101
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Matsubara R, Ando A, Hayashi M. Synthesis of cyanofuroxans from 4-nitrofuroxans via C C bond forming reactions. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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102
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Cobley JN, Close GL, Bailey DM, Davison GW. Exercise redox biochemistry: Conceptual, methodological and technical recommendations. Redox Biol 2017; 12:540-548. [PMID: 28371751 PMCID: PMC5377294 DOI: 10.1016/j.redox.2017.03.022] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 03/23/2017] [Accepted: 03/24/2017] [Indexed: 12/16/2022] Open
Abstract
Exercise redox biochemistry is of considerable interest owing to its translational value in health and disease. However, unaddressed conceptual, methodological and technical issues complicate attempts to unravel how exercise alters redox homeostasis in health and disease. Conceptual issues relate to misunderstandings that arise when the chemical heterogeneity of redox biology is disregarded: which often complicates attempts to use redox-active compounds and assess redox signalling. Further, that oxidised macromolecule adduct levels reflect formation and repair is seldom considered. Methodological and technical issues relate to the use of out-dated assays and/or inappropriate sample preparation techniques that confound biochemical redox analysis. After considering each of the aforementioned issues, we outline how each issue can be resolved and provide a unifying set of recommendations. We specifically recommend that investigators: consider chemical heterogeneity, use redox-active compounds judiciously, abandon flawed assays, carefully prepare samples and assay buffers, consider repair/metabolism, use multiple biomarkers to assess oxidative damage and redox signalling.
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Affiliation(s)
- James N Cobley
- Department for Sport and Exercise Sciences, Abertay University, 40 Bell Street, Dundee, Scotland DD1 1HG, UK.
| | - Graeme L Close
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Tom Reilly Building, Liverpool, England L3 3AF, UK
| | - Damian M Bailey
- Neurovascular Research Laboratory, Faculty of Life Sciences and Education, University of South Wales, Wales, CF37 4AT, UK; Faculty of Medicine, Reichwald Health Sciences Centre, University of British Columbia-Okanagan, Kelowna, British Columbia, Canada
| | - Gareth W Davison
- Sport and Exercise Science Research Institute, Ulster University, Belfast, BT37 OQB, UK
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103
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Tengan CH, Moraes CT. NO control of mitochondrial function in normal and transformed cells. BIOCHIMICA ET BIOPHYSICA ACTA. BIOENERGETICS 2017; 1858:573-581. [PMID: 28216426 PMCID: PMC5487294 DOI: 10.1016/j.bbabio.2017.02.009] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 01/19/2017] [Accepted: 02/15/2017] [Indexed: 10/25/2022]
Abstract
Nitric oxide (NO) is a signaling molecule with multiple facets and involved in numerous pathological process, including cancer. Among the different pathways where NO has a functionally relevant participation, is the control of mitochondrial respiration and biogenesis. NO is able to inhibit the electron transport chain, mainly at Complex IV, regulating oxygen consumption and ATP generation, but at the same time, can also induce increase in reactive oxygen and nitrogen species. The presence of reactive species can induce oxidative damage or participate in redox signaling. In this review, we discuss how NO affects mitochondrial respiration and mitochondrial biogenesis, and how it influences the development of mitochondrial deficiency and cancer. This article is part of a Special Issue entitled Mitochondria in Cancer, edited by Giuseppe Gasparre, Rodrigue Rossignol and Pierre Sonveaux.
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Affiliation(s)
- Celia H Tengan
- Department of Neurology and Neurosurgery, Escola Paulista de Medicina, Universidade Federal de São Paulo, R. Pedro de Toledo, 781, setimo andar, frente, 04039-032, São Paulo, SP, Brazil.
| | - Carlos T Moraes
- University of Miami Miller School of Medicine, Dept. of Neurology and Cell Biology, 1420 NW 9th Avenue, Rm.229, Miami, FL 33136, USA.
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104
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Brienza M, Duwig C, Pérez S, Chiron S. 4-nitroso-sulfamethoxazole generation in soil under denitrifying conditions: Field observations versus laboratory results. JOURNAL OF HAZARDOUS MATERIALS 2017; 334:185-192. [PMID: 28412628 DOI: 10.1016/j.jhazmat.2017.04.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 06/07/2023]
Abstract
The formation of 4-nitroso-sulfamethoxazole and 4-nitro-SMX, two transformation products (TPs) of sulfamethoxazole (SMX) was investigated under batch soil slurry experiments and in a field study. Due to their low occurrence levels (ng/L) in environmental waters, a suitable analytical method based on liquid chromatography - high resolution - mass spectrometry was developed. Consequently, field observations revealed, for the first time, the occurrence of 4-nitroso-SMX in groundwater at concentrations as high as 18ng/L.Nitric oxide (NO) steady-state concentrations were determined in soil slurry experiments because this reactive specie accounted for the formation of 4-nitroso-SMX and 4-nitro-SMX. Measurements revealed that environmental SMX concentrations (0.2-2μg/L) at neutral pH induced the accumulation of nitric oxide. Under acidic conditions (pH<6), nitrous acid (HONO) was the major source of nitric oxide while under neutral/basic conditions nitric oxide release was related to the inhibition of denitrification processes. Under laboratory experiments, SMX nitration reaction appeared to be an irreversible transformation pathway, while 4-nitroso-SMX was slowly transformed over time. The occurrence of 4-nitroso-SMX conditions was therefore unexpected in the field study but could be due to its continuous input from soil and/or its relative persistence under anoxic conditions. A mechanism for 4-nitroso-SMX formation was proposed involving a nitrosative desamination pathway through a phenyl radical.
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Affiliation(s)
- Monica Brienza
- UMR HydroSciences 5569, IRD, Montpellier University, 15 Avenue Ch. Flahault, 34093 Montpellier Cedex 5, France
| | - Céline Duwig
- UMR LTHE 5564, IRD, Grenoble University, 70, rue de la physique - Domaine Universitaire, 38041 Grenoble Cedex 9, France
| | - Sandra Pérez
- Water and Soil Quality Research Group, IDAEA-CSIC, c/Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Serge Chiron
- UMR HydroSciences 5569, IRD, Montpellier University, 15 Avenue Ch. Flahault, 34093 Montpellier Cedex 5, France.
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105
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Analysis of reactive oxygen and nitrogen species generated in three liquid media by low temperature helium plasma jet. Sci Rep 2017; 7:4562. [PMID: 28676723 PMCID: PMC5496897 DOI: 10.1038/s41598-017-04650-4] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 05/18/2017] [Indexed: 02/03/2023] Open
Abstract
In order to identify aqueous species formed in Plasma activated media (PAM), quantitative investigations of reactive oxygen and nitrogen species (ROS, RNS) were performed and compared to Milli-Q water and culture media without and with Fetal Calf Serum. Electron paramagnetic resonance, fluorometric and colorimetric analysis were used to identify and quantify free radicals generated by helium plasma jet in these liquids. Results clearly show the formation of ROS such as hydroxyl radical, superoxide anion radical and singlet oxygen in order of the micromolar range of concentrations. Nitric oxide, hydrogen peroxide and nitrite-nitrate anions (in range of several hundred micromolars) are the major species observed in PAM. The composition of the medium has a major impact on the pH of the solution during plasma treatment, on the stability of the different RONS that are produced and on their reactivity with biomolecules. To emphasize the interactions of plasma with a complex medium, amino acid degradation by means of mass spectrometry was also investigated using methionine, tyrosine, tryptophan and arginine. All of these components such as long lifetime RONS and oxidized biological compounds may contribute to the cytotoxic effect of PAM. This study provides mechanistic insights into the mechanisms involved in cell death after treatment with PAM.
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106
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Mogen AB, Carroll RK, James KL, Lima G, Silva D, Culver JA, Petucci C, Shaw LN, Rice KC. Staphylococcus aureus nitric oxide synthase (saNOS) modulates aerobic respiratory metabolism and cell physiology. Mol Microbiol 2017; 105:139-157. [PMID: 28431199 PMCID: PMC5641370 DOI: 10.1111/mmi.13693] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/10/2017] [Indexed: 12/11/2022]
Abstract
Nitric oxide (NO) is generated from arginine and oxygen via NO synthase (NOS). Staphylococcus aureus NOS (saNOS) has previously been shown to affect virulence and resistance to exogenous oxidative stress, yet the exact mechanism is unknown. Herein, a previously undescribed role of saNOS in S. aureus aerobic physiology was reported. Specifically, aerobic S. aureus nos mutant cultures presented with elevated endogenous reactive oxygen species (ROS) and superoxide levels, as well as increased membrane potential, increased respiratory dehydrogenase activity and slightly elevated oxygen consumption. Elevated ROS levels in the nos mutant likely resulted from altered respiratory function, as inhibition of NADH dehydrogenase brought ROS levels back to wild-type levels. These results indicate that, in addition to its recently reported role in regulating the switch to nitrate-based respiration during low-oxygen growth, saNOS also plays a modulatory role during aerobic respiration. Multiple transcriptional changes were also observed in the nos mutant, including elevated expression of genes associated with oxidative/nitrosative stress, anaerobic respiration and lactate metabolism. Targeted metabolomics revealed decreased cellular lactate levels, and altered levels of TCA cycle intermediates, the latter of which may be related to decreased aconitase activity. Collectively, these findings demonstrate a key contribution of saNOS to S. aureus aerobic respiratory metabolism.
