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Kuroda Y, Togashi H, Uchida T, Haga K, Yamashita A, Sadahiro M. Oxidative stress evaluation of skeletal muscle in ischemia-reperfusion injury using enhanced magnetic resonance imaging. Sci Rep 2020; 10:10863. [PMID: 32616815 PMCID: PMC7331576 DOI: 10.1038/s41598-020-67336-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 06/03/2020] [Indexed: 01/25/2023] Open
Abstract
Acute extremity arterial occlusion requires prompt revascularization. Delayed revascularization induces ischemia–reperfusion injury in the skeletal muscle. Organ injury-induced oxidative stress is widely reported, and oxidative stress is heavily involved in ischemia–reperfusion injury. This study aimed to evaluate oxidative stress in ischemia–reperfusion rat models using 3-carbamoyl PROXYL enhanced magnetic resonance imaging (3-CP enhanced MRI). Ischemia–reperfusion injury was induced through clamping the right femoral artery in rats, with a 4-h ischemia time in all experiments. 3-CP enhanced MRI was performed to evaluate oxidative stress, and the rats were divided into 3 reperfusion time groups: 0.5, 2, and 24 h. Signal intensity was evaluated using 3-CP enhanced MRI and compared in the ischemia–reperfusion and intact limbs in the same rat. Furthermore, the effect of edaravone (radical scavenger) was evaluated in the 4-h ischemia—24-h reperfusion injury rat model. The signal intensity of the ischemia–reperfusion limb was significantly stronger than that of the intact limb, suggesting that oxidative stress was induced in the ischemia–reperfusion muscle. Edaravone administration reduced the oxidative stress in the ischemia–reperfusion limb. The signal intensity of the ischemia–reperfusion limb was stronger than that of the intact limb, presumably reflecting the oxidative stress in the former. 3-CP MRI examination shows promise for effective assessment of oxidative stress and may facilitate early diagnosis of ischemia–reperfusion injury.
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Affiliation(s)
- Yoshinori Kuroda
- Division of Cardiovascular Surgery, Department of Surgery II, Faculty of Medicine, Yamagata University, 2-2-2 Iidanishi, Yamagata, 990-9585, Japan.
| | - Hitoshi Togashi
- Health Administration Center, Yamagata University, Yamagata, Japan
| | - Tetsuro Uchida
- Division of Cardiovascular Surgery, Department of Surgery II, Faculty of Medicine, Yamagata University, 2-2-2 Iidanishi, Yamagata, 990-9585, Japan
| | - Kazuyuki Haga
- Radiation Department, Yamagata University Hospital, Yamagata, Japan
| | - Atsushi Yamashita
- Division of Cardiovascular Surgery, Department of Surgery II, Faculty of Medicine, Yamagata University, 2-2-2 Iidanishi, Yamagata, 990-9585, Japan
| | - Mitsuaki Sadahiro
- Division of Cardiovascular Surgery, Department of Surgery II, Faculty of Medicine, Yamagata University, 2-2-2 Iidanishi, Yamagata, 990-9585, Japan
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Li JB, Wang Q, Liu HW, Yin X, Hu XX, Yuan L, Zhang XB. Engineering of a bioluminescent probe for imaging nitroxyl in live cells and mice. Chem Commun (Camb) 2019; 55:1758-1761. [DOI: 10.1039/c9cc00211a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A turn-on bioluminescent probe (BP-HNO) that is free of autofluorescence for bioimaging nitroxyl in live cells and mice is reported for the first time.
