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Enomoto A, Ichikawa K. Research and Development of Preclinical Overhauser-Enhanced Magnetic Resonance Imaging. Antioxid Redox Signal 2022; 37:1094-1110. [PMID: 35369734 DOI: 10.1089/ars.2022.0038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Significance: Imaging free radicals, including reactive oxygen species and reactive nitrogen species, can be useful for understanding the pathology of diseases in animal disease models, as they are related to various physiological functions or diseases. Among the methods used for imaging free radicals, Overhauser-enhanced magnetic resonance imaging (OMRI) has a short image acquisition time and high spatial resolution. Therefore, OMRI is used to obtain various biological parameters. In this study, we review the methodology for improving the biological OMRI system and its applications. Recent Advances: The sensitivity of OMRI systems has been enhanced significantly to allow the visualization of various biological parameters, such as redox state, partial oxygen pressure, and pH, in different body parts of small animals, using spin probes. Furthermore, both endogenous free radicals and exogenous free radicals present in drugs can be visualized using OMRI. Critical Issues: To acquire accurate biological parameters at a high resolution, it is essential to increase the electron paramagnetic resonance (EPR) excitation efficiency and achieve a high enhancement factor. In addition, the size and magnetic field strength also need to be optimized for the measurement target. Future Directions: The advancement of in vivo OMRI techniques will be useful for understanding the pathology, diagnosis, and evaluation of therapeutic effects of drugs in various disease models. Antioxid. Redox Signal. 37, 1094-1110.
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Affiliation(s)
- Ayano Enomoto
- Department of Biophysical Chemistry, Faculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, Japan
| | - Kazuhiro Ichikawa
- Department of Biophysical Chemistry, Faculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, Japan
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2
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Mazumder S, Bindu S, De R, Debsharma S, Pramanik S, Bandyopadhyay U. Emerging role of mitochondrial DAMPs, aberrant mitochondrial dynamics and anomalous mitophagy in gut mucosal pathogenesis. Life Sci 2022; 305:120753. [PMID: 35787999 DOI: 10.1016/j.lfs.2022.120753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/13/2022] [Accepted: 06/27/2022] [Indexed: 12/22/2022]
Abstract
Gastroduodenal inflammation and ulcerative injuries are increasing due to expanding socio-economic stress, unhealthy food habits-lifestyle, smoking, alcoholism and usage of medicines like non-steroidal anti-inflammatory drugs. In fact, gastrointestinal (GI) complications, associated with the prevailing COVID-19 pandemic, further, poses a challenge to global healthcare towards safeguarding the GI tract. Emerging evidences have discretely identified mitochondrial dysfunctions as common etiological denominators in diseases. However, it is worth realizing that mitochondrial dysfunctions are not just consequences of diseases. Rather, damaged mitochondria severely aggravate the pathogenesis thereby qualifying as perpetrable factors worth of prophylactic and therapeutic targeting. Oxidative and nitrosative stress due to endogenous and exogenous stimuli triggers mitochondrial injury causing production of mitochondrial damage associated molecular patterns (mtDAMPs), which, in a feed-forward loop, inflicts inflammatory tissue damage. Mitochondrial structural dynamics and mitophagy are crucial quality control parameters determining the extent of mitopathology and disease outcomes. Interestingly, apart from endogenous factors, mitochondria also crosstalk and in turn get detrimentally affected by gut pathobionts colonized during luminal dysbiosis. Although mitopathology is documented in various pre-clinical/clinical studies, a comprehensive account appreciating the mitochondrial basis of GI mucosal pathologies is largely lacking. Here we critically discuss the molecular events impinging on mitochondria along with the interplay of mitochondria-derived factors in fueling mucosal pathogenesis. We specifically emphasize on the potential role of aberrant mitochondrial dynamics, anomalous mitophagy, mitochondrial lipoxidation and ferroptosis as emerging regulators of GI mucosal pathogenesis. We finally discuss about the prospect of mitochondrial targeting for next-generation drug discovery against GI disorders.
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Affiliation(s)
- Somnath Mazumder
- Department of Zoology, Raja Peary Mohan College, 1 Acharya Dhruba Pal Road, Uttarpara, West Bengal 712258, India
| | - Samik Bindu
- Department of Zoology, Cooch Behar Panchanan Barma University, Cooch Behar, West Bengal 736101, India
| | - Rudranil De
- Amity Institute of Biotechnology, Amity University, Kolkata, Plot No: 36, 37 & 38, Major Arterial Road, Action Area II, Kadampukur Village, Newtown, Kolkata, West Bengal 700135, India
| | - Subhashis Debsharma
- Division of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Kolkata, West Bengal 700032, India
| | - Saikat Pramanik
- Division of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Kolkata, West Bengal 700032, India
| | - Uday Bandyopadhyay
- Division of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Kolkata, West Bengal 700032, India; Division of Molecular Medicine, Bose Institute, EN 80, Sector V, Bidhan Nagar, Kolkata, West Bengal 700091, India.
