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Luu CH, Nguyen NT, Ta HT. Unravelling Surface Modification Strategies for Preventing Medical Device-Induced Thrombosis. Adv Healthc Mater 2024; 13:e2301039. [PMID: 37725037 DOI: 10.1002/adhm.202301039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/29/2023] [Indexed: 09/21/2023]
Abstract
The use of biomaterials in implanted medical devices remains hampered by platelet adhesion and blood coagulation. Thrombus formation is a prevalent cause of failure of these blood-contacting devices. Although systemic anticoagulant can be used to support materials and devices with poor blood compatibility, its negative effects such as an increased chance of bleeding, make materials with superior hemocompatibility extremely attractive, especially for long-term applications. This review examines blood-surface interactions, the pathogenesis of clotting on blood-contacting medical devices, popular surface modification techniques, mechanisms of action of anticoagulant coatings, and discusses future directions in biomaterial research for preventing thrombosis. In addition, this paper comprehensively reviews several novel methods that either entirely prevent interaction between material surfaces and blood components or regulate the reaction of the coagulation cascade, thrombocytes, and leukocytes.
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Affiliation(s)
- Cuong Hung Luu
- School of Environment and Science, Griffith University, Nathan, Queensland, 4111, Australia
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
| | - Nam-Trung Nguyen
- School of Environment and Science, Griffith University, Nathan, Queensland, 4111, Australia
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
| | - Hang Thu Ta
- School of Environment and Science, Griffith University, Nathan, Queensland, 4111, Australia
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
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2
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Liu G, Guo H, Zhao W, Yan H, Zhang E, Gao L. Advancements in Preprocessing and Analysis of Nitrite and Nitrate since 2010 in Biological Samples: A Review. Molecules 2023; 28:7122. [PMID: 37894601 PMCID: PMC10609401 DOI: 10.3390/molecules28207122] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
As a substance present in organisms, nitrite is a metabolite of nitric oxide and can also be ingested. Nitrate is the metabolite of nitrite. Therefore, it is necessary to measure it quickly, easily and accurately to evaluate the health status of humans. Although there have been several reviews on analytical methods for non-biological samples, there have been no reviews focused on both sample preparation and analytical methods for biological samples. First, rapid and accurate nitrite measurement has significant effects on human health. Second, the detection of nitrite in biological samples is problematic due to its very low concentration and matrix interferences. Therefore, the pretreatment plus measuring methods for nitrite and nitrate obtained from biological samples since 2010 are summarized in the present review, and their prospects for the future are proposed. The treatment methods include liquid-liquid microextraction, various derivatization reactions, liquid-liquid extraction, protein precipitation, solid phase extraction, and cloud point extraction. Analytical methods include spectroscopic methods, paper-based analytical devices, ion chromatography, liquid chromatography, gas chromatography-mass spectrometry, electrochemical methods, liquid chromatography-mass spectrometry and capillary electrophoresis. Derivatization reagents with rapid quantitative reactions and advanced extraction methods with high enrichment efficiency are also included. Nitrate and nitrate should be determined at the same time by the same analytical method. In addition, much exploration has been performed on formulating fast testing through microfluidic technology. In this review, the newest developments in nitrite and nitrate processing are a focus in addition to novel techniques employed in such analyses.
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Affiliation(s)
- Guojie Liu
- Department of Chemistry, School of Forensic Medicine, China Medical University, Shenyang 110122, China;
- Liaoning Province Key Laboratory of Forensic Bio-Evidence Sciences, Shenyang 110122, China
- Center of Forensic Investigation, China Medical University, Shenyang 110122, China
| | - Honghui Guo
- Liaoning Province Key Laboratory of Forensic Bio-Evidence Sciences, Shenyang 110122, China
- Center of Forensic Investigation, China Medical University, Shenyang 110122, China
- Forensic Analytical Toxicology Department, School of Forensic Medicine, China Medical University, Shenyang 110122, China
| | - Wanlin Zhao
- Liaoning Province Key Laboratory of Forensic Bio-Evidence Sciences, Shenyang 110122, China
- Center of Forensic Investigation, China Medical University, Shenyang 110122, China
- Forensic Analytical Toxicology Department, School of Forensic Medicine, China Medical University, Shenyang 110122, China
| | - Hongmu Yan
- Liaoning Province Key Laboratory of Forensic Bio-Evidence Sciences, Shenyang 110122, China
- Center of Forensic Investigation, China Medical University, Shenyang 110122, China
- Forensic Analytical Toxicology Department, School of Forensic Medicine, China Medical University, Shenyang 110122, China
| | - Enze Zhang
- First Clinical College, China Medical University, Shenyang 110122, China
| | - Lina Gao
- Liaoning Province Key Laboratory of Forensic Bio-Evidence Sciences, Shenyang 110122, China
- Center of Forensic Investigation, China Medical University, Shenyang 110122, China
- Forensic Analytical Toxicology Department, School of Forensic Medicine, China Medical University, Shenyang 110122, China
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3
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Berthou M, Clarot I, Gouyon J, Steyer D, Monat MA, Boudier A, Pallotta A. Thiol sensing: From current methods to nanoscale contribution. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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MOFs and MOF-Derived Materials for Antibacterial Application. J Funct Biomater 2022; 13:jfb13040215. [PMID: 36412856 PMCID: PMC9680240 DOI: 10.3390/jfb13040215] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/28/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022] Open
Abstract
Bacterial infections pose a serious threat to people's health. Efforts are being made to develop antibacterial agents that can inhibit bacterial growth, prevent biofilm formation, and kill bacteria. In recent years, materials based on metal organic frameworks (MOFs) have attracted significant attention for various antibacterial applications due to their high specific surface area, high enzyme-like activity, and continuous release of metal ions. This paper reviews the recent progress of MOFs as antibacterial agents, focusing on preparation methods, fundamental antibacterial mechanisms, and strategies to enhance their antibacterial effects. Finally, several prospects related to MOFs for antibacterial application are proposed, aiming to provide possible research directions in this field.
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Tuttle RR, Finke RG, Reynolds MM. Cu II Lewis Acid, Proton-Coupled Electron Transfer Mechanism for Cu-Metal–Organic Framework-Catalyzed NO Release from S-Nitrosoglutathione. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00477] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert R. Tuttle
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Richard G. Finke
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Melissa M. Reynolds
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
- Department of Chemical & Biological Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
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6
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He NY, Chen LS, Sun AZ, Zhao Y, Yin SN, Guo FQ. A nitric oxide burst at the shoot apex triggers a heat-responsive pathway in Arabidopsis. NATURE PLANTS 2022; 8:434-450. [PMID: 35437002 DOI: 10.1038/s41477-022-01135-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
When confronted with heat stress, plants depend on the timely activation of cellular defences to survive by perceiving the rising temperature. However, how plants sense heat at the whole-plant level has remained unanswered. Here we demonstrate that shoot apical nitric oxide (NO) bursting under heat stress as a signal triggers cellular heat responses at the whole-plant level on the basis of our studies mainly using live-imaging of transgenic plants harbouring pHsfA2::LUC, micrografting, NO accumulation mutants and liquid chromatography-tandem mass spectrometry analysis in Arabidopsis. Furthermore, we validate that S-nitrosylation of the trihelix transcription factor GT-1 by S-nitrosoglutathione promotes its binding to NO-responsive elements in the HsfA2 promoter and that loss of function of GT-1 disrupts the activation of HsfA2 and heat tolerance, revealing that GT-1 is the long-sought mediator linking signal perception to the activation of cellular heat responses. These findings uncover a heat-responsive mechanism that determines the timing and execution of cellular heat responses at the whole-plant level.
