1
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Ronconi-Krüger N, Müller YMR, Nazari EM. Exploring developmental MeHg impact on extraembryonic and cardiac vessels and its effect on cardiomyocyte contractility. J Appl Toxicol 2024. [PMID: 38978343 DOI: 10.1002/jat.4661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 06/06/2024] [Accepted: 06/10/2024] [Indexed: 07/10/2024]
Abstract
The toxicity of methylmercury (MeHg) during embryonic development is a relevant issue that remains unclear and deserves investigation. In this sense, there is evidence that links the intake of contaminated food with cardiovascular pathologies in human adults and children. Thus, this study aimed to verify the impact of MeHg on the structure and integrity of extraembryonic and cardiac blood vessels and the contractile function of cardiomyocytes, also evaluating embryonic weight and the cardiosomatic index (CSI). Thus, chicken embryos, used as an experimental model, were exposed to a single dose of 0.1 μg MeHg/50 μl saline at E1.5 and analyzed at E10. After exposure, an increase in the number of extraembryonic blood vessels and the veins of the cardiac tissue was observed. These increases were accompanied by a reduction in the content of VEGF and VCAM proteins related to vessel growth and adhesiveness. Together, these results were related to reduced nitrite (NOx) levels. Furthermore, MeHg reduces the number of sarcomeres and increases the content of cardiac troponin I (cTnI), a protein that regulates contraction. In general, exposure to MeHg affected the integrity of extraembryonic and cardiac vessels and the contractile function of cardiomyocytes, which had a systemic impact evidenced by the reduction in embryonic weight gain and CSI.
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Affiliation(s)
- Nathália Ronconi-Krüger
- Departamento de Biologia Celular, Embriologia e Genética, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Yara Maria Rauh Müller
- Departamento de Biologia Celular, Embriologia e Genética, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Evelise Maria Nazari
- Departamento de Biologia Celular, Embriologia e Genética, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
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2
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Anastasiadi AT, Arvaniti VZ, Hudson KE, Kriebardis AG, Stathopoulos C, D’Alessandro A, Spitalnik SL, Tzounakas VL. Exploring unconventional attributes of red blood cells and their potential applications in biomedicine. Protein Cell 2024; 15:315-330. [PMID: 38270470 PMCID: PMC11074998 DOI: 10.1093/procel/pwae001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/08/2024] [Indexed: 01/26/2024] Open
Affiliation(s)
- Alkmini T Anastasiadi
- Department of Biochemistry, School of Medicine, University of Patras, 26504 Patras, Greece
| | - Vasiliki-Zoi Arvaniti
- Department of Biochemistry, School of Medicine, University of Patras, 26504 Patras, Greece
| | - Krystalyn E Hudson
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York City, NY 10032, USA
| | - Anastasios G Kriebardis
- Laboratory of Reliability and Quality Control in Laboratory Hematology (HemQcR), Department of Biomedical Sciences, School of Health & Caring Sciences, University of West Attica (UniWA), 12243 Egaleo, Greece
| | | | - Angelo D’Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, 13001 Aurora, CO, USA
| | - Steven L Spitalnik
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York City, NY 10032, USA
| | - Vassilis L Tzounakas
- Department of Biochemistry, School of Medicine, University of Patras, 26504 Patras, Greece
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3
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Majerczak J, Drzymala‐Celichowska H, Grandys M, Kij A, Kus K, Celichowski J, Krysciak K, Molik WA, Szkutnik Z, Zoladz JA. Exercise Training Decreases Nitrite Concentration in the Heart and Locomotory Muscles of Rats Without Changing the Muscle Nitrate Content. J Am Heart Assoc 2024; 13:e031085. [PMID: 38214271 PMCID: PMC10926815 DOI: 10.1161/jaha.123.031085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 11/20/2023] [Indexed: 01/13/2024]
Abstract
BACKGROUND Skeletal muscles are postulated to be a potent regulator of systemic nitric oxide homeostasis. In this study, we aimed to evaluate the impact of physical training on the heart and skeletal muscle nitric oxide bioavailability (judged on the basis of intramuscular nitrite and nitrate) in rats. METHODS AND RESULTS Rats were trained on a treadmill for 8 weeks, performing mainly endurance running sessions with some sprinting runs. Muscle nitrite (NO2-) and nitrate (NO3-) concentrations were measured using a high-performance liquid chromatography-based method, while amino acids, pyruvate, lactate, and reduced and oxidized glutathione were determined using a liquid chromatography coupled with tandem mass spectrometry technique. The content of muscle nitrite reductases (electron transport chain proteins, myoglobin, and xanthine oxidase) was assessed by western immunoblotting. We found that 8 weeks of endurance training decreased basal NO2- in the locomotory muscles and in the heart, without changes in the basal NO3-. In the slow-twitch oxidative soleus muscle, the decrease in NO2- was already present after the first week of training, and the content of nitrite reductases remained unchanged throughout the entire period of training, except for the electron transport chain protein content, which increased no sooner than after 8 weeks of training. CONCLUSIONS Muscle NO2- level, opposed to NO3-, decreases in the time course of training. This effect is rapid and already visible in the slow-oxidative soleus after the first week of training. The underlying mechanisms of training-induced muscle NO2- decrease may involve an increase in the oxidative stress, as well as metabolite changes related to an increased muscle anaerobic glycolytic activity contributing to (1) direct chemical reduction of NO2- or (2) activation of muscle nitrite reductases.
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Affiliation(s)
- Joanna Majerczak
- Chair of Exercise Physiology and Muscle Bioenergetics, Faculty of Health SciencesJagiellonian University Medical CollegeKrakowPoland
| | - Hanna Drzymala‐Celichowska
- Department of Neurobiology, Faculty of Health SciencesPoznan University of Physical EducationPoznanPoland
- Department of Physiology and Biochemistry, Faculty of Health SciencesPoznan University of Physical EducationPoznanPoland
| | - Marcin Grandys
- Chair of Exercise Physiology and Muscle Bioenergetics, Faculty of Health SciencesJagiellonian University Medical CollegeKrakowPoland
| | - Agnieszka Kij
- Jagiellonian Centre for Experimental Therapeutics (JCET)Jagiellonian UniversityKrakowPoland
| | - Kamil Kus
- Jagiellonian Centre for Experimental Therapeutics (JCET)Jagiellonian UniversityKrakowPoland
| | - Jan Celichowski
- Department of Neurobiology, Faculty of Health SciencesPoznan University of Physical EducationPoznanPoland
| | - Katarzyna Krysciak
- Department of Neurobiology, Faculty of Health SciencesPoznan University of Physical EducationPoznanPoland
| | - Weronika A. Molik
- Chair of Exercise Physiology and Muscle Bioenergetics, Faculty of Health SciencesJagiellonian University Medical CollegeKrakowPoland
- University of FloridaGainesvilleFLUSA
| | | | - Jerzy A. Zoladz
- Chair of Exercise Physiology and Muscle Bioenergetics, Faculty of Health SciencesJagiellonian University Medical CollegeKrakowPoland
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4
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Anju BS, Nair NR, Kundu S. Nitrite and Nitric Oxide Interconversion at Mononuclear Copper(II): Insight into the Role of the Red Copper Site in Denitrification. Angew Chem Int Ed Engl 2023; 62:e202311523. [PMID: 37800603 DOI: 10.1002/anie.202311523] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/04/2023] [Accepted: 10/06/2023] [Indexed: 10/07/2023]
Abstract
Nitrite (NO2 - ) and nitric oxide (NO) interconversion is crucial for maintaining optimum NO flux in mammalian physiology. Herein we demonstrate that [L2 CuII (nitrite)]+ moieties (in 2 a and 2 b; where, L = Me2 PzPy and Me2 PzQu) with distorted octahedral geometry undergo facile reduction to provide tetrahedral [L2 CuI ]+ (in 3 a and 3 b) and NO in the presence of biologically relevant reductants, such as 4-methoxy-2,6-di-tert-butylphenol (4-MeO-2,6-DTBP, a tyrosine model) and N-benzyl-1,4-dihydronicotinamide (BNAH, a NAD(P)H model). Interestingly, the reaction of excess NO gas with [L2 CuII (MeCN)2 ]2+ (in 1 a) provides a putative {CuNO}10 species, which is effective in mediating the nitrosation of various nucleophiles, such as thiol and amine. Generation of the transient {CuNO}10 species in wet acetonitrile leads to NO2 - as assessed by Griess assay and 14 N/15 N-FTIR analyses. A detailed study reveals that the bidirectional NOx -reactivity, namely, nitrite reductase (NIR) and NO oxidase (NOO), at a common CuII site, is governed by the geometric-preference-driven facile CuII /CuI redox process. Of broader interest, this study not only highlights potential strategies for the design of copper-based catalysts for nitrite reduction, but also strengthens the previous postulates regarding the involvement of red copper proteins in denitrification.
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Affiliation(s)
- Balakrishnan S Anju
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-Tvm) Thiruvananthapuram, 695551, Kerala, India
| | - Neeraja R Nair
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-Tvm) Thiruvananthapuram, 695551, Kerala, India
| | - Subrata Kundu
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-Tvm) Thiruvananthapuram, 695551, Kerala, India
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5
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Sahana T, Valappil AK, Amma ASPR, Kundu S. NO Generation from Nitrite at Zinc(II): Role of Thiol Persulfidation in the Presence of Sulfane Sulfur. ACS ORGANIC & INORGANIC AU 2023; 3:246-253. [PMID: 37810413 PMCID: PMC10557059 DOI: 10.1021/acsorginorgau.3c00004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 10/10/2023]
Abstract
Nitrite-to-NO transformation is of prime importance due to its relevance in mammalian physiology. Although such a one-electron reductive transformation at various redox-active metal sites (e.g., Cu and Fe) has been illustrated previously, the reaction at the [ZnII] site in the presence of a sacrificial reductant like thiol has been reported to be sluggish and poorly understood. Reactivity of [(Bn3Tren)ZnII-ONO](ClO4) (1), a nitrite-bound model of the tripodal active site of carbonic anhydrase (CA), toward various organic probes, such as 4-tert-butylbenzylthiol (tBuBnSH), 2,4-di-tert-butylphenol (2,4-DTBP), and 1-fluoro-2,4-dinitrobenzene (F-DNB), reveals that the ONO-moiety in the [ZnII]-nitrite coordination motif of complex 1 acts as a mild electrophile. tBuBnSH reacts mildly with nitrite at a [ZnII] site to provide S-nitrosothiol tBuBnSNO prior to the release of NO in 10% yield, whereas the phenolic substrate 2,4-DTBP does not yield the analogous O-nitrite compound (ArONO). The presence of sulfane sulfur (S0) species such as elemental sulfur (S8) and organic polysulfides (tBuBnSnBntBu) during the reaction of tBuBnSH and [ZnII]-nitrite (1) assists the nitrite-to-NO conversion to provide NO yields of 65% (for S8) and 76% (for tBuBnSnBntBu). High-resolution mass spectrometry (HRMS) analyses on the reaction of [ZnII]-nitrite (1), tBuBnSH, and S8 depict the formation of zinc(II)-persulfide species [(Bn3Tren)ZnII-Sn-BntBu]+ (where n = 2, 3, 4, 5, and 6). Trapping of the persulfide species (tBuBnSS-) with 1-fluoro-2,4-dinitrobenzene (F-DNB) confirms its intermediacy. The significantly higher nucleophilicity of persulfide species (relative to thiol/thiolate) is proposed to facilitate the reaction with the mildly electrophilic [ZnII]-nitrite (1) complex. Complementary analyses, including multinuclear NMR, electrospray ionization-MS, UV-vis, and trapping of reactive S-species, provide mechanistic insights into the sulfane sulfur-assisted reactions between thiol and nitrite at the tripodal [ZnII]-site. These findings suggest the critical influential roles of various reactive sulfur species, such as sulfane sulfur and persulfides, in the nitrite-to-NO conversion.