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Affiliation(s)
- Jun-Bin Li
- Molecular Science and Biomedicine Laboratory (MBL)
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Life Sciences
- Hunan University
| | - Qianqian Wang
- Molecular Science and Biomedicine Laboratory (MBL)
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Life Sciences
- Hunan University
| | - Hong-Wen Liu
- Molecular Science and Biomedicine Laboratory (MBL)
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Life Sciences
- Hunan University
| | - Xia Yin
- Molecular Science and Biomedicine Laboratory (MBL)
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Life Sciences
- Hunan University
| | - Xiao-Xiao Hu
- Molecular Science and Biomedicine Laboratory (MBL)
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Life Sciences
- Hunan University
| | - Lin Yuan
- Molecular Science and Biomedicine Laboratory (MBL)
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Life Sciences
- Hunan University
| | - Xiao-Bing Zhang
- Molecular Science and Biomedicine Laboratory (MBL)
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Life Sciences
- Hunan University
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3
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Synthesis, Stability and Relaxivity of TEEPO-Met: An Organic Radical as a Potential Tumour Targeting Contrast Agent for Magnetic Resonance Imaging. Molecules 2018; 23:molecules23051034. [PMID: 29702628 PMCID: PMC6102570 DOI: 10.3390/molecules23051034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/06/2018] [Accepted: 04/25/2018] [Indexed: 11/16/2022] Open
Abstract
Cancer is a widespread and life-threatening disease and its early-stage diagnosis is vital. One of the most effective, non-invasive tools in medical diagnostics is magnetic resonance imaging (MRI) with the aid of contrast agents. Contrast agents that are currently in clinical use contain metals, causing some restrictions in their use. Also, these contrast agents are mainly non-specific without any tissue targeting capabilities. Subsequently, the interest has notably increased in the research of organic, metal-free contrast agents. This study presents a new, stable organic radical, TEEPO-Met, where a radical moiety 2,2,6,6-tetraethylpiperidinoxide (TEEPO) is attached to an amino acid, methionine (Met), as a potentially tumour-targeting moiety. We describe the synthesis, stability assessment with electron paramagnetic resonance (EPR) spectroscopy and relaxation enhancement abilities by an in vitro nuclear magnetic resonance (NMR) and phantom MRI studies of TEEPO-Met. The new compound proved to be stable notably longer than the average imaging time in conditions mimicking a biological matrix. Also, it significantly reduced the relaxation times of water, making it a promising candidate as a novel tumour targeting contrast agent for MRI.
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Matsumoto KI, Mitchell JB, Krishna MC. Comparative studies with EPR and MRI on the in vivo tissue redox status estimation using redox-sensitive nitroxyl probes: influence of the choice of the region of interest. Free Radic Res 2018; 52:248-255. [PMID: 29320888 DOI: 10.1080/10715762.2018.1427235] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In vivo decay rates of a nitroxyl contrast agent were estimated by a MR redox imaging (MRRI) technique and compared with the decay rates obtained by the electron paramagnetic resonance spectroscopy (EPRS) and imaging (EPRI). MRRI is a dynamic imaging technique employing T1-weighted pulse sequence, which can visualise a nitroxyl-induced enhancement of signal intensity by T1-weighted contrast. EPR techniques can directly measure the paramagnetic nitroxyl radical. Both the squamous cell carcinoma (SCC) tumour-bearing and normal legs of a female C3H mouse were scanned by T1-weighted SPGR sequence at 4.7 T with the nitroxyl radical, carbamoyl-proxyl (CmP), as the contrast agent. Similarly, the time course of CmP in normal muscle and tumour tissues was obtained using a 700-MHz EPR spectrometer with a surface coil. The time course imaging of CmP was also performed by 300 MHz CW EPR imager. EPRS and EPRI gave slower decay rates of CmP compared to the MRRI. Relatively slow decay rate at peripheral region of the tumour tissues, which was found in the image obtained by MRRI, may contribute to the slower decay rates observed by EPRS and/or the EPRI measurements. To reliably determine the tissue redox status from the reduction rates of nitroxyls such as CmP, heterogenic structure in the tumour tissue must be considered. The high spatial and temporal resolution of T1-weighted MRI and the T1-enhancing capabilities of nitroxyls support the use of this method to map tissue redox status which can be a useful biomarker to guide appropriate treatments based on the tumour microenvironment.
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Affiliation(s)
- Ken-Ichiro Matsumoto
- a Quantitative Redox Sensing Team, Department of Basic Medical Sciences for Radiation Damages , National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology , Chiba-shi , Japan
| | - James B Mitchell
- b Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda , MD , USA
| | - Murali C Krishna
- b Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda , MD , USA
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Nagura K, Takemoto Y, Moronaga S, Uchida Y, Shimono S, Shiino A, Tanigaki K, Amano T, Yoshino F, Noda Y, Koizumi S, Komatsu N, Kato T, Yamauchi J, Tamura R. Preparation of Robust Metal-Free Magnetic Nanoemulsions Encapsulating Low-Molecular-Weight Nitroxide Radicals and Hydrophobic Drugs Directed Toward MRI-Visible Targeted Delivery. Chemistry 2017; 23:15713-15720. [PMID: 28815766 DOI: 10.1002/chem.201702785] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 07/27/2017] [Indexed: 01/23/2023]
Abstract
With a view to developing a theranostic nanomedicine for targeted drug delivery systems visible by magnetic resonance (MR) imaging, robust metal-free magnetic nanoemulsions (mean particle size less than 20 nm) consisting of a biocompatible surfactant and hydrophobic, low molecular weight 2,2,5-trimethyl-5-(4-alkoxy)phenylpyrrolidine-N-oxyl radicals were prepared in pH 7.4 phosphate-buffered saline (PBS). The structure of the nanoemulsions was characterized by electron paramagnetic resonance spectroscopy, and dynamic light scattering and small-angle neutron-scattering measurements. The nanoemulsions showed high colloidal stability, low cytotoxicity, enough reduction resistance to excess ascorbic acid, and sufficient contrast enhancement in the proton longitudinal relaxation time (T1 ) weighted MR images in PBS in vitro (and preliminarily in vivo). Furthermore, the hydrophobic anticancer drug paclitaxel could be encapsulated inside the nanoparticles, and the resulting paclitaxel-loaded nanoemulsions were efficiently incorporated into HeLa cells to suppress cell growth.
