1
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Iqbal A, Anwar F, Saleem U, Khan SS, Karim A, Ahmad B, Gul M, Iqbal Z, Ismail T. Inhibition of Oxidative Stress and the NF-κB Pathway by a Vitamin E Derivative: Pharmacological Approach against Parkinson's Disease. ACS OMEGA 2022; 7:45088-45095. [PMID: 36530334 PMCID: PMC9753179 DOI: 10.1021/acsomega.2c05500] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder. In this study, PD was induced via (ip) injection of haloperidol (1 mg/kg/day). Animals were divided into seven groups (n = 70). Group I received the vehicle carboxymethylcellulose (CMC; 0.5%), group II was treated with designated 1 mg/kg haloperidol, and group III received the standard drug Sinemet (100 mg/kg), while groups IV-VII received a tocopherol derivative (Toco-D) at dose levels of 5, 10, 20, and 40 mg/kg, respectively, via the oral route. All groups received haloperidol for 23 consecutive days after their treatments except the control group. The improvement in locomotor activity and motor coordination was evaluated by using behavioral tests. Oxidative stress markers, neurotransmitters, and monoamine oxidase B (MAO-B) as well as NF-κB levels in the whole brain were measured. mRNA expression analysis of α-synuclein was carried out using the PCR technique. Toco-D at 20 mg/kg showed the maximum improvement in locomotor activity. The levels of antioxidant enzymes and neurotransmitters were also increased by the treatment with Toco-D. Inflammatory cytokine levels and mRNA expression of α-synuclein were decreased by Toco-D in treated animals. This study concluded that Toco-D might be effective in the improvement of locomotor activity and motor coordination in haloperidol-induced PD.
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Affiliation(s)
- Afshan Iqbal
- Riphah
Institute of Pharmaceutical Sciences, Riphah
International University, Lahore Campus, Lahore 54000, Pakistan
| | - Fareeha Anwar
- Riphah
Institute of Pharmaceutical Sciences, Riphah
International University, Lahore Campus, Lahore 54000, Pakistan
| | - Uzma Saleem
- Department
of Pharmacology, Faculty of Pharmaceutical Sciences, GC University, Faisalabad 38000, Pakistan
| | - Saira Sami Khan
- Riphah
Institute of Pharmaceutical Sciences, Riphah
International University, Lahore Campus, Lahore 54000, Pakistan
| | - Adnan Karim
- Riphah
Institute of Pharmaceutical Sciences, Riphah
International University, Lahore Campus, Lahore 54000, Pakistan
| | - Bashir Ahmad
- Riphah
Institute of Pharmaceutical Sciences, Riphah
International University, Lahore Campus, Lahore 54000, Pakistan
| | - Mubashra Gul
- Riphah
Institute of Pharmaceutical Sciences, Riphah
International University, Lahore Campus, Lahore 54000, Pakistan
| | - Zafer Iqbal
- Riphah
Institute of Pharmaceutical Sciences, Riphah
International University, Lahore Campus, Lahore 54000, Pakistan
| | - Tariq Ismail
- Department
of Pharmacy, COMSATS University, Abbottabad 22060, Pakistan
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2
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Alonso JM, Escobar-Peso A, Fernández I, Alcázar A, Marco-Contelles J. Improving the Efficacy of Quinolylnitrones for Ischemic Stroke Therapy, QN4 and QN15 as New Neuroprotective Agents after Oxygen-Glucose Deprivation/Reoxygenation-Induced Neuronal Injury. Pharmaceuticals (Basel) 2022; 15:1363. [PMID: 36355534 PMCID: PMC9697404 DOI: 10.3390/ph15111363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 10/28/2022] [Accepted: 11/02/2022] [Indexed: 01/12/2024] Open
Abstract
In our search for new neuroprotective agents for stroke therapy to improve the pharmacological profile of the compound quinolylnitrone QN23, we have prepared and studied sixteen new, related and easily available quinolylnitrones. As a result, we have identified compounds QN4 and QN15 as promising candidates showing high neuroprotection power in a cellular experimental model of ischemia. Even though they were found to be less active than our current lead compound QN23, QN4 and QN15 provide an improved potency and, particularly for QN4, an expanded range of tolerability and improved solubility compared to the parent compound. A computational DFT-based analysis has been carried out to understand the antioxidant power of quinolylnitrones QN23, QN4 and QN15. Altogether, these results show that subtle, simple modifications of the quinolylnitrone scaffold are tolerated, providing high neuroprotective activity and optimization of the pharmacological potency required for an improved design and future drug developments in the field.
