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Pavuluri H, Bakhtiary Z, Panner Selvam MK, Hellstrom WJG. Oxidative Stress-Associated Male Infertility: Current Diagnostic and Therapeutic Approaches. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:1008. [PMID: 38929625 PMCID: PMC11205999 DOI: 10.3390/medicina60061008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 06/11/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024]
Abstract
Infertility is a prevalent global issue affecting approximately 17.5% of adults, with sole male factor contributing to 20-30% of cases. Oxidative stress (OS) is a critical factor in male infertility, disrupting the balance between reactive oxygen species (ROS) and antioxidants. This imbalance detrimentally affects sperm function and viability, ultimately impairing fertility. OS also triggers molecular changes in sperm, including DNA damage, lipid peroxidation, and alterations in protein expression, further compromising sperm functionality and potential fertilization. Diagnostic tools discussed in this review offer insights into OS markers, antioxidant levels, and intracellular ROS concentrations. By accurately assessing these parameters, clinicians can diagnose male infertility more effectively and thus tailor treatment plans to individual patients. Additionally, this review explores various treatment options for males with OS-associated infertility, such as empirical drugs, antioxidants, nanoantioxidants, and lifestyle modifications. By addressing the root causes of male infertility and implementing targeted interventions, clinicians can optimize treatment outcomes and enhance the chances of conception for couples struggling with infertility.
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Affiliation(s)
| | | | | | - Wayne J. G. Hellstrom
- Department of Urology, Tulane University School of Medicine, New Orleans, LA 70112, USA; (H.P.); (Z.B.); (M.K.P.S.)
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2
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López-Valverde N, López-Valverde A, Montero J, Rodríguez C, Macedo de Sousa B, Aragoneses JM. Antioxidant, anti-inflammatory and antimicrobial activity of natural products in periodontal disease: a comprehensive review. Front Bioeng Biotechnol 2023; 11:1226907. [PMID: 37600299 PMCID: PMC10435350 DOI: 10.3389/fbioe.2023.1226907] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 07/27/2023] [Indexed: 08/22/2023] Open
Abstract
Periodontal diseases (PD) are common chronic inflammatory oral pathologies that are strongly linked to others not found in the mouth cavity. The immune system mediates the host response, which includes the upregulation of proinflammatory cytokines, metalloproteinases, and reactive oxygen species (ROS); the latter may play an important role in the establishment and progression of inflammatory diseases, particularly periodontal disease, via the development of oxidative stress (OS). Natural antioxidants have powerful anti-inflammatory properties, and some can reduce serum levels of key PD indicators such tumor necrosis factor (TNF) and interleukin IL-1. This review compiles, through a thorough literature analysis, the antioxidant, anti-inflammatory, and antibacterial effects of a variety of natural products, as well as their therapeutic potential in the treatment of PD.
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Affiliation(s)
- Nansi López-Valverde
- Department of Medicine and Medical Specialties, Faculty of Health Sciences, Universidad Alcalá de Henares, Madrid, Spain
- Instituto de Investigación Biomédica de Salamanca (IBSAL), Madrid, Spain
| | - Antonio López-Valverde
- Department of Surgery, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, Salamanca, Spain
| | - Javier Montero
- Department of Surgery, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, Salamanca, Spain
| | - Cinthia Rodríguez
- Department of Dentistry, Universidad Federico Henríquez y Carvajal, Santo Domingo, Dominican Republic
| | - Bruno Macedo de Sousa
- Institute for Occlusion and Orofacial Pain Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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3
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Macáková K, Pšenková P, Šupčíková N, Vlková B, Celec P, Záhumenský J. Effect of SARS-CoV-2 Infection and COVID-19 Vaccination on Oxidative Status of Human Placenta: A Preliminary Study. Antioxidants (Basel) 2023; 12:1403. [PMID: 37507942 PMCID: PMC10376152 DOI: 10.3390/antiox12071403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 07/01/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023] Open
Abstract
Infection with SARS-CoV-2 during pregnancy increases the risk of pregnancy complications associated with inflammation, which could lead to oxidative stress in the placenta. Whether vaccination against COVID-19 has any effect is unclear. This study aimed to analyze the effects of SARS-CoV-2 infection and vaccination against COVID-19 during pregnancy on oxidative stress in the placenta and on extracellular DNA (ecDNA) in umbilical cord plasma. Placenta samples from healthy uninfected and unvaccinated control patients who recovered from COVID-19 and women vaccinated against COVID-19 during pregnancy were collected. Biomarkers of oxidative damage and antioxidant capacity were assessed in the placenta homogenates. EcDNA and deoxyribonuclease activity were quantified in umbilical cord plasma using real-time PCR and the single radial enzyme diffusion method, respectively. Markers of oxidative damage to lipids and proteins as well as antioxidant capacity in the placenta did not differ between the study groups. No differences were observed in total, nuclear or mitochondrial ecDNA, or deoxyribonuclease activity in the umbilical cord plasma. Taking into account the limits of a small observational study, our results suggest that the infection with SARS-CoV-2 and vaccination against COVID-19 do not induce any major disturbances in the balance between the production of free radicals and antioxidant activity in the placenta. This is in line with the minor effects on fetal outcomes and ecDNA as a suggested marker of fetal well-being.
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Affiliation(s)
- Kristína Macáková
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, 81108 Bratislava, Slovakia
| | - Petra Pšenková
- 2nd Department of Gynaecology and Obstetrics, University Hospital Bratislava and Comenius University, 82606 Bratislava, Slovakia
| | - Nadja Šupčíková
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, 81108 Bratislava, Slovakia
| | - Barbora Vlková
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, 81108 Bratislava, Slovakia
| | - Peter Celec
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, 81108 Bratislava, Slovakia
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, 81108 Bratislava, Slovakia
| | - Jozef Záhumenský
- 2nd Department of Gynaecology and Obstetrics, University Hospital Bratislava and Comenius University, 82606 Bratislava, Slovakia
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4
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Kurokawa H, Marella TK, Matsui H, Kuroki Y, Watanabe MM. Therapeutic Potential of Seaweed-Derived Laminaran: Attenuation of Clinical Drug Cytotoxicity and Reactive Oxygen Species Scavenging. Antioxidants (Basel) 2023; 12:1328. [PMID: 37507868 PMCID: PMC10376328 DOI: 10.3390/antiox12071328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 07/30/2023] Open
Abstract
β-glucan has been shown to be effective for several diseases such as immune regulation and blood pressure suppression. Seaweed contains a β-1,3/1,6-glucan called laminaran. The present commercial source of β-glucan is black yeast; however, a fermentation process using organic carbon substrates makes production unsustainable, whereas macroalgae provide a sustainable alternative with the use of CO2 and seawater as growth substrates. However, bioactivity studies on laminaran are limited. We aimed to evaluate whether laminaran can scavenge reactive oxygen species (ROS) and attenuate cytotoxicity caused by clinical drugs such as indomethacin (Ind) and dabigatran (Dab). Electron spin resonance assay revealed that laminaran scavenged singlet oxygen (1O2) and superoxide anions (O2•-) directly but did not scavenge hydroxyl radicals (•OH). Mitochondrial ROS detection dye showed that laminaran scavenged mitochondrial O2•- produced upon administration of Ind or Dab. Moreover, significant reductions in •OH and peroxynitrate (ONOO-) levels were observed. Since •OH and ONOO- are generated from O2•- in the cells, laminaran could indirectly suppress the generation of •OH and ONOO- via the removal of O2•-. Both Ind and Dab induce cell injury via ROS production. Laminaran attenuated the cytotoxicity derived from these drugs and may represent a functional food with anti-aging and disease prevention properties.
