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Horowitz RI, Fallon J, Freeman PR. Combining Double-Dose and High-Dose Pulsed Dapsone Combination Therapy for Chronic Lyme Disease/Post-Treatment Lyme Disease Syndrome and Co-Infections, Including Bartonella: A Report of 3 Cases and a Literature Review. Microorganisms 2024; 12:909. [PMID: 38792737 PMCID: PMC11124288 DOI: 10.3390/microorganisms12050909] [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: 02/28/2024] [Revised: 04/03/2024] [Accepted: 04/22/2024] [Indexed: 05/26/2024] Open
Abstract
Three patients with relapsing and remitting borreliosis, babesiosis, and bartonellosis, despite extended anti-infective therapy, were prescribed double-dose dapsone combination therapy (DDDCT) for 8 weeks, followed by one or several two-week courses of pulsed high-dose dapsone combination therapy (HDDCT). We discuss these patients' cases to illustrate three important variables required for long-term remission. First, diagnosing and treating active co-infections, including Babesia and Bartonella were important. Babesia required rotations of multiple anti-malarial drug combinations and herbal therapies, and Bartonella required one or several 6-day HDDCT pulses to achieve clinical remission. Second, all prior oral, intramuscular (IM), and/or intravenous (IV) antibiotics used for chronic Lyme disease (CLD)/post-treatment Lyme disease syndrome (PTLDS), irrespective of the length of administration, were inferior in efficacy to short-term pulsed biofilm/persister drug combination therapy i.e., dapsone, rifampin, methylene blue, and pyrazinamide, which improved resistant fatigue, pain, headaches, insomnia, and neuropsychiatric symptoms. Lastly, addressing multiple factors on the 16-point multiple systemic infectious disease syndrome (MSIDS) model was important in achieving remission. In conclusion, DDDCT with one or several 6-7-day pulses of HDDCT, while addressing abnormalities on the 16-point MSIDS map, could represent a novel effective clinical and anti-infective strategy in CLD/PTLDS and associated co-infections including Bartonella.
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Affiliation(s)
- Richard I. Horowitz
- New York State Department of Health Tick-Borne Working Group, Albany, NY 12224, USA
- Hudson Valley Healing Arts Center, Hyde Park, NY 12538, USA; (J.F.); (P.R.F.)
| | - John Fallon
- Hudson Valley Healing Arts Center, Hyde Park, NY 12538, USA; (J.F.); (P.R.F.)
| | - Phyllis R. Freeman
- Hudson Valley Healing Arts Center, Hyde Park, NY 12538, USA; (J.F.); (P.R.F.)
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2
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Galli F, Bartolini D, Ronco C. Oxidative stress, defective proteostasis and immunometabolic complications in critically ill patients. Eur J Clin Invest 2024:e14229. [PMID: 38676423 DOI: 10.1111/eci.14229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/31/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024]
Abstract
Oxidative stress (OS) develops in critically ill patients as a metabolic consequence of the immunoinflammatory and degenerative processes of the tissues. These induce increased and/or dysregulated fluxes of reactive species enhancing their pro-oxidant activity and toxicity. At the same time, OS sustains its own inflammatory and immunometabolic pathogenesis, leading to a pervasive and vitious cycle of events that contribute to defective immunity, organ dysfunction and poor prognosis. Protein damage is a key player of these OS effects; it generates increased levels of protein oxidation products and misfolded proteins in both the cellular and extracellular environment, and contributes to forms DAMPs and other proteinaceous material to be removed by endocytosis and proteostasis processes of different cell types, as endothelial cells, tissue resident monocytes-macrophages and peripheral immune cells. An excess of OS and protein damage in critical illness can overwhelm such cellular processes ultimately interfering with systemic proteostasis, and consequently with innate immunity and cell death pathways of the tissues thus sustaining organ dysfunction mechanisms. Extracorporeal therapies based on biocompatible/bioactive membranes and new adsorption techniques may hold some potential in reducing the impact of OS on the defective proteostasis of patients with critical illness. These can help neutralizing reactive and toxic species, also removing solutes in a wide spectrum of molecular weights thus improving proteostasis and its immunometabolic corelates. Pharmacological therapy is also moving steps forward which could help to enhance the efficacy of extracorporeal treatments. This narrative review article explores the aspects behind the origin and pathogenic role of OS in intensive care and critically ill patients, with a focus on protein damage as a cause of impaired systemic proteostasis and immune dysfunction in critical illness.
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Affiliation(s)
- Francesco Galli
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Desirée Bartolini
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Claudio Ronco
- Department of Medicine, International Renal Research Institute of Vicenza, University of Padova, San Bortolo Hospital Vicenza, Vicenza, Italy
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3
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Maia LB, Maiti BK, Moura I, Moura JJG. Selenium-More than Just a Fortuitous Sulfur Substitute in Redox Biology. Molecules 2023; 29:120. [PMID: 38202704 PMCID: PMC10779653 DOI: 10.3390/molecules29010120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
Living organisms use selenium mainly in the form of selenocysteine in the active site of oxidoreductases. Here, selenium's unique chemistry is believed to modulate the reaction mechanism and enhance the catalytic efficiency of specific enzymes in ways not achievable with a sulfur-containing cysteine. However, despite the fact that selenium/sulfur have different physicochemical properties, several selenoproteins have fully functional cysteine-containing homologues and some organisms do not use selenocysteine at all. In this review, selected selenocysteine-containing proteins will be discussed to showcase both situations: (i) selenium as an obligatory element for the protein's physiological function, and (ii) selenium presenting no clear advantage over sulfur (functional proteins with either selenium or sulfur). Selenium's physiological roles in antioxidant defence (to maintain cellular redox status/hinder oxidative stress), hormone metabolism, DNA synthesis, and repair (maintain genetic stability) will be also highlighted, as well as selenium's role in human health. Formate dehydrogenases, hydrogenases, glutathione peroxidases, thioredoxin reductases, and iodothyronine deiodinases will be herein featured.
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Affiliation(s)
- Luisa B. Maia
- LAQV, REQUIMTE, Department of Chemistry, NOVA School of Science and Technology | NOVA FCT, 2829-516 Caparica, Portugal; (I.M.); (J.J.G.M.)
| | - Biplab K. Maiti
- Department of Chemistry, School of Sciences, Cluster University of Jammu, Canal Road, Jammu 180001, India
| | - Isabel Moura
- LAQV, REQUIMTE, Department of Chemistry, NOVA School of Science and Technology | NOVA FCT, 2829-516 Caparica, Portugal; (I.M.); (J.J.G.M.)
| | - José J. G. Moura
- LAQV, REQUIMTE, Department of Chemistry, NOVA School of Science and Technology | NOVA FCT, 2829-516 Caparica, Portugal; (I.M.); (J.J.G.M.)
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4
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Schwartz L, Aparicio-Alonso M, Henry M, Radman M, Attal R, Bakkar A. Toxicity of the spike protein of COVID-19 is a redox shift phenomenon: A novel therapeutic approach. Free Radic Biol Med 2023; 206:106-110. [PMID: 37392949 DOI: 10.1016/j.freeradbiomed.2023.05.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/27/2023] [Accepted: 05/12/2023] [Indexed: 07/03/2023]
Abstract
We previously demonstrated that most diseases display a form of anabolism due to mitochondrial impairment: in cancer, a daughter cell is formed; in Alzheimer's disease, amyloid plaques; in inflammation cytokines and lymphokines. The infection by Covid-19 follows a similar pattern. Long-term effects include redox shift and cellular anabolism as a result of the Warburg effect and mitochondrial dysfunction. This unrelenting anabolism leads to the cytokine storm, chronic fatigue, chronic inflammation or neurodegenerative diseases. Drugs such as Lipoic acid and Methylene Blue have been shown to enhance the mitochondrial activity, relieve the Warburg effect and increase catabolism. Similarly, coMeBining Methylene Blue, Chlorine dioxide and Lipoic acid may help reduce long-term Covid-19 effects by stimulating the catabolism.
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Affiliation(s)
| | | | - Marc Henry
- Institut Lebel, Faculté de chimie, Université de Strasbourg, 67000, Strasbourg, France
| | - Miroslav Radman
- Mediterranean Institute for Life Sciences (MedILS), 21000, Split, Croatia
| | - Romain Attal
- Cité des Sciences et de l'Industrie, 30 avenue Corentin-Cariou, 75019, Paris, France
| | - Ashraf Bakkar
- Faculty of Biotechnology, October University for Modern Sciences and Arts, Giza, Egypt
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5
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Tolmacheva AS, Onvumere MK, Sedykh SE, Timofeeva AM, Nevinsky GA. Catalase Activity of IgGs of Patients Infected with SARS-CoV-2. Int J Mol Sci 2023; 24:10081. [PMID: 37373231 DOI: 10.3390/ijms241210081] [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: 05/10/2023] [Revised: 06/06/2023] [Accepted: 06/10/2023] [Indexed: 06/29/2023] Open
Abstract
Coronavirus disease (COVID-19), caused by the SARS-CoV-2 coronavirus, leads to various manifestations of the post-COVID syndrome, including diabetes, heart and kidney disease, thrombosis, neurological and autoimmune diseases and, therefore, remains, so far, a significant public health problem. In addition, SARS-CoV-2 infection can lead to the hyperproduction of reactive oxygen species (ROS), causing adverse effects on oxygen transfer efficiency, iron homeostasis, and erythrocytes deformation, contributing to thrombus formation. In this work, the relative catalase activity of the serum IgGs of patients recovered from COVID-19, healthy volunteers vaccinated with Sputnik V, vaccinated with Sputnik V after recovering from COVID-19, and conditionally healthy donors were analyzed for the first time. Previous reports show that along with canonical antioxidant enzymes, the antibodies of mammals with superoxide dismutase, peroxidase, and catalase activities are involved in controlling reactive oxygen species levels. We here show that the IgGs from patients who recovered from COVID-19 had the highest catalase activity, and this was statistically significantly higher each compared to the healthy donors (1.9-fold), healthy volunteers vaccinated with Sputnik V (1.4-fold), and patients vaccinated after recovering from COVID-19 (2.1-fold). These data indicate that COVID-19 infection may stimulate the production of antibodies that degrade hydrogen peroxide, which is harmful at elevated concentrations.
