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Sadik Cogal, Aysegul Oksuz. Enhanced Electrocatalytic Activity of Thiophene-Substituted Asymmetric Porphyrin Film for Electrochemical Determination of Dopamine. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024420130087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Götz R, Ly KH, Wrzolek P, Dianat A, Croy A, Cuniberti G, Hildebrandt P, Schwalbe M, Weidinger IM. Influence of Mesityl and Thiophene Peripheral Substituents on Surface Attachment, Redox Chemistry, and ORR Activity of Molecular Iron Porphyrin Catalysts on Electrodes. Inorg Chem 2019; 58:10637-10647. [DOI: 10.1021/acs.inorgchem.9b00043] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Robert Götz
- Faculty of Chemistry and Food Chemistry, Dresden University of Technology, 01062 Dresden, Germany
| | - Khoa H. Ly
- Faculty of Chemistry and Food Chemistry, Dresden University of Technology, 01062 Dresden, Germany
| | - Pierre Wrzolek
- Institute of Chemistry, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - Arezoo Dianat
- Institute for Materials Science and Max Bergmann Center of Biomaterials, Dresden University of Technology, 01062 Dresden, Germany
| | - Alexander Croy
- Institute for Materials Science and Max Bergmann Center of Biomaterials, Dresden University of Technology, 01062 Dresden, Germany
| | - Giancarlo Cuniberti
- Center for Advancing Electronics, Dresden Center for Computational Materials Science, Dresden University of Technology, 01062 Dresden, Germany
| | - Peter Hildebrandt
- Institute of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Matthias Schwalbe
- Institute of Chemistry, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - Inez M. Weidinger
- Faculty of Chemistry and Food Chemistry, Dresden University of Technology, 01062 Dresden, Germany
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MATSUOKA R, KOBAYASHI C, KUROSAWA A, SUZUKI M, NAKAYAMA E, TAKAHASHI A, AOYAGI S, AIKAWA T, KONDO T, KASAI S, YUASA M. Dual O 2−•/NO Sensor Fabricated from an Electrode Modified with Polymerized Iron Porphyrin. BUNSEKI KAGAKU 2018. [DOI: 10.2116/bunsekikagaku.67.511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | - Chihiro KOBAYASHI
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
| | - Akihisa KUROSAWA
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
| | - Misa SUZUKI
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
| | - Eri NAKAYAMA
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
| | - Akemi TAKAHASHI
- Research Institute for Science and Technology, Tokyo University of Science
| | | | - Tatsuo AIKAWA
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
| | - Takeshi KONDO
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
- Research Institute for Science and Technology, Tokyo University of Science
| | - Shigenobu KASAI
- Graduate Department of Environmental Information Engineering, Tohoku Institute of Technology
- Biomedical Engineering Research Center, Tohoku Institute of Technology
| | - Makoto YUASA
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
- Research Institute for Science and Technology, Tokyo University of Science
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Neumann B, Götz R, Wrzolek P, Scheller FW, Weidinger IM, Schwalbe M, Wollenberger U. Enhancement of the Electrocatalytic Activity of Thienyl‐Substituted Iron Porphyrin Electropolymers by a Hangman Effect. ChemCatChem 2018. [DOI: 10.1002/cctc.201800934] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bettina Neumann
- Institute for Biochemistry and BiologyUniversity Potsdam Karl-Liebknecht-Str. 24–25 Potsdam 14476 Germany
| | - Robert Götz
- Department of Chemistry and Food ChemistryTechnische Universität Dresden Zellescher Weg 19 Dresden 01069 Germany
| | - Pierre Wrzolek
- Institute for ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Str. 2 Berlin 12489 Germany
| | - Frieder W. Scheller
- Institute for Biochemistry and BiologyUniversity Potsdam Karl-Liebknecht-Str. 24–25 Potsdam 14476 Germany
| | - Inez M. Weidinger
- Department of Chemistry and Food ChemistryTechnische Universität Dresden Zellescher Weg 19 Dresden 01069 Germany
| | - Matthias Schwalbe
- Institute for ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Str. 2 Berlin 12489 Germany
| | - Ulla Wollenberger
- Institute for Biochemistry and BiologyUniversity Potsdam Karl-Liebknecht-Str. 24–25 Potsdam 14476 Germany