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Affiliation(s)
- Hiromi Kurokawa
- Algae Biomass Energy System R&D Center, University of Tsukuba, Tennodai 1-1-1, Tsukuba 3058572, Japan
- Faculty of Medicine, University of Tsukuba, Tennodai 1-1-1, Tsukuba 3058575, Japan
| | - Thomas Kiran Marella
- Algae Biomass Energy System R&D Center, University of Tsukuba, Tennodai 1-1-1, Tsukuba 3058572, Japan
- Faculty of Medicine, University of Tsukuba, Tennodai 1-1-1, Tsukuba 3058575, Japan
| | - Hirofumi Matsui
- Algae Biomass Energy System R&D Center, University of Tsukuba, Tennodai 1-1-1, Tsukuba 3058572, Japan
- Faculty of Medicine, University of Tsukuba, Tennodai 1-1-1, Tsukuba 3058575, Japan
| | - Yutaka Kuroki
- Delightex Pte. Ltd., 230 Victoria Street, #15-01 Bugis, Junction Towers, Singapore 188024, Singapore
| | - Makoto M Watanabe
- Algae Biomass Energy System R&D Center, University of Tsukuba, Tennodai 1-1-1, Tsukuba 3058572, Japan
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Guabello G, Zuffetti F, Ravidà A, Deflorian M, Carta G, Saleh MHA, Serroni M, Pommer B, Watzek G, Francetti L, Testori T. Avoiding implant-related complications in medically compromised patients with or without unhealthy lifestyle/Elevated oxidative stress. Periodontol 2000 2023; 92:329-349. [PMID: 37350348 DOI: 10.1111/prd.12503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/11/2023] [Accepted: 04/26/2023] [Indexed: 06/24/2023]
Abstract
Increased human life expectancy broadens the alternatives for missing teeth and played a role in the widespread use of dental implants and related augmentation procedures for the aging population. Though, many of these patients may have one or more diseases. These systemic conditions may directly lead to surgical complications, compromise implant/bone healing, or influence long-term peri-implant health and its response to biologic nuisances. Offering patients credible expectations regarding intra- and postoperative complications and therapeutic prognosis is an ethical and legal obligation. Clear identification of potential types of adverse effects, complications, or errors is important for decision-making processes as they may be related to different local, systemic, and technical aspects. Therefore, the present review structures the underlying biological mechanisms, clinical evidence, and clinical recommendations for the most common systemic risk factors for implant-related complications.
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Affiliation(s)
- Gregorio Guabello
- Endocrinology Unit, IRCCS Galeazzi Sant'Ambrogio Hospital, Milan, Italy
| | - Francesco Zuffetti
- Section of Implant Dentistry and Oral Rehabilitation, IRCCS Galeazzi Sant'Ambrogio Hospital, Dental Clinic, Milan, Italy
| | - Andrea Ravidà
- Department of Periodontics and Preventive Dentistry, University of Pittsburgh School of Dental Medicine, Pittsburgh, Pennsylvania, USA
| | - Matteo Deflorian
- Section of Implant Dentistry and Oral Rehabilitation, IRCCS Galeazzi Sant'Ambrogio Hospital, Dental Clinic, Milan, Italy
| | - Giorgio Carta
- Argo Academy International Research Bologna, Bologna, Italy
- Private Practice, Bologna, Italy
- Lake Como Institute, Como, Italy
| | - Muhammad H A Saleh
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Matteo Serroni
- Department of Innovative Technologies in Medicine & Dentistry, University 'G. D'Annunzio', Chieti-Pescara, Italy
| | - Bernhard Pommer
- Academy for Oral Implantology, Vienna, Austria
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
| | | | - Luca Francetti
- IRCCS Galeazzi Sant'Ambrogio Hospital, Dental Clinic, Milan, Italy
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
| | - Tiziano Testori
- Section of Implant Dentistry and Oral Rehabilitation, IRCCS Galeazzi Sant'Ambrogio Hospital, Dental Clinic, Milan, Italy
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA
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6
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Jamshidi M, Walcarius A, Thangamuthu M, Mehrgardi M, Ranjbar A. Electrochemical approaches based on micro- and nanomaterials for diagnosing oxidative stress. Mikrochim Acta 2023; 190:117. [PMID: 36879086 DOI: 10.1007/s00604-023-05681-7] [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: 11/04/2022] [Accepted: 01/30/2023] [Indexed: 03/08/2023]
Abstract
This review article comprehensively discusses the various electrochemical approaches for measuring and detecting oxidative stress biomarkers and enzymes, particularly reactive oxygen/nitrogen species, highly reactive chemical molecules, which are the byproducts of normal aerobic metabolism and can oxidize cellular components such as DNA, lipids, and proteins. First, we address the latest research on the electrochemical determination of reactive oxygen species generating enzymes, followed by detection of oxidative stress biomarkers, and final determination of total antioxidant activity (endogenous and exogenous). Most electrochemical sensing platforms exploited the unique properties of micro- and nanomaterials such as carbon nanomaterials, metal or metal oxide nanoparticles (NPs), conductive polymers and metal-nano compounds, which have been mainly used for enhancing the electrocatalytic response of sensors/biosensors. The performance of the electroanalytical devices commonly measured by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) in terms of detection limit, sensitivity, and linear range of detection is also discussed. This article provides a comprehensive review of electrode fabrication, characterization and evaluation of their performances, which are assisting to design and manufacture an appropriate electrochemical (bio)sensor for medical and clinical applications. The key points such as accessibility, affordability, rapidity, low cost, and high sensitivity of the electrochemical sensing devices are also highlighted for the diagnosis of oxidative stress. Overall, this review brings a timely discussion on past and current approaches for developing electrochemical sensors and biosensors mainly based on micro and nanomaterials for the diagnosis of oxidative stress.
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Affiliation(s)
- Mahdi Jamshidi
- Department of Toxicology and Pharmacology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran.,Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Alain Walcarius
- Laboratory of Physical Chemistry and Microbiology for Materials and the Environment, Université de Lorraine, CNRS, LCPME, Nancy, France
| | - Madasamy Thangamuthu
- Department of Chemical Engineering, University College London, Torrington Place, London, WC1E 7JE, UK
| | - Masoud Mehrgardi
- Department of Chemistry, University of Isfahan, Isfahan, 81746-73441, Iran
| | - Akram Ranjbar
- Department of Toxicology and Pharmacology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran. .,Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
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7
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Applications of Antioxidants in Dental Procedures. Antioxidants (Basel) 2022; 11:antiox11122492. [PMID: 36552699 PMCID: PMC9774737 DOI: 10.3390/antiox11122492] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/12/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
As people are paying more and more attention to dental health, various dental treatment procedures have emerged, such as tooth bleaching, dental implants, and dental restorations. However, a large number of free radicals are typically produced during the dental procedures. When the imbalance in distribution of reactive oxygen species (ROS) is induced, oxidative stress coupled with oxidative damage occurs. Oral inflammations such as those in periodontitis and pulpitis are also unavoidable. Therefore, the applications of exogenous antioxidants in oral environment have been proposed. In this article, the origin of ROS during dental procedures, the types of antioxidants, and their working mechanisms are reviewed. Additionally, antioxidants delivery in the complicated dental procedures and their feasibility for clinical applications are also covered. Finally, the importance of safety assessment of these materials and future work to take the challenge in antioxidants development are proposed for perspective.