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Affiliation(s)
- Ning-Yu He
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Li-Sha Chen
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Ai-Zhen Sun
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Yao Zhao
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Shui-Ning Yin
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Fang-Qing Guo
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai, China.
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7
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Berthou M, Pallotta A, Beurton J, Chaigneau T, Athanassiou A, Marcic C, Marchioni E, Boudier A, Clarot I. Gold nanostructured membranes to concentrate low molecular weight thiols, a proof of concept study. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1198:123244. [DOI: 10.1016/j.jchromb.2022.123244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 03/28/2022] [Accepted: 04/01/2022] [Indexed: 01/02/2023]
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8
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Tuttle RR, Daly RE, Rithner CD, Reynolds MM. Monitoring a MOF Catalyzed Reaction Directly in Blood Plasma. ACS APPLIED MATERIALS & INTERFACES 2021; 13:52006-52013. [PMID: 34280308 DOI: 10.1021/acsami.1c08917] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Herein, we establish a method to quantitatively monitor a metal-organic framework (MOF)-catalyzed, biomedically relevant reaction directly in blood plasma, specifically, the generation of nitric oxide (NO) from the endogenous substrate S-nitrosoglutathione (GSNO) catalyzed by H3[(Cu4Cl)3-(BTTri)8] (CuBTTri). The reaction monitoring method uses UV-vis and 1H NMR spectroscopies along with a nitric oxide analyzer (NOA) to yield the reaction stoichiometry and catalytic rate for GSNO to NO conversion catalyzed by CuBTTri in blood plasma. The results show 100% loss of GSNO within 16 h and production of 1 equiv. of glutathione disulfide (GSSG) per 2 equiv. of GSNO. Only 78 ± 10% recovery of NO(g) was observed, indicating that blood plasma can scavenge the generated NO before it can escape the reaction vessel. Significantly, to best apply and understand reaction systems with biomedical importance, such as NO release catalyzed by CuBTTri, methods to study the reaction directly in biological solvents must be developed.
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9
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Luo C, DeStefano JJ, Langlois TJ, Boyes BE, Schuster SA, Godinho JM. Fundamental to achieving fast separations with high efficiency: A review of chromatography with superficially porous particles. Biomed Chromatogr 2021; 35:e5087. [PMID: 33566360 DOI: 10.1002/bmc.5087] [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] [Received: 12/16/2020] [Revised: 01/26/2021] [Accepted: 02/05/2021] [Indexed: 01/16/2023]
Abstract
Types of particles have been fundamental to LC separation technology for many years. Originally, LC columns were packed with large-diameter (>100 μm) calcium carbonate, silica gel, or alumina particles that prohibited fast mobile-phase speeds because of the slow diffusion of sample molecules inside deep pores. During the birth of HPLC in the 1960s, superficially porous particles (SPP, ≥30 μm) were developed as the first high-speed stationary-phase support structures commercialized, which permitted faster mobile-phase flowrates due to the fast movement of sample molecules in/out of the thin shells. These initial SPPs were displaced by smaller totally porous particles (TPP) in the mid-1970s. But SPP history repeated when UHPLC emerged in the 2000s. Stationary-phase support structures made from sub-3-μm SPPs were introduced to chromatographers in 2006. The initial purpose of this modern SPP was to enable chromatographers to achieve fast separations with high efficiency using conventional HPLCs. Later, the introduction of sub-2-μm SPPs with UHPLC instruments pushed the separation speed and efficiency to a very fast zone. This review aims at providing readers a comprehensive and up-to-date view on the advantages of SPP materials over TPPs historically and theoretically from the material science angle.
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Affiliation(s)
- Chuping Luo
- Advanced Materials Technology, Inc, Wilmington, Delaware, USA
| | | | | | - Barry E Boyes
- Advanced Materials Technology, Inc, Wilmington, Delaware, USA
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10
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Roberts TR, Garren M, Handa H, Batchinsky AI. Toward an artificial endothelium: Development of blood-compatible surfaces for extracorporeal life support. J Trauma Acute Care Surg 2020; 89:S59-S68. [PMID: 32251267 PMCID: PMC7398848 DOI: 10.1097/ta.0000000000002700] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A new generation of extracorporeal artificial organ support technologies, collectively known as extracorporeal life support (ECLS) devices, is being developed for diverse applications to include acute support for trauma-induced organ failure, transitional support for bridge to organ transplant, and terminal support for chronic diseases. Across applications, one significant complication limits the use of these life-saving devices: thrombosis, bleeding, and inflammation caused by foreign surface-induced blood interactions. To address this challenge, transdisciplinary scientists and clinicians look to the vascular endothelium as inspiration for development of new biocompatible materials for ECLS. Here, we describe clinically approved and new investigational biomaterial solutions for thrombosis, such as immobilized heparin, nitric oxide-functionalized polymers, "slippery" nonadhesive coatings, and surface endothelialization. We describe how hemocompatible materials could abrogate the use of anticoagulant drugs during ECLS and by doing so radically change treatments in critical care. Additionally, we examine several special considerations for the design of biomaterials for ECLS, including: (1) preserving function of the artificial organ, (2) longevity of use, and (3) multifaceted approaches for the diversity of device functions and applications.
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Affiliation(s)
- Teryn R. Roberts
- Autonomous Reanimation and Evacuation Program, San Antonio, TX, USA
- The Geneva Foundation, Tacoma, WA, USA
- U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
| | - Mark Garren
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA, USA
| | - Hitesh Handa
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA, USA
| | - Andriy I. Batchinsky
- Autonomous Reanimation and Evacuation Program, San Antonio, TX, USA
- The Geneva Foundation, Tacoma, WA, USA
- U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
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11
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Yang T, Zelikin AN, Chandrawati R. Enzyme Mimics for the Catalytic Generation of Nitric Oxide from Endogenous Prodrugs. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1907635. [PMID: 32372556 DOI: 10.1002/smll.201907635] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/19/2020] [Indexed: 06/11/2023]
Abstract
The highly diverse biological roles of nitric oxide (NO) in both physiological and pathophysiological processes have prompted great interest in the use of NO as a therapeutic agent in various biomedical applications. NO can exert either protective or deleterious effects depending on its concentration and the location where it is delivered or generated. This double-edged attribute, together with the short half-life of NO in biological systems, poses a major challenge to the realization of the full therapeutic potential of this molecule. Controlled release strategies show an admirable degree of precision with regard to the spatiotemporal dosing of NO but are disadvantaged by the finite NO deliverable payload. In turn, enzyme-prodrug therapy techniques afford enhanced deliverable payload but are troubled by the inherent low stability of natural enzymes, as well as the requirement to control pharmacokinetics for the exogenous prodrugs. The past decade has seen the advent of a new paradigm in controlled delivery of NO, namely localized bioconversion of the endogenous prodrugs of NO, specifically by enzyme mimics. These early developments are presented, successes of this strategy are highlighted, and possible future work on this avenue of research is critically discussed.