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3
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Matsumoto KI, Nakanishi I, Zhelev Z, Bakalova R, Aoki I. Nitroxyl Radical as a Theranostic Contrast Agent in Magnetic Resonance Redox Imaging. Antioxid Redox Signal 2022; 36:95-121. [PMID: 34148403 PMCID: PMC8792502 DOI: 10.1089/ars.2021.0110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Significance:In vivo assessment of paramagnetic and diamagnetic conversions of nitroxyl radicals based on cyclic redox mechanism can be an index of tissue redox status. The redox mechanism of nitroxyl radicals, which enables their use as a normal tissue-selective radioprotector, is seen as being attractive on planning radiation therapy. Recent Advances:In vivo redox imaging using nitroxyl radicals as redox-sensitive contrast agents has been developed to assess tissue redox status. Chemical and biological behaviors depending on chemical structures of nitroxyl radical compounds have been understood in detail. Polymer types of nitroxyl radical contrast agents and/or nitroxyl radical-labeled drugs were designed for approaching theranostics. Critical Issues: Nitroxyl radicals as magnetic resonance imaging (MRI) contrast agents have several advantages compared with those used in electron paramagnetic resonance (EPR) imaging, while support by EPR spectroscopy is important to understand information from MRI. Redox-sensitive paramagnetic contrast agents having a medicinal benefit, that is, nitroxyl-labeled drug, have been developed and proposed. Future Directions: A development of suitable nitroxyl contrast agent for translational theranostic applications with high reaction specificity and low normal tissue toxicity is under progress. Nitroxyl radicals as redox-sensitive magnetic resonance contrast agents can be a useful tool to detect an abnormal tissue redox status such as disordered oxidative stress. Antioxid. Redox Signal. 36, 95-121.
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Affiliation(s)
- Ken-Ichiro Matsumoto
- Quantitative RedOx Sensing Group, Department of Radiation Regulatory Science Research, National Institute of Radiological Sciences, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
| | - Ikuo Nakanishi
- Quantum RedOx Chemistry Group, Institute for Quantum Life Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
| | - Zhivko Zhelev
- Medical Faculty, Trakia University, Stara Zagora, Bulgaria.,Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Rumiana Bakalova
- Functional and Molecular Imaging Goup, Department of Molecular Imaging and Theranostics, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
| | - Ichio Aoki
- Functional and Molecular Imaging Goup, Department of Molecular Imaging and Theranostics, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
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4
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Hyodo F, Eto H, Naganuma T, Koyasu N, Elhelaly AE, Noda Y, Kato H, Murata M, Akahoshi T, Hashizume M, Utsumi H, Matsuo M. In Vivo Dynamic Nuclear Polarization Magnetic Resonance Imaging for the Evaluation of Redox-Related Diseases and Theranostics. Antioxid Redox Signal 2022; 36:172-184. [PMID: 34015957 DOI: 10.1089/ars.2021.0087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Significance:In vivo molecular and metabolic imaging is an emerging field in biomedical research that aims to perform noninvasive detection of tissue metabolism in disease states and responses to therapeutic agents. The imbalance in tissue oxidation/reduction (Redox) states is related to the onset and progression of several diseases. Tissue redox metabolism provides biomarkers for early diagnosis and drug treatments. Thus, noninvasive imaging of redox metabolism could be a useful, novel diagnostic tool for diagnosis of redox-related disease and drug discovery. Recent Advances:In vivo dynamic nuclear polarization magnetic resonance imaging (DNP-MRI) is a technique that enables the imaging of free radicals in living animals. DNP enhances the MRI signal by irradiating the target tissue or solution with the free radical molecule's electron paramagnetic resonance frequency before executing pulse sequence of the MRI. In vivo DNP-MRI with redox-sensitive nitroxyl radicals as the DNP redox contrast agent enables the imaging of the redox metabolism on various diseases. Moreover, nitroxyl radicals show antioxidant effects that suppress oxidative stress. Critical Issues: To date, considerable progress has been documented preclinically in the development of animal imaging systems. Here, we review redox imaging of in vivo DNP-MRI with a focus on the recent progress of this system and its uses in patients with redox-related diseases. Future Directions: This technique could have broad applications in the study of other redox-related diseases, such as cancer, inflammation, and neurological disorders, and facilitate the evaluation of treatment response as a theranostic tool. Antioxid. Redox Signal. 36, 172-184.