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Affiliation(s)
- Anna S Tolmacheva
- Institute of Chemical Biology and Fundamental Medicine, SB of the RAS, 630090 Novosibirsk, Russia
| | - Margarita K Onvumere
- Institute of Chemical Biology and Fundamental Medicine, SB of the RAS, 630090 Novosibirsk, Russia
| | - Sergey E Sedykh
- Institute of Chemical Biology and Fundamental Medicine, SB of the RAS, 630090 Novosibirsk, Russia
| | - Anna M Timofeeva
- Institute of Chemical Biology and Fundamental Medicine, SB of the RAS, 630090 Novosibirsk, Russia
| | - Georgy A Nevinsky
- Institute of Chemical Biology and Fundamental Medicine, SB of the RAS, 630090 Novosibirsk, Russia
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6
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D'Alessandro A, Ciavardelli D, Pastore A, Lupisella S, Cristofaro RC, Di Felice G, Salierno R, Infante M, De Stefano A, Onetti Muda A, Morello M, Porzio O. Contribution of vitamin D 3 and thiols status to the outcome of COVID-19 disease in Italian pediatric and adult patients. Sci Rep 2023; 13:2504. [PMID: 36781931 PMCID: PMC9925220 DOI: 10.1038/s41598-023-29519-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 02/06/2023] [Indexed: 02/15/2023] Open
Abstract
The coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARSCoV-2), was declared a global pandemic by the World Health Organization (WHO) on March 2020, causing unprecedented disease with million deaths across the globe, mostly adults. Indeed, children accounted for only a few percent of cases. Italy was the first Western country struck by the COVID-19 epidemic. Increasing age, which is one of the principal risk factors for COVID-19 mortality, is associated with declined glutathione (GSH) levels. Over the last decade, several studies demonstrated that both vitamin D (VD) and GSH have immunomodulatory properties. To verify the association between VD, GSH and the outcome of COVID-19 disease, we conducted a multicenter retrospective study in 35 children and 128 adult patients with COVID-19. Our study demonstrated a hypovitaminosis D in COVID-19 patients, suggesting a possible role of low VD status in increasing the risk of COVID-19 infection and subsequent hospitalization. In addition, we find a thiol disturbance with a GSH depletion associated to the disease severity. In children, who fortunately survived, both VD and GSH levels at admission were higher than in adults, suggesting that lower VD and thiols levels upon admission may be a modifiable risk factor for adverse outcomes and mortality in hospitalized patients with COVID-19.
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Affiliation(s)
- Annamaria D'Alessandro
- Clinical Biochemistry Laboratory, IRCCS Bambino Gesù Children's Hospital, 00165, Rome, Italy
| | - Domenico Ciavardelli
- School of Medicine, University "Kore" of Enna, 94100, Enna, Italy
- Center for Advanced Studies and Technology (C.A.S.T.), G. D'Annunzio University of Chieti-Pescara, 66100, Chieti, Italy
| | - Anna Pastore
- Research Unit of Diagnostical and Management Innovations, IRCCS Bambino Gesù Children's Hospital, 00165, Rome, Italy.
| | - Santina Lupisella
- Clinical Biochemistry Department, Tor Vergata University Hospital (PTV), Rome, Italy
| | - Rosa Carmela Cristofaro
- Clinical Biochemistry Laboratory, IRCCS Bambino Gesù Children's Hospital, 00165, Rome, Italy
| | - Giovina Di Felice
- Clinical Biochemistry Laboratory, IRCCS Bambino Gesù Children's Hospital, 00165, Rome, Italy
| | - Roberta Salierno
- Clinical Biochemistry Department, Tor Vergata University Hospital (PTV), Rome, Italy
| | - Marco Infante
- Department of Systems Medicine, Diabetes Research Institute Federation (DRIF), Tor Vergata University, Rome, Italy
- UniCamillus, Saint Camillus International University of Health Sciences, Rome, Italy
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Rome, Italy
| | - Alberto De Stefano
- Psychiatric Unit Department of Systems Medicine, Tor Vergata University, Rome, Italy
- Volunteers Association of Tor Vergata University Hospital (PTV), Rome, Italy
| | - Andrea Onetti Muda
- Research Unit of Diagnostical and Management Innovations, IRCCS Bambino Gesù Children's Hospital, 00165, Rome, Italy
| | - Maria Morello
- Clinical Biochemistry Department, Tor Vergata University Hospital (PTV), Rome, Italy
- Clinical Biochemistry and Molecular Biology, Department of Experimental Medicine, Faculty of Medicine, Tor Vergata University, Rome, Italy
| | - Ottavia Porzio
- Clinical Biochemistry Laboratory, IRCCS Bambino Gesù Children's Hospital, 00165, Rome, Italy
- Department of Experimental Medicine, Tor Vergata University, Rome, Italy
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7
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Abou-Hamdan M, Saleh R, Mani S, Dournaud P, Metifiot M, Blondot ML, Andreola ML, Abdel-Sater F, De Reggi M, Gressens P, Laforge M. Potential antiviral effects of pantethine against SARS-CoV-2. Sci Rep 2023; 13:2237. [PMID: 36754974 PMCID: PMC9906591 DOI: 10.1038/s41598-023-29245-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 02/01/2023] [Indexed: 02/10/2023] Open
Abstract
SARS-CoV-2 interacts with cellular cholesterol during many stages of its replication cycle. Pantethine was reported to reduce total cholesterol levels and fatty acid synthesis and potentially alter different processes that might be involved in the SARS-CoV-2 replication cycle. Here, we explored the potential antiviral effects of pantethine in two in vitro experimental models of SARS-CoV-2 infection, in Vero E6 cells and in Calu-3a cells. Pantethine reduced the infection of cells by SARS-CoV-2 in both preinfection and postinfection treatment regimens. Accordingly, cellular expression of the viral spike and nucleocapsid proteins was substantially reduced, and we observed a significant reduction in viral copy numbers in the supernatant of cells treated with pantethine. In addition, pantethine inhibited the infection-induced increase in TMPRSS2 and HECT E3 ligase expression in infected cells as well as the increase in antiviral interferon-beta response and inflammatory gene expression in Calu-3a cells. Our results demonstrate that pantethine, which is well tolerated in humans, was very effective in controlling SARS-CoV-2 infection and might represent a new therapeutic drug that can be repurposed for the prevention or treatment of COVID-19 and long COVID syndrome.
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Affiliation(s)
- M Abou-Hamdan
- NeuroDiderot, Inserm, Université Paris Cité, 48 Boulevard Sérurier, 75019, Paris, France.,Biology Department, Faculty of Sciences (I), Lebanese University, Beirut, Lebanon
| | - R Saleh
- NeuroDiderot, Inserm, Université Paris Cité, 48 Boulevard Sérurier, 75019, Paris, France
| | - S Mani
- NeuroDiderot, Inserm, Université Paris Cité, 48 Boulevard Sérurier, 75019, Paris, France
| | - P Dournaud
- NeuroDiderot, Inserm, Université Paris Cité, 48 Boulevard Sérurier, 75019, Paris, France
| | - M Metifiot
- Université Bordeaux, CNRS, UMR 5234, Microbiologie Fondamentale et Pathogénicité, 33076, Bordeaux, France
| | - M L Blondot
- Université Bordeaux, CNRS, UMR 5234, Microbiologie Fondamentale et Pathogénicité, 33076, Bordeaux, France
| | - M L Andreola
- Université Bordeaux, CNRS, UMR 5234, Microbiologie Fondamentale et Pathogénicité, 33076, Bordeaux, France
| | - F Abdel-Sater
- Biochemistry Department, Faculty of Sciences (I), Lebanese University, Beirut, Lebanon
| | - M De Reggi
- NeuroDiderot, Inserm, Université Paris Cité, 48 Boulevard Sérurier, 75019, Paris, France
| | - P Gressens
- NeuroDiderot, Inserm, Université Paris Cité, 48 Boulevard Sérurier, 75019, Paris, France
| | - M Laforge
- NeuroDiderot, Inserm, Université Paris Cité, 48 Boulevard Sérurier, 75019, Paris, France.
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8
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Fraternale A, De Angelis M, De Santis R, Amatore D, Masini S, Monittola F, Menotta M, Biancucci F, Bartoccini F, Retini M, Fiori V, Fioravanti R, Magurano F, Chiarantini L, Lista F, Piersanti G, Palamara AT, Nencioni L, Magnani M, Crinelli R. Targeting SARS-CoV-2 by synthetic dual-acting thiol compounds that inhibit Spike/ACE2 interaction and viral protein production. FASEB J 2023; 37:e22741. [PMID: 36583713 PMCID: PMC9880737 DOI: 10.1096/fj.202201157rr] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 12/06/2022] [Accepted: 12/16/2022] [Indexed: 12/31/2022]
Abstract
The SARS-CoV-2 life cycle is strictly dependent on the environmental redox state that influences both virus entry and replication. A reducing environment impairs the binding of the spike protein (S) to the angiotensin-converting enzyme 2 receptor (ACE2), while a highly oxidizing environment is thought to favor S interaction with ACE2. Moreover, SARS-CoV-2 interferes with redox homeostasis in infected cells to promote the oxidative folding of its own proteins. Here we demonstrate that synthetic low molecular weight (LMW) monothiol and dithiol compounds induce a redox switch in the S protein receptor binding domain (RBD) toward a more reduced state. Reactive cysteine residue profiling revealed that all the disulfides present in RBD are targets of the thiol compounds. The reduction of disulfides in RBD decreases the binding to ACE2 in a cell-free system as demonstrated by enzyme-linked immunosorbent and surface plasmon resonance (SPR) assays. Moreover, LMW thiols interfere with protein oxidative folding and the production of newly synthesized polypeptides in HEK293 cells expressing the S1 and RBD domain, respectively. Based on these results, we hypothesize that these thiol compounds impair both the binding of S protein to its cellular receptor during the early stage of viral infection, as well as viral protein folding/maturation and thus the formation of new viral mature particles. Indeed, all the tested molecules, although at different concentrations, efficiently inhibit both SARS-CoV-2 entry and replication in Vero E6 cells. LMW thiols may represent innovative anti-SARS-CoV-2 therapeutics acting directly on viral targets and indirectly by inhibiting cellular functions mandatory for viral replication.