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Affiliation(s)
- Austin B. Mogen
- Department of Microbiology and Cell Science, IFAS, University of Florida, Gainesville, FL, 32611-0700
| | - Ronan K. Carroll
- Department of Biological Sciences, Ohio University, Athens, Ohio, 45701
| | - Kimberly L. James
- Department of Microbiology and Cell Science, IFAS, University of Florida, Gainesville, FL, 32611-0700
| | - Genevy Lima
- Department of Microbiology and Cell Science, IFAS, University of Florida, Gainesville, FL, 32611-0700
| | - Dona Silva
- Department of Microbiology and Cell Science, IFAS, University of Florida, Gainesville, FL, 32611-0700
| | - Jeffrey A. Culver
- Metabolomics Core, Sanford Burnham Prebys Medical Discovery Institute, Orlando, FL, 32827
- Southeast Center for Integrated Metabolomics, University of Florida, Gainesville, FL, 32611
| | - Christopher Petucci
- Metabolomics Core, Sanford Burnham Prebys Medical Discovery Institute, Orlando, FL, 32827
- Southeast Center for Integrated Metabolomics, University of Florida, Gainesville, FL, 32611
| | - Lindsey N. Shaw
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL, 33620-5150
| | - Kelly C. Rice
- Department of Microbiology and Cell Science, IFAS, University of Florida, Gainesville, FL, 32611-0700
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107
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Orenha RP, Rocha MVJ, Poater J, Galembeck SE, Bickelhaupt FM. Nature of the Ru-NO Coordination Bond: Kohn-Sham Molecular Orbital and Energy Decomposition Analysis. ChemistryOpen 2017; 6:410-416. [PMID: 28638774 PMCID: PMC5474663 DOI: 10.1002/open.201700028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Indexed: 11/13/2022] Open
Abstract
We have analyzed structure, stability, and Ru-NO bonding of the trans-[RuCl(NO)(NH3)4]2+ complex by using relativistic density functional theory. First, we focus on the bond dissociation energies associated with the three canonical dissociation modes leading to [RuCl(NH3)4]++NO+, [RuCl(NH3)4]2++NO, and [RuCl(NH3)4]3++NO-. The main objective is to understand the Ru-NO+ bonding mechanism in the conceptual framework of Kohn-Sham molecular orbital theory in combination with a quantitative energy decomposition analysis. In our analyses, we have addressed the importance of the synergism between Ru-NO+ σ-donation and π-backdonation as well as the so-called negative trans influence of the Cl- ligand on the Ru-NO bond. For completeness, the Ru-NO+ bonding mechanism is compared with that of the corresponding Ru-CO bond.
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Affiliation(s)
- Renato P. Orenha
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, USPRibeirão Preto-SP14040-901Brazil
- Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081HVAmsterdamThe Netherlands
| | - Marcus V. J. Rocha
- Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081HVAmsterdamThe Netherlands
- Fluminense Federal UniversityInstitute of Chemistry—Department of Physical Chemistry, Outeiro de São João Baptista24020-141NiteroiRio de JaneiroBrazil
| | - Jordi Poater
- ICREAPg. Lluís Companys 2308010Barcelona (Spain
- Departament de Química Inorgànica i Orgànica & IQTCUBUniversitat de Barcelona08028BarcelonaCataloniaSpain
| | - Sérgio E. Galembeck
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, USPRibeirão Preto-SP14040-901Brazil
| | - F. Matthias Bickelhaupt
- Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081HVAmsterdamThe Netherlands
- Institute for Molecules and MaterialsRadboud UniversityHeyendaalseweg 1356525AJNijmegenThe Netherlands
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108
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Jankovic A, Korac A, Buzadzic B, Stancic A, Otasevic V, Ferdinandy P, Daiber A, Korac B. Targeting the NO/superoxide ratio in adipose tissue: relevance to obesity and diabetes management. Br J Pharmacol 2017; 174:1570-1590. [PMID: 27079449 PMCID: PMC5446578 DOI: 10.1111/bph.13498] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/31/2016] [Accepted: 04/04/2016] [Indexed: 12/21/2022] Open
Abstract
Insulin sensitivity and metabolic homeostasis depend on the capacity of adipose tissue to take up and utilize excess glucose and fatty acids. The key aspects that determine the fuel-buffering capacity of adipose tissue depend on the physiological levels of the small redox molecule, nitric oxide (NO). In addition to impairment of NO synthesis, excessive formation of the superoxide anion (О2•- ) in adipose tissue may be an important interfering factor diverting the signalling of NO and other reactive oxygen and nitrogen species in obesity, resulting in metabolic dysfunction of adipose tissue over time. Besides its role in relief from superoxide burst, enhanced NO signalling may be responsible for the therapeutic benefits of different superoxide dismutase mimetics, in obesity and experimental diabetes models. This review summarizes the role of NO in adipose tissue and highlights the effects of NO/О2•- ratio 'teetering' as a promising pharmacological target in the metabolic syndrome. LINKED ARTICLES This article is part of a themed section on Redox Biology and Oxidative Stress in Health and Disease. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.12/issuetoc.
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Affiliation(s)
- Aleksandra Jankovic
- Department of Physiology, Institute for Biological Research “Sinisa Stankovic”University of BelgradeBelgradeSerbia
| | - Aleksandra Korac
- Faculty of Biology, Center for Electron MicroscopyUniversity of BelgradeBelgradeSerbia
| | - Biljana Buzadzic
- Department of Physiology, Institute for Biological Research “Sinisa Stankovic”University of BelgradeBelgradeSerbia
| | - Ana Stancic
- Department of Physiology, Institute for Biological Research “Sinisa Stankovic”University of BelgradeBelgradeSerbia
| | - Vesna Otasevic
- Department of Physiology, Institute for Biological Research “Sinisa Stankovic”University of BelgradeBelgradeSerbia
| | - Péter Ferdinandy
- Department of Pharmacology and PharmacotherapySemmelweis UniversityBudapestHungary
- Pharmahungary GroupSzegedHungary
| | - Andreas Daiber
- Center for Cardiology ‐ Cardiology 1, Molecular CardiologyUniversity Medical CenterMainzGermany
| | - Bato Korac
- Department of Physiology, Institute for Biological Research “Sinisa Stankovic”University of BelgradeBelgradeSerbia
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109
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Can Co-Activation of Nrf2 and Neurotrophic Signaling Pathway Slow Alzheimer's Disease? Int J Mol Sci 2017; 18:ijms18061168. [PMID: 28561773 PMCID: PMC5485992 DOI: 10.3390/ijms18061168] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 05/22/2017] [Accepted: 05/27/2017] [Indexed: 12/28/2022] Open
Abstract
Alzheimer’s disease (AD) is a multifaceted disease that is hard to treat by single-modal treatment. AD starts with amyloid peptides, mitochondrial dysfunction, and oxidative stress and later is accompanied with chronic endoplasmic reticulum (ER) stress and autophagy dysfunction, resulting in more complicated pathogenesis. Currently, few treatments can modify the complicated pathogenic progress of AD. Compared to the treatment with exogenous antioxidants, the activation of global antioxidant defense system via Nrf2 looks more promising in attenuating oxidative stress in AD brains. Accompanying the activation of the Nrf2-mediated antioxidant defense system that reduce the AD-causative factor, oxidative stress, it is also necessary to activate the neurotrophic signaling pathway that replaces damaged organelles and molecules with new ones. Thus, the dual actions to activate both the Nrf2 antioxidant system and neurotrophic signaling pathway are expected to provide a better strategy to modify AD pathogenesis. Here, we review the current understanding of AD pathogenesis and neuronal defense systems and discuss a possible way to co-activate the Nrf2 antioxidant system and neurotrophic signaling pathway with the hope of helping to find a better strategy to slow AD.
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110
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Fancy NN, Bahlmann AK, Loake GJ. Nitric oxide function in plant abiotic stress. PLANT, CELL & ENVIRONMENT 2017; 40:462-472. [PMID: 26754426 DOI: 10.1111/pce.12707] [Citation(s) in RCA: 209] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/09/2015] [Accepted: 12/26/2015] [Indexed: 05/17/2023]
Abstract
Abiotic stress is one of the main threats affecting crop growth and production. An understanding of the molecular mechanisms that underpin plant responses against environmental insults will be crucial to help guide the rational design of crop plants to counter these challenges. A key feature during abiotic stress is the production of nitric oxide (NO), an important concentration dependent, redox-related signalling molecule. NO can directly or indirectly interact with a wide range of targets leading to the modulation of protein function and the reprogramming of gene expression. The transfer of NO bioactivity can occur through a variety of potential mechanisms but chief among these is S-nitrosylation, a prototypic, redox-based, post-translational modification. However, little is known about this pivotal molecular amendment in the regulation of abiotic stress signalling. Here, we describe the emerging knowledge concerning the function of NO and S-nitrosylation during plant responses to abiotic stress.