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Affiliation(s)
- Fuminori Hyodo
- Department of Radiology, Frontier Science for Imaging, School of Medicine, Gifu University, Gifu, Japan
| | - Hinako Eto
- Center for Advanced Medical Open Innovation, Kyushu University, Fukuoka, Japan
| | | | | | - Abdelazim Elsayed Elhelaly
- Department of Radiology, Frontier Science for Imaging, School of Medicine, Gifu University, Gifu, Japan.,Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | | | - Hiroki Kato
- Department of Radiology, Gifu University, Gifu, Japan
| | - Masaharu Murata
- Center for Advanced Medical Open Innovation, Kyushu University, Fukuoka, Japan.,Graduate School of Medicine, Disaster and Emergency Medicine, Kyushu University, Fukuoka, Japan
| | - Tomohiko Akahoshi
- Graduate School of Medicine, Disaster and Emergency Medicine, Kyushu University, Fukuoka, Japan
| | | | - Hideo Utsumi
- School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
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Yasukawa K. Redox-Based Theranostics of Gastric Ulcers Using Nitroxyl Radicals. Antioxid Redox Signal 2022; 36:160-171. [PMID: 34498915 DOI: 10.1089/ars.2021.0104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Significance: Redox-based theranostics involves redox monitoring and therapeutics that normalize redox imbalance. It may be a promising approach to markedly improve a patient's quality of life through streamlined treatment. Nitroxyl radicals are useful for both redox monitoring and treating gastric ulcers in rodents. Recent Advances: Redox monitoring using in vivo electron paramagnetic resonance (EPR) spectroscopy in a gastric ulcer rat model showed the production of reactive oxygen species in the whole stomach. A combination of Overhauser-enhanced magnetic resonance imaging (MRI) and nitroxyl radicals provided high-resolution images of redox imbalance in the stomach of rats with a gastric ulcer. Treatment with nitroxyl radicals was effective to treat ulcers that were formed using model experiments of Helicobacter pylori and mental stress as well as nonsteroidal anti-inflammatory drugs. Critical Issues: For redox monitoring using Overhauser-enhanced MRI, the EPR irradiation power that is delivered to subjects must be within the range of the specific absorption rate regulation to protect against microwave damage regardless of a decrease in image contrast. The effect of long-term treatment with a nitroxyl radical in patients with a gastric ulcer remains unclear. Future Directions: Further research on redox-based theranostics in redox-related diseases, including gastric ulcers, would be accelerated by improving the redox imager and by developing functional nitroxyl radicals that localize in the target organ, tissue, or cell and that have specific reactivity for the redox-related biomolecule.
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Affiliation(s)
- Keiji Yasukawa
- Laboratory of Advanced Pharmacology, Faculty of Pharmaceutical Sciences, Daiichi University of Pharmacy, Fukuoka, Japan
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6
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Enomoto A, Kato N, Shirouzu N, Tamura C, Ichikawa K. Imaging analysis for multiple paramagnetic agents using OMRI and electrophoresis. J Clin Biochem Nutr 2022; 70:103-107. [PMID: 35400821 PMCID: PMC8921720 DOI: 10.3164/jcbn.20-172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 07/05/2021] [Indexed: 11/22/2022] Open
Abstract
Nitroxides have been widely used as a molecular probe for analysis of various diseases models. This article describes an analytical method for separation and semi-quantification of multiple paramagnetic contrast agents with simple procedure combining electrophoresis and Overhauser enhancement magnetic resonance imaging (OMRI) imaging. We used three nitroxides, 3-carbamoyl PROXYL, 3-carboxy PROXYL, and CAT-1, which have different ionic charges in the molecule. In addition, we showed that this method could apply for in vitro measurement using biological sample. The results showed the nitroxides were successfully separated with electrophoresis depending on their charge, and their separation was visualized with OMRI after electrophoresis. Vehicle media such as whole blood did not affect the electrophoresis results and OMRI enhancement factor. Thus, the method can be used to analyze the redox status of biological samples without preprocessing. This analytical method enables in vitro measurement of biological samples to determine the redox status of specific tissue layers using paramagnetic agents, which is helpful for detailed analysis of redox-related diseases.
