PMID- 30565676 OWN - NLM STAT- MEDLINE DCOM- 20200408 LR - 20200408 IS - 1097-4652 (Electronic) IS - 0021-9541 (Linking) VI - 234 IP - 6 DP - 2019 Jun TI - Roles of Nrf2/HO-1 and HIF-1alpha/VEGF in lung tissue injury and repair following cerebral ischemia/reperfusion injury. PG - 7695-7707 LID - 10.1002/jcp.27767 [doi] AB - Cerebral ischemia/reperfusion injury (CIRI) leads to injury in distant organs, most commonly the lungs, although limited studies have examined self-protective mechanisms during CIRI-induced lung injury. Here, we investigated self-protective mechanisms that attenuate stress-related injury and promote the angiogenetic repair of epithelial function during CIRI-induced lung injury by measuring nuclear factor erythroid-related factor 2 (Nrf2) and hypoxia-inducible factor-1alpha (HIF-1alpha) levels. A CIRI model was established in male Sprague-Dawley rats by blocking the middle cerebral artery. Rats were divided into five subgroups based on the reperfusion time (6, 12, 24, 48, and 72 hr). Lung injury was assessed using a semiquantitative score and a thiobarbituric acid-based method of determining malonaldehyde production. Lung tissue angiogenesis was detected by CD34 and CD31 immunolabeling. Changes in Nrf2, heme oxygenase-1 (HO-1), HIF-1alpha, vascular-endothelial growth factor (VEGF), phosphatidylinositol 3-kinase (PI3K), extracellular-regulated kinase1/2 (ERK1/2), and phospho-ERK1/2 ( p-ERK1/2) protein- and mRNA-expression levels were measured by immunohistochemistry and reverse transcription polymerase chain reactions, respectively. Oxidative stress induced by cerebral ischemia/reperfusion (CI/R) caused lung injury. Expression of the Nrf2/HO-1 antioxidative stress pathway in lung tissues increased following CI/R, peaking after 24 hr. PI3K, ERK, and p-ERK1/2, which act upstream of Nrf2/HO-1, were expressed at higher levels in the CI/R-model group, consistent with the general trends observed for Nrf2/HO-1. Within 72 hr post-CI/R, HIF-1alpha, and VEGF expression significantly increased versus the sham group. Thus, during CIRI-induced lung injury, the body may upregulate antioxidative stress activities and promote angiogenesis to repair the endothelial barrier through the Nrf2/HO-1 and HIF-1alpha/VEGF signaling pathways, enabling self-protection. CI - (c) 2018 Wiley Periodicals, Inc. FAU - Fan, Jianhua AU - Fan J AD - Department of Neurology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China. FAU - Lv, Hui AU - Lv H AD - Department of Neurology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China. FAU - Li, Jie AU - Li J AD - Department of Neurology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China. FAU - Che, Yuqin AU - Che Y AD - Department of Neurology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China. FAU - Xu, Baoning AU - Xu B AD - Department of Thoracic Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China. FAU - Tao, Zuo AU - Tao Z AD - Department of China Medical University, Shenyang, China. FAU - Jiang, Wenjun AU - Jiang W AUID- ORCID: 0000-0002-8880-2117 AD - Department of Thoracic Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20181122 PL - United States TA - J Cell Physiol JT - Journal of cellular physiology JID - 0050222 RN - 0 (Hypoxia-Inducible Factor 1, alpha Subunit) RN - 0 (NF-E2-Related Factor 2) RN - 0 (Vascular Endothelial Growth Factor A) RN - EC 1.14.14.18 (Heme Oxygenase-1) SB - IM MH - Animals MH - Brain Ischemia/complications/metabolism MH - Heme Oxygenase-1/*metabolism MH - Hypoxia-Inducible Factor 1, alpha Subunit/metabolism MH - Lung/metabolism MH - Lung Injury/*metabolism MH - Male MH - NF-E2-Related Factor 2/metabolism MH - Oxidative Stress/physiology MH - Phosphatidylinositol 3-Kinases/metabolism MH - Rats, Sprague-Dawley MH - Reperfusion Injury/*metabolism MH - Vascular Endothelial Growth Factor A/*metabolism OTO - NOTNLM OT - acute lung injury OT - angiogenesis OT - antioxidative stress OT - cerebral ischemia/reperfusion injury OT - nuclear factor erythroid-related factor 2 EDAT- 2018/12/20 06:00 MHDA- 2020/04/09 06:00 CRDT- 2018/12/20 06:00 PHST- 2018/05/10 00:00 [received] PHST- 2018/10/30 00:00 [accepted] PHST- 2018/12/20 06:00 [pubmed] PHST- 2020/04/09 06:00 [medline] PHST- 2018/12/20 06:00 [entrez] AID - 10.1002/jcp.27767 [doi] PST - ppublish SO - J Cell Physiol. 2019 Jun;234(6):7695-7707. doi: 10.1002/jcp.27767. Epub 2018 Nov 22.