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Matsuoka R, Kobayashi C, Nakagawa A, Aoyagi S, Aikawa T, Kondo T, Kasai S, Yuasa M. A Reactive Oxygen/Nitrogen Species Sensor Fabricated from an Electrode Modified with a Polymerized Iron Porphyrin and a Polymer Electrolyte Membrane. ANAL SCI 2017; 33:911-915. [PMID: 28794327 DOI: 10.2116/analsci.33.911] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We have developed an electrochemical reactive oxygen/nitrogen species sensor that can detect superoxide anion radicals (O2-•) and nitric oxide (NO). The reactive oxygen/nitrogen species sensor was fabricated by surface modification of an electrode with polymerized iron tetrakis(3-thienyl)porphyrin (FeT3ThP), and it can detect either O2-• or NO by switching the applied potential. Furthermore, we fabricated a sensor with improved selectivity by coating a Nafion® film onto the poly(FeT3ThP)-modified electrode. An interference current caused by NO2- was seen for the poly(FeT3ThP)-modified electrode, while the interference current was significantly reduced at the Nafion®/poly(FeT3ThP)-modified electrode, leading to improved selectivity for NO detection. The current response at the Nafion®/poly(FeT3ThP)-modified electrode exhibited good linearity in the O2-• and NO concentration ranges 1.3 - 4.1, and 0.5 - 10 μM, respectively. The Nafion®/poly(FeT3ThP)-modified and poly(FeT3ThP)-modified electrodes are highly versatile, because these electrodes can detect either O2-• or NO by switching the applied potential. Since the Nafion®/poly(FeT3ThP)-modified and poly(FeT3ThP)-modified electrodes contain no bio-derived compounds, the reactive oxygen/nitrogen species sensor should be safe even when it is used in vivo.
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Affiliation(s)
| | - Chihiro Kobayashi
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
| | - Atsushi Nakagawa
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
| | | | - Tatsuo Aikawa
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
| | - Takeshi Kondo
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science.,Research Institute for Science and Technology, Tokyo University of Science
| | - Shigenobu Kasai
- Graduate Department of Environmental Information Engineering, Tohoku Institute of Technology.,Biomedical Engineering Research Center, Tohoku Institute of Technology
| | - Makoto Yuasa
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science.,Research Institute for Science and Technology, Tokyo University of Science
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Prasath R, Bhavana P. Conformational features of meso-tetrathienylporphyrins and photosensitising properties of their β-1-acetyl-2-oxopropyl derivatives. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Liu X, Dumitrescu E, Andreescu S. Electrochemical Biosensors for Real-Time Monitoring of Reactive Oxygen and Nitrogen Species. ACS SYMPOSIUM SERIES 2015. [DOI: 10.1021/bk-2015-1200.ch013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xiaobo Liu
- Department of Chemistry & Biomolecular Science, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699-5810
| | - Eduard Dumitrescu
- Department of Chemistry & Biomolecular Science, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699-5810
| | - Silvana Andreescu
- Department of Chemistry & Biomolecular Science, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699-5810
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Hyperoxia suppresses excessive superoxide anion radical generation in blood, oxidative stress, early inflammation, and endothelial injury in forebrain ischemia/reperfusion rats: laboratory study. Shock 2011; 34:299-305. [PMID: 20016404 DOI: 10.1097/shk.0b013e3181ceeeec] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This study used an electrochemical O2. sensor to investigate the effects of hyperoxia on generation of the superoxide radical (O2.) in the jugular vein during forebrain I/R in rats. Twenty-eight male Wistar rats were allocated to a sham group (n = 7; sham-treated rats with inspired oxygen fraction [FiO2] of 0.4), a hemorrhagic shock and reperfusion (HS/R) group (n = 7; HS without carotid artery occlusion and reperfusion with FiO2 of 0.4), a normoxia group (n = 7; forebrain ischemia produced by bilateral carotid arteries occlusion with HS and reperfusion with FiO2 of 0.4), and a hyperoxia group (n = 7; forebrain ischemia with FiO2 of 0.4 and reperfusion with FiO2 of 1.0). The jugular venous O2. current was measured for 10 min during forebrain ischemia and for 120 min after reperfusion. The O2. current increased gradually during forebrain ischemia in the three groups other than the sham group. Immediately after reperfusion, the current showed a marked increase in the normoxia group and a pronounced decrease in the hyperoxia group. Levels of brain and plasma malondialdehyde, high-mobility group box 1 protein, and intercellular adhesion molecule 1 were significantly attenuated in the hyperoxia group relative to those in the normoxia group. In conclusion, hyperoxia suppressed jugular venous O2. generation and malondialdehyde, high-mobility group box 1, and intercellular adhesion molecule 1 in the brain and plasma in the acute phase of cerebral I/R. Thus, the administration of 100% oxygen immediately after reperfusion suppresses oxidative stress and early inflammation in cerebral I/R.
