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Zhang Y, Li Y, Wang Q, Zheng D, Feng X, Zhao W, Cai L, Zhang Q, Xu H, Fu H. Attenuation of hepatic ischemia‑reperfusion injury by adipose stem cell‑derived exosome treatment via ERK1/2 and GSK‑3β signaling pathways. Int J Mol Med 2022; 49:13. [PMID: 34878156 PMCID: PMC8711591 DOI: 10.3892/ijmm.2021.5068] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 10/14/2021] [Indexed: 11/23/2022] Open
Abstract
Exosomes are an emerging therapeutic tool for the treatment of tissue injuries. In the present study, the protective effect of isolated exosomes from adipose‑derived stem cells (ADSCs‑exo) against hepatic ischemia‑reperfusion (I/R) injury was explored. Hepatic I/R injury was achieved by inducing ischemia for 60 min followed by reperfusion for 2 and 6 h. Pre‑treatment with ADSCs‑exo revealed a significant reduction in necrosis and apoptosis in liver tissue induced by I/R injury. Hypoxic oxidative stress was managed by exosome‑mediated reduced reactive oxygen species and increased superoxide dismutase that in turn protected mitochondrial damage and apoptosis. Reduction in inflammatory mediators such as IL‑1β and TNF‑α was also observed and protection of hepatocytes from I/R injury was evidenced by a significant decrease in biochemical markers of liver damage (alanine transaminase, aspartate transaminase and lactate dehydrogenase). Exosomal prostaglandin E2 (PGE2)‑mediated ERK1/2 and GSK‑3β phosphorylation were revealed to increase Bcl‑2 and decrease Bax expression with mitochondrial permeability transition pore‑inhibition which may be considered a prime mechanism of exosome‑mediated hepatoprotection. In conclusion, our results indicated that ADSCs‑exo pre‑treatment is effective in protecting liver I/R injury.
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Affiliation(s)
- Yaqing Zhang
- Department of Anesthesiology, Changzheng Hospital, Naval Medical University, Shanghai 200003, P.R. China
| | - Yonghua Li
- Department of Anesthesiology, Changzheng Hospital, Naval Medical University, Shanghai 200003, P.R. China
| | - Qilong Wang
- Department of Anesthesiology, Changzheng Hospital, Naval Medical University, Shanghai 200003, P.R. China
| | - Dongyu Zheng
- Department of Anesthesiology, Changzheng Hospital, Naval Medical University, Shanghai 200003, P.R. China
| | - Xue Feng
- Department of Liver Surgery and Liver Transplantation Center, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Wei Zhao
- Department of Obstetrics and Gynecology, Inner Mongolia Autonomous Region Corps Hospital of Chinese People's Armed Police Force, Hohhot, Inner Mongolia Autonomous Region 010040, P.R. China
| | - Linlin Cai
- Department of Anesthesiology, Wuxi People's Hospital, Wuxi, Jiangsu 214023, P.R. China
| | - Qingqing Zhang
- Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai 200433, P.R. China
| | - Haitao Xu
- Department of Anesthesiology, Changzheng Hospital, Naval Medical University, Shanghai 200003, P.R. China
| | - Hailong Fu
- Department of Anesthesiology, Changzheng Hospital, Naval Medical University, Shanghai 200003, P.R. China
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Rezq S, Hassan R, Mahmoud MF. Rimonabant ameliorates hepatic ischemia/reperfusion injury in rats: Involvement of autophagy via modulating ERK- and PI3K/AKT-mTOR pathways. Int Immunopharmacol 2021; 100:108140. [PMID: 34536742 DOI: 10.1016/j.intimp.2021.108140] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 08/11/2021] [Accepted: 09/05/2021] [Indexed: 02/07/2023]
Abstract
Hepatic ischemia/reperfusion (HIR), which can result in severe liver injury and dysfunction, is usually associated with autophagy and endocannabinoid system derangements. Whether or not the modulation of the autophagic response following HIR injury is involved in the hepatoprotective effect of the cannabinoid receptor 1(CB1R) antagonist rimonabant remains elusive and is the aim of the current study. Rats pre-treated with rimonabant (3 mg/kg) or vehicle underwent 30 min hepatic ischemia followed by 6 hrs. reperfusion. Liver injury was evaluated by serum ALT, AST, bilirubin (total and direct levels) and histopathological examination. The inflammatory, profibrotic and oxidative responses were investigated by assessing hepatic tumor necrosis factor α (TNFα), nuclear factor kappa B (NF-κB), transforming growth factor (TGF-β), lipid peroxidation and reduced glutathione. The hepatic levels of CB1R and autophagic markers p62, Beclin-1, and LC3 as well as the autophagic signaling inhibitors ERK1/2, PI3K, Akt and mTOR were also determined. Rimonabant significantly attenuated HIR-induced increases in hepatic injury, inflammation, profibrotic responses and oxidative stress and improved the associated pathological features. Rimonabant modulated the expression of p62, Beclin-1, and LC3, down-regulated CB1R, and dcreased pERK1/2, PI3K, Akt, and mTOR activities. The current study suggests that rimonabant can protect the liver from IR injury at least in part by inducing autophagy, probably by modulating ERK- and/or PI3K/AKT-mTOR signaling.
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Affiliation(s)
- Samar Rezq
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Egypt.
| | - Reham Hassan
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Egypt
| | - Mona F Mahmoud
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Egypt
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Zhao X, Li S, Mo Y, Li R, Huang S, Zhang A, Ni X, Dai Q, Wang J. DCA Protects against Oxidation Injury Attributed to Cerebral Ischemia-Reperfusion by Regulating Glycolysis through PDK2-PDH-Nrf2 Axis. Oxid Med Cell Longev 2021; 2021:5173035. [PMID: 34712383 PMCID: PMC8548159 DOI: 10.1155/2021/5173035] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/06/2021] [Accepted: 10/04/2021] [Indexed: 12/19/2022]
Abstract
Cerebral ischemic stroke (IS) is still a difficult problem to be solved; energy metabolism failure is one of the main factors causing mitochondrion dysfunction and oxidation stress damage within the pathogenesis of cerebral ischemia, which produces considerable reactive oxygen species (ROS) and opens the blood-brain barrier. Dichloroacetic acid (DCA) can inhibit pyruvate dehydrogenase kinase (PDK). Moreover, DCA has been indicated with the capability of increasing mitochondrial pyruvate uptake and promoting oxidation of glucose in the course of glycolysis, thereby improving the activity of pyruvate dehydrogenase (PDH). As a result, pyruvate flow is promoted into the tricarboxylic acid cycle to expedite ATP production. DCA has a protective effect on IS and brain ischemia/reperfusion (I/R) injury, but the specific mechanism remains unclear. This study adopted a transient middle cerebral artery occlusion (MCAO) mouse model for simulating IS and I/R injury in mice. We investigated the mechanism by which DCA regulates glycolysis and protects the oxidative damage induced by I/R injury through the PDK2-PDH-Nrf2 axis. As indicated from the results of this study, DCA may improve glycolysis, reduce oxidative stress and neuronal death, damage the blood-brain barrier, and promote the recovery of oxidative metabolism through inhibiting PDK2 and activating PDH. Additionally, DCA noticeably elevated the neurological score and reduced the infarct volume, brain water content, and necrotic neurons. Moreover, as suggested from the results, DCA elevated the content of Nrf2 as well as HO-1, i.e., the downstream antioxidant proteins pertaining to Nrf2, while decreasing the damage of BBB and the degradation of tight junction proteins. To simulate the condition of hypoxia and ischemia in vitro, HBMEC cells received exposure to transient oxygen and glucose deprivation (OGD). The DCA treatment is capable of reducing the oxidative stress and blood-brain barrier of HBMEC cells after in vitro hypoxia and reperfusion (H/R). Furthermore, this study evidenced that HBMEC cells could exhibit higher susceptibility to H/R-induced oxidative stress after ML385 application, the specific inhibitor of Nrf2. Besides, the protection mediated by DCA disappeared after ML385 application. To sum up, as revealed from the mentioned results, DCA could exert the neuroprotective effect on oxidative stress and blood-brain barrier after brain I/R injury via PDK2-PDH-Nrf2 pathway activation. Accordingly, the PDK2-PDH-Nrf2 pathway may play a key role and provide a new pharmacology target in cerebral IS and I/R protection by DCA.
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Affiliation(s)
- Xiaoyong Zhao
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang 261021, China
| | - Shan Li
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Yunchang Mo
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Ruru Li
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Shaoyi Huang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Anqi Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Xuqing Ni
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Qinxue Dai
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Junlu Wang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
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Jiang T, Liu T, Deng X, Ding W, Yue Z, Yang W, Lv X, Li W. Adiponectin ameliorates lung ischemia-reperfusion injury through SIRT1-PINK1 signaling-mediated mitophagy in type 2 diabetic rats. Respir Res 2021; 22:258. [PMID: 34602075 PMCID: PMC8489101 DOI: 10.1186/s12931-021-01855-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 09/29/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Diabetes mellitus (DM) is a key contributing factor to poor survival in lung transplantation recipients. Mitochondrial dysfunction is recognized as a critical mediator in the pathogenesis of diabetic lung ischemia-reperfusion (IR) injury. The protective effects of adiponectin have been demonstrated in our previous study, but the underlying mechanism remains unclear. Here we demonstrated an important role of mitophagy in the protective effect of adiponectin during diabetic lung IR injury. METHODS High-fat diet-fed streptozotocin-induced type 2 diabetic rats were exposed to adiponectin with or without administration of the SIRT1 inhibitor EX527 following lung transplantation. To determine the mechanisms underlying the action of adiponectin, rat pulmonary microvascular endothelial cells were transfected with SIRT1 small-interfering RNA or PINK1 small-interfering RNA and then subjected to in vitro diabetic lung IR injury. RESULTS Mitophagy was impaired in diabetic lungs subjected to IR injury, which was accompanied by increased oxidative stress, inflammation, apoptosis, and mitochondrial dysfunction. Adiponectin induced mitophagy and attenuated subsequent diabetic lung IR injury by improving lung functional recovery, suppressing oxidative damage, diminishing inflammation, decreasing cell apoptosis, and preserving mitochondrial function. However, either administration of 3-methyladenine (3-MA), an autophagy antagonist or knockdown of PINK1 reduced the protective action of adiponectin. Furthermore, we demonstrated that APN affected PINK1 stabilization via the SIRT1 signaling pathway, and knockdown of SIRT1 suppressed PINK1 expression and compromised the protective effect of adiponectin. CONCLUSION These data demonstrated that adiponectin attenuated reperfusion-induced oxidative stress, inflammation, apoptosis and mitochondrial dysfunction via activation of SIRT1- PINK1 signaling-mediated mitophagy in diabetic lung IR injury.
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Affiliation(s)
- Tao Jiang
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Tianhua Liu
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Xijin Deng
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Wengang Ding
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Ziyong Yue
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Wanchao Yang
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Xiangqi Lv
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Wenzhi Li
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China.
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Zhang T, Chen X, Qu Y, Ding Y. Curcumin Alleviates Oxygen-Glucose-Deprivation/Reperfusion-Induced Oxidative Damage by Regulating miR-1287-5p/LONP2 Axis in SH-SY5Y Cells. Anal Cell Pathol (Amst) 2021; 2021:5548706. [PMID: 34589382 PMCID: PMC8476263 DOI: 10.1155/2021/5548706] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 07/30/2021] [Accepted: 08/07/2021] [Indexed: 02/07/2023] Open
Abstract
Oxidative stress-induced neuronal damage is a main cause of ischemia/reperfusion injury. Curcumin (Cur), the principal constituent extracted from dried rhizomes of Curcuma longa L. (turmeric), exhibits excellent antioxidant effects. Previous studies have indicated that miR-1287-5p was downregulated in patients with ischemic stroke. Additionally, we predicted that Lon Peptidase 2, Peroxisomal (LONP2), which is involved in oxidative stress regulation, is targeted by miR-1287-5p. The aim of the current study is to investigate the effect of Cur on ischemia/reperfusion damage and its underlying mechanism. To mimic ischemia/reperfusion damage environment, SH-SY5Y cells were subjected to oxygen-glucose-deprivation/reperfusion (OGD/R). OGD/R treatment downregulated miR-1287-5p and upregulated LONP2 in SH-SY5Y cells, but Cur alleviated OGD/R-induced oxidative damage and reversed the effect of OGD/R on the expression of miR-1287-5p and LONP2. Furthermore, we confirmed the interactive relationship between miR-1287-5p and LONP2 (negative regulation). We revealed that miR-1287-5p overexpression alleviated OGD/R-induced oxidative damage alleviation, similar to the effect of Cur. MiR-1287-5p inhibition accentuated OGD/R-induced oxidative damage in SH-SY5Y cells, which was reversed by Cur. The expression of LONP2 in OGD/R-treated SH-SY5Y cells was decreased by miR-1287-5p overexpression and increased by miR-1287-5p inhibition, and Cur counteracted the increase in LONP2 expression induced by miR-1287-5p inhibition. In conclusion, we suggest that Cur alleviates OGD/R-induced oxidative damage in SH-SY5Y cells by regulating the miR-1287-5p/LONP2 axis. The findings provide a theoretical basis for the clinical application of curcumin.
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Affiliation(s)
- Teng Zhang
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Provincial Hospital Traditional Chinese Medicine, Wuhan 430074, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan 430074, China
| | - Xiaomin Chen
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Provincial Hospital Traditional Chinese Medicine, Wuhan 430074, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan 430074, China
| | - Yueqing Qu
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Provincial Hospital Traditional Chinese Medicine, Wuhan 430074, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan 430074, China
| | - Yanbing Ding
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Provincial Hospital Traditional Chinese Medicine, Wuhan 430074, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan 430074, China
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Hayes HV, Wolfe V, O’Connor M, Levinsky NC, Piraino G, Zingarelli B. Deficiency of AMPKα1 Exacerbates Intestinal Injury and Remote Acute Lung Injury in Mesenteric Ischemia and Reperfusion in Mice. Int J Mol Sci 2021; 22:9911. [PMID: 34576076 PMCID: PMC8468919 DOI: 10.3390/ijms22189911] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/04/2021] [Accepted: 09/08/2021] [Indexed: 01/13/2023] Open
Abstract
Mesenteric ischemia and reperfusion (I/R) injury can ensue from a variety of vascular diseases and represents a major cause of morbidity and mortality in intensive care units. It causes an inflammatory response associated with local gut dysfunction and remote organ injury. Adenosine monophosphate-activated protein kinase (AMPK) is a crucial regulator of metabolic homeostasis. The catalytic α1 subunit is highly expressed in the intestine and vascular system. In loss-of-function studies, we investigated the biological role of AMPKα1 in affecting the gastrointestinal barrier function. Male knock-out (KO) mice with a systemic deficiency of AMPKα1 and wild-type (WT) mice were subjected to a 30 min occlusion of the superior mesenteric artery. Four hours after reperfusion, AMPKα1 KO mice exhibited exaggerated histological gut injury and impairment of intestinal permeability associated with marked tissue lipid peroxidation and a lower apical expression of the junction proteins occludin and E-cadherin when compared to WT mice. Lung injury with neutrophil sequestration was higher in AMPKα1 KO mice than WT mice and paralleled with higher plasma levels of syndecan-1, a biomarker of endothelial injury. Thus, the data demonstrate that AMPKα1 is an important requisite for epithelial and endothelial integrity and has a protective role in remote organ injury after acute ischemic events.
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Affiliation(s)
- Hannah V. Hayes
- Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA; (H.V.H.); (N.C.L.)
| | - Vivian Wolfe
- Division of Critical Care Medicine, Cincinnati Children’s Hospital Medical Center, and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA; (V.W.); (M.O.); (G.P.)
| | - Michael O’Connor
- Division of Critical Care Medicine, Cincinnati Children’s Hospital Medical Center, and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA; (V.W.); (M.O.); (G.P.)
| | - Nick C. Levinsky
- Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA; (H.V.H.); (N.C.L.)
| | - Giovanna Piraino
- Division of Critical Care Medicine, Cincinnati Children’s Hospital Medical Center, and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA; (V.W.); (M.O.); (G.P.)
| | - Basilia Zingarelli
- Division of Critical Care Medicine, Cincinnati Children’s Hospital Medical Center, and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA; (V.W.); (M.O.); (G.P.)