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Affiliation(s)
- Nurun Nahar Fancy
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, The King's Buildings, Edinburgh, UK, EH9 3BF
| | - Ann-Kathrin Bahlmann
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, The King's Buildings, Edinburgh, UK, EH9 3BF
- Technische Universität Braunschweig, Braunschweig, D-38106, Germany
| | - Gary J Loake
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, The King's Buildings, Edinburgh, UK, EH9 3BF
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111
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Maiocchi SL, Morris JC, Rees MD, Thomas SR. Regulation of the nitric oxide oxidase activity of myeloperoxidase by pharmacological agents. Biochem Pharmacol 2017; 135:90-115. [PMID: 28344126 DOI: 10.1016/j.bcp.2017.03.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/22/2017] [Indexed: 01/10/2023]
Abstract
The leukocyte-derived heme enzyme myeloperoxidase (MPO) is released extracellularly during inflammation and impairs nitric oxide (NO) bioavailability by directly oxidizing NO or producing NO-consuming substrate radicals. Here, structurally diverse pharmacological agents with activities as MPO substrates/inhibitors or antioxidants were screened for their effects on MPO NO oxidase activity in human plasma and physiological model systems containing endogenous MPO substrates/antioxidants (tyrosine, urate, ascorbate). Hydrazide-based irreversible/reversible MPO inhibitors (4-ABAH, isoniazid) or the sickle cell anaemia drug, hydroxyurea, all promoted MPO NO oxidase activity. This involved the capacity of NO to antagonize MPO inhibition by hydrazide-derived radicals and/or the ability of drug-derived radicals to stimulate MPO turnover thereby increasing NO consumption by MPO redox intermediates or NO-consuming radicals. In contrast, the mechanism-based irreversible MPO inhibitor 2-thioxanthine, potently inhibited MPO turnover and NO consumption. Although the phenolics acetaminophen and resveratrol initially increased MPO turnover and NO consumption, they limited the overall extent of NO loss by rapidly depleting H2O2 and promoting the formation of ascorbyl radicals, which inefficiently consume NO. The vitamin E analogue trolox inhibited MPO NO oxidase activity in ascorbate-depleted fluids by scavenging NO-consuming tyrosyl and urate radicals. Tempol and related nitroxides decreased NO consumption in ascorbate-replete fluids by scavenging MPO-derived ascorbyl radicals. Indoles or apocynin yielded marginal effects. Kinetic analyses rationalized differences in drug activities and identified criteria for the improved inhibition of MPO NO oxidase activity. This study reveals that widely used agents have important implications for MPO NO oxidase activity under physiological conditions, highlighting new pharmacological strategies for preserving NO bioavailability during inflammation.
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Affiliation(s)
- Sophie L Maiocchi
- Mechanisms of Disease & Translational Research, Department of Pathology, School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia; School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Jonathan C Morris
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Martin D Rees
- Mechanisms of Disease & Translational Research, Department of Pathology, School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Shane R Thomas
- Mechanisms of Disease & Translational Research, Department of Pathology, School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia.
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112
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Orenha RP, Santiago RT, Haiduke RLA, Galembeck SE. How computational methods and relativistic effects influence the study of chemical reactions involving Ru-NO complexes? J Comput Chem 2017; 38:883-891. [DOI: 10.1002/jcc.24762] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 12/21/2016] [Accepted: 01/30/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Renato Pereira Orenha
- Departamento de Química; FFCLRP, Universidade de São Paulo; Ribeirão Preto SP 14040-901 Brazil
| | - Régis Tadeu Santiago
- Departamento de Química e Física Molecular; Instituto de Química de São Carlos, Universidade de São Paulo; Av. Trabalhador São-carlense, 400-CP 780 São Carlos SP 13560-970 Brazil
| | - Roberto Luiz Andrade Haiduke
- Departamento de Química e Física Molecular; Instituto de Química de São Carlos, Universidade de São Paulo; Av. Trabalhador São-carlense, 400-CP 780 São Carlos SP 13560-970 Brazil
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113
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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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114
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Elliott J, Duay J, Simoska O, Shear JB, Stevenson KJ. Gold Nanoparticle Modified Transparent Carbon Ultramicroelectrode Arrays for the Selective and Sensitive Electroanalytical Detection of Nitric Oxide. Anal Chem 2017; 89:1267-1274. [DOI: 10.1021/acs.analchem.6b03987] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Janine Elliott
- Department
of Chemistry, Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jonathon Duay
- Department
of Chemistry, Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Olja Simoska
- Department
of Chemistry, Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jason B. Shear
- Department
of Chemistry, Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Keith J. Stevenson
- Center
for Electrochemical Energy Storage, Skolkovo Institute of Science and Technology, Moscow 143026, Russia
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115
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Yu C, Peng RY. Biological effects and mechanisms of shortwave radiation: a review. Mil Med Res 2017; 4:24. [PMID: 28729909 PMCID: PMC5518414 DOI: 10.1186/s40779-017-0133-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Accepted: 07/14/2017] [Indexed: 11/10/2022] Open
Abstract
With the increasing knowledge of shortwave radiation, it is widely used in wireless communications, radar observations, industrial manufacturing, and medical treatments. Despite of the benefits from shortwave, these wide applications expose humans to the risk of shortwave electromagnetic radiation, which is alleged to cause potential damage to biological systems. This review focused on the exposure to shortwave electromagnetic radiation, considering in vitro, in vivo and epidemiological results that have provided insight into the biological effects and mechanisms of shortwave. Additionally, some protective measures and suggestions are discussed here in the hope of obtaining more benefits from shortwave with fewer health risks.
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Affiliation(s)
- Chao Yu
- Beijing Institute of Radiation Medicine, Beijing, 100850 China
| | - Rui-Yun Peng
- Beijing Institute of Radiation Medicine, Beijing, 100850 China
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116
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Liu C, Wang Y, Tang C, Liu F, Ma Z, Zhao Q, Wang Z, Zhu B, Zhang X. A reductant-resistant ratiometric, colorimetric and far-red fluorescent probe for rapid and ultrasensitive detection of nitroxyl. J Mater Chem B 2017; 5:3557-3564. [DOI: 10.1039/c6tb03359h] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A reductant-resistant ratiometric, colorimetric and far-red fluorescent probe for rapid and ultrasensitive detection of nitroxyl was developed.
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Affiliation(s)
- Caiyun Liu
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Yawei Wang
- School of Resources and Environment
- University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
- Jinan 250022
- China
| | - Chengcheng Tang
- School of Resources and Environment
- University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
- Jinan 250022
- China
| | - Fang Liu
- School of Resources and Environment
- University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
- Jinan 250022
- China
| | - Zhenmin Ma
- School of Resources and Environment
- University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
- Jinan 250022
- China
| | - Qiang Zhao
- School of Resources and Environment
- University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
- Jinan 250022
- China
| | - Zhongpeng Wang
- School of Resources and Environment
- University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
- Jinan 250022
- China
| | - Baocun Zhu
- School of Resources and Environment
- University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
- Jinan 250022
- China
| | - Xiaoling Zhang
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry
- Beijing Institute of Technology
- Beijing 100081
- China
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117
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Loas A, Lippard SJ. Direct ratiometric detection of nitric oxide with Cu(ii)-based fluorescent probes. J Mater Chem B 2017; 5:8929-8933. [DOI: 10.1039/c7tb02666h] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We report the first Cu(ii)-based ratiometric sensors for direct, rapid, and selective fluorescent detection of nitric oxide.
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Affiliation(s)
- A. Loas
- Department of Chemistry
- Massachusetts Institute of Technology
- Cambridge
- USA
| | - S. J. Lippard
- Department of Chemistry
- Massachusetts Institute of Technology
- Cambridge
- USA
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118
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Brent J, Burkhart K, Dargan P, Hatten B, Megarbane B, Palmer R, White J. Adverse Drug Reactions in the Intensive Care Unit. CRITICAL CARE TOXICOLOGY 2017. [PMCID: PMC7153447 DOI: 10.1007/978-3-319-17900-1_33] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Adverse drug reactions (ADRs) are undesirable effects of medications used in normal doses [1]. ADRs can occur during treatment in an intensive care unit (ICU) or result in ICU admissions. A meta-analysis of 4139 studies suggests the incidence of ADRs among hospitalized patients is 17% [2]. Because of underreporting and misdiagnosis, the incidence of ADRs may be much higher and has been reported to be as high as 36% [3]. Critically ill patients are at especially high risk because of medical complexity, numerous high-alert medications, complex and often challenging drug dosing and medication regimens, and opportunity for error related to the distractions of the ICU environment [4]. Table 1 summarizes the ADRs included in this chapter.
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Affiliation(s)
- Jeffrey Brent
- Department of Medicine, Division of Clinical Pharmacology and Toxicology, University of Colorado, School of Medicine, Aurora, Colorado USA
| | - Keith Burkhart
- FDA, Office of New Drugs/Immediate Office, Center for Drug Evaluation and Research, Silver Spring, Maryland USA
| | - Paul Dargan
- Clinical Toxicology, St Thomas’ Hospital, Silver Spring, Maryland USA
| | - Benjamin Hatten
- Toxicology Associates, University of Colorado, School of Medicine, Denver, Colorado USA
| | - Bruno Megarbane
- Medical Toxicological Intensive Care Unit, Lariboisiere Hospital, Paris-Diderot University, Paris, France
| | - Robert Palmer
- Toxicology Associates, University of Colorado, School of Medicine, Denver, Colorado USA
| | - Julian White
- Toxinology Department, Women’s and Children’s Hospital, North Adelaide, South Australia Australia
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119
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Kostin GA, Mikhailov AA, Kuratieva NV, Pischur DP, Zharkov DO, Grin IR. Influence of pyridine-like ligands on the structure, photochemical and biological properties of nitro-nitrosyl ruthenium complexes. NEW J CHEM 2017. [DOI: 10.1039/c7nj01602f] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The photochemical properties and cell toxicity of monomeric and dimeric complexes of RuNO with methyl substituted pyridines and NO2were investigated.