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Affiliation(s)
- Ayano Enomoto
- Department of Biophysical Chemistry, Faculty of Pharmaceutical Sciences, Nagasaki International University
| | - Nao Kato
- Innovation Center for Medical Redox Navigation, Kyushu University
| | - Naomi Shirouzu
- Innovation Center for Medical Redox Navigation, Kyushu University
| | - Chihiro Tamura
- Innovation Center for Medical Redox Navigation, Kyushu University
| | - Kazuhiro Ichikawa
- Department of Biophysical Chemistry, Faculty of Pharmaceutical Sciences, Nagasaki International University
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7
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Mohamed YT, Naguib IA, Abo-Saif AA, Mohamed WR. Protective effects of perindopril against indomethacin-induced gastric mucosal damage through modulation of DDAH-1/ADMA and ACE-2/ANG-(1-7) signaling pathways. Drug Chem Toxicol 2021; 45:2509-2518. [PMID: 34384315 DOI: 10.1080/01480545.2021.1962672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Indomethacin is a widely used nonsteroidal anti-inflammatory drug; however, its clinical utility is accompanied by serious adverse reactions including peptic ulcers. The current study aims to investigate the protective potential of perindopril against indomethacin-induced gastric injury in rats. Perindopril (4 mg/kg) was administered orally for 7 days and indomethacin (60 mg/kg, single oral dose) was administered on the 7th day, 1 h after perindopril administration. Pantoprazole was used as a standard agent. Ulcer index (UI), preventive index ratio (PI), histopathological examination, oxidative stress, and inflammatory biomarkers were investigated. Perindopril significantly decreased UI while increased PI and counteracted histopathological aberrations induced by indomethacin. It alleviated indomethacin-induced oxidative stress by lowering NO while increasing GSH content and superoxide dismutase activity. Perindopril significantly downregulated TNF-α and asymmetric dimethylarginine (ADMA), while significantly upregulated COX-2, PGE-2, dimethylarginine dimethylaminohydrolase-1 (DDAH-1), ANG-(1-7), and ACE-2 expression. Together, these findings suggest the gastroprotective effects of perindopril through modulation of DDAH-1/ADMA and ACE-2/ANG-(1-7) signaling.HIGHLIGHTSPerindopril attenuated gastric histopathological damage.It increased GSH content and SOD activity while decreased NO content.It modulated gastric ADMA and DDAH-1 activity.It reduced TNF-α, while increased COX-2 and PGE-2 expression.It upregulated ACE-2 activity and ANG-(1-7) protein expression.
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Affiliation(s)
- Yasmin T Mohamed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Nahda University, Beni-Suef, Egypt
| | - Ibrahim A Naguib
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University, Taif, Saudi Arabia
| | - Ali A Abo-Saif
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Nahda University, Beni-Suef, Egypt
| | - Wafaa R Mohamed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
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8
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Chami B, San Gabriel PT, Kum-Jew S, Wang X, Dickerhof N, Dennis JM, Witting PK. The nitroxide 4-methoxy-tempo inhibits the pathogenesis of dextran sodium sulfate-stimulated experimental colitis. Redox Biol 2019; 28:101333. [PMID: 31593888 PMCID: PMC6812268 DOI: 10.1016/j.redox.2019.101333] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 09/24/2019] [Accepted: 09/26/2019] [Indexed: 02/07/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic condition characterised by leukocyte recruitment to the gut mucosa. Leukocyte myeloperoxidase (MPO) produces the two-electron oxidant hypochlorous acid (HOCl), damaging tissue and playing a role in cellular recruitment, thereby exacerbating gut injury. We tested whether the MPO-inhibitor, 4-Methoxy-TEMPO (MetT), ameliorates experimental IBD. Colitis was induced in C57BL/6 mice by 3% w/v dextran-sodium-sulfate (DSS) in drinking water ad libitum over 9-days with MetT (15 mg/kg; via i. p. injection) or vehicle control (10% v/v DMSO+90% v/v phosphate buffered saline) administered twice daily during DSS challenge. MetT attenuated body-weight loss (50%, p < 0.05, n = 6), improved clinical score (53%, p < 0.05, n = 6) and inhibited serum lipid peroxidation. Histopathological damage decreased markedly in MetT-treated mice, as judged by maintenance of crypt integrity, goblet cell density and decreased cellular infiltrate. Colonic Ly6C+, MPO-labelled cells and 3-chlorotyrosine (3-Cl-Tyr) decreased in MetT-treated mice, although biomarkers for nitrosative stress (3-nitro-tyrosine-tyrosine; 3-NO2-Tyr) and low-molecular weight thiol damage (assessed as glutathione sulfonamide; GSA) were unchanged. Interestingly, MetT did not significantly impact colonic IL-10 and IL-6 levels, suggesting a non-immunomodulatory pathway. Overall, MetT ameliorated the severity of experimental IBD, likely via a mechanism involving the modulation of MPO-mediated damage.