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Ma H, Yang B, Yu L, Gao Y, Ye X, Liu Y, Li Z, Li H, Li E. Sevoflurane protects the liver from ischemia-reperfusion injury by regulating Nrf2/HO-1 pathway. Eur J Pharmacol 2021; 898:173932. [PMID: 33631180 DOI: 10.1016/j.ejphar.2021.173932] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 01/27/2021] [Accepted: 01/29/2021] [Indexed: 02/06/2023]
Abstract
We aimed to investigate the role and mechanism of sevoflurane (SEV) preconditioning in liver ischemia-reperfusion (I/R) injury. In vivo, rats were randomly divided into Sham group, I/R rat model group, I/R + SEV group and SEV group. In vitro, hypoxia-reoxygenation (H/R) cell model were established. Hematoxylin-Eosin (H&E) and TUNEL assay were used to evaluate the degree of tissue damage and detect apoptosis in rats, respectively. HO-1, nuclear Nrf2 and cytosolic Nrf2 expressions were detected by immunohistochemical staining, Western blot analysis and quantitative real-time PCR (qRT-PCR), respectively. Contents of Lactate dehydrogenase (LDH), malondialdehyde (MDA), and reactive oxygen species (ROS) were determined by corresponding kits. Inflammatory factor levels, cell viability, apoptosis were detected by enzyme-linked immunosorbent assay (ELISA), MTT assay, and flow cytometry, respectively.In the I/R group, liver damage was severe, apoptosis-positive cells were increased, HO-1 and nuclear Nrf2 expressions were increased, and cytosolic Nrf2 expression was decreased. After SEV pretreatment, the degree of liver injury and apoptosis in rats were significantly reduced, HO-1 and nuclear Nrf2 expressions were increased significantly, and cytosolic Nrf2 expression was decreased. 4% SEV had the best mitigating effect on H/R-induced liver cell damage, as evidenced by reduced contents of LDH and MDA, decreased inflammatory factors, a lowered apoptosis rate, inhibited ROS production, effectively promoted Nrf2 nucleation, and activated Nrf/HO-1 pathway. ML385 pretreatment significantly inhibited the effect of SEV on hepatocytes.Sevoflurane protects the liver from ischemia-reperfusion injury by regulating the Nrf2/HO-1 pathway.
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Affiliation(s)
- Hongyan Ma
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, No.23, Youzheng Street, Nangang District, Harbin, Heilongjiang, 150001, China
| | - Baoyi Yang
- Department of Neursurgery, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, No.26, Heping Road, Dongli District, Harbin, Heilongjiang, 150040, China
| | - Lu Yu
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, No.23, Youzheng Street, Nangang District, Harbin, Heilongjiang, 150001, China
| | - Yang Gao
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, No.23, Youzheng Street, Nangang District, Harbin, Heilongjiang, 150001, China
| | - Xiangmei Ye
- Laboratory of Hemooncology, The First Affiliated Hospital of Harbin Medical University, No.23, Youzheng Street, Nangang District, Harbin, Heilongjiang, 150001, China
| | - Ying Liu
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, No.23, Youzheng Street, Nangang District, Harbin, Heilongjiang, 150001, China
| | - Zhengtian Li
- Department of Tumor Endoscopic Surgery, The First Affiliated Hospital of Harbin Medical University, No.23, Youzheng Street, Nangang District, Harbin, Heilongjiang, 150001, China
| | - Hulun Li
- Department of Neurobiology, Harbin Medical University, No.194, Xuefu Road, Harbin, Heilongjiang, 150001, China
| | - Enyou Li
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, No.23, Youzheng Street, Nangang District, Harbin, Heilongjiang, 150001, China.
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Tuncer M, Pehlivanoglu B, Sürücü SH, Isbir T. Melatonin Improves Reduced Activities of Membrane ATPases and Preserves Ultrastructure of Gray and White Matter in the Rat Brain Ischemia/Reperfusion Model. Biochemistry (Mosc) 2021; 86:540-550. [PMID: 33993861 DOI: 10.1134/s0006297921050035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 03/22/2021] [Accepted: 03/28/2021] [Indexed: 06/12/2023]
Abstract
Ischemia/reperfusion (I/R) is among the most frequent neurological problems and early intervention to limit the damage is crucial in decreasing mortality and morbidity. Based on reports regarding beneficial effects of melatonin, we investigated its impact on Na+-K+/Mg2+ ATPase and Ca2+/Mg2+ ATPase activities and ultrastructure of gray and white matter in the rat forebrain I/R model. Adult Wistar-albino rats (n = 78), were randomized into control, ischemia (I), ischemia/reperfusion (I/R), low (I/R + melatonin 400 µg/kg), moderate (I/R + melatonin 1200 µg/kg), and high (I/R + melatonin 2400 µg/kg) dose melatonin. Two-vessel occlusion combined with hypotension (15 min) induced ischemia and reperfusion (75 min) achieved by blood reinfusion were performed. Activities of the membrane-bound enzyme, brain malondialdehyde levels, and brain matter ultrastructure were examined in frontoparietal cortices. Melatonin lowered production of malondialdehyde in a dose-dependently. The enzyme activities attenuated under I and I/R, improved with melatonin treatment. I and I/R severely disturbed gray and white matter morphology. Melatonin, in all applied doses, decreased ultrastructural damages in both gray and white matter. Favorable effects of melatonin can be attributed to its antioxidant properties suggesting that it could be a promising neuroprotective agent against I/R injury being effective both for gray and white matter due to favorable biological properties.
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Affiliation(s)
- Meltem Tuncer
- Department of Physiology, Hacettepe University Faculty of Medicine, Ankara, 06100, Turkey.
| | - Bilge Pehlivanoglu
- Department of Physiology, Hacettepe University Faculty of Medicine, Ankara, 06100, Turkey
| | - Selçuk H Sürücü
- Department of Anatomy, Koç University School of Medicine, Istanbul, 34450, Turkey
| | - Turgay Isbir
- Department of Medical Biology, Faculty of Medicine, Yeditepe University, Istanbul, 34755, Turkey
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Kilic F, Eskitascioglu T, Aydin A, Cakici OU. Ameliorating Effects of β-Glucan on Epigastric Artery Island Flap Ischemia-Reperfusion Injury. J Surg Res 2021; 261:282-292. [PMID: 33477077 DOI: 10.1016/j.jss.2020.12.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 11/27/2020] [Accepted: 12/16/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND Ischemia-reperfusion injury has been one of the culprits of tissue injury and flap loss after island flap transpositions. Thus, significant research has been undertaken to study how to prevent or decrease the spread of ischemia-reperfusion injury. Preventive effects of β-glucan on ischemia-reperfusion injury in the kidney, lung, and small intestine have previously been reported. In this study, we present the ameliorating effects of β-glucan on ischemia-reperfusion injury using the epigastric artery island-flap in rats. MATERIALS AND METHODS Thirty Wistar-Albino rats were equally divided into three groups: sham, experimental model, and treatment groups. In the sham group, an island flap was elevated and sutured back to the original position without any ischemia. In the experimental model group, the same-sized flap was elevated and sutured back with 8 h of ischemia and consequent 12 h of reperfusion. In the treatment group, 50 mg per kilogram β-glucan was administered to the rats using an orogastric tube for 10 d before the experiment. The same-sized flap is elevated and sutured back to its original position with 8 h of ischemia and 12 h of consequent reperfusion in the treatment group. Tissue biopsies were taken on the first day of the experimental surgery. Tissue neutrophil aggregation and vascular responses were evaluated by histological examinations. Tissue oxidant and antioxidant enzyme levels are evaluated biochemically after tissue homogenization. Topographic follow-up and evaluation of the flaps were maintained, and photographs were taken on the first and seventh day of the experimental surgery. RESULTS Topographic flap survival was significantly better in the β-glucan administered group. The neutrophil number, malondialdehyde, and myeloperoxidase levels were significantly lower while glutathione peroxidase and superoxide dismutase levels were significantly higher in the β-glucan administered group respective to the experimental model group. CONCLUSIONS Based on the results of our study, we can conclude that β-glucan is protective against ischemia-reperfusion injury. Our study presents the first experimental evidence of such an effect on skin island flaps.
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Affiliation(s)
- Fatih Kilic
- Department of Aesthetic Plastic and Reconstructive Surgery, Abdurrahman Yurtaslan Oncology Education and Research Hospital, Ankara, Turkey
| | - Teoman Eskitascioglu
- Department of Aesthetic Plastic and Reconstructive Surgery, Memorial Hospital, Kayseri, Turkey
| | - Ahmet Aydin
- Department of Aesthetic Plastic and Reconstructive Surgery, Bagcilar Medipol Mega University Hospital, Istanbul, Turkey
| | - Ozer Ural Cakici
- Department of Urology, Yuksek Ihtisas University, Ankara, Turkey.
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10
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Mohammed RA, El-Yamany MF, Abdel-Rahman AA, Nassar NN, Al-Shorbagy MY. Role of pERK1/2-NFκB signaling in the neuroprotective effect of thalidomide against cerebral ischemia reperfusion injury in rats. Eur J Pharmacol 2021; 895:173872. [PMID: 33465355 DOI: 10.1016/j.ejphar.2021.173872] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 01/07/2021] [Accepted: 01/11/2021] [Indexed: 01/08/2023]
Abstract
In the present investigation, we tested the hypothesis that suppression of the phospho-extracellular signal regulated kinase (pERK1/2)-nuclear factor kappa (NFκ)-B signaling, subsequent to tumor necrosis factor-α (TNF-α) inhibition, underlies thalidomide (TLM) mediated neuroprotection. Male Wistar rats (250-280 g) were divided into five groups: (1) sham; (2) negative control receiving TLM (5μg/1μl/site) and 3 groups of ischemia-reperfusion (IR) injury rats pretreated with: (3) vehicle (DMSO 100%); (4) TLM (5μg/1μl/site) or (5) PD98059 (0.16μg/1μl/site). IR rats were subjected to occlusion of both common carotid arteries for 45 min followed by reperfusion for 24 h. Drugs and/or vehicles were administered by unilateral intrahippocampal injection after removal of the carotid occlusion and at the beginning of the reperfusion period. IR rats exhibited significant infarct size, histopathological damage, memory impairment, motor incoordination and hyperactivity. Unilateral intra-hippocampal TLM ameliorated these behavioral deficits along with the following ex vivo hippocampal effects: (i) abrogation of the IR-evoked elevations in hippocampal TNF-α, pERK1/2, NFκB, BDNF, iNOS contents and (ii) partial restoration of the reduced anti-inflammatory cytokine IL-10 and p-nNOS S852. These neurochemical effects, which were replicated by the pERK1/2 inhibitor PD98059, likely underlie the reductions in c-Fos and caspase-3 levels as well as the anti-apoptotic effect of TLM in the IR model. These results suggest a crucial anti-inflammatory role for pERK1/2 inhibition in the salutary neuronal and behavioral effects of TLM in a model of brain IR injury.
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Affiliation(s)
- Reham A Mohammed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt.
| | - Mohammed F El-Yamany
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Abdel A Abdel-Rahman
- Department of Pharmacology and Toxicology, Brody School of Medicine, East Carolina University, Greenville, NC, 27834, USA
| | - Noha N Nassar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Muhammad Y Al-Shorbagy
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt; Department of Pharmaceutical Sciences, College of Pharmacy, Gulf Medical University, Ajman, 4184, United Arab Emirates
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11
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Liu H, Zhang Z, Zang C, Wang L, Yang H, Sheng C, Shang J, Zhao Z, Yuan F, Yu Y, Yao X, Bao X, Zhang D. GJ-4 ameliorates memory impairment in focal cerebral ischemia/reperfusion of rats via inhibiting JAK2/STAT1-mediated neuroinflammation. J Ethnopharmacol 2021; 267:113491. [PMID: 33091490 DOI: 10.1016/j.jep.2020.113491] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 09/30/2020] [Accepted: 10/16/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Gardenia jasminoides J. Ellis (Fructus Gardenia) is a traditional Chinese medicine with diverse pharmacological functions, such as anti-inflammation, anti-depression, as well as improvement of cognition and ischemia brain injury. GJ-4 is a natural extract from Gardenia jasminoides J. Ellis (Fructus Gardenia) and has been proved to improve memory impairment in Alzheimer's disease (AD) mouse model in our previous studies. AIM OF THE STUDY This study aimed to evaluate the therapeutic effects of GJ-4 on vascular dementia (VD) and explore the potential mechanisms. MATERIAL AND METHODS In our experiment, a focal cerebral ischemia and reperfusion rat model was successfully developed by the middle cerebral artery occlusion and reperfusion (MCAO/R). GJ-4 (10 mg/kg, 25 mg/kg, 50 mg/kg) and nimodipine (10 mg/kg) were orally administered to rats once a day for consecutive 12 days. Learning and memory behavioral performance was assayed by step-down test and Morris water maze test. The neurological scoring test was performed to evaluate the neurological function of rats. 2,3,5-Triphenyltetrazolium chloride (TTC) staining and Nissl staining were respectively employed to determine the infarct condition and neuronal injury of the brain. Iba1 immunohistochemistry was used to show the activation of microglia. Moreover, the synaptic damage and inflammatory level were detected by Western blot. RESULTS GJ-4 could significantly improve memory impairment, cerebral infraction, as well as neurological deficits of VD rats induced by MCAO/R. Further research indicated VD-induced neuronal injury was alleviated by GJ-4. In addition, GJ-4 could protect synapse of VD rats by upregulating synaptophysin (SYP) expression, post synaptic density 95 protein (PSD95) expression, and downregulating N-Methyl-D-Aspartate receptor 1 (NMDAR1) expression. Subsequent investigation of the underlying mechanisms identified that GJ-4 could suppress neuroinflammatory responses, supported by inhibited activation of microglia and reduced expression of inflammatory proteins, which ultimately exerted neuroprotective effects on VD. Further mechanistic study indicated that janus kinase 2 (JAK2)/signal transducer and activator of transcription 1 (STAT1) pathway was inhibited by GJ-4 treatment. CONCLUSION These results suggested that GJ-4 might serve as a potential drug to improve VD. In addition, our study indicated that inhibition of neuroinflammation might be a promising target to treat VD.
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MESH Headings
- Animals
- Behavior, Animal/drug effects
- Brain/drug effects
- Brain/enzymology
- Brain/pathology
- Brain/physiopathology
- Dementia, Vascular/enzymology
- Dementia, Vascular/etiology
- Dementia, Vascular/prevention & control
- Dementia, Vascular/psychology
- Disease Models, Animal
- Drugs, Chinese Herbal/pharmacology
- Gardenia
- Infarction, Middle Cerebral Artery/complications
- Infarction, Middle Cerebral Artery/drug therapy
- Infarction, Middle Cerebral Artery/enzymology
- Infarction, Middle Cerebral Artery/physiopathology
- Inflammation Mediators/metabolism
- Janus Kinase 2/metabolism
- Male
- Memory/drug effects
- Memory Disorders/enzymology
- Memory Disorders/etiology
- Memory Disorders/prevention & control
- Memory Disorders/psychology
- Microglia/drug effects
- Microglia/metabolism
- Microglia/pathology
- Neuroprotective Agents/pharmacology
- Nootropic Agents/pharmacology
- Plant Extracts/pharmacology
- Rats, Sprague-Dawley
- Reperfusion Injury/enzymology
- Reperfusion Injury/etiology
- Reperfusion Injury/physiopathology
- Reperfusion Injury/prevention & control
- STAT1 Transcription Factor/metabolism
- Signal Transduction
- Synapses/drug effects
- Synapses/metabolism
- Synapses/pathology
- Rats
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Affiliation(s)
- Hui Liu
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Zihong Zhang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Caixia Zang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Lu Wang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Hanyu Yang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Chanjuan Sheng
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Junmei Shang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Zhe Zhao
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Fangyu Yuan
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Yang Yu
- Institute of TCM, Natural Products College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Xinsheng Yao
- Institute of TCM, Natural Products College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Xiuqi Bao
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China.
| | - Dan Zhang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China.
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12
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Gendy A, Soubh A, Al-Mokaddem A, Kotb El-Sayed M. Dimethyl fumarate protects against intestinal ischemia/reperfusion lesion: Participation of Nrf2/HO-1, GSK-3β and Wnt/β-catenin pathway. Biomed Pharmacother 2021; 134:111130. [PMID: 33348309 DOI: 10.1016/j.biopha.2020.111130] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE Dimethyl fumarate (DMFU), a known Nrf2 activator, has proven its positive effect in different organs against ischemia/reperfusion (Is/Re) injury. Nevertheless, its possible impact to modulate intestinal Is/Re-induced injury has not been previously demonstrated before. Hence, this study aimed to investigate DMFU mechanistic maneuver against intestinal Is/Re. METHODS To accomplish this goal, Wistar rats were allocated into four groups; Sham-operated (SOP), intestinal Is/Re (1 h/6 h), and 14 days pre-treated DMFU (15 and 25 mg/kg/day, p.o). RESULTS The mechanistic maneuver divulged that DMFU safeguarded the intestine partly via amplifying the expression/content of Nrf2 along with enhancing its downstream, HO-1 expression/content. In addition, DMFU lessened GSK-3β expression/content accompanied by enriching β-catenin expression/content. The antioxidant action was affirmed by enhancing total antioxidant capacity, besides reducing MDA, iNOS, and its by-product, NOx. The DMFU action entailed anti-inflammatory character manifested by down-regulation of expression/content NF-κB with subsequent rebating the contents of TNF-α, IL-1β, and P-selectin, as well as MPO activity. Moreover, DMFU had anti-apoptotic nature demonstrated through enriching Bcl-2 level and diminishing that of caspase-3. CONCLUSION DMFU purveyed tenable novel protective mechanisms and mitigated events associated with intestinal Is/Re mischief either in the lower or the high dose partly by amending of oxidative stress and inflammation through the modulation of Nrf2/HO-1, GSK-3β, and Wnt/β-catenin pathways.