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Affiliation(s)
- G. A. Kostin
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk 630090
- Russia
- Novosibirsk State University
- Novosibirsk 630090
| | - A. A. Mikhailov
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk 630090
- Russia
- Novosibirsk State University
- Novosibirsk 630090
| | - N. V. Kuratieva
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk 630090
- Russia
- Novosibirsk State University
- Novosibirsk 630090
| | - D. P. Pischur
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk 630090
- Russia
| | - D. O. Zharkov
- Novosibirsk State University
- Novosibirsk 630090
- Russia
- Institute of Chemical Biology and Fundamental Medicine SB RAS
- Novosibirsk 630090
| | - I. R. Grin
- Novosibirsk State University
- Novosibirsk 630090
- Russia
- Institute of Chemical Biology and Fundamental Medicine SB RAS
- Novosibirsk 630090
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120
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Detection of Nitric Oxide by Electron Paramagnetic Resonance Spectroscopy: Spin-Trapping with Iron-Dithiocarbamates. Methods Mol Biol 2016; 1424:81-102. [PMID: 27094413 DOI: 10.1007/978-1-4939-3600-7_8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Electron paramagnetic resonance (EPR) spectroscopy is the ideal methodology to identify radicals (detection and characterization of molecular structure) and to study their kinetics, in both simple and complex biological systems. The very low concentration and short life-time of NO and of many other radicals do not favor its direct detection and spin-traps are needed to produce a new and persistent radical that can be subsequently detected by EPR spectroscopy.In this chapter, we present the basic concepts of EPR spectroscopy and of some spin-trapping methodologies to study NO. The "strengths and weaknesses" of iron-dithiocarbamates utilization, the NO traps of choice for the authors, are thoroughly discussed and a detailed description of the method to quantify the NO formation by molybdoenzymes is provided.
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121
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Chou WK, Brynildsen MP. A biochemical engineering view of the quest for immune-potentiating anti-infectives. Curr Opin Chem Eng 2016. [DOI: 10.1016/j.coche.2016.08.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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122
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Genovese S, Fiorito S, Taddeo VA, Epifano F, Paciotti R, Coletti C, Franceschelli S, Speranza L, Ferrone A, Felaco M, Patruno A. Effects of Geranyloxycinnamic Acids on COX-2 and i
NOS Functionalities in LPS-Stimulated U937 Mononuclear Cells. ChemistrySelect 2016. [DOI: 10.1002/slct.201601091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Salvatore Genovese
- Department of Pharmacy; University “G. d'Annunzio” of Chieti-Pescara; Via dei Vestini 31 66100 Chieti Scalo (CH) Italy
| | - Serena Fiorito
- Department of Pharmacy; University “G. d'Annunzio” of Chieti-Pescara; Via dei Vestini 31 66100 Chieti Scalo (CH) Italy
| | - Vito Alessandro Taddeo
- Department of Pharmacy; University “G. d'Annunzio” of Chieti-Pescara; Via dei Vestini 31 66100 Chieti Scalo (CH) Italy
| | - Francesco Epifano
- Department of Pharmacy; University “G. d'Annunzio” of Chieti-Pescara; Via dei Vestini 31 66100 Chieti Scalo (CH) Italy
| | - Roberto Paciotti
- Department of Pharmacy; University “G. d'Annunzio” of Chieti-Pescara; Via dei Vestini 31 66100 Chieti Scalo (CH) Italy
| | - Cecilia Coletti
- Department of Pharmacy; University “G. d'Annunzio” of Chieti-Pescara; Via dei Vestini 31 66100 Chieti Scalo (CH) Italy
| | - Sara Franceschelli
- Department of Pharmacy; University “G. d'Annunzio” of Chieti-Pescara; Via dei Vestini 31 66100 Chieti Scalo (CH) Italy
| | - Lorenza Speranza
- Department of Pharmacy; University “G. d'Annunzio” of Chieti-Pescara; Via dei Vestini 31 66100 Chieti Scalo (CH) Italy
| | - Alessio Ferrone
- Department of Pharmacy; University “G. d'Annunzio” of Chieti-Pescara; Via dei Vestini 31 66100 Chieti Scalo (CH) Italy
| | - Mario Felaco
- Department of Pharmacy; University “G. d'Annunzio” of Chieti-Pescara; Via dei Vestini 31 66100 Chieti Scalo (CH) Italy
| | - Antonia Patruno
- Department of Pharmacy; University “G. d'Annunzio” of Chieti-Pescara; Via dei Vestini 31 66100 Chieti Scalo (CH) Italy
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123
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Chen K, Shi G, Zhou X, Li H, Wang C. Highly Efficient Nitric Oxide Capture by Azole-Based Ionic Liquids through Multiple-Site Absorption. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607528] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Kaihong Chen
- Department of Chemistry; ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P.R. China
| | - Guiling Shi
- Department of Chemistry; ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P.R. China
| | - Xiuyuan Zhou
- Department of Chemistry; ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P.R. China
| | - Haoran Li
- Department of Chemistry; ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P.R. China
| | - Congmin Wang
- Department of Chemistry; ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P.R. China
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education; Zhejiang University; Hangzhou 310027 P.R. China
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124
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Chen K, Shi G, Zhou X, Li H, Wang C. Highly Efficient Nitric Oxide Capture by Azole-Based Ionic Liquids through Multiple-Site Absorption. Angew Chem Int Ed Engl 2016; 55:14364-14368. [DOI: 10.1002/anie.201607528] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 09/14/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Kaihong Chen
- Department of Chemistry; ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P.R. China
| | - Guiling Shi
- Department of Chemistry; ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P.R. China
| | - Xiuyuan Zhou
- Department of Chemistry; ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P.R. China
| | - Haoran Li
- Department of Chemistry; ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P.R. China
| | - Congmin Wang
- Department of Chemistry; ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P.R. China
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education; Zhejiang University; Hangzhou 310027 P.R. China
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125
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Chiron S, Duwig C. Biotic nitrosation of diclofenac in a soil aquifer system (Katari watershed, Bolivia). THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 565:473-480. [PMID: 27183461 DOI: 10.1016/j.scitotenv.2016.05.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/04/2016] [Accepted: 05/07/2016] [Indexed: 06/05/2023]
Abstract
Up till now, the diclofenac (DCF) transformation into its nitrogen-derivatives, N-nitroso-DCF (NO-DCF) and 5-nitro-DCF (NO2-DCF), has been mainly investigated in wastewater treatment plant under nitrification or denitrification processes. This work reports, for the first time, an additional DCF microbial mediated nitrosation pathway of DCF in soil under strictly anoxic conditions probably involving codenitrification processes and fungal activities. This transformation pathway was investigated by using field observations data at a soil aquifer system (Katari watershed, Bolivia) and by carrying out soil slurry batch experiments. It was also observed for diphenylamine (DPA). Field measurements revealed the occurrence of NO-DCF, NO2-DCF and NO-DPA in groundwater samples at concentration levels in the 6-68s/L range. These concentration levels are more significant than those previously reported in wastewater treatment plant effluents taking into account dilution processes in soil. Interestingly, the p-benzoquinone imine of 5-OH-DCF was also found to be rather stable in surface water. In laboratory batch experiments under strictly anoxic conditions, the transformation of DCF and DPA into their corresponding N-nitroso derivatives was well correlated to denitrification processes. It was also observed that NO-DCF evolved into NO2-DCF while NO-DPA was stable. In vitro experiments showed that the Fisher-Hepp rearrangement could not account for NO2-DCF formation. One possible mechanism might be that NO-DCF underwent spontaneous NO loss to give the resulting intermediates diphenylaminyl radical or nitrenium cation which might evolve into NO2-DCF in presence of NO2 radical or nitrite ion, respectively.
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Affiliation(s)
- Serge Chiron
- UMR HydroSciences 5569, Montpellier University, 15 Avenue Ch. Flahault, 34093 Montpellier Cedex 5, France.
| | - Céline Duwig
- Université Grenoble Alpes, LTHE, F38000 Grenoble, France; IRD, LTHE, F38000 Grenoble, France
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126
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Sharma SK, Kim H, Rogler PJ, A Siegler M, Karlin KD. Isocyanide or nitrosyl complexation to hemes with varying tethered axial base ligand donors: synthesis and characterization. J Biol Inorg Chem 2016; 21:729-43. [PMID: 27350154 PMCID: PMC5003086 DOI: 10.1007/s00775-016-1369-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 06/08/2016] [Indexed: 01/08/2023]
Abstract
A series of ferrous-heme 2,6-dimethylphenyl isocyanide (DIMPI) and ferrous-heme mononitrosyl complexes have been synthesized and characterized. The heme portion of the complexes studied is varied with respect to the nature of the axial ligand, including complexes, where it is covalently tethered to the porphyrinate periphery. Reduced heme complexes, [(F8)Fe(II)], [(P(Py))Fe(II)], [(P(Im))Fe(II)], and [(P(ImH))Fe(II)], where F8 = tetrakis(2,6-difluorophenyl)-porphyrinate and P(Py), P(Im), and P(ImH) are partially fluorinated tetraaryl porphyrinates with covalently appended axial base pyridyl/imidazolyl or histamine moieties, were employed; P(ImH) is a new construct. Room temperature addition of DIMPI to these iron(II) complexes affords the bis-isocyanide species [(F8)Fe(II)-(DIMPI)2] in the case of [(F8)Fe(II)], while for the other hemes, mono-DIMPI compounds are obtained, [(P(Py))Fe(II)-(DIMPI)] [(2)-DIMPI], [(P(Im))Fe(II)-(DIMPI)] [(3)-DIMPI], and [(P(ImH))Fe(II)-(DIMPI)] [(4)-DIMPI]. The structures of complexes (3)-DIMPI and (4)-DIMPI have been determined by single crystal X-ray crystallography, where interesting H…F(porphryinate aryl group) interactions are observed. (19)F-NMR spectra determined for these complexes suggest that H…F(porphyrinate aryl groups) attractions also occur in solution, the H atom coming either from the DIMPI methyl groups or from a porphyinate axial base imidazole or porphyrinate pyrrole. Similarly, we have used nitrogen monoxide to generate ferrous-nitrosyl complexes, a five-coordinate species for F8, [(F8)Fe(II)-(NO)], or low-spin six-coordinate compounds [(P(Py))Fe(II)-(NO)], [(P(Im))Fe(II)-(NO)], and [(P(ImH))Fe(II)-(NO)]. The DIMPI and mononitrosyl complexes have also been characterized using UV-Vis, IR, (1)H-NMR, and EPR spectroscopies.