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8
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Pigazzani F, Gorni D, Dyar KA, Pedrelli M, Kennedy G, Costantino G, Bruno A, Mackenzie I, MacDonald TM, Tietge UJF, George J. The Prognostic Value of Derivatives-Reactive Oxygen Metabolites (d-ROMs) for Cardiovascular Disease Events and Mortality: A Review. Antioxidants (Basel) 2022; 11:antiox11081541. [PMID: 36009260 PMCID: PMC9405117 DOI: 10.3390/antiox11081541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 11/16/2022] Open
Abstract
Oxidative stress participates in the development and exacerbation of cardiovascular diseases (CVD). The ability to promptly quantify an imbalance in an individual reductive-oxidative (RedOx) state could improve cardiovascular risk assessment and management. Derivatives-reactive oxygen metabolites (d-ROMs) are an emerging biomarker of oxidative stress quantifiable in minutes through standard biochemical analysers or by a bedside point-of-care test. The current review evaluates available data on the prognostic value of d-ROMs for CVD events and mortality in individuals with known and unknown CVD. Outcome studies involving small and large cohorts were analysed and hazard ratio, risk ratio, odds ratio, and mean differences were used as measures of effect. High d-ROM plasma levels were found to be an independent predictor of CVD events and mortality. Risk begins increasing at d-ROM levels higher than 340 UCARR and rises considerably above 400 UCARR. Conversely, low d-ROM plasma levels are a good negative predictor for CVD events in patients with coronary artery disease and heart failure. Moreover, combining d-ROMs with other relevant biomarkers routinely used in clinical practice might support a more precise cardiovascular risk assessment. We conclude that d-ROMs represent an emerging oxidative-stress-related biomarker with the potential for better risk stratification both in primary and secondary cardiovascular prevention.
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Affiliation(s)
- Filippo Pigazzani
- MEMO Research, Division of Molecular and Clinical Medicine, University of Dundee, Dundee DD2 1GZ, UK
- Division of Molecular and Clinical Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee DD2 1GZ, UK
- Correspondence: (F.P.); (A.B.)
| | - Davide Gorni
- Research and Development Department, H&D S.r.l., 43124 Parma, Italy
| | - Kenneth A. Dyar
- German Center for Diabetes Research (DZD), 40225 Neuherberg, Germany
- Metabolic Physiology, Institute for Diabetes and Cancer (IDC), Helmholtz Diabetes Center, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Matteo Pedrelli
- CardioMetabol Unit, Department of Laboratory Medicine and Department of Medicine, Karolinska Institutet, 17177 Huddinge, Sweden
- Medicine Unit Endocrinology, Theme Inflammation and Ageing, Karolinska University Hospital, 17177 Stockholm, Sweden
| | - Gwen Kennedy
- Division of Population Health and Genomics, Ninewells Hospital and Medical School, University of Dundee, Dundee DD2 1GZ, UK
| | | | - Agostino Bruno
- Research and Development Department, Cor.Con. International S.r.l., 43124 Parma, Italy
- Correspondence: (F.P.); (A.B.)
| | - Isla Mackenzie
- MEMO Research, Division of Molecular and Clinical Medicine, University of Dundee, Dundee DD2 1GZ, UK
- Division of Molecular and Clinical Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee DD2 1GZ, UK
| | - Thomas M. MacDonald
- MEMO Research, Division of Molecular and Clinical Medicine, University of Dundee, Dundee DD2 1GZ, UK
- Division of Molecular and Clinical Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee DD2 1GZ, UK
| | - Uwe J. F. Tietge
- Division of Clinical Chemistry, Department of Laboratory Medicine, Karolinska Institutet, 17177 Stockholm, Sweden
- Clinical Chemistry, Karolinska University Laboratory, Karolinska University Hospital, 17177 Stockholm, Sweden
| | - Jacob George
- Division of Molecular and Clinical Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee DD2 1GZ, UK
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Yang F, Ren L, Liu T, Lu X, Liu C, Yu Y, Chen Z, Long Y. Cyclovirobuxine D Brain-Targeted Liposomes Improve Cerebral Ischemia-Reperfusion Injury via Anti-Oxidant Stress and Activating Autophagy. J Biomed Nanotechnol 2022; 18:1146-1157. [PMID: 35854463 DOI: 10.1166/jbn.2022.3327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
One of the main issues faced by nervous system diseases is that drugs are difficult to enter the brain. The previous study suggested that Cyclovirobuxine D (CVBD) encapsulated in Angiopep-conjugated Polysorbate 80-Coated Liposomes showed a better brain targeting by intranasal administration. Therefore, this study concentrated on the protection and mechanism of CVBD brain-targeted liposomes in treating CIRI. Middle cerebral artery occlusion-reperfusion induced CIRI model rats to explore the protective effect of CVBD brain-targeted liposome on CIRI. Moreover, the protective effect of CVBD liposomes on OGD/R-injured HT22 cells was examined by cell fusion degree, cell proliferation curve and cell viability. OGD/R-injured HT22 cell was infected by mRFP-GFP-LC3 adenovirus. The autophagosome and autophagy flow were observed by laser confocal microscopy, and autophagy-related protein expressions were analyzed by Western blot. The classic autophagy inhibitor, chloroquine, was used to explore the autophagy-regulatedmechanism of CVBD brain-targeted liposomes in treating CIRI. CVBD liposomes increased cell viability and decreased ROS level, improved oxidative stress protein expressions and activated autophagy in vitro. Furthermore, CVBD liposomes reversed the decrease of cell viability, increase of ROS level, and reduction of protein expressions associated with anti-oxidative stress and autophagy induced by chloroquine. Collectively, CVBD liposomes inhibited CIRI via regulating oxidative stress and enhancing autophagy level in vivo and in vitro.
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Affiliation(s)
- Fang Yang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Lingzhi Ren
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Tuo Liu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Xiangyi Lu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Chang Liu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Yang Yu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Zhilian Chen
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong, China
| | - Yongling Long
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
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10
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Rojas D, Hernández-Rodríguez JF, Della Pelle F, Escarpa A, Compagnone D. New trends in enzyme-free electrochemical sensing of ROS/RNS. Application to live cell analysis. Mikrochim Acta 2022; 189:102. [DOI: 10.1007/s00604-022-05185-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 01/11/2022] [Indexed: 12/31/2022]
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11
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Huang P, Wan H, Shao C, Li C, Zhang L, He Y. Recent Advances in Chinese Herbal Medicine for Cerebral Ischemic Reperfusion Injury. Front Pharmacol 2022; 12:688596. [PMID: 35111041 PMCID: PMC8801784 DOI: 10.3389/fphar.2021.688596] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 11/29/2021] [Indexed: 12/15/2022] Open
Abstract
Cerebral ischemic reperfusion injury (CI/RI) is a critical factor that leads to a poor prognosis in patients with ischemic stroke. It is an extremely complicated pathological process that is clinically characterized by high rates of disability and mortality. Current available treatments for CI/RI, including mechanical and drug therapies, are often accompanied by significant side effects. Therefore, it is necessary to discovery new strategies for treating CI/RI. Many studies confirm that Chinese herbal medicine (CHM) was used as a potential drug for treatment of CI/RI with the advantages of abundant resources, good efficacy, and few side effects. In this paper, we investigate the latest drug discoveries and advancements on CI/RI, make an overview of relevant CHM, and systematically summarize the pathophysiology of CI/RI. In addition, the protective effect and mechanism of related CHM, which includes extraction of single CHM and CHM formulation and preparation, are discussed. Moreover, an outline of the limitations of CHM and the challenges we faced are also presented. This review will be helpful for researchers further propelling the advancement of drugs and supplying more knowledge to support the application of previous discoveries in clinical drug applications against CI/RI.