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Affiliation(s)
- Tuhin Sahana
- School of Chemistry, Indian
Institute of Science Education and Research Thiruvananthapuram
(IISER-TVM), Thiruvananthapuram 695551, India
| | - Adwaith K. Valappil
- School of Chemistry, Indian
Institute of Science Education and Research Thiruvananthapuram
(IISER-TVM), Thiruvananthapuram 695551, India
| | - Anaswar S. P. R. Amma
- School of Chemistry, Indian
Institute of Science Education and Research Thiruvananthapuram
(IISER-TVM), Thiruvananthapuram 695551, India
| | - Subrata Kundu
- School of Chemistry, Indian
Institute of Science Education and Research Thiruvananthapuram
(IISER-TVM), Thiruvananthapuram 695551, India
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6
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Sgammato R, Van Brempt N, Aerts R, Van Doorslaer S, Dewilde S, Herrebout W, Johannessen C. Interaction of nitrite with ferric protoglobin from Methanosarcina acetivorans - an interesting model for spectroscopic studies of the haem-ligand interaction. Dalton Trans 2023; 52:2976-2987. [PMID: 36651272 DOI: 10.1039/d2dt03252j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Protoglobin from Methanosarcina acetivorans (MaPgb) is a dimeric globin belonging to the same lineage of the globin superfamily as globin-coupled sensors. A putative role in the scavenging of reactive nitrogen and oxygen species has been suggested as a possible adaptation mechanism of the host organism to different gaseous environments in the course of evolution. A combination of optical absorption, electronic circular dichroism (ECD), resonance Raman (rRaman), and electron paramagnetic resonance (EPR) reveal the unusual in vitro reaction of ferric MaPgb with nitrite. In contrast to other globins, a large excess of nitrite did not induce the formation of a nitriglobin form in MaPgb. Surprisingly, the addition of nitrite in mildly acidic pH led to the formation of a stable nitric-oxide ligated ferric form of the protein (MaPgb-NO). Furthermore, the 300-700 nm ECD spectrum of ferric MaPgb is for the first time reported and discussed, showing strong differences in the Soret and Q ellipticity compared to ferric myoglobin, in line with the unusually strongly ruffled haem group of MaPgb and the related quantum-mechanical admixture of the S = 5/2 and S = 3/2 state of its ferric form. The Soret and Q ellipticity change strongly upon formation of MaPgb-NO, revealing a significant effect of the nitric-oxide ligation on the haem group and pocket. The related changes in the asymmetric pyrrole half-ring stretching vibration modes observed in the rRaman spectra give experimental support to earlier theoretical models, in which an important role of the in-plane breathing modes of the haem was predicted for the stabilization of the binding of diatomic gases to MaPgb.
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Affiliation(s)
- Roberta Sgammato
- Laboratory of Molecular Spectroscopy, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
| | - Niels Van Brempt
- Laboratory of Biophysics and Biomedical Physics, Department of Chemistry, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium.,Laboratory of Protein Sciences, Proteomics and Epigenetic Signaling, Department of Biomedical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium
| | - Roy Aerts
- Laboratory of Molecular Spectroscopy, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
| | - Sabine Van Doorslaer
- Laboratory of Biophysics and Biomedical Physics, Department of Chemistry, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium
| | - Sylvia Dewilde
- Laboratory of Protein Sciences, Proteomics and Epigenetic Signaling, Department of Biomedical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium
| | - Wouter Herrebout
- Laboratory of Molecular Spectroscopy, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
| | - Christian Johannessen
- Laboratory of Molecular Spectroscopy, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
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7
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Singh L, Ranjan N. Highly Selective and Sensitive Detection of Nitrite Ion by an Unusual Nitration of a Fluorescent Benzimidazole. J Am Chem Soc 2023; 145:2745-2749. [PMID: 36716209 DOI: 10.1021/jacs.2c10850] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Nitrite (NO2-) is a physiologically significant anion having implications for cellular signaling. Here we report our serendipitous discovery of highly selective fluorescence-based nitrite sensing using a benzimidazole which stems from hitherto-unknown direct nitration of a benzimidazole using sodium nitrite. Using one- and two-dimensional NMR techniques, we elucidate the chemical structures of the new nitrated benzimidazoles and show differences in the nitration products using conventional nitration with nitric acid. We also show its utility in robust sensing of nitrite-containing samples.
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Affiliation(s)
- Lachhman Singh
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Raebareli, New Transit Campus, Lucknow 226002, Uttar Pradesh, India
| | - Nihar Ranjan
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Raebareli, New Transit Campus, Lucknow 226002, Uttar Pradesh, India
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8
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Henderson S, Bhardwaj K, Perugachi V, Espinoza-Montero P, Galligan JJ, Swain GM. In Vitro Monitoring of Nitric Oxide Release in the Mouse Colon Using a Boron-Doped Diamond Microelectrode Modified with Platinum Nanoparticles and Nafion. Anal Chem 2023; 95:1027-1037. [PMID: 36524968 DOI: 10.1021/acs.analchem.2c03731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This research reports on the preparation of a boron-doped diamond microelectrode modified with platinum nanoparticles and Nafion and its application for detecting nitric oxide (NO) in vitro in the mouse colon. Platinum nanoparticle deposition was performed potentiodynamically using a 2.0 mmol L-1 potassium hexachloroplatinate solution and cycling from -0.2 to 1.3 V vs Ag/AgCl at 0.01 V s-1 for 10 cycles. The Nafion overlayer was applied by immersion in a solution containing 2.5% (w/v) colloidal Nafion and drying overnight at 55 °C in a humid environment. The optimal microelectrode preparation conditions were chosen based on the electrode response for NO oxidation as well as rejection of nitrite (NO2-) oxidation, the main interferent in the electrochemical detection of NO in biological media. Detection figures of merit include a sensitivity of 16.7 ± 2.7 mA M-1 cm-2 (n = 3 electrodes), a detection limit of 0.5 μmol L-1 (S/N = 3), and an electrode response reproducibility of 2.5% (RSD). Electrical stimulation and continuous amperometry were used to measure NO release from myenteric ganglia in wild-type male and female mice in response to an increasing number of electrical stimuli to study nitrergic signaling in the colon. We also present preliminary data regarding the use of optogenetics to selectively stimulate nitrergic myenteric neurons using blue light stimulation with a goal of understanding how inhibitory neuromuscular signaling is involved in the myenteric plexus circuitry that controls intestinal motility.
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Affiliation(s)
- Skye Henderson
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Kirti Bhardwaj
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824, United States
| | - Victoria Perugachi
- Escuela Politécnica Nacional, Facultad de Ingeniería Química y Agroindustria, Quito 170143, Ecuador
| | | | - James J Galligan
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan 48824, United States.,The Neuroscience Program, Michigan State University, East Lansing, Michigan 48824, United States
| | - Greg M Swain
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States.,The Neuroscience Program, Michigan State University, East Lansing, Michigan 48824, United States
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9
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Miranda KM, Ridnour LA, Cheng RYS, Wink DA, Thomas DD. The Chemical Biology of NO that Regulates Oncogenic Signaling and Metabolism: NOS2 and Its Role in Inflammatory Disease. Crit Rev Oncog 2023; 28:27-45. [PMID: 37824385 DOI: 10.1615/critrevoncog.2023047302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Nitric oxide (NO) and the enzyme that synthesizes it, nitric oxide synthase 2 (NOS2), have emerged as key players in inflammation and cancer. Expression of NOS2 in tumors has been correlated both with positive outcomes and with poor prognoses. The chemistry of NO is the major determinate to the biological outcome and the concentration of NO, which can range over five orders of magnitude, is critical in determining which pathways are activated. It is the activation of specific oncogenic and immunological mechanisms that shape the outcome. The kinetics of specific reactions determine the mechanisms of action. In this review, the relevant reactions of NO and related species are discussed with respect to these oncogenic and immunological signals.
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Affiliation(s)
| | - Lisa A Ridnour
- Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, Maryland
| | - Robert Y S Cheng
- Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, Maryland
| | - David A Wink
- Cancer and Inflammation Program, Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, Maryland
| | - Douglas D Thomas
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois
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10
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Sun J, Zhang X, Wang X, Peng J, Song G, Di Y, Feng F, Wang S. Dithiol-Activated Bioorthogonal Chemistry for Endoplasmic Reticulum-Targeted Synergistic Chemophototherapy. Angew Chem Int Ed Engl 2022; 61:e202213765. [PMID: 36342403 DOI: 10.1002/anie.202213765] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Indexed: 11/09/2022]
Abstract
The controlled intracellular release of nitrite is still an unmet challenge due to the lack of bio-friendly donors, and the antitumor effect of nitrite is limited by its physiologically inert activity. Herein, we designed benzothiadiazole-based organic nitrite donors that are stable against bio-relevant species but selectively respond to dithiol species through SN Ar/intramolecular cyclization tandem reactions in the aqueous media. The bioorthogonal system was established to target the endoplasmic reticulum (ER) of liver cancer HepG2 cells. The nitrite and nonivamide were coupled to induce elevation of intracellular levels of calcium ions as well as reactive oxygen/nitrogen species, which resulted in ER stress and mitochondrial dysfunction. We demonstrated that a combination of photoactivation and "click to release" strategy could enhance antitumor effect in cellular level and show good potential for cancer precision therapy.
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Affiliation(s)
- Jian Sun
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, P. R. China.,Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Jiangsu, Nanjing, P. R. China
| | - Xiaoran Zhang
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Jiangsu, Nanjing, P. R. China
| | - Xia Wang
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Jiangsu, Nanjing, P. R. China
| | - Jinlei Peng
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Jiangsu, Nanjing, P. R. China
| | - Gang Song
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, P. R. China.,College of Chemistry, University of Chinese Academy of Sciences, 100190, Beijing, P. R. China
| | - Yufei Di
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, P. R. China.,College of Chemistry, University of Chinese Academy of Sciences, 100190, Beijing, P. R. China
| | - Fude Feng
- Department of Polymer Science & Engineering, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Jiangsu, Nanjing, P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, P. R. China.,College of Chemistry, University of Chinese Academy of Sciences, 100190, Beijing, P. R. China
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11
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Lucas SB, Duarte LM, Rezende KCA, Coltro WKT. Nitrite Determination in Environmental Water Samples Using Microchip Electrophoresis Coupled with Amperometric Detection. MICROMACHINES 2022; 13:1736. [PMID: 36296090 PMCID: PMC9610075 DOI: 10.3390/mi13101736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/07/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Nitrite is considered an important target analyte for environmental monitoring. In water resources, nitrite is the result of the nitrogen cycle and the leaching processes of pesticides based on nitrogenous compounds. A high concentration of nitrite can be associated with intoxication processes and metabolic disorders in humans. The present study describes the development of a portable analytical methodology based on microchip electrophoresis coupled with amperometric detection for the determination of nitrite in environmental water samples. Electrophoretic and detection conditions were optimized, and the best separations were achieved within 60 s by employing a mixture of 30 mmol L-1 lactic acid and 15 mmol L-1 histidine (pH = 3.8) as a running buffer applying 0.7 V to the working electrode (versus Pt) for amperometric measurements. The developed methodology revealed a satisfactory linear behavior in the concentration range between 20 and 80 μmolL-1 (R2 = 0.999) with a limit of detection of 1.3 μmolL-1. The nitrite concentration was determined in five water samples and the achieved values ranged from (28.7 ± 1.6) to (67.1 ± 0.5) µmol L-1. The data showed that using the proposed methodology revealed satisfactory recovery values (83.5-103.8%) and is in good agreement with the reference technique. Due to its low sample consumption, portability potential, high analytical frequency, and instrumental simplicity, the developed methodology may be considered a promising strategy to monitor and quantitatively determine nitrite in environmental samples.