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Affiliation(s)
- Abdallah Gendy
- Pharmacology and Toxicology Department, Faculty of Pharmacy, October 6 University, Giza, 12585, Egypt.
| | - Ayman Soubh
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Ahram Canadian University, Giza, 12566, Egypt
| | - Asmaa Al-Mokaddem
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Mohamed Kotb El-Sayed
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy, Helwan University, Helwan, 11790, Egypt
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13
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Li Y, Xiang L, Wang C, Song Y, Miao J, Miao M. Protection against acute cerebral ischemia/reperfusion injury by Leonuri Herba Total Alkali via modulation of BDNF-TrKB-PI3K/Akt signaling pathway in rats. Biomed Pharmacother 2021; 133:111021. [PMID: 33227709 DOI: 10.1016/j.biopha.2020.111021] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/09/2020] [Accepted: 11/15/2020] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE To observe the brain protective effect of Leonuri Herba Total Alkali (LHA) on cerebral ischemia reperfusion injury in rats, so as to provide basis for clinical research. METHODS Adult male SD rats were randomly assigned into sham group, middle cerebral artery occlusion/reperfusion (MCAO/R) group, and LHA + MCAO/R group (25 mg/kg, 50 mg/kg, and 100 mg/kg). Fourteen days before MCAO/R surgery, the rats in treatment groups were orally administered with LHA in ultrapure water once daily for 14 days, while rats in the sham and MCAO groups were given the same amount of saline in advance. After 1 h of administration on the 14th day, MCAO surgery was subjected. The neurological deficits, brain infarct volume, histopathology, immunofluorescence, inflammation indicators and the gene/protein expressions of BDNF-TrKB-PI3K/Akt signaling pathway in the rat brain tissue were evaluated 24 h after the MCAO/R-injury. RESULTS It was found that rats in LHA pre-administration group showed significantly reduced neurological deficit scores, infarction volume, the serum levels of NSE and S100β. Meanwhile, the content of Evans Blue (EB) in brain tissue from LHA group was decreased, as well as the levels of inflammatory cytokines and their gene levels. Moreover, LHA pre-administration inhibited the expression of CD44, GFAP, FOXO1 and promoted the expression of BDNF and NeuN. In addition, LHA pre-administration could up-regulate the protein expression of TrkB, p-PI3K, p-Akt, Bcl-2, and down-regulate the protein expression of Bax, and increase the level of Bcl-2/Bax. CONCLUSIONS The study demonstrated that LHA pre-administration could regulate the PI3K/Akt pathway by increasing BDNF levels, and play a neuroprotective role in cerebral ischemia-reperfusion injury.
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Affiliation(s)
- Yan Li
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Liling Xiang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Can Wang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Yagang Song
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Jinxin Miao
- National International Cooperation Base of Chinese Medicine, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China.
| | - Mingsan Miao
- National International Cooperation Base of Chinese Medicine, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China.
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14
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Unterschemmann K, Ehrmann A, Herzig I, Andreevski AL, Lustig K, Schmeck C, Eitner F, Grundmann M. Pharmacological inhibition of Vanin-1 is not protective in models of acute and chronic kidney disease. Am J Physiol Renal Physiol 2021; 320:F61-F73. [PMID: 33196323 DOI: 10.1152/ajprenal.00373.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/08/2020] [Indexed: 12/31/2022] Open
Abstract
Oxidative stress is a key concept in basic, translational, and clinical research to understand the pathophysiology of various disorders, including cardiovascular and renal diseases. Although attempts to directly reduce oxidative stress with redox-active substances have until now largely failed to prove clinical benefit, indirect approaches to combat oxidative stress enzymatically have gained further attention as potential therapeutic strategies. The pantetheinase Vanin-1 is expressed on kidney proximal tubular cells, and its reaction product cysteamine is described to negatively affect redox homeostasis by inhibiting the replenishment of cellular antioxidative glutathione stores. Vanin-1-deficient mice were shown to be protected against oxidative stress damage. The aim of this study was to elucidate whether pharmacological inhibition of Vanin-1 protects mice from oxidative stress-related acute or chronic kidney injury as well. By studying renal ischemia-reperfusion injury in Col4α3-/- (Alport syndrome) mice and in vitro hypoxia-reoxygenation in human proximal tubular cells we found that treatment with a selective and potent Vanin-1 inhibitor resulted in ample inhibition of enzymatic activity in vitro and in vivo. However, surrogate parameters of metabolic and redox homeostasis were only partially and insufficiently affected. Consequently, apoptosis and reactive oxygen species level in tubular cells as well as overall kidney function and fibrotic processes were not improved by Vanin-1 inhibition. We thus conclude that Vanin-1 functionality in the context of cardiovascular diseases needs further investigation and the biological relevance of pharmacological Vanin-1 inhibition for the treatment of kidney diseases remains to be proven.
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MESH Headings
- Acute Kidney Injury/enzymology
- Acute Kidney Injury/genetics
- Acute Kidney Injury/pathology
- Acute Kidney Injury/prevention & control
- Amidohydrolases/antagonists & inhibitors
- Amidohydrolases/genetics
- Amidohydrolases/metabolism
- Animals
- Apoptosis/drug effects
- Autoantigens/genetics
- Autoantigens/metabolism
- Cell Line
- Collagen Type IV/genetics
- Collagen Type IV/metabolism
- Disease Models, Animal
- Enzyme Inhibitors/pharmacokinetics
- Enzyme Inhibitors/pharmacology
- Fibrosis
- GPI-Linked Proteins/antagonists & inhibitors
- GPI-Linked Proteins/genetics
- GPI-Linked Proteins/metabolism
- Humans
- Kidney Tubules, Proximal/drug effects
- Kidney Tubules, Proximal/enzymology
- Kidney Tubules, Proximal/pathology
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Nephritis, Hereditary/enzymology
- Nephritis, Hereditary/genetics
- Nephritis, Hereditary/pathology
- Nephritis, Hereditary/prevention & control
- Oxidative Stress/drug effects
- Renal Insufficiency, Chronic/enzymology
- Renal Insufficiency, Chronic/genetics
- Renal Insufficiency, Chronic/pathology
- Renal Insufficiency, Chronic/prevention & control
- Reperfusion Injury/enzymology
- Reperfusion Injury/genetics
- Reperfusion Injury/pathology
- Reperfusion Injury/prevention & control
- Mice
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Affiliation(s)
| | | | - Ina Herzig
- Drug Discovery Sciences, Bayer Pharmaceuticals, Wuppertal, Germany
| | | | - Klemens Lustig
- Research and Early Development, Bayer Pharmaceuticals, Wuppertal, Germany
| | - Carsten Schmeck
- Drug Discovery Sciences, Bayer Pharmaceuticals, Wuppertal, Germany
| | - Frank Eitner
- Research and Early Development, Bayer Pharmaceuticals, Wuppertal, Germany
| | - Manuel Grundmann
- Research and Early Development, Bayer Pharmaceuticals, Wuppertal, Germany
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15
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Güvenç M, Cellat M, Uyar A, Özkan H, Gokcek İ, İsler CT, Yakan A. Nobiletin Protects from Renal Ischemia-Reperfusion Injury in Rats by Suppressing Inflammatory Cytokines and Regulating iNOS-eNOS Expressions. Inflammation 2020; 43:336-346. [PMID: 31705353 DOI: 10.1007/s10753-019-01123-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Ischemia-reperfusion injury is an organ failure caused by hypoxia and reperfusion, which is closely associated with oxidative stress and inflammation. In this study, we investigated whether nobiletin had protective effects on inflammatory parameters, oxidative damage, iNOS-eNOS expressions, and histopathological structure of renal tissue in rats with renal ischemia-reperfusion injury. For this purpose, 24 rats were divided into 4 groups: group 1 (Control), group 2 (Ischemia-Reperfusion-IR), group 3 (Nobiletin-10 mg/kg p.o.), group 4 (Nobiletin + IR). The study was continued for 7 days. At the end of the study, urea (p < 0.05), creatine (p < 0.05), MDA (p < 0.001), TNF-alpha (p < 0.001), IL-1 beta (p < 0.05), and IL-6 (p < 0.001) levels increased in the IR group; however, a significant decrease occurred in group 4 (Nobiletin + IR) and it reached the control group levels. In the IR group, GSH (p < 0.01) levels, and GSH.Px (p < 0.01) and CAT (p < 0.05) activities decreased whereas they increased significantly in group 4 (Nobiletin + IR) and reached the same levels as the control group. In histopathological analyses, destruction and increased iNOS-eNOS expressions in the IR group showed a significant decrease in group 4 (Nobiletin + IR). As a result, the application of nobiletin has shown that it has protective effects by reducing kidney damage caused by IR injury.
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Affiliation(s)
- Mehmet Güvenç
- Mustafa Kemal University, Faculty of Veterinary Medicine, Department of Physiology, Antakya, Turkey.
| | - Mustafa Cellat
- Mustafa Kemal University, Faculty of Veterinary Medicine, Department of Physiology, Antakya, Turkey
| | - Ahmet Uyar
- Mustafa Kemal University, Faculty of Veterinary Medicine, Department of Pathology, Antakya, Turkey
| | - Hüseyin Özkan
- Mustafa Kemal University, Faculty of Veterinary Medicine, Department of Genetics, Antakya, Turkey
| | - İshak Gokcek
- Mustafa Kemal University, Faculty of Veterinary Medicine, Department of Physiology, Antakya, Turkey
| | - Cafer Tayer İsler
- Mustafa Kemal University, Faculty of Veterinary Medicine, Department Surgery, Antakya, Turkey
| | - Akın Yakan
- Mustafa Kemal University, Faculty of Veterinary Medicine, Department of Genetics, Antakya, Turkey
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16
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Jung HY, Oh SH, Ahn JS, Oh EJ, Kim YJ, Kim CD, Park SH, Kim YL, Cho JH. NOX1 Inhibition Attenuates Kidney Ischemia-Reperfusion Injury via Inhibition of ROS-Mediated ERK Signaling. Int J Mol Sci 2020; 21:ijms21186911. [PMID: 32967113 PMCID: PMC7554761 DOI: 10.3390/ijms21186911] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/13/2020] [Accepted: 09/14/2020] [Indexed: 02/07/2023] Open
Abstract
The protective effects of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX) 1 inhibition against kidney ischemia-reperfusion injury (IRI) remain uncertain. The bilateral kidney pedicles of C57BL/6 mice were clamped for 30 min to induce IRI. Madin–Darby Canine Kidney (MDCK) cells were incubated with H2O2 (1.4 mM) for 1 h to induce oxidative stress. ML171, a selective NOX1 inhibitor, and siRNA against NOX1 were treated to inhibit NOX1. NOX expression, oxidative stress, apoptosis assay, and mitogen-activated protein kinase (MAPK) pathway were evaluated. The kidney function deteriorated and the production of reactive oxygen species (ROS), including intracellular H2O2 production, increased due to IRI, whereas IRI-mediated kidney dysfunction and ROS generation were significantly attenuated by ML171. H2O2 evoked the changes in oxidative stress enzymes such as SOD2 and GPX in MDCK cells, which was mitigated by ML171. Treatment with ML171 and transfection with siRNA against NOX1 decreased the upregulation of NOX1 and NOX4 induced by H2O2 in MDCK cells. ML171 decreased caspase-3 activity, the Bcl-2/Bax ratio, and TUNEL-positive tubule cells in IRI mice and H2O2-treated MDCK cells. Among the MAPK pathways, ML171 affected ERK signaling by ERK phosphorylation in kidney tissues and tubular cells. NOX1-selective inhibition attenuated kidney IRI via inhibition of ROS-mediated ERK signaling.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Jang-Hee Cho
- Correspondence: ; Tel.: +82-10-6566-7551; Fax: +82-53-426-2046
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17
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Lu MY, Wu JR, Liang RB, Wang YP, Zhu YC, Ma ZT, Zhang H, Zan J, Tan W. Upregulation of miR-219a-5p Decreases Cerebral Ischemia/Reperfusion Injury In Vitro by Targeting Pde4d. J Stroke Cerebrovasc Dis 2020; 29:104801. [PMID: 32249206 DOI: 10.1016/j.jstrokecerebrovasdis.2020.104801] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 01/23/2020] [Accepted: 03/02/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Ischemic stroke is the leading cause of disability and death globally. Micro-RNAs (miRNAs) have been reported to play important roles in the development and pathogenesis of the nervous system. However, the exact function and mechanism of miRNAs have not been fully elucidated about brain damage caused by cerebral ischemia/reperfusion (I/R). METHODS In this study, we explored the neuroprotective effects of miR-219a-5p on brain using an in vitro ischemia model (mouse neuroblastoma N2a cells treated with oxyglucose deprivation and reperfusion), and in vivo cerebral I/R model in mice. Western blot assay and Reverse Transcription-Polymerase Chain Reaction were used to check the expression of molecules involved. Flow cytometry and cholecystokinin were used to examine cell apoptosis, respectively. RESULTS Our research shows that miR-219a-5p gradually decreases in cerebral I/R models in vivo and in vitro. In vitro I/R, we find that miR-219a-5p mimics provided evidently protection for cerebral I/R damage, as shown by increased cell viability and decreased the release of LDH and cell apoptosis. Mechanically, our findings indicate that miR-219a-5p binds to cAMP specific 3', 5'-cyclic phosphodiesterase 4D (PDE4D) mRNA in the 3'-UTR region, which subsequently leads to a decrease in Pde4d expression in I/R N2a cells. CONCLUSIONS Our results provide new ideas for the study of the mechanism of cerebral ischemia/reperfusion injury, and lay the foundation for further research on the treatment of brain I/R injury. Upregulation of miR-219a-5p decreases cerebral ischemia/reperfusion injury by targeting Pde4d in vitro.
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Affiliation(s)
- Min-Yi Lu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Jin-Rong Wu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Rui-Bing Liang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Yu-Peng Wang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - You-Cai Zhu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Zi-Ting Ma
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Hao Zhang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Jie Zan
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China.
| | - Wen Tan
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China.
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18
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Shvedova M, Litvak MM, Roberts JD, Fukumura D, Suzuki T, Şencan İ, Li G, Reventun P, Buys ES, Kim HH, Sakadžić S, Ayata C, Huang PL, Feil R, Atochin DN. cGMP-dependent protein kinase I in vascular smooth muscle cells improves ischemic stroke outcome in mice. J Cereb Blood Flow Metab 2019; 39:2379-2391. [PMID: 31423931 PMCID: PMC6893979 DOI: 10.1177/0271678x19870583] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 07/18/2019] [Indexed: 11/15/2022]
Abstract
Recent works highlight the therapeutic potential of targeting cyclic guanosine monophosphate (cGMP)-dependent pathways in the context of brain ischemia/reperfusion injury (IRI). Although cGMP-dependent protein kinase I (cGKI) has emerged as a key mediator of the protective effects of nitric oxide (NO) and cGMP, the mechanisms by which cGKI attenuates IRI remain poorly understood. We used a novel, conditional cGKI knockout mouse model to study its role in cerebral IRI. We assessed neurological deficit, infarct volume, and cerebral perfusion in tamoxifen-inducible vascular smooth muscle cell-specific cGKI knockout mice and control animals. Stroke experiments revealed greater cerebral infarct volume in smooth muscle cell specific cGKI knockout mice (males: 96 ± 16 mm3; females: 93 ± 12 mm3, mean±SD) than in all control groups: wild type (males: 66 ± 19; females: 64 ± 14), cGKI control (males: 65 ± 18; females: 62 ± 14), cGKI control with tamoxifen (males: 70 ± 8; females: 68 ± 10). Our results identify, for the first time, a protective role of cGKI in vascular smooth muscle cells during ischemic stroke injury. Moreover, this protective effect of cGKI was found to be independent of gender and was mediated via improved reperfusion. These results suggest that cGKI in vascular smooth muscle cells should be targeted by therapies designed to protect brain tissue against ischemic stroke.