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Affiliation(s)
- Savita K Sharma
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Hyun Kim
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Patrick J Rogler
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Maxime A Siegler
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Kenneth D Karlin
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD, 21218, USA.
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127
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Goldberg JM, Loas A, Lippard SJ. Metalloneurochemistry and the Pierian Spring: 'Shallow Draughts Intoxicate the Brain'. Isr J Chem 2016; 56:791-802. [PMID: 28190893 DOI: 10.1002/ijch.201600034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Metal ions perform critical and diverse functions in nervous system physiology and pathology. The field of metalloneurochemistry aims to understand the mechanistic bases for these varied roles at the molecular level. Here, we review several areas of research that illustrate progress toward achieving this ambitious goal and identify key challenges for the future. We examine the use of lithium as a mood stabilizer, the roles of mobile zinc and copper in the synapse, the interplay of nitric oxide and metals in retrograde signaling, and the regulation of iron homeostasis in the brain. These topics were chosen to demonstrate not only the breadth of the field, but also to highlight opportunities for discovery by studying such complex systems in greater detail. We are beginning to uncover the principles by which receptors and transmitters utilize metal ions to modulate neurotransmission. These advances have revealed exciting new insights into the intricate mechanisms that give rise to learning, memory, and sensory perception, while opening many new avenues for further exploration.
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Affiliation(s)
- Jacob M Goldberg
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (U.S.A.)
| | - Andrei Loas
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (U.S.A.)
| | - Stephen J Lippard
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (U.S.A.)
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128
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Piñeiro-López L, Ortega-Villar N, Muñoz MC, Molnár G, Cirera J, Moreno-Esparza R, Ugalde-Saldívar VM, Bousseksou A, Ruiz E, Real JA. Electronic Structure Modulation in an Exceptionally Stable Non-Heme Nitrosyl Iron(II) Spin-Crossover Complex. Chemistry 2016; 22:12741-51. [DOI: 10.1002/chem.201601172] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Lucía Piñeiro-López
- Instituto de Ciencia Molecular (ICMol); Universidad de Valencia; 46980 Paterna Valencia Spain
| | - Norma Ortega-Villar
- Facultad de Química (UNAM); Edificio B.; Av. Universidad 3000, Coyoacán México D.F. 04510 México
| | - M. Carmen Muñoz
- Departamento de Física Aplicada; Universitat Politècnica de València; 46022 Valencia Spain
| | - Gábor Molnár
- LCC; CNRS & Université de Toulouse (UPS, INP); 205 route de Narbonne 31077 Toulouse France
| | - Jordi Cirera
- Departament de Química Inorgànica i Orgànica; Secció de Química Inorgànica; Institut de Recerca de Química Teòrica i Computacional; Universitat de Barcelona; Diagonal 645 Barcelona 08028 Spain
| | - Rafael Moreno-Esparza
- Facultad de Química (UNAM); Edificio B.; Av. Universidad 3000, Coyoacán México D.F. 04510 México
| | | | - Azzedine Bousseksou
- LCC; CNRS & Université de Toulouse (UPS, INP); 205 route de Narbonne 31077 Toulouse France
| | - Eliseo Ruiz
- Departament de Química Inorgànica i Orgànica; Secció de Química Inorgànica; Institut de Recerca de Química Teòrica i Computacional; Universitat de Barcelona; Diagonal 645 Barcelona 08028 Spain
| | - José A. Real
- Instituto de Ciencia Molecular (ICMol); Universidad de Valencia; 46980 Paterna Valencia Spain
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129
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Robinson JL, Brynildsen MP. Discovery and dissection of metabolic oscillations in the microaerobic nitric oxide response network of Escherichia coli. Proc Natl Acad Sci U S A 2016; 113:E1757-66. [PMID: 26951670 PMCID: PMC4812703 DOI: 10.1073/pnas.1521354113] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The virulence of many pathogens depends upon their ability to cope with immune-generated nitric oxide (NO·). In Escherichia coli, the major NO· detoxification systems are Hmp, an NO· dioxygenase (NOD), and NorV, an NO· reductase (NOR). It is well established that Hmp is the dominant system under aerobic conditions, whereas NorV dominates anaerobic conditions; however, the quantitative contributions of these systems under the physiologically relevant microaerobic regime remain ill defined. Here, we investigated NO· detoxification in environments ranging from 0 to 50 μM O2, and discovered a regime in which E. coli NO· defenses were severely compromised, as well as conditions that exhibited oscillations in the concentration of NO·. Using an integrated computational and experimental approach, E. coli NO· detoxification was found to be extremely impaired at low O2 due to a combination of its inhibitory effects on NorV, Hmp, and translational activities, whereas oscillations were found to result from a kinetic competition for O2 between Hmp and respiratory cytochromes. Because at least 777 different bacterial species contain the genetic requirements of this stress response oscillator, we hypothesize that such oscillatory behavior could be a widespread phenomenon. In support of this hypothesis,Pseudomonas aeruginosa, whose respiratory and NO· response networks differ considerably from those of E. coli, was found to exhibit analogous oscillations in low O2 environments. This work provides insight into how bacterial NO· defenses function under the low O2 conditions that are likely to be encountered within host environments.
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Affiliation(s)
- Jonathan L Robinson
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544
| | - Mark P Brynildsen
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544
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130
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Rodrigues GS, Godinho RO, Kiyomoto BH, Gamba J, Oliveira ASB, Schmidt B, Tengan CH. Integrated analysis of the involvement of nitric oxide synthesis in mitochondrial proliferation, mitochondrial deficiency and apoptosis in skeletal muscle fibres. Sci Rep 2016; 6:20780. [PMID: 26856437 PMCID: PMC4746761 DOI: 10.1038/srep20780] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 01/12/2016] [Indexed: 12/18/2022] Open
Abstract
Nitric oxide (NO) is an important signaling messenger involved in different mitochondrial processes but only few studies explored the participation of NO in mitochondrial abnormalities found in patients with genetic mitochondrial deficiencies. In this study we verified whether NO synthase (NOS) activity was altered in different types of mitochondrial abnormalities and whether changes in mitochondrial function and NOS activity could be associated with the induction of apoptosis. We performed a quantitative and integrated analysis of NOS activity in individual muscle fibres of patients with mitochondrial diseases, considering mitochondrial function (cytochrome-c-oxidase activity), mitochondrial content, mitochondrial DNA mutation and presence of apoptotic nuclei. Our results indicated that sarcolemmal NOS activity was increased in muscle fibres with mitochondrial proliferation, supporting the relevance of neuronal NOS in the mitochondrial biogenesis process. Sarcoplasmic NOS activity was reduced in cytochrome-c-oxidase deficient fibres, probably as a consequence of the involvement of NO in the regulation of the respiratory chain. Alterations in NOS activity or mitochondrial abnormalities were not predisposing factors to apoptotic nuclei. Taken together, our results show that NO can be considered a potential molecular target for strategies to increase mitochondrial content and indicate that this approach may not be associated with increased apoptotic events.