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Affiliation(s)
- Belal Chami
- Discipline of Pathology, Charles Perkins Centre, Faculty of Medicine and Health, The University of Sydney, NSW, 2006, Australia
| | - Patrick T San Gabriel
- Discipline of Pathology, Charles Perkins Centre, Faculty of Medicine and Health, The University of Sydney, NSW, 2006, Australia
| | - Stephen Kum-Jew
- Discipline of Pathology, Charles Perkins Centre, Faculty of Medicine and Health, The University of Sydney, NSW, 2006, Australia
| | - XiaoSuo Wang
- Discipline of Pathology, Charles Perkins Centre, Faculty of Medicine and Health, The University of Sydney, NSW, 2006, Australia
| | - Nina Dickerhof
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch, New Zealand
| | - Joanne M Dennis
- Discipline of Pathology, Charles Perkins Centre, Faculty of Medicine and Health, The University of Sydney, NSW, 2006, Australia
| | - Paul K Witting
- Discipline of Pathology, Charles Perkins Centre, Faculty of Medicine and Health, The University of Sydney, NSW, 2006, Australia.
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Ge Z, Wang C, Zhang J, Li X, Hu J. Tempol Protects Against Acetaminophen Induced Acute Hepatotoxicity by Inhibiting Oxidative Stress and Apoptosis. Front Physiol 2019; 10:660. [PMID: 31214044 PMCID: PMC6554449 DOI: 10.3389/fphys.2019.00660] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/09/2019] [Indexed: 12/12/2022] Open
Abstract
Acetaminophen (APAP)-induced acute hepatotoxicity is the leading cause of drug-induced acute liver failure. The aim of this study was to evaluate the effects of 4-hydroxy-2,2,6,6-tetramethylpiperidine-N-oxyl (tempol) on the protection of APAP-induced hepatotoxicity in mice. Mice were pretreated with a single dose of tempol (20 mg/kg per day) orally for 7 days. On the seventh day, mice were injected with a single dose of APAP (300 mg/kg) to induce acute hepatotoxicity. Our results showed that tempol treatment markedly improved liver functions with alleviations of histopathological damage induced by APAP. Tempol treatment upregulated levels of antioxidant proteins, including superoxide dismutase, catalase, and glutathione. Also, phosphorylation of phosphoinositide 3-kinase (PI3K) and protein kinase B (Akt) and protein expression of nuclear factor erythroid 2-related factor (Nrf 2) and heme oxygense-1 (HO-1) were all increased by tempol, which indicated tempol protected against APAP-induced hepatotoxicity via the PI3K/Akt/Nrf2 pathway. Moreover, tempol treatment decreased pro-apoptotic protein expressions (cleaved caspase-3 and Bax) and increased anti-apoptotic Bcl-2 in liver, as well as reducing apoptotic cells of TUNEL staining, which suggested apoptotic effects of tempol treatment. Overall, we found that tempol normalizes liver function in APAP-induced acute hepatotoxicity mice via activating PI3K/Akt/Nrf2 pathway, thus enhancing antioxidant response and inhibiting hepatic apoptosis.
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Affiliation(s)
- Zheng Ge
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Chenyu Wang
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Junjie Zhang
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Xiwang Li
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Junhong Hu
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China
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10
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Myeloperoxidase in the inflamed colon: A novel target for treating inflammatory bowel disease. Arch Biochem Biophys 2018; 645:61-71. [DOI: 10.1016/j.abb.2018.03.012] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 03/08/2018] [Accepted: 03/12/2018] [Indexed: 12/17/2022]
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11
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Thomas K, Moody TW, Jensen RT, Tong J, Rayner CL, Barnett NL, Fairfull-Smith KE, Ridnour LA, Wink DA, Bottle SE. Design, synthesis and biological evaluation of hybrid nitroxide-based non-steroidal anti-inflammatory drugs. Eur J Med Chem 2018; 147:34-47. [PMID: 29421569 PMCID: PMC8202972 DOI: 10.1016/j.ejmech.2018.01.077] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/15/2018] [Accepted: 01/23/2018] [Indexed: 11/23/2022]
Abstract
Dual-acting hybrid anti-oxidant/anti-inflammatory agents were developed employing the principle of pharmacophore hybridization. Hybrid agents were synthesized by combining stable anti-oxidant nitroxides with conventional non-steroidal anti-inflammatory drugs (NSAIDs). Several of the hybrid nitroxide-NSAID conjugates displayed promising anti-oxidant and anti-inflammatory effects on two Non-Small Cell Lung Cancer (NSCLC) cells (A549 and NCI-H1299) and in ameliorating oxidative stress induced in 661 W retinal cells. One ester-linked nitroxide-aspirin analogue (27) delivered better anti-inflammatory effects (cyclooxygenase inhibition) than the parent compound (aspirin), and also showed similar reactive oxygen scavenging activity to the anti-oxidant, Tempol. In addition, a nitroxide linked to the anti-inflammatory drug indomethacin (39) significantly ameliorated the effects of oxidative stress on 661 W retinal neurons at efficacies greater or equal to the anti-oxidant Lutein. Other examples of the hybrid conjugates displayed promising anti-cancer activity, as demonstrated by their inhibitory effects on the proliferation of A549 NSCLC cells.