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Affiliation(s)
- Ping Huang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Haitong Wan
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chongyu Shao
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chang Li
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ling Zhang
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yu He
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
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12
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DIKEN HO, DEMIRTAS B, KAYA HK. Effects of kefir on paraoxanase activity (PON1), total antioxidant status (TAS), total oxidant status (TOS), and serum lipid profiles in smokers and non-smokers. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.92721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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Chu A, Schlecker B, Kern M, Goodsell J, Angerhofer A, Lips K, Anders J. On the modeling of amplitude-sensitive electron spin resonance (ESR) detection using voltage-controlled oscillator (VCO)-based ESR-on-a-chip detectors. MAGNETIC RESONANCE (GOTTINGEN, GERMANY) 2021; 2:699-713. [PMID: 37905224 PMCID: PMC10539732 DOI: 10.5194/mr-2-699-2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 08/17/2021] [Indexed: 11/02/2023]
Abstract
In this paper, we present an in-depth analysis of a voltage-controlled oscillator (VCO)-based sensing method for electron spin resonance (ESR) spectroscopy, which greatly simplifies the experimental setup compared to conventional detection schemes. In contrast to our previous oscillator-based ESR detectors, where the ESR signal was encoded in the oscillation frequency, in the amplitude-sensitive method, the ESR signal is sensed as a change of the oscillation amplitude of the VCO. Therefore, using VCO architecture with a built-in amplitude demodulation scheme, the experimental setup reduces to a single permanent magnet in combination with a few inexpensive electronic components. We present a theoretical analysis of the achievable limit of detection, which uses perturbation-theory-based VCO modeling for the signal and applies a stochastic averaging approach to obtain a closed-form expression for the noise floor. Additionally, the paper also introduces a numerical model suitable for simulating oscillator-based ESR experiments in a conventional circuit simulator environment. This model can be used to optimize sensor performance early on in the design phase. Finally, all presented models are verified against measured results from a prototype VCO operating at 14 GHz inside a 0.5 T magnetic field.
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Affiliation(s)
- Anh Chu
- Institute of Smart Sensors, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany
| | - Benedikt Schlecker
- Institute of Smart Sensors, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany
| | - Michal Kern
- Institute of Smart Sensors, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany
| | - Justin L. Goodsell
- Department of Chemistry, University of Florida, Gainesville, FL32611-7200, USA
| | | | - Klaus Lips
- Department Spins in Energy Materials and Quantum Information Science (ASPIN), Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Jens Anders
- Institute of Smart Sensors and IQST (Center for Integrated Quantum Science and Technology), University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany
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Valenzuela-Gloria MS, Balagurusamy N, Chávez-González ML, Aguilar O, Hernández-Almanza A, Aguilar CN. Molecular Characterization of Fungal Pigments. J Fungi (Basel) 2021; 7:326. [PMID: 33922407 PMCID: PMC8146848 DOI: 10.3390/jof7050326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/17/2021] [Accepted: 04/18/2021] [Indexed: 11/17/2022] Open
Abstract
The industrial application of pigments of biological origin has been gaining strength over time, which is mainly explained by the increased interest of the consumer for products with few synthetic additives. So, the search for biomolecules from natural origin has challenged food scientists and technologists to identify, develop efficient and less consuming strategies for extraction and characterization of biopigments. In this task, elucidation of molecular structure has become a fundamental requirement, since it is necessary to comply with compound regulatory submissions of industrial sectors such as food, pharmaceutical agrichemicals, and other new chemical entity registrations. Molecular elucidation consists of establishing the chemical structure of a molecule, which allows us to understand the interaction between the natural additive (colorant, flavor, antioxidant, etc) and its use (interaction with the rest of the mixture of compounds). Elucidation of molecular characteristics can be achieved through several techniques, the most common being infrared spectroscopy (IR), spectroscopy or ultraviolet-visible spectrophotometry (UV-VIS), nuclear-resonance spectroscopy (MAGNETIC MRI), and mass spectrometry. This review provides the details that aid for the molecular elucidation of pigments of fungal origin, for a viable and innocuous application of these biopigments by various industries.
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Affiliation(s)
- Miriam S. Valenzuela-Gloria
- School of Biological Sciences, Universidad Autónoma de Coahuila, Torreón 27000, Coahuila, Mexico; (M.S.V.-G.); (N.B.)
| | - Nagamani Balagurusamy
- School of Biological Sciences, Universidad Autónoma de Coahuila, Torreón 27000, Coahuila, Mexico; (M.S.V.-G.); (N.B.)
| | - Mónica L. Chávez-González
- Bioprocesses and Bioproducts Research Group, BBG-DIA, Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Saltillo 25280, Coahuila, Mexico;
| | - Oscar Aguilar
- Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Nuevo León, Mexico;
| | - Ayerim Hernández-Almanza
- School of Biological Sciences, Universidad Autónoma de Coahuila, Torreón 27000, Coahuila, Mexico; (M.S.V.-G.); (N.B.)
| | - Cristóbal N. Aguilar
- Bioprocesses and Bioproducts Research Group, BBG-DIA, Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Saltillo 25280, Coahuila, Mexico;
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15
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Gumpp AM, Behnke A, Bach AM, Piller S, Boeck C, Rojas R, Kolassa IT. Mitochondrial bioenergetics in leukocytes and oxidative stress in blood serum of mild to moderately depressed women. Mitochondrion 2020; 58:14-23. [PMID: 33383159 DOI: 10.1016/j.mito.2020.12.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/22/2020] [Accepted: 12/21/2020] [Indexed: 01/02/2023]
Abstract
Major depressive disorder (MDD) has been associated with lower mitochondrial energy production and higher oxidative stress. We investigated whether these alterations manifest in patients with current mild to moderate MDD severity. We observed no differences in mitochondrial respiration and density (i.e., citrate-synthase activity) in peripheral blood mononuclear cells and oxidative stress markers (i.e., 8-hydroxy-2'-deoxyguanosine, 8-isoprostane) in blood serum of 20 female MDD patients compared to 24 non-depressed women. Alterations in mitochondrial energy production and oxidative stress did not linearly depend on the current severity of MDD. However, biological alterations might rather manifest with higher MDD severity/chronicity and at higher age.
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Affiliation(s)
- Anja M Gumpp
- Clinical & Biological Psychology, Institute of Psychology and Education, Ulm, University, Albert-Einstein-Allee 47, DE-89081 Ulm, Germany.
| | - Alexander Behnke
- Clinical & Biological Psychology, Institute of Psychology and Education, Ulm, University, Albert-Einstein-Allee 47, DE-89081 Ulm, Germany.
| | - Alexandra M Bach
- Clinical & Biological Psychology, Institute of Psychology and Education, Ulm, University, Albert-Einstein-Allee 47, DE-89081 Ulm, Germany.
| | - Sophia Piller
- Clinical & Biological Psychology, Institute of Psychology and Education, Ulm, University, Albert-Einstein-Allee 47, DE-89081 Ulm, Germany.
| | - Christina Boeck
- Clinical & Biological Psychology, Institute of Psychology and Education, Ulm, University, Albert-Einstein-Allee 47, DE-89081 Ulm, Germany.
| | - Roberto Rojas
- University Psychotherapeutic Outpatient Clinic, Institute of Psychology and Education, Ulm University, Schaffnerstr. 3, DE-89073 Ulm, Germany.
| | - Iris-Tatjana Kolassa
- Clinical & Biological Psychology, Institute of Psychology and Education, Ulm, University, Albert-Einstein-Allee 47, DE-89081 Ulm, Germany.