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Affiliation(s)
- Gabriela Silva Rodrigues
- Department of Neurology &Neurosurgery, Escola Paulista de Medicina, Universidade Federal de São Paulo;São Paulo, Brazil
| | - Rosely Oliveira Godinho
- Division of Cellular Pharmacology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Beatriz Hitomi Kiyomoto
- Department of Neurology &Neurosurgery, Escola Paulista de Medicina, Universidade Federal de São Paulo;São Paulo, Brazil
| | - Juliana Gamba
- Department of Neurology &Neurosurgery, Escola Paulista de Medicina, Universidade Federal de São Paulo;São Paulo, Brazil
| | - Acary Souza Bulle Oliveira
- Department of Neurology &Neurosurgery, Escola Paulista de Medicina, Universidade Federal de São Paulo;São Paulo, Brazil
| | - Beny Schmidt
- Department of Pathology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Célia Harumi Tengan
- Department of Neurology &Neurosurgery, Escola Paulista de Medicina, Universidade Federal de São Paulo;São Paulo, Brazil
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131
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132
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Vila-Verde C, Marinho ALZ, Lisboa SF, Guimarães FS. Nitric oxide in the prelimbic medial prefrontal cortex is involved in the anxiogenic-like effect induced by acute restraint stress in rats. Neuroscience 2016; 320:30-42. [PMID: 26812037 DOI: 10.1016/j.neuroscience.2016.01.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 01/02/2016] [Accepted: 01/18/2016] [Indexed: 12/13/2022]
Abstract
Neurons containing the neuronal nitric oxide synthase (nNOS) enzyme are located in brain areas related to defensive behavior, such as the ventromedial prefrontal cortex (vMPFC). Rats exposed to a live predator (a cat) present anxiety-like behavior and an increased number of nNOS-positive neurons in this brain area one-week later. Moreover, stress-related behavioral changes in rodents can be prevented by systemic or local vMPFC nNOS inhibition. In the present study we investigated if acute restraint stress (RS)-induced delayed (one-week) anxiogenic-like effect was associated with increased nNOS expression or activity in the vMPFC. Furthermore, we also tested if local pharmacological nNOS inhibition would prevent stress-induced behavioral changes. Male Wistar rats were submitted to RS for 3h and tested in the elevated plus maze (EPM) 24h or 7 days later. Two hours after the EPM test, their brains were removed, processed and nNOS expression in the vMPFC was evaluated by immunohistochemistry. Another group of animals was used for measuring NO metabolites (NOx; an indirect measure of NOS activity) immediately after the EPM test, 24h after RS. Independent groups had guide cannula implanted bilaterally into the prelimbic (PL) portion of vMPFC. Five to six days after surgery, the animals were submitted to RS and 24h later received local administration of the nNOS inhibitor, N-propyl-l-arginine (NPLA; 0.04 nmol). They were tested in the EPM 10 min later. RS-induced anxiogenic-like effect was accompanied by increased nNOS expression in the PL (p<0.05), but not in the infralimbic (IL) vMPFC, both 24h and 7 days after RS. Moreover, open-arm exploration of the EPM was negatively correlated with nNOS expression (p<0.05) and NOx levels (p<0.05) in the PL. The anxiogenic-like effect observed 24h after RS was prevented by NPLA (p<0.05). Our results suggest that RS-induced anxiogenic-like effect might depend on increased nNOS-mediated signaling in the PL MPFC.
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Affiliation(s)
- C Vila-Verde
- Department of Pharmacology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil; Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, Brazil.
| | - A L Z Marinho
- Department of Pharmacology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil; Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, Brazil
| | - S F Lisboa
- Department of Pharmacology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil; Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, Brazil.
| | - F S Guimarães
- Department of Pharmacology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil; Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, Brazil
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133
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Mechanism of Thiol-Induced Nitrogen(II) Oxide Donation by Furoxans: a Quantum-Chemical Study. Chem Heterocycl Compd (N Y) 2016. [DOI: 10.1007/s10593-016-1804-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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134
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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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135
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Palagina IA, Kudria MY, Lalymenko OS. ROLE OF NITRIC OXIDE METABOLITES WITHIN THE IMPACT OF THE SUB-TOXIC SUCCINAMIDES DOSES ON STATE OF HEMOSTASIS. FIZIOLOHICHNYI ZHURNAL (KIEV, UKRAINE : 1994) 2016; 62:34-42. [PMID: 29762969 DOI: 10.15407/fz62.06.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We investigated the role of changes in the endogenous nitric oxide (NO) metabolism during the influence of succinic acid amides as biotransformation products of an anti-diabetic drug on the state of hemostasis. In experiment with rats, synthetic succinamides were applied in quanti- ties equimolar to the sub-toxic dose of the pharmaceutical substance. We investigated the indicators characterizing the state of platelet and coagulation hemostasis in the blood plasma, the content of the stable NO metabolites and the activity of nitrogen oxide synthase (NOS) in the liver homogenate, blood plasma and urine of rats. We found that sub-chronic succinamides introduction reduced the nitrite and nitrate anions concentration in the blood plasma (by 30-50 and 20-35% resp.), liver (by 16-19 and 14-18%) and urine (by 50-70 and 38-55%). These changes were essentially dependent on the reduction in the NOS activity (by 33%). The studied compounds showed a 1.5 fold increase in the coagulation potential of the blood plasma and cause a 20% boost in the aggregation of thrombocytes. Analysis of the pair correlation coefficients showed positive association of the changes in indicators of the NO metabolism and hemostasis. The obtained results suggest that the registered manifestation of the pro-coagulation and thrombogenic action of succinamides applied in the sub-toxic doses is partially determined by a drop of the vasoactive NO pool that in turn, occurs due to a decline of the NOS activity.
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136
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Sodium nitrite attenuates MMP-9 production by endothelial cells and may explain similar effects of atorvastatin. Naunyn Schmiedebergs Arch Pharmacol 2015; 389:223-31. [PMID: 26614570 DOI: 10.1007/s00210-015-1192-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 11/11/2015] [Indexed: 12/27/2022]
Abstract
Imbalanced matrix metalloproteinase (MMP) activity promotes cardiovascular alterations that are attenuated by statins. These drugs exert pleiotropic effects independent of cholesterol concentrations, including upregulation of nitric oxide (NO) formation and MMP downregulation. However, statins also increase tissue concentrations of nitrites, which activate new signaling pathways independent of NO. We examined whether atorvastatin attenuates MMP-9 production by human umbilical vein endothelial cells (HUVEC) stimulated with phorbol 12-myristate 13-acetate (PMA) by mechanisms possibly involving increased nitrite, and whether this effect results of NO formation. We also examined whether such an effect is improved by sildenafil, an inhibitor of phosphodiesterase-5 which potentiates NO-induced increases in cyclic GMP. MMP activity and nitrite concentrations were measured by gelatin zymography and ozone-based reductive chemiluminescence, respectively, in the conditioned medium of HUVECs incubated for 24 h with these drugs. Phospho-NFκB p65 concentrations were measured in cell lysate to assess NFκB activation. Atorvastatin attenuated PMA-induced MMP-9 gelatinolytic activity by mechanisms not involving NO, although it increased nitrite concentrations, whereas sildenafil had no effects. Combining both drugs showed no improved responses compared to atorvastatin alone. While sodium nitrite attenuated MMP-9 production by HUVECs, adding hemoglobin (NO scavenger) did not affect the responses to nitrite. Neither atorvastatin nor nitrite inhibited PMA-induced increases in phospho-NFκB p65 concentrations. These findings show that sodium nitrite attenuates MMP-9 production by endothelial cells and may explain similar effects exerted by atorvastatin. With both drugs, the inhibitory effects on MMP-9 production are not dependent on NO formation or on inhibition of NFκB activation. Our findings may help to elucidate important new nitrite-mediated mechanisms by which statins affect imbalanced MMP activity in a variety of cardiovascular disease.
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137
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An ensemble-guided approach identifies ClpP as a major regulator of transcript levels in nitric oxide-stressed Escherichia coli. Metab Eng 2015; 31:22-34. [DOI: 10.1016/j.ymben.2015.06.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 03/21/2015] [Accepted: 06/15/2015] [Indexed: 11/23/2022]
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138
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Examining the reaction of NO and H2S and the possible cross-talk between the two signaling pathways. Proc Natl Acad Sci U S A 2015; 112:10573-4. [PMID: 26269567 DOI: 10.1073/pnas.1513510112] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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139
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Shimizu T, Huang D, Yan F, Stranava M, Bartosova M, Fojtíková V, Martínková M. Gaseous O2, NO, and CO in signal transduction: structure and function relationships of heme-based gas sensors and heme-redox sensors. Chem Rev 2015; 115:6491-533. [PMID: 26021768 DOI: 10.1021/acs.chemrev.5b00018] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Toru Shimizu
- †Department of Cell Biology and Genetics and Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, Guangdong 515041, China
- ‡Department of Biochemistry, Faculty of Science, Charles University in Prague, Prague 2 128 43, Czech Republic
- §Research Center for Compact Chemical System, National Institute of Advanced Industrial Science and Technology (AIST), Sendai 983-8551, Japan
| | - Dongyang Huang
- †Department of Cell Biology and Genetics and Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Fang Yan
- †Department of Cell Biology and Genetics and Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Martin Stranava
- ‡Department of Biochemistry, Faculty of Science, Charles University in Prague, Prague 2 128 43, Czech Republic
| | - Martina Bartosova
- ‡Department of Biochemistry, Faculty of Science, Charles University in Prague, Prague 2 128 43, Czech Republic
| | - Veronika Fojtíková
- ‡Department of Biochemistry, Faculty of Science, Charles University in Prague, Prague 2 128 43, Czech Republic
| | - Markéta Martínková
- ‡Department of Biochemistry, Faculty of Science, Charles University in Prague, Prague 2 128 43, Czech Republic
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140
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Luebke JL, Giedroc DP. Cysteine sulfur chemistry in transcriptional regulators at the host-bacterial pathogen interface. Biochemistry 2015; 54:3235-49. [PMID: 25946648 DOI: 10.1021/acs.biochem.5b00085] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Hosts employ myriad weapons to combat invading microorganisms as an integral feature of the host-bacterial pathogen interface. This interface is dominated by highly reactive small molecules that collectively induce oxidative stress. Successful pathogens employ transcriptional regulatory proteins that sense these small molecules directly or indirectly via a change in the ratio of reduced to oxidized low-molecular weight (LMW) thiols that collectively comprise the redox buffer in the cytoplasm. These transcriptional regulators employ either a prosthetic group or reactive cysteine residue(s) to effect changes in the transcription of genes that encode detoxification and repair systems that is driven by regulator conformational switching between high-affinity and low-affinity DNA-binding states. Cysteine harbors a highly polarizable sulfur atom that readily undergoes changes in oxidation state in response to oxidative stress to produce a range of regulatory post-translational modifications (PTMs), including sulfenylation (S-hydroxylation), mixed disulfide bond formation with LMW thiols (S-thiolation), di- and trisulfide bond formation, S-nitrosation, and S-alkylation. Here we discuss several examples of structurally characterized cysteine thiol-specific transcriptional regulators that sense changes in cellular redox balance, focusing on the nature of the cysteine PTM itself and the interplay of small molecule oxidative stressors in mediating a specific transcriptional response.