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Affiliation(s)
- Maria Shvedova
- Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, USA
| | - Maxim M Litvak
- Tomsk Polytechnic University, RASA Center, Tomsk, Russian Federation
| | - Jesse D Roberts
- Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, USA
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Dai Fukumura
- Department of Radiation Oncology, Edwin L. Steele Laboratories, Massachusetts General Hospital, Boston, MA, USA
| | - Tomoaki Suzuki
- Department of Radiology, Neurovascular Research Laboratory, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, USA
| | - İkbal Şencan
- Athinoula A. Martinos Center for Biomedical Imaging, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, USA
| | - Ge Li
- Department of Radiology, Neurovascular Research Laboratory, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, USA
| | - Paula Reventun
- Department of Biology Systems, School of Medicine, University of Alcalá, Madrid, Spain
| | - Emmanuel S Buys
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Hyung-Hwan Kim
- Department of Radiology, Neurovascular Research Laboratory, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, USA
| | - Sava Sakadžić
- Athinoula A. Martinos Center for Biomedical Imaging, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, USA
| | - Cenk Ayata
- Department of Radiology, Neurovascular Research Laboratory, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, USA
| | - Paul L Huang
- Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, USA
| | - Robert Feil
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - Dmitriy N Atochin
- Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, USA
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19
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Zhang W, Liu J, Li P, Wang X, Bi S, Zhang J, Zhang W, Wang H, Tang B. In situ and real-time imaging of superoxide anion and peroxynitrite elucidating arginase 1 nitration aggravating hepatic ischemia-reperfusion injury. Biomaterials 2019; 225:119499. [PMID: 31561087 DOI: 10.1016/j.biomaterials.2019.119499] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/26/2019] [Accepted: 09/15/2019] [Indexed: 02/02/2023]
Abstract
Hepatic ischemia-reperfusion (IR) injury is dynamically regulated by intertwined superoxide anion (O2-)-peroxynitrite (ONOO-) cascaded molecules. Arginase 1 involves in O2-/ONOO- fluctuations and is strongly connected to IR injury. A few probes have been innovated to measure intracellular O2- or ONOO- by fluorescent imaging separately, but revealing the definite link of O2-, ONOO- and arginase 1 in situ remains unidentified in hepatic IR. Thus, a well-designed dual-color two-photon fluorescence probe (CyCA) was created for the in situ real-time detection of O2--ONOO-. Surprisingly, CyCA exhibited a suitable combination of high specificity, preeminent sensitivity, exclusive mitochondria-targeting and fast-response. On the basis of remarkable advantages, we successfully applied CyCA to visualize endogenous O2- and ONOO- in living cells and mice. The synergistic elevation of mitochondrial O2--ONOO- in IR mice was observed for the first time. Furthermore, three tyrosine nitration-sites in arginase 1 caused by ONOO- were identified in proteomic analysis, which was never reported previously. Attractively, nitro-modified arginase 1 could further promote ONOO- formation, ultimately exacerbating the intracellular redox imbalance and IR injury. These new findings decipher direct molecular links of O2--ONOO--arginase 1, and suggest effective strategies for the prevention and treatment of IR injury.
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Affiliation(s)
- Wen Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Jihong Liu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Ping Li
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China.
| | - Xin Wang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Simin Bi
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Jiao Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Wei Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Hui Wang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China.
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20
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Panel M, Ruiz I, Brillet R, Lafdil F, Teixeira-Clerc F, Nguyen CT, Calderaro J, Gelin M, Allemand F, Guichou JF, Ghaleh B, Ahmed-Belkacem A, Morin D, Pawlotsky JM. Small-Molecule Inhibitors of Cyclophilins Block Opening of the Mitochondrial Permeability Transition Pore and Protect Mice From Hepatic Ischemia/Reperfusion Injury. Gastroenterology 2019; 157:1368-1382. [PMID: 31336123 DOI: 10.1053/j.gastro.2019.07.026] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 07/12/2019] [Accepted: 07/16/2019] [Indexed: 01/11/2023]
Abstract
BACKGROUND & AIMS Hepatic ischemia/reperfusion injury is a complication of liver surgery that involves mitochondrial dysfunction resulting from mitochondrial permeability transition pore (mPTP) opening. Cyclophilin D (PPIF or CypD) is a peptidyl-prolyl cis-trans isomerase that regulates mPTP opening in the inner mitochondrial membrane. We investigated whether and how recently created small-molecule inhibitors of CypD prevent opening of the mPTP in hepatocytes and the resulting effects in cell models and livers of mice undergoing ischemia/reperfusion injury. METHODS We measured the activity of 9 small-molecule inhibitors of cyclophilins in an assay of CypD activity. The effects of the small-molecule CypD inhibitors or vehicle on mPTP opening were assessed by measuring mitochondrial swelling and calcium retention in isolated liver mitochondria from C57BL/6J (wild-type) and Ppif-/- (CypD knockout) mice and in primary mouse and human hepatocytes by fluorescence microscopy. We induced ischemia/reperfusion injury in livers of mice given a small-molecule CypD inhibitor or vehicle before and during reperfusion and collected samples of blood and liver for histologic analysis. RESULTS The compounds inhibited peptidyl-prolyl isomerase activity (half maximal inhibitory concentration values, 0.2-16.2 μmol/L) and, as a result, calcium-induced mitochondrial swelling, by preventing mPTP opening (half maximal inhibitory concentration values, 1.4-132 μmol/L) in a concentration-dependent manner. The most potent inhibitor (C31) bound CypD with high affinity and inhibited swelling in mitochondria from livers of wild-type and Ppif-/- mice (indicating an additional, CypD-independent effect on mPTP opening) and in primary human and mouse hepatocytes. Administration of C31 in mice with ischemia/reperfusion injury before and during reperfusion restored hepatic calcium retention capacity and oxidative phosphorylation parameters and reduced liver damage compared with vehicle. CONCLUSIONS Recently created small-molecule inhibitors of CypD reduced calcium-induced swelling in mitochondria from mouse and human liver tissues. Administration of these compounds to mice during ischemia/reperfusion restored hepatic calcium retention capacity and oxidative phosphorylation parameters and reduced liver damage. These compounds might be developed to protect patients from ischemia/reperfusion injury after liver surgery or for other hepatic or nonhepatic disorders related to abnormal mPTP opening.
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Affiliation(s)
- Mathieu Panel
- INSERM U955, Team 3, Créteil, France; Université Paris-Est, UMR S955, DHU A-TVB, UPEC, Créteil, France
| | - Isaac Ruiz
- INSERM U955, Team Viruses, Hepatology, Cancer, Créteil, France
| | - Rozenn Brillet
- INSERM U955, Team Viruses, Hepatology, Cancer, Créteil, France
| | - Fouad Lafdil
- INSERM U955, Team Viruses, Hepatology, Cancer, Créteil, France; Institut Universitaire de France (IUF), Paris, France
| | | | - Cong Trung Nguyen
- INSERM U955, Team Viruses, Hepatology, Cancer, Créteil, France; Department of Pathology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Julien Calderaro
- INSERM U955, Team Viruses, Hepatology, Cancer, Créteil, France; Department of Pathology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Muriel Gelin
- Centre de Biochimie Structurale (CBS), INSERM U1054, CNRS UMR5048, Université de Montpellier, Montpellier, France
| | - Fred Allemand
- Centre de Biochimie Structurale (CBS), INSERM U1054, CNRS UMR5048, Université de Montpellier, Montpellier, France
| | - Jean-François Guichou
- Centre de Biochimie Structurale (CBS), INSERM U1054, CNRS UMR5048, Université de Montpellier, Montpellier, France
| | - Bijan Ghaleh
- INSERM U955, Team 3, Créteil, France; Université Paris-Est, UMR S955, DHU A-TVB, UPEC, Créteil, France
| | | | - Didier Morin
- INSERM U955, Team 3, Créteil, France; Université Paris-Est, UMR S955, DHU A-TVB, UPEC, Créteil, France.
| | - Jean-Michel Pawlotsky
- INSERM U955, Team Viruses, Hepatology, Cancer, Créteil, France; National Reference Center for Viral Hepatitis B, C and Delta, Department of Virology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France.
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21
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Nath KA, Garovic VD, Grande JP, Croatt AJ, Ackerman AW, Farrugia G, Katusic ZS, Belcher JD, Vercellotti GM. Heme oxygenase-2 protects against ischemic acute kidney injury: influence of age and sex. Am J Physiol Renal Physiol 2019; 317:F695-F704. [PMID: 31215802 PMCID: PMC6842883 DOI: 10.1152/ajprenal.00085.2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/13/2019] [Accepted: 06/17/2019] [Indexed: 01/01/2023] Open
Abstract
Heme oxygenase (HO) activity is exhibited by inducible (HO-1) and constitutive (HO-2) proteins. HO-1 protects against ischemic and nephrotoxic acute kidney injury (AKI). We have previously demonstrated that HO-2 protects against heme protein-induced AKI. The present study examined whether HO-2 is protective in ischemic AKI. Renal ischemia was imposed on young and aged HO-2+/+ and HO-2-/- mice. On days 1 and 2 after renal ischemia, there were no significant differences in renal function between young male HO-2+/+ and HO-2-/- mice, between young female HO-2+/+ and HO-2-/- mice, or between aged female HO-2+/+ and HO-2-/- mice. However, in aged male mice, HO-2 deficiency worsened renal function on days 1 and 2 after ischemic AKI, and, on day 2 after ischemia, such deficiency augmented upregulation of injury-related genes and worsened histological injury. Renal HO activity was markedly decreased in unstressed aged male HO-2-/- mice and remained so after ischemia, despite exaggerated HO-1 induction in HO-2-/- mice after ischemia. Such exacerbation of deficiency of HO-2 protein and HO activity may reflect phosphorylated STAT3, as activation of this proinflammatory transcription factor was accentuated early after ischemia in aged male HO-2-/- mice. This exacerbation may not reflect impaired induction of nephroprotectant genes, since the induction of HO-1, sirtuin 1, and β-catenin was accentuated in aged male HO-2-/- mice after ischemia. We conclude that aged male mice are hypersensitive to ischemic AKI and that HO-2 mitigates such sensitivity. We speculate that this protective effect of HO-2 may be mediated, at least in part, by suppression of phosphorylated STAT3-dependent signaling.
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Affiliation(s)
- Karl A Nath
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Vesna D Garovic
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | | | - Anthony J Croatt
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Allan W Ackerman
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Gianrico Farrugia
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | | | - John D Belcher
- Division of Hematology, Oncology, and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Gregory M Vercellotti
- Division of Hematology, Oncology, and Transplantation, University of Minnesota, Minneapolis, Minnesota
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22
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Nensén O, Hansell P, Palm F. Role of carbonic anhydrase in acute recovery following renal ischemia reperfusion injury. PLoS One 2019; 14:e0220185. [PMID: 31465457 PMCID: PMC6715224 DOI: 10.1371/journal.pone.0220185] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 07/10/2019] [Indexed: 11/18/2022] Open
Abstract
Ischemia reperfusion (IR) injury can cause acute kidney injury. It has previously been reported that kidney oxygen consumption (QO2) in relation to glomerular filtration rate (GFR), and thus tubular sodium load, is markedly increased following IR injury, indicating reduced electrolyte transport efficiency. Since proximal tubular sodium reabsorption (TNa) is a major contributor to overall kidney QO2, we investigated whether inhibition of proximal tubular sodium transport through carbonic anhydrase (CA) inhibition would improve renal oxygenation following ischemia reperfusion. Anesthetized adult male Sprague Dawley rats were administered the CA inhibitor acetazolamide (50 mg/kg bolus iv), or volume-matched vehicle, and kidney function, hemodynamics and QO2 were estimated before and after 45 minutes of unilateral complete warm renal ischemia. CA inhibition per se reduced GFR (-20%) and TNa (-22%), while it increased urine flow and urinary sodium excretion (36-fold). Renal blood flow was reduced (-31%) due to increased renal vascular resistance (+37%) without affecting QO2. IR per se resulted in similar decrease in GFR and TNa, independently of CA activity. However, the QO2/TNa ratio following ischemia-reperfusion was profoundly increased in the group receiving CA inhibition, indicating a significant contribution of basal oxygen metabolism to the total kidney QO2 following inhibition of proximal tubular function after IR injury. Ischemia increased urinary excretion of kidney injury molecule-1, an effect that was unaffected by CA. In conclusion, this study demonstrates that CA inhibition further impairs renal oxygenation and does not protect tubular function in the acute phase following IR injury. Furthermore, these results indicate a major role of the proximal tubule in the acute recovery from an ischemic insult.
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Affiliation(s)
- Oskar Nensén
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
- Uppsala University Hospital, Uppsala, Sweden
| | - Peter Hansell
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Fredrik Palm
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
- * E-mail:
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23
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Rabbani N, Thornalley PJ. Hexokinase-2 Glycolytic Overload in Diabetes and Ischemia-Reperfusion Injury. Trends Endocrinol Metab 2019; 30:419-431. [PMID: 31221272 DOI: 10.1016/j.tem.2019.04.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/21/2019] [Accepted: 04/25/2019] [Indexed: 01/12/2023]
Abstract
Hexokinase-2 (HK2) was recently found to produce increased metabolic flux through glycolysis in hyperglycemia without concurrent transcriptional or other functional regulation. Rather, stabilization to proteolysis by increased glucose substrate binding produced unscheduled increased glucose metabolism in response to high cytosolic glucose concentration. This produces abnormal increases in glycolytic intermediates or glycolytic overload, driving cell dysfunction and vulnerability to the damaging effects of hyperglycemia in diabetes, explaining tissue-specific pathogenesis. Glycolytic overload is also activated in ischemia-reperfusion injury and cell senescence. A further key feature is HK2 displacement from mitochondria by increased glucose-6-phosphate concentration, inducing mitochondrial dysfunction and oxidative stress. This pathogenic mechanism suggested new targets for therapeutics development that gave promising outcomes in initial clinical evaluation.
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Affiliation(s)
- Naila Rabbani
- Clinical Sciences Research Laboratories, Warwick Medical School, University of Warwick, University Hospital, Coventry CV2 2DX, UK
| | - Paul J Thornalley
- Diabetes Research Center, Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Qatar Foundation, P.O. Box 34110, Doha, Qatar.
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24
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Suzuki C, Tanida I, Ohmuraya M, Oliva Trejo JA, Kakuta S, Sunabori T, Uchiyama Y. Lack of Cathepsin D in the Renal Proximal Tubular Cells Resulted in Increased Sensitivity against Renal Ischemia/Reperfusion Injury. Int J Mol Sci 2019; 20:ijms20071711. [PMID: 30959855 PMCID: PMC6479628 DOI: 10.3390/ijms20071711] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 03/29/2019] [Accepted: 04/02/2019] [Indexed: 12/13/2022] Open
Abstract
Cathepsin D is one of the major lysosomal aspartic proteases that is essential for the normal functioning of the autophagy-lysosomal system. In the kidney, cathepsin D is enriched in renal proximal tubular epithelial cells, and its levels increase during acute kidney injury. To investigate how cathepsin D-deficiency impacts renal proximal tubular cells, we employed a conditional knockout CtsDflox/−; Spink3Cre mouse. Immunohistochemical analyses using anti-cathepsin D antibody revealed that cathepsin D was significantly decreased in tubular epithelial cells of the cortico-medullary region, mainly in renal proximal tubular cells of this mouse. Cathepsin D-deficient renal proximal tubular cells showed an increase of microtubule-associated protein light chain 3 (LC3; a marker for autophagosome/autolysosome)-signals and an accumulation of abnormal autophagic structures. Renal ischemia/reperfusion injury resulted in an increase of early kidney injury marker, Kidney injury molecule 1 (Kim-1), in the cathepsin D-deficient renal tubular epithelial cells of the CtsDflox/−; Spink3Cre mouse. Inflammation marker was also increased in the cortico-medullary region of the CtsDflox/−; Spink3Cre mouse. Our results indicated that lack of cathepsin D in the renal tubular epithelial cells led to an increase of sensitivity against ischemia/reperfusion injury.
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Affiliation(s)
- Chigure Suzuki
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Bunkyo-Ku, Tokyo 113-0033, Japan.
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Bunkyo-Ku, Tokyo 113-0033, Japan.
| | - Isei Tanida
- Department of Cell Biology and Neuroscience, Juntendo University School of Medicine, Bunkyo-Ku, Tokyo 113-0033, Japan.
| | - Masaki Ohmuraya
- Department of Genetics, Hyogo College of Medicine, Nishinomiya 663-8131, Japan.
| | - Juan Alejandro Oliva Trejo
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Bunkyo-Ku, Tokyo 113-0033, Japan.
| | - Soichiro Kakuta
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Bunkyo-Ku, Tokyo 113-0033, Japan.
- Laboratory of Morphology and Image Analysis, Biomedical Research Center, Juntendo University Graduate School of Medicine, Bunkyo-Ku 113-0033, Japan.
| | - Takehiko Sunabori
- Department of Cell Biology and Neuroscience, Juntendo University School of Medicine, Bunkyo-Ku, Tokyo 113-0033, Japan.
| | - Yasuo Uchiyama
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Bunkyo-Ku, Tokyo 113-0033, Japan.
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Fan J, Chen M, Wang X, Tian Z, Wang J, Fan D, Zeng J, Zhang K, Dai X. Targeting Smox Is Neuroprotective and Ameliorates Brain Inflammation in Cerebral Ischemia/Reperfusion Rats. Toxicol Sci 2019; 168:381-393. [PMID: 30576531 DOI: 10.1093/toxsci/kfy300] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Spermine oxidase (Smox) is a member of the polyamine oxidases and has been demonstrated to be involved in ischemic brain damage. In this study, we found that Smox expression was increased in a rat middle cerebral artery occlusion (MCAO) model and in cultured primary neurons after oxygen-glucose deprivation and reoxygenation (OGD/R). Smox downregulation by the adeno-associated virus RNA interference system significantly reduced the MCAO-induced brain infarct volume and neurological deficits and decreased neuronal apoptosis and inflammatory reactions. In addition, significant microglial activation and increased IL-6 and TNF-α expression were observed in microglia treated with supernatant from neurons after OGD/R. However, a significant reduction in microglial activation as well as IL-6 and TNF-α expression was observed in microglia treated with supernatant from Smox downregulated neurons after OGD/R. Therefore, the results indicated that Smox is an important mediator of cerebral ischemia injury and may be a therapeutic target for cerebral ischemia patients.
