT - Acute lung injury OT - Apoptosis OT - Autophagy OT - Inflammation OT - Oxidative stress OT - Traumatic brain injury EDAT- 2018/02/22 06:00 MHDA- 2018/07/10 06:00 CRDT- 2018/02/22 06:00 PHST- 2017/08/07 00:00 [received] PHST- 2018/01/21 00:00 [revised] PHST- 2018/02/15 00:00 [accepted] PHST- 2018/02/22 06:00 [pubmed] PHST- 2018/07/10 06:00 [medline] PHST- 2018/02/22 06:00 [entrez] AID - S0925-4439(18)30068-1 [pii] AID - 10.1016/j.bbadis.2018.02.011 [doi] PST - ppublish SO - Biochim Biophys Acta Mol Basis Dis. 2018 May;1864(5 Pt A):1663-1674. doi: 10.1016/j.bbadis.2018.02.011. Epub 2018 Feb 18.