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16
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Relationship between Periodontitis and Glaucoma: A Cross-Sectional Study. J Ophthalmol 2020. [DOI: 10.1155/2020/5384602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The objective of this cross-sectional study was to evaluate the association between periodontitis and glaucoma. This prospective cohort study used epidemiological data from the Korean Genome and Epidemiology Study performed between 2004 and 2016. Among 173,209 participants, 9572 patients with periodontitis and 115,332 controls (nonperiodontitis) were selected. We analysed the history of glaucoma in periodontitis and control participants. The participants were interviewed regarding their history of hypertension, diabetes mellitus, hyperlipidaemia, periodontitis, glaucoma, smoking, and alcohol consumption by trained interviewers. A logistic regression model was created to analyse the odds ratio of having a history of glaucoma among patients with periodontitis. Two-tailed analyses using chi-square and independent t-tests were used for statistical analysis. The adjusted odds ratio of periodontitis as a risk factor for glaucoma was 3.44 (95% confidence interval = 2.99–3.97,
). This study demonstrated that glaucoma was associated with periodontitis.
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17
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Rojas D, Hernández-Rodríguez JF, Della Pelle F, Del Carlo M, Compagnone D, Escarpa A. Oxidative stress on-chip: Prussian blue-based electrode array for in situ detection of H2O2 from cell populations. Biosens Bioelectron 2020; 170:112669. [DOI: 10.1016/j.bios.2020.112669] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/15/2020] [Accepted: 09/29/2020] [Indexed: 12/15/2022]
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18
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Dördü TC, Hatipoğlu R, Topaktaş M, İstifli ES. In Vitro Genotoxicity and Molecular Docking Study of Ellagic Acid. ACTA ACUST UNITED AC 2020. [DOI: 10.2174/1573407215666191102130417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Ellagic Acid (EA) is a polyphenolic compound that is classified in the natural
antioxidants group. Polyphenolic compounds that exert antioxidant activity possess particular importance
for scientists, food producers and consumers due to their positive effects on human health. However,
despite considerable evidence that EA shows antigenotoxic activity by binding to DNA, there is no
systematic genotoxicity study of this substance, which can covalently bind to DNA. This study aims to
reveal the possible genotoxic activity of EA using widely accepted assays for the assessment of DNA
clastogenic activity: sister chromatid exchange, chromosome aberration, micronucleus and comet assays
as well as to predict the interactions among EA and DNA through molecular docking.
Methods:
Different assays were carried out to identify the clastogenic activity of EA on human lymphocyte
DNA using Sister Chromatid Exchange (SCE), Chromosome Aberration (CA), Micronucleus (MN)
and single-cell gel electrophoresis (SCGE/comet) assays. For this aim, human peripheral blood lymphocytes
were treated with EA (60, 80 and 100 μg/ml) for 24 and 48 hrs in the SCE, CA and MN assays
and for 1 hr in the comet assay. Furthermore, molecular docking experiments were also performed to
calculate the binding energy of EA on human B-DNA structure (B-DNA dodecamer) as well as to predict
noncovalent interactions among these macromolecules.
Results:
At the concentrations and treatment times (24- or 48-hr) tested, EA did not induce either SCE or
Chromosome Aberrations (CAs) as compared to the negative and solvent controls. Although EA slightly
increased the percentage of Micronucleated Binuclear (%MNBN) cells as well as the percentage of Micronucleus
(%MN) in 24 or 48-hr treatment periods at all concentrations, this increase was not statistically
significant as compared to both controls. The effect of EA on DNA replication (nuclear division) was determined
by the Proliferation Index (PI), the Nuclear Division Index (NDI) and the Mitotic Index (MI). No
statistically significant differences were observed in the PI or NDI in 24- or 48-hr treatment periods in
human lymphocyte cultures treated with EA at various concentrations. EA generally had no significant
effect on the MI, as observed with the PI and NDI.
Discussion:
Although the concentrations of 60 and 80 μg/mL at a 24-hr treatment period and the concentrations
of 60 μg/mL and 100 μg/mL at 48-hr treatment period generally decreased the MI, those decreases
were not statistically significant when compared to negative and solvent controls. Moreover, none of the
concentrations of EA tested in this study were able to increase DNA damage determined by the tail DNA
length, %DNA in tail and tail moment parameters in the comet assay. Although the amount of DNA damage
in the comet assay decreased with increasing concentrations of EA, this decrease was not statistically
significant as compared to both controls. However, molecular docking experiments interestingly showed
that the binding free energy of EA with B-DNA was -7.84 kcal/mol-1, indicating a strong interaction between
the two molecules.
Conclusion :
Although the findings of our study show that EA does not have genotoxic potential in human
chromosomes, molecular docking experiments revealed strong hydrogen bonding between EA and
B-DNA molecules. Therefore, it has been proposed that the prevailing information suggesting that the
molecules that bind to DNA cause genotoxic effects should be reconsidered from a wider perspective.
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Affiliation(s)
- Tuba C. Dördü
- Department of Biotechnology, Institute of Basic and Applied Sciences, Cukurova University, Adana, Turkey
| | - Rüştü Hatipoğlu
- Department of Field Crops, Faculty of Agriculture, Cukurova University, Adana, Turkey
| | - Mehmet Topaktaş
- Department of Biology, Faculty of Science and Letters, Cukurova University, Adana, Turkey
| | - Erman S. İstifli
- Department of Biology, Faculty of Science and Letters, Cukurova University, Adana, Turkey
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Peng WK, Chen L, Boehm BO, Han J, Loh TP. Molecular phenotyping of oxidative stress in diabetes mellitus with point-of-care NMR system. NPJ Aging Mech Dis 2020; 6:11. [PMID: 33083002 PMCID: PMC7536436 DOI: 10.1038/s41514-020-00049-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 09/09/2020] [Indexed: 12/18/2022] Open
Abstract
Diabetes mellitus is one of the fastest-growing health burdens globally. Oxidative stress, which has been implicated in the pathogenesis of diabetes complication (e.g., cardiovascular event), remains poorly understood. We report a new approach to rapidly manipulate and evaluate the redox states of blood using a point-of-care NMR system. Various redox states of the hemoglobin were mapped out using the newly proposed (pseudo) two-dimensional map known as T1-T2 magnetic state diagram. We exploit the fact that oxidative stress changes the subtle molecular motion of water proton in the blood, and thus inducing a measurable shift in magnetic resonance relaxation properties. We demonstrated the clinical utilities of this technique to rapidly stratify diabetes subjects based on their oxidative status in conjunction to the traditional glycemic level to improve the patient stratification and thus the overall outcome of clinical diabetes care and management.
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Affiliation(s)
- Weng Kung Peng
- Precision Medicine–Engineering Group, International Iberian Nanotechnology Laboratory, Braga, Portugal
- BioSystems & Micromechanics IRG (BioSyM), Singapore-MIT Alliance for Research and Technology (SMART) Centre, Singapore, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Lan Chen
- BioSystems & Micromechanics IRG (BioSyM), Singapore-MIT Alliance for Research and Technology (SMART) Centre, Singapore, Singapore
| | - Bernhard O. Boehm
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Ulm University Medical Centre, Department of Internal Medicine 1, Ulm University, Ulm, Germany
- Imperial College London, London, UK
| | - Jongyoon Han
- BioSystems & Micromechanics IRG (BioSyM), Singapore-MIT Alliance for Research and Technology (SMART) Centre, Singapore, Singapore
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, 36-841, 77 Massachusetts Avenue, Cambridge, MA 02139 USA
- Department of Biological Engineering, Massachusetts Institute of Technology, 36-841, 77 Massachusetts Avenue, Cambridge, MA 02139 USA
| | - Tze Ping Loh
- Department of Laboratory Medicine, National University Hospital, 5 Lower Kent Ridge Road, Singapore, 119074 Singapore
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20
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Robert KA, Sharma R, Henkel R, Agarwal A. An update on the techniques used to measure oxidative stress in seminal plasma. Andrologia 2020; 53:e13726. [PMID: 32814366 DOI: 10.1111/and.13726] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 05/12/2020] [Accepted: 05/22/2020] [Indexed: 12/15/2022] Open
Abstract
Reactive oxygen species (ROS) are produced in significant amounts by spermatozoa and leucocytes. They are necessary to carry out various physiological functions such as sperm capacitation, hyperactivation, acrosome reaction, sperm-zona binding and cellular signalling pathways. Oxidative stress (OS) results when the ROS levels overwhelm the available antioxidant reserve. A number of direct and indirect tests have been developed to assess oxidative stress. In this manuscript, we discuss these common direct and indirect tests as well as their advantages and disadvantages. Tests measuring sperm dysfunction secondary to oxidative stress such as lipid peroxidation, DNA fragmentation and protein alterations are also described.