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Affiliation(s)
- José M. Alonso
- Laboratory of Medicinal Chemistry (IQOG, CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain
| | - Alejandro Escobar-Peso
- Department of Research, Hospital Universitario Ramón y Cajal, IRYCIS, Ctra. Colmenar km 9.1, 28034 Madrid, Spain
| | - Israel Fernández
- Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Alberto Alcázar
- Department of Research, Hospital Universitario Ramón y Cajal, IRYCIS, Ctra. Colmenar km 9.1, 28034 Madrid, Spain
| | - José Marco-Contelles
- Laboratory of Medicinal Chemistry (IQOG, CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain
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3
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Carneiro LM, Keppler AF, Ferreira FF, Homem-de-Mello P, Bartoloni FH. Mechanisms for the Deactivation of the Electronic Excited States of α-(2-Hydroxyphenyl)- N-phenylnitrone: From Intramolecular Proton and Charge Transfer to Structure Twisting and Aggregation. J Phys Chem B 2022; 126:7373-7384. [DOI: 10.1021/acs.jpcb.2c03924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leonardo Martins Carneiro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Artur Franz Keppler
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Fabio Furlan Ferreira
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Paula Homem-de-Mello
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Fernando Heering Bartoloni
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
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4
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Polyfunctionalized α-Phenyl-tert-butyl(benzyl)nitrones: Multifunctional Antioxidants for Stroke Treatment. Antioxidants (Basel) 2022; 11:antiox11091735. [PMID: 36139811 PMCID: PMC9495348 DOI: 10.3390/antiox11091735] [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: 08/09/2022] [Revised: 08/27/2022] [Accepted: 08/27/2022] [Indexed: 11/16/2022] Open
Abstract
Nowadays, most stroke patients are treated exclusively with recombinant tissue plasminogen activator, a drug with serious side effects and limited therapeutic window. For this reason, and because of the known effects of oxidative stress on stroke, a more tolerable and efficient therapy for stroke is being sought that focuses on the control and scavenging of highly toxic reactive oxygen species by appropriate small molecules, such as nitrones with antioxidant properties. In this context, herein we report here the synthesis, antioxidant, and neuroprotective properties of twelve novel polyfunctionalized α-phenyl-tert-butyl(benzyl)nitrones. The antioxidant capacity of these nitrones was investigated by various assays, including the inhibition of lipid peroxidation induced by AAPH, hydroxyl radical scavenging assay, ABTS+-decoloration assay, DPPH scavenging assay, and inhibition of soybean lipoxygenase. The inhibitory effect on monoamine oxidases and cholinesterases and inhibition of β-amyloid aggregation were also investigated. As a result, (Z)-N-benzyl-1-(2-(3-(piperidin-1-yl)propoxy)phenyl)methanimine oxide (5) was found to be one of the most potent antioxidants, with high ABTS+ scavenging activity (19%), and potent lipoxygenase inhibitory capacity (IC50 = 10 µM), selectively inhibiting butyrylcholinesterase (IC50 = 3.46 ± 0.27 µM), and exhibited neuroprotective profile against the neurotoxicant okadaic acid in a neuronal damage model. Overall, these results pave the way for the further in-depth analysis of the neuroprotection of nitrone 5 in in vitro and in vivo models of stroke and possibly other neurodegenerative diseases in which oxidative stress is identified as a critical player.