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Affiliation(s)
- Kota Nagura
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Yusa Takemoto
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Satori Moronaga
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Yoshiaki Uchida
- Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan.,PRESTO (Japan) Science and Technology Agency, Kawaguchi, Saitama, 332-0012, Japan
| | - Satoshi Shimono
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Akihiko Shiino
- Biomedical MR Science Center, Shiga, University of Medical Science, Seta, Otsu, 520-2192, Japan
| | - Kenji Tanigaki
- Shiga Medical Center Research Institute, Moriyama 5-4-30, Shiga, 524-8524, Japan
| | - Tsukuru Amano
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Seta, Otsu, 520-2192, Japan
| | - Fumi Yoshino
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Seta, Otsu, 520-2192, Japan
| | - Yohei Noda
- Institute of Quantum Beam Science, Ibaraki University, Ibaraki, 316-8511, Japan
| | - Satoshi Koizumi
- Institute of Quantum Beam Science, Ibaraki University, Ibaraki, 316-8511, Japan
| | - Naoki Komatsu
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Tatsuhisa Kato
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Jun Yamauchi
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Rui Tamura
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, 606-8501, Japan
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Matsumoto KI, Yamasaki T, Nakamura M, Ishikawa J, Ueno M, Nakanishi I, Sekita A, Ozawa Y, Kamada T, Aoki I, Yamada KI. Brain contrasting ability of blood-brain-barrier-permeable nitroxyl contrast agents for magnetic resonance redox imaging. Magn Reson Med 2015; 76:935-45. [PMID: 26414669 DOI: 10.1002/mrm.25918] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 08/11/2015] [Accepted: 08/12/2015] [Indexed: 12/21/2022]
Abstract
PURPOSE The detailed in vivo T1 -weighted contrasting abilities of nitroxyl contrast agents, which have been used as redox responsive contrast agents in several magnetic resonance-based imaging modalities, in mouse brain were investigated. METHODS Distribution and pharmacokinetics of five types of five-membered-ring nitroxyl radical compound were compared using T1 -weighted MRI. RESULTS The blood-brain barrier (BBB) -impermeable 3-carboxy-2,2,5,5-tetramethylpyrrolidine-N-oxyl (CxP) could not be distributed in the brain. The slightly lipophilic 3-carbamoyl-2,2,5,5-tetramethylpyrrolidine-N-oxyl (CmP) showed slight distribution only in the ventricle, but not in the medulla and cortex. The amphiphilic 3-methoxy-carbonyl-2,2,5,5-tetramethyl-pyrrolidine-N-oxyl (MCP) had good initial uniform distribution in the brain and showed typical 2-phase signal decay profiles. A brain-seeking nitroxyl probe, acetoxymethyl-2,2,5,5-tetramethyl-pyrrolidine-N-oxyl-3-carboxylate (CxP-AM), showed an accumulating phase, and then its accumulation was maintained in the medulla and ventricle regions, but not in the cortex. The lipophilic 4-(N-methyl piperidine)-2,2,5,5-tetramethylpyrroline-N-oxyl (23c) was well distributed in the cortex and medulla, but slightly in the ventricle, and showed relatively rapid linear signal decay. CONCLUSION Nitroxyl contrast agents equipped with a suitable lipophilic substitution group could be BBB-permeable functional contrast agents. MR redox imaging, which can estimate not only the redox characteristics but also the detailed distribution of the contrast agents, is a good candidate for a theranostic tool. Magn Reson Med 76:935-945, 2016. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Ken-Ichiro Matsumoto
- Radio-Redox-Response Research Team, Advanced Particle Radiation Biology Research Program, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Inage-ku, Chiba-shi, Chiba, Japan
| | - Toshihide Yamasaki
- Department of Bio-functional Science, Faculty of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Mizuki Nakamura
- Radio-Redox-Response Research Team, Advanced Particle Radiation Biology Research Program, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Inage-ku, Chiba-shi, Chiba, Japan.,Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chuo-ku, Chiba, Japan
| | - Junji Ishikawa
- Translational Research Group, Health Science Research Center, FANCL Research Institute, Totsuka-ku, Yokohama, Japan
| | - Megumi Ueno
- Radio-Redox-Response Research Team, Advanced Particle Radiation Biology Research Program, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Inage-ku, Chiba-shi, Chiba, Japan