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Affiliation(s)
| | - Marta De Angelis
- Department of Public Health and Infectious Diseases, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | | | | | - Sofia Masini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Francesca Monittola
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Michele Menotta
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Federica Biancucci
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Michele Retini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | | | - Raoul Fioravanti
- Department of Infectious Disease, Istituto Superiore di Sanità, Rome, Italy
| | - Fabio Magurano
- Department of Infectious Disease, Istituto Superiore di Sanità, Rome, Italy
| | - Laura Chiarantini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | | | - Giovanni Piersanti
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Anna T Palamara
- Department of Public Health and Infectious Diseases, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy.,Department of Infectious Disease, Istituto Superiore di Sanità, Rome, Italy
| | - Lucia Nencioni
- Department of Public Health and Infectious Diseases, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Mauro Magnani
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Rita Crinelli
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
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9
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Kluknavsky M, Micurova A, Cebova M, Şaman E, Cacanyiova S, Bernatova I. MLN-4760 Induces Oxidative Stress without Blood Pressure and Behavioural Alterations in SHRs: Roles of Nfe2l2 Gene, Nitric Oxide and Hydrogen Sulfide. Antioxidants (Basel) 2022; 11:antiox11122385. [PMID: 36552591 PMCID: PMC9774314 DOI: 10.3390/antiox11122385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/25/2022] [Accepted: 11/28/2022] [Indexed: 12/04/2022] Open
Abstract
Reduced angiotensin 1-7 bioavailability due to inhibition of angiotensin-converting enzyme 2 (ACE2) may contribute to increased mortality in hypertensive individuals during COVID-19. However, effects of ACE2 inhibitor MLN-4760 in brain functions remain unknown. We investigated the selected behavioural and hemodynamic parameters in spontaneously hypertensive rats (SHRs) after a 2-week s.c. infusion of MLN-4760 (dose 1 mg/kg/day). The biochemical and molecular effects of MLN-4760 were investigated in the brainstem and blood plasma. MLN-4760 had no effects on hemodynamic and behavioural parameters. However, MLN-4760 increased plasma hydrogen sulfide (H2S) level and total nitric oxide (NO) synthase activity and conjugated dienes in the brainstem. Increased NO synthase activity correlated positively with gene expression of Nos3 while plasma H2S levels correlated positively with gene expressions of H2S-producing enzymes Mpst, Cth and Cbs. MLN-4760 administration increased gene expression of Ace2, Sod1, Sod2, Gpx4 and Hmox1, which positively correlated with expression of Nfe2l2 gene encoding the redox-sensitive transcription factor NRF2. Collectively, MLN-4760 did not exacerbate pre-existing hypertension and behavioural hyperactivity/anxiety in SHRs. However, MLN-4760-induced oxidative damage in brainstem was associated with activation of NO- and H2S-mediated compensatory mechanisms and with increased gene expression of antioxidant, NO- and H2S-producing enzymes that all correlated positively with elevated Nfe2l2 expression.
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10
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Ng ML, Kuan WS, Pakkiri LS, Goh ECH, Wu LH, Drum CL. Deep phenotyping of oxidative stress in emergency room patients reveals homoarginine as a novel predictor of sepsis severity, length of hospital stay, and length of intensive care unit stay. Front Med (Lausanne) 2022; 9:1033083. [PMID: 36507541 PMCID: PMC9733670 DOI: 10.3389/fmed.2022.1033083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/10/2022] [Indexed: 11/27/2022] Open
Abstract
Background We aimed to determine primary markers of oxidative stress (OS) in ED patients which predict hospital length of stay (LoS), intensive care unit (ICU) LoS, and sepsis severity. Materials and methods This prospective, single center observational study was conducted in adult patients recruited from the ED who were diagnosed with either sepsis, infection without sepsis, or non-infectious, age-matched controls. 290 patients were admitted to the hospital and 24 patients had direct admission to the ICU. A panel of 269 OS and related metabolic markers were profiled for each cohort. Clinical outcomes were direct ICU admission, hospital LoS, ICU LoS, and post-hoc, adjudicated sepsis severity scoring. Bonferroni correction was used for pairwise comparisons. Principal component regression was used for dimensionality reduction and selection of plasma metabolites associated with sepsis. Multivariable negative binomial regression was applied to predict admission, hospital, and ICU LoS. Results Homoarginine (hArg) was the top discriminator of sepsis severity [sepsis vs. control: ROC-AUC = 0.86 (95% CI 0.81-0.91)], [sepsis vs. infection: ROC-AUC = 0.73 (95% CI 0.68-0.78)]. The 25th percentile of hArg [odds ratio (OR) = 8.57 (95% CI 1.05-70.06)] was associated with hospital LoS [IRR = 2.54 (95% CI 1.83-3.52)] and ICU LOS [IRR = 18.73 (95% CI 4.32-81.27)]. In prediction of outcomes, hArg had superior performance compared to arginine (Arg) [hArg ROC-AUC = 0.77 (95% CI 0.67-0.88) vs. Arg ROC-AUC = 0.66 (95% CI 0.55-0.78)], and dimethylarginines [SDMA ROC-AUC 0.68 (95% CI 0.55-0.79) and ADMA ROC-AUC = 0.68 (95% CI 0.56-0.79)]. Ratio of hArg and Arg/NO metabolic markers and creatinine clearance provided modest improvements in clinical prediction. Conclusion Homoarginine is associated with sepsis severity and predicts hospital and ICU LoS, making it a useful biomarker in guiding treatment decisions for ED patients.
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Affiliation(s)
- Mei Li Ng
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Win Sen Kuan
- Emergency Medicine Department, National University Hospital, National University Health System, Singapore, Singapore
| | | | - Eugene Chen Howe Goh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Lik Hang Wu
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Chester Lee Drum
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore,Cardiovascular Research Institute, National University Health System, Singapore, Singapore,Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore,*Correspondence: Chester Lee Drum,
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11
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Pisoschi AM, Iordache F, Stanca L, Gajaila I, Ghimpeteanu OM, Geicu OI, Bilteanu L, Serban AI. Antioxidant, Anti-inflammatory, and Immunomodulatory Roles of Nonvitamin Antioxidants in Anti-SARS-CoV-2 Therapy. J Med Chem 2022; 65:12562-12593. [PMID: 36136726 PMCID: PMC9514372 DOI: 10.1021/acs.jmedchem.2c01134] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Indexed: 11/28/2022]
Abstract
Viral pathologies encompass activation of pro-oxidative pathways and inflammatory burst. Alleviating overproduction of reactive oxygen species and cytokine storm in COVID-19 is essential to counteract the immunogenic damage in endothelium and alveolar membranes. Antioxidants alleviate oxidative stress, cytokine storm, hyperinflammation, and diminish the risk of organ failure. Direct antiviral roles imply: impact on viral spike protein, interference with the ACE2 receptor, inhibition of dipeptidyl peptidase 4, transmembrane protease serine 2 or furin, and impact on of helicase, papain-like protease, 3-chyomotrypsin like protease, and RNA-dependent RNA polymerase. Prooxidative environment favors conformational changes in the receptor binding domain, promoting the affinity of the spike protein for the host receptor. Viral pathologies imply a vicious cycle, oxidative stress promoting inflammatory responses, and vice versa. The same was noticed with respect to the relationship antioxidant impairment-viral replication. Timing, dosage, pro-oxidative activities, mutual influences, and interference with other antioxidants should be carefully regarded. Deficiency is linked to illness severity.