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Affiliation(s)
| | - Lucas Mattos Duarte
- Instituto de Química, Universidade Federal de Goiás, Goiânia 74690-900, GO, Brazil
- Instituto de Química, Departamento de Química Analítica, Universidade Federal Fluminense, Niterói 24020-141, RJ, Brazil
| | | | - Wendell Karlos Tomazelli Coltro
- Instituto de Química, Universidade Federal de Goiás, Goiânia 74690-900, GO, Brazil
- Instituto Nacional de Ciência e Tecnologia de Bioanalítica (INCTBio), Campinas 13083-861, SP, Brazil
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12
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Chronic High-Altitude Hypoxia Alters Iron and Nitric Oxide Homeostasis in Fetal and Maternal Sheep Blood and Aorta. Antioxidants (Basel) 2022; 11:antiox11091821. [PMID: 36139895 PMCID: PMC9495375 DOI: 10.3390/antiox11091821] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/09/2022] [Accepted: 09/12/2022] [Indexed: 11/16/2022] Open
Abstract
The mammalian fetus thrives at oxygen tensions much lower than those of adults. Gestation at high altitude superimposes hypoxic stresses on the fetus resulting in increased erythropoiesis. We hypothesized that chronic hypoxia at high altitude alters the homeostasis of iron and bioactive nitric oxide metabolites (NOx) in gestation. To test for this, electron paramagnetic resonance was used to provide unique measurements of iron, metalloproteins, and free radicals in the blood and aorta of fetal and maternal sheep from either high or low altitudes (3801 or 300 m). Using ozone-based chemiluminescence with selectivity for various NOx species, we determined the NOx levels in these samples immediately after collection. These experiments demonstrated a systemic redistribution of iron in high altitude fetuses as manifested by a decrease in both chelatable and total iron in the aorta and an increase in non-transferrin bound iron and total iron in plasma. Likewise, high altitude altered the redox status diversely in fetal blood and aorta. This study also found significant increases in blood and aortic tissue NOx in fetuses and mothers at high altitude. In addition, gradients in NOx concentrations observed between fetus and mother, umbilical artery and vein, and plasma and RBCs demonstrated complex dynamic homeostasis of NOx among these circulatory compartments, such as placental generation and efflux as well as fetal consumption of iron-nitrosyls in RBCs, probably HbNO. In conclusion, these results may suggest the utilization of iron from non-hematopoietic tissues iron for erythropoiesis in the fetus and increased NO bioavailability in response to chronic hypoxic stress at high altitude during gestation.
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13
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Enhancement of Nitric Oxide Bioavailability by Modulation of Cutaneous Nitric Oxide Stores. Biomedicines 2022; 10:biomedicines10092124. [PMID: 36140225 PMCID: PMC9496039 DOI: 10.3390/biomedicines10092124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/22/2022] [Accepted: 08/26/2022] [Indexed: 11/17/2022] Open
Abstract
The generation of nitric oxide (NO) in the skin plays a critical role in wound healing and the response to several stimuli, such as UV exposure, heat, infection, and inflammation. Furthermore, in the human body, NO is involved in vascular homeostasis and the regulation of blood pressure. Physiologically, a family of enzymes termed nitric oxide synthases (NOS) generates NO. In addition, there are many methods of non-enzymatic/NOS-independent NO generation, e.g., the reduction of NO derivates (NODs) such as nitrite, nitrate, and nitrosylated proteins under certain conditions. The skin is the largest and heaviest human organ and contains a comparatively high concentration of these NODs; therefore, it represents a promising target for many therapeutic strategies for NO-dependent pathological conditions. In this review, we give an overview of how the cutaneous NOD stores can be targeted and modulated, leading to a further accumulation of NO-related compounds and/or the local and systemic release of bioactive NO, and eventually, NO-related physiological effects with a potential therapeutical use for diseases such as hypertension, disturbed microcirculation, impaired wound healing, and skin infections.
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14
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Oue A, Iimura Y, Shinagawa A, Miyakoshi Y, Ota M. Acute dietary nitrate supplementation does not change venous volume and compliance in healthy young adults. Am J Physiol Regul Integr Comp Physiol 2022; 323:R331-R339. [PMID: 35816716 DOI: 10.1152/ajpregu.00083.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this randomized single-blind, placebo-controlled, crossover study, we investigated the influence of inorganic nitrate (NO3-) supplementation on venous volume and compliance in the resting forearm and calf. Twenty healthy young adults were assigned to receive an NO3--rich beverage (beetroot juice [BRJ]: 140 mL; ~8 mmol NO3-) or an NO3¯-depleted control beverage (prune juice [CON]: 166 mL; < 0.01 mmol NO3-). Two hours after consuming the allocated beverage, each participant rested in the supine position for 20 min. Cuffs were then placed around the right upper arm and right thigh, inflated to 60 mmHg for 8 min, and then decreased to 0 mmHg at a rate of 1 mmHg/s. During inflation and deflation of cuff pressure, changes in venous volume in the forearm and calf were measured by venous occlusion plethysmography. Venous compliance was calculated as the numerical derivative of the cuff pressure‒venous volume curve in the limbs. The plasma NO3- concentration was elevated by intake of BRJ (before, 15.5 ± 5.8 µM; after, 572.0 ± 116.1 µM, P < 0.05) but not by CON (before, 14.8 ± 7.2 µM; after, 15.3 ± 7.4 µM, P > 0.05). On the other hand, there was no significant difference in venous volume or compliance in the forearm or calf between BRJ and CON. These findings suggest that although acute inorganic NO3- supplementation may enhance the activity of nitric oxide (NO) via NO3- → nitrite → NO pathway, it does not influence venous volume or compliance in the limbs in healthy young adults.
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Affiliation(s)
- Anna Oue
- Faculty of Food and Nutritional Sciences, Toyo University, Gunma, Japan
| | - Yasuhiro Iimura
- Graduate School of Food and Nutritional Sciences, Toyo University, Gunma, Japan
| | - Akiho Shinagawa
- Graduate School of Food and Nutritional Sciences, Toyo University, Gunma, Japan
| | - Yuichi Miyakoshi
- Faculty of Food and Nutritional Sciences, Toyo University, Gunma, Japan
| | - Masako Ota
- Faculty of Food and Nutritional Sciences, Toyo University, Gunma, Japan
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15
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The Evolution of Nitric Oxide Function: From Reactivity in the Prebiotic Earth to Examples of Biological Roles and Therapeutic Applications. Antioxidants (Basel) 2022; 11:antiox11071222. [PMID: 35883712 PMCID: PMC9311577 DOI: 10.3390/antiox11071222] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/14/2022] [Accepted: 06/16/2022] [Indexed: 12/01/2022] Open
Abstract
Nitric oxide was once considered to be of marginal interest to the biological sciences and medicine; however, there is now wide recognition, but not yet a comprehensive understanding, of its functions and effects. NO is a reactive, toxic free radical with numerous biological targets, especially metal ions. However, NO and its reaction products also play key roles as reductant and oxidant in biological redox processes, in signal transduction, immunity and infection, as well as other roles. Consequently, it can be sensed, metabolized and modified in biological systems. Here, we present a brief overview of the chemistry and biology of NO—in particular, its origins in geological time and in contemporary biology, its toxic consequences and its critical biological functions. Given that NO, with its intrinsic reactivity, appeared in the early Earth’s atmosphere before the evolution of complex lifeforms, we speculate that the potential for toxicity preceded biological function. To examine this hypothesis, we consider the nature of non-biological and biological targets of NO, the evolution of biological mechanisms for NO detoxification, and how living organisms generate this multifunctional gas.
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16
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Kaliszuk SJ, Morgan NI, Ayers TN, Sparacino Watkins CE, DeMartino AW, Bocian K, Ragireddy V, Tong Q, Tejero J. Regulation of nitrite reductase and lipid binding properties of cytoglobin by surface and distal histidine mutations. Nitric Oxide 2022; 125-126:12-22. [PMID: 35667547 PMCID: PMC9283305 DOI: 10.1016/j.niox.2022.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/21/2022] [Accepted: 06/01/2022] [Indexed: 12/30/2022]
Abstract
Cytoglobin is a hemoprotein widely expressed in fibroblasts and related cell lineages with yet undefined physiological function. Cytoglobin, as other heme proteins, can reduce nitrite to nitric oxide (NO) providing a route to generate NO in vivo in low oxygen conditions. In addition, cytoglobin can also bind lipids such as oleic acid and cardiolipin with high affinity. These two processes are potentially relevant to cytoglobin function. Little is known about how specific amino acids contribute to nitrite reduction and lipid binding. Here we investigate the role of the distal histidine His81 (E7) and several surface residues on the regulation of nitrite reduction and lipid binding. We observe that the replacement of His81 (E7) greatly increases heme reactivity towards nitrite, with nitrite reduction rate constants of up to 1100 M-1s-1 for the His81Ala mutant. His81 (E7) mutation causes a small decrease in lipid binding affinity, however experiments on the presence of imidazole indicate that His81 (E7) does not compete with the lipid for the binding site. Mutations of the surface residues Arg84 and Lys116 largely impair lipid binding. Our results suggest that dissociation of His81 (E7) from the heme mediates the formation of a hydrophobic cavity in the proximal heme side that can accommodate the lipid, with important contributions of the hydrophobic patch around residues Thr91, Val105, and Leu108, whereas the positive charges from Arg84 and Lys116 stabilize the carboxyl group of the fatty acid. Gain and loss-of-function mutations described here can serve as tools to study in vivo the physiological role of these putative cytoglobin functions.
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Affiliation(s)
- Stefan J Kaliszuk
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Natasha I Morgan
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Taylor N Ayers
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Courtney E Sparacino Watkins
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, 15261, USA; Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Anthony W DeMartino
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Kaitlin Bocian
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Venkata Ragireddy
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Qin Tong
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Jesús Tejero
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, 15261, USA; Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, 15261, USA; Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, 15260, USA; Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA, 15261, USA.
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17
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Piacenza L, Zeida A, Trujillo M, Radi R. The superoxide radical switch in the biology of nitric oxide and peroxynitrite. Physiol Rev 2022; 102:1881-1906. [PMID: 35605280 DOI: 10.1152/physrev.00005.2022] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Lucìa Piacenza
- Departamento de Bioquímica, Facultad de Medicina; Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Uruguay
| | - Ari Zeida
- Departamento de Bioquímica, Facultad de Medicina; Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay
| | - Madia Trujillo
- Departamento de Bioquímica, Facultad de Medicina; Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay
| | - Rafael Radi
- Departamento de Bioquímica, Facultad de Medicina; Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay
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18
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Park YJ, Peñas-Defrutos MN, Drummond MJ, Gordon Z, Kelly OR, Garvey IJ, Gullett KL, García-Melchor M, Fout AR. Secondary Coordination Sphere Influences the Formation of Fe(III)-O or Fe(III)-OH in Nitrite Reduction: A Synthetic and Computational Study. Inorg Chem 2022; 61:8182-8192. [PMID: 35580163 DOI: 10.1021/acs.inorgchem.2c00462] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reduction of nitrite (NO2-) to generate nitric oxide (NO) is a significant area of research due to their roles in the global nitrogen cycle. Here, we describe various modifications of the tris(5-cyclohexyliminopyrrol-2-ylmethyl)amine H3[N(piR)3] ligand where the steric bulk and acidity of the secondary coordination sphere were explored in the non-heme iron system for nitrite reduction. The cyclohexyl and 2,4,6-trimethylphenyl variants of the ligand were used to probe the mechanism of nitrite reduction. While previously stoichiometric addition of nitrite to the iron(II)-species generated an iron(III)-oxo complex, changing the secondary coordination sphere to mesityl resulted in an iron(III)-hydroxo complex. Subsequent addition of an electron and two protons led to the release of water and regeneration of the starting iron(II) catalyst. This sequence mirrored the proposed mechanism of nitrite reduction in biological systems, where the distal histidine residue shuttles protons to the active site. Computational studies aimed at interrogating the dissimilar behavior of the cyclohexyl and mesityl ligand systems resulting in Fe(III)-oxo and Fe(III)-hydroxo complexes, respectively, shed light on the key role of H-bonds involving the secondary coordination sphere in the relative stability of these species.