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Affiliation(s)
- Komba Thomas
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, (QUT) GPO Box 2434, Brisbane, QLD 4001, Australia
| | - Terry W Moody
- Center for Cancer Research, National Cancer Institute, Cancer and Inflammation Program, Frederick, MD 21702-1201, USA
| | - Robert T Jensen
- Center for Cancer Research, National Cancer Institute, Cancer and Inflammation Program, Frederick, MD 21702-1201, USA
| | - Jason Tong
- Queensland Eye Institute, South Brisbane, Queensland, Australia
| | - Cassie L Rayner
- Queensland Eye Institute, South Brisbane, Queensland, Australia
| | - Nigel L Barnett
- Queensland Eye Institute, South Brisbane, Queensland, Australia; The University of Queensland, UQ Centre for Clinical Research, Herston, Queensland, Australia
| | - Kathryn E Fairfull-Smith
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, (QUT) GPO Box 2434, Brisbane, QLD 4001, Australia
| | - Lisa A Ridnour
- Center for Cancer Research, National Cancer Institute, Cancer and Inflammation Program, Frederick, MD 21702-1201, USA
| | - David A Wink
- Center for Cancer Research, National Cancer Institute, Cancer and Inflammation Program, Frederick, MD 21702-1201, USA
| | - Steven E Bottle
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, (QUT) GPO Box 2434, Brisbane, QLD 4001, Australia.
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12
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Rangel J, Díaz-Uribe C, Rodriguez-Serrano A, Zarate X, Serge Y, Vallejo W, Nogueras M, Trilleras J, Quiroga J, Tatchen J, Cobo J. Three-component one-pot synthesis of novel pyrido[2,3- d ]pyrimidine indole substituted derivatives and DFT analysis. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.02.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Bi W, Bi Y, Gao X, Li P, Hou S, Zhang Y, Bammert C, Jockusch S, Legalley TD, Michael Gibson K, Bi L. Indole-TEMPO conjugates alleviate ischemia-reperfusion injury via attenuation of oxidative stress and preservation of mitochondrial function. Bioorg Med Chem 2017; 25:2545-2568. [PMID: 28359673 DOI: 10.1016/j.bmc.2017.03.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 03/14/2017] [Accepted: 03/16/2017] [Indexed: 01/13/2023]
Abstract
Mitochondrial oxidative damage contributes to a wide range of pathologies including ischemia/reperfusion injury. Accordingly, protecting mitochondria from oxidative damage should possess therapeutic relevance. In the present study, we have designed and synthesized a series of novel indole-TEMPO conjugates that manifested good anti-inflammatory properties in a murine model of xylene-induced ear edema. We have demonstrated that these compounds can protect cells from simulated ischemia/reperfusion (s-I/R)-induced reactive oxygen species (ROS) overproduction and mitochondrial dysfunction. Furthermore, we have demonstrated that indole-TEMPO conjugates can attenuate organ damage induced in rodents via intestinal I/R injury. We therefore propose that the pharmacological profile and mechanism of action of these indole-TEMPO conjugates involve convergent roles, including the ability to decrease free radical production via lipid peroxidation which couples to an associated decrease in ROS-mediated activation of the inflammatory process. We further hypothesize that the protective effects of indole-TEMPO conjugates partially reside in maintaining optimal mitochondrial function.
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Affiliation(s)
- Wei Bi
- Second Hospital of HeBei Medical University, Shijiazhuang 050000, PR China.
| | - Yue Bi
- Second Hospital of HeBei Medical University, Shijiazhuang 050000, PR China
| | - Xiang Gao
- Department of Chemistry and Biological Sciences, Michigan Technological University, Houghton, MI 49931, USA
| | - Pengfei Li
- Second Hospital of HeBei Medical University, Shijiazhuang 050000, PR China
| | - Shanshan Hou
- Department of Chemistry and Biological Sciences, Michigan Technological University, Houghton, MI 49931, USA
| | - Yanrong Zhang
- Second Hospital of HeBei Medical University, Shijiazhuang 050000, PR China
| | - Cathy Bammert
- Department of Chemistry and Biological Sciences, Michigan Technological University, Houghton, MI 49931, USA
| | - Steffen Jockusch
- Department of Chemistry, Columbia University, New York, NY 10027, USA
| | - Thomas D Legalley
- Marquette General Heart and Vascular Institute, Marquette General Hospital, Marquette, MI 49855, USA
| | - K Michael Gibson
- Department of Pharmacotherapy, College of Pharmacy, Washington State University, Spokane WA 99202, USA.
| | - Lanrong Bi
- Department of Chemistry and Biological Sciences, Michigan Technological University, Houghton, MI 49931, USA.