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Affiliation(s)
- Tao Yang
- School of Chemical Engineering and Australian Centre for Nanomedicine (ACN), The University of New South Wales (UNSW Sydney), Sydney, NSW, 2052, Australia
| | - Alexander N Zelikin
- Department of Chemistry and iNANO Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, C 8000, Denmark
| | - Rona Chandrawati
- School of Chemical Engineering and Australian Centre for Nanomedicine (ACN), The University of New South Wales (UNSW Sydney), Sydney, NSW, 2052, Australia
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12
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Mata-Pérez C, Padilla MN, Sánchez-Calvo B, Begara-Morales JC, Valderrama R, Chaki M, Aranda-Caño L, Moreno-González D, Molina-Díaz A, Barroso JB. Endogenous Biosynthesis of S-Nitrosoglutathione From Nitro-Fatty Acids in Plants. FRONTIERS IN PLANT SCIENCE 2020; 11:962. [PMID: 32714353 PMCID: PMC7340149 DOI: 10.3389/fpls.2020.00962] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 06/11/2020] [Indexed: 05/05/2023]
Abstract
Nitro-fatty acids (NO2-FAs) are novel molecules resulting from the interaction of unsaturated fatty acids and nitric oxide (NO) or NO-related molecules. In plants, it has recently been described that NO2-FAs trigger an antioxidant and a defence response against stressful situations. Among the properties of NO2-FAs highlight the ability to release NO therefore modulating specific protein targets through post-translational modifications (NO-PTMs). Thus, based on the capacity of NO2-FAs to act as physiological NO donors and using high-accuracy mass-spectrometric approaches, herein, we show that endogenous nitro-linolenic acid (NO2-Ln) can modulate S-nitrosoglutathione (GSNO) biosynthesis in Arabidopsis. The incubation of NO2-Ln with GSH was analyzed by LC-MS/MS and the in vitro synthesis of GSNO was noted. The in vivo confirmation of this behavior was carried out by incubating Arabidopsis plants with 15N-labeled NO2-Ln throughout the roots, and 15N-labeled GSNO (GS15NO) was detected in the leaves. With the aim to go in depth in the relation of NO2-FA and GSNO in plants, Arabidopsis alkenal reductase mutants (aer mutants) which modulate NO2-FAs levels were used. Our results constitute the first evidence of the modulation of a key NO biological reservoir in plants (GSNO) by these novel NO2-FAs, increasing knowledge about S-nitrosothiols and GSNO-signaling pathways in plants.
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Affiliation(s)
- Capilla Mata-Pérez
- Group of Biochemistry and Cell Signalling in Nitric Oxide, Department of Experimental Biology, Center for Advanced Studies in Olive Grove and Olive Oils, Faculty of Experimental Sciences, University of Jaén, Jaén, Spain
| | - María N. Padilla
- Group of Biochemistry and Cell Signalling in Nitric Oxide, Department of Experimental Biology, Center for Advanced Studies in Olive Grove and Olive Oils, Faculty of Experimental Sciences, University of Jaén, Jaén, Spain
| | - Beatriz Sánchez-Calvo
- Group of Biochemistry and Cell Signalling in Nitric Oxide, Department of Experimental Biology, Center for Advanced Studies in Olive Grove and Olive Oils, Faculty of Experimental Sciences, University of Jaén, Jaén, Spain
| | - Juan C. Begara-Morales
- Group of Biochemistry and Cell Signalling in Nitric Oxide, Department of Experimental Biology, Center for Advanced Studies in Olive Grove and Olive Oils, Faculty of Experimental Sciences, University of Jaén, Jaén, Spain
| | - Raquel Valderrama
- Group of Biochemistry and Cell Signalling in Nitric Oxide, Department of Experimental Biology, Center for Advanced Studies in Olive Grove and Olive Oils, Faculty of Experimental Sciences, University of Jaén, Jaén, Spain
| | - Mounira Chaki
- Group of Biochemistry and Cell Signalling in Nitric Oxide, Department of Experimental Biology, Center for Advanced Studies in Olive Grove and Olive Oils, Faculty of Experimental Sciences, University of Jaén, Jaén, Spain
| | - Lorena Aranda-Caño
- Group of Biochemistry and Cell Signalling in Nitric Oxide, Department of Experimental Biology, Center for Advanced Studies in Olive Grove and Olive Oils, Faculty of Experimental Sciences, University of Jaén, Jaén, Spain
| | - David Moreno-González
- Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, Jaén, Spain
| | - Antonio Molina-Díaz
- Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, Jaén, Spain
| | - Juan B. Barroso
- Group of Biochemistry and Cell Signalling in Nitric Oxide, Department of Experimental Biology, Center for Advanced Studies in Olive Grove and Olive Oils, Faculty of Experimental Sciences, University of Jaén, Jaén, Spain
- *Correspondence: Juan B. Barroso,
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13
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Tuttle RR, Rubin HN, Rithner CD, Finke RG, Reynolds MM. Copper ion vs copper metal-organic framework catalyzed NO release from bioavailable S-Nitrosoglutathione en route to biomedical applications: Direct 1H NMR monitoring in water allowing identification of the distinct, true reaction stoichiometries and thiol dependencies. J Inorg Biochem 2019; 199:110760. [PMID: 31349071 DOI: 10.1016/j.jinorgbio.2019.110760] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 06/24/2019] [Accepted: 07/07/2019] [Indexed: 01/23/2023]
Abstract
Copper containing compounds catalyze decomposition of S-Nitrosoglutathione (GSNO) in the presence of glutathione (GSH) yielding glutathione disulfide (GSSG) and nitric oxide (NO). Extended NO generation from an endogenous source is medically desirable to achieve vasodilation, reduction in biofilms on medical devices, and antibacterial activity. Homogeneous and heterogeneous copper species catalyze release of NO from endogenous GSNO. One heterogeneous catalyst used for GSNO decomposition in blood plasma is the metal-organic framework (MOF), H3[(Cu4Cl)3-(BTTri)8, H3BTTri = 1,3,5-tris(1H-1,2,3-triazol-5-yl) benzene] (CuBTTri). Fundamental questions about these systems remain unanswered, despite their use in biomedical applications, in part because no method previously existed for simultaneous tracking of [GSNO], [GSH], and [GSSG] in water. Tracking these reactions in water is a necessary step towards study in biological media (blood is approximately 80% water) where NO release systems must operate. Even the balanced stoichiometry remains unknown for copper-ion and CuBTTri catalyzed GSNO decomposition. Herein, we report a direct 1H NMR method which: simultaneously monitors [GSNO], [GSH], and [GSSG] in water; provides the experimentally determined stoichiometry for copper-ion vs CuBTTri catalyzed GSNO decomposition; reveals that the CuBTTri-catalyzed reaction reaches 10% GSNO decomposition (16 h) without added GSH, yet the copper-ion catalyzed reaction reaches 100% GSNO decomposition (16 h) without added GSH; and shows 100% GSNO decomposition upon addition of stoichiometric GSH to the CuBTTri catalyzed reaction. These observations provide evidence that copper-ion and CuBTTri catalyzed GSNO decomposition in water operate through different reaction mechanisms, the details of which can now be probed by 1H NMR kinetics and other needed studies.
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Affiliation(s)
- Robert R Tuttle
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States
| | - Heather N Rubin
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States
| | - Christopher D Rithner
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States
| | - Richard G Finke
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States
| | - Melissa M Reynolds
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States; School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, United States; Department of Chemical & Biological Engineering, Colorado State University, Fort Collins, CO 80523, United States.