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Affiliation(s)
| | - Mei Chen
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, Sichuan 610500, China
| | | | - Zhijie Tian
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, Sichuan 610500, China
| | | | - Daogui Fan
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, Sichuan 610500, China
| | | | - Kun Zhang
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, Sichuan 610500, China
| | - Xiaozhen Dai
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, Sichuan 610500, China
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Song YJ, Dai CX, Li M, Cui MM, Ding X, Zhao XF, Wang CL, Li ZL, Guo MY, Fu YY, Wen XR, Qi DS, Wang YL. The potential role of HO-1 in regulating the MLK3-MKK7-JNK3 module scaffolded by JIP1 during cerebral ischemia/reperfusion in rats. Behav Brain Res 2019; 359:528-535. [PMID: 30412737 DOI: 10.1016/j.bbr.2018.11.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 11/03/2018] [Accepted: 11/05/2018] [Indexed: 01/01/2023]
Abstract
Heme oxygenase (HO-1), which may be induced by Cobaltic protoporphyrin IX chloride (CoPPIX) or Rosiglitazone (Ros), is a neuroprotective agent that effectively reduces ischemic stroke. Previous studies have shown that the neuroprotective mechanisms of HO-1 are related to JNK signaling. The expression of HO-1 protects cells from death through the JNK signaling pathway. This study aimed to ascertain whether the neuroprotective effect of HO-1 depends on the assembly of the MLK3-MKK7-JNK3 signaling module scaffolded by JIP1 and further influences the JNK signal transmission through HO-1. Prior to the ischemia-reperfusion experiment, CoPPIX was injected through the lateral ventricle for 5 consecutive days or Ros was administered via intraperitoneal administration in the week prior to transient ischemia. Our results demonstrated that HO-1 could inhibit the assembly of the MLK3-MKK7-JNK3 signaling module scaffolded by JIP1 and could ultimately diminish the phosphorylation of JNK3. Furthermore, the inhibition of JNK3 phosphorylation downregulated the level of p-c-Jun and elevated neuronal cell death in the CA1 of the hippocampus. Taken together, these findings suggested that HO-1 could ameliorate brain injury by regulating the MLK3-MKK7-JNK3 signaling module, which was scaffolded by JIP1 and JNK signaling during cerebral ischemia/reperfusion.
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Affiliation(s)
- Yuan-Jian Song
- Jiangsu Key Laboratory of Brain Disease Bioinformatics, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China; Department of Genetics, Research Facility Center for Morphology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Chun-Xiao Dai
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Man Li
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Miao-Miao Cui
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Xin Ding
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Xiao-Fang Zhao
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Cai-Lin Wang
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Zhen-Ling Li
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Meng-Yuan Guo
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Yan-Yan Fu
- Jiangsu Key Laboratory of Brain Disease Bioinformatics, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China; Department of Genetics, Research Facility Center for Morphology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Xiang-Ru Wen
- Jiangsu Key Laboratory of Brain Disease Bioinformatics, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China; School of Basic Education Science, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China.
| | - Da-Shi Qi
- Jiangsu Key Laboratory of Brain Disease Bioinformatics, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China; Department of Genetics, Research Facility Center for Morphology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China.
| | - Yu-Lan Wang
- Jiangsu Key Laboratory of Brain Disease Bioinformatics, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China; Department of Anatomy, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China.
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Gao W, Jiang T, Liu YH, Ding WG, Guo CC, Cui XG. Endothelial progenitor cells attenuate the lung ischemia/reperfusion injury following lung transplantation via the endothelial nitric oxide synthase pathway. J Thorac Cardiovasc Surg 2019; 157:803-814. [PMID: 30391008 DOI: 10.1016/j.jtcvs.2018.08.092] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 07/28/2018] [Accepted: 08/11/2018] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Endothelial progenitor cells (EPCs) can improve endothelial integrity. This study aimed to examine the effects and the mechanism of EPCs on lung ischemia-reperfusion injury (LIRI). METHODS Wistar rats were randomized into the sham or the left lung transplantation group. The recipients were randomized and treated with vehicle as the LIRI group, with EPC as the EPC group, or with N5-(1-iminoethyl)-l-ornithine-pretreated EPC as the EPC/L group (n = 8 per group). The ratios of arterial oxygen partial pressure to fractional inspiratory oxygen were measured. The lung wet-to-dry weight ratios, protein levels, and injury, as well as the levels of plasma cytokines, were examined. The levels of endothelin (ET)-1, endothelial nitric oxide synthase (eNOS), phosphorylated eNOS, inducible NOS, phosphorylated myosin light chain, nuclear factor-κBp65, Bax, Bcl-2, cleaved caspase-3, and myeloperoxidase in the graft lungs were detected. RESULTS Compared with the LIRI group, EPC treatment significantly increased the ratios of arterial oxygen partial pressure to fractional inspiratory oxygen and decreased the lung wet-to-dry weight ratios and protein levels in the grafts, accompanied by increasing eNOS expression and phosphorylation, but decreasing endothelin-1, inducible NOS, phosphorylated nuclear factor-kBp65, phosphorylated myosin light chain expression, and myeloperoxidase activity. EPCs reduced lung tissue damage and apoptosis associated with decreased levels of Bax and cleaved caspase-3 expression, but increased Bcl-2 expression. EPC treatment significantly reduced the levels of serum proinflammatory factors, but elevated levels of interleukin-10. In contrast, the protective effect of EPCs were mitigated and abrogated by N5-(1-iminoethyl)-l-ornithine pretreatment. CONCLUSIONS Data indicated that EPC ameliorated LIRI by increasing eNOS expression.
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Affiliation(s)
- Wei Gao
- Department of Anesthesiology, the Second Affiliated Hospital of the Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Tao Jiang
- Department of Anesthesiology, the Second Affiliated Hospital of the Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Yan-Hong Liu
- Department of Anesthesiology, the Second Affiliated Hospital of the Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Wen-Gang Ding
- Department of Anesthesiology, the Second Affiliated Hospital of the Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Chang-Chun Guo
- Department of Anesthesiology, the Second Affiliated Hospital of the Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Xiao-Guang Cui
- Department of Anesthesiology, the Second Affiliated Hospital of the Harbin Medical University, Harbin, Heilongjiang Province, China.
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Hu Y, Tao X, Han X, Xu L, Yin L, Sun H, Qi Y, Xu Y, Peng J. MicroRNA-351-5p aggravates intestinal ischaemia/reperfusion injury through the targeting of MAPK13 and Sirtuin-6. Br J Pharmacol 2018; 175:3594-3609. [PMID: 29952043 PMCID: PMC6086990 DOI: 10.1111/bph.14428] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 06/01/2018] [Accepted: 06/14/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND AND PURPOSE Intestinal ischaemia-reperfusion (II/R) injury is a serious clinical problem. Here we have investigated novel mechanisms and new drug targets in II/R injury by searching for microRNAs regulating such injury. EXPERIMENTAL APPROACH We used hypoxia/reoxygenation (H/R) of IEC-6 cell cultures and models of II/R models in rats and mice. Microarray assays were used to identify target miRNAs from rat intestinal. Real-time PCR, Western blot and dual luciferase reporter assays, and agomir and antagomir in vitro and in vivo were used to assess the effects of the target miRNA on II/R injury. KEY RESULTS The miR-351-5p was differentially expressed in our models and it targeted MAPK13 and sirtuin-6. This miRNA reduced levels of sirtuin-6 and AMP-activated protein kinase phosphorylation, and activated forkhead box O3 (FoxO3α) phosphorylation to cause oxidative stress. Also, miR-351-5p markedly reduced MAPK13 level, activated polycystic kidney disease 1/NF-κB signal and increased NF-κB (p65). Moreover, miR-351-5p up-regulated levels of Bcl2-associated X, cytochrome c, apoptotic peptidase activating factor 1, cleaved-caspase 3 and cleaved-caspase 9 by reducing sirtuin-6 levels to promote apoptosis. In addition, miR-351-5p mimic in IEC-6 cells and agomir in mice aggravated these effects, and miR-351-5p inhibitor and antagomir in mice alleviated these actions. CONCLUSIONS AND IMPLICATIONS Our data showed that miR-351-5p aggravated II/R injury by promoting intestinal mucosal oxidative stress, inflammation and apoptosis by targeting MAPK13 and sirtuin-6.These data provide new insights into the mechanisms regulating II/R injury, and of miR-351-5p could be considered as a novel therapeutic target for such injury.
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Affiliation(s)
- Yupeng Hu
- College of PharmacyDalian Medical UniversityDalianChina
| | - Xufeng Tao
- College of PharmacyDalian Medical UniversityDalianChina
| | - Xu Han
- College of PharmacyDalian Medical UniversityDalianChina
| | - Lina Xu
- College of PharmacyDalian Medical UniversityDalianChina
| | - Lianhong Yin
- College of PharmacyDalian Medical UniversityDalianChina
| | - Huijun Sun
- College of PharmacyDalian Medical UniversityDalianChina
| | - Yan Qi
- College of PharmacyDalian Medical UniversityDalianChina
| | - Youwei Xu
- College of PharmacyDalian Medical UniversityDalianChina
| | - Jinyong Peng
- College of PharmacyDalian Medical UniversityDalianChina
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Zhang W, Song JK, Zhang X, Zhou QM, He GR, Xu XN, Rong Y, Zhou WX, DU GH. Salvianolic acid A attenuates ischemia reperfusion induced rat brain damage by protecting the blood brain barrier through MMP-9 inhibition and anti-inflammation. Chin J Nat Med 2018; 16:184-193. [PMID: 29576054 DOI: 10.1016/s1875-5364(18)30046-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Indexed: 01/16/2023]
Abstract
Salvianolic acid A (SAA) is a water-soluble component from the root of Salvia Miltiorrhiza Bge, a traditional Chinese medicine, which has been used for the treatment of cerebrovascular diseases for centuries. The present study aimed to determine the brain protective effects of SAA against cerebral ischemia reperfusion injury in rats, and to figure out whether SAA could protect the blood brain barrier (BBB) through matrix metallopeptidase 9 (MMP-9) inhibition. A focal cerebral ischemia reperfusion model was induced by middle cerebral artery occlusion (MCAO) for 1.5-h followed by 24-h reperfusion. SAA was administered intravenously at doses of 5, 10, and 20 mg·kg-1. SAA significantly reduced the infarct volumes and neurological deficit scores. Immunohistochemical analyses showed that SAA treatments could also improve the morphology of neurons in hippocampus CA1 and CA3 regions and increase the number of neurons. Western blotting analyses showed that SAA downregulated the levels of MMP-9 and upregulated the levels of tissue inhibitor of metalloproteinase 1 (TIMP-1) to attenuate BBB injury. SAA treatment significantly prevented MMP-9-induced degradation of ZO-1, claudin-5 and occludin proteins. SAA also prevented cerebral NF-κB p65 activation and reduced inflammation response. Our results suggested that SAA could be a promising agent to attenuate cerebral ischemia reperfusion injury through MMP-9 inhibition and anti-inflammation activities.
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Affiliation(s)
- Wen Zhang
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Jun-Ke Song
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Xue Zhang
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Qi-Meng Zhou
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Guo-Rong He
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Xiao-Na Xu
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Yan Rong
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Wen-Xia Zhou
- Department of Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing 100850, China
| | - Guan-Hua DU
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
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Chen X, Patra A, Sadowska GB, Stonestreet BS. Ischemic-Reperfusion Injury Increases Matrix Metalloproteinases and Tissue Metalloproteinase Inhibitors in Fetal Sheep Brain. Dev Neurosci 2018; 40:234-245. [PMID: 30048980 DOI: 10.1159/000489700] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 04/29/2018] [Indexed: 12/31/2022] Open
Abstract
Hypoxic-ischemic brain injury is a leading cause of neurodevelopmental morbidities in preterm and full-term infants. Blood-brain barrier dysfunction represents an important component of perinatal hypoxic-ischemic brain injury. The extracellular matrix (ECM) is a vital component of the blood-brain barrier. Matrix metalloproteinases (MMPs) and tissue inhibitors of matrix metalloproteinases (TIMPs) are important ECM components. They contribute to brain development, blood-brain barrier maintenance, and to regenerative and repair processes after hypoxic-ischemic brain injury. We hypothesized that ischemia at different durations of reperfusion affects the ECM protein composition of MMPs and TIMPs in the cerebral cortex of fetal sheep. Cerebral cortical samples were snap-frozen from sham control fetuses at 127 days of gestation and from fetuses after exposure to 30-min carotid occlusion and 4-, 24-, and 48-h of reperfusion. Protein expression of MMP-2, -8, -9, and -13 and TIMP-1, -2, -3, and -4 was measured by Western immunoblotting along with the gelatinolytic activity of MMP-2 and MMP-9 by zymography. The expression of MMP-8 was increased (Kruskal-Wallis, p = 0.04) in fetuses 48 h after ischemia. In contrast, changes were not observed in the protein expression of MMP-2, -9, or -13. The gelatinolytic activity of pro-MMP-2 was increased (ANOVA, p = 0.02, Tukey HSD, p = 0.05) 24 h after ischemia. TIMP-1 and -3 expression levels were also higher (TIMP-1, ANOVA, p = 0.003, Tukey HSD, p = 0.01; TIMP-3, ANOVA, p = 0.006, Tukey HSD, p = 0.01) 24 h after ischemia compared with both the sham controls and with fetuses exposed to 4 h of reperfusion. The changes in the expression of TIMP-1, -2, and -3 correlated with the changes in the MMP-8 and -13 protein expression. We speculate that regulation of MMP-8, MMP-13, and TIMPs contributes to ECM remodeling after is chemic-reperfusion injury in the fetal brain.
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Liu J, Wang Q, Yang S, Huang J, Feng X, Peng J, Lin Z, Liu W, Tao J, Chen L. Electroacupuncture Inhibits Apoptosis of Peri-Ischemic Regions via Modulating p38, Extracellular Signal-Regulated Kinase (ERK1/2), and c-Jun N Terminal Kinases (JNK) in Cerebral Ischemia-Reperfusion-Injured Rats. Med Sci Monit 2018; 24:4395-4404. [PMID: 29943755 PMCID: PMC6048997 DOI: 10.12659/msm.908473] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 02/23/2018] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Previous studies suggested that inhibition of apoptosis prevents the dysfunction of ischemia-reperfusion injury. In the pathogenesis of ischemia-reperfusion injury, JNK/ERK1/2 and p38 play an essential role in regulation of cell apoptosis. Electroacupuncture (EA), a form of acupuncture, has demonstrated superiority in preventing ischemia-reperfusion injury, but the underlying mechanism is unclear. In the present study, we explored the effects of electroacupuncture at Shenting (GV24) and Baihui (GV20) acupoints on focal cerebral ischemia-reperfusion (MCAO) rats, and explored whether JNK/ERK1/2- and p38-mediated cell apoptosis are involved. MATERIAL AND METHODS The rats were divided into a sham operation control group, an ischemia group, and an electroacupuncture group with acupuncture applied for 10 days (30 min per day). TTC staining was used to calculate the ischemic brain volume. TUNEL staining and transmission electron microscopy were used to detect cell apoptosis. Western blot analysis and Bio-Plex were used to detect JNK, p38, ERK1/2, Bcl-2, and Bax protein expression. RESULTS We found that electroacupuncture at day 10 significantly reduced cerebral infarction. In addition, electroacupuncture suppressed activation of JNK and p38, while enhancing the activation of ERK1/2 in the peri-ischemic regions. Consequently, the effect of electroacupuncture on these pathways resulted in the inhibition of apoptosis, which was demonstrated by TUNEL and transmission electron microscopy. We found that electroacupuncture upregulated the anti-apoptotic Bcl-2/Bax ratio in peri-ischemic regions. CONCLUSIONS Our findings suggest that inhibition of cell apoptosis via regulating multiple signaling pathways might be a mechanism whereby electroacupuncture has a positive therapeutic effect on post-stroke impairment.