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5
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Synthesis and Antioxidant Properties of HeteroBisNitrones Derived from Benzene Dicarbaldehydes. Antioxidants (Basel) 2022; 11:antiox11081575. [PMID: 36009295 PMCID: PMC9404792 DOI: 10.3390/antiox11081575] [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: 07/18/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
We report herein the synthesis and antioxidant profile of nine novel heterobisnitrones (hBNs) as new α-phenyl-tert-butylnitrone (PBN) analogues. The synthesized hBNs 1–9 were evaluated for their antioxidant activity using different in vitro techniques, while they were also tested as inhibitors of soybean LOX, as an indication of their anti-inflammatory effect. Nitrone hBN9 is the most potent antioxidant presenting higher anti-lipid peroxidation and hydroxyl radicals scavenging activities as well as higher lipoxygenase inhibition. In silico calculations reveal that hBN9 follows Lipinski’s rule of five and that the molecule is able to penetrate theoretically the brain. All these results led us to propose hBN9 as a new potent antioxidant nitrone.
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6
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Carneiro LM, Bartoloni FH, Angolini CFF, Keppler AF. Solvent-free synthesis of nitrone-containing template as a chemosensor for selective detection of Cu(II) in water. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120473. [PMID: 34715559 DOI: 10.1016/j.saa.2021.120473] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 09/21/2021] [Accepted: 10/04/2021] [Indexed: 06/13/2023]
Abstract
A state-of-the-art method was developed for repurposing nitrone-containing compounds in the chemosensory field, the ability of the designed molecules to chelate metal cations was evaluated, and their unprecedented solubility in water was confirmed. A facile, rapid, and solvent-free method of synthesizing small molecular mass chemosensors was developed by using a modulative α-aryl-N-aryl nitrone template. α-(Z)-Imidazol-4-ylmethylen-N-phenyl nitrone (Nit1) and α-(Z)-2-pyridyl-N-phenyl nitrone (Nit2) were prepared in 15 min, isolated in less than 60 min with ca. 90% yield, and screened against nine metal cations. Nit1 is a small-molecular-mass compound (188 g mol-1) that is water-soluble and has specificity for sensing Cu2+ with an association constant of K = 1.53 × 1010 and a limit of detection (LOD) of 0.06 ppm. These properties make Nit1 a competitive chemosensor for the detection of Cu2+ in aqueous solution. The nitrone-containing template used in this study is a step forward for new and small chemosensory entities.
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Affiliation(s)
- Leonardo M Carneiro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, Santo André, SP ZIP CODE 09210-580, Brazil
| | - Fernando H Bartoloni
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, Santo André, SP ZIP CODE 09210-580, Brazil
| | - Célio F F Angolini
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, Santo André, SP ZIP CODE 09210-580, Brazil
| | - Artur F Keppler
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, Santo André, SP ZIP CODE 09210-580, Brazil.
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7
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Rizwana N, Agarwal V, Nune M. Antioxidant for Neurological Diseases and Neurotrauma and Bioengineering Approaches. Antioxidants (Basel) 2021; 11:72. [PMID: 35052576 PMCID: PMC8773039 DOI: 10.3390/antiox11010072] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 12/10/2021] [Accepted: 12/20/2021] [Indexed: 12/16/2022] Open
Abstract
Antioxidants are a class of molecules with an innate affinity to neutralize reactive oxygen species (ROS), which are known to cause oxidative stress. Oxidative stress has been associated with a wide range of diseases mediated by physiological damage to the cells. ROS play both beneficial and detrimental roles in human physiology depending on their overall concentration. ROS are an inevitable byproduct of the normal functioning of cells, which are produced as a result of the mitochondrial respiration process. Since the establishment of the detrimental effect of oxidative stress in neurological disorders and neurotrauma, there has been growing interest in exploring antioxidants to rescue remaining or surviving cells and reverse the neurological damage. In this review, we present the survey of different antioxidants studied in neurological applications including neurotrauma. We also delve into bioengineering approaches developed to deliver antioxidants to improve their cellular uptake in neurological applications.