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Heinze J, Frontana-Uribe BA, Ludwigs S. Electrochemistry of conducting polymers--persistent models and new concepts. Chem Rev 2010; 110:4724-71. [PMID: 20557047 DOI: 10.1021/cr900226k] [Citation(s) in RCA: 632] [Impact Index Per Article: 45.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jürgen Heinze
- Institute for Physical Chemistry, University of Freiburg, 79104 Freiburg, Germany.
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Koga Y, Fujita M, Tsuruta R, Koda Y, Nakahara T, Yagi T, Aoki T, Kobayashi C, Izumi T, Kasaoka S, Yuasa M, Maekawa T. Urinary trypsin inhibitor suppresses excessive superoxide anion radical generation in blood, oxidative stress, early inflammation, and endothelial injury in forebrain ischemia/reperfusion rats. Neurol Res 2010; 32:925-32. [PMID: 20223106 DOI: 10.1179/016164110x12645013515133] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES To investigate the effects of ulinastatin, a urinary trypsin inhibitor (UTI), on jugular venous superoxide radical (O₂⁻·) generation, oxidative stress, early inflammation, and endothelial activation in forebrain ischemia/reperfusion (FBI/R) rats. METHODS Fourteen Wistar rats were allocated to a control group (n = 7) and a UTI group (n = 7). Throughout the experiments, O₂⁻· in the jugular vein was measured by the produced current using a novel electrochemical O₂⁻· sensor. Forebrain ischemia was induced by occlusion of the bilateral common caroti darteries with hemorrhagic hypotension for 20 min, followed by reperfusion. In the UTI group, UTI (5 U/g) was administered intravenously immediately after reperfusion. At 60 min after reperfusion, plasma and brain were harvested, and malondialdehyde, high-mobility group box 1 (HMGB1) protein, and intercellular adhesion molecule-1 (ICAM-1) were measured. RESULTS O₂⁻· current increased gradually during forebrain ischemia in both groups. The current increased markedly in the control group immediately after reperfusion but was significantly attenuated in the UTI group after reperfusion. Brain and plasma malondialdehyde, HMGB1, and ICAM-1 were significantly attenuated in the UTI group compared with those in the control group, except for brain HMGB1, which was associated with the amount of O₂⁻· generated during FBI/R. DISCUSSION UTI suppressed jugular venous O₂⁻· generation, oxidative stress, early inflammation, and endothelial activation in FBI/R rats. Therefore, UTI might be a useful agent for the therapy of the cerebral ischemia/reperfusion pathophysiology.
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Affiliation(s)
- Yasutaka Koga
- Advanced Medical Emergency and Critical Care Center, Yamaguchi University Hospital, Japan
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Todani M, Fujita M, Tsuruta R, Nakahara T, Yagi T, Oshima C, Igarashi M, Takahashi K, Kasaoka S, Yuasa M, Maekawa T. Moderate hypothermia suppressed excessive generation of superoxide anion radical and inflammatory reactions in blood and liver in heatstroke: Laboratory study in rats. Free Radic Res 2010; 44:462-72. [DOI: 10.3109/10715761003610752] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Tanaka R, Fujita M, Tsuruta R, Fujimoto K, Aki HS, Kumagai K, Aoki T, Kobayashi A, Izumi T, Kasaoka S, Yuasa M, Maekawa T. Urinary trypsin inhibitor suppresses excessive generation of superoxide anion radical, systemic inflammation, oxidative stress, and endothelial injury in endotoxemic rats. Inflamm Res 2010; 59:597-606. [PMID: 20148283 DOI: 10.1007/s00011-010-0166-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2009] [Revised: 01/21/2010] [Accepted: 01/25/2010] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVE AND DESIGN The protective effects of ulinastatin, a human urinary trypsin inhibitor (UTI), against superoxide radical (O(2)(-*)) generation, systemic inflammation, lipid peroxidation, and endothelial injury were investigated in endotoxemic rats. MATERIALS AND TREATMENT Twenty-one Wistar rats were allocated to a control group, a UTI group, and a sham group. A bolus of lipopolysaccharide (LPS; 3 microg/g) was administered intravenously to the control group, a bolus of LPS and UTI (5 U/g) to the UTI group, and a bolus of saline to the sham group. METHODS The O(2)(-*) generated was measured as the current in the right atrium using an electrochemical O(2)(-*) sensor. Plasma nitrite, high mobility group box 1 (HMGB1), tumor necrosis factor (TNF)-alpha, interleukin (IL)-6, malondialdehyde, and soluble intercellular adhesion molecule-1 (sICAM-1) were measured 360 min after LPS administration. RESULTS The O(2)(-*) current increased in the control group and was significantly attenuated in the UTI group after 55 min (P < 0.05 at 55-60 min, P < 0.01 at 65-360 min). Plasma nitrite, HMGB1, TNF-alpha, IL-6, malondialdehyde, and sICAM-1 were attenuated in the UTI group. CONCLUSIONS UTI suppressed excessive O(2)(-*) generation, systemic inflammation, lipid peroxidation, and endothelial injury in endotoxemic rats.