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Affiliation(s)
- Yun Ji Park
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Marconi N Peñas-Defrutos
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin 2, Ireland
| | - Michael J Drummond
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Zachary Gordon
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Oscar R Kelly
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin 2, Ireland
| | - Ian J Garvey
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Kelly L Gullett
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Max García-Melchor
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin 2, Ireland
| | - Alison R Fout
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
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19
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Giordano D, Verde C, Corti P. Nitric Oxide Production and Regulation in the Teleost Cardiovascular System. Antioxidants (Basel) 2022; 11:antiox11050957. [PMID: 35624821 PMCID: PMC9137985 DOI: 10.3390/antiox11050957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 01/08/2023] Open
Abstract
Nitric Oxide (NO) is a free radical with numerous critical signaling roles in vertebrate physiology. Similar to mammals, in the teleost system the generation of sufficient amounts of NO is critical for the physiological function of the cardiovascular system. At the same time, NO amounts are strictly controlled and kept within basal levels to protect cells from NO toxicity. Changes in oxygen tension highly influence NO bioavailability and can modulate the mechanisms involved in maintaining the NO balance. While NO production and signaling appears to have general similarities with mammalian systems, the wide range of environmental adaptations made by fish, particularly with regards to differing oxygen availabilities in aquatic habitats, creates a foundation for a variety of in vivo models characterized by different implications of NO production and signaling. In this review, we present the biology of NO in the teleost cardiovascular system and summarize the mechanisms of NO production and signaling with a special emphasis on the role of globin proteins in NO metabolism.
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Affiliation(s)
- Daniela Giordano
- Institute of Biosciences and BioResources (IBBR), National Research Council (CNR), Via Pietro Castellino 111, 80131 Napoli, Italy; (D.G.); (C.V.)
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn (SZN), Villa Comunale, 80121 Napoli, Italy
| | - Cinzia Verde
- Institute of Biosciences and BioResources (IBBR), National Research Council (CNR), Via Pietro Castellino 111, 80131 Napoli, Italy; (D.G.); (C.V.)
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn (SZN), Villa Comunale, 80121 Napoli, Italy
| | - Paola Corti
- Heart, Lung, Blood, and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15213, USA
- Division of Cardiology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
- Correspondence:
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20
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Gajecki D, Gawryś J, Szahidewicz-Krupska E, Doroszko A. Role of Erythrocytes in Nitric Oxide Metabolism and Paracrine Regulation of Endothelial Function. Antioxidants (Basel) 2022; 11:antiox11050943. [PMID: 35624807 PMCID: PMC9137828 DOI: 10.3390/antiox11050943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/05/2022] [Accepted: 05/08/2022] [Indexed: 01/27/2023] Open
Abstract
Emerging studies provide new data shedding some light on the complex and pivotal role of red blood cells (RBCs) in nitric oxide (NO) metabolism and paracrine regulation of endothelial function. NO is involved in the regulation of vasodilatation, platelet aggregation, inflammation, hypoxic adaptation, and oxidative stress. Even though tremendous knowledge about NO metabolism has been collected, the exact RBCs’ status still requires evaluation. This paper summarizes the actual knowledge regarding the role of erythrocytes as a mobile depot of amino acids necessary for NO biotransformation. Moreover, the complex regulation of RBCs’ translocases is presented with a particular focus on cationic amino acid transporters (CATs) responsible for the NO substrates and derivatives transport. The main part demonstrates the intraerythrocytic metabolism of L-arginine with its regulation by reactive oxygen species and arginase activity. Additionally, the process of nitrite and nitrate turnover was demonstrated to be another stable source of NO, with its reduction by xanthine oxidoreductase or hemoglobin. Additional function of hemoglobin in NO synthesis and its subsequent stabilization in steady intermediates is also discussed. Furthermore, RBCs regulate the vascular tone by releasing ATP, inducing smooth muscle cell relaxation, and decreasing platelet aggregation. Erythrocytes and intraerythrocytic NO metabolism are also responsible for the maintenance of normotension. Hence, RBCs became a promising new therapeutic target in restoring NO homeostasis in cardiovascular disorders.
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21
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Miller GD, Nesbit BA, Kim-Shapiro DB, Basu S, Berry MJ. Effect of Vitamin C and Protein Supplementation on Plasma Nitrate and Nitrite Response following Consumption of Beetroot Juice. Nutrients 2022; 14:1880. [PMID: 35565845 PMCID: PMC9100995 DOI: 10.3390/nu14091880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 04/26/2022] [Accepted: 04/26/2022] [Indexed: 11/16/2022] Open
Abstract
Beetroot juice is a food high in nitrate and is associated with cardiometabolic health benefits and enhanced exercise performance through the production of nitric oxide in the nitrate−nitrite−nitric oxide pathway. Since various food components influence this pathway, the aim of this trial was to study the effect of beetroot juice alone and in conjunction with vitamin C or protein on the acute response to plasma nitrate and nitrite levels in healthy middle- to older-aged adults. In this cross-over trial, each participant received, in a randomized order, a single dose of Beet It Sport® alone; Beet It Sport®, plus a 200 mg vitamin C supplement; and Beet It Sport® plus 15 g of whey protein. Plasma levels of nitrate and nitrite were determined prior to and at 1 and 3 h after intervention. Log plasma nitrate and nitrite was calculated to obtain data that were normally distributed, and these data were analyzed using two-way within-factors ANOVA, with time and treatment as the independent factors. There were no statistically significant differences for log plasma nitrate (p = 0.308) or log plasma nitrite (p = 0.391) values across treatments. Log plasma nitrate increased significantly from pre-consumption levels after 1 h (p < 0.001) and 3 h (p < 0.001), but plasma nitrate was lower at 3 h than 1 h (p < 0.001). Log plasma nitrite increased from pre to 1 h (p < 0.001) and 3 h (p < 0.001) with log values at 3 h higher than at 1 h (p = 0.003). In this cohort, we observed no differences in log plasma nitrate and nitrite at 1 h and 3 h after co-ingesting beetroot juice with vitamin C or a whey protein supplement compared to beetroot juice alone. Further research needs to be undertaken to expand the blood-sampling time-frame and to examine factors that may influence the kinetics of the plasma nitrate to nitrite efficacy, such as differences in fluid volume and osmolarity between treatments employed.
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Affiliation(s)
- Gary D. Miller
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC 27109, USA;
- Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, USA; (B.A.N.); (D.B.K.-S.); (S.B.)
| | - Beverly A. Nesbit
- Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, USA; (B.A.N.); (D.B.K.-S.); (S.B.)
| | - Daniel B. Kim-Shapiro
- Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, USA; (B.A.N.); (D.B.K.-S.); (S.B.)
- Department of Physics, Wake Forest University, Winston-Salem, NC 27109, USA
| | - Swati Basu
- Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, USA; (B.A.N.); (D.B.K.-S.); (S.B.)
- Department of Physics, Wake Forest University, Winston-Salem, NC 27109, USA
| | - Michael J. Berry
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC 27109, USA;
- Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, USA; (B.A.N.); (D.B.K.-S.); (S.B.)
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22
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Xie H, Gunawardana VWL, Finnegan TJ, Xie W, Badjić JD. Picking on Carbonate: Kinetic Selectivity in the Encapsulation of Anions. Angew Chem Int Ed Engl 2022; 61:e202116518. [PMID: 35038355 DOI: 10.1002/anie.202116518] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Indexed: 12/21/2022]
Abstract
Supramolecular hosts bind to inorganic anions at a fast rate and select them in proportion with thermodynamic stability of the corresponding [anion⊂host] complexes, forming in a reversible manner. In this study, we describe the action of hexapodal capsule 1 and its remarkable ability to select anions based on a large span of rates by which they enter this host. The thermodynamic affinity of 1 toward eighteen anions extends over eight orders of magnitude (0<Ka <108 M-1 ; 1 H NMR spectroscopy). The capsule would retain CO3 2- (Ka =107 M-1 ) for hours in the presence of eleven competing anions, including stronger binding SO4 2- , HAsO4 2- and HPO4 2- (Ka =107 -108 M-1 ). The observed selection resulted from 1 possessing narrow apertures (ca. 3×6 Å) comparable in size to anions (d=3.5-7.1 Å) slowing down the encapsulation to last from seconds to days. The unorthodox mode of action of 1 sets the stage for creating hosts that pick anions by their ability to access the host.
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Affiliation(s)
- Han Xie
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | | | - Tyler J Finnegan
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - William Xie
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Jovica D Badjić
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
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23
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Carbon dots as Reactive Nitrogen Species nanosensors. Anal Chim Acta 2022; 1202:339654. [DOI: 10.1016/j.aca.2022.339654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 11/15/2022]
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24
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Nitrite Concentration in the Striated Muscles Is Reversely Related to Myoglobin and Mitochondrial Proteins Content in Rats. Int J Mol Sci 2022; 23:ijms23052686. [PMID: 35269826 PMCID: PMC8910716 DOI: 10.3390/ijms23052686] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 02/21/2022] [Accepted: 02/27/2022] [Indexed: 12/12/2022] Open
Abstract
Skeletal muscles are an important reservoir of nitric oxide (NO•) stored in the form of nitrite [NO2−] and nitrate [NO3−] (NOx). Nitrite, which can be reduced to NO• under hypoxic and acidotic conditions, is considered a physiologically relevant, direct source of bioactive NO•. The aim of the present study was to determine the basal levels of NOx in striated muscles (including rat heart and locomotory muscles) with varied contents of tissue nitrite reductases, such as myoglobin and mitochondrial electron transport chain proteins (ETC-proteins). Muscle NOx was determined using a high-performance liquid chromatography-based method. Muscle proteins were evaluated using western-immunoblotting. We found that oxidative muscles with a higher content of ETC-proteins and myoglobin (such as the heart and slow-twitch locomotory muscles) have lower [NO2−] compared to fast-twitch muscles with a lower content of those proteins. The muscle type had no observed effect on the [NO3−]. Our results demonstrated that fast-twitch muscles possess greater potential to generate NO• via nitrite reduction than slow-twitch muscles and the heart. This property might be of special importance for fast skeletal muscles during strenuous exercise and/or hypoxia since it might support muscle blood flow via additional NO• provision (acidic/hypoxic vasodilation) and delay muscle fatigue.
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25
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Lamont EI, Lee M, Burgdorf D, Ibsen C, McQualter J, Sarhan R, Thompson O, Schulze SR. Mocs1 ( Molybdenum cofactor synthesis 1) may contribute to lifespan extension in Drosophila. MICROPUBLICATION BIOLOGY 2022; 2022:10.17912/micropub.biology.000517. [PMID: 35098048 PMCID: PMC8790633 DOI: 10.17912/micropub.biology.000517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 01/07/2022] [Accepted: 01/18/2022] [Indexed: 11/05/2022]
Abstract
While evaluating the effect on lifespan of decreased ribosomal protein (Rp) expression in Drosophila, we discovered a potential function in the same process for the Molybdenum cofactor synthesis 1 (Mocs1) gene. We utilized the UAS-GAL4 inducible system, by crossing tissue-specific GAL4 drivers to the Harvard Drosophila Transgenic RNAi Project (TrIP) responder lines for Rp gene knockdown. We also employed a negative control that knocked down a gene unrelated to Drosophila (GAL4). Relative to the genetic background in which no driven transgenes were present, lifespan was significantly lengthened in females, both for Rp knockdown and the negative GAL4 control. We reasoned that the Mocs1 gene, located immediately downstream of the integration site on the third chromosome where all the TrIP responders are targeted might be responsible for the lifespan effects observed, due to the potential for upregulation using the UAS-GAL4 system. We repeated the lifespan experiment using an enhancer trap in the same location as the TrIP transgenes, and found that lifespan was significantly lengthened in females that possessed both the driver and responder, relative to controls, implicating Mocs1 in the biology of aging.