| | - Ikuo Nakanishi
- Radio-Redox-Response Research Team, Advanced Particle Radiation Biology Research Program, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Inage-ku, Chiba-shi, Chiba, Japan
| | - Aiko Sekita
- Multimodal Molecular Imaging Team, Diagnostic Imaging Program, Molecular Imaging Center, National Institute of Radiological Sciences, Inage-ku, Chiba, Japan
| | - Yoshikazu Ozawa
- Multimodal Molecular Imaging Team, Diagnostic Imaging Program, Molecular Imaging Center, National Institute of Radiological Sciences, Inage-ku, Chiba, Japan
| | - Tadashi Kamada
- Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chuo-ku, Chiba, Japan.,Research Center Hospital, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Inage-ku, Chiba-shi, Chiba, Japan
| | - Ichio Aoki
- Multimodal Molecular Imaging Team, Diagnostic Imaging Program, Molecular Imaging Center, National Institute of Radiological Sciences, Inage-ku, Chiba, Japan
| | - Ken-Ichi Yamada
- Department of Bio-functional Science, Faculty of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan.,JST, PRESTO, Kawaguchi, Saitama, Japan
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Hyodo F, Soule BP, Matsumoto KI, Matusmoto S, Cook JA, Hyodo E, Sowers AL, Krishna MC, Mitchell JB. Assessment of tissue redox status using metabolic responsive contrast agents and magnetic resonance imaging. J Pharm Pharmacol 2008; 60:1049-60. [PMID: 18644197 DOI: 10.1211/jpp.60.8.0011] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Regulation of tissue redox status is important to maintain normal physiological conditions in the living body. Disruption of redox homoeostasis may lead to oxidative stress and can induce many pathological conditions such as cancer, neurological disorders and ageing. Therefore, imaging of tissue redox status could have clinical applications. Redox imaging employing magnetic resonance imaging (MRI) with nitroxides as cell-permeable redox-sensitive contrast agents has been used for non-invasive monitoring of tissue redox status in animal models. The redox imaging applications of nitroxide electron paramagnetic resonance imaging (EPRI) and MRI are reviewed here, with a focus on application of tumour redox status monitoring. While particular emphasis has been placed on differences in the redox status in tumours compared to selected normal tissues, the technique possesses the potential to have broad applications to the study of other disease states, inflammatory processes and other circumstances where oxidative stress is implicated.
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Affiliation(s)
- Fuminori Hyodo
- Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
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Matsumoto KI, Yakumaru H, Narazaki M, Nakagawa H, Anzai K, Ikehira H, Ikota N. Modification of nitroxyl contrast agents with multiple spins and their proton T1 relaxivity. Magn Reson Imaging 2008; 26:117-21. [PMID: 17683889 DOI: 10.1016/j.mri.2007.05.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2007] [Revised: 05/15/2007] [Accepted: 05/17/2007] [Indexed: 02/01/2023]
Abstract
The purpose of this study is to test the performance of multispin nitroxyl contrast agents in improving the sensitivity of MR detection for nitroxyl contrast agents. The relation between T(1) relaxivity and the number of paramagnetic centers in a molecule was investigated. Compound 1 is a single molecule of methoxycarbonyl-PROXYL (MC-PROXYL). Two and three MC-PROXYL molecules were chemically coupled to obtain Compounds 2 and 3, which have two and three nitroxyl spins in the molecule, respectively. A good linear relation, the slope of which increased depending on the number of nitroxyl spins in the molecule, was obtained between T(1)-weighted (fast low-angle shot) MR image contrast enhancement at 7 T and the concentration of nitroxyl contrast agents. T(1)-weighted MR image contrast enhancement and T(1) relaxivity levels of nitroxyl contrast agents were increased depending on the number of nitroxyl spins in the molecule. Multicoupling nitroxyl molecules can enhance the T(1)-weighted contrast effect while maintaining the quantitative behavior of the molecule for up to three spins.
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Affiliation(s)
- Ken-Ichiro Matsumoto
- Radiation Modifier Research Team, Heavy-Ion Radiobiology Research Group, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Chiba 263-8555, Japan.
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