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Affiliation(s)
- Ryo Tanaka
- Advanced Medical Emergency and Critical Care Center, Yamaguchi University Hospital, Ube, Yamaguchi, Japan
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Hyperglycemia enhances excessive superoxide anion radical generation, oxidative stress, early inflammation, and endothelial injury in forebrain ischemia/reperfusion rats. Brain Res 2010; 1309:155-63. [DOI: 10.1016/j.brainres.2009.10.065] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2009] [Revised: 10/26/2009] [Accepted: 10/27/2009] [Indexed: 01/04/2023]
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Boyle NM, Rochford J, Pryce MT. Thienyl—Appended porphyrins: Synthesis, photophysical and electrochemical properties, and their applications. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.09.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kutsuna S, Tsuruta R, Fujita M, Todani M, Yagi T, Ogino Y, Igarashi M, Takahashi K, Izumi T, Kasaoka S, Yuasa M, Maekawa T. Cholinergic agonist physostigmine suppresses excessive superoxide anion radical generation in blood, oxidative stress, early inflammation, and endothelial injury in rats with forebrain ischemia/reperfusion. Brain Res 2009; 1313:242-9. [PMID: 19968973 DOI: 10.1016/j.brainres.2009.11.077] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2009] [Revised: 11/25/2009] [Accepted: 11/29/2009] [Indexed: 12/25/2022]
Abstract
The cholinergic anti-inflammatory pathway is reportedly important in modulating the inflammatory response in local and systemic diseases, including ischemia/reperfusion pathophysiology. In this study, we investigated the effects of the cholinergic agonist, physostigmine, on jugular venous superoxide radical (O(2)(-)) generation, oxidative stress, early inflammation, and endothelial activation during forebrain ischemia/reperfusion (FBI/R) in rats. Fourteen male Wistar rat were allocated to the control group (n=7) or physostigmine group (n=7). The physostigmine group received 80 ng/g physostigmine intraperitoneally 24 h and 1 h before forebrain ischemia was established. The jugular venous O(2)(-) current was measured for 10 min during forebrain ischemia and for 120 min after reperfusion. The O(2)(-) current increased gradually during forebrain ischemia in both groups. The current increased markedly immediately after reperfusion in the control group but was significantly attenuated in the physostigmine group after reperfusion. Brain and plasma malondialdehyde, high-mobility group box 1 (HMGB1) protein, and intercellular adhesion molecule 1 (ICAM1) were significantly attenuated in the physostigmine group compared with the control group, except for brain HMGB1. The amount of O(2)(-) generated during FBI/R correlated with malondialdehyde, HMGB1, and ICAM1 in both the brain and plasma. In conclusion, the cholinergic agonist physostigmine suppressed jugular venous O(2)(-) generation, oxidative stress, early inflammation, and endothelial activation in the brain and plasma in the acute phase of cerebral ischemia/reperfusion. Therefore, the suppression of O(2)(-) is a key mechanism of the cholinergic anti-inflammatory pathway in the pathophysiology of cerebral ischemia/reperfusion.