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Affiliation(s)
- Aurelia Magdalena Pisoschi
- Faculty of Veterinary Medicine, Department Preclinical
Sciences, University of Agronomic Sciences and Veterinary Medicine of
Bucharest, 105 Splaiul Independentei, 050097Bucharest,
Romania
| | - Florin Iordache
- Faculty of Veterinary Medicine, Department Preclinical
Sciences, University of Agronomic Sciences and Veterinary Medicine of
Bucharest, 105 Splaiul Independentei, 050097Bucharest,
Romania
| | - Loredana Stanca
- Faculty of Veterinary Medicine, Department Preclinical
Sciences, University of Agronomic Sciences and Veterinary Medicine of
Bucharest, 105 Splaiul Independentei, 050097Bucharest,
Romania
| | - Iuliana Gajaila
- Faculty of Veterinary Medicine, Department Preclinical
Sciences, University of Agronomic Sciences and Veterinary Medicine of
Bucharest, 105 Splaiul Independentei, 050097Bucharest,
Romania
| | - Oana Margarita Ghimpeteanu
- Faculty of Veterinary Medicine, Department Preclinical
Sciences, University of Agronomic Sciences and Veterinary Medicine of
Bucharest, 105 Splaiul Independentei, 050097Bucharest,
Romania
| | - Ovidiu Ionut Geicu
- Faculty of Veterinary Medicine, Department Preclinical
Sciences, University of Agronomic Sciences and Veterinary Medicine of
Bucharest, 105 Splaiul Independentei, 050097Bucharest,
Romania
- Faculty of Biology, Department Biochemistry and
Molecular Biology, University of Bucharest, 91-95 Splaiul
Independentei, 050095Bucharest, Romania
| | - Liviu Bilteanu
- Faculty of Veterinary Medicine, Department Preclinical
Sciences, University of Agronomic Sciences and Veterinary Medicine of
Bucharest, 105 Splaiul Independentei, 050097Bucharest,
Romania
- Molecular Nanotechnology Laboratory,
National Institute for Research and Development in
Microtechnologies, 126A Erou Iancu Nicolae Street, 077190Bucharest,
Romania
| | - Andreea Iren Serban
- Faculty of Veterinary Medicine, Department Preclinical
Sciences, University of Agronomic Sciences and Veterinary Medicine of
Bucharest, 105 Splaiul Independentei, 050097Bucharest,
Romania
- Faculty of Biology, Department Biochemistry and
Molecular Biology, University of Bucharest, 91-95 Splaiul
Independentei, 050095Bucharest, Romania
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12
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Majumder N, Deepak V, Hadique S, Aesoph D, Velayutham M, Ye Q, Mazumder MHH, Lewis SE, Kodali V, Roohollahi A, Guo NL, Hu G, Khramtsov VV, Johnson RJ, Wen S, Kelley EE, Hussain S. Redox imbalance in COVID-19 pathophysiology. Redox Biol 2022; 56:102465. [PMID: 36116160 PMCID: PMC9464257 DOI: 10.1016/j.redox.2022.102465] [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: 06/30/2022] [Revised: 08/23/2022] [Accepted: 09/01/2022] [Indexed: 12/15/2022] Open
Abstract
Background The pathophysiologic significance of redox imbalance is unquestionable as numerous reports and topic reviews indicate alterations in redox parameters during corona virus disease 2019 (COVID-19). However, a more comprehensive understanding of redox-related parameters in the context of COVID-19-mediated inflammation and pathophysiology is required. Methods COVID-19 subjects (n = 64) and control subjects (n = 19) were enrolled, and blood was drawn within 72 h of diagnosis. Serum multiplex assays and peripheral blood mRNA sequencing was performed. Oxidant/free radical (electron paramagnetic resonance (EPR) spectroscopy, nitrite-nitrate assay) and antioxidant (ferrous reducing ability of serum assay and high-performance liquid chromatography) were performed. Multivariate analyses were performed to evaluate potential of indicated parameters to predict clinical outcome. Results Significantly greater levels of multiple inflammatory and vascular markers were quantified in the subjects admitted to the ICU compared to non-ICU subjects. Gene set enrichment analyses indicated significant enhancement of oxidant related pathways and biochemical assays confirmed a significant increase in free radical production and uric acid reduction in COVID-19 subjects. Multivariate analyses confirmed a positive association between serum levels of VCAM-1, ICAM-1 and a negative association between the abundance of one electron oxidants (detected by ascorbate radical formation) and mortality in COVID subjects while IL-17c and TSLP levels predicted need for intensive care in COVID-19 subjects. Conclusion Herein we demonstrate a significant redox imbalance during COVID-19 infection affirming the potential for manipulation of oxidative stress pathways as a new therapeutic strategy COVID-19. However, further work is requisite for detailed identification of oxidants (O2•-, H2O2 and/or circulating transition metals such as Fe or Cu) contributing to this imbalance to avoid the repetition of failures using non-specific antioxidant supplementation.
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Affiliation(s)
- Nairrita Majumder
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Vishal Deepak
- Department of Internal Medicine, Section of Pulmonary, Critical Care and Sleep Medicine, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Sarah Hadique
- Department of Internal Medicine, Section of Pulmonary, Critical Care and Sleep Medicine, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Drake Aesoph
- WVU Cancer Institute, West Virginia University, Morgantown, WV, USA; Lane Department of Computer Science & Electrical Engineering, West Virginia University, Morgantown, WV, USA
| | - Murugesan Velayutham
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, WV, USA; Department of Biochemistry and Molecular Medicine, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Qing Ye
- WVU Cancer Institute, West Virginia University, Morgantown, WV, USA; Lane Department of Computer Science & Electrical Engineering, West Virginia University, Morgantown, WV, USA
| | - Md Habibul Hasan Mazumder
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Sara E Lewis
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Vamsi Kodali
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Anthony Roohollahi
- Department of Internal Medicine, Section of Pulmonary, Critical Care and Sleep Medicine, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Nancy Lan Guo
- WVU Cancer Institute, West Virginia University, Morgantown, WV, USA; Department of Occupational and Environmental Health Sciences, School of Public Health, West Virginia University, Morgantown, WV, USA
| | - Gangqing Hu
- WVU Cancer Institute, West Virginia University, Morgantown, WV, USA; Department of Microbiology, Immunology & Cell Biology, West Virginia University, Morgantown, WV, USA
| | - Valery V Khramtsov
- Department of Biochemistry and Molecular Medicine, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Richard J Johnson
- Department of Medicine, Division of Renal Diseases and Hypertension, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Sijin Wen
- Department of Epidemiology and Biostatistics, West Virginia University, Morgantown, WV, USA
| | - Eric E Kelley
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Salik Hussain
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, WV, USA; Department of Microbiology, Immunology & Cell Biology, West Virginia University, Morgantown, WV, USA.
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13
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Reactive sulfur species and their significance in health and disease. Biosci Rep 2022; 42:231692. [PMID: 36039860 PMCID: PMC9484011 DOI: 10.1042/bsr20221006] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 11/23/2022] Open
Abstract
Reactive sulfur species (RSS) have been recognized in the last two decades as very important molecules in redox regulation. They are involved in metabolic processes and, in this way, they are responsible for maintenance of health. This review summarizes current information about the essential biological RSS, including H2S, low molecular weight persulfides, protein persulfides as well as organic and inorganic polysulfides, their synthesis, catabolism and chemical reactivity. Moreover, the role of RSS disturbances in various pathologies including vascular diseases, chronic kidney diseases, diabetes mellitus Type 2, neurological diseases, obesity, chronic obstructive pulmonary disease and in the most current problem of COVID-19 is presented. The significance of RSS in aging is also mentioned. Finally, the possibilities of using the precursors of various forms of RSS for therapeutic purposes are discussed.
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14
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Duran E, Taşkın A, Pehlivan B, Çelik H, Pehlivan VF, Taşkın S. Dynamic Thiol Disulphide Homeostasis in the Follow-Up of the Prognosis of Patients Treated for COVID-19 in the Intensive Care Unit. Cureus 2022; 14:e27542. [PMID: 36060378 PMCID: PMC9428424 DOI: 10.7759/cureus.27542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2022] [Indexed: 11/05/2022] Open
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15
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How Aging and Oxidative Stress Influence the Cytopathic and Inflammatory Effects of SARS-CoV-2 Infection: The Role of Cellular Glutathione and Cysteine Metabolism. Antioxidants (Basel) 2022; 11:antiox11071366. [PMID: 35883857 PMCID: PMC9311797 DOI: 10.3390/antiox11071366] [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: 07/03/2022] [Accepted: 07/05/2022] [Indexed: 12/26/2022] Open
Abstract
SARS-CoV-2 infection can cause a severe respiratory distress syndrome with inflammatory and thrombotic complications, the severity of which increases with patients’ age and presence of comorbidity. The reasons for an age-dependent increase in the risk of severe COVID-19 could be many. These include defects in the homeostatic processes that control the cellular redox and its pivotal role in sustaining the immuno-inflammatory response to the host and the protection against oxidative stress and tissue degeneration. Pathogens may take advantage of such age-dependent abnormalities. Alterations of the thiol redox balance in the lung tissue and lining fluids may influence the risk of infection, and the host capability to respond to pathogens and to avoid severe complications. SARS-CoV-2, likewise other viruses, such as HIV, influenza, and HSV, benefits in its replication cycle of pro-oxidant conditions that the same viral infection seems to induce in the host cell with mechanisms that remain poorly understood. We recently demonstrated that the pro-oxidant effects of SARS-CoV-2 infection are associated with changes in the cellular metabolism and transmembrane fluxes of Cys and GSH. These appear to be the consequence of an increased use of Cys in viral protein synthesis and to ER stress pathway activation that interfere with transcription factors, as Nrf2 and NFkB, important to coordinate the metabolism of GSH with other aspects of the stress response and with the pro-inflammatory effects of this virus in the host cell. This narrative review article describes these cellular and molecular aspects of SARS-CoV-2 infection, and the role that antivirals and cytoprotective agents such as N-acetyl cysteine may have to limit the cytopathic effects of this virus and to recover tissue homeostasis after infection.
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16
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Kolel-Veetil MK, Kant A, Shenoy VB, Buehler MJ. SARS-CoV-2 Infection-Of Music and Mechanics of Its Spikes! A Perspective. ACS NANO 2022; 16:6949-6955. [PMID: 35512182 PMCID: PMC9092193 DOI: 10.1021/acsnano.1c11491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 04/26/2022] [Indexed: 05/11/2023]
Abstract
The COVID-19 pandemic has been inflicted upon humanity by the SARS-CoV-2 virus, the latest insidious incarnation of the coronaviruses group. While in its wake intense scientific research has produced breakthrough vaccines and cures, there still exists an immediate need to further understand the origin, mechanobiology and biochemistry, and destiny of this virus so that future pandemics arising from similar coronaviruses may be contained more effectively. In this Perspective, we discuss the various evidential findings of virus propagation and connect them to respective underpinning cellular biomechanical states leading to corresponding manifestations of the viral activity. We further propose avenues to tackle the virus, including from a "musical" vantage point, and contain its relentless strides that are currently afflicting the global populace.