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Affiliation(s)
- Kathy A Robert
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Rakesh Sharma
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Ralf Henkel
- Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
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21
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Jiang J, Zhao H, Xia D, Li X, Qu B. Formation of free radicals by direct photolysis of halogenated phenols (HPs) and effects of DOM: A case study on monobromophenols. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:122220. [PMID: 32050140 DOI: 10.1016/j.jhazmat.2020.122220] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 01/31/2020] [Accepted: 02/01/2020] [Indexed: 06/10/2023]
Abstract
The free radicals play an important role to understand direct/indirect transformation mechanisms of organic pollutants. However, very few efforts have been made to elucidate the radicals produced by direct photolysis. In this study, the short-lived radicals generated under simulated sunlight irradiation from representative halogenated phenols (HPs), monobromophenols, were investigated by electron paramagnetic resonance (EPR). The results showed that three radicals, carbon-centered radical (C), hydrogen radical (H) and hydroxyl radical (OH), were generated from the direct irradiation of HPs. Compared to other substitutions, halogenated atom at para-position led to the highest production of these radicals which is in accordance with the energies calculated by density functional theory. Based on the analyses of the reactive species and corresponding intermediate adducts, the possible reaction pathways for these radicals were tentatively proposed. Dissolved organic matters (DOM) could enhance the photodegradation of HPs by directly affecting the radicals' formation, mainly due to generation of excited triplet DOM (3DOM*). A positive correlation was found between the concentrations of hydrated electron and the steady state 3DOM* from different DOM. Our findings provided insights into environmental photochemical fate of HPs through their direct photolysis and will help more accurately understand their phototransformation mechanisms in the environment.
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Affiliation(s)
- Jingqiu Jiang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116023, China
| | - Hongxia Zhao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116023, China.
| | - Deming Xia
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116023, China
| | - Xintong Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116023, China
| | - Baocheng Qu
- College of Marine Technology and Environment, Dalian Ocean University, Dalian 116024, China.
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22
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Akar Z, Burnaz NA. A new colorimetric method for CUPRAC assay with using of TLC plate. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.05.110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Anders J, Lips K. MR to go. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2019; 306:118-123. [PMID: 31327536 DOI: 10.1016/j.jmr.2019.07.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 06/02/2019] [Accepted: 07/08/2019] [Indexed: 05/03/2023]
Abstract
In this paper, we provide a review of the recent advances in miniaturizing nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR) spectrometers for portable magnetic resonance (MR) applications. We focus the discussion on the application of integrated circuit technology for the miniaturization of the NMR and EPR spectrometer hardware and/or the detector and we will briefly touch on magnet technology. Finally, we will summarize current challenges of chip-integrated spectrometers and give an outlook on future applications of mobile MR spectrometers.
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Affiliation(s)
- J Anders
- University of Stuttgart, Institute of Smart Sensors and IQ(ST) (Center for Integrated Quantum Science and Technology), Stuttgart, Germany.
| | - K Lips
- Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin Joint EPR Lab, Institute Nanospectroscopy, Berlin, Germany.
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24
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Dynamic thiol/disulfide homeostasis and oxidant status in patients with hypoparathyroidism. J Med Biochem 2019; 39:231-239. [PMID: 33033457 DOI: 10.2478/jomb-2019-0036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 07/23/2019] [Indexed: 12/19/2022] Open
Abstract
Background In this study, we aimed at determining the dynamic thiol/disulfide homeostasis and oxidant balance, and investigating the relation of these parameters to the severity of the disease and the serum calcium levels. Methods 55 patients with iatrogenic hypoparathyroidism follow-ups and 40 healthy volunteers were included in the study. The blood dynamic thiol/sulfide balance, Total Antioxidant Status (TAS), Total Oxidant Status (TOS), Paraoxonase Enzyme Activity (PON) levels were measured in serum samples. Results In our study, it was found that the disulfide, disulfide/native thiol, disulfide/total thiol levels were higher in the hypoparathyroidism group. A negative correlation was found between 25-hydroxy vitamin D (25-OH vitamin D) and disulfide, disulfide/native thiol and disulfide/total thiol, and a positive correlation was found between native thiol and total thiol ratio; and the corrected calcium levels and PON levels were negatively correlated. Conclusions Consequently, a change in favour of disulfide was found in the dynamic thiol-disulfide homeostasis in the hypoparathyroidism group in our study.
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25
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Shahin WS, Engelhardt JF. Isolation of Redox-Active Endosomes (Redoxosomes) and Assessment of NOX Activity. Methods Mol Biol 2019; 1982:461-472. [PMID: 31172489 DOI: 10.1007/978-1-4939-9424-3_27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Reactive oxygen species (ROS) convey signals essential for proliferation, maintenance, and senescence of a growing list of cell types. Compartmentalization of these signals is integral to cell viability as well as the signaling pathways ROS direct. Redox-active endosomes (redoxosomes) are formed downstream of several ligand-activated receptors. NADPH oxidase (NOX) is a main component of redoxosomes, which recruits multiple proteins (Rac1, NOX2, p67phox, SOD1). Isolation of redoxosomes and evaluation of how superoxide (O2˙-) production directs receptor signaling at the level of the endosome have enabled a better understanding of biologic processes controlled by ROS. In this chapter, we will first review the major signaling pathways that utilize redoxosomes and components that control its redox-dependent functions. We will then outline biochemical and biophysical methods for the isolation and characterization of redoxosome properties.
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Affiliation(s)
- Weam S Shahin
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - John F Engelhardt
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, IA, USA.
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA.
- Center for Gene Therapy, Carver College of Medicine, University of Iowa, Iowa City, IA, USA.
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26
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Boeck C, Gumpp AM, Koenig AM, Radermacher P, Karabatsiakis A, Kolassa IT. The Association of Childhood Maltreatment With Lipid Peroxidation and DNA Damage in Postpartum Women. Front Psychiatry 2019; 10:23. [PMID: 30833908 PMCID: PMC6387959 DOI: 10.3389/fpsyt.2019.00023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 01/14/2019] [Indexed: 12/21/2022] Open
Abstract
Childhood maltreatment (CM) is associated with an increased risk for the development of psychiatric and somatic disorders in later life. A potential link could be oxidative stress, which is defined as the imbalance between the amount of reactive oxygen species (ROS) and the neutralizing capacity of anti-oxidative defense systems. However, the findings linking CM with oxidative stress have been inconsistent so far. In this study, we aimed to further explore this association by investigating biological markers of DNA and lipid damage due to oxidation in a comprehensive approach over two study cohorts of postpartum women (study cohort I and study cohort II). The severity of CM experiences (maltreatment load) was assessed in both studies using the Childhood Trauma Questionnaire. In study cohort I (N = 30), we investigated whether CM was associated with higher levels of structural DNA damage in peripheral blood mononuclear cells (PBMC) by two methods that are highly sensitive for detecting nuclear DNA strand breaks (comet assay and γH2AX staining). In study cohort II (N = 117), we then assessed in a larger cohort, that was specifically controlled for potential confounders for oxidative stress measurements, two established serum and plasma biomarkers of oxidative stress, one representing oxidative DNA and RNA damage (8-hydroxy-2'-deoxyguanosine and 8-hydroxyguanosine; 8-OH(d)G) and the other representing lipid peroxidation (8-isoprostane). In study cohort I, the analyses revealed no significant main effects of maltreatment load on cellular measures of nuclear DNA damage. The analyses of peripheral oxidative stress biomarkers in study cohort II revealed a significant main effect of maltreatment load on free 8-isoprostane plasma levels, but not on total 8-isprostane plasma levels and 8-OH(d)G serum levels. Taken together, by combining different methods and two study cohorts, we found no indications for higher oxidative DNA damages with higher maltreatment load in postpartum women. Further research is needed to investigate whether this increase in free 8-isoprostane is a marker for oxidative stress or whether it is instead functionally involved in ROS-related signaling pathways that potentially regulate inflammatory processes following a history of CM.