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Affiliation(s)
- Satoshi Kutsuna
- Advanced Medical Emergency and Critical Care Center, Yamaguchi University Hospital, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
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Koda Y, Tsuruta R, Fujita M, Miyauchi T, Kaneda K, Todani M, Aoki T, Shitara M, Izumi T, Kasaoka S, Yuasa M, Maekawa T. Moderate hypothermia suppresses jugular venous superoxide anion radical, oxidative stress, early inflammation, and endothelial injury in forebrain ischemia/reperfusion rats. Brain Res 2009; 1311:197-205. [PMID: 19931227 DOI: 10.1016/j.brainres.2009.11.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Revised: 11/09/2009] [Accepted: 11/11/2009] [Indexed: 10/20/2022]
Abstract
The aim of this study was to assess the effect of moderate hypothermia (MH) on generation of jugular venous superoxide radical (O2-.), oxidative stress, early inflammation, and endothelial injury in forebrain ischemia/reperfusion (FBI/R) rats. Twenty-one Wistar rats were allocated to a control group (n=7, 37 degrees C), a pre-MH group (n=7, 32 degrees C before ischemia), and a post-MH group (n=7, 32 degrees C after reperfusion). MH was induced before induction of ischemia in the pre-MH group and just after reperfusion in the post-MH group. Forebrain ischemia was induced by occlusion of bilateral common carotid arteries with hemorrhagic hypotension for 10 min, followed by reperfusion. O(2)(-)(.) in the jugular vein was measured from the produced current using a novel O2-. sensor. The O2-. current showed a gradual increase during forebrain ischemia in the control and post-MH groups but was attenuated in the pre-MH group. Following reperfusion, the current showed a marked increase in the control group but was strongly attenuated in the pre- and post-MH groups. Concentrations of malondialdehyde, high-mobility group box 1 (HMGB1) protein, and intercellular adhesion molecule-1 (ICAM-1) in the brain and plasma 120 min after reperfusion in the pre- and post-MH groups were significantly lower than those in the control group, except for plasma HMGB1 in the post-MH group. In conclusion, MH suppressed O2-. measured in the jugular vein, oxidative stress, early inflammation, and endothelial injury in FBI/R rats.
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Affiliation(s)
- Yoichi Koda
- Advanced Medical Emergency and Critical Care Center, Yamaguchi University Hospital, 1-1-1, Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
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Fujita M, Tsuruta R, Kasaoka S, Fujimoto K, Tanaka R, Oda Y, Nanba M, Igarashi M, Yuasa M, Yoshikawa T, Maekawa T. In vivo real-time measurement of superoxide anion radical with a novel electrochemical sensor. Free Radic Biol Med 2009; 47:1039-48. [PMID: 19616620 DOI: 10.1016/j.freeradbiomed.2009.07.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2008] [Revised: 07/01/2009] [Accepted: 07/09/2009] [Indexed: 11/20/2022]
Abstract
The dynamics of superoxide anion (O(2)(-)) in vivo remain to be clarified because no appropriate method exists to directly and continuously monitor and evaluate O(2)(-) in vivo. Here, we establish an in vivo method using a novel electrochemical O(2)(-) sensor. O(2)(-) generated is measured as a current and evaluated as a quantified partial value of electricity (Q(part)), which is calculated by integration of the difference between the baseline and the actual reacted current. The accuracy and efficacy of this method were confirmed by dose-dependent O(2)(-) generation in xanthine-xanthine oxidase in vitro in phosphate-buffered saline and human blood. It was then applied to endotoxemic rats in vivo. O(2)(-) current began to increase 1 h after lipopolysaccharide, and Q(part) increased significantly for 6 h in endotoxemic rats, in comparison to sham-treated rats. These values were attenuated by superoxide dismutase. The generation and attenuation of O(2)(-) were indirectly confirmed by plasma lipid peroxidation with malondialdehyde, endothelial injury with soluble intercellular adhesion molecule-1, and microcirculatory dysfunction. This is a novel method for measuring O(2)(-) in vivo and could be used to monitor and treat the pathophysiology caused by excessive O(2)(-) generation in animals and humans.
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Affiliation(s)
- Motoki Fujita
- Advanced Medical Emergency and Critical Care Center, Yamaguchi University Hospital, Ube 755-8505, Japan.