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Affiliation(s)
- Justin L Luebke
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405-7102, United States
| | - David P Giedroc
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405-7102, United States
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141
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Low alveolar and bronchial nitric oxide in severe uncomplicated obesity. Obes Res Clin Pract 2015; 9:603-8. [PMID: 25863983 DOI: 10.1016/j.orcp.2015.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 02/18/2015] [Accepted: 03/19/2015] [Indexed: 12/25/2022]
Abstract
BACKGROUND Fractional concentration of exhaled nitric oxide (FeNO) is a recognized biomarker of the lower respiratory tract, where it is produced by the proximal conducting airways and the expansible peripheral bronchoalveolar compartment. We have previously shown that large increase in body mass decreases FeNO. Here we evaluated bronchial and alveolar components of the NO output of the lower respiratory tract in subjects with severe uncomplicated obesity (OB). METHODS Fifteen OB subjects (BMI 45.3 ± 5.6 kg/m(2)), 15 healthy controls (HC) (BMI 22.4 ± 2.4 kg/m(2)) and 10 obese subjects who experienced weight loss after bariatric surgery (OBS) (BMI 31.2 ± 3.4 kg/m(2)), were examined. Anthropometry and respiratory lung tests were performed. Exhaled NO was assessed using multiple single-breath NO analysis at different constant expiratory flow rates. From the fractional NO concentration measured at each flow-rate, the total NO flux between tissue and gas phase in the bronchial lumen (J'awNO), and the alveolar NO concentration (CANO) were extrapolated. RESULTS Measured FeNO levels at 50 mL/s were lower in OB compared with HC and OBS (11.6 ± 2.8 ppb, 18.0 ± 4.1 ppb and 17.6 ± 2.9 ppb, respectively, p < 0.05). In OB, both J'awNO and CANO resulted significantly lower than OBS and HC values. CONCLUSIONS Respiratory NO output is decreased in severe uncomplicated obesity for the reduction of both large/central airway maximal NO flux and alveolar NO concentration. The pathophysiological relevance of airway NO abnormalities in severe obese phenotype remains to be investigated.
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142
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Tsikas D. Circulating and excretory nitrite and nitrate: Their value as measures of nitric oxide synthesis, bioavailability and activity is inherently limited. Nitric Oxide 2015; 45:1-3. [DOI: 10.1016/j.niox.2015.01.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 01/03/2015] [Accepted: 01/03/2015] [Indexed: 10/24/2022]
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143
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Nitrite reduction by molybdoenzymes: a new class of nitric oxide-forming nitrite reductases. J Biol Inorg Chem 2015; 20:403-33. [DOI: 10.1007/s00775-014-1234-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 12/14/2014] [Indexed: 02/07/2023]
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144
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Maia LB, Pereira V, Mira L, Moura JJG. Nitrite reductase activity of rat and human xanthine oxidase, xanthine dehydrogenase, and aldehyde oxidase: evaluation of their contribution to NO formation in vivo. Biochemistry 2015; 54:685-710. [PMID: 25537183 DOI: 10.1021/bi500987w] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nitrite is presently considered a NO "storage form" that can be made available, through its one-electron reduction, to maintain NO formation under hypoxia/anoxia. The molybdoenzymes xanthine oxidase/dehydrogenase (XO/XD) and aldehyde oxidase (AO) are two of the most promising mammalian nitrite reductases, and in this work, we characterized NO formation by rat and human XO/XD and AO. This is the first characterization of human enzymes, and our results support the employment of rat liver enzymes as suitable models of the human counterparts. A comprehensive kinetic characterization of the effect of pH on XO and AO-catalyzed nitrite reduction showed that the enzyme's specificity constant for nitrite increase 8-fold, while the Km(NO2(-)) decrease 6-fold, when the pH decreases from 7.4 to 6.3. These results demonstrate that the ability of XO/AO to trigger NO formation would be greatly enhanced under the acidic conditions characteristic of ischemia. The dioxygen inhibition was quantified, and the Ki(O2) values found (24.3-48.8 μM) suggest that in vivo NO formation would be fine-tuned by dioxygen availability. The potential in vivo relative physiological relevance of XO/XD/AO-dependent pathways of NO formation was evaluated using HepG2 and HMEC cell lines subjected to hypoxia. NO formation by the cells was found to be pH-, nitrite-, and dioxygen-dependent, and the relative contribution of XO/XD plus AO was found to be as high as 50%. Collectively, our results supported the possibility that XO/XD and AO can contribute to NO generation under hypoxia inside a living human cell. Furthermore, the molecular mechanism of XO/AO-catalyzed nitrite reduction was revised.
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Affiliation(s)
- Luisa B Maia
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa , 2829-516 Caparica, Portugal
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145
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Andriani KF, Caramori GF, Muñoz-Castro A, Doro FG. The influence of L ligands on the {RuNO}6/7 bonding situation in cis-[Ru(NO)(NO2)L1–4]q complexes: a theoretical insight. RSC Adv 2015. [DOI: 10.1039/c5ra10888h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The nature of the Ru–NO interaction before and after reduction of cis-[Ru(NO)(NO2)L1–4]q complexes is modulated by the coordination environment of the metallic center, resulting in more labile on complexes with weak π-acceptor ligands.
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Affiliation(s)
- K. F. Andriani
- Departamento de Química
- Universidade Federal de Santa Catarina – UFSC
- Campus Universitário
- Florianópolis
- Brazil
| | - G. F. Caramori
- Departamento de Química
- Universidade Federal de Santa Catarina – UFSC
- Campus Universitário
- Florianópolis
- Brazil
| | - A. Muñoz-Castro
- Facultad de Ingenieria
- Universidad Autonoma de Chile
- Santiago
- Chile
| | - F. G. Doro
- Departamento de Química Geral e Inorgânica
- Universidade Federal da Bahia – UFBA
- Salvador
- Brazil
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146
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Recent Progress in Photoinduced NO Delivery With Designed Ruthenium Nitrosyl Complexes. ADVANCES IN INORGANIC CHEMISTRY 2015. [DOI: 10.1016/bs.adioch.2014.11.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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147
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Damasceno FC, Facci RR, da Silva TM, Toledo JC. Mechanisms and kinetic profiles of superoxide-stimulated nitrosative processes in cells using a diaminofluorescein probe. Free Radic Biol Med 2014; 77:270-80. [PMID: 25242205 DOI: 10.1016/j.freeradbiomed.2014.09.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 09/01/2014] [Accepted: 09/06/2014] [Indexed: 11/18/2022]
Abstract
In this study, we examined the mechanisms and kinetic profiles of intracellular nitrosative processes using diaminofluorescein (DAF-2) as a target in RAW 264.7 cells. The intracellular formation of the fluorescent, nitrosated product diaminofluorescein triazol (DAFT) from both endogenous and exogenous nitric oxide (NO) was prevented by deoxygenation and by cell membrane-permeable superoxide (O2(-)) scavengers but not by extracellular bovine Cu,Zn-SOD. In addition, the DAFT formation rate decreased in the presence of cell membrane-permeable Mn porphyrins that are known to scavenge peroxynitrite (ONOO(-)) but was enhanced by HCO3(-)/CO2. Together, these results indicate that nitrosative processes in RAW 264.7 cells depend on endogenous intracellular O2(-) and are stimulated by ONOO(-)/CO2-derived radical oxidants. The N2O3 scavenger sodium azide (NaN3) only partially attenuated the DAFT formation rate and only with high NO (>120 nM), suggesting that DAFT formation occurs by nitrosation (azide-susceptible DAFT formation) and predominantly by oxidative nitrosylation (azide-resistant DAFT formation). Interestingly, the DAFT formation rate increased linearly with NO concentrations of up to 120-140 nM but thereafter underwent a sharp transition and became insensitive to NO. This behavior indicates the sudden exhaustion of an endogenous cell substrate that reacts rapidly with NO and induces nitrosative processes, consistent with the involvement of intracellular O2(-). On the other hand, intracellular DAFT formation stimulated by a fixed flux of xanthine oxidase-derived extracellular O2(-) that also occurs by nitrosation and oxidative nitrosylation increased, peaked, and then decreased with increasing NO, as previously observed. Thus, our findings complementarily show that intra- and extracellular O2(-)-dependent nitrosative processes occurring by the same chemical mechanisms do not necessarily depend on NO concentration and exhibit different unusual kinetic profiles with NO dynamics, depending on the biological compartment in which NO and O2(-) interact.
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Affiliation(s)
- Fernando Cruvinel Damasceno
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, CEP 14040-901, Ribeirão Preto, SP, Brazil
| | - Rômulo Rodrigues Facci
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, CEP 14040-901, Ribeirão Preto, SP, Brazil
| | - Thalita Marques da Silva
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, CEP 14040-901, Ribeirão Preto, SP, Brazil
| | - José Carlos Toledo
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, CEP 14040-901, Ribeirão Preto, SP, Brazil.