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14
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Yu H, Chaimbault P, Clarot I, Chen Z, Leroy P. Labeling nitrogen species with the stable isotope 15N for their measurement by separative methods coupled with mass spectrometry: A review. Talanta 2019; 191:491-503. [DOI: 10.1016/j.talanta.2018.09.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 08/30/2018] [Accepted: 09/04/2018] [Indexed: 02/09/2023]
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15
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Hanff E, Zinke M, Böhmer A, Niebuhr J, Maassen M, Endeward V, Maassen N, Tsikas D. GC-MS determination of nitrous anhydrase activity of bovine and human carbonic anhydrase II and IV. Anal Biochem 2018; 550:132-136. [PMID: 29729279 DOI: 10.1016/j.ab.2018.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/30/2018] [Accepted: 05/01/2018] [Indexed: 12/21/2022]
Abstract
The most widely recognized activity of the large family of the metalloenzyme carbonic anhydrases (CAs) is the diffusion-controlled hydration of CO2 to HCO3- and one proton, and the less rapid dehydration of HCO3- to CO2: CO2 + H2O ⇆ HCO3- + H+. CAs also catalyze the reaction of water with other electrophiles such as aromatic esters, sulfates and phosphates, thus contributing to lending to CAs esterase, sulfatase and phosphatase activity, respectively. Renal CAII and CAIV are involved in the reabsorption of nitrite, the autoxidation product of the signalling molecule nitric oxide (NO): 4 NO + O2 + 2 H2O → 4 ONO- + 4 H+. Bovine and human CAII and CAIV have been reported to exert nitrite reductase and nitrous anhydride activity: 2 NO2- + 2 H+ ⇆ [2 HONO] ⇆ N2O3 + H2O. In the presence of L-cysteine, NO may be formed. In the literature, these issues are controversial, mainly due to analytical shortcomings, i.e., the inability to detect authentic HONO and N2O3. Here, we present a gas chromatography-mass spectrometry (GC-MS) assay to unambiguously detect and quantify the nitrous anhydrase activity of CAs. The assay is based on the hydrolysis of N2O3 in H218O to form ON18O- and 18ON18O-. After pentafluorobenzyl bromide derivatization and electron capture negative-ion chemical ionization of the pentafluorobenzyl nitro derivatives, quantification is performed by selected-ion monitoring of the anions with mass-to-charge (m/z) ratios of 46 (ONO-), m/z 48 (ON18O- and 18ONO-), m/z 50 (18ON18O-) and m/z 47 (O15NO-, internal standard).
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Affiliation(s)
- Erik Hanff
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, Hannover, Germany
| | - Maximilian Zinke
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, Hannover, Germany
| | - Anke Böhmer
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, Hannover, Germany
| | - Janine Niebuhr
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, Hannover, Germany
| | - Mirja Maassen
- Institute of Sport Medicine, Hannover Medical School, Hannover, Germany; Institute of Sport Science, Leibniz University Hannover, Hannover, Germany
| | - Volker Endeward
- Institute of Vegetative Physiology, Hannover Medical School, Germany
| | - Norbert Maassen
- Institute of Sport Medicine, Hannover Medical School, Hannover, Germany
| | - Dimitrios Tsikas
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, Hannover, Germany.
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16
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Wang X, Garcia CT, Gong G, Wishnok JS, Tannenbaum SR. Automated Online Solid-Phase Derivatization for Sensitive Quantification of Endogenous S-Nitrosoglutathione and Rapid Capture of Other Low-Molecular-Mass S-Nitrosothiols. Anal Chem 2018; 90:1967-1975. [PMID: 29271637 PMCID: PMC5892179 DOI: 10.1021/acs.analchem.7b04049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
S-Nitrosothiols (RSNOs) constitute a circulating endogenous reservoir of nitric oxide and have important biological activities. In this study, an online coupling of solid-phase derivatization (SPD) with liquid chromatography-mass spectrometry (LC-MS) was developed and applied in the analysis of low-molecular-mass RSNOs. A derivatizing-reagent-modified polymer monolithic column was prepared and adapted for online SPD-LC-MS. Analytes from the LC autosampler flowed through the monolithic column for derivatization and then directly into the LC-MS for analysis. This integration of the online derivatization, LC separation, and MS detection facilitated system automation, allowing rapid, laborsaving, and sensitive detection of RSNOs. S-Nitrosoglutathione (GSNO) was quantified using this automated online method with good linearity (R2 = 0.9994); the limit of detection was 0.015 nM. The online SPD-LC-MS method has been used to determine GSNO levels in mouse samples, 138 ± 13.2 nM of endogenous GSNO was detected in mouse plasma. Besides, the GSNO concentrations in liver (64.8 ± 11.3 pmol/mg protein), kidney (47.2 ± 6.1 pmol/mg protein), heart (8.9 ± 1.8 pmol/mg protein), muscle (1.9 ± 0.3 pmol/mg protein), hippocampus (5.3 ± 0.9 pmol/mg protein), striatum (6.7 ± 0.6 pmol/mg protein), cerebellum (31.4 ± 6.5 pmol/mg protein), and cortex (47.9 ± 4.6 pmol/mg protein) were also successfully quantified. When the derivatization was performed within 8 min, followed by LC-MS detection, samples could be rapidly analyzed compared with the offline manual method. Other low-molecular-mass RSNOs, such as S-nitrosocysteine and S-nitrosocysteinylglycine, were captured by rapid precursor-ion scanning, showing that the proposed method is a potentially powerful tool for capture, identification, and quantification of RSNOs in biological samples.
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Affiliation(s)
- Xin Wang
- Department of Biological Engineering Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Carlos T. Garcia
- Department of Biological Engineering Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Guanyu Gong
- Department of Biological Engineering Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - John S. Wishnok
- Department of Biological Engineering Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Steven R. Tannenbaum
- Department of Biological Engineering Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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17
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Tsikas D, Hanff E. Measurement of S -Nitrosoglutathione in Plasma by Liquid Chromatography-Tandem Mass Spectrometry. Methods Mol Biol 2018; 1747:113-129. [PMID: 29600455 DOI: 10.1007/978-1-4939-7695-9_10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
Abstract
This chapter describes an ultraperformance liquid chromatographic-tandem mass spectrometric (UPLC-MS/MS) method for the quantitative determination of S-nitrosoglutathione (GSNO) in human plasma. S-[15N]Nitrosoglutathione (GS15NO) serves as the internal standard. The protocol involves inactivation of plasma γ-glutamyltransferase activity by serine-borate, stabilization of GSNO with EDTA, and avoidance of S-transnitrosylation reactions by blocking SH groups with N-ethylmaleimidide (NEM). Fresh blood is treated with NEM/serine-borate/EDTA, plasma is spiked with GS15NO (50 nM), ultrafiltered (cutoff 10 kDa) and 10-μL aliquots of ultrafiltrate are analyzed by UPLC-MS/MS in the positive electrospray ionization (ESI+) mode. LC is performed on a Nucleoshell column using isocratic (0.5 mL/min) elution with acetonitrile-20 mM ammonium formate (70:30, v/v), pH 7. Quantification is performed by selected-reaction monitoring the mass transition m/z 337 ([M+H]+) → m/z 307 ([M+H-14NO]+●) for GSNO and m/z 338 ([M+H]+) → m/z 307 ([M+H-15NO]+●) for GS15NO. Matrix effects are outweighed by the internal standard GS15NO. The lower limit of quantitation (LOQ) is 2.8 nM.