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Ono T, Tsuruta R, Fujita M, Aki HS, Kutsuna S, Kawamura Y, Wakatsuki J, Aoki T, Kobayashi C, Kasaoka S, Maruyama I, Yuasa M, Maekawa T. Xanthine oxidase is one of the major sources of superoxide anion radicals in blood after reperfusion in rats with forebrain ischemia/reperfusion. Brain Res 2009; 1305:158-67. [PMID: 19781528 DOI: 10.1016/j.brainres.2009.09.061] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2009] [Revised: 09/14/2009] [Accepted: 09/15/2009] [Indexed: 12/13/2022]
Abstract
We recently reported that excessive superoxide anion radical (O(2)(-)) was generated in the jugular vein during reperfusion in rats with forebrain ischemia/reperfusion using a novel electrochemical sensor and excessive O(2)(-) generation was associated with oxidative stress, early inflammation, and endothelial injury. However, the source of O(2)(-) was still unclear. Therefore, we used allopurinol, a potent inhibitor of xanthine oxidase (XO), to clarify the source of O(2)(-) generated in rats with forebrain ischemia/reperfusion. The increased O(2)(-) current and the quantified partial value of electricity (Q), which was calculated by the integration of the current, were significantly attenuated after reperfusion by pretreatment with allopurinol. Malondialdehyde (MDA) in the brain and plasma, high-mobility group box 1 (HMGB1) in plasma, and intercellular adhesion molecule-1 (ICAM-1) in the brain and plasma were significantly attenuated in rats pretreated with allopurinol with dose-dependency in comparison to those in control rats. There were significant correlations between total Q and MDA, HMGB, or ICAM-1 in the brain and plasma. Allopurinol pretreatment suppressed O(2)(-) generation in the brain-perfused blood in the jugular vein, and oxidative stress, early inflammation, and endothelial injury in the acute phase of forebrain ischemia/reperfusion. Thus, XO is one of the major sources of O(2)(-)- in blood after reperfusion in rats with forebrain ischemia/reperfusion.
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Affiliation(s)
- Takeru Ono
- Advanced Medical Emergency and Critical Care Center, Yamaguchi University Hospital, 1-1-1, Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
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Elevation of jugular venous superoxide anion radical is associated with early inflammation, oxidative stress, and endothelial injury in forebrain ischemia–reperfusion rats. Brain Res 2009; 1292:180-90. [DOI: 10.1016/j.brainres.2009.07.054] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2009] [Revised: 07/13/2009] [Accepted: 07/16/2009] [Indexed: 11/23/2022]
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Choi SH, Kim K, Jeon J, Meka B, Bucella D, Pang K, Khatua S, Lee J, Churchill DG. Optical Effects of S-Oxidation and Mn+ Binding in meso-Thienyl Dipyrrin Systems and of Stepwise Bromination of 4,4-Difluoro-8-(2,5-dibromo-3-thienyl)-4-bora-3a,4a-diaza-s-indacene. Inorg Chem 2008; 47:11071-83. [DOI: 10.1021/ic801354y] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shin Hei Choi
- Molecular Logic Gate Laboratory, Department of Chemistry and School of Molecular Science -BK 21, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea, and Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027
| | - Kibong Kim
- Molecular Logic Gate Laboratory, Department of Chemistry and School of Molecular Science -BK 21, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea, and Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027
| | - June Jeon
- Molecular Logic Gate Laboratory, Department of Chemistry and School of Molecular Science -BK 21, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea, and Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027
| | - Bhupal Meka
- Molecular Logic Gate Laboratory, Department of Chemistry and School of Molecular Science -BK 21, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea, and Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027
| | - Daniela Bucella
- Molecular Logic Gate Laboratory, Department of Chemistry and School of Molecular Science -BK 21, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea, and Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027
| | - Keliang Pang
- Molecular Logic Gate Laboratory, Department of Chemistry and School of Molecular Science -BK 21, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea, and Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027
| | - Snehadrinarayan Khatua
- Molecular Logic Gate Laboratory, Department of Chemistry and School of Molecular Science -BK 21, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea, and Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027
| | - Junseong Lee
- Molecular Logic Gate Laboratory, Department of Chemistry and School of Molecular Science -BK 21, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea, and Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027
| | - David G. Churchill
- Molecular Logic Gate Laboratory, Department of Chemistry and School of Molecular Science -BK 21, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea, and Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027