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Affiliation(s)
- Eleanor I. Lamont
- Department of Biology, Western Washington University, Bellingham, WA, 98225, USA
| | - Michael Lee
- Department of Biology, Western Washington University, Bellingham, WA, 98225, USA
| | - David Burgdorf
- Department of Biology, Western Washington University, Bellingham, WA, 98225, USA
| | - Camille Ibsen
- Department of Biology, Western Washington University, Bellingham, WA, 98225, USA
| | - Jazmyne McQualter
- Department of Biology, Western Washington University, Bellingham, WA, 98225, USA
| | - Ryan Sarhan
- Department of Biology, Western Washington University, Bellingham, WA, 98225, USA
| | - Olivia Thompson
- Department of Biology, Western Washington University, Bellingham, WA, 98225, USA
| | - Sandra R Schulze
- Department of Biology, Western Washington University, Bellingham, WA, 98225, USA,
Correspondence to: Sandra R Schulze ()
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Badjic JD, Xie H, Gunawardana VWL, Finnegan TJ, Xie W, Badjić JD. Picking on Carbonate: Kinetic Selectivity in the Encapsulation of Anions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jovica D Badjic
- Ohio State University Department of Chemistry 100 W. 18th Avenue 43210 Columbus UNITED STATES
| | - Han Xie
- The Ohio State University Chemistry and Biochemistry UNITED STATES
| | | | | | - William Xie
- The Ohio State University Chemistry and Biochemistry UNITED STATES
| | - Jovica D. Badjić
- The Ohio State University Chemistry and Biochemistry UNITED STATES
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Kadach S, Piknova B, Black MI, Park JW, Wylie LJ, Stoyanov Z, Thomas SM, McMahon NF, Vanhatalo A, Schechter AN, Jones AM. Time course of human skeletal muscle nitrate and nitrite concentration changes following dietary nitrate ingestion. Nitric Oxide 2022; 121:1-10. [PMID: 35032643 PMCID: PMC8860874 DOI: 10.1016/j.niox.2022.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/08/2022] [Accepted: 01/10/2022] [Indexed: 12/11/2022]
Abstract
Dietary nitrate (NO3−) ingestion can be beneficial for health and exercise performance. Recently, based on animal and limited human studies, a skeletal muscle NO3− reservoir has been suggested to be important in whole body nitric oxide (NO) homeostasis. The purpose of this study was to determine the time course of changes in human skeletal muscle NO3− concentration ([NO3− ) following the ingestion of dietary NO3−. Sixteen participants were allocated to either an experimental group (NIT: n = 11) which consumed a bolus of ~1300 mg (12.8 mmol) potassium nitrate (KNO3), or a placebo group (PLA: n = 5) which consumed a bolus of potassium chloride (KCl). Biological samples (muscle (vastus lateralis), blood, saliva and urine) were collected shortly before NIT or PLA ingestion and at intervals over the course of the subsequent 24 h. At baseline, no differences were observed for muscle [NO3−] and [NO2−] between NIT and PLA (P > 0.05). In PLA, there were no changes in muscle [NO3−] or [NO2−] over time. In NIT, muscle [NO3−] was significantly elevated above baseline (54 ± 29 nmol/g) at 0.5 h, reached a peak at 3 h (181 ± 128 nmol/g), and was not different to baseline from 9 h onwards (P > 0.05). Muscle [NO2−] did not change significantly over time. Following ingestion of a bolus of dietary NO3− skeletal muscle [NO3−] increases rapidly, reaches a peak at ~3 h and subsequently declines towards baseline values. Following dietary NO3− ingestion, human m. vastus lateralis [NO3−] expressed a slightly delayed pharmacokinetic profile compared to plasma [NO3−].
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Affiliation(s)
- Stefan Kadach
- University of Exeter, College of Life and Environmental Sciences, St Luke's Campus, University of Exeter, Exeter, EX1 2LU, UK
| | - Barbora Piknova
- Molecular Medicine Branch, NIDDK, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Matthew I Black
- University of Exeter, College of Life and Environmental Sciences, St Luke's Campus, University of Exeter, Exeter, EX1 2LU, UK
| | - Ji Won Park
- Molecular Medicine Branch, NIDDK, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Lee J Wylie
- University of Exeter, College of Life and Environmental Sciences, St Luke's Campus, University of Exeter, Exeter, EX1 2LU, UK
| | - Zdravko Stoyanov
- University of Exeter, College of Life and Environmental Sciences, St Luke's Campus, University of Exeter, Exeter, EX1 2LU, UK
| | - Samantha M Thomas
- Molecular Medicine Branch, NIDDK, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Nicholas F McMahon
- University of Queensland, School of Human Movement and Nutrition Sciences, University of Queensland, St Lucia, QLD, 4072, Australia
| | - Anni Vanhatalo
- University of Exeter, College of Life and Environmental Sciences, St Luke's Campus, University of Exeter, Exeter, EX1 2LU, UK
| | - Alan N Schechter
- Molecular Medicine Branch, NIDDK, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Andrew M Jones
- University of Exeter, College of Life and Environmental Sciences, St Luke's Campus, University of Exeter, Exeter, EX1 2LU, UK.
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White matter damage as a consequence of vascular dysfunction in a spontaneous mouse model of chronic mild chronic hypoperfusion with eNOS deficiency. Mol Psychiatry 2022; 27:4754-4769. [PMID: 35948662 PMCID: PMC9734049 DOI: 10.1038/s41380-022-01701-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 06/20/2022] [Accepted: 07/01/2022] [Indexed: 12/14/2022]
Abstract
Vascular cognitive impairment and dementia (VCID) is the second most common form of dementia after Alzheimer's disease (AD). Currently, the mechanistic insights into the evolution and progression of VCID remain elusive. White matter change represents an invariant feature. Compelling clinical neuroimaging and pathological evidence suggest a link between white matter changes and neurodegeneration. Our prior study detected hypoperfused lesions in mice with partial deficiency of endothelial nitric oxide (eNOS) at very young age, precisely matching to those hypoperfused areas identified in preclinical AD patients. White matter tracts are particularly susceptible to the vascular damage induced by chronic hypoperfusion. Using immunohistochemistry, we detected severe demyelination in the middle-aged eNOS-deficient mice. The demyelinated areas were confined to cortical and subcortical areas including the corpus callosum and hippocampus. The intensity of demyelination correlated with behavioral deficits of gait and associative recognition memory performances. By Evans blue angiography, we detected blood-brain barrier (BBB) leakage as another early pathological change affecting frontal and parietal cortex in eNOS-deficient mice. Sodium nitrate fortified drinking water provided to young and middle-aged eNOS-deficient mice completely prevented non-perfusion, BBB leakage, and white matter pathology, indicating that impaired endothelium-derived NO signaling may have caused these pathological events. Furthermore, genome-wide transcriptomic analysis revealed altered gene clusters most related to mitochondrial respiratory pathways selectively in the white matter of young eNOS-deficient mice. Using eNOS-deficient mice, we identified BBB breakdown and hypoperfusion as the two earliest pathological events, resulting from insufficient vascular NO signaling. We speculate that the compromised BBB and mild chronic hypoperfusion trigger vascular damage, along with oxidative stress and astrogliosis, accounting for the white matter pathological changes in the eNOS-deficient mouse model. We conclude that eNOS-deficient mice represent an ideal spontaneous evolving model for studying the earliest events leading to white matter changes, which will be instrumental to future therapeutic testing of drug candidates and for targeting novel/specific vascular mechanisms contributing to VCID and AD.
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Chand K, Chu YC, Wang TW, Kao CL, Lin YF, Tsai ML, Hsu SC. Nitric oxide generation study of unsymmetrical β-diketiminato copper(II) nitrite complexes. Dalton Trans 2022; 51:3485-3496. [DOI: 10.1039/d1dt03711k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The β-diketiminato copper(II) L1CuCl−L4CuCl and their nitrite complexes L1Cu(O2N) and L2Cu(O2N) has been synthesized and characterized. The X-ray structure of the L1CuCl−L4CuCl complexes clearly indicates towards the mononuclear structure with...
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30
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Piknova B, Schechter AN, Park JW, Vanhatalo A, Jones AM. Skeletal Muscle Nitrate as a Regulator of Systemic Nitric Oxide Homeostasis. Exerc Sport Sci Rev 2021; 50:2-13. [PMID: 34669624 DOI: 10.1249/jes.0000000000000272] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ABSTRACT Non-enzymatic nitric oxide (NO) generation via the reduction of nitrate and nitrite ions, along with remarkably high levels of nitrate ions in skeletal muscle, have been recently described. Skeletal muscle nitrate storage may be critical for maintenance of NO homeostasis in healthy ageing and nitrate supplementation may be useful for treatment of specific pathophysiologies as well as enhancing normal functions.
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Affiliation(s)
- Barbora Piknova
- Molecular Medicine Branch, NIDDK, National Institutes of Health,Bethesda, MD 20892, U.S. Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
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Novel gene similar to nitrite reductase (NO forming) plays potentially important role in the latency of tuberculosis. Sci Rep 2021; 11:19813. [PMID: 34615967 PMCID: PMC8494734 DOI: 10.1038/s41598-021-99346-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 08/30/2021] [Indexed: 12/03/2022] Open
Abstract
The development of the latent phenotype of Mycobacterium tuberculosis (Mtb) in the human lungs is the major hurdle to eradicate Tuberculosis. We recently reported that exposure to nitrite (10 mM) for six days under in vitro aerobic conditions completely transforms the bacilli into a viable but non-cultivable phenotype. Herein, we show that nitrite (beyond 5 mM) treated Mtb produces nitric oxide (NO) within the cell in a dose-dependent manner. Our search for the conserved sequence of NO synthesizing enzyme in the bacterial system identified MRA2164 and MRA0854 genes, of which the former was found to be significantly up regulated after nitrite exposure. In addition, the purified recombinant MRA2164 protein shows significant nitrite dependent NO synthesizing activity. The knockdown of the MRA2164 gene at mRNA level expression resulted in a significantly reduced NO level compared to the wild type bacilli with a simultaneous return of its replicative capability. Therefore, this study first time reports that nitrite induces dormancy in Mtb cells through induced expression of the MRA2164 gene and productions of NO as a mechanism for maintaining non-replicative stage in Mtb. This observation could help to control the Tuberculosis disease, especially the latent phenotype of the bacilli.
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32
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Keller TCS, Lechauve C, Keller AS, Brooks S, Weiss MJ, Columbus L, Ackerman HC, Cortese-Krott MM, Isakson BE. The role of globins in cardiovascular physiology. Physiol Rev 2021; 102:859-892. [PMID: 34486392 DOI: 10.1152/physrev.00037.2020] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Globin proteins exist in every cell type of the vasculature, from erythrocytes to endothelial cells, vascular smooth muscle cells, and peripheral nerve cells. Many globin subtypes are also expressed in muscle tissues (including cardiac and skeletal muscle), in other organ-specific cell types, and in cells of the central nervous system. The ability of each of these globins to interact with molecular oxygen (O2) and nitric oxide (NO) is preserved across these contexts. Endothelial α-globin is an example of extra-erythrocytic globin expression. Other globins, including myoglobin, cytoglobin, and neuroglobin are observed in other vascular tissues. Myoglobin is observed primarily in skeletal muscle and smooth muscle cells surrounding the aorta or other large arteries. Cytoglobin is found in vascular smooth muscle but can also be expressed in non-vascular cell types, especially in oxidative stress conditions after ischemic insult. Neuroglobin was first observed in neuronal cells, and its expression appears to be restricted mainly to the central and peripheral nervous systems. Brain and central nervous system neurons expressing neuroglobin are positioned close to many arteries within the brain parenchyma and can control smooth muscle contraction and, thus, tissue perfusion and vascular reactivity. Overall, reactions between NO and globin heme-iron contribute to vascular homeostasis by regulating vasodilatory NO signals and scaveging reactive species in cells of the mammalian vascular system. Here, we discuss how globin proteins affect vascular physiology with a focus on NO biology, and offer perspectives for future study of these functions.