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14
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Halici Z, Polat B, Cadirci E, Topcu A, Karakus E, Kose D, Albayrak A, Bayir Y. Inhibiting renin angiotensin system in rate limiting step by aliskiren as a new approach for preventing indomethacin induced gastric ulcers. Chem Biol Interact 2016; 258:266-75. [DOI: 10.1016/j.cbi.2016.09.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 09/07/2016] [Accepted: 09/15/2016] [Indexed: 01/01/2023]
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15
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Abdel-Hamid NM, Wahid A, Mohamed EM, Abdel-Aziz MA, Mohafez OM, Bakar S. New pathways driving the experimental hepatoprotective action of tempol (4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl) against acute hepatotoxicity. Biomed Pharmacother 2016; 79:215-21. [PMID: 27044831 DOI: 10.1016/j.biopha.2016.02.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Revised: 02/27/2016] [Accepted: 02/29/2016] [Indexed: 02/07/2023] Open
Abstract
PURPOSE In absence of liver protective drugs, a large number of hepatopathies may arise during drug administration. This study was executed to investigate the possible new pathways underlying the hepatoprotective effect of Tempol (4-hydroxy-2,2,6,6- tetramethylpiperidine-1-oxyl), following oral administration of carbon tetrachloride in mice. METHODS AND RESULTS Thirty albino mice were randomized into 3 equal groups. The duration of study was 28 days. The groups were classified as follows: Group I (healthy control): received saline, in the same volume of CCl4 dose, daily, orally, for 14 days, then sacrificed. Group II: received CCl4, as a single oral dose only, of 1 ml/kg body weight, dissolved in olive oil (1:1 v/v), the animals of this group were sacrificed 14 days after CCl4 single dose intoxication. Group III (protective Tempol treated): received a single dose of Tempol, 20mg/kg, orally, daily for 14 days. Two hours after the last Tempol dose, animals of group III received a single oral dose of CCl4. Fourteen days later, animals were scarified to collect blood and liver tissues for analysis. Tempol pretreatment significantly captured elevated levels of ALT and AST activities, lipid peroxidation, total bilirubin and increased total thiol and catalase contents. Notably, it significantly reduced the expression of tumor necrosis factor-alpha (TNF-α), Caspase-3 and endoplasmic reticulum (ER) inositol-requiring enzyme 1(IRE1) mRNAs, which is an ER trans membrane sensor that activates the unfolded protein response (UPR) to maintain the ER and cellular function. CONCLUSION Pretreatment with Tempol has potential hepatoprotective effects against acute liver injury, induced by CCl4, through antioxidant and anti-inflammatory activities.
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Affiliation(s)
- N M Abdel-Hamid
- Department of Biochemistry, Faculty of Pharmacy, Kafer Alsheikh University, Egypt.
| | - Ahmed Wahid
- Department of Biochemistry, Faculty of Pharmacy, Minia University, Egypt
| | - E M Mohamed
- Department of Biochemistry, Faculty of Pharmacy, Minia University, Egypt
| | - M A Abdel-Aziz
- Department of Biochemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Egypt
| | - O M Mohafez
- Department of Biochemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Egypt
| | - Sally Bakar
- Department of Biochemistry, Faculty of Medicine, Assiut University, Egypt
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16
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Kajer TB, Fairfull-Smith KE, Yamasaki T, Yamada KI, Fu S, Bottle SE, Hawkins CL, Davies MJ. Inhibition of myeloperoxidase- and neutrophil-mediated oxidant production by tetraethyl and tetramethyl nitroxides. Free Radic Biol Med 2014; 70:96-105. [PMID: 24566469 DOI: 10.1016/j.freeradbiomed.2014.02.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 01/23/2014] [Accepted: 02/12/2014] [Indexed: 12/17/2022]
Abstract
The powerful oxidant HOCl (hypochlorous acid and its corresponding anion, (-)OCl) generated by the myeloperoxidase (MPO)-H2O2-Cl(-) system of activated leukocytes is strongly associated with multiple human inflammatory diseases; consequently there is considerable interest in inhibition of this enzyme. Nitroxides are established antioxidants of low toxicity that can attenuate oxidation in animal models, with this ascribed to superoxide dismutase or radical-scavenging activities. We have shown (M.D. Rees et al., Biochem. J. 421, 79-86, 2009) that nitroxides, including 4-amino-TEMPO (4-amino-2,2,6,6-tetramethylpiperidin-1-yloxyl radical), are potent inhibitors of HOCl formation by isolated MPO and activated neutrophils, with IC50 values of ~1 and ~6 µM respectively. The utility of tetramethyl-substituted nitroxides is, however, limited by their rapid reduction by biological reductants. The corresponding tetraethyl-substituted nitroxides have, however, been reported to be less susceptible to reduction. In this study we show that the tetraethyl species were reduced less rapidly than the tetramethyl species by both human plasma (89-99% decreased rate of reduction) and activated human neutrophils (62-75% decreased rate). The tetraethyl-substituted nitroxides retained their ability to inhibit HOCl production by MPO and activated neutrophils with IC50 values in the low-micromolar range; in some cases inhibition was enhanced compared to tetramethyl substitution. Nitroxides with rigid structures (fused oxaspiro rings) were, however, inactive. Overall, these data indicate that tetraethyl-substituted nitroxides are potent inhibitors of oxidant formation by MPO, with longer plasma and cellular half-lives compared to the tetramethyl species, potentially allowing lower doses to be employed.