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Affiliation(s)
- Nasera Rizwana
- Manipal Institute of Regenerative Medicine (MIRM), Bengaluru, Manipal Academy of Higher Education (MAHE), Manipal 576104, India;
| | - Vipul Agarwal
- Cluster for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Manasa Nune
- Manipal Institute of Regenerative Medicine (MIRM), Bengaluru, Manipal Academy of Higher Education (MAHE), Manipal 576104, India;
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8
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Granato Á, Amarante GW, Adrio J. Metal-Free Solvent Promoted Oxidation of Benzylic Secondary Amines to Nitrones with H 2O 2. J Org Chem 2021; 86:13817-13823. [PMID: 34528787 PMCID: PMC8650016 DOI: 10.1021/acs.joc.1c01888] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Indexed: 11/29/2022]
Abstract
An environmentally benign protocol for the generation of nitrones from benzylic secondary amines via catalyst-free oxidation of secondary amines using H2O2 in MeOH or CH3CN is described. This methodology provides a selective access to a variety of C-aryl nitrones in yields of 60 to 93%. Several studies have been performed to shed light on the reaction mechanism and the role of the solvent.
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Affiliation(s)
- Álisson
Silva Granato
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
- Chemistry
Department, Federal University of Juiz de
Fora, Sao Pedro, Juiz de Fora 36036-900, Brazil
| | - Giovanni Wilson Amarante
- Chemistry
Department, Federal University of Juiz de
Fora, Sao Pedro, Juiz de Fora 36036-900, Brazil
| | - Javier Adrio
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
- Institute
for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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9
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Marano S, Minnelli C, Ripani L, Marcaccio M, Laudadio E, Mobbili G, Amici A, Armeni T, Stipa P. Insights into the Antioxidant Mechanism of Newly Synthesized Benzoxazinic Nitrones: In Vitro and In Silico Studies with DPPH Model Radical. Antioxidants (Basel) 2021; 10:antiox10081224. [PMID: 34439472 PMCID: PMC8388956 DOI: 10.3390/antiox10081224] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/21/2021] [Accepted: 07/27/2021] [Indexed: 11/16/2022] Open
Abstract
Synthetic nitrone spin-traps are being explored as therapeutic agents for the treatment of a wide range of oxidative stress-related pathologies, including but not limited to stroke, cancer, cardiovascular, and neurodegenerative diseases. In this context, increasing efforts are currently being made to the design and synthesis of new nitrone-based compounds with enhanced efficacy. The most researched nitrones are surely the ones related to α-phenyl-tert-butylnitrone (PBN) and 5,5-dimethyl-1-pyrroline N-oxide (DMPO) derivatives, which have shown to possess potent biological activity in many experimental animal models. However, more recently, nitrones with a benzoxazinic structure (3-aryl-2H-benzo[1,4]oxazin-N-oxides) have been demonstrated to have superior antioxidant activity compared to PBN. In this study, two new benzoxazinic nitrones bearing an electron-withdrawing methoxycarbonyl group on the benzo moiety (in para and meta positions respect to the nitronyl function) were synthesized. Their in vitro antioxidant activity was evaluated by two cellular-based assays (inhibition of AAPH-induced human erythrocyte hemolysis and cell death in human retinal pigmented epithelium (ARPE-19) cells) and a chemical approach by means of the α,α-diphenyl-β-picrylhydrazyl (DPPH) scavenging assay, using both electron paramagnetic resonance (EPR) spectroscopy and UV spectrophotometry. A computational approach was also used to investigate their potential primary mechanism of antioxidant action, as well as to rationalize the effect of functionalization on the nitrones reactivity toward DPPH, chosen as model radical in this study. Further insights were also gathered by exploring the nitrone electrochemical properties via cyclic voltammetry and by studying their kinetic behavior by means of EPR spectroscopy. Results showed that the introduction of an electron-withdrawing group in the phenyl moiety in the para position significantly increased the antioxidant capacity of benzoxazinic nitrones both in cell and cell-free systems. From the mechanistic point of view, the calculated results closely matched the experimental findings, strongly suggesting that the H-atom transfer (HAT) is likely to be the primary mechanism in the DPPH quenching.