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Affiliation(s)
- Christina Boeck
- Clinical and Biological Psychology, Institute of Psychology and Education, Ulm University, Ulm, Germany
| | - Anja M Gumpp
- Clinical and Biological Psychology, Institute of Psychology and Education, Ulm University, Ulm, Germany
| | - Alexandra M Koenig
- Clinical and Biological Psychology, Institute of Psychology and Education, Ulm University, Ulm, Germany
| | - Peter Radermacher
- Institute of Anesthesiological Pathophysiology and Process Engineering, University Hospital Ulm, Ulm, Germany
| | - Alexander Karabatsiakis
- Clinical and Biological Psychology, Institute of Psychology and Education, Ulm University, Ulm, Germany
| | - Iris-Tatjana Kolassa
- Clinical and Biological Psychology, Institute of Psychology and Education, Ulm University, Ulm, Germany
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27
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Liu X, Jin X, Chen B, Liu X, Liang X, Fang X, Wu H, Fu X, Zheng H, Ding X, Duan N, Zhang Y. Effects of Kudiezi Injection on Serum Inflammatory Biomarkers in Patients with Acute Cerebral Infarction. DISEASE MARKERS 2018; 2018:7936736. [PMID: 30245755 PMCID: PMC6139219 DOI: 10.1155/2018/7936736] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/28/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND Kudiezi injection is a traditional Chinese medicine for acute cerebral infarction, but the exact mechanisms are poorly understood. OBJECTIVE To investigate the mechanisms of Kudiezi injection on the inflammatory response in the treatment of acute cerebral infarction. METHODS This was a prospective study of patients with acute cerebral infarction within 48 h of onset and treated between July 2012 and July 2016 at three hospitals in China. The patients were randomized to routine treatments (control group) versus routine treatments and Kudiezi injection (Kudiezi group). The National Institutes of Health Stroke Score was assessed on days 1, 3, 5, 7, and 14. The patients were tested for serum levels of pro- and anti-inflammatory cytokines (S100 calcium-binding protein B, neuron-specific enolase, interleukin-6, interleukin-10, interleukin-18, and matrix metaloproteinase-9; by enzyme-linked immunosorbent assay) immediately after admission and on days 3, 5, and 14. RESULTS Stroke scores were improved in both groups from days 1 to 14. On days 5 and 7, stroke scores in the Kudiezi group were lower than in the control group (P < 0.05). Compared with controls, the Kudiezi group had lower serum S100 calcium-binding protein B on day 14; higher interleukin-6 and interleukin-10 on day 3; lower interleukin-6 and interleukin-18 on day 5; and lower interleukin-18 and matrix metaloproteinase-9 on day 14. CONCLUSION Kudiezi injection could lead to early reduction of interleukin-6, interleukin-18, matrix metaloproteinase-9, neuron-specific enolase, and S100 calcium-binding protein B levels and increases of interleukin-10 levels in patients with acute ischemic stroke. This trial is registered with ClinicalTrials.gov NCT01636154.
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Affiliation(s)
- Xuemei Liu
- Central Laboratory, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Xianglan Jin
- Department of Neurology, Dong Fang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Baoxin Chen
- Department of Neurology, Dong Fang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Xiaohan Liu
- Beijing University of Chinese Medicine, Beijing, China
| | - Xiao Liang
- Beijing University of Chinese Medicine, Beijing, China
| | - Xiaolei Fang
- Department of Emergency, Dong Fang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Hongyun Wu
- Department of Neurology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xiaoyu Fu
- Department of Neurology, Beijing Huairou District Hospital of Chinese Medicine, Beijing, China
| | - Hong Zheng
- Central Laboratory, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Xiao Ding
- Department of Neurology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Na Duan
- Department of Neurology, Beijing Huairou District Hospital of Chinese Medicine, Beijing, China
| | - Yunling Zhang
- Central Laboratory, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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Tóthová L, Celec P. Oxidative Stress and Antioxidants in the Diagnosis and Therapy of Periodontitis. Front Physiol 2017; 8:1055. [PMID: 29311982 PMCID: PMC5735291 DOI: 10.3389/fphys.2017.01055] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 12/04/2017] [Indexed: 12/17/2022] Open
Abstract
Oxidative stress has been implicated in the pathogenesis of numerous diseases. However, large interventional studies with antioxidants failed to show benefits in the prevention or treatment of cardiovascular diseases, cancer, or diabetes mellitus. Numerous clinical studies have confirmed the association of oxidative stress markers and periodontitis. Technical and biological variability is high for most of the analyzed markers and none of them seems to be optimal for routine clinical use. In a research setting, analysis of a palette of oxidative stress markers is needed to cover lipid peroxidation, protein oxidation, and the antioxidant status. The source of reactive oxygen species and their role in the pathogenesis of periodontitis remains unclear. Interventional experiments indicate that oxidative stress might be more than just a simple consequence of the inflammation. Small studies have confirmed that some antioxidants could have therapeutic value at least as an addition to the standard non-surgical treatment of periodontitis. A clear evidence for the efficiency of antioxidant treatment in large patient cohorts is lacking. Potentially, because lowering of oxidative stress markers might be a secondary effect of anti-inflammatory or antibacterial agents. As the field of research of oxidative stress in periodontitis gains attraction and the number of relevant published papers is increasing a systematic overview of the conducted observational and interventional studies is needed. This review summarizes the currently available literature linking oxidative stress and periodontitis and points toward the potential of adjuvant antioxidant treatment, especially in cases where standard treatment fails to improve the periodontal status.