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Affiliation(s)
- Dimitrios Tsikas
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, Hannover, Germany.
| | - Erik Hanff
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, Hannover, Germany
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18
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Tsikas D, Schwedhelm KS, Surdacki A, Giustarini D, Rossi R, Kukoc-Modun L, Kedia G, Ückert S. S-Nitroso- N-acetyl-L-cysteine ethyl ester (SNACET) and N-acetyl-L-cysteine ethyl ester (NACET)-Cysteine-based drug candidates with unique pharmacological profiles for oral use as NO, H 2S and GSH suppliers and as antioxidants: Results and overview. J Pharm Anal 2017; 8:1-9. [PMID: 29568662 PMCID: PMC5859134 DOI: 10.1016/j.jpha.2017.12.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 12/05/2017] [Accepted: 12/08/2017] [Indexed: 12/21/2022] Open
Abstract
S-Nitrosothiols or thionitrites with the general formula RSNO are formally composed of the nitrosyl cation (NO+) and a thiolate (RS−), the base of the corresponding acids RSH. The smallest S-nitrosothiol is HSNO and derives from hydrogen sulfide (HSH, H2S). The most common physiological S-nitrosothiols are derived from the amino acid L-cysteine (CysSH). Thus, the simplest S-nitrosothiol is S-nitroso-L-cysteine (CysSNO). CysSNO is a spontaneous potent donor of nitric oxide (NO) which activates soluble guanylyl cyclase to form cyclic guanosine monophosphate (cGMP). This activation is associated with multiple biological actions that include relaxation of smooth muscle cells and inhibition of platelet aggregation. Like NO, CysSNO is a short-lived species and occurs physiologically at concentrations around 1 nM in human blood. CysSNO can be formed from CysSH and higher oxides of NO including nitrous acid (HONO) and its anhydride (N2O3). The most characteristic feature of RSNO is the S-transnitrosation reaction by which the NO+ group is reversibly transferred to another thiolate. By this way numerous RSNO can be formed such as the low-molecular-mass S-nitroso-N-acetyl-L-cysteine (SNAC) and S-nitroso-glutathione (GSNO), and the high-molecular-mass S-nitrosol-L-cysteine hemoglobin (HbCysSNO) present in erythrocytes and S-nitrosol-L-cysteine albumin (AlbCysSNO) present in plasma at concentrations of the order of 200 nM. All above mentioned RSNO exert NO-related biological activity, but they must be administered intravenously. This important drawback can be overcome by lipophilic charge-free RSNO. Thus, we prepared the ethyl ester of SNAC, the S-nitroso-N-acetyl-L-cysteine ethyl ester (SNACET), from synthetic N-acetyl-L-cysteine ethyl ester (NACET). Both NACET and SNACET have improved pharmacological features over N-acetyl-L-cysteine (NAC) and S-nitroso-N-acetyl-L-cysteine (SNAC), respectively, including higher oral bioavailability. SNACET exerts NO-related activities which can be utilized in the urogenital tract and in the cardiovascular system. NACET, with high oral bioavailability, is a strong antioxidant and abundant precursor of GSH, unlike its free acid N-acetyl-L-cysteine (NAC). Here, we review the chemical and pharmacological properties of SNACET and NACET as well as their analytical chemistry. We also report new results from the ingestion of S-[15N]nitroso-N-acetyl-L-cysteine ethyl ester (S15NACET) demonstrating the favorable pharmacological profile of SNACET.
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Affiliation(s)
- Dimitrios Tsikas
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, 30623 Hannover, Germany
| | - Kathrin S Schwedhelm
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, 30623 Hannover, Germany
| | - Andrzej Surdacki
- Second Department of Cardiology, Jagiellonian University Medical College, Cracow, Poland
| | - Daniela Giustarini
- Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy
| | - Ranieri Rossi
- Department of Life Sciences, Laboratory of Pharmacology and Toxicology, University of Siena, 53100 Siena, Italy
| | - Lea Kukoc-Modun
- Department of Analytical Chemistry, Faculty of Chemistry and Technology, University of Split, 21000 Split, Croatia
| | - George Kedia
- Department of Urology and Urological Oncology, Hannover Medical School, 30623 Hannover, Germany
| | - Stefan Ückert
- Department of Urology and Urological Oncology, Hannover Medical School, 30623 Hannover, Germany
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19
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Lacking linearity in quantitative stable-isotope LC–MS/MS measurement of F2-isoprostanes is an irrefutable indicator of analytical inadequacy. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1064:139-142. [DOI: 10.1016/j.jchromb.2017.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 09/02/2017] [Indexed: 01/26/2023]
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20
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Mioto PT, Rodríguez-Ruiz M, Mot AC, Zuccarelli R, Corpas FJ, Freschi L, Mercier H. Alternative fluorimetric-based method to detect and compare total S-nitrosothiols in plants. Nitric Oxide 2017; 68:7-13. [PMID: 28274830 DOI: 10.1016/j.niox.2017.03.001] [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: 10/30/2016] [Revised: 01/18/2017] [Accepted: 03/03/2017] [Indexed: 01/07/2023]
Abstract
Nitric oxide (NO) is an important signaling molecule occurring in virtually all organisms, whose mechanism of action relies mainly on its interaction with proteins or peptides by nitrosylation, forming compounds such as S-nitrosothiols (SNO). The Saville reaction and the ozone-based chemiluminescence method are the main techniques used for nitrosylated protein quantification. While the Saville assay is not very sensitive, the ozone-based chemiluminescence is expensive and time-consuming. Here we propose a method in which the protein-bound NO groups are exposed to UV light, cleaving the bond and allowing the quantification of the derived NO molecules by diamino-rhodamine (DAR) dyes. The DAR-based method was shown to be specific in plant tissues by pre-treatment of the samples with reducing agents and parallel EPR analysis. Spike-and-recovery assays revealed 72% recovery after a GSNO spike. Moreover, the method was significantly more sensitive than the Saville reaction, and this increase in sensitivity was crucial for detecting the reduced levels of nitrosylated proteins in plant species other than Arabidopsis. The method presented here is a suitable alternative to compare plant samples, allowing simple and fast detection of nitrosylated proteins.
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Affiliation(s)
- Paulo Tamaso Mioto
- Department of Botany, Biological Sciences Center, Universidade Federal de Santa Catarina, Campus Reitor João David Ferreira Lima, s/n, 88040-900, Florianópolis, Brazil.