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Affiliation(s)
- Jiao Liu
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
- National-Local Joint Engineering Research Center of Rehabilitation Medicine Technology, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
| | - Qin Wang
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
| | - Shanli Yang
- Affiliated Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
| | - Jia Huang
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
| | - Xiaodong Feng
- First Affiliated Hospital, Henan University of Traditional Chinese Medicine, Zhengzhou, Henan, P.R. China
| | - Jun Peng
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
| | - Zhengkun Lin
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
| | - Weilin Liu
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
| | - Jing Tao
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
- National-Local Joint Engineering Research Center of Rehabilitation Medicine Technology, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
- Fujian Key Laboratory of Exercise Rehabilitation, Fuzhou, Fujian, P.R. China
| | - Lidian Chen
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
- National-Local Joint Engineering Research Center of Rehabilitation Medicine Technology, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
- Fujian Key Laboratory of Exercise Rehabilitation, Fuzhou, Fujian, P.R. China
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Poles MZ, Bódi N, Bagyánszki M, Fekete É, Mészáros AT, Varga G, Szűcs S, Nászai A, Kiss L, Kozlov AV, Boros M, Kaszaki J. Reduction of nitrosative stress by methane: Neuroprotection through xanthine oxidoreductase inhibition in a rat model of mesenteric ischemia-reperfusion. Free Radic Biol Med 2018; 120:160-169. [PMID: 29550332 DOI: 10.1016/j.freeradbiomed.2018.03.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/12/2018] [Accepted: 03/13/2018] [Indexed: 01/01/2023]
Abstract
Our aim was to characterize the main components of the nitrosative response with quantitative changes of the nitrergic myenteric neurons in adjacent intestinal segments after transient superior mesenteric artery occlusion. We also tested the hypothesis that exogenous methane may modulate the evolution of nitroxidation by influencing xanthine oxidoreductase (XOR) activity. The microcirculatory consequences of a 50 min ischemia or ischemia-reperfusion were investigated in anesthetized rats (n = 124) inhaling normoxic air with or without 2.2% methane. XOR activities, nitrogen monoxide (NO), nitrite/nitrate (NOx), and nitrotyrosine levels were measured, together with relative nitrergic neuron ratios from duodenum, ileum and colon samples. The effects of methane on XOR were also examined in vitro. The intramural flow stopped only in the ileum during ischemia. The highest baseline XOR activity was found in the duodenum, which increased further during ischemia. NO and nitrotyrosine levels rose, and the nNOS-immunopositive neuron ratio and NOx level both dropped. Reperfusion uniformly elevated XOR activity and nitrotyrosine formation, with the highest level attained in the duodenum, where the nitrergic neuron ratio remained depressed. These alterations were eliminated in methane-treated animals, XOR activity and nitrotyrosine formation decreased in all sites, and the duodenal nitrergic neuron ratio was re-established. The inhibitory effect of methane on XOR-linked nitrate reductase activity was also demonstrated in vitro. With segment-specific microcirculatory alterations, the risk for nitrosative stress is highest in transiently hypoxic tissues with high endogenous XOR activities. The XOR-inhibitory effect of methane can reduce nitroxidation and protects the nitrergic neuron population in such conditions.
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Affiliation(s)
- Marietta Zita Poles
- Institute of Surgical Research, Faculty of Medicine, University of Szeged, Szokefalvi-Nagy Bela u. 6., H-6720 Szeged, Hungary.
| | - Nikolett Bódi
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., H-6726, Szeged, Hungary.
| | - Mária Bagyánszki
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., H-6726, Szeged, Hungary.
| | - Éva Fekete
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., H-6726, Szeged, Hungary.
| | - András Tamás Mészáros
- Institute of Surgical Research, Faculty of Medicine, University of Szeged, Szokefalvi-Nagy Bela u. 6., H-6720 Szeged, Hungary.
| | - Gabriella Varga
- Institute of Surgical Research, Faculty of Medicine, University of Szeged, Szokefalvi-Nagy Bela u. 6., H-6720 Szeged, Hungary.
| | - Szilárd Szűcs
- Institute of Surgical Research, Faculty of Medicine, University of Szeged, Szokefalvi-Nagy Bela u. 6., H-6720 Szeged, Hungary.
| | - Anna Nászai
- Institute of Surgical Research, Faculty of Medicine, University of Szeged, Szokefalvi-Nagy Bela u. 6., H-6720 Szeged, Hungary.
| | - Liliána Kiss
- Institute of Surgical Research, Faculty of Medicine, University of Szeged, Szokefalvi-Nagy Bela u. 6., H-6720 Szeged, Hungary.
| | - Andrey V Kozlov
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Donaueschingenstraße 13, Vienna 1200, Austria.
| | - Mihály Boros
- Institute of Surgical Research, Faculty of Medicine, University of Szeged, Szokefalvi-Nagy Bela u. 6., H-6720 Szeged, Hungary.
| | - József Kaszaki
- Institute of Surgical Research, Faculty of Medicine, University of Szeged, Szokefalvi-Nagy Bela u. 6., H-6720 Szeged, Hungary.
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Li H, Han SJ, Kim M, Cho A, Choi Y, D'Agati V, Lee HT. Divergent roles for kidney proximal tubule and granulocyte PAD4 in ischemic AKI. Am J Physiol Renal Physiol 2018; 314:F809-F819. [PMID: 29357426 PMCID: PMC6031910 DOI: 10.1152/ajprenal.00569.2017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 12/05/2017] [Accepted: 12/05/2017] [Indexed: 02/06/2023] Open
Abstract
We previously demonstrated that kidney peptidylarginine deiminase-4 (PAD4) plays a critical role in ischemic acute kidney injury (AKI) in mice by promoting renal tubular inflammation and neutrophil infiltration (Ham A, Rabadi M, Kim M, Brown KM, Ma Z, D'Agati V, Lee HT. Am J Physiol Renal Physiol 307: F1052-F1062, 2014). Although the role of PAD4 in granulocytes including neutrophils is well known, we surprisingly observed profound renal proximal tubular PAD4 induction after renal ischemia-reperfusion (I/R) injury. Here we tested the hypothesis that renal proximal tubular PAD4 rather than myeloid-cell lineage PAD4 plays a critical role in exacerbating ischemic AKI by utilizing mice lacking PAD4 in renal proximal tubules (PAD4ff PEPCK Cre mice) or in granulocytes (PAD4ff LysM Cre mice). Mice lacking renal proximal tubular PAD4 were significantly protected against ischemic AKI compared with wild-type (PAD4ff) mice. Surprisingly, mice lacking PAD4 in myeloid cells were also protected against renal I/R injury although this protection was less compared with renal proximal tubular PAD4-deficient mice. Renal proximal tubular PAD4-deficient mice had profoundly reduced renal tubular apoptosis, whereas myeloid-cell PAD4-deficient mice showed markedly reduced renal neutrophil infiltration. Taken together, our studies suggest that both renal proximal tubular PAD4 as well as myeloid-cell lineage PAD4 play a critical role in exacerbating ischemic AKI. Renal proximal tubular PAD4 appears to contribute to ischemic AKI by promoting renal tubular apoptosis, whereas myeloid-cell PAD4 is preferentially involved in promoting neutrophil infiltration to the kidney and inflammation after renal I/R.
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Affiliation(s)
- Hongmei Li
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University , New York, New York
| | - Sang Jun Han
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University , New York, New York
| | - Mihwa Kim
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University , New York, New York
| | - Ahyeon Cho
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University , New York, New York
| | - Yewoon Choi
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University , New York, New York
| | - Vivette D'Agati
- Department of Pathology, College of Physicians and Surgeons of Columbia University , New York, New York
| | - H Thomas Lee
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University , New York, New York
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Wu J, Li R, Li W, Ren M, Thangthaeng N, Sumien N, Liu R, Yang S, Simpkins JW, Forster MJ, Yan LJ. Administration of 5-methoxyindole-2-carboxylic acid that potentially targets mitochondrial dihydrolipoamide dehydrogenase confers cerebral preconditioning against ischemic stroke injury. Free Radic Biol Med 2017; 113:244-254. [PMID: 29017857 PMCID: PMC5699942 DOI: 10.1016/j.freeradbiomed.2017.10.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 09/09/2017] [Accepted: 10/06/2017] [Indexed: 02/06/2023]
Abstract
The objective of this study was to investigate a possible role of mitochondrial dihydrolipoamide dehydrogenase (DLDH) as a chemical preconditioning target for neuroprotection against ischemic injury. We used 5-methoxyindole-2-carboxylic acid (MICA), a reportedly reversible DLDH inhibitor, as the preconditioning agent and administered MICA to rats mainly via dietary intake. Upon completion of 4 week's MICA treatment, rats underwent 1h transient ischemia and 24h reperfusion followed by tissue collection. Our results show that MICA protected the brain against ischemic stroke injury as the infarction volume of the brain from the MICA-treated group was significantly smaller than that from the control group. Data were then collected without or with stroke surgery following MICA feeding. It was found that in the absence of stroke following MICA feeding, DLDH activity was lower in the MICA treated group than in the control group, and this decreased activity could be partly due to DLDH protein sulfenation. Moreover, DLDH inhibition by MICA was also found to upregulate the expression of NAD(P)H-ubiquinone oxidoreductase 1(NQO1) via the Nrf2 signaling pathway. In the presence of stroke following MICA feeding, decreased DLDH activity and increased Nrf2 signaling were also observed along with increased NQO1 activity, decreased oxidative stress, decreased cell death, and increased mitochondrial ATP output. We also found that MICA had a delayed preconditioning effect four weeks post MICA treatment. Our study indicates that administration of MICA confers chemical preconditioning and neuroprotection against ischemic stroke injury.
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Affiliation(s)
- Jinzi Wu
- Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Rongrong Li
- Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Wenjun Li
- Center for Neuroscience Discovery, Institute for Healthy Aging, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Ming Ren
- Center for Neuroscience Discovery, Institute for Healthy Aging, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Nopporn Thangthaeng
- Center for Neuroscience Discovery, Institute for Healthy Aging, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Nathalie Sumien
- Center for Neuroscience Discovery, Institute for Healthy Aging, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Ran Liu
- Center for Neuroscience Discovery, Institute for Healthy Aging, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Shaohua Yang
- Center for Neuroscience Discovery, Institute for Healthy Aging, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - James W Simpkins
- Department of Physiology and Pharmacology, Center for Basic and Translational Stroke Research, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - Michael J Forster
- Center for Neuroscience Discovery, Institute for Healthy Aging, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Liang-Jun Yan
- Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA.
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Imarisio C, Alchera E, Bangalore Revanna C, Valente G, Follenzi A, Trisolini E, Boldorini R, Carini R. Oxidative and ER stress-dependent ASK1 activation in steatotic hepatocytes and Kupffer cells sensitizes mice fatty liver to ischemia/reperfusion injury. Free Radic Biol Med 2017; 112:141-148. [PMID: 28739531 DOI: 10.1016/j.freeradbiomed.2017.07.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/17/2017] [Accepted: 07/21/2017] [Indexed: 12/12/2022]
Abstract
UNLABELLED Steatosis intensifies hepatic ischemia/reperfusion (I/R) injury increasing hepatocyte damage and hepatic inflammation. This study evaluates if this process is associated to a differential response of steatotic hepatocytes (HP) and Kupffer cells (KC) to I/R injury and investigates the molecular mechanisms involved. Control or steatotic (treated with 50 μmol palmitic acid, PA) mouse HP or KC were exposed to hypoxia/reoxygenation (H/R). C57BL/6 mice fed 9 week with control or High Fat diet underwent to partial hepatic IR. PA increased H/R damage of HP and further activated the ASK1-JNK axis stimulated by ER stress during H/R. PA also induced the production of oxidant species (OS), and OS prevention nullified the capacity of PA to increase H/R damage and ASK1/JNK stimulation. ASK1 inhibition prevented JNK activation and entirely protected HP damage. In KC, PA directly activated ER stress, ASK1 and p38 MAPK and increased H/R damage. However, in contrast to HP, ASK1 inhibition further increased H/R damage by preventing p38 MAPK activation. In mice liver, steatosis induced the expression of activated ASK1 in only KC, whereas I/R exposure of steatotic liver activated ASK1 expression also in HP. "In vivo", ASK1 inhibition prevented ASK1, JNK and p38 MAPK activation and protected I/R damage and expression of inflammatory markers. CONCLUSIONS Lipids-induced ASK1 stimulation differentially affects HP and KC by promoting cytotoxic or protective signals. ASK1 increases H/R damage of HP by stimulating JNK and protects KC activating p38MAPK. These data support the potentiality of the therapeutic employment of ASK1 inhibitors that can antagonize the damaging effects of I/R upon fatty liver surgery by the contextual reduction of HP death and of KC-mediated reactions.
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Affiliation(s)
- Chiara Imarisio
- Department of Health Science, University of Piemonte Orientale, via Solaroli 17, 28100 Novara, Italy.
| | - Elisa Alchera
- Department of Health Science, University of Piemonte Orientale, via Solaroli 17, 28100 Novara, Italy.
| | | | - Guido Valente
- Department of Translational Medicine, University of Piemonte Orientale, 28100 Novara, Italy.
| | - Antonia Follenzi
- Department of Health Science, University of Piemonte Orientale, via Solaroli 17, 28100 Novara, Italy.
| | - Elena Trisolini
- Department of Health Science, University of Piemonte Orientale, via Solaroli 17, 28100 Novara, Italy.
| | - Renzo Boldorini
- Department of Health Science, University of Piemonte Orientale, via Solaroli 17, 28100 Novara, Italy.
| | - Rita Carini
- Department of Health Science, University of Piemonte Orientale, via Solaroli 17, 28100 Novara, Italy.
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Cao L, Zhang D, Chen J, Qin YY, Sheng R, Feng X, Chen Z, Ding Y, Li M, Qin ZH. G6PD plays a neuroprotective role in brain ischemia through promoting pentose phosphate pathway. Free Radic Biol Med 2017; 112:433-444. [PMID: 28823591 DOI: 10.1016/j.freeradbiomed.2017.08.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 08/02/2017] [Accepted: 08/14/2017] [Indexed: 10/19/2022]
Abstract
TIGAR-regulated pentose phosphate pathway (PPP) plays a critical role in the neuronal survival during cerebral ischemia/reperfusion. Glucose-6-phosphate dehydrogenase (G6PD) is a rate-limiting enzyme in PPP and thus, we hypothesized that it plays an essential role in anti-oxidative defense through producing NADPH. The present study investigated the regulation and the role of G6PD in ischemia/reperfusion-induced neuronal injury with in vivo and in vitro models of ischemic stroke. The results showed that the levels of G6PD mRNA and protein were increased after ischemia/reperfusion. In vivo, lentivirus-mediated G6PD overexpression in mice markedly reduced neuronal damage after ischemia/reperfusion insult, while lentivirus-mediated G6PD knockdown exacerbated it. In vitro, overexpression of G6PD in cultured primary neurons decreased neuronal injury under oxygen and glucose deprivation/reoxygenation (OGD/R) condition, whereas knockdown of G6PD aggravated it. Overexpression of G6PD increased levels of NADPH and reduced form of glutathione (rGSH), and ameliorated ROS-induced macromolecular damage. On the contrary, knockdown of G6PD executed the opposite effects in mice and in primary neurons. Supplementation of exogenous NADPH alleviated the detrimental effects of G6PD knockdown, whereas further enhanced the beneficial effects of G6PD overexpression in ischemic injury. Therefore, our results suggest that G6PD protects ischemic brain injury through increasing PPP. Thus G6PD may be considered as potential therapeutic target for treatment of ischemic brain injury.
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Affiliation(s)
- Lijuan Cao
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, College of Pharmaceutical Science, Soochow University, Suzhou 215123, China
| | - Dingmei Zhang
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, College of Pharmaceutical Science, Soochow University, Suzhou 215123, China
| | - Jieyu Chen
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, College of Pharmaceutical Science, Soochow University, Suzhou 215123, China
| | - Yuan-Yuan Qin
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, College of Pharmaceutical Science, Soochow University, Suzhou 215123, China
| | - Rui Sheng
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, College of Pharmaceutical Science, Soochow University, Suzhou 215123, China
| | - Xing Feng
- Institute of Pediatric Research, Children's Hospital of Soochow University; Suzhou 215025, China
| | - Zhong Chen
- Institute of Neuroscience, College of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Yuqiang Ding
- Key Laboratory of Arrhythmias, Ministry of Education, East Hospital, Tongji University School of Medicine, 1239 Siping Road, Shanghai 200092, China
| | - Mei Li
- Institute of Pediatric Research, Children's Hospital of Soochow University; Suzhou 215025, China.
| | - Zheng-Hong Qin
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, College of Pharmaceutical Science, Soochow University, Suzhou 215123, China.
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Unal B, Ozcan F, Tuzcu H, Kırac E, Elpek GO, Aslan M. Inhibition of neutral sphingomyelinase decreases elevated levels of nitrative and oxidative stress markers in liver ischemia-reperfusion injury. Redox Rep 2017; 22:147-159. [PMID: 27077455 PMCID: PMC6837382 DOI: 10.1080/13510002.2016.1162431] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Oxidative stress and excessive nitric oxide production via induction of inducible nitric oxide synthase (NOS)-2 have been shown in the pathogenesis of liver ischemia-reperfusion (IR) injury. Neutral sphingomyelinase (N-SMase)/ceramide pathway can regulate NOS2 expression therefore this study determined the role of selective N-SMase inhibition on nitrative and oxidative stress markers following liver IR injury. Selective N-SMase inhibitor was administered via intraperitoneal injections. Liver IR injury was created by clamping blood vessels supplying the median and left lateral hepatic lobes for 60 min, followed by 60 min reperfusion. Nitrative and oxidative stress markers were determined by evaluating NOS2 expression, protein nitration, nitrite/nitrate levels, 4-hydroxynonenal (HNE) formation, protein carbonyl levels and xanthine oxidase/xanthine dehydrogenase (XO/XDH) activity. Levels of sphingmyelin and ceramide in liver tissue were determined by an optimized multiple reaction monitoring method using ultra-fast liquid chromatography coupled with tandem mass spectrometry (MS/MS). Spingomyelin levels were significantly increased in all IR groups compared to controls. Treatment with a specific N-SMase inhibitor significantly decreased all measured ceramides in IR injury. NOS2 expression, nitrite/nitrate levels and protein nitration were significantly greater in IR injury and decreased with N-SMase inhibition. Treatment with a selective N-SMase inhibitor significantly decreased HNE formation, protein carbonyl levels and the hepatic conversion of XO. Data confirm the role of nitrative and oxidative injury in IR and highlight the protective effect of selective N-SMase inhibition. Future studies evaluating agents blocking N-SMase activity can facilitate the development of treatment strategies to alleviate oxidative injury in liver I/R injury.