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Affiliation(s)
- T C Steven Keller
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, United States.,Department of Molecular Physiology and Biophysics, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Christophe Lechauve
- Department of Hematology, St. Jude's Children's Research Hospital, Memphis, TN, United States
| | - Alexander S Keller
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, United States.,Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Steven Brooks
- Physiology Unit, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, Rockville, MD, United States
| | - Mitchell J Weiss
- Department of Hematology, St. Jude's Children's Research Hospital, Memphis, TN, United States
| | - Linda Columbus
- Department of Chemistry, University of Virginia, Charlottesville, VA, United States
| | - Hans C Ackerman
- Physiology Unit, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, Rockville, MD, United States
| | - Miriam M Cortese-Krott
- Myocardial Infarction Research Laboratory, Department of Cardiology, Pulmunology, and Angiology, Medical Faculty, Heinrich-Heine-University of Düsseldorf, Düsseldorf, Germany.,Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, United States.,Department of Molecular Physiology and Biophysics, University of Virginia School of Medicine, Charlottesville, VA, United States
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Brookes ZLS, Belfield LA, Ashworth A, Casas-Agustench P, Raja M, Pollard AJ, Bescos R. Effects of chlorhexidine mouthwash on the oral microbiome. J Dent 2021; 113:103768. [PMID: 34418463 DOI: 10.1016/j.jdent.2021.103768] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/11/2021] [Accepted: 07/29/2021] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION/OBJECTIVES Chlorhexidine (CHX) is a commonly used mouthwash with potent anti-microbial effects useful for the management of oral disease. However, we are moving away from the view of simply 'killing' bacteria, towards managing oral microbial ecosystems (oral microbiome), as an integrated system, to promote oral and systemic health. Here, we aimed to review the effects of CHX mouthwash on the balance of microbial communities in the mouth in vivo in oral health and disease. SOURCES AND STUDY SECTION The hierarchy of evidence was applied, with systematic reviews and randomised controlled trials consulted where available and case controlled studies being described thereafter. Search terms for each subject category were entered into MEDLINE, PubMed, Google Scholar and the Cochrane database. Focussing on metagenomics studies provides unique overview of the oral microbiome as an integrated system. DATA Evidence was limited, but several next generation sequencing case-controlled studies suggested that in an integrated system, CHX may cause a shift towards lower bacterial diversity and abundance, in particular nitrate-reducing bacteria in vivo. CHX also appeared to alter salivary pH, lactate, nitrate and nitrite concentrations in saliva. Evidence regarding the effects of CHX on the oral microbiome during oral disease is still emerging. CONCLUSIONS CHX alters the composition the oral microbiome. However, as CHX use remains widespread in dentistry to manage oral disease, urgent research using metagenomics studies of microbial communities in vivo are still needed to determine CHX mouthwash is 'good', 'bad' or otherwise for bacteria, in the context of oral and systemic health.
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Affiliation(s)
- Zoë L S Brookes
- Peninsula Dental School, Faculty of Health, University of Plymouth, Plymouth, PL4 8AA, United Kingdom.
| | - Louise A Belfield
- Peninsula Dental School, Faculty of Health, University of Plymouth, Plymouth, PL4 8AA, United Kingdom
| | - Ann Ashworth
- Institute of Health & Community, University of Plymouth, Plymouth, PL4 8AA, United Kingdom
| | - Patricia Casas-Agustench
- School of Health Professions, Faculty of Health, University of Plymouth, Plymouth, PL4 8AA, United Kingdom; Department of Health Sciences, Open University of Catalonia, Barcelona, Spain
| | | | - Alexander J Pollard
- Peninsula Dental School, Faculty of Health, University of Plymouth, Plymouth, PL4 8AA, United Kingdom; Bristol Dental School, University of Bristol, Bristol BS1 2LY, United Kingdom
| | - Raul Bescos
- School of Health Professions, Faculty of Health, University of Plymouth, Plymouth, PL4 8AA, United Kingdom.
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Mukhamejanova A, Alikulov Z, Shapekova N, Aubakirova K, Mukhtarov A. The effect of antioxidants on xanthine oxidase activity in fresh ovine milk. POTRAVINARSTVO 2021. [DOI: 10.5219/1662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In the present, the consequences of nitrate pollution of the environment are very pronounced. In humans and animals, microorganisms can reduce nitrates to nitrites, which cause cancer. Purified and homogeneous xanthine oxidase (XO) of cow's milk can restore these compounds, which makes the article extremely relevant. The purpose of the article is to determine the effect of antioxidants on the activity of xanthine oxidase in fresh ovine milk. Various natural and artificial antioxidants were examined for the detection of xanthine oxidase (XO) activity in ovine milk. Among the natural antioxidants, L-cysteine was more effective in the stabilization of XO in heated milk. XO of sheep milk activated by heat treatment in the presence of cysteine and molybdenum became able to convert nitrate and nitrite to nitric oxide (NO). Therefore, L-cysteine was used for double purposes: as the protector of enzyme active center against the oxidation during heat treatment of milk and as a reagent for S-nitrosothiol formation. Hypoxanthine, as a natural substrate of XO, is an effective electron donor for nitrate reductase (NR) and nitrite reductase (NiR) activities. Heat treatment of the milk in the presence of exogenous lecithin increased the activity of NR and NiR of XO and CysNO formation. Thus, during the heat treatment: a) excess of exogenous phospholipids disintegrates the structure of milk fat globule membrane (MFGM) and b) enzyme molecules denatured partially and their active center became available for exogenous cysteine, molybdenum, hypoxanthine, and nitrate or nitrite.
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Molecular mechanism of Chuanxiong Rhizoma in treating coronary artery diseases. CHINESE HERBAL MEDICINES 2021; 13:396-402. [PMID: 36118926 PMCID: PMC9476474 DOI: 10.1016/j.chmed.2021.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/16/2020] [Accepted: 10/23/2020] [Indexed: 12/12/2022] Open
Abstract
Objective Most of the studies on the herb Chuanxiong Rhizoma (CR) have focused on the l-arginine-nitric oxide (NO) pathway, but the nitrate-nitrite-NO (NO3−–NO2−–NO) pathway was rarely investigated. Therefore, the aim of this study was to evaluate the effects and mechanisms of action of CR in coronary artery disease (CAD). Methods The NO3−, NO2− and NO levels were examined in the NO3−–NO2−–NO pathway. High-performance ion chromatography was used to quantify NO3− and NO2− levels. Then, NO was quantified using a multifunctional enzyme marker with a fluorescent probe. The tension of aortic rings was measured using a multi myograph system. Results High content of NO3− and low content of NO2− was found in CR, and which could potently convert NO3− to NO2− in the presence of endogenous reductase enzyme. Incubating human coronary artery endothelial cells (HCAECs) with CR-containing serum showed that CR significantly decreased the NO3− content and increased the levels of NO2− and NO in the cells under hypoxic conditions. In addition, CR significantly relaxed isolated aortic rings when the l-arginine –NO pathway was blocked. The optimal concentration of CR for relaxation was 200 mg/mL. Conclusion CR supplements large amounts of NO in cells and vessels to achieve relaxation via the NO3−–NO2−–NO pathway, thereby making up for the deficiency caused by the lack of NO after the l-arginine-NO pathway is suppressed. This study also supports the potential use of a traditional Chinese herb for future drug development.
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36
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Stauffer M, Sakhaei Z, Greene C, Ghosh P, Bertke JA, Warren TH. Mechanism of O-Atom Transfer from Nitrite: Nitric Oxide Release at Copper(II). Inorg Chem 2021; 60:15968-15974. [PMID: 34184870 DOI: 10.1021/acs.inorgchem.1c00625] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Nitric oxide (NO) is a key signaling molecule in health and disease. While nitrite acts as a reservoir of NO activity, mechanisms for NO release require further understanding. A series of electronically varied β-diketiminatocopper(II) nitrite complexes [CuII](κ2-O2N) react with a range of electronically tuned triarylphosphines PArZ3 that release NO with the formation of O═PArZ3. Second-order rate constants are largest for electron-poor copper(II) nitrite and electron-rich phosphine pairs. Computational analysis reveals a transition-state structure energetically matched with experimentally determined activation barriers. The production of NO follows a pathway that involves nitrite isomerization at CuII from κ2-O2N to κ1-NO2 followed by O-atom transfer (OAT) to form O═PArZ3 and [CuI]-NO that releases NO upon PArZ3 binding at CuI to form [CuI]-PArZ3. These findings illustrate important mechanistic considerations involved in NO formation from nitrite via OAT.
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Affiliation(s)
- Molly Stauffer
- Department of Chemistry, Georgetown University, Box 571227-1227, Washington, D.C. 20057, United States
| | - Zeinab Sakhaei
- Department of Chemistry, Georgetown University, Box 571227-1227, Washington, D.C. 20057, United States
| | - Christine Greene
- Department of Chemistry, Georgetown University, Box 571227-1227, Washington, D.C. 20057, United States
| | - Pokhraj Ghosh
- Department of Chemistry, Georgetown University, Box 571227-1227, Washington, D.C. 20057, United States
| | - Jeffery A Bertke
- Department of Chemistry, Georgetown University, Box 571227-1227, Washington, D.C. 20057, United States
| | - Timothy H Warren
- Department of Chemistry, Georgetown University, Box 571227-1227, Washington, D.C. 20057, United States
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Rapid Response and High Selectivity for Reactive Nitrogen Species Based on Carbon Quantum Dots Fluorescent Probes. FOOD ANAL METHOD 2021. [DOI: 10.1007/s12161-020-01961-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Mahdi A, Cortese-Krott MM, Kelm M, Li N, Pernow J. Novel perspectives on redox signaling in red blood cells and platelets in cardiovascular disease. Free Radic Biol Med 2021; 168:95-109. [PMID: 33789125 DOI: 10.1016/j.freeradbiomed.2021.03.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/01/2021] [Accepted: 03/07/2021] [Indexed: 12/13/2022]
Abstract
The fundamental physiology of circulating red blood cells (RBCs) and platelets involving regulation of oxygen transport and hemostasis, respectively, are well-described in the literature. Their abundance in the circulation and their interaction with the vascular wall and each other have attracted the attention of other putative physiological and pathophysiological effects of these cells. RBCs and platelets are both important regulators of redox balance harboring powerful pro-oxidant and anti-oxidant (enzymatic and non-enzymatic) capacities. They are also involved in the regulation of vascular tone mainly via export of nitric oxide bioactivity and adenosine triphosphate. Of further importance are emerging observations that these cells undergo functional alterations when exposed to risk factors for cardiovascular disease and during developed cardiometabolic diseases. Under these conditions, the RBCs and platelets contribute to increased oxidative stress by their formation of reactive species including superoxide anion radical, hydrogen peroxide and peroxynitrite. These alterations trigger key changes in the vascular wall characterized by enhanced oxidative stress, reduced nitric oxide bioavailability and endothelial dysfunction. Additional pathophysiological effects are triggered in the heart resulting in increased susceptibility to ischemia-reperfusion injury with impairment in cardiac function. Pharmacological interventions aiming at restoring circulating cell function has been shown to exert marked beneficial effects on cardiovascular function. In this review, we summarize the current knowledge of RBC and platelet biology with special focus on redox biology, their roles in the development of cardiovascular disease and potential therapeutic strategies targeting RBC and platelet dysfunction. Finally, the complex and scarcely understood interaction between RBCs and platelets is discussed.
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Affiliation(s)
- Ali Mahdi
- Department of Medicine, Division of Cardiology, Karolinska Institutet, Stockholm, Sweden
| | - Miriam M Cortese-Krott
- Department of Cardiology, Pulmonology and Angiology Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany; Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Malte Kelm
- Department of Cardiology, Pulmonology and Angiology Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Nailin Li
- Department of Medicine, Division of Cardiovascular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - John Pernow
- Department of Medicine, Division of Cardiology, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Heart and Vascular Division, Karolinska University Hospital, Stockholm, Sweden.