| | - Marta Rodríguez-Ruiz
- Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, CSIC, C/Profesor Albareda 1, E-18008, Granada, Spain
| | - Augustin Catalin Mot
- Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 1 Mihail Kogălniceanu, 400084, Cluj Napoca, Romania
| | - Rafael Zuccarelli
- Department of Botany, Institute of Biosciences, Universidade de São Paulo, Rua do Matão 277, 05508-090, São Paulo, Brazil
| | - Francisco J Corpas
- Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, CSIC, C/Profesor Albareda 1, E-18008, Granada, Spain
| | - Luciano Freschi
- Department of Botany, Institute of Biosciences, Universidade de São Paulo, Rua do Matão 277, 05508-090, São Paulo, Brazil
| | - Helenice Mercier
- Department of Botany, Institute of Biosciences, Universidade de São Paulo, Rua do Matão 277, 05508-090, São Paulo, Brazil
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21
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GC-ECNICI-MS analysis of S-nitrosothiols and nitroprusside after treatment with aqueous sulphide (S2−) and derivatization with pentafluorobenzyl bromide: Evidence of S-transnitrosylation and formation of nitrite and nitrate. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1043:209-218. [DOI: 10.1016/j.jchromb.2016.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 08/24/2016] [Accepted: 09/01/2016] [Indexed: 01/31/2023]
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22
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Lutzke A, Tapia JB, Neufeld MJ, Reynolds MM. Sustained Nitric Oxide Release from a Tertiary S-Nitrosothiol-based Polyphosphazene Coating. ACS APPLIED MATERIALS & INTERFACES 2017; 9:2104-2113. [PMID: 28068065 DOI: 10.1021/acsami.6b12888] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Nitric oxide (NO) occurs naturally in mammalian biochemistry as a critical signaling molecule and exhibits antithrombotic, antibacterial, and wound-healing properties. NO-forming biodegradable polymers have been utilized in the development of antithrombotic or antibacterial materials for biointerfacial applications, including tissue engineering and the fabrication of erodible coatings for medical devices such as stents. Use of such NO-forming polymers has frequently been constrained by short-term release or limited NO storage capacity and has led to the pursuit of new materials with improved NO release function. Herein, we report the development of an NO-releasing bioerodible coating prepared from poly[bis(3-mercapto-3-methylbut-1-yl glycinyl)phosphazene] (POP-Gly-MMB), a polyphosphazene based on glycine and the naturally occurring tertiary thiol 3-mercapto-3-methylbutan-1-ol (MMB). To evaluate the NO release properties of this material, the thiolated polymer POP-Gly-MMB-SH was applied as a coating to glass substrates and subsequently converted to the NO-forming S-nitrosothiol (RSNO) derivative (POP-Gly-MMB-NO) by immersion in a mixture of tert-butyl nitrite (t-BuONO) and pentane. NO release flux from the coated substrates was determined by chemiluminescence-based NO measurement and was found to remain in a physiologically relevant range for up to 2 weeks (6.5-0.090 nmol of NO·min-1·cm-2) when immersed in pH 7.4 phosphate-buffered saline (PBS) at 37 °C. Furthermore, the coating exhibited an overall NO storage capacity of 0.89 ± 0.09 mmol·g-1 (4.3 ± 0.6 μmol·cm-2). Erosion of POP-Gly-MMB-NO in PBS at 37 °C over 6 weeks results in 14% mass loss, and time-of-flight mass spectrometry (TOF-MS) was used to characterize the organic products of hydrolytic degradation as glycine, MMB, and several related esters. The comparatively long-term NO release and high storage capacity of POP-Gly-MMB-NO coatings suggest potential as a source of therapeutic NO for biomedical applications.
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Affiliation(s)
- Alec Lutzke
- Department of Chemistry, ‡School of Biomedical Engineering, and §Department of Chemical & Biological Engineering, Colorado State University , Fort Collins, Colorado 80523, United States
| | - Jesus B Tapia
- Department of Chemistry, ‡School of Biomedical Engineering, and §Department of Chemical & Biological Engineering, Colorado State University , Fort Collins, Colorado 80523, United States
| | - Megan J Neufeld
- Department of Chemistry, ‡School of Biomedical Engineering, and §Department of Chemical & Biological Engineering, Colorado State University , Fort Collins, Colorado 80523, United States
| | - Melissa M Reynolds
- Department of Chemistry, ‡School of Biomedical Engineering, and §Department of Chemical & Biological Engineering, Colorado State University , Fort Collins, Colorado 80523, United States
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23
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Hanff E, Böhmer A, Zinke M, Gambaryan S, Schwarz A, Supuran CT, Tsikas D. Carbonic anhydrases are producers of S-nitrosothiols from inorganic nitrite and modulators of soluble guanylyl cyclase in human platelets. Amino Acids 2016; 48:1695-706. [PMID: 27129464 DOI: 10.1007/s00726-016-2234-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 04/08/2016] [Indexed: 12/29/2022]
Abstract
Nitric oxide (NO), S-nitrosoglutathione (GSNO) and S-nitrosocysteine are highly potent signaling molecules, acting both by cGMP-dependent and cGMP-independent mechanisms. The NO metabolite nitrite (NO2 (-)) is a major NO reservoir. Hemoglobin, xanthine oxidoreductase and carbonic anhydrase (CA) have been reported to reduce/convert nitrite to NO. We evaluated the role and the physiological importance of CA for an extra-platelet CA/nitrite/NO/cGMP pathway in human platelets. Authentic NO was analyzed by an NO-sensitive electrode. GSNO and GS(15)NO were measured by liquid chromatography-tandem mass spectrometry (LC-MS/MS). cGMP was determined by LC-MS/MS or RIA. In reduced glutathione (GSH) containing aqueous buffer (pH 7.4), human and bovine erythrocytic CAII-mediated formation of GSNO from nitrite and GS(15)NO from (15)N-nitrite. In the presence of L-cysteine and GSH, this reaction was accompanied by NO release. Incubation of nitrite with bovine erythrocytic CAII and recombinant soluble guanylyl cyclase resulted in cGMP formation. Upon incubation of nitrite with bovine erythrocytic CAII and washed human platelets, cGMP and P-VASP(S239) were formed in the platelets. This study provides the first evidence that extra-platelet nitrite and erythrocytic CAII may modulate platelet function in a cGMP-dependent manner. The new nitrite-dependent CA activity may be a general principle and explain the cardioprotective effects of inorganic nitrite in the vasculature. We propose that nitrous acid (ONOH) is the primary CA-catalyzed reaction product of nitrite.
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Affiliation(s)
- Erik Hanff
- Centre of Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Anke Böhmer
- Centre of Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Maximilian Zinke
- Centre of Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Stepan Gambaryan
- Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia.,Department of Cytology and Histology, S. Petersburg State University, Universitetskaya Nab 7/9, 199034, S. Petersburg, Russia
| | - Alexandra Schwarz
- Centre of Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Claudiu T Supuran
- Dipartimento Neurofarba, Sezione di Scienze Farmaceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019, Sesto Fiorentino, Florence, Italy
| | - Dimitrios Tsikas
- Centre of Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
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24
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Tsikas D, Böhmer A, Gros G, Endeward V. Evidence of the chemical reaction of (18)O-labelled nitrite with CO2 in aqueous buffer of neutral pH and the formation of (18)OCO by isotope ratio mass spectrometry. Nitric Oxide 2016; 55-56:25-35. [PMID: 26976364 DOI: 10.1016/j.niox.2016.03.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 03/06/2016] [Accepted: 03/09/2016] [Indexed: 11/19/2022]
Abstract
Inorganic nitrite (NO2(-), ON-O(-) ←→ (-)O-NO) is the autoxidation product of nitric oxide (NO). Nitrite can also be formed from inorganic nitrate (ONO2(-)), the major oxidation product of NO in erythrocytes, by the catalytic action of bacterial nitrate reductase in gut and oral microflora. Nitrite can be reduced to NO by certain cellular proteins and enzymes, as well as in the gastric juice under acidic conditions. Hemoglobin, xanthine oxidoreductase and carbonic anhydrase (CA) have been reported to convert nitrite to NO. Renal CA isoforms are involved in the reabsorption of nitrite and may, therefore, play an important role in NO homeostasis. Yet, the mechanisms underlying the action of CA on nitrite are incompletely understood. The nitrate/nitrite system is regarded as a reservoir of NO. We have recently shown that nitrite reacts chemically with carbon dioxide (CO2), the regular substrate of CA. The present communication reports a stable isotope ratio mass spectrometry (IRMS) study on the reaction of NO2(-) and CO2 performed in 50 mM HEPES buffer of pH 7.4 at 37 °C. By using (18)O-labelled nitrite ((18)ON-O(-)/(-18)O-NO) and CO2 we observed formation of (18)O-labelled CO2. This finding is an unequivocal evidence of the chemical reaction of (18)ON-O(-)/(-18)O-NO with CO2. The reaction is rapid and involves nucleophilic attack of the negatively charged nitrite via one of its oxygen atoms on the partially positively charged CO2 molecule to form the putative intermediate (18)ON-O-CO2(-)/(-)O2C-(18)O-NO. The by far largest fraction of this intermediate decomposes back to (18)ON-O(-)/(-18)O-NO and CO2. A very small fraction of the intermediate, however, rearranges and finally decomposes to form (18)OCO and nitrite. This reaction is slower in the presence of an isolated erythrocytic CA isoform II. In summary, NO2(-), CO2 and CA are ubiquitous. The chemical reaction of NO2(-) with CO2 and its modulation by CA isoforms may play important roles in the transport of nitrite in red blood cells, the kidney and other cells and organs.