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Affiliation(s)
- Manoj K. Kolel-Veetil
- Chemistry Division, Naval Research
Laboratory, Washington, D.C. 20375, United States
| | - Aayush Kant
- NSF Science and Technology Center for Engineering
Mechanobiology, University of Pennsylvania, Philadelphia,
Pennsylvania 19104, United States
| | - Vivek B. Shenoy
- NSF Science and Technology Center for Engineering
Mechanobiology, University of Pennsylvania, Philadelphia,
Pennsylvania 19104, United States
| | - Markus J. Buehler
- Laboratory for Atomistic and Molecular Mechanics (LAMM),
Massachusetts Institute of Technology, Cambridge,
Massachusetts 02139, United States
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17
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Jerotic D, Ranin J, Bukumiric Z, Djukic T, Coric V, Savic-Radojevic A, Todorovic N, Asanin M, Ercegovac M, Milosevic I, Pljesa-Ercegovac M, Stevanovic G, Matic M, Simic T. SOD2 rs4880 and GPX1 rs1050450 polymorphisms do not confer risk of COVID-19, but influence inflammation or coagulation parameters in Serbian cohort. Redox Rep 2022; 27:85-91. [PMID: 35361071 PMCID: PMC8979533 DOI: 10.1080/13510002.2022.2057707] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Objectives: Due to the role of oxidative stress in the pathophysiology of COVID-19, it is biologically plausible that inter-individual differences in patients' clinical manifestations might be affected by antioxidant genetic profile. The aim of our study was to assess the distribution of antioxidant genetic polymorphisms Nrf2 rs6721961, SOD2 rs4880, GPX1 rs1050450, GPX3 rs8177412, and GSTP1 (rs1695 and rs1138272) haplotype in COVID-19 patients and controls, with special emphasis on their association with laboratory biochemical parameters.Methods: The antioxidant genetic polymorphisms were assessed by appropriate PCR methods in 229 COVID-19 patients and 229 matched healthy individuals.Results: Among examined polymorphisms, only GSTP1 haplotype was associated with COVID-19 risk (p = 0.009). Polymorphisms of SOD2 and GPX1 influenced COVID-19 patients' laboratory biochemical profile: SOD2*Val allele was associated with increased levels of fibrinogen (p = 0.040) and ferritin (p = 0.033), whereas GPX1*Leu allele was associated with D-dimmer (p = 0.009).Discussion: Our findings regarding the influence of SOD2 and GPX1 polymorphisms on inflammation and coagulation parameters might be of clinical importance. If confirmed in larger cohorts, these developments could provide a more personalized approach for better recognition of patients prone to thrombosis and those for the need of targeted antiox-idant therapy.
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Affiliation(s)
- Djurdja Jerotic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Jovan Ranin
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Clinic of Infectious and Tropical Diseases, Clinical Centre of Serbia, Belgrade, Serbia
| | - Zoran Bukumiric
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Institute of Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Tatjana Djukic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vesna Coric
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Ana Savic-Radojevic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Nevena Todorovic
- Clinic of Infectious and Tropical Diseases, Clinical Centre of Serbia, Belgrade, Serbia
| | - Milika Asanin
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Clinic of Cardiology, Clinical Centre of Serbia, Belgrade, Serbia
| | - Marko Ercegovac
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Clinic of Neurology, Clinical Centre of Serbia, Belgrade, Serbia
| | - Ivana Milosevic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Clinic of Infectious and Tropical Diseases, Clinical Centre of Serbia, Belgrade, Serbia
| | - Marija Pljesa-Ercegovac
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Goran Stevanovic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Clinic of Infectious and Tropical Diseases, Clinical Centre of Serbia, Belgrade, Serbia
| | - Marija Matic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Tatjana Simic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Serbian Academy of Sciences and Arts, Belgrade, Serbia
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18
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Murae M, Shimizu Y, Yamamoto Y, Kobayashi A, Houri M, Inoue T, Irie T, Gemba R, Kondo Y, Nakano Y, Miyazaki S, Yamada D, Saitoh A, Ishii I, Onodera T, Takahashi Y, Wakita T, Fukasawa M, Noguchi K. The function of SARS-CoV-2 spike protein is impaired by disulfide-bond disruption with mutation at cysteine-488 and by thiol-reactive N-acetyl-cysteine and glutathione. Biochem Biophys Res Commun 2022; 597:30-36. [PMID: 35123263 PMCID: PMC8800159 DOI: 10.1016/j.bbrc.2022.01.106] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 01/26/2022] [Indexed: 12/12/2022]
Abstract
Viral spike proteins play important roles in the viral entry process, facilitating attachment to cellular receptors and fusion of the viral envelope with the cell membrane. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike protein binds to the cellular receptor angiotensin converting enzyme-2 (ACE2) via its receptor-binding domain (RBD). The cysteine residue at position 488, consisting of a disulfide bridge with cysteine 480 is located in an important structural loop at ACE2-binding surface of RBD, and is highly conserved among SARS-related coronaviruses. We showed that the substitution of Cys-488 with alanine impaired pseudotyped SARS-CoV-2 infection, syncytium formation, and cell-cell fusion triggered by SARS-CoV-2 spike expression. Consistently, in vitro binding of RBD and ACE2, spike-mediated cell-cell fusion, and pseudotyped viral infection of VeroE6/TMPRSS2 cells were inhibited by the thiol-reactive compounds N-acetylcysteine (NAC) and a reduced form of glutathione (GSH). Furthermore, we demonstrated that the activity of variant spikes from the SARS-CoV-2 alpha and delta strains were also suppressed by NAC and GSH. Taken together, these data indicate that Cys-488 in spike RBD is required for SARS-CoV-2 spike functions and infectivity, and could be a target of anti-SARS-CoV-2 therapeutics.
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Affiliation(s)
- Mana Murae
- Laboratory of Molecular Target Therapy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan; Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, 1-23-1, Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Yoshimi Shimizu
- Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, 1-23-1, Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan; Department of Pharmaceutical Sciences, Teikyo Heisei University, 4-21-2 Nakano, Nakano-ku, 164-8530, Japan
| | - Yuichiro Yamamoto
- Laboratory of Molecular Target Therapy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan
| | - Asuka Kobayashi
- Laboratory of Molecular Target Therapy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan
| | - Masumi Houri
- Laboratory of Molecular Target Therapy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan
| | - Tetsuya Inoue
- Laboratory of Molecular Target Therapy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan
| | - Takuya Irie
- Laboratory of Molecular Target Therapy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan; Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, 1-23-1, Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Ryutaro Gemba
- Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, 1-23-1, Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Yosuke Kondo
- Department of Medical and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan
| | - Yoshio Nakano
- Department of Medical and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan
| | - Satoru Miyazaki
- Department of Medical and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan
| | - Daisuke Yamada
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan
| | - Akiyoshi Saitoh
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan
| | - Isao Ishii
- Department of Health Chemistry, Showa Pharmaceutical University, Tokyo, 194-8543, Japan
| | - Taishi Onodera
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, 1-23-1, Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Yoshimasa Takahashi
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, 1-23-1, Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Takaji Wakita
- National Institute of Infectious Diseases, 1-23-1, Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Masayoshi Fukasawa
- Laboratory of Molecular Target Therapy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan; Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, 1-23-1, Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan.
| | - Kohji Noguchi
- Laboratory of Molecular Target Therapy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamasaki 2641, Noda, Chiba, 278-8510, Japan; Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, 1-23-1, Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan.
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19
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Fossum CJ, Laatsch BF, Lowater HR, Narkiewicz-Jodko AW, Lonzarich L, Hati S, Bhattacharyya S. Pre-Existing Oxidative Stress Creates a Docking-Ready Conformation of the SARS-CoV-2 Receptor-Binding Domain. ACS BIO & MED CHEM AU 2022; 2:84-93. [PMID: 37155555 PMCID: PMC8631169 DOI: 10.1021/acsbiomedchemau.1c00040] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
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The redox-dependent changes on the binding between the receptor-binding domain of the
severe acute respiratory syndrome-coronavirus-2 spike protein and the peptidase domain
of the human cell surface receptor angiotensin-converting enzyme II were investigated by
performing molecular dynamics simulations. The reduced states of the protein partners
were generated in silico by converting the disulfides to thiols. The role of redox
transformation on the protein–protein binding affinity was assessed from the
time-evolved structures after 200 ns simulations using electrostatic field calculations
and implicit solvation. The present simulations revealed that the bending motion at the
protein–protein interface is significantly altered when the disulfides are
reduced to thiols. In the native complex, the presence of disulfide bonds preserves the
structural complementarity of the protein partners and maintains the intrinsic
conformational dynamics. Also, the study demonstrates that when already bound, the
disulfide-to-thiol conversion of the receptor-binding domain has a limited impact on the
binding of the spike protein to the receptor. However, if the reduction occurs before
binding to the receptor, a spectacular conformational change of the receptor-binding
domain occurs that fully impairs the binding. In other words, the formation of disulfide
bonds, prevalent during oxidative stress, creates a conformation ready to bind to the
receptor. Taken together, the present study demonstrates the role of pre-existing
oxidative stress in elevating the binding affinity of the spike protein for the human
receptor, offering future clues for alternate therapeutic possibilities.