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Norton AE, Sharma M, Cashen C, Dourges MA, Toupance T, Krause JA, Motkuri RK, Connick WB, Chatterjee S. pH-Mediated Colorimetric and Luminescent Sensing of Aqueous Nitrate Anions by a Platinum(II) Luminophore@Mesoporous Silica Composite. ACS APPLIED MATERIALS & INTERFACES 2021; 13:16197-16209. [PMID: 33787201 DOI: 10.1021/acsami.0c20821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Increased levels of nitrate (NO3-) in the environment can be detrimental to human health. Herein, we report a robust, cost-effective, and scalable, hybrid material-based colorimetric/luminescent sensor technology for rapid, selective, sensitive, and interference-free in situ NO3- detection. These hybrid materials are based on a square-planar platinum(II) salt [Pt(tpy)Cl]PF6 (tpy = 2,2';6',2″-terpyridine) supported on mesoporous silica. The platinum salt undergoes a vivid change in color and luminescence upon exposure to aqueous NO3- anions at pH ≤ 0 caused by substitution of the PF6- anions by aqueous NO3-. This change in photophysics of the platinum salt is induced by a rearrangement of its crystal lattice that leads to an extended Pt···Pt···Pt interaction, along with a concomitant change in its electronic structure. Furthermore, incorporating the material into mesoporous silica enhances the surface area and increases the detection sensitivity. A NO3- detection limit of 0.05 mM (3.1 ppm) is achieved, which is sufficiently lower than the ambient water quality limit of 0.16 mM (10 ppm) set by the United States Environmental Protection Agency. The colorimetric/luminescence of the hybrid material is highly selective to aqueous NO3- anions in the presence of other interfering anions, suggesting that this material is a promising candidate for the rapid NO3- detection and quantification in practical samples without separation, concentration, or other pretreatment steps.
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Affiliation(s)
- Amie E Norton
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221, United States
| | - Malvika Sharma
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221, United States
| | - Christina Cashen
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221, United States
| | - Marie-Anne Dourges
- University of Bordeaux, Institute of Molecular Chemistry, UMR 5255 CNRS, 351 Cours de la Libération, F-33405 Talence Cédex, France
| | - Thierry Toupance
- University of Bordeaux, Institute of Molecular Chemistry, UMR 5255 CNRS, 351 Cours de la Libération, F-33405 Talence Cédex, France
| | - Jeanette A Krause
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221, United States
| | - Radha Kishan Motkuri
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - William B Connick
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221, United States
| | - Sayandev Chatterjee
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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Nural Y, Keleş E, Aydıner B, Seferoğlu N, Atabey H, Seferoğlu Z. New naphthoquinone-imidazole hybrids: Synthesis, anion recognition properties, DFT studies and acid dissociation constants. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114855] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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La Padula PH, Czerniczyniec A, Bonazzola P, Piotrkowski B, Vanasco V, Lores-Arnaiz S, Costa LE. Acute hypobaric hypoxia and cardiac energetic response in prepubertal rats: Role of nitric oxide. Exp Physiol 2021; 106:1235-1248. [PMID: 33724589 DOI: 10.1113/ep089064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 03/12/2021] [Indexed: 12/25/2022]
Abstract
NEW FINDINGS What is the central question of this study? In adult rat hearts, exposure to hypobaric hypoxia increases tolerance to hypoxia-reoxygenation, termed endogenous cardioprotection. The mechanism involves the nitric oxide system and modulation of mitochondrial oxygen consumption. What is the cardiac energetic response in prepubertal rats exposed to hypobaric hypoxia? What is the main finding and its importance? Prepubertal rats, unlike adult rats, did not increase tolerance to hypoxia-reoxygenation in response acute exposure to hypobaric hypoxia, which impaired cardiac contractile economy. This finding could be related to a failure to increase nitric oxide synthase expression, hence modulation of mitochondrial oxygen consumption and ATP production. ABSTRACT Studies in our laboratory showed that exposure of rats to hypobaric hypoxia (HH) increased the tolerance of the heart to hypoxia-reoxygenation (H/R), involving mitochondrial and cytosolic nitric oxide synthase (NOS) systems. The objective of the present study was to evaluate how the degree of somatic maturation could alter this healthy response. Prepubertal male rats were exposed for 48 h to a simulated altitude of 4400 m in a hypobaric chamber. The mechanical energetic activity in perfused hearts and the contractile functional capacity of NOS in isolated left ventricular papillary muscles were evaluated during H/R. Cytosolic nitric oxide (NO), production of nitrites/nitrates (Nx), expression of NOS isoforms, mitochondrial O2 consumption and ATP production were also evaluated. The left ventricular pressure during H/R was not improved by HH. However, the energetic activity was increased. Thus, the contractile economy (left ventricular pressure/energetic activity) decreased in HH. Nitric oxide did not modify papillary muscle contractility after H/R. Cytosolic p-eNOS-Ser1177 and inducible NOS expression were decreased by HH, but no changes were observed in NO production. Interestingly, HH increased Nx levels, but O2 consumption and ATP production in mitochondria were not affected by HH. Prepubertal rats exposed to HH preserved cardiac contractile function, but with a high energetic cost, modifying contractile economy. Although this could be related to the decreased NOS expression detected, cytosolic NO production was preserved, maybe through the Nx metabolic pathway, without modification of mitochondrial ATP production and O2 consumption. In this scenario, the treatment was unable to increase tolerance to H/R as observed in adult animals.
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Affiliation(s)
- Pablo H La Padula
- Facultad de Medicina, Instituto Alberto C. Taquini de Investigaciones en Medicina Traslacional (IATIMET), Universidad de Buenos Aires (UBA) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Analia Czerniczyniec
- Facultad de Farmacia y Bioquímica, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Universidad de Buenos Aires (UBA) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Patricia Bonazzola
- Facultad de Medicina, Instituto Alberto C. Taquini de Investigaciones en Medicina Traslacional (IATIMET), Universidad de Buenos Aires (UBA) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Bárbara Piotrkowski
- Facultad de Farmacia y Bioquímica, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Universidad de Buenos Aires (UBA) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Virginia Vanasco
- Facultad de Farmacia y Bioquímica, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Universidad de Buenos Aires (UBA) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Silvia Lores-Arnaiz
- Facultad de Farmacia y Bioquímica, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Universidad de Buenos Aires (UBA) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Lidia E Costa
- Facultad de Medicina, Instituto Alberto C. Taquini de Investigaciones en Medicina Traslacional (IATIMET), Universidad de Buenos Aires (UBA) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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Alvares TS, Oliveira GVD, Volino-Souza M, Conte-Junior CA, Murias JM. Effect of dietary nitrate ingestion on muscular performance: a systematic review and meta-analysis of randomized controlled trials. Crit Rev Food Sci Nutr 2021; 62:5284-5306. [PMID: 33554654 DOI: 10.1080/10408398.2021.1884040] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Dietary nitrate consumption from foods such as beetroot has been associated with many physiological benefits including improvements in vascular health and exercise performance. More recently, attention has been given to the use of dietary nitrate as a nutritional strategy to optimize muscular performance during resistance exercise. Our purpose was to perform a systematic review and meta-analysis of the research literature assessing the effect of dietary nitrate ingestion on muscular strength and muscular endurance. A structured search was carried out in accordance with PRISMA guidelines and from the total included studies (n = 34 studies), 12 studies had data for both measurement of strength and muscular endurance outcomes, 14 studies had data only for muscular strength outcome, and 8 studies had data only for muscular endurance outcome. Standardized mean difference (SMD) was calculated and meta-analyses were performed by using a random-effects model. Dietary nitrate ingestion was found to result in a trivial but significant effect on muscular strength (overall SMD = 0.08, P = 0.0240). Regarding muscular endurance dietary nitrate was found to promote a small but significant effect (overall SMD = 0.31, P < 0.0001). Dosage, frequency of ingestion, training level, muscle group, or type of contraction did not affect the findings, except for a greater improvement in muscle endurance during isometric and isotonic when compared to isokinetic contractions. Dietary nitrate seems to have a positive effect on muscular strength and muscular endurance, which is mostly unaffected by dosage, frequency of ingestion, training level, muscle group, or type of contraction. However, given the trivial to small effect, further experimental research on this topic is warranted.
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Affiliation(s)
- Thiago Silveira Alvares
- Nutrition and Exercise Metabolism Research Group, Federal University of Rio de Janeiro, Macaé Campus, Brazil
| | - Gustavo Vieira de Oliveira
- Nutrition and Exercise Metabolism Research Group, Federal University of Rio de Janeiro, Macaé Campus, Brazil
| | - Mônica Volino-Souza
- Nutrition and Exercise Metabolism Research Group, Federal University of Rio de Janeiro, Macaé Campus, Brazil
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Woodward EE, Edwards TM, Givens CE, Kolpin DW, Hladik ML. Widespread Use of the Nitrification Inhibitor Nitrapyrin: Assessing Benefits and Costs to Agriculture, Ecosystems, and Environmental Health. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:1345-1353. [PMID: 33433195 DOI: 10.1021/acs.est.0c05732] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Agricultural production and associated applications of nitrogen (N) fertilizers have increased dramatically in the last century, and current projections to 2050 show that demands will continue to increase as the human population grows. Applied in both organic and inorganic fertilizer forms, N is an essential nutrient in crop productivity. Increased fertilizer applications, however, create the potential for more N loss before plant uptake. One strategy for minimizing N loss is the use of enhanced efficiency fertilizers, fortified with a nitrification inhibitor, such as nitrapyrin. In soils and water, nitrapyrin inhibits the activity of ammonia monooxygenase, a microbial enzyme that catalyzes the first step of nitrification from ammonium to nitrite. Potential benefits of using nitrification inhibitors range from reduced nitrate leaching and nitrous oxide emissions to increased crop yield. The extent of these benefits, however, depends on environmental conditions and management practices. Thus, such benefits are not always realized. Additionally, nitrapyrin has been shown to transport off-field, and it is unknown what effects environmental nitrapyrin could have on nontarget organisms and the ecological nitrogen cycle. Here, we review the agronomic and environmental benefits and costs of nitrapyrin use and present a series of research questions and considerations to be addressed with future nitrification inhibitor research.
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Affiliation(s)
- Emily E Woodward
- U.S. Geological Survey California Water Science Center, 6000 J Street, Placer Hall, Sacramento, California 95819, United States
| | - Thea M Edwards
- U.S. Geological Survey Columbia Environmental Research Center, 4200 New Haven Road, Columbia, Missouri 65201, United States
| | - Carrie E Givens
- U.S. Geological Survey Upper Midwest Water Science Center, 5840 Enterprise Drive, Lansing, Michigan 48911, United States
| | - Dana W Kolpin
- U.S. Geological Survey Central Midwest Water Science Center, 400 South Clinton Street, Iowa City, Iowa 52240, United States
| | - Michelle L Hladik
- U.S. Geological Survey California Water Science Center, 6000 J Street, Placer Hall, Sacramento, California 95819, United States
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Nan A, Suciu M, Ardelean I, Şenilă M, Turcu R. Characterization of the Nuclear Magnetic Resonance Relaxivity of Gadolinium Functionalized Magnetic Nanoparticles. ANAL LETT 2021. [DOI: 10.1080/00032719.2020.1731522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Alexandrina Nan
- Department of Physics of Nanostructured Systems, National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Maria Suciu
- Department of Physics of Nanostructured Systems, National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Ioan Ardelean
- Department of Physics and Chemistry, Technical University of Cluj-Napoca, Cluj-Napoca, Romania
| | - Marin Şenilă
- INCDO-INOE 2000, Research Institute for Analytical Instrumentation, Cluj-Napoca, Romania
| | - Rodica Turcu
- Department of Physics of Nanostructured Systems, National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
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Adamik B, Frostell C, Paslawska U, Dragan B, Zielinski S, Paslawski R, Janiszewski A, Zielinska M, Ryniak S, Ledin G, Gozdzik W. Platelet dysfunction in a large-animal model of endotoxic shock; effects of inhaled nitric oxide and low-dose steroid. Nitric Oxide 2021; 108:20-27. [PMID: 33400993 DOI: 10.1016/j.niox.2020.12.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVE The role of inhaled nitric oxide in the treatment of shock remains controversial and further translational research is needed. Long-term observation studies using a model of endotoxin-induced shock to assess the effect of inhaled nitric oxide on platelet aggregation have not yet been reported. APPROACH AND RESULTS The tests were carried out in an animal model of shock in two 10-h periods. During the first 10 h, endotoxin was infused and the inhibition of platelet aggregation was evaluated; following the termination of endotoxin infusion, the restoration of platelet aggregation was assessed for 10 h. A total of 30 pigs were used (NO group, N = 14; control, N = 16). In the NO group, nitric oxide inhalation (30 ppm) was started 3 h after endotoxin infusion and continued until the end of the study. Treatment with NO selectively decreased pulmonary artery pressure at 4 (p = 0.002) and 8 h (p = 0.05) of the experiment as compared to the control. Endotoxin significantly reduced platelet aggregation, as indicated by the decreased activity of platelet receptors: ASPI, ADP, collagen, and TRAP during the experiment (p < 0.001). Endotoxin had no significant effect on changes in the response of the receptor after ristocetin stimulation. After stopping endotoxin infusion, a significant restoration of receptor activity was observed for collagen and TRAP, while ASPI and ADP remained partially depressed. Inhaled nitric oxide did not cause additional inhibition of platelet aggregation, either during or after endotoxin challenge. CONCLUSIONS A profound reduction in platelet aggregation was observed during endotoxic shock. After stopping endotoxin infusion a restoration of platelet receptor activity was seen. The inhibition of platelet aggregation induced by endotoxin infusion was not intensified by nitric oxide, indicating there was no harmful effect of inhaled nitric oxide on platelet aggregation.