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Affiliation(s)
- Dimitrios Tsikas
- Centre of Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
| | - Anke Böhmer
- Centre of Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Gerolf Gros
- Institute of Neurophysiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Volker Endeward
- Institute of Neurophysiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
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25
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Baldim V, Ismail A, Taladriz-Blanco P, Griveau S, de Oliveira MG, Bedioui F. Amperometric Quantification of S-Nitrosoglutathione Using Gold Nanoparticles: A Step toward Determination of S-Nitrosothiols in Plasma. Anal Chem 2016; 88:3115-20. [DOI: 10.1021/acs.analchem.5b04035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Victor Baldim
- Institute
of Chemistry, University of Campinas, UNICAMP, Campinas, São
Paulo, 13083-970, Brazil
- Chimie ParisTech,
PSL Research University, Unité de Technologies Chimiques et
Biologiques pour la Santé (UTCBS), 75005 Paris, France
- INSERM, UTCBS, 75005, Paris, France
- CNRS, UTCBS UMR
8258, 75005 Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, UTCBS, 75006 Paris, France
| | - Abdulghani Ismail
- Chimie ParisTech,
PSL Research University, Unité de Technologies Chimiques et
Biologiques pour la Santé (UTCBS), 75005 Paris, France
- INSERM, UTCBS, 75005, Paris, France
- CNRS, UTCBS UMR
8258, 75005 Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, UTCBS, 75006 Paris, France
| | | | - Sophie Griveau
- Chimie ParisTech,
PSL Research University, Unité de Technologies Chimiques et
Biologiques pour la Santé (UTCBS), 75005 Paris, France
- INSERM, UTCBS, 75005, Paris, France
- CNRS, UTCBS UMR
8258, 75005 Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, UTCBS, 75006 Paris, France
| | | | - Fethi Bedioui
- Chimie ParisTech,
PSL Research University, Unité de Technologies Chimiques et
Biologiques pour la Santé (UTCBS), 75005 Paris, France
- INSERM, UTCBS, 75005, Paris, France
- CNRS, UTCBS UMR
8258, 75005 Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, UTCBS, 75006 Paris, France
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26
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Immediate stabilization of human blood for delayed quantification of endogenous thiols and disulfides. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1019:51-8. [PMID: 26896310 DOI: 10.1016/j.jchromb.2016.02.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 02/03/2016] [Accepted: 02/05/2016] [Indexed: 01/25/2023]
Abstract
Endogenous thiols undergo rapid and reversible oxidation to disulfides when exposed to oxidants and are, therefore, suitable biomarkers of oxidative stress. However, accurate analysis of thiols in blood is frequently compromised by their artifactual oxidation during sample manipulation, which spuriously elevates the disulfide levels. Here, we describe a validated pre-analytical procedure that prevents both artifactual oxidation of thiols during sample manipulation and their oxidative decay for months in biosamples that are stored at -80°C. Addition of N-ethylmaleimide to blood samples from healthy donors was used to stabilize whole blood, red blood cells, platelets and plasma disulfides, whereas addition of citrate buffer followed by dilution of plasma with H2O was used to stabilize plasma thiols. The concentrations of thiols and disulfides were stable in all biosamples for at least 6 months when analyzed by UV/Vis HPLC at regular intervals. Only 3 ml of blood were needed to perform the analyses of thiols and disulfides in the different blood fractions. This pre-analytical procedure is reliable for use in both animal and human prospective studies. Its ease of implementation makes the method suitable for application to multicenter studies where blood samples are collected by different sites and personnel and are shipped to specific specialized laboratories.
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27
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Liu T, Schroeder HJ, Wilson SM, Terry MH, Romero M, Longo LD, Power GG, Blood AB. Local and systemic vasodilatory effects of low molecular weight S-nitrosothiols. Free Radic Biol Med 2016; 91:215-23. [PMID: 26686469 PMCID: PMC4761500 DOI: 10.1016/j.freeradbiomed.2015.12.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 10/02/2015] [Accepted: 12/10/2015] [Indexed: 12/21/2022]
Abstract
S-nitrosothiols (SNOs) such as S-nitroso-L-cysteine (L-cysNO) are endogenous compounds with potent vasodilatory activity. During circulation in the blood, the NO moiety can be exchanged among various thiol-containing compounds by S-transnitrosylation, resulting in SNOs with differing capacities to enter the cell (membrane permeability). To determine whether the vasodilating potency of SNOs is dependent upon membrane permeability, membrane-permeable L-cysNO and impermeable S-nitroso-D-cysteine (D-cysNO) and S-nitroso-glutathione (GSNO) were infused into one femoral artery of anesthetized adult sheep while measuring bilateral femoral and systemic vascular conductances. L-cysNO induced vasodilation in the infused hind limb, whereas D-cysNO and GSNO did not. L-cysNO also increased intracellular NO in isolated arterial smooth muscle cells, whereas GSNO did not. The infused SNOs remained predominantly in a low molecular weight form during first-passage through the hind limb vasculature, but were converted into high molecular weight SNOs upon systemic recirculation. At systemic concentrations of ~0.6 μmol/L, all three SNOs reduced mean arterial blood pressure by ~50%, with pronounced vasodilation in the mesenteric bed. Pharmacokinetics of L-cysNO and GSNO were measured in vitro and in vivo and correlated with their hemodynamic effects, membrane permeability, and S-transnitrosylation. These results suggest local vasodilation by SNOs in the hind limb requires membrane permeation, whereas systemic vasodilation does not. The systemic hemodynamic effects of SNOs occur after equilibration of the NO moiety amongst the plasma thiols via S-transnitrosylation.
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Affiliation(s)
- Taiming Liu
- Department of Pediatrics, Division of Neonatology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Hobe J Schroeder
- Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Sean M Wilson
- Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Michael H Terry
- Department of Respiratory Care, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Monica Romero
- Advanced Microscopy Imaging Core, Loma Linda University School of Medicine, Loma Linda, CA 92354
| | - Lawrence D Longo
- Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Gordon G Power
- Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Arlin B Blood
- Department of Pediatrics, Division of Neonatology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA.