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Affiliation(s)
- Stefania Marano
- Dipartimento di Scienze e Ingegneria della Materia, dell’Ambiente ed Urbanistica (SIMAU), Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy; (S.M.); (E.L.)
| | - Cristina Minnelli
- Dipartimento di Scienze della Vita e dell’Ambiente (DISVA), Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy; (C.M.); (G.M.)
| | - Lorenzo Ripani
- Dipartimento di Chimica, Università di Bologna, via Selmi 2, 40126 Bologna, Italy; (L.R.); (M.M.)
| | - Massimo Marcaccio
- Dipartimento di Chimica, Università di Bologna, via Selmi 2, 40126 Bologna, Italy; (L.R.); (M.M.)
| | - Emiliano Laudadio
- Dipartimento di Scienze e Ingegneria della Materia, dell’Ambiente ed Urbanistica (SIMAU), Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy; (S.M.); (E.L.)
| | - Giovanna Mobbili
- Dipartimento di Scienze della Vita e dell’Ambiente (DISVA), Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy; (C.M.); (G.M.)
| | - Adolfo Amici
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche-Sez. Biochimica, Biologia e Fisica, Università Politecnica delle Marche, 60131 Ancona, Italy; (A.A.); (T.A.)
| | - Tatiana Armeni
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche-Sez. Biochimica, Biologia e Fisica, Università Politecnica delle Marche, 60131 Ancona, Italy; (A.A.); (T.A.)
| | - Pierluigi Stipa
- Dipartimento di Scienze e Ingegneria della Materia, dell’Ambiente ed Urbanistica (SIMAU), Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy; (S.M.); (E.L.)
- Correspondence: ; Tel.: +39-071-2204409
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10
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Deletraz A, Tuccio B, Roussel J, Combes M, Cohen-Solal C, Fabre PL, Trouillas P, Vignes M, Callizot N, Durand G. Para-Substituted α-Phenyl- N- tert-butyl Nitrones: Spin-Trapping, Redox and Neuroprotective Properties. ACS OMEGA 2020; 5:30989-30999. [PMID: 33324807 PMCID: PMC7726753 DOI: 10.1021/acsomega.0c03907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/15/2020] [Indexed: 05/06/2023]
Abstract
In this work, a series of para-substituted α-phenyl-N-tert-butyl nitrones (PBN) were studied. Their radical-trapping properties were evaluated by electron paramagnetic resonance, with 4-CF3-PBN being the fastest derivative to trap the hydroxymethyl radical (•CH2OH). The redox properties of the nitrones were further investigated by cyclic voltammetry, and 4-CF3-PBN was the easiest to reduce and the hardest to oxidize. This is due to the presence of the electron-withdrawing CF3 group. Very good correlations between the Hammett constants (σp) of the substituents and both spin-trapping rates and redox potentials were observed. These correlations were further supported by computationally determined ionization potentials and atom charge densities. Finally, the neuroprotective effect of these derivatives was studied using two different in vitro models of cell death on primary cortical neurons injured by glutamate exposure or on glial cells exposed to t BuOOH. Trends between the protection afforded by the nitrones and their lipophilicity were observed. 4-CF3-PBN was the most potent agent against t BuOOH-induced oxidative stress on glial cells, while 4-Me2N-PBN showed potency in both models.