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Affiliation(s)
- Betul Unal
- Department of Pathology, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Filiz Ozcan
- Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Hazal Tuzcu
- Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Ebru Kırac
- Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Gulsum O. Elpek
- Department of Pathology, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Mutay Aslan
- Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
- Correspondence to: Mutay Aslan, Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey.
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Yuan Q, Ren C, Xu W, Petri B, Zhang J, Zhang Y, Kubes P, Wu D, Tang W. PKN1 Directs Polarized RAB21 Vesicle Trafficking via RPH3A and Is Important for Neutrophil Adhesion and Ischemia-Reperfusion Injury. Cell Rep 2017; 19:2586-2597. [PMID: 28636945 PMCID: PMC5548392 DOI: 10.1016/j.celrep.2017.05.080] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 04/18/2017] [Accepted: 05/24/2017] [Indexed: 01/08/2023] Open
Abstract
Polarized vesicle transport plays an important role in cell polarization, but the mechanisms underlying this process and its role in innate immune responses are not well understood. Here, we describe a phosphorylation-regulated polarization mechanism that is important for neutrophil adhesion to endothelial cells during inflammatory responses. We show that the protein kinase PKN1 phosphorylates RPH3A, which enhances binding of RPH3A to guanosine triphosphate (GTP)-bound RAB21. These interactions are important for polarized localization of RAB21 and RPH3A in neutrophils, which leads to PIP5K1C90 polarization. Consistent with the roles of PIP5K1C90 polarization, the lack of PKN1 or RPH3A impairs neutrophil integrin activation, adhesion to endothelial cells, and infiltration in inflammatory models. Furthermore, myeloid-specific loss of PKN1 decreases tissue injury in a renal ischemia-reperfusion model. Thus, this study characterizes a mechanism for protein polarization in neutrophils and identifies a potential protein kinase target for therapeutic intervention in reperfusion-related tissue injury.
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Affiliation(s)
- Qianying Yuan
- Department of Pharmacology, Vascular Biology and Therapeutic Program, Yale School of Medicine, New Haven, CT 06520, USA
| | - Chunguang Ren
- Department of Pharmacology, Vascular Biology and Therapeutic Program, Yale School of Medicine, New Haven, CT 06520, USA
| | - Wenwen Xu
- Department of Pharmacology, Vascular Biology and Therapeutic Program, Yale School of Medicine, New Haven, CT 06520, USA
| | - Björn Petri
- Snyder Institute for Chronic Diseases Mouse Phenomics Resource Laboratory, University of Calgary, Calgary, AB T2N 4N1, Canada; Department of Microbiology, Immunology and Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Jiasheng Zhang
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06520, USA
| | - Yong Zhang
- Department of Pharmacology, Vascular Biology and Therapeutic Program, Yale School of Medicine, New Haven, CT 06520, USA
| | - Paul Kubes
- Snyder Institute for Chronic Diseases Mouse Phenomics Resource Laboratory, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Dianqing Wu
- Department of Pharmacology, Vascular Biology and Therapeutic Program, Yale School of Medicine, New Haven, CT 06520, USA.
| | - Wenwen Tang
- Department of Pharmacology, Vascular Biology and Therapeutic Program, Yale School of Medicine, New Haven, CT 06520, USA.
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Song L, Li D, Wang J, Meng C, Cui X. Effects of p38 mitogen-activated protein kinase on lung ischemia-reperfusion injury in diabetic rats. J Surg Res 2017; 216:9-17. [PMID: 28807219 DOI: 10.1016/j.jss.2017.03.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 02/02/2017] [Accepted: 03/23/2017] [Indexed: 11/20/2022]
Abstract
BACKGROUND Lung ischemia-reperfusion injury (LIRI) is a pathologic process that is observed in several clinical conditions, and p38 mitogen-activated protein kinase (MAPK) is involved. Diabetes mellitus (DM) results in an increased incidence of ischemia-induced organ damage. The aims of this study were to examine the effects of DM on LIRI in a rat model of DM and to explore the possible mechanisms in relation to the p38 MAPK pathway. METHODS Forty rats were randomly divided into the following five groups (n = 8 each): a control + sham group, a control + IR group (CIR), a DM + sham group, a DM + IR group (DIR), and a DM + IR + SB203580 group. The control and streptozotocin-induced diabetic rats underwent a sham operation or left hilum occlusion for 90 min followed by reperfusion for 4 h. SB203580 was used to inhibit the p38 MAPK pathway. The pulmonary oxygenation index, inflammatory cytokines in the serum, lung edema, histopathology, oxidant stress, apoptosis, and phosphorylated/total-p38 MAPK protein levels were measured. RESULTS The DIR group displayed greater concentrations of tumor necrosis factor-α, interleukin-6, and intercellular adhesion molecule-1 and increases in the wet weight-to-dry weight ratio, lung injury scores, malondialdehyde levels, and cellular apoptosis, and these effects were accompanied by lower pulmonary oxygenation compared with the CIR group (P < 0.05). In the DIR group, the expression levels of p38 MAPK protein were significantly upregulated compared with those of the CIR group. Additionally, all of these alterations were attenuated in the DM + IR + SB203580 group compared with the DIR group. CONCLUSIONS Diabetes exacerbates LIRI by activating the p38 MAPK pathway.
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Affiliation(s)
- Linlin Song
- Department of Anesthesiology (the Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine), the Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Di Li
- Department of Anesthesiology (the Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine), the Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Juan Wang
- Department of Anesthesiology (the Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine), the Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Chao Meng
- Department of Anesthesiology (the Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine), the Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Xiaoguang Cui
- Department of Anesthesiology (the Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine), the Second Affiliated Hospital, Harbin Medical University, Harbin, China.
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40
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Shvedova MV, Anfinogenova YD, Schepetkin IA, Atochin DN. [JUN N-TERMINAL KINASES AND THEIR PHARMACOLOGICAL MODULATION OF ISCHE-MIC AND REPERFUSION INJURY OF THE BRAIN]. Ross Fiziol Zh Im I M Sechenova 2017; 103:268-283. [PMID: 30199207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The article reviews the literature regarding the role of c-Jun-N-terminal kinases (JNK) and its inhibitors in brain damage in the settings of ischemia and reperfusion injury. The implication of JNK in signaling mechanisms involved in ischemia-reperfusion-induced cerebral injury are discussed. Described effects associated with JNK inhibition using synthetic and natural substances in experimental models of ischemic and reperfusion injury of the brain. Results of experimental studies demonstrated that JNK represent promising therapeutic targets for brain protection against ischemic stroke. However, multiple physiologic functions of various JNK family members do not allow for the systemic use of non-specific JNK inhibitors for therapeutic purposes. The authors conclude that the continuous search for selective inhibitors of JNK3 remains an important task.
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Zhang M, Yan H, Li S, Yang J. Rosmarinic acid protects rat hippocampal neurons from cerebral ischemia/reperfusion injury via the Akt/JNK3/caspase-3 signaling pathway. Brain Res 2017; 1657:9-15. [PMID: 27923634 DOI: 10.1016/j.brainres.2016.11.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 11/17/2016] [Accepted: 11/28/2016] [Indexed: 12/13/2022]
Abstract
Cerebral ischemia/reperfusion injury can result in neuronal death, which further results in brain damage and can even lead to death. Although recent studies showed that rosmarinic acid (RA) exerts neuroprotective effects and attenuates ischemia-induced brain injury and neuronal cell death, little is known about the precise mechanisms that occur during cerebral ischemia/reperfusion (I/R). Therefore, the aim of this study was to examine the underlying mechanism of the neuroprotective effects of RA against ischemic brain injury induced by cerebral I/R. Transient global brain ischemia was induced by 4-vessel occlusion in adult male Sprague-Dawley rats. We randomly divided rats into five groups: sham, I/R, I/R+RA, I/R+Vehicle and I/R+RA+LY. Open-field, closed-field and Morris water maze tests were carried our separately to examine the anxiety and cognitive behavior of each group. Cresyl violet staining was used to examine the survival of hippocampal CA1 pyramidal neurons. The levels of p-Akt, p-JNK3 and cleaved caspase-3 in the hippocampus were also examined by Western blotting. Our results showed that administration of RA protected locomotive ability, relieved anxiety behavior and protected cognitive ability in cerebral I/R-injured rats. Additionally, RA significantly protected neurons in the hippocampal CA1 region against cerebral I/R-induced damage. Furthermore, RA increased the phosphorylation of Akt1, downregulated the phosphorylation of JNK3 and reduced the expression of cleaved caspase-3. Finally, the Akt inhibitor LY294002 reversed all the protective effects of RA, indicating that RA protects neurons in the hippocampal CA1 region from ischemic damage through the Akt/JNK3/caspase-3 signaling pathway.
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Affiliation(s)
- Min Zhang
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, PR China
| | - Hui Yan
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, PR China
| | - Sumei Li
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, PR China
| | - Jun Yang
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, PR China.
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Yang H, Li L, Zhou K, Wang Y, Guan T, Chai C, Kou J, Yu B, Yan Y. Shengmai injection attenuates the cerebral ischemia/reperfusion induced autophagy via modulation of the AMPK, mTOR and JNK pathways. Pharm Biol 2016; 54:2288-2297. [PMID: 26983890 DOI: 10.3109/13880209.2016.1155625] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Context Shengmai injection (SMI) is a patented Chinese medicine originated from the ancient Chinese herbal compound Shengmai san, which is used extensively for the treatment of cardiovascular and cerebrovascular disease in the clinic. Objective To determine the neuroprotective effect of SMI, we investigated the effect of SMI on cerebral ischemia/reperfusion (I/R) injury in mice as well as the mechanisms underlying this effect. Materials and methods Right middle cerebral artery was occluded by inserting a thread through internal carotid artery for 1 h, and then reperfused for 24 h in mice. The neuroprotective effects were determined using transmission electron microscopic examination, the evaluation of infarct volume, neurological deficits and water brain content. Related mechanisms were evaluated by immunofluorescence staining and western blotting. SMI was injected intraperitoneally after 1 h of ischemia at doses of 1.42, 2.84 and 5.68 g/kg. The control group received saline as the SMI vehicle. Results Results showed that SMI (1.42, 2.84 and 5.68 g/kg) could significantly reduce the infarct volume, SMI (5.68 g/kg) could also significantly improve the neurological deficits, decreased brain water content, as well as the neuronal morphological changes. SMI (5.68g/kg) could significantly inhibit the expression of autophagy-related proteins: Beclin1 and LC3. It also reduced the increase in LC3-positive cells. SMI (5.68 g/kg) remarkably inhibited the phosphorylation of adenosine monophosphate activated protein kinase (AMPK), and down-regulated the phosphorylation of mammalian target of rapamycin (mTOR) and Jun N-terminal kinase (JNK) after 24 h of reperfusion. Discussion and conclusion The results indicate that SMI provides remarkable protection against cerebral ischemia/reperfusion injury, which may be partly due to the inhibition of autophagy and related signalling pathways.
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MESH Headings
- AMP-Activated Protein Kinases/metabolism
- Animals
- Autophagy/drug effects
- Beclin-1/metabolism
- Brain/drug effects
- Brain/enzymology
- Brain/physiopathology
- Brain/ultrastructure
- Brain Edema/prevention & control
- Disease Models, Animal
- Dose-Response Relationship, Drug
- Drug Combinations
- Drugs, Chinese Herbal/administration & dosage
- Enzyme Activation
- Infarction, Middle Cerebral Artery/enzymology
- Infarction, Middle Cerebral Artery/pathology
- Infarction, Middle Cerebral Artery/physiopathology
- Infarction, Middle Cerebral Artery/prevention & control
- Injections, Intraperitoneal
- JNK Mitogen-Activated Protein Kinases/metabolism
- Male
- Mice, Inbred C57BL
- Microscopy, Electron, Transmission
- Microtubule-Associated Proteins/metabolism
- Neuroprotective Agents/administration & dosage
- Phosphorylation
- Phytotherapy
- Plants, Medicinal
- Reperfusion Injury/enzymology
- Reperfusion Injury/pathology
- Reperfusion Injury/physiopathology
- Reperfusion Injury/prevention & control
- Signal Transduction/drug effects
- TOR Serine-Threonine Kinases/metabolism
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Affiliation(s)
- Haopeng Yang
- a Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Complex Prescription of TCM , China Pharmaceutical University , Nanjing , PR China
| | - Long Li
- a Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Complex Prescription of TCM , China Pharmaceutical University , Nanjing , PR China
| | - Kecheng Zhou
- a Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Complex Prescription of TCM , China Pharmaceutical University , Nanjing , PR China
| | - Yuqing Wang
- a Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Complex Prescription of TCM , China Pharmaceutical University , Nanjing , PR China
| | - Teng Guan
- a Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Complex Prescription of TCM , China Pharmaceutical University , Nanjing , PR China
| | - Chengzhi Chai
- a Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Complex Prescription of TCM , China Pharmaceutical University , Nanjing , PR China
| | - Junping Kou
- a Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Complex Prescription of TCM , China Pharmaceutical University , Nanjing , PR China
| | - Boyang Yu
- a Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Complex Prescription of TCM , China Pharmaceutical University , Nanjing , PR China
| | - Yongqing Yan
- a Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Complex Prescription of TCM , China Pharmaceutical University , Nanjing , PR China
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Ghadernezhad N, Khalaj L, Pazoki-Toroudi H, Mirmasoumi M, Ashabi G. Metformin pretreatment enhanced learning and memory in cerebral forebrain ischaemia: the role of the AMPK/BDNF/P70SK signalling pathway. Pharm Biol 2016; 54:2211-2219. [PMID: 26960058 DOI: 10.3109/13880209.2016.1150306] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Context Metformin induced AMP-activated protein kinase (AMPK) and protected neurons in cerebral ischaemia. Objective This study examined pretreatment with metformin and activation of AMPK in molecular and behavioral levels associated with memory. Materials and methods Rats were pretreated with metformin (200 mg/kg) for 2 weeks and 4-vessels occlusion global cerebral ischaemia was induced. Three days after ischaemia, memory improvement was done by passive avoidance task and neurological scores were evaluated. The amount of Brain-Derived Neurotropic Factor (BDNF) and phosphorylated and total P70S6 kinase (P70S6K) were measured. Results Pretreatment with metformin (met) in the met + ischaemia/reperfusion (I/R) group reduced latency time for enter to dark chamber compared with the sham group (p < 0.001) and increased latency time compared with the I/R group (p < 0.001). Injection of Compound C (CC) (as an AMPK inhibitor) concomitant with metformin reduced latency time in I/R rats compared with the I/R + met group (p < 0.05). Neurological scores were reduced in met treated rats compared with the sham group. Pretreatment with metformin in I/R animals reduced levels of pro-BDNF compared with the I/R group (p < 0.001) but increased that compared with the sham group (p < 0.001). The level of pro-BDNF decreased in the met + CC + I/R group compared with the met + I/R group (p < 0.01). Pretreatment with metformin in I/R animals significantly increased P70S6K compared with the I/R group (p < 0.001). Conclusion Short-term memory in ischaemic rats treated with metformin increased step-through latency; sensory-motor evaluation was applied and a group of ischaemia rats that were pretreated with metformin showed high levels of BDNF, P70S6K that seemed to be due to increasing AMPK.