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Affiliation(s)
- Carl J. Fossum
- Department of Chemistry and Biochemistry, University of Wisconsin101 Roosevelt Avenue Eau Claire, Wisconsin 54701, United States
| | - Bethany F. Laatsch
- Department of Chemistry and Biochemistry, University of Wisconsin101 Roosevelt Avenue Eau Claire, Wisconsin 54701, United States
| | - Harrison R. Lowater
- Department of Chemistry and Biochemistry, University of Wisconsin101 Roosevelt Avenue Eau Claire, Wisconsin 54701, United States
| | - Alex W. Narkiewicz-Jodko
- Department of Chemistry and Biochemistry, University of Wisconsin101 Roosevelt Avenue Eau Claire, Wisconsin 54701, United States
| | - Leo Lonzarich
- Department of Chemistry and Biochemistry, University of Wisconsin101 Roosevelt Avenue Eau Claire, Wisconsin 54701, United States
| | - Sanchita Hati
- Department of Chemistry and Biochemistry, University of Wisconsin101 Roosevelt Avenue Eau Claire, Wisconsin 54701, United States
| | - Sudeep Bhattacharyya
- Department of Chemistry and Biochemistry, University of Wisconsin101 Roosevelt Avenue Eau Claire, Wisconsin 54701, United States
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20
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Shi Y, Zeida A, Edwards CE, Mallory ML, Sastre S, Machado MR, Pickles RJ, Fu L, Liu K, Yang J, Baric RS, Boucher RC, Radi R, Carroll KS. Thiol-based chemical probes exhibit antiviral activity against SARS-CoV-2 via allosteric disulfide disruption in the spike glycoprotein. Proc Natl Acad Sci U S A 2022; 119:e2120419119. [PMID: 35074895 PMCID: PMC8833197 DOI: 10.1073/pnas.2120419119] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 12/13/2021] [Indexed: 01/07/2023] Open
Abstract
The development of small-molecules targeting different components of SARS-CoV-2 is a key strategy to complement antibody-based treatments and vaccination campaigns in managing the COVID-19 pandemic. Here, we show that two thiol-based chemical probes that act as reducing agents, P2119 and P2165, inhibit infection by human coronaviruses, including SARS-CoV-2, and decrease the binding of spike glycoprotein to its receptor, the angiotensin-converting enzyme 2 (ACE2). Proteomics and reactive cysteine profiling link the antiviral activity to the reduction of key disulfides, specifically by disruption of the Cys379-Cys432 and Cys391-Cys525 pairs distal to the receptor binding motif in the receptor binding domain (RBD) of the spike glycoprotein. Computational analyses provide insight into conformation changes that occur when these disulfides break or form, consistent with an allosteric role, and indicate that P2119/P2165 target a conserved hydrophobic binding pocket in the RBD with the benzyl thiol-reducing moiety pointed directly toward Cys432. These collective findings establish the vulnerability of human coronaviruses to thiol-based chemical probes and lay the groundwork for developing compounds of this class, as a strategy to inhibit the SARS-CoV-2 infection by shifting the spike glycoprotein redox scaffold.
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MESH Headings
- Allosteric Regulation
- Amino Alcohols/chemistry
- Amino Alcohols/pharmacology
- Angiotensin-Converting Enzyme 2/antagonists & inhibitors
- Angiotensin-Converting Enzyme 2/chemistry
- Angiotensin-Converting Enzyme 2/genetics
- Angiotensin-Converting Enzyme 2/metabolism
- Antiviral Agents/chemistry
- Antiviral Agents/pharmacology
- Binding Sites
- COVID-19/virology
- Cell Line
- Disulfides/antagonists & inhibitors
- Disulfides/chemistry
- Disulfides/metabolism
- Dose-Response Relationship, Drug
- Humans
- Molecular Docking Simulation
- Nasal Mucosa/drug effects
- Nasal Mucosa/metabolism
- Nasal Mucosa/virology
- Oxidation-Reduction
- Phenyl Ethers/chemistry
- Phenyl Ethers/pharmacology
- Protein Binding
- Protein Conformation, alpha-Helical
- Protein Conformation, beta-Strand
- Protein Interaction Domains and Motifs
- Receptors, Virus/antagonists & inhibitors
- Receptors, Virus/chemistry
- Receptors, Virus/genetics
- Receptors, Virus/metabolism
- Recombinant Proteins/chemistry
- Recombinant Proteins/genetics
- Recombinant Proteins/metabolism
- SARS-CoV-2/drug effects
- SARS-CoV-2/genetics
- SARS-CoV-2/metabolism
- Spike Glycoprotein, Coronavirus/antagonists & inhibitors
- Spike Glycoprotein, Coronavirus/chemistry
- Spike Glycoprotein, Coronavirus/genetics
- Spike Glycoprotein, Coronavirus/metabolism
- Sulfhydryl Compounds/chemistry
- Sulfhydryl Compounds/pharmacology
- COVID-19 Drug Treatment
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Affiliation(s)
- Yunlong Shi
- Department of Chemistry, Scripps Research, Jupiter, FL 33458
| | - Ari Zeida
- Departamento de Bioquímica, Facultad de Medicina and Centro de Investigaciones Biomédicas, Universidad de la República, Montevideo 11800, Uruguay
| | - Caitlin E Edwards
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Michael L Mallory
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Santiago Sastre
- Departamento de Bioquímica, Facultad de Medicina and Centro de Investigaciones Biomédicas, Universidad de la República, Montevideo 11800, Uruguay
| | - Matías R Machado
- Protein Engineering Unit, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Raymond J Pickles
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Ling Fu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Keke Liu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Jing Yang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Ralph S Baric
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Richard C Boucher
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599;
| | - Rafael Radi
- Departamento de Bioquímica, Facultad de Medicina and Centro de Investigaciones Biomédicas, Universidad de la República, Montevideo 11800, Uruguay;
| | - Kate S Carroll
- Department of Chemistry, Scripps Research, Jupiter, FL 33458;
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21
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Cumpstey AF, Clark AD, Santolini J, Jackson AA, Feelisch M. COVID-19: A Redox Disease-What a Stress Pandemic Can Teach Us About Resilience and What We May Learn from the Reactive Species Interactome About Its Treatment. Antioxid Redox Signal 2021; 35:1226-1268. [PMID: 33985343 DOI: 10.1089/ars.2021.0017] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Significance: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus causing coronavirus disease 2019 (COVID-19), affects every aspect of human life by challenging bodily, socioeconomic, and political systems at unprecedented levels. As vaccines become available, their distribution, safety, and efficacy against emerging variants remain uncertain, and specific treatments are lacking. Recent Advances: Initially affecting the lungs, COVID-19 is a complex multisystems disease that disturbs the whole-body redox balance and can be long-lasting (Long-COVID). Numerous risk factors have been identified, but the reasons for variations in susceptibility to infection, disease severity, and outcome are poorly understood. The reactive species interactome (RSI) was recently introduced as a framework to conceptualize how cells and whole organisms sense, integrate, and accommodate stress. Critical Issues: We here consider COVID-19 as a redox disease, offering a holistic perspective of its effects on the human body, considering the vulnerability of complex interconnected systems with multiorgan/multilevel interdependencies. Host/viral glycan interactions underpin SARS-CoV-2's extraordinary efficiency in gaining cellular access, crossing the epithelial/endothelial barrier to spread along the vascular/lymphatic endothelium, and evading antiviral/antioxidant defences. An inflammation-driven "oxidative storm" alters the redox landscape, eliciting epithelial, endothelial, mitochondrial, metabolic, and immune dysfunction, and coagulopathy. Concomitantly reduced nitric oxide availability renders the sulfur-based redox circuitry vulnerable to oxidation, with eventual catastrophic failure in redox communication/regulation. Host nutrient limitations are crucial determinants of resilience at the individual and population level. Future Directions: While inflicting considerable damage to health and well-being, COVID-19 may provide the ultimate testing ground to improve the diagnosis and treatment of redox-related stress diseases. "Redox phenotyping" of patients to characterize whole-body RSI status as the disease progresses may inform new therapeutic approaches to regain redox balance, reduce mortality in COVID-19 and other redox diseases, and provide opportunities to tackle Long-COVID. Antioxid. Redox Signal. 35, 1226-1268.
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Affiliation(s)
- Andrew F Cumpstey
- Respiratory and Critical Care Research Group, Southampton NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom.,Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Anna D Clark
- Respiratory and Critical Care Research Group, Southampton NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom.,Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Jérôme Santolini
- Institute for Integrative Biology of the Cell (I2BC), Biochemistry, Biophysics and Structural Biology, CEA, CNRS, Université Paris-Sud, Universite Paris-Saclay, Gif-sur-Yvette, France
| | - Alan A Jackson
- Human Nutrition, University of Southampton and University Hospital Southampton, Southampton, United Kingdom
| | - Martin Feelisch
- Respiratory and Critical Care Research Group, Southampton NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom.,Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
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22
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Abdrabbo M, Birch CM, Brandt M, Cicigoi KA, Coffey SJ, Dolan CC, Dvorak H, Gehrke AC, Gerzema AEL, Hansen A, Henseler EJ, Huelsbeck AC, LaBerge B, Leavens CM, Le CN, Lindquist AC, Ludwig RK, Reynolds JH, Severson NJ, Sherman BA, Sillman HW, Smith MA, Smith MA, Snortheim MJ, Svaren LM, Vanderpas EC, Wackett MJ, Wozney AJ, Bhattacharyya S, Hati S. Vitamin D and COVID-19: A review on the role of vitamin D in preventing and reducing the severity of COVID-19 infection. Protein Sci 2021; 30:2206-2220. [PMID: 34558135 PMCID: PMC8521296 DOI: 10.1002/pro.4190] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/18/2021] [Accepted: 09/21/2021] [Indexed: 12/12/2022]
Abstract
Severe Acute Respiratory Syndrome Coronavirus‐2 (SARS‐CoV‐2) is a pathogenic coronavirus causing COVID‐19 infection. The interaction between the SARS‐CoV‐2 spike protein and the human receptor angiotensin‐converting enzyme 2, both of which contain several cysteine residues, is impacted by the disulfide‐thiol balance in the host cell. The host cell redox status is affected by oxidative stress due to the imbalance between the reactive oxygen/nitrogen species and antioxidants. Recent studies have shown that Vitamin D supplementation could reduce oxidative stress. It has also been proposed that vitamin D at physiological concentration has preventive effects on many viral infections, including COVID‐19. However, the molecular‐level picture of the interplay of vitamin D deficiency, oxidative stress, and the severity of COVID‐19 has remained unclear. Herein, we present a thorough review focusing on the possible molecular mechanism by which vitamin D could alter host cell redox status and block viral entry, thereby preventing COVID‐19 infection or reducing the severity of the disease.