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Lutzke A, Neufeld BH, Neufeld MJ, Reynolds MM. Nitric oxide release from a biodegradable cysteine-based polyphosphazene. J Mater Chem B 2016; 4:1987-1998. [DOI: 10.1039/c6tb00037a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
First report of nitric oxide (NO) release from a biodegradable polyphosphazene containing theS-nitrosothiol NO donor group.
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Affiliation(s)
- Alec Lutzke
- Department of Chemistry
- Colorado State University
- Fort Collins
- USA
| | | | | | - Melissa M. Reynolds
- Department of Chemistry
- Colorado State University
- Fort Collins
- USA
- School of Biomedical Engineering
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29
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Recent advances in the application of hydrophilic interaction chromatography for the analysis of biological matrices. Bioanalysis 2015; 7:2927-45. [DOI: 10.4155/bio.15.200] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Hydrophilic interaction chromatography (HILIC) is being increasingly used for the analysis of hydrophilic compounds in biological matrices. The complexity of biological samples demands adequate sample preparation procedures, specifically adjusted for HILIC analyses. Currently, most bioanalytical assays are performed on bare silica and ZIC-HILIC columns. Trends in HILIC for bioanalysis include smaller particle sizes and miniaturization of the analytical column. For complex biological samples, multidimensional techniques can separate and identify more compounds than 1D separations. The high volatility of the mobile phase, the added separation power and high sensitivity make MS the detection method of choice for bioanalysis using HILIC, although other detectors such as evaporative light scattering detection, charged aerosol detection and nuclear magnetic resonance have been reported.
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Teixeira P, Napoleão P, Saldanha C. S-nitrosoglutathione efflux in the erythrocyte. Clin Hemorheol Microcirc 2015; 60:397-404. [DOI: 10.3233/ch-141855] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Ismail A, d'Orlyé F, Griveau S, Bedioui F, Varenne A, da Silva JAF. Capillary electrophoresis coupled to contactless conductivity detection for the analysis of S-nitrosothiols decomposition and reactivity. Electrophoresis 2015; 36:1982-8. [DOI: 10.1002/elps.201500036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Revised: 04/28/2015] [Accepted: 04/28/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Abdulghani Ismail
- PSL Research University; Chimie ParisTech; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
- INSERM; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
- CNRS; Unité de Technologies Chimiques et Biologiques pour la santé UMR 8258; Paris France
- Université Paris Descartes; Sorbonne Paris Cité; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
| | - Fanny d'Orlyé
- PSL Research University; Chimie ParisTech; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
- INSERM; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
- CNRS; Unité de Technologies Chimiques et Biologiques pour la santé UMR 8258; Paris France
- Université Paris Descartes; Sorbonne Paris Cité; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
| | - Sophie Griveau
- PSL Research University; Chimie ParisTech; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
- INSERM; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
- CNRS; Unité de Technologies Chimiques et Biologiques pour la santé UMR 8258; Paris France
- Université Paris Descartes; Sorbonne Paris Cité; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
| | - Fethi Bedioui
- PSL Research University; Chimie ParisTech; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
- INSERM; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
- CNRS; Unité de Technologies Chimiques et Biologiques pour la santé UMR 8258; Paris France
- Université Paris Descartes; Sorbonne Paris Cité; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
| | - Anne Varenne
- PSL Research University; Chimie ParisTech; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
- INSERM; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
- CNRS; Unité de Technologies Chimiques et Biologiques pour la santé UMR 8258; Paris France
- Université Paris Descartes; Sorbonne Paris Cité; Unité de Technologies Chimiques et Biologiques pour la Santé; Paris France
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Hanff E, Böhmer A, Jordan J, Tsikas D. Stable-isotope dilution LC–MS/MS measurement of nitrite in human plasma after its conversion to S-nitrosoglutathione. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 970:44-52. [DOI: 10.1016/j.jchromb.2014.08.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 08/22/2014] [Accepted: 08/29/2014] [Indexed: 12/21/2022]
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Recent advances in hydrophilic interaction chromatography for quantitative analysis of endogenous and pharmaceutical compounds in plasma samples. Bioanalysis 2014; 6:2421-39. [DOI: 10.4155/bio.14.173] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
There is an increasing need for new analytical methods that can handle a large number of analytes in complex matrices. Hydrophilic interaction chromatography (HILIC) has recently been demonstrated as an important supplement to reversed-phase liquid chromatography for polar analytes, particularly endogenous compounds. With the increasing popularity of HILIC, progressively more polar phases with diverse functional groups have been developed. In addition, the coupling of HILIC to mass spectrometry offers the advantages of improved sensitivity by employing an organic-rich mobile phase. This article reviews recent applications of HILIC for the analysis of endogenous and pharmaceutical compounds in plasma samples. Furthermore, based on recent studies, we provide a discussion of column selection, sample pretreatment for HILIC analysis, and detection sensitivity.
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[ureido-15N]Citrulline UPLC–MS/MS nitric oxide synthase (NOS) activity assay: Development, validation, and applications to assess NOS uncoupling and human platelets NOS activity. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 965:173-82. [DOI: 10.1016/j.jchromb.2014.06.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 06/17/2014] [Accepted: 06/22/2014] [Indexed: 11/23/2022]
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Functional roles of protein nitration in acute and chronic liver diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2014; 2014:149627. [PMID: 24876909 PMCID: PMC4021747 DOI: 10.1155/2014/149627] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 04/01/2014] [Accepted: 04/04/2014] [Indexed: 02/06/2023]
Abstract
Nitric oxide, when combined with superoxide, produces peroxynitrite, which is known to be an important mediator for a number of diseases including various liver diseases. Peroxynitrite can modify tyrosine residue(s) of many proteins resulting in protein nitration, which may alter structure and function of each target protein. Various proteomics and immunological methods including mass spectrometry combined with both high pressure liquid chromatography and 2D PAGE have been employed to identify and characterize nitrated proteins from pathological tissue samples to determine their roles. However, these methods contain a few technical problems such as low efficiencies with the detection of a limited number of nitrated proteins and labor intensiveness. Therefore, a systematic approach to efficiently identify nitrated proteins and characterize their functional roles is likely to shed new insights into understanding of the mechanisms of hepatic disease pathophysiology and subsequent development of new therapeutics. The aims of this review are to briefly describe the mechanisms of hepatic diseases. In addition, we specifically describe a systematic approach to efficiently identify nitrated proteins to study their causal roles or functional consequences in promoting acute and chronic liver diseases including alcoholic and nonalcoholic fatty liver diseases. We finally discuss translational research applications by analyzing nitrated proteins in evaluating the efficacies of potentially beneficial agents to prevent or treat various diseases in the liver and other tissues.
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Tsikas D, Böhmer A, Mitschke A, Araujo P. Accurate measurement of nitrate, nitrite, and S-nitrosothiols in biological samples by mass spectrometry. Free Radic Biol Med 2013; 65:301-304. [PMID: 23867157 DOI: 10.1016/j.freeradbiomed.2013.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 07/03/2013] [Accepted: 07/08/2013] [Indexed: 11/18/2022]
Affiliation(s)
- Dimitrios Tsikas
- Institute of Clinical Pharmacology, Hannover Medical School, 30625 Hannover, Germany.
| | - Anke Böhmer
- Institute of Clinical Pharmacology, Hannover Medical School, 30625 Hannover, Germany
| | - Anja Mitschke
- Institute of Clinical Pharmacology, Hannover Medical School, 30625 Hannover, Germany
| | - Pedro Araujo
- National Institute of Nutrition and Seafood Research, N-5817 Bergen, Norway
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