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Affiliation(s)
- Anaïs Deletraz
- Institut
des Biomolécules Max Mousseron, UMR 5247 CNRS-Université
Montpellier-ENSCM & Avignon Université, Equipe Chimie Bioorganique
et Systèmes Amphiphiles, 301 rue Baruch de Spinoza, BP 21239, Avignon 84916, Cedex 9, France
| | - Béatrice Tuccio
- Aix-Marseille
Université, CNRS, ICR UMR 7273, Avenue Escadrille Normandie
Niemen, 13397 Marseille, Cedex 20, France
| | - Julien Roussel
- Institut
des Biomolécules Max Mousseron, UMR 5247 CNRS-Université
Montpellier-ENSCM-Site faculté des Sciences, Place Eugène Bataillon, 34095 Montpellier, Cedex 05, France
| | - Maud Combes
- Neuro-Sys, 410 Chemin Départemental
60, 13120 Gardanne, France
| | - Catherine Cohen-Solal
- Institut
des Biomolécules Max Mousseron, UMR 5247 CNRS-Université
Montpellier-ENSCM-Site faculté des Sciences, Place Eugène Bataillon, 34095 Montpellier, Cedex 05, France
| | - Paul-Louis Fabre
- Pharma-Dev,
UMR152, Université de Toulouse, IRD, UPS, 35 chemin des Maraîchers, 31400 Toulouse, France
| | - Patrick Trouillas
- INSERM U1248
IPPRITT, Univ. Limoges, Faculté de Médecine et Pharmacie, 2 rue Du Professeur Descottes, 87000 Limoges, France
- Regional
Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, tř. 17 listopadu, 771 46 Olomouc, Czech Republic
| | - Michel Vignes
- Institut
des Biomolécules Max Mousseron, UMR 5247 CNRS-Université
Montpellier-ENSCM-Site faculté des Sciences, Place Eugène Bataillon, 34095 Montpellier, Cedex 05, France
| | - Noelle Callizot
- Neuro-Sys, 410 Chemin Départemental
60, 13120 Gardanne, France
| | - Grégory Durand
- Institut
des Biomolécules Max Mousseron, UMR 5247 CNRS-Université
Montpellier-ENSCM & Avignon Université, Equipe Chimie Bioorganique
et Systèmes Amphiphiles, 301 rue Baruch de Spinoza, BP 21239, Avignon 84916, Cedex 9, France
- . Phone: +33 (0)4 9014 4445
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11
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Homo-Tris-Nitrones Derived from α-Phenyl- N-tert-butylnitrone: Synthesis, Neuroprotection and Antioxidant Properties. Int J Mol Sci 2020; 21:ijms21217949. [PMID: 33114714 PMCID: PMC7663103 DOI: 10.3390/ijms21217949] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 12/11/2022] Open
Abstract
Herein we report the synthesis, antioxidant and neuroprotective power of homo-tris-nitrones (HTN) 1-3, designed on the hypothesis that the incorporation of a third nitrone motif into our previously identified homo-bis-nitrone 6 (HBN6) would result in an improved and stronger neuroprotection. The neuroprotection of HTNs 1-3, measured against oligomycin A/rotenone, showed that HTN2 was the best neuroprotective agent at a lower dose (EC50 = 51.63 ± 4.32 μM), being similar in EC50 and maximal activity to α-phenyl-N-tert-butylnitrone (PBN) and less potent than any of HBNs 4-6. The results of neuroprotection in an in vitro oxygen glucose deprivation model showed that HTN2 was the most powerful (EC50 = 87.57 ± 3.87 μM), at lower dose, but 50-fold higher than its analogous HBN5, and ≈1.7-fold less potent than PBN. HTN3 had a very good antinecrotic (IC50 = 3.47 ± 0.57 μM), antiapoptotic, and antioxidant (EC50 = 6.77 ± 1.35 μM) profile, very similar to that of its analogous HBN6. In spite of these results, and still being attractive neuroprotective agents, HTNs 2 and 3 do not have better neuroprotective properties than HBN6, but clearly exceed that of PBN.
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12
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Soulieman A, Ibrahim R, Barakat Z, Gouault N, Roisnel T, Boustie J, Grée R, Hachem A. Synthesis of Novel Cyclic Nitrones with
gem
‐Difluoroalkyl Side Chains Through Cascade Reactions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000972] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ali Soulieman
- Faculty of Sciences (I) Laboratory for Medicinal Chemistry and Natural Products, and PRASE‐EDST Lebanese University Hadath Lebanon
- CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 Univ Rennes 35000 Rennes France
| | - Rima Ibrahim
- Faculty of Sciences (I) Laboratory for Medicinal Chemistry and Natural Products, and PRASE‐EDST Lebanese University Hadath Lebanon
| | - Zeinab Barakat
- Faculty of Sciences (I) Laboratory for Medicinal Chemistry and Natural Products, and PRASE‐EDST Lebanese University Hadath Lebanon
| | - Nicolas Gouault
- CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 Univ Rennes 35000 Rennes France
| | - Thierry Roisnel
- CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 Univ Rennes 35000 Rennes France
| | - Joel Boustie
- CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 Univ Rennes 35000 Rennes France
| | - René Grée
- CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 Univ Rennes 35000 Rennes France
| | - Ali Hachem
- Faculty of Sciences (I) Laboratory for Medicinal Chemistry and Natural Products, and PRASE‐EDST Lebanese University Hadath Lebanon
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Abstract
The recent advances of tetramethylpyrazine nitrones and quinolylnitrones for the treatment of stroke have been reviewed and compared with other agents, showing promising therapeutic applications. As a result of a functional transformation of natural product ligustrazine, (Z)-N-tert-butyl-1-(3,5,6-trimethylpyrazin-2-yl)methanimine oxide (6) is a multitarget small nitrone showing potent thrombolytic activity and free radicals scavenging power, in addition to nontoxicity and blood-brain barrier permeability. Similarly, antioxidant (Z)-N-tert-butyl-1-(2-chloro-6-methoxyquinolin-3-yl)methanimine oxide (17) is a novel agent for cerebral ischemia therapy as it is able to scavenge different types of free radical species, showing strong neuroprotection and reduced infarct size.
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Affiliation(s)
- José Marco-Contelles
- Laboratory of Medicinal Chemistry, Institute of Organic Chemistry, CSIC; Juan de la Cierva, 3, 28006 Madrid, Spain
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14
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Amitina SA, Zaytseva EV, Dmitrieva NA, Lomanovich AV, Kandalintseva NV, Ten YA, Artamonov IA, Markov AF, Mazhukin DG. 5-Aryl-2-(3,5-dialkyl-4-hydroxyphenyl)-4,4-dimethyl-4 H-imidazole 3-Oxides and Their Redox Species: How Antioxidant Activity of 1-Hydroxy-2,5-dihydro-1 H-imidazoles Correlates with the Stability of Hybrid Phenoxyl-Nitroxides. Molecules 2020; 25:E3118. [PMID: 32650477 PMCID: PMC7396990 DOI: 10.3390/molecules25143118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/05/2020] [Accepted: 07/07/2020] [Indexed: 11/16/2022] Open
Abstract
Cyclic nitrones of the imidazole series, containing a sterically hindered phenol group, are promising objects for studying antioxidant activity; on the other hand, they can form persistent hybrid phenoxyl-nitroxyl radicals (HPNs) upon oxidation. Here, a series of 5-aryl-4,4-dimethyl-4H-imidazole 3-oxides was obtained by condensation of aromatic 2-hydroxylaminoketones with 4-formyl-2,6-dialkylphenols followed by oxidation of the initially formed N-hydroxy derivatives. It was shown that the antioxidant activity of both 1-hydroxy-2,5-dihydroimidazoles and 4H-imidazole 3-oxides increases with a decrease in steric volume of the alkyl substituent in the phenol group, while the stability of the corresponding HPNs generated from 4H-imidazole 3-oxides reveals the opposite tendency.
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Affiliation(s)
- Svetlana A. Amitina
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
| | - Elena V. Zaytseva
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
| | - Natalya A. Dmitrieva
- Department of Chemistry, Institute of Chemistry of Antioxidants, Novosibirsk State Pedagogical University, Vilyuyskaya Str. 28, 6301026 Novosibirsk, Russia; (N.A.D.); (N.V.K.); (A.F.M.)
| | - Alyona V. Lomanovich
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
| | - Natalya V. Kandalintseva
- Department of Chemistry, Institute of Chemistry of Antioxidants, Novosibirsk State Pedagogical University, Vilyuyskaya Str. 28, 6301026 Novosibirsk, Russia; (N.A.D.); (N.V.K.); (A.F.M.)
| | - Yury A. Ten
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
| | - Ilya A. Artamonov
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
| | - Alexander F. Markov
- Department of Chemistry, Institute of Chemistry of Antioxidants, Novosibirsk State Pedagogical University, Vilyuyskaya Str. 28, 6301026 Novosibirsk, Russia; (N.A.D.); (N.V.K.); (A.F.M.)
| | - Dmitrii G. Mazhukin
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
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