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Affiliation(s)
- Barbara Adamik
- Department of the Anaesthesiology and Intensive Therapy, Wroclaw Medical University, Wroclaw, Poland.
| | - Claes Frostell
- Department of Anaesthesia and Intensive Care, Danderyd Hospital, Stockholm, Sweden.
| | - Urszula Paslawska
- Veterinary Insitute, Nicolaus Copernicus University, Torun, Poland; Department of Internal Medicine and Clinic for Horses, Dogs and Cats, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland.
| | - Barbara Dragan
- Department of the Anaesthesiology and Intensive Therapy, Wroclaw Medical University, Wroclaw, Poland.
| | - Stanislaw Zielinski
- Department of the Anaesthesiology and Intensive Therapy, Wroclaw Medical University, Wroclaw, Poland.
| | - Robert Paslawski
- Veterinary Insitute, Nicolaus Copernicus University, Torun, Poland.
| | - Adrian Janiszewski
- Veterinary Institute, Poznan University of Life Science, Poznan, Poland.
| | - Marzena Zielinska
- Department of the Anaesthesiology and Intensive Therapy, Wroclaw Medical University, Wroclaw, Poland.
| | - Stanislaw Ryniak
- Department of Anaesthesia and Intensive Care, Danderyd Hospital, Stockholm, Sweden.
| | - Gustaf Ledin
- GHP Stockholm Spine Center AB, Upplands Vasby, Sweden.
| | - Waldemar Gozdzik
- Department of the Anaesthesiology and Intensive Therapy, Wroclaw Medical University, Wroclaw, Poland.
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Hallmark L, Almeida LE, Kamimura S, Smith M, Quezado ZM. Nitric oxide and sickle cell disease-Is there a painful connection? Exp Biol Med (Maywood) 2020; 246:332-341. [PMID: 33517776 DOI: 10.1177/1535370220976397] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Sickle cell disease is the most common hemoglobinopathy and affects millions worldwide. The disease is associated with severe organ dysfunction, acute and chronic pain, and significantly decreased life expectancy. The large body of work demonstrating that hemolysis results in rapid consumption of the endogenous vasodilator nitric oxide, decreased nitric oxide production, and promotion of vaso-occlusion provides the basis for the hypothesis that nitric oxide bioavailability is reduced in sickle cell disease and that this deficit plays a role in sickle cell disease pain. Despite initial promising results, large clinical trials using strategies to increase nitric oxide bioavailability in sickle cell disease patients yielded no significant change in duration or frequency of acute pain crises. Further, recent investigations showed that sickle cell disease patients and mouse models have elevated baseline levels of blood nitrite, a reservoir for nitric oxide formation and a product of nitric oxide metabolism, regardless of pain phenotype. These conflicting results challenge the hypotheses that nitric oxide bioavailability is decreased and that it plays a significant role in the pathogenesis in sickle cell disease acute pain crises. Conversely, a large body of work demonstrates that nitric oxide, as a neurotransmitter, has a complex role in pain neurobiology, contributes to the development of central sensitization, and can mediate hyperalgesia in inflammatory and neuropathic pain. These results support an alternative hypothesis: one proposing that altered nitric oxide signaling may contribute to the development of neuropathic and/or inflammatory pain in sickle cell disease through its role as a neurotransmitter.
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Affiliation(s)
- Lillian Hallmark
- Department of Perioperative Medicine, 2511National Institutes of Health Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
| | - Luis Ef Almeida
- Department of Perioperative Medicine, 2511National Institutes of Health Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
| | - Sayuri Kamimura
- Department of Perioperative Medicine, 2511National Institutes of Health Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
| | - Meghann Smith
- Department of Perioperative Medicine, 2511National Institutes of Health Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
| | - Zenaide Mn Quezado
- Department of Perioperative Medicine, 2511National Institutes of Health Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
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Carlström M, Moretti CH, Weitzberg E, Lundberg JO. Microbiota, diet and the generation of reactive nitrogen compounds. Free Radic Biol Med 2020; 161:321-325. [PMID: 33131695 DOI: 10.1016/j.freeradbiomed.2020.10.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/15/2020] [Accepted: 10/17/2020] [Indexed: 01/06/2023]
Abstract
It is becoming increasingly clear that commensal bacteria inhabiting our body surfaces interact closely with the host to modulate a vast number of physiological functions. Metabolism of dietary components by gut microbiota can result in formation of a variety of reactive compounds associated with both favorable and unfavorable health effects. N-nitrosamines and trimethylamine-N-oxide (TMAO) have been associated with detrimental health effects, including increased risk of cardiovascular and metabolic disease. Contrary, bacteria-dependent formation of nitric oxide and related bioactive nitrogen oxides from dietary nitrate have been associated with salutary effects on cardiovascular function, metabolic control and more. Here we briefly discuss how the microbiota interacts with dietary factors to regulate host functions in health and disease, focusing on formation of reactive nitrogen compounds.
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Affiliation(s)
- Mattias Carlström
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
| | - Chiara H Moretti
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Eddie Weitzberg
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Perioperative Medicine and Intensive Care, Karolinska University Hospital, Stockholm, Sweden
| | - Jon O Lundberg
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
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Mayr SJ, Mendel RR, Schwarz G. Molybdenum cofactor biology, evolution and deficiency. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1868:118883. [PMID: 33017596 DOI: 10.1016/j.bbamcr.2020.118883] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 09/21/2020] [Accepted: 09/24/2020] [Indexed: 12/14/2022]
Abstract
The molybdenum cofactor (Moco) represents an ancient metal‑sulfur cofactor, which participates as catalyst in carbon, nitrogen and sulfur cycles, both on individual and global scale. Given the diversity of biological processes dependent on Moco and their evolutionary age, Moco is traced back to the last universal common ancestor (LUCA), while Moco biosynthetic genes underwent significant changes through evolution and acquired additional functions. In this review, focused on eukaryotic Moco biology, we elucidate the benefits of gene fusions on Moco biosynthesis and beyond. While originally the gene fusions were driven by biosynthetic advantages such as coordinated expression of functionally related proteins and product/substrate channeling, they also served as origin for the development of novel functions. Today, Moco biosynthetic genes are involved in a multitude of cellular processes and loss of the according gene products result in severe disorders, both related to Moco biosynthesis and secondary enzyme functions.
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Affiliation(s)
- Simon J Mayr
- Institute of Biochemistry, Department of Chemistry, Center for Molecular Medicine, University of Cologne, Zuelpicher Str. 47, 50674 Koeln, Germany
| | - Ralf-R Mendel
- Institute of Plant Biology, Braunschweig University of Technology, Humboldtstr. 1, 38106 Braunschweig, Germany
| | - Guenter Schwarz
- Institute of Biochemistry, Department of Chemistry, Center for Molecular Medicine, University of Cologne, Zuelpicher Str. 47, 50674 Koeln, Germany.
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Tenopoulou M, Doulias PT. Endothelial nitric oxide synthase-derived nitric oxide in the regulation of metabolism. F1000Res 2020; 9. [PMID: 33042519 PMCID: PMC7531049 DOI: 10.12688/f1000research.19998.1] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/22/2020] [Indexed: 12/13/2022] Open
Abstract
Nitric oxide is an endogenously formed gas that acts as a signaling molecule in the human body. The signaling functions of nitric oxide are accomplished through two primer mechanisms: cGMP-mediated phosphorylation and the formation of S-nitrosocysteine on proteins. This review presents and discusses previous and more recent findings documenting that nitric oxide signaling regulates metabolic activity. These discussions primarily focus on endothelial nitric oxide synthase (eNOS) as the source of nitric oxide.
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Affiliation(s)
- Margarita Tenopoulou
- Children's Hospital of Philadelphia Research Institute, 3517 Civic Center Boulevard, Philadelphia, Pennsylvania, 19104-4318, USA.,Laboratory of Biochemistry, Department of Chemistry, School of Sciences, University of Ioannina, Ioannina, 45110, Greece
| | - Paschalis-Thomas Doulias
- Children's Hospital of Philadelphia Research Institute, 3517 Civic Center Boulevard, Philadelphia, Pennsylvania, 19104-4318, USA.,Laboratory of Biochemistry, Department of Chemistry, School of Sciences, University of Ioannina, Ioannina, 45110, Greece
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Sarkar S, Bhattacharya S, Alam MJ, Yadav R, Banerjee SK. Hypoxia aggravates non-alcoholic fatty liver disease in presence of high fat choline deficient diet: A pilot study. Life Sci 2020; 260:118404. [PMID: 32920003 DOI: 10.1016/j.lfs.2020.118404] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/31/2020] [Accepted: 09/06/2020] [Indexed: 12/21/2022]
Abstract
AIM NAFLD is a chronic and progressive disease for which there are no FDA-approved drugs available in the market. Drug discovery is a time-consuming procedure and requires screening of hundreds of small molecules to find new chemical entities (NECs) for a particular disease. Current preclinical NAFLD animal models take a longer time, which enhances the duration and expenses of the screening procedure. Hence to shorten the duration, we have proposed a preclinical animal model for rapid induction of non-alcoholic steatohepatitis (NASH), an advanced stage of NAFLD in rats. METHODOLOGY The animals were divided into three groups; control, high fat choline deficient (HFCD) and high fat choline deficient diet with sodium nitrite (40 mg/kg b.w. i.p. per day) (HFCD + NaNO2) respectively. Four weeks later physical and serum biochemical parameters were assessed, intraperitoneal glucose tolerance test was performed, and histopathology and gene expression were analysed. KEY FINDINGS Hypoxic stress aggravates the lipid accumulation, ballooning, lobular inflammation and fibrosis in hepatic tissue in presence of HFCD diet. SIGNIFICANCE This novel rodent model could be a useful NAFLD model to screen small molecules rapidly for treatment of NASH.
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Affiliation(s)
- Soumalya Sarkar
- Non-communicable Disease Group, Translational Health Science and Technology Institute (THSTI), Faridabad 121001, Haryana, India
| | - Sankarsan Bhattacharya
- Non-communicable Disease Group, Translational Health Science and Technology Institute (THSTI), Faridabad 121001, Haryana, India
| | - Md Jahangir Alam
- Non-communicable Disease Group, Translational Health Science and Technology Institute (THSTI), Faridabad 121001, Haryana, India
| | - Rajni Yadav
- Department of Pathology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Sanjay K Banerjee
- Non-communicable Disease Group, Translational Health Science and Technology Institute (THSTI), Faridabad 121001, Haryana, India; Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati 781101, Assam, India.
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