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Affiliation(s)
- L'ubomíra Tóthová
- Faculty of Medicine, Institute of Molecular Biomedicine, Comenius University, Bratislava, Slovakia.,Faculty of Medicine, Institute of Physiology, Comenius University, Bratislava, Slovakia
| | - Peter Celec
- Faculty of Medicine, Institute of Molecular Biomedicine, Comenius University, Bratislava, Slovakia.,Faculty of Medicine, Institute of Pathophysiology, Comenius University, Bratislava, Slovakia.,Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
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Salmas RE, Gulhan MF, Durdagi S, Sahna E, Abdullah HI, Selamoglu Z. Effects of propolis, caffeic acid phenethyl ester, and pollen on renal injury in hypertensive rat: An experimental and theoretical approach. Cell Biochem Funct 2017; 35:304-314. [PMID: 28833317 DOI: 10.1002/cbf.3277] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/23/2017] [Accepted: 07/03/2017] [Indexed: 12/20/2022]
Abstract
The objective of this study was to evaluate the antioxidant effects of propolis, caffeic acid phenethyl ester (CAPE; active compound in propolis), and pollen on biochemical oxidative stress biomarkers in rat kidney tissue inhibited by Nω -nitro-L-arginine methyl ester (L-NAME). The biomarkers evaluated were paraoxonase (PON1), oxidative stress index (OSI), total antioxidant status (TAS), total oxidant status (TOS), asymmetric dimethylarginine (ADMA), and nuclear factor kappa B (NF-κB). TAS levels and PON1 activity were significantly decreased in kidney tissue samples in the L-NAME-treated group (P < 0.05). The levels of TAS and PONI were higher in the L-NAME plus propolis, CAPE, and pollen groups compared with the L-NAME-treated group. TOS, ADMA, and NF-κB levels were significantly increased in the kidney tissue samples of the L-NAME-treated group (P < 0.05). However, these parameters were significantly lower in the L-NAME plus propolis, CAPE, and pollen groups (P < 0.05) compared with rats administered L-NAME alone (P < 0.05). Furthermore, the binding energy of CAPE within catalytic domain of glutathione reductase (GR) enzyme as well as its inhibitory mechanism was determined using molecular modeling approaches. In conclusion, experimental and theoretical data suggested that oxidative alterations occurring in the kidney tissue of chronic hypertensive rats may be prevented via active compound of propolis, CAPE administration.
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Affiliation(s)
- Ramin Ekhteiari Salmas
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul, Turkey
| | - Mehmet Fuat Gulhan
- Department of Medicinal and Aromatic Plants, Vocational School of Technical Sciences, Aksaray, Turkey
| | - Serdar Durdagi
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul, Turkey
| | - Engin Sahna
- Department of Pharmacology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Huda I Abdullah
- Department of Medical Biology, Faculty of Medicine, Omer Halisdemir University, Nigde, Turkey
| | - Zeliha Selamoglu
- Department of Medical Biology, Faculty of Medicine, Omer Halisdemir University, Nigde, Turkey
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Coskun ZM, Koyuturk M, Karabulut S, Bolkent S. CB-1R and GLP-1R gene expressions and oxidative stress in the liver of diabetic rats treated with sitagliptin. Pharmacol Rep 2017; 69:822-829. [PMID: 28599244 DOI: 10.1016/j.pharep.2017.03.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 03/09/2017] [Accepted: 03/16/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND Type 2 diabetes is a major health problem affecting millions of people. Controlled eating and regular physical activity are important for the management of type 2 diabetes. Dipeptidyl peptidase-4 enzyme (DPP-4) inhibitor sitagliptin is a potent agent for the treatment of type-2 diabetes. The aim of this study was to examine the effects of sitagliptin on the liver of rats with streptozotocin (STZ)-induced diabetes, in terms of (i) the expression levels of the cannabinoid 1 receptor (CB-1R) and glucagon-like peptide 1 receptor (GLP-1R), (ii) alterations in the number and localization of these peptides, and (iii) changes in histological and oxidative damage. METHODS Thirty-two neonatal (two-day-old) rats, which were divided into four groups, were treated with saline (control), sitagliptin (control; 1.5mg/kg/day for 15 days starting from day 5 of the experimental period), STZ (diabetes; 100mg/kg single dose), STZ+sitagliptin (diabetes+sitagliptin). After 20 days, hepatic tissues were obtained from rats. RESULTS The expressions of GLP-1R and CB-1R mRNA increased approximately 1.89- and 2.94-fold, respectively, in the diabetes+sitagliptin group as compared to the diabetic group. Additionally the number of GLP-1R immunopositive cells decreased and CB-1R immunopositive cells increased in comparison to the diabetic group; however, this was not statistically significant. Glutathione levels increased, but malondialdehyde and protein carbonyl levels decreased in the diabetes+sitagliptin group more than the diabetic group. CONCLUSION Our findings indicate that sitagliptin treatment regulates GLP-1R and CB-1R gene expressions, which are associated with appetite regulation in diabetic rat, and may decrease oxidative stress and liver tissue damage.
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Affiliation(s)
- Zeynep Mine Coskun
- Department of Molecular Biology and Genetics, Faculty of Arts and Sciences, Istanbul Bilim University, Istanbul, Turkey
| | - Meral Koyuturk
- Department of Histology and Embryology, Faculty of Cerrahpasa Medicine, Istanbul University, Istanbul, Turkey
| | - Sezin Karabulut
- Department of Medical Biology, Faculty of Cerrahpasa Medicine, Istanbul University, Istanbul, Turkey
| | - Sema Bolkent
- Department of Medical Biology, Faculty of Cerrahpasa Medicine, Istanbul University, Istanbul, Turkey.
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Fang Q, Guo S, Zhou H, Han R, Wu P, Han C. Astaxanthin protects against early burn-wound progression in rats by attenuating oxidative stress-induced inflammation and mitochondria-related apoptosis. Sci Rep 2017; 7:41440. [PMID: 28128352 PMCID: PMC5269753 DOI: 10.1038/srep41440] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 12/19/2016] [Indexed: 01/09/2023] Open
Abstract
Burn-wound progression can occur in the initial or peri-burn area after a deep burn injury. The stasis zone has a higher risk of deterioration mediated by multiple factors but is also considered salvageable. Astaxanthin (ATX), which is extracted from some marine organisms, is a natural compound with a strong antioxidant effect that has been reported to attenuate organ injuries caused by traumatic injuries. Hence, we investigated the potential effects of ATX on preventing early burn-wound progression. A classic "comb" burn rat model was established in this study for histological and biological assessments, which revealed that ATX, particularly higher doses, alleviated histological deterioration in the stasis zone. Additionally, we observed dose-dependent improvements in oxidative stress and the release of inflammatory mediators after ATX treatment. Furthermore, ATX dose-dependently attenuated burn-induced apoptosis in the wound areas, and this effect was accompanied by increases in Akt and Bad phosphorylation and a downregulation of cytochrome C and caspase expression. In addition, the administration of Ly 294002 further verified the effect of ATX. In summary, we demonstrated that ATX protected against early burn-wound progression in a rat deep-burn model. This protection might be mediated by the attenuation of oxidative stress-induced inflammation and mitochondria-related apoptosis.
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Affiliation(s)
- Quan Fang
- Department of Burns, Second Affiliated Hospital, Zhejiang University, College of Medicine, 88 Jiefang Road, Hangzhou 310009, Zhejiang, China
- Department of Plastic Surgery, Binjiang Branch, Second Affiliated Hospital, Zhejiang University, College of Medicine, 1511 Jianghong Road, Hangzhou 310000, Zhejiang, China
| | - Songxue Guo
- Department of Burns, Second Affiliated Hospital, Zhejiang University, College of Medicine, 88 Jiefang Road, Hangzhou 310009, Zhejiang, China
| | - Hanlei Zhou
- Department of Burns, Second Affiliated Hospital, Zhejiang University, College of Medicine, 88 Jiefang Road, Hangzhou 310009, Zhejiang, China
| | - Rui Han
- Department of Dermatology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, 3 East Qingchun Road, Hangzhou 310020, Zhejiang, China
| | - Pan Wu
- Department of Burns, Second Affiliated Hospital, Zhejiang University, College of Medicine, 88 Jiefang Road, Hangzhou 310009, Zhejiang, China
| | - Chunmao Han
- Department of Burns, Second Affiliated Hospital, Zhejiang University, College of Medicine, 88 Jiefang Road, Hangzhou 310009, Zhejiang, China
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Liu X, Tao Y, Wang F, Yao T, Fu C, Zheng H, Yan Y, Liang X, Jiang X, Zhang Y. