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Ventura E, Bezerra MG, Leitão EFV, do Monte SA. Acid Enriched with Methanol: Formation of a Prebiotic Cluster in the Interstellar Medium. Chemphyschem 2022; 23:e202200403. [PMID: 35962978 DOI: 10.1002/cphc.202200403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/12/2022] [Indexed: 11/12/2022]
Abstract
Organic molecules are a potential source of prebiotic chemistry in the interstellar medium (ISM). Methanol (MetOH) is a very important source of more complex molecules. H 3 O + (aq) and Cl - (aq) are fundamental to living organisms and can be generated in the ISM from the dissociation of HCl with just four water molecules, yielding the (H 3 O) + (H 2 O) 3 Cl - ion-pair. Here, a detailed mechanism, based on density functional theory (DFT) and ab-initio (2 nd order Mfller-Plesset perturbation theory, MP2) calculations, is suggested for the substitution reactions of these water molecules by MetOH. The time required for formation of an appreciable amount of the product ((H 3 O) + (MetOH) 3 Cl - ) can be only few years. Such reaction can take place in Sagittarius B2, where HCl, H 2 O and MetOH have already been identified and it can be an important source for the formation of more complex prebiotic structures.
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Affiliation(s)
- Elizete Ventura
- Universidade Federal da Paraiba, Departamento de Química, Centro de Ciências Exatas e da Natureza, 58-059-900, Joao Pessoa, BRAZIL
| | - Mariana Guedes Bezerra
- Universidade Federal da Paraiba, Departamento de Química, Centro de Ciências Exatas e da Natureza - Campus I, 58-059-900, Joao Pessoa, BRAZIL
| | - Ezequiel Fragoso Vieira Leitão
- Universidade Federal de Campina Grande, Unidade Acadêmica de Ciências Exatas e da Natureza, 58900-000, Cajazeiras, BRAZIL
| | - Silmar Andrade do Monte
- Universidade Federal da Paraiba, Quimica, Departamento de Quimica, CCEN,, Cidade Universitaria - Campus I, 58059-900, Joao Pessoa, BRAZIL
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Kessler A, Hedberg J, Blomberg E, Odnevall I. Reactive Oxygen Species Formed by Metal and Metal Oxide Nanoparticles in Physiological Media—A Review of Reactions of Importance to Nanotoxicity and Proposal for Categorization. NANOMATERIALS 2022; 12:nano12111922. [PMID: 35683777 PMCID: PMC9182937 DOI: 10.3390/nano12111922] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 05/30/2022] [Accepted: 06/02/2022] [Indexed: 02/01/2023]
Abstract
Diffusely dispersed metal and metal oxide nanoparticles (NPs) can adversely affect living organisms through various mechanisms and exposure routes. One mechanism behind their toxic potency is their ability to generate reactive oxygen species (ROS) directly or indirectly to an extent that depends on the dose, metal speciation, and exposure route. This review provides an overview of the mechanisms of ROS formation associated with metal and metal oxide NPs and proposes a possible way forward for their future categorization. Metal and metal oxide NPs can form ROS via processes related to corrosion, photochemistry, and surface defects, as well as via Fenton, Fenton-like, and Haber–Weiss reactions. Regular ligands such as biomolecules can interact with metallic NP surfaces and influence their properties and thus their capabilities of generating ROS by changing characteristics such as surface charge, surface composition, dissolution behavior, and colloidal stability. Interactions between metallic NPs and cells and their organelles can indirectly induce ROS formation via different biological responses. H2O2 can also be generated by a cell due to inflammation, induced by interactions with metallic NPs or released metal species that can initiate Fenton(-like) and Haber–Weiss reactions forming various radicals. This review discusses these different pathways and, in addition, nano-specific aspects such as shifts in the band gaps of metal oxides and how these shifts at biologically relevant energies (similar to activation energies of biological reactions) can be linked to ROS production and indicate which radical species forms. The influences of kinetic aspects, interactions with biomolecules, solution chemistry (e.g., Cl− and pH), and NP characteristics (e.g., size and surface defects) on ROS mechanisms and formation are discussed. Categorization via four tiers is suggested as a way forward to group metal and metal oxide NPs based on the ROS reaction pathways that they may undergo, an approach that does not include kinetics or environmental variations. The criteria for the four tiers are based on the ability of the metallic NPs to induce Fenton(-like) and Haber–Weiss reactions, corrode, and interact with biomolecules and their surface catalytic properties. The importance of considering kinetic data to improve the proposed categorization is highlighted.
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Affiliation(s)
- Amanda Kessler
- KTH Royal Institute of Technology, Division of Surface and Corrosion Science, Department of Chemistry, 100 44 Stockholm, Sweden; (J.H.); (E.B.)
- Correspondence: (A.K.); (I.O.); Tel.: +46-87906621 (I.O.)
| | - Jonas Hedberg
- KTH Royal Institute of Technology, Division of Surface and Corrosion Science, Department of Chemistry, 100 44 Stockholm, Sweden; (J.H.); (E.B.)
- Surface Science Western, Western University, London, ON N6G 0J3, Canada
| | - Eva Blomberg
- KTH Royal Institute of Technology, Division of Surface and Corrosion Science, Department of Chemistry, 100 44 Stockholm, Sweden; (J.H.); (E.B.)
| | - Inger Odnevall
- KTH Royal Institute of Technology, Division of Surface and Corrosion Science, Department of Chemistry, 100 44 Stockholm, Sweden; (J.H.); (E.B.)
- AIMES–Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institute and KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
- Karolinska Institute, Department of Neuroscience, 171 77 Stockholm, Sweden
- Correspondence: (A.K.); (I.O.); Tel.: +46-87906621 (I.O.)
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Onukwufor JO, Dirksen RT, Wojtovich AP. Iron Dysregulation in Mitochondrial Dysfunction and Alzheimer’s Disease. Antioxidants (Basel) 2022; 11:antiox11040692. [PMID: 35453377 PMCID: PMC9027385 DOI: 10.3390/antiox11040692] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/21/2022] [Accepted: 03/28/2022] [Indexed: 02/04/2023] Open
Abstract
Alzheimer’s disease (AD) is a devastating progressive neurodegenerative disease characterized by neuronal dysfunction, and decreased memory and cognitive function. Iron is critical for neuronal activity, neurotransmitter biosynthesis, and energy homeostasis. Iron accumulation occurs in AD and results in neuronal dysfunction through activation of multifactorial mechanisms. Mitochondria generate energy and iron is a key co-factor required for: (1) ATP production by the electron transport chain, (2) heme protein biosynthesis and (3) iron-sulfur cluster formation. Disruptions in iron homeostasis result in mitochondrial dysfunction and energetic failure. Ferroptosis, a non-apoptotic iron-dependent form of cell death mediated by uncontrolled accumulation of reactive oxygen species and lipid peroxidation, is associated with AD and other neurodegenerative diseases. AD pathogenesis is complex with multiple diverse interacting players including Aβ-plaque formation, phosphorylated tau, and redox stress. Unfortunately, clinical trials in AD based on targeting these canonical hallmarks have been largely unsuccessful. Here, we review evidence linking iron dysregulation to AD and the potential for targeting ferroptosis as a therapeutic intervention for AD.
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Affiliation(s)
- John O. Onukwufor
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY 14642, USA; (R.T.D.); (A.P.W.)
- Correspondence:
| | - Robert T. Dirksen
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY 14642, USA; (R.T.D.); (A.P.W.)
| | - Andrew P. Wojtovich
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY 14642, USA; (R.T.D.); (A.P.W.)
- Department of Anesthesiology and Perioperative Medicine, University of Rochester Medical Center, Rochester, NY 14642, USA
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Peng Y, Chang X, Lang M. Iron Homeostasis Disorder and Alzheimer's Disease. Int J Mol Sci 2021; 22:12442. [PMID: 34830326 PMCID: PMC8622469 DOI: 10.3390/ijms222212442] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/09/2021] [Accepted: 11/10/2021] [Indexed: 12/14/2022] Open
Abstract
Iron is an essential trace metal for almost all organisms, including human; however, oxidative stress can easily be caused when iron is in excess, producing toxicity to the human body due to its capability to be both an electron donor and an electron acceptor. Although there is a strict regulation mechanism for iron homeostasis in the human body and brain, it is usually inevitably disturbed by genetic and environmental factors, or disordered with aging, which leads to iron metabolism diseases, including many neurodegenerative diseases such as Alzheimer's disease (AD). AD is one of the most common degenerative diseases of the central nervous system (CNS) threatening human health. However, the precise pathogenesis of AD is still unclear, which seriously restricts the design of interventions and treatment drugs based on the pathogenesis of AD. Many studies have observed abnormal iron accumulation in different regions of the AD brain, resulting in cognitive, memory, motor and other nerve damages. Understanding the metabolic balance mechanism of iron in the brain is crucial for the treatment of AD, which would provide new cures for the disease. This paper reviews the recent progress in the relationship between iron and AD from the aspects of iron absorption in intestinal cells, storage and regulation of iron in cells and organs, especially for the regulation of iron homeostasis in the human brain and prospects the future directions for AD treatments.
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Affiliation(s)
- Yu Peng
- CAS Center for Excellence in Biotic Interactions, College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China; (Y.P.); (X.C.)
| | - Xuejiao Chang
- CAS Center for Excellence in Biotic Interactions, College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China; (Y.P.); (X.C.)
| | - Minglin Lang
- CAS Center for Excellence in Biotic Interactions, College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China; (Y.P.); (X.C.)
- College of Life Science, Agricultural University of Hebei, Baoding 071000, China
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Heidari N, Nabie R, Jabbari M, Irannejad Niri Z, Zeinalian R, Asghari Jafarabadi M, Arefhosseini SR. The association between food diversity and serum antioxidant indices in cataract patients compared to healthy subjects. JOURNAL OF RESEARCH IN MEDICAL SCIENCES : THE OFFICIAL JOURNAL OF ISFAHAN UNIVERSITY OF MEDICAL SCIENCES 2021; 26:59. [PMID: 34729067 PMCID: PMC8506238 DOI: 10.4103/jrms.jrms_321_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/29/2020] [Accepted: 03/08/2021] [Indexed: 11/12/2022]
Abstract
BACKGROUND Cataract is a chronic disorder that is related to antioxidant-oxidant imbalance situation. We aimed to investigate the association between food diversity and serum antioxidant and oxidant indices in cataract patients compared to healthy subjects. MATERIALS AND METHODS In this case-control study, ninety volunteers (aged > 50 years) were divided into the cataract (n = 45) and healthy control (n = 45) groups. Anthropometric variables, physical activity and stress levels, food diversity score, serum total oxidant capacity (TOC), and total antioxidant capacity (TAC) measurements were done for all participants. RESULTS Serum TAC, even after adjustment for stress level, was significantly higher in healthy people compared to cataract patients (P < 0.001). In addition, serum TOC was significantly lower in healthy controls compared to cataract patients (P < 0.002). In healthy group, there was a weak significant positive association between serum TAC and meats group diversity (r = 0.149, P = 0.047). In addition, there was a moderate negative association between meats group diversity and TOC in the healthy controls (r = -0.712, P = 0.041). In the cataract group, there was a significant negative association between serum TOC and diversity score of fruits (r = -0.811, P = 0.017) and meats group (r = -0.926, P = 0.046) as well as total score of food diversity (r = -0.466, P = 0.003). CONCLUSION It seems that increase in total dietary diversity and food groups' diversity can have a beneficial effect on oxidant situation among cataract patients.
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Affiliation(s)
- Naeimeh Heidari
- Department of Biochemistry, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Nabie
- Nikookari Eye Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Masoumeh Jabbari
- Department of Community Nutrition, Faculty of Nutrition Sciences and Food Industry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Irannejad Niri
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Reihaneh Zeinalian
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Seyed Rafie Arefhosseini
- Department of Biochemistry, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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Leitão EFV, Angelo Fonseca de Souza M, do Monte SA, Ventura E. Competition between electron transfer and base-induced elimination mechanisms in the gas-phase reactions of superoxide with alkyl hydroperoxides. Phys Chem Chem Phys 2021; 23:5583-5595. [PMID: 33655284 DOI: 10.1039/d0cp05761d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding the mechanism responsible for peroxides decomposition is essential to explain several biochemical processes. The mechanisms of the intrinsic reactions between the superoxide radical anion (O2˙-) and methyl, ethyl, and tert-butyl hydroperoxides (ROOH, with R = Me, Et, and t-Bu) have been characterized to understand the mechanism responsible for peroxides decomposition. The reaction energy diagrams suggest a competition between the spin-allowed and spin-forbidden electron transfer (ET), and base-induced elimination (ECO2) mechanisms. In all cases, the spin-allowed ET mechanism describes formation of the ozonide anion radical (O3˙-), either complexed with an alcohol molecule or separated. For the O2˙-/MeOOH(EtOOH) reactions, HCO2- (MeCO2-) + H2O + HO˙ and OH- + CH2O(MeCHO) + HO2˙ products are associated with the spin-forbidden ET and ECO2 channels, respectively. On the other hand, for the reaction between O2˙- and t-BuOOH, the spin-forbidden ET route describes formation of the MeCOCH2- enolate (either separated or hydrated) along with the methyl peroxyl (MeO2˙) radical. In addition, the regeneration of O2˙-via spin-forbidden ET and ECO2 channels was also characterized from the decomposition of ROOH, yielding diols (CH2(OH)2 and MeCH(OH)2), aldehydes (CH2O and MeCHO), and oxirane (cyc-CH2CMe2O).
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Affiliation(s)
- Ezequiel Fragoso Vieira Leitão
- Unidade Acadêmica de Ciências Exatas e da Natureza, Universidade Federal de Campina Grande, Cajazeiras, PB 58900-000, Brazil.
| | | | - Silmar Andrade do Monte
- Departamento de Química, CCEN, Universidade Federal da Paraíba, João Pessoa, PB 58-059-900, Brazil
| | - Elizete Ventura
- Departamento de Química, CCEN, Universidade Federal da Paraíba, João Pessoa, PB 58-059-900, Brazil
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Xu J, Mieres-Perez J, Sanchez-Garcia E, Lee JK. Gas-Phase Deprotonation of Benzhydryl Cations: Carbene Basicity, Multiplicity, and Rearrangements. J Org Chem 2019; 84:7685-7693. [PMID: 31008604 DOI: 10.1021/acs.joc.9b00496] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Many fundamental properties of carbenes, particularly basicity, remain poorly understood. Herein, an experimental and computational examination of the deprotonation of a series of benzhydryl cations has been undertaken. These studies represent the first attempt at providing experimental values for diarylcarbene basicities. Pathways to deprotonation, including whether the singlet or triplet carbene is formed, are probed. Because diarylcarbenes are expected to be among the strongest organic bases known, assessing the energetics of protonation of these species is of fundamental importance for a wide range of chemical processes.
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Affiliation(s)
- Jiahui Xu
- Department of Chemistry and Chemical Biology , Rutgers, The State University of New Jersey , New Brunswick , New Jersey 08901 , United States
| | - Joel Mieres-Perez
- Computational Biochemistry, Center of Medical Biotechnology , University of Duisburg-Essen , D-45141 Essen , Germany
| | - Elsa Sanchez-Garcia
- Computational Biochemistry, Center of Medical Biotechnology , University of Duisburg-Essen , D-45141 Essen , Germany
| | - Jeehiun K Lee
- Department of Chemistry and Chemical Biology , Rutgers, The State University of New Jersey , New Brunswick , New Jersey 08901 , United States
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Ježek J, Cooper KF, Strich R. Reactive Oxygen Species and Mitochondrial Dynamics: The Yin and Yang of Mitochondrial Dysfunction and Cancer Progression. Antioxidants (Basel) 2018; 7:E13. [PMID: 29337889 PMCID: PMC5789323 DOI: 10.3390/antiox7010013] [Citation(s) in RCA: 281] [Impact Index Per Article: 46.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 01/02/2018] [Accepted: 01/09/2018] [Indexed: 12/11/2022] Open
Abstract
Mitochondria are organelles with a highly dynamic ultrastructure maintained by a delicate equilibrium between its fission and fusion rates. Understanding the factors influencing this balance is important as perturbations to mitochondrial dynamics can result in pathological states. As a terminal site of nutrient oxidation for the cell, mitochondrial powerhouses harness energy in the form of ATP in a process driven by the electron transport chain. Contemporaneously, electrons translocated within the electron transport chain undergo spontaneous side reactions with oxygen, giving rise to superoxide and a variety of other downstream reactive oxygen species (ROS). Mitochondrially-derived ROS can mediate redox signaling or, in excess, cause cell injury and even cell death. Recent evidence suggests that mitochondrial ultrastructure is tightly coupled to ROS generation depending on the physiological status of the cell. Yet, the mechanism by which changes in mitochondrial shape modulate mitochondrial function and redox homeostasis is less clear. Aberrant mitochondrial morphology may lead to enhanced ROS formation, which, in turn, may deteriorate mitochondrial health and further exacerbate oxidative stress in a self-perpetuating vicious cycle. Here, we review the latest findings on the intricate relationship between mitochondrial dynamics and ROS production, focusing mainly on its role in malignant disease.
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Affiliation(s)
- Jan Ježek
- Department of Molecular Biology, Rowan University Graduate School of Biomedical Sciences, Stratford, NJ 08084, USA.
| | - Katrina F Cooper
- Department of Molecular Biology, Rowan University Graduate School of Biomedical Sciences, Stratford, NJ 08084, USA.
| | - Randy Strich
- Department of Molecular Biology, Rowan University Graduate School of Biomedical Sciences, Stratford, NJ 08084, USA.
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Leitão EFV, Ventura E, de Souza MAF, Riveros JM, do Monte SA. Spin-Forbidden Branching in the Mechanism of the Intrinsic Haber-Weiss Reaction. ChemistryOpen 2017. [PMID: 28638768 PMCID: PMC5474656 DOI: 10.1002/open.201600169] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The mechanism of the O2⋅− and H2O2 reaction (Haber–Weiss) under solvent‐free conditions has been characterized at the DFT and CCSD(T) level of theory to account for the ease of this reaction in the gas phase and the formation of two different set of products (Blanksby et al., Angew. Chem. Int. Ed. 2007, 46, 4948). The reaction is shown to proceed through an electron‐transfer process from the superoxide anion to hydrogen peroxide, along two pathways. While the O3⋅− + H2O products are formed from a spin‐allowed reaction (on the doublet surface), the preferred products, O⋅−(H2O)+3O2, are formed through a spin‐forbidden reaction as a result of a favorable crossing point between the doublet and quartet surface. Plausible reasons for the preference toward the latter set are given in terms of the characteristics of the minimum energy crossing point (MECP) and the stability of an intermediate formed (after the MECP) in the quartet surface. These unique results show that these two pathways are associated with a bifurcation, yielding spin‐dependent products.
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Affiliation(s)
- Ezequiel F V Leitão
- Departamento de Química Universidade Federal da ParaíbaJoão Pessoa, PB 58.059-900 Brazil
| | - Elizete Ventura
- Departamento de Química Universidade Federal da ParaíbaJoão Pessoa, PB 58.059-900 Brazil
| | - Miguel A F de Souza
- Instituto de Química Universidade Federal do Rio Grande do Norte Natal, RN 59072-970 Brazil
| | - José M Riveros
- Departamento de Química Fundamental Universidade de São Paulo Av. Prof. Lineu Prestes, 748 05508-000 São Paulo, SP, Brazil João Pessoa, PB, 58.059-900 Brazil
| | - Silmar A do Monte
- Departamento de Química Universidade Federal da ParaíbaJoão Pessoa, PB 58.059-900 Brazil
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