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Rochford J, Botchway S, McGarvey JJ, Rooney AD, Pryce MT. Photophysical and Electrochemical Properties of meso-Substituted Thien-2-yl Zn(II) Porphyrins. J Phys Chem A 2008; 112:11611-8. [DOI: 10.1021/jp805809p] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jonathan Rochford
- School of Chemical Sciences, SRC for Solar Energy Conversion, Dublin City University, Dublin 9, Ireland, Central Laser Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, United Kingdom, School of Chemistry, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland, United Kingdom, and Department of Chemistry, National University of Ireland Maynooth, Co. Kildare, Ireland
| | - Stanley Botchway
- School of Chemical Sciences, SRC for Solar Energy Conversion, Dublin City University, Dublin 9, Ireland, Central Laser Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, United Kingdom, School of Chemistry, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland, United Kingdom, and Department of Chemistry, National University of Ireland Maynooth, Co. Kildare, Ireland
| | - John J. McGarvey
- School of Chemical Sciences, SRC for Solar Energy Conversion, Dublin City University, Dublin 9, Ireland, Central Laser Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, United Kingdom, School of Chemistry, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland, United Kingdom, and Department of Chemistry, National University of Ireland Maynooth, Co. Kildare, Ireland
| | - A. Denise Rooney
- School of Chemical Sciences, SRC for Solar Energy Conversion, Dublin City University, Dublin 9, Ireland, Central Laser Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, United Kingdom, School of Chemistry, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland, United Kingdom, and Department of Chemistry, National University of Ireland Maynooth, Co. Kildare, Ireland
| | - Mary T. Pryce
- School of Chemical Sciences, SRC for Solar Energy Conversion, Dublin City University, Dublin 9, Ireland, Central Laser Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, United Kingdom, School of Chemistry, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland, United Kingdom, and Department of Chemistry, National University of Ireland Maynooth, Co. Kildare, Ireland
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Yuasa M, Murata H. ELECTROCHEMISTRY 2008; 76:838-841. [DOI: 10.5796/electrochemistry.76.838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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YUASA M, OYAIZU K, MURATA H, TOYODA Y, NAMBA M, SHITARA M. Synthesis of Six-coordination Proximal Base Conjugation Iron(III) porphyrin Complexes and Evaluation as a Superoxide Sensor. KOBUNSHI RONBUNSHU 2008. [DOI: 10.1295/koron.65.349] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Yuasa M, Oyaizu K, Murata H, Kobayashi T, Kobayashi C. Fabrication of Sensor for Reactive Oxygen Species Using Gold Electrodes Modified with Electropolymerized Porphyrins and Application for Detection of Stress of Plants. J Oleo Sci 2007; 56:81-6. [PMID: 17898467 DOI: 10.5650/jos.56.81] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Reactive Oxygen Spiecies (ROS) such as superoxide anion radical (.O(2)(-)) act as signals for the activation of stress-response and defense pathways. However, excess ROS generated by perturbing .O(2)(-) homeostasis stimulated many environmental stress, including intense light, drought, temperature stress, herbicides, induce high radical toxicity. Consequently, quantitative analysis of .O(2)(-) is a subject of intense research, since most of ROS are derived from .O(2)(-). Iron meso-tetrakis(3-thienyl)porphyrin complexes were electropolymerized onto a Au wire electrode. The modified Au electrode were applied to .O(2)(-) sensor to detect catalytic oxidation current of .O(2)(-) which was generated as an intermediate during the oxidation of xanthine by catalystic XOD. It was revealed that the sensor was quantitative to measure .O(2)(-). The modified Au electrode were applied to measure oxidation current of .O(2)(-) in mung beans under environmental stress condition. Plants were grown in atmosphere, 25 degrees C and in black darkness. The other plants were exposed to oxygen excess. The oxidation current of .O(2)(-) were increased plants were grown by high-oxygen environment compared to plants were grown at atmosphere. This experiment was indicated that environmental stress such as hyperoxia induced excess .O(2)(-) and Au wire sensor using iron porphyrin complexes is capable of .O(2)(-) detection in plants under environmental stresses.
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Affiliation(s)
- Makoto Yuasa
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda, Japan.
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YUASA M, OYAIZU K, MURATA H, ISHIKAWA M, TSUTSUI S, NAMBA M. Fabrication of Electrodes for Highly Sensitive Detection of a Superoxide Anion Radical by Electropolymerization of Thienylporphyrins in the Prescence of Thiophene and Application to Active Oxygen Sensors. KOBUNSHI RONBUNSHU 2006. [DOI: 10.1295/koron.63.427] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Oyaizu K, Hoshino M, Ishikawa M, Imai T, Yuasa M. Synthesis and characterization of a π-conjugated hybrid of oligothiophene and porphyrin. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/pola.21596] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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