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Affiliation(s)
- Negar Ghadernezhad
- a Neurobiology Research Center, Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Leila Khalaj
- b Medical School, Alborz University of Medical Sciences , Alborz , Iran
| | - Hamidreza Pazoki-Toroudi
- c Physiology Research Center and Department of Physiology, Faculty of Medicine , Iran University of Medical Sciences , Tehran , Iran
| | - Masoumeh Mirmasoumi
- d Neuroscience Research Center, Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Ghorbangol Ashabi
- e Physiology Research Center and Department of Physiology, School of Medicine , Ahvaz Jundishapur University of Medical Sciences , Ahvaz , Iran
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Wang Q, Yin J, Wang S, Cui D, Lin H, Ge M, Dai Z, Xie L, Si J, Ma K, Li L, Zhao L. Effects of activin A and its downstream ERK1/2 in oxygen and glucose deprivation after isoflurane-induced postconditioning. Biomed Pharmacother 2016; 84:535-543. [PMID: 27693962 DOI: 10.1016/j.biopha.2016.09.075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 09/17/2016] [Accepted: 09/20/2016] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Isoflurane postconditioning (ISPOC) plays a neuroprotection role in the brain. Previous studies confirmed that isoflurane postconditioning can provide better protection than preconditioning in acute hypoxic-ischemic brain damage, such as acute craniocerebral trauma and ischemic stroke. Numerous studies have reported that activin A can protect rat's brain from cell injury. However, whether activin A and its downstream ERK1/2 were involved in isoflurane postconditioning-induced neuroprotection is unknown. METHODS A total of 80 healthy Sprague-Dawley rats weighing 50-70g were randomly divided into 10 groups of 8: normal control, oxygen and glucose deprivation (OGD), 1.5% ISPOC, 3.0% ISPOC, 4.5% ISPOC, blocker of activin A (SB431542), blocker of ERK1/2 (U0126), 3.0% ISPOC+SB431542, 3.0% ISPOC+U0126, and vehicle (dimethyl sulfoxide(DMSO)) group. Blockers (SB431542 and U0126) were used in each concentration of isoflurane before OGD. Hematoxylin-eosin staining, 2,3,5-triphenyl tetrazolium chloride staining, and propidium iodide (PI) staining were conducted to assess the reliability in the brain slices. Immunofluorescence, Western blot, and quantitative real-time PCR(Q-PCR) were performed to validate the protein expression levels of activin A, Smad2/3, P-Smad2/3, ERK1/2, and phosphorylation ERK1/2 (P-ERK1/2). RESULTS The number of damaged neurons and mean fluorescence intensity(MFI) of PI staining increased, but formazan generation, expression levels of activin A and P-ERK1/2 protein, and mRNA synthesis level of activin A decreased in the OGD group compared with the normal control group (p<0.05). The number of damaged neurons and MFI of PI staining decreased, but formazan production, expression levels of activin A, P-Smad2/3, and P-ERK1/2, and mRNA synthesis level of activin A increased significantly in the 1.5% ISPOC and 3.0% ISPOC groups (p<0.05) compared with the OGD group. The result in the 4.5% ISPOC group, was completely opposite to the 1.5% ISPOC and 3.0% ISPOC groups. The number of damage neuron and MFI of PI staining increased, but formazan production, expression levels of activin A, P-Smad2/3, and P-ERK1/2, and mRNA synthesis level of activin A decreased in the 4.5% ISPOC group. However, the expression levels of activin A, P-Smad2/3, and P-ERK1/2, and mRNA synthesis level of activin A in the 4.5% ISPOC group were higher than the OGD group (p<0.05). The other results were compared between the SB431542 group/the U0126 group and 3.0% ISPOC group. The MFI of PI staining increased, but the expression levels of activin A, P-Smad2/3, and P-ERK1/2 decreased (p<0.05). The expression level of ERK1/2 protein in all groups exhibited no change (p>0.05). CONCLUSION Results of this study showed that 3.0% concentration of isoflurane postconditioning provided better neuroprotection than 1.5% and 4.5% concentrations of isoflurane. Activin A/Smad 2/3 and activin A/ERK1/2 signaling pathway may be involved in ISPOC-induced neuroprotection.
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Affiliation(s)
- Qin Wang
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832002, China.
| | - Jiangwen Yin
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832002, China.
| | - Sheng Wang
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832002, China.
| | - Di Cui
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832002, China
| | - Hong Lin
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832002, China
| | - Mingyue Ge
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832002, China
| | - Zhigang Dai
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832002, China
| | - Liping Xie
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832002, China
| | - Junqiang Si
- Department of Physiology, School of Medicine, Shihezi University and the Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi 832002, China
| | - Ketao Ma
- Department of Physiology, School of Medicine, Shihezi University and the Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi 832002, China
| | - Li Li
- Department of Physiology, School of Medicine, Shihezi University and the Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi 832002, China
| | - Lei Zhao
- Department of Physiology, School of Medicine, Shihezi University and the Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi 832002, China
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Chu MJJ, Premkumar R, Hickey AJR, Jiang Y, Delahunt B, Phillips ARJ, Bartlett ASJR. Steatotic livers are susceptible to normothermic ischemia-reperfusion injury from mitochondrial Complex-I dysfunction. World J Gastroenterol 2016; 22:4673-4684. [PMID: 27217699 PMCID: PMC4870074 DOI: 10.3748/wjg.v22.i19.4673] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 03/05/2016] [Accepted: 03/18/2016] [Indexed: 02/06/2023] Open
Abstract
AIM: To assess the effects of ischemic preconditioning (IPC, 10-min ischemia/10-min reperfusion) on steatotic liver mitochondrial function after normothermic ischemia-reperfusion injury (IRI).
METHODS: Sixty male Sprague-Dawley rats were fed 8-wk with either control chow or high-fat/high-sucrose diet inducing > 60% mixed steatosis. Three groups (n = 10/group) for each dietary state were tested: (1) the IRI group underwent 60 min partial hepatic ischemia and 4 h reperfusion; (2) the IPC group underwent IPC prior to same standard IRI; and (3) sham underwent the same surgery without IRI or IPC. Hepatic mitochondrial function was analyzed by oxygraphs. Mitochondrial Complex-I, Complex-II enzyme activity, serum alanine aminotransferase (ALT), and histological injury were measured.
RESULTS: Steatotic-IRI livers had a greater increase in ALT (2476 ± 166 vs 1457 ± 103 IU/L, P < 0.01) and histological injury following IRI compared to the lean liver group. Steatotic-IRI demonstrated lower Complex-I activity at baseline [78.4 ± 2.5 vs 116.4 ± 6.0 nmol/(min.mg protein), P < 0.001] and following IRI [28.0 ± 6.2 vs 104.3 ± 12.6 nmol/(min.mg protein), P < 0.001]. Steatotic-IRI also demonstrated impaired Complex-I function post-IRI compared to the lean liver IRI group. Complex-II activity was unaffected by hepatic steatosis or IRI. Lean liver mitochondrial function was unchanged following IRI. IPC normalized ALT and histological injury in steatotic livers but had no effect on overall steatotic liver mitochondrial function or individual mitochondrial complex enzyme activities.
CONCLUSION: Warm IRI impairs steatotic liver Complex-I activity and function. The protective effects of IPC in steatotic livers may not be mediated through mitochondria.
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Abstract
BACKGROUND Activators of PPARs, particularly PPARγ, may be effective neuroprotective drugs against inflammatory responses in cerebral ischemia and reperfusion injury. Ursolic acid (UA) may act as a PPARγ agonist and serve as an anti-inflammatory agent. In this study, we used a rat middle cerebral artery occlusion and reperfusion model to examine how UA acts as a neuroprotective agent to modulate the metalloprotease/anti-metalloprotease balance. METHODS The middle cerebral artery occlusion and reperfusion model (occlusion for 2 hours followed by reperfusion for 48 hours) was induced in male Sprague Dawley rats. UA was administered intragastrically 0.5, 24, and 47 hours after reperfusion. Bisphenol A diglycidyl ether (a PPARγ antagonist) was intraperitoneally administered 1, 24.5, and 47.5 hours after reperfusion. Forty-eight hours after reperfusion, neurological deficits and infarct volume were estimated. The PPARγ level and the metalloprotease/anti-metalloprotease balance were examined by Western blotting and immunohistochemistry. The activation of MAPK signaling pathways was also assessed. RESULTS UA-treated (5, 10, or 20 mg/kg) rats showed significant improvement in neurological deficit score, infarct volume, and the number of intact neurons compared with control rats (P<0.01). Both the PPARγ protein level and the percentage of PPARγ-positive cells were increased in the UA-treated groups (P<0.01). Compared with the control group, the UA-treated groups exhibited reduced protein levels of MMP2, MMP9, and activated MAPKs (P<0.01) but an increased level of TIMP1 (P<0.01). UA exerted its protective effects in a dose-dependent manner. Co-treatment with UA and bisphenol A diglycidyl ether completely abolished the UA-induced changes in PPARγ expression; however UA continued to exert a significant but partial neuroprotective effect. CONCLUSION UA can act as a PPARγ agonist to improve the metalloprotease/anti-metalloprotease balance, possibly by inhibiting the activation of the MAPK signaling pathway, thereby attenuating cerebral ischemia and reperfusion injury. Therefore, UA may serve as a novel neuroprotective therapeutic agent.
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Affiliation(s)
- Yanzhe Wang
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, People’s Republic of China
| | - Zhiyi He
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, People’s Republic of China
| | - Shumin Deng
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, People’s Republic of China
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Savchuk OI, Orlovsky MO, Iarmoliuk IS, Goncharov SV, Dosenko VE, Skibo GG. Proteasomal activity in brain tissue following ischemic stroke in Wistar rats. ACTA ACUST UNITED AC 2016; 61:11-20. [PMID: 26845839 DOI: 10.15407/fz61.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Functional as well as structural reorganization of brain tissues takes place in the surrounding and remotes brain areas after focal ischemic lesions. In particular, reactive or regenerative processes have been described to occur in the infarction areas and the contralateral hemisphere. Experiments were performed on 63 rats, divided into 3 groups (each consisted of 21 animals): sham operated, short-term occlusion of the right middle cerebral artery (MCAO) group, and long-term MCAO group. We have studied changes in proteasome proteolysis during transient occlusion of the middle cerebral artery using method of Koizumi J., duration 2 and 60 min and made the comparison between changes in different types of proteasome activity and severity of ischemic injury and showed three types of decrease inproteolytic activity (trypsin-, chymotrypsin-like, peptidylglutamyl peptide-hydrolyzing) in the brain tissues. Chymotrypsin-like activity of ischemic areas of the brain for short-term MCAO decreased 4.1 times compared with controls (P > 0.05), for long-term MCAO decreased 5.8 times compared with controls (P < 0.05). Trypsin-like activity of ischemic areas of brain for short-term MCAO decreased 7.1 times compared with controls (P > 0.05), for long-term MCAO decreased 12.5 times compared with controls (P < 0.05). PGPH activity of ischemic areas for short-term MCAO decreased 8 times compared with controls (P > 0.05), for long-term MCAO decreased 2.8 times compared with controls (P < 0.05). The similar dynamics was observed also in the penumbra and the core zone of the brain at 6 h of reperfusion, in the long run there is no significant difference between the core and contralateral zones. Our results suggest that proteasome activity may play also a role in contralateral cortical plasticity occurring after focal cerebral ischemia.
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Palladini G, Ferrigno A, Richelmi P, Perlini S, Vairetti M. Role of matrix metalloproteinases in cholestasis and hepatic ischemia/reperfusion injury: A review. World J Gastroenterol 2015; 21:12114-12124. [PMID: 26576096 PMCID: PMC4641129 DOI: 10.3748/wjg.v21.i42.12114] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 04/28/2015] [Accepted: 09/30/2015] [Indexed: 02/07/2023] Open
Abstract
Matrix metalloproteinases (MMPs) are a family of proteases using zinc-dependent catalysis to break down extracellular matrix (ECM) components, allowing cell movement and tissue reorganization. Like many other proteases, MMPs are produced as zymogens, an inactive form, which are activated after their release from cells. Hepatic ischemia/reperfusion (I/R) is associated with MMP activation and release, with profound effects on tissue integrity: their inappropriate, prolonged or excessive expression has harmful consequences for the liver. Kupffer cells and hepatic stellate cells can secrete MMPs though sinusoidal endothelial cells are a further source of MMPs. After liver transplantation, biliary complications are mainly attributable to cholangiocytes, which, compared with hepatocytes, are particularly susceptible to injury and ultimately a major cause of increased graft dysfunction and patient morbidity. This paper focuses on liver I/R injury and cholestasis and reviews factors and mechanisms involved in MMP activation together with synthetic compounds used in their regulation. In this respect, recent data have demonstrated that the role of MMPs during I/R may go beyond the mere destruction of the ECM and may be much more complex than previously thought. We thus discuss the role of MMPs as an important factor in cholestasis associated with I/R injury.
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Abstract
The epidermal growth factor receptor (EGFR) is linked to the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT) and Raf/mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK1/2) signaling pathways. During brain ischemia/reperfusion, EGFR could be transactivated, which stimulates these intracellular signaling cascades that either protect cells or potentiate cell injury. In the present study, we investigated the activation of EGFR, PI3K/AKT, and Raf/MAPK/ERK1/2 during ischemia or reperfusion of the brain using the middle cerebral artery occlusion model. We found that EGFR was phosphorylated and transactivated during both ischemia and reperfusion periods. During ischemia, the activity of PI3K/AKT pathway was significantly increased, as judged from the strong phosphorylation of AKT; this activation was suppressed by the inhibitors of EGFR and Zn-dependent metalloproteinase. Ischemia, however, did not induce ERK1/2 phosphorylation, which was dependent on reperfusion. Coimmunoprecipitation of Son of sevenless 1 (SOS1) with EGFR showed increased association between the receptor and SOS1 in ischemia, indicating the inhibitory node downstream of SOS1. The inhibitory phosphorylation site of Raf-1 at Ser259, but not its stimulatory phosphorylation site at Ser338, was phosphorylated during ischemia. Furthermore, ischemia prompted the interaction between Raf-1 and AKT, while both the inhibitors of PI3K and AKT not only abolished AKT phosphorylation but also restored ERK1/2 phosphorylation. All these findings suggest that Raf/MAPK/ERK1/2 signal pathway is inhibited by AKT via direct phosphorylation and inhibition at Raf-1 node during ischemia. During reperfusion, we observed a significant increase of ERK1/2 phosphorylation but no change in AKT phosphorylation. Inhibitors of reactive oxygen species and phosphatase and tensin homolog restored AKT phosphorylation but abolished ERK1/2 phosphorylation, suggesting that the reactive oxygen species-dependent increase in phosphatase and tensin homolog activity in reperfusion period relieves ERK1/2 from inhibition of AKT.
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Affiliation(s)
- Jing Zhou
- Laboratory of Metabolic Brain Diseases, Institute of Metabolic Disease Research and Drug Development, China Medical University, Shenyang, P. R. China
| | - Ting Du
- Laboratory of Metabolic Brain Diseases, Institute of Metabolic Disease Research and Drug Development, China Medical University, Shenyang, P. R. China
| | - Baoman Li
- Laboratory of Metabolic Brain Diseases, Institute of Metabolic Disease Research and Drug Development, China Medical University, Shenyang, P. R. China
| | - Yan Rong
- Laboratory of Metabolic Brain Diseases, Institute of Metabolic Disease Research and Drug Development, China Medical University, Shenyang, P. R. China
| | - Alexei Verkhratsky
- Faculty of Life Science, The University of Manchester, UK Achucarro Center for Neuroscience, IKERBASQUE, Basque Foundation for Science, Bilbao, Spain University of Nizhny Novgorod, Russia
| | - Liang Peng
- Laboratory of Metabolic Brain Diseases, Institute of Metabolic Disease Research and Drug Development, China Medical University, Shenyang, P. R. China
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Huang H, Chen YM, Zhu F, Tang ST, Xiao JD, Li LL, Lin XJ. Down-regulated Na(+)/K(+)-ATPase activity in ischemic penumbra after focal cerebral ischemia/reperfusion in rats. Int J Clin Exp Pathol 2015; 8:12708-12717. [PMID: 26722460 PMCID: PMC4680405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 09/22/2015] [Indexed: 06/05/2023]
Abstract
This study was aimed to examine whether the Na(+)/K(+) adenosine triphosphatase (Na(+)/K(+)-ATPase) activity in ischemic penumbra is associated with the pathogenesis of ischemia/reperfusion-induced brain injury. An experimental model of cerebral ischemia/reperfusion was made by transient middle cerebral artery occlusion (tMCAO) in rats and the changes of Na(+)/K(+)-ATPase activity in the ischemic penumbra was examined by Enzyme Assay Kit. Extensive infarction was observed in the frontal and parietal cortical and subcortical areas at 6 h, 24 h, 48 h, 3 d and 7 d after tMCAO. Enzyme Assay analyses revealed the activity of Na(+)/K(+)-ATPase was decreased in the ischemic penumbra of model rats after focal cerebral ischemia/reperfusion compared with sham-operated rats, and reduced to its minimum at 48 h, while the infarct volume was enlarged gradually. In addition, accompanied by increased brain water content, apoptosis-related bcl-2 and Bax proteins, apoptotic index and neurologic deficits Longa scores, but fluctuated the ratio of bcl-2/Bax. Correlation analysis showed that the infarct volume, apoptotic index, neurologic deficits Longa scores and brain water content were negatively related with Na(+)/K(+)-ATPase activity, while the ratio of bcl-2/Bax was positively related with Na(+)/K(+)-ATPase activity. Our results suggest that down-regulated Na(+)/K(+)-ATPase activity in ischemic penumbra might be involved in the pathogenesis of cerebral ischemia/reperfusion injury presumably through the imbalance ratio of bcl-2/Bax and neuronal apoptosis, and identify novel target for neuroprotective therapeutic intervention in cerebral ischemic disease.
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Affiliation(s)
- Hao Huang
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical UniversityChongqing, China
| | - Yang-Mei Chen
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical UniversityChongqing, China
| | - Fei Zhu
- Department of Neurology, People’s Hospital of Pingxiang CityPingxiang, Jiangxi Province, China
| | - Shi-Ting Tang
- Department of Neurology, People’s Hospital of Guangxi Zhuang Autonomous RegionNanning, China
| | - Ji-Dong Xiao
- Department of Neurology, People’s Hospital of Guangxi Zhuang Autonomous RegionNanning, China
| | - Lv-Li Li
- Department of Neurology, People’s Hospital of Guangxi Zhuang Autonomous RegionNanning, China
| | - Xin-Jing Lin
- Department of Neurology, People’s Hospital of Guangxi Zhuang Autonomous RegionNanning, China
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