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Affiliation(s)
- Mobeen Abdrabbo
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Cole M Birch
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Michael Brandt
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Kelsey A Cicigoi
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Stephen J Coffey
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Connor C Dolan
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Hannah Dvorak
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Ava C Gehrke
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Audrey E L Gerzema
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Abby Hansen
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Ethan J Henseler
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Alyssa C Huelsbeck
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Ben LaBerge
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Caterra M Leavens
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Christine N Le
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Allison C Lindquist
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Rickaela K Ludwig
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Jacob H Reynolds
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Nathaniel J Severson
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Brandon A Sherman
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Hunter W Sillman
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Michael A Smith
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Macey A Smith
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Marissa J Snortheim
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Levi M Svaren
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Emily C Vanderpas
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Miles J Wackett
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Alec J Wozney
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Sudeep Bhattacharyya
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
| | - Sanchita Hati
- Department of Chemistry and Biochemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin, USA
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23
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Ahn E, Lee J, Han J, Lee SM, Kwon KS, Hwang GS. Glutathione is an aging-related metabolic signature in the mouse kidney. Aging (Albany NY) 2021; 13:21009-21028. [PMID: 34492635 PMCID: PMC8457589 DOI: 10.18632/aging.203509] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 08/24/2021] [Indexed: 11/25/2022]
Abstract
The ability to maintain systemic metabolic homeostasis through various mechanisms represents a crucial strength of kidneys in the study of metabolic syndrome or aging. Moreover, age-associated kidney failure has been widely accepted. However, efforts to demonstrate aging-dependent renal metabolic rewiring have been limited. In the present study, we investigated aging-related renal metabolic determinants by integrating metabolomic and transcriptomic data sets from kidneys of young (3 months, n = 7 and 3 for respectively) and old (24 months, n = 8 and 3 for respectively) naive C57BL/6 male mice. Metabolite profiling analysis was conducted, followed by data processing via network and pathway analyses, to identify differential metabolites. In the aged group, the levels of glutathione and oxidized glutathione were significantly increased, but the levels of gamma-glutamyl amino acids, amino acids combined with the gamma-glutamyl moiety from glutathione by membrane transpeptidases, and circulating glutathione levels were decreased. In transcriptomic analysis, differential expression of metabolic enzymes is consistent with the hypothesis of aging-dependent rewiring in renal glutathione metabolism; pathway and network analyses further revealed the increased expression of immune-related genes in the aged group. Collectively, our integrative analysis results revealed that defective renal glutathione metabolism is a signature of renal aging. Therefore, we hypothesize that restraining renal glutathione metabolism might alleviate or delay age-associated renal metabolic deterioration, and aberrant activation of the renal immune system.
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Affiliation(s)
- Eunyong Ahn
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seodaemun-Gu, Seoul 03759, Korea
| | - Jueun Lee
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seodaemun-Gu, Seoul 03759, Korea
| | - Jisu Han
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seodaemun-Gu, Seoul 03759, Korea
| | - Seung-Min Lee
- Aging Research Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-Gu, Daejeon 34141, Korea
| | - Ki-Sun Kwon
- Aging Research Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-Gu, Daejeon 34141, Korea
- Aventi Inc., Yuseong-Gu, Daejeon 34141, Korea
| | - Geum-Sook Hwang
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seodaemun-Gu, Seoul 03759, Korea
- Department of Chemistry and Nano Science, Ewha Womans University, Seodaemun-Gu, Seoul 03760, Korea
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24
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Dai J, Teng X, Jin S, Wu Y. The Antiviral Roles of Hydrogen Sulfide by Blocking the Interaction between SARS-CoV-2 and Its Potential Cell Surface Receptors. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:7866992. [PMID: 34497683 PMCID: PMC8421161 DOI: 10.1155/2021/7866992] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 08/18/2021] [Indexed: 02/06/2023]
Abstract
The ongoing coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is posing a great threat to the global economy and public health security. Together with the acknowledged angiotensin-converting enzyme 2, glucose-regulated protein 78, transferrin receptor, AXL, kidney injury molecule-1, and neuropilin 1 are also identified as potential receptors to mediate SARS-CoV-2 infection. Therefore, how to inhibit or delay the binding of SARS-CoV-2 with the abovementioned receptors is a key step for the prevention and treatment of COVID-19. As the third gasotransmitter, hydrogen sulfide (H2S) plays an important role in many physiological and pathophysiological processes. Recently, survivors were reported to have significantly higher H2S levels in COVID-19 patients, and mortality was significantly greater among patients with decreased H2S levels. Considering that the beneficial role of H2S against COVID-19 and COVID-19-induced comorbidities and multiorgan damage has been well-examined and reported in some excellent reviews, this review will discuss the recent findings on the potential receptors of SARS-CoV-2 and how H2S modulates the above receptors, in turn blocking SARS-CoV-2 entry into host cells.
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Affiliation(s)
- Jing Dai
- Department of Clinical Diagnostics, Hebei Medical University, Hebei 050017, China
| | - Xu Teng
- Department of Physiology, Hebei Medical University, Hebei 050017, China
| | - Sheng Jin
- Department of Physiology, Hebei Medical University, Hebei 050017, China
| | - Yuming Wu
- Department of Physiology, Hebei Medical University, Hebei 050017, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Hebei 050017, China
- Key Laboratory of Vascular Medicine of Hebei Province, Hebei 050017, China
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25
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Abstract
There is a possible role for oxidative stress, a state characterized by an altered balance between the production of free radicals or reactive oxygen species (ROS) and antioxidant defences, in coronavirus disease 2019 (COVID-19), the genesis of which is quite complex. Excessive oxidative stress could be responsible for the alveolar damage, thrombosis, and red blood cell dysregulation observed in COVID-19. Apparently, deficiency of glutathione (GSH), a low-molecular-weight thiol that is the most important non-enzymatic antioxidant molecule and has the potential to keep the cytokine storm in check, is a plausible explanation for the severe manifestations and death in COVID-19 patients. Thiol drugs, which are considered mucolytic, also possess potent antioxidant and anti-inflammatory properties. They exhibit antibacterial activity against a variety of medically important bacteria and may be an effective strategy against influenza virus infection. The importance of oxidative stress during COVID-19 and the various pharmacological characteristics of thiol-based drugs suggest a possible role of thiols in the treatment of COVID-19. Oral and intravenous GSH, as well as GSH precursors such as N-acetylcysteine (NAC), or drugs containing the thiol moiety (erdosteine) may represent a novel therapeutic approach to block NF-kB and address the cytokine storm syndrome and respiratory distress observed in COVID-19 pneumonia patients
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26
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Abstract
Although most patients recover from acute COVID-19, some experience postacute sequelae of severe acute respiratory syndrome coronavirus 2 infection (PASC). One subgroup of PASC is a syndrome called "long COVID-19," reminiscent of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). ME/CFS is a debilitating condition, often triggered by viral and bacterial infections, leading to years-long debilitating symptoms including profound fatigue, postexertional malaise, unrefreshing sleep, cognitive deficits, and orthostatic intolerance. Some are skeptical that either ME/CFS or long COVID-19 involves underlying biological abnormalities. However, in this review, we summarize the evidence that people with acute COVID-19 and with ME/CFS have biological abnormalities including redox imbalance, systemic inflammation and neuroinflammation, an impaired ability to generate adenosine triphosphate, and a general hypometabolic state. These phenomena have not yet been well studied in people with long COVID-19, and each of them has been reported in other diseases as well, particularly neurological diseases. We also examine the bidirectional relationship between redox imbalance, inflammation, energy metabolic deficits, and a hypometabolic state. We speculate as to what may be causing these abnormalities. Thus, understanding the molecular underpinnings of both PASC and ME/CFS may lead to the development of novel therapeutics.
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27
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Bartolini D, Stabile AM, Vacca C, Pistilli A, Rende M, Gioiello A, Cruciani G, Galli F. Endoplasmic reticulum stress and NF-kB activation in SARS-CoV-2 infected cells and their response to antiviral therapy. IUBMB Life 2021; 74:93-100. [PMID: 34390301 PMCID: PMC8426894 DOI: 10.1002/iub.2537] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 07/22/2021] [Accepted: 07/23/2021] [Indexed: 11/08/2022]
Abstract
Unfolded protein response (UPR) and endoplasmic reticulum (ER) stress are aspects of SARS-CoV-2-host cell interaction with proposed role in the cytopathic and inflammatory pathogenesis of this viral infection. The role of the NF-kB pathway in these cellular processes remains poorly characterized. When investigated in VERO-E6 cells, SARS-CoV-2 infection was found to markedly stimulate NF-kB protein expression and activity. NF-kB activation occurs early in the infection process (6 hpi) and it is associated with increased MAPK signaling and expression of the UPR inducer IRE-1α. These signal transduction processes characterize the cellular stress response to the virus promoting a pro-inflammatory environment and caspase activation in the host cell. Inhibition of viral replication by the viral protease inhibitor Nelfinavir reverts all these molecular changes also stimulating c-Jun expression, a key component of the JNK/AP-1 pathway with important role in the IRE-1α-mediated transcriptional regulation of stress response genes with anti-inflammatory and cytoprotection function. The present study demonstrates that UPR signaling and its interaction with cellular MAPKs and the NF-kB activity are important aspects of SARS-CoV-2-host cell interaction that deserve further investigation to identify more efficient therapies for this viral infection.