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Affiliation(s)
- Tracey B Kajer
- Heart Research Institute, Newtown, Sydney, NSW 2042, Australia; Faculty of Medicine, University of Sydney, Sydney, NSW, Australia
| | - Kathryn E Fairfull-Smith
- School of Physical and Chemical Sciences, Queensland University of Technology, Brisbane, QLD, Australia
| | - Toshihide Yamasaki
- Faculty of Pharmaceutical Sciences, Kyushu University, Fukuoka, Kyushu, Japan
| | - Ken-ichi Yamada
- Faculty of Pharmaceutical Sciences, Kyushu University, Fukuoka, Kyushu, Japan
| | - Shanlin Fu
- Centre for Forensic Science, University of Technology, Sydney, NSW, Australia
| | - Steven E Bottle
- School of Physical and Chemical Sciences, Queensland University of Technology, Brisbane, QLD, Australia
| | - Clare L Hawkins
- Heart Research Institute, Newtown, Sydney, NSW 2042, Australia; Faculty of Medicine, University of Sydney, Sydney, NSW, Australia
| | - Michael J Davies
- Heart Research Institute, Newtown, Sydney, NSW 2042, Australia; Faculty of Medicine, University of Sydney, Sydney, NSW, Australia.
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17
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Zhou JX, Ke P, Huan G, Shao BZ, Liu C. Combined treatment with anisodamine and neostigmine inhibits joint inflammation in collagen-induced arthritis mice. CNS Neurosci Ther 2014; 20:186-7. [PMID: 24393231 PMCID: PMC4234011 DOI: 10.1111/cns.12213] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 11/05/2013] [Accepted: 11/05/2013] [Indexed: 01/22/2023] Open
Affiliation(s)
- Jv-Xiang Zhou
- Department of Pharmacology, Second Military Medical University, Shanghai, China
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18
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Qandil AM. Prodrugs of nonsteroidal anti-inflammatory drugs (NSAIDs), more than meets the eye: a critical review. Int J Mol Sci 2012; 13:17244-74. [PMID: 23247285 PMCID: PMC3546748 DOI: 10.3390/ijms131217244] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 11/29/2012] [Accepted: 12/10/2012] [Indexed: 12/15/2022] Open
Abstract
The design and the synthesis of prodrugs for nonsteroidal anti-inflammatory drugs (NSAIDs) have been given much attention by medicinal chemists, especially in the last decade. As a therapeutic group, NSAIDs are among the most widely used prescribed and over the counter (OTC) medications. The rich literature about potential NSAID prodrugs clearly shows a shift from alkyl, aryalkyl or aryl esters with the sole role of masking the carboxylic acid group, to more elaborate conjugates that contain carefully chosen groups to serve specific purposes, such as enhancement of water solubility and dissolution, nitric oxide release, hydrogen sulfide release, antioxidant activity, anticholinergic and acetylcholinesterase inhibitory (AChEI) activity and site-specific targeting and delivery. This review will focus on NSAID prodrugs that have been designed or were, later, found to possess intrinsic pharmacological activity as an intact chemical entity. Such intrinsic activity might augment the anti-inflammatory activity of the NSAID, reduce its side effects or transform the potential therapeutic use from classical anti-inflammatory action to something else. Reports discussed in this review will be those of NO-NSAIDs, anticholinergic and AChEI-NSAIDs, Phospho-NSAIDs and some miscellaneous agents. In most cases, this review will cover literature dealing with these NSAID prodrugs from the year 2006 and later. Older literature will be used when necessary, e.g., to explain the chemical and biological mechanisms of action.
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Affiliation(s)
- Amjad M Qandil
- Pharmaceutical Sciences Department, College of Pharmacy, King Saud bin Abdulaziz University for Health Sciences, Riyadh 11426, Saudi Arabia.
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19
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Ichikawa K, Yasukawa K. Imagingin vivoredox status in high spatial resolution with OMRI. Free Radic Res 2012; 46:1004-10. [DOI: 10.3109/10715762.2012.670874] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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