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148
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Hoos MD, Vitek MP, Ridnour LA, Wilson J, Jansen M, Everhart A, Wink DA, Colton CA. The impact of human and mouse differences in NOS2 gene expression on the brain's redox and immune environment. Mol Neurodegener 2014; 9:50. [PMID: 25403885 PMCID: PMC4247207 DOI: 10.1186/1750-1326-9-50] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 10/10/2014] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Mouse models are used in the study of human disease. Despite well-known homologies, the difference in immune response between mice and humans impacts the application of data derived from mice to human disease outcomes. Nitric oxide synthase-2 (NOS2) is a key gene that displays species-specific outcomes via altered regulation of the gene promoter and via post-transcriptional mechanisms in humans that are not found in mice. The resulting levels of NO produced by activation of human NOS2 are different from the levels of NO produced by mouse Nos2. Since both tissue redox environment and immune responsiveness are regulated by the level of NO and its interactions, we investigated the significance of mouse and human differences on brain oxidative stress and on immune activation in HuNOS2tg/mNos2-/- mice that express the entire human NOS2 gene and that lack a functional mNos2 compared to wild type (WT) mice that express normal mNos2. METHODS/RESULTS Similarly to human, brain tissue from HuNOS2tg/mNos2-/- mice showed the presence of a NOS2 gene 3'UTR binding site. We also identified miRNA-939, the binding partner for this site, in mouse brain lysates and further demonstrated reduced levels of nitric oxide (NO) typical of the human immune response on injection with lipopolysaccharide (LPS). HuNOS2tg/mNos2-/- brain samples were probed for characteristic differences in redox and immune gene profiles compared to WT mice using gene arrays. Selected genes were also compared against mNos2-/- brain lysates. Reconstitution of the human NOS2 gene significantly altered genes that encode multiple anti-oxidant proteins, oxidases, DNA repair, mitochondrial proteins and redox regulated immune proteins. Expression levels of typical pro-inflammatory, anti-inflammatory and chemokine genes were not significantly different with the exception of increased TNFα and Ccr1 mRNA expression in the HuNOS2tg/mNos2-/- mice compared to WT or mNos2-/- mice. CONCLUSIONS NO is a principle factor in establishing the tissue redox environment and changes in NO levels impact oxidative stress and immunity, both of which are primary characteristics of neurodegenerative diseases. The HuNOS2tg/mNos2-/- mice provide a potentially useful mechanism to address critical species- specific immune differences that can impact the study of human diseases.
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Affiliation(s)
- Michael D Hoos
- />Department of Neurosurgery, Stonybrook Health Sciences, Stony Brook, NY 11794 USA
| | - Michael P Vitek
- />Department of Neurology, Duke University Medical Center, Durham, NC 27710 USA
| | - Lisa A Ridnour
- />Radiation Biology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892 USA
| | - Joan Wilson
- />Department of Neurology, Duke University Medical Center, Durham, NC 27710 USA
| | - Marilyn Jansen
- />Department of Neurology, Duke University Medical Center, Durham, NC 27710 USA
| | - Angela Everhart
- />Department of Neurology, Duke University Medical Center, Durham, NC 27710 USA
| | - David A Wink
- />Radiation Biology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892 USA
| | - Carol A Colton
- />Department of Neurology, Duke University Medical Center, Durham, NC 27710 USA
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149
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Almeida LEF, Kamimura S, Kenyon N, Khaibullina A, Wang L, de Souza Batista CM, Quezado ZMN. Validation of a method to directly and specifically measure nitrite in biological matrices. Nitric Oxide 2014; 45:54-64. [PMID: 25445633 DOI: 10.1016/j.niox.2014.10.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 10/23/2014] [Accepted: 10/24/2014] [Indexed: 12/21/2022]
Abstract
The bioactivity of nitric oxide (NO) is influenced by chemical species generated through reactions with proteins, lipids, metals, and its conversion to nitrite and nitrate. A better understanding of the functions played by each of these species could be achieved by developing selective assays able of distinguishing nitrite from other NO species. Nagababu and Rifkind developed a method using acetic and ascorbic acids to measure nitrite-derived NO in plasma. Here, we adapted, optimized, and validated this method to assay nitrite in tissues. The method yielded linear measurements over 1-300 pmol of nitrite and was validated for tissue preserved in a nitrite stabilization solution composed of potassium ferricyanide, N-ethylmaleimide and NP-40. When samples were processed with chloroform, but not with methanol, ethanol, acetic acid or acetonitrile, reliable and reproducible nitrite measurements in up to 20 sample replicates were obtained. The method's accuracy in tissue was ≈ 90% and in plasma 99.9%. In mice, during basal conditions, brain, heart, lung, liver, spleen and kidney cortex had similar nitrite levels. In addition, nitrite tissue levels were similar regardless of when organs were processed: immediately upon collection, kept in stabilization solution for later analysis or frozen and later processed. After ip nitrite injections, rapidly changing nitrite concentrations in tissue and plasma could be measured and were shown to change in significantly distinct patterns. This validated method could be valuable for investigations of nitrite biology in conditions such as sickle cell disease, cardiovascular disease, and diabetes, where nitrite is thought to play a role.
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Affiliation(s)
- Luis E F Almeida
- The Sheikh Zayed Institute for Pediatric Surgical Innovation, Division of Pain Medicine, Children's National Medical Center, School of Medicine and Health Sciences George Washington University, Washington, DC 20010, USA
| | - Sayuri Kamimura
- The Sheikh Zayed Institute for Pediatric Surgical Innovation, Division of Pain Medicine, Children's National Medical Center, School of Medicine and Health Sciences George Washington University, Washington, DC 20010, USA
| | - Nicholas Kenyon
- The Sheikh Zayed Institute for Pediatric Surgical Innovation, Division of Pain Medicine, Children's National Medical Center, School of Medicine and Health Sciences George Washington University, Washington, DC 20010, USA
| | - Alfia Khaibullina
- The Sheikh Zayed Institute for Pediatric Surgical Innovation, Division of Pain Medicine, Children's National Medical Center, School of Medicine and Health Sciences George Washington University, Washington, DC 20010, USA
| | - Li Wang
- The Sheikh Zayed Institute for Pediatric Surgical Innovation, Division of Pain Medicine, Children's National Medical Center, School of Medicine and Health Sciences George Washington University, Washington, DC 20010, USA
| | | | - Zenaide M N Quezado
- The Sheikh Zayed Institute for Pediatric Surgical Innovation, Division of Pain Medicine, Children's National Medical Center, School of Medicine and Health Sciences George Washington University, Washington, DC 20010, USA.
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Sapp AM, Mogen AB, Almand EA, Rivera FE, Shaw LN, Richardson AR, Rice KC. Contribution of the nos-pdt operon to virulence phenotypes in methicillin-sensitive Staphylococcus aureus. PLoS One 2014; 9:e108868. [PMID: 25275514 PMCID: PMC4183505 DOI: 10.1371/journal.pone.0108868] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 09/04/2014] [Indexed: 12/30/2022] Open
Abstract
Nitric oxide (NO) is emerging as an important regulator of bacterial stress resistance, biofilm development, and virulence. One potential source of endogenous NO production in the pathogen Staphylococcus aureus is its NO-synthase (saNOS) enzyme, encoded by the nos gene. Although a role for saNOS in oxidative stress resistance, antibiotic resistance, and virulence has been recently-described, insights into the regulation of nos expression and saNOS enzyme activity remain elusive. To this end, transcriptional analysis of the nos gene in S. aureus strain UAMS-1 was performed, which revealed that nos expression increases during low-oxygen growth and is growth-phase dependent. Furthermore, nos is co-transcribed with a downstream gene, designated pdt, which encodes a prephenate dehydratase (PDT) enzyme involved in phenylalanine biosynthesis. Deletion of pdt significantly impaired the ability of UAMS-1 to grow in chemically-defined media lacking phenylalanine, confirming the function of this enzyme. Bioinformatics analysis revealed that the operon organization of nos-pdt appears to be unique to the staphylococci. As described for other S. aureus nos mutants, inactivation of nos in UAMS-1 conferred sensitivity to oxidative stress, while deletion of pdt did not affect this phenotype. The nos mutant also displayed reduced virulence in a murine sepsis infection model, and increased carotenoid pigmentation when cultured on agar plates, both previously-undescribed nos mutant phenotypes. Utilizing the fluorescent stain 4-Amino-5-Methylamino-2',7'-Difluorofluorescein (DAF-FM) diacetate, decreased levels of intracellular NO/reactive nitrogen species (RNS) were detected in the nos mutant on agar plates. These results reinforce the important role of saNOS in S. aureus physiology and virulence, and have identified an in vitro growth condition under which saNOS activity appears to be upregulated. However, the significance of the operon organization of nos-pdt and potential relationship between these two enzymes remains to be elucidated.
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Affiliation(s)
- April M. Sapp
- Department of Microbiology and Cell Science, University of Florida, Gainesville, Florida, United States of America
| | - Austin B. Mogen
- Department of Microbiology and Cell Science, University of Florida, Gainesville, Florida, United States of America
| | - Erin A. Almand
- Department of Microbiology, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Frances E. Rivera
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, Florida, United States of America
| | - Lindsey N. Shaw
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, Florida, United States of America
| | - Anthony R. Richardson
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Kelly C. Rice
- Department of Microbiology and Cell Science, University of Florida, Gainesville, Florida, United States of America
- * E-mail:
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