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Affiliation(s)
- Desirée Bartolini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy.,Department of Medicine and Surgery, Section of Human, Clinical and Forensic Anatomy, University of Perugia, Perugia, Italy
| | - Anna Maria Stabile
- Department of Medicine and Surgery, Section of Human, Clinical and Forensic Anatomy, University of Perugia, Perugia, Italy
| | - Carmine Vacca
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Alessandra Pistilli
- Department of Medicine and Surgery, Section of Human, Clinical and Forensic Anatomy, University of Perugia, Perugia, Italy
| | - Mario Rende
- Department of Medicine and Surgery, Section of Human, Clinical and Forensic Anatomy, University of Perugia, Perugia, Italy
| | - Antimo Gioiello
- Applied Biochemistry and Nutrition Lab, Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Gabriele Cruciani
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Francesco Galli
- Applied Biochemistry and Nutrition Lab, Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
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28
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Kosanovic T, Sagic D, Djukic V, Pljesa-Ercegovac M, Savic-Radojevic A, Bukumiric Z, Lalosevic M, Djordjevic M, Coric V, Simic T. Time Course of Redox Biomarkers in COVID-19 Pneumonia: Relation with Inflammatory, Multiorgan Impairment Biomarkers and CT Findings. Antioxidants (Basel) 2021; 10:antiox10071126. [PMID: 34356359 PMCID: PMC8301049 DOI: 10.3390/antiox10071126] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/07/2021] [Accepted: 07/09/2021] [Indexed: 12/24/2022] Open
Abstract
Although the original data on systemic oxidative stress in COVID-19 patients have recently started to emerge, we are still far from a complete profile of changes in patients' redox homeostasis. We aimed to assess the extent of oxidative damage of proteins, lipids and DNA during the course of acute disease, as well as their association with CT pulmonary patterns. In order to obtain more insight into the origin of the systemic oxidative stress, the observed parameters were correlated with inflammatory biomarkers and biomarkers of multiorgan impairment. In this prospective study, we included 58 patients admitted between July and October 2020 with COVID-19 pneumonia. Significant changes in malondialdehyde, 8-hydroxy-2'-deoxyguanosine and advanced oxidation protein products levels exist during the course of COVID-19. Special emphasis should be placed on the fact that the pattern of changes differs between non-hospitalized and hospitalized individuals. Our results point to the time-dependent relation of oxidative stress parameters with inflammatory and multiorgan impairment biomarkers, as well as pulmonary patterns in COVID-19 pneumonia patients. Correlation between redox biomarkers and immunological or multiorgan impairment biomarkers, as well as pulmonary CT pattern, confirms the suggested involvement of neutrophils networks, IL-6 production, along with different organ/tissue involvement in systemic oxidative stress in COVID-19.
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Affiliation(s)
- Tijana Kosanovic
- Radiology Department, The University Hospital ‘Dr. Dragisa Misovic- Dedinje’, 11000 Belgrade, Serbia; (T.K.); (V.D.); (M.L.); (M.D.)
| | - Dragan Sagic
- Institute for Cardiovascular Diseases “Dedinje”, 11000 Belgrade, Serbia;
| | - Vladimir Djukic
- Radiology Department, The University Hospital ‘Dr. Dragisa Misovic- Dedinje’, 11000 Belgrade, Serbia; (T.K.); (V.D.); (M.L.); (M.D.)
| | - Marija Pljesa-Ercegovac
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (M.P.-E.); (A.S.-R.)
| | - Ana Savic-Radojevic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (M.P.-E.); (A.S.-R.)
| | - Zoran Bukumiric
- Institute of Medical Statistics and Informatics, School of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Miodrag Lalosevic
- Radiology Department, The University Hospital ‘Dr. Dragisa Misovic- Dedinje’, 11000 Belgrade, Serbia; (T.K.); (V.D.); (M.L.); (M.D.)
| | - Marjana Djordjevic
- Radiology Department, The University Hospital ‘Dr. Dragisa Misovic- Dedinje’, 11000 Belgrade, Serbia; (T.K.); (V.D.); (M.L.); (M.D.)
| | - Vesna Coric
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (M.P.-E.); (A.S.-R.)
- Correspondence: (V.C.); (T.S.); Tel.: +381-113643273 (V.C.); +381-113643250 (T.S.)
| | - Tatjana Simic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (M.P.-E.); (A.S.-R.)
- Serbian Academy of Science and Arts, 11000 Belgrade, Serbia
- Correspondence: (V.C.); (T.S.); Tel.: +381-113643273 (V.C.); +381-113643250 (T.S.)
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Mete AÖ, Koçak K, Saracaloglu A, Demiryürek S, Altınbaş Ö, Demiryürek AT. Effects of antiviral drug therapy on dynamic thiol/disulphide homeostasis and nitric oxide levels in COVID-19 patients. Eur J Pharmacol 2021; 907:174306. [PMID: 34245744 PMCID: PMC8262407 DOI: 10.1016/j.ejphar.2021.174306] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 06/29/2021] [Accepted: 07/05/2021] [Indexed: 01/01/2023]
Abstract
The novel coronavirus disease 2019 (COVID-19) has led to a serious global pandemic. Although an oxidative stress imbalance occurs in COVID-19 patients, the contributions of thiol/disulphide homeostasis and nitric oxide (NO) generation to the pathogenesis of COVID-19 have been poorly identified. Therefore, the aim of this study was to evaluate the effects of antiviral drug therapy on the serum dynamics of thiol/disulphide homeostasis and NO levels in COVID-19 patients. A total of 50 adult patients with COVID-19 and 43 sex-matched healthy control subjects were enrolled in this prospective study. Venous blood samples were collected immediately on admission to the hospital within 24 h after the diagnosis (pre-treatment) and at the 15th day of drug therapy (post-treatment). Serum native thiol and total thiol levels were measured, and the amounts of dynamic disulphide bonds and related ratios were calculated. The average pre-treatment total and native thiol levels were significantly lower than the post-treatment values (P < 0.001 for all). We observed no significant changes in disulphide levels or disulphide/total thiol, disulphide/native thiol, or native thiol/total thiol ratios between pre- and post-treatments. There was also a significant increase in serum NO levels in the pre-treatment values when compared to control (P < 0.001) and post-treatment measurements (P < 0.01). Our results strongly suggest that thiol/disulphide homeostasis and nitrosative stress can contribute to the pathogenesis of COVID-19. This study was the first to show that antiviral drug therapy can prevent the depletion in serum thiol levels and decrease serum NO levels in COVID-19 patients.
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Affiliation(s)
- Ayşe Özlem Mete
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey.
| | - Kübra Koçak
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
| | - Ahmet Saracaloglu
- Department of Medical Pharmacology, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
| | - Seniz Demiryürek
- Department of Physiology, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
| | - Özgür Altınbaş
- Department of Operating Room Services, Vocational School of Health Services, Gaziantep University, Gaziantep, Turkey
| | - Abdullah T Demiryürek
- Department of Medical Pharmacology, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey; Vocational School of Health Services, Gaziantep University, Gaziantep, Turkey
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SARS-CoV2 infection impairs the metabolism and redox function of cellular glutathione. Redox Biol 2021; 45:102041. [PMID: 34146958 PMCID: PMC8190457 DOI: 10.1016/j.redox.2021.102041] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/02/2021] [Accepted: 06/07/2021] [Indexed: 01/01/2023] Open
Abstract
Viral infections sustain their replication cycle promoting a pro-oxidant environment in the host cell. In this context, specific alterations of the levels and homeostatic function of the tripeptide glutathione have been reported to play a causal role in the pro-oxidant and cytopathic effects (CPE) of the virus. In this study, these aspects were investigated for the first time in SARS-CoV2-infected Vero E6 cells, a reliable and well-characterized in vitro model of this infection. SARS-CoV2 markedly decreased the levels of cellular thiols, essentially lowering the reduced form of glutathione (GSH). Such an important defect occurred early in the CPE process (in the first 24 hpi). Thiol analysis in N-acetyl-Cys (NAC)-treated cells and membrane transporter expression data demonstrated that both a lowered uptake of the GSH biosynthesis precursor Cys and an increased efflux of cellular thiols, could play a role in this context. Increased levels of oxidized glutathione (GSSG) and protein glutathionylation were also observed along with upregulation of the ER stress marker PERK. The antiviral drugs Remdesivir (Rem) and Nelfinavir (Nel) influenced these changes at different levels, essentially confirming the importance or blocking viral replication to prevent GSH depletion in the host cell. Accordingly, Nel, the most potent antiviral in our in vitro study, produced a timely activation of Nrf2 transcription factor and a GSH enhancing response that synergized with NAC to restore GSH levels in the infected cells. Despite poor in vitro antiviral potency and GSH enhancing function, Rem treatment was found to prevent the SARS-CoV2-induced glutathionylation of cellular proteins. In conclusion, SARS-CoV2 infection impairs the metabolism of cellular glutathione. NAC and the antiviral Nel can prevent such defect in vitro.
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Simić T. Significance of thiol-disulfide balance in SARS-CoV-2 infection. MEDICINSKI PODMLADAK 2021. [DOI: 10.5937/mp72-32874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Studies of the molecular mechanisms regarding interaction of different viruses with receptors on the host cell surface have shown that the viral entry depends on the specific relationship between free thiol (SH) groups and disulfides on the virus surface, as well as the thiol disulfide balance on the host cell surface. The presence of oxidizing compounds or alkylating agents, which disturb the thiol-disulfide balance on the surface of the virus, can also affect its infectious potential. Disturbed thiol-disulfide balance may also influence protein-protein interactions between SARS-CoV-2 protein S and ACE2 receptors of the host cell. This review presents the basic mechanisms of maintaining intracellular and extracellular thiol disulfide balance and previous experimental and clinical evidence in favor of impaired balance in SARS-CoV-2 infection. Besides, the results of the clinical application or experimental analysis of compounds that induce changes in the thiol disulfide balance towards reduction of disulfide bridges in proteins of interest in COVID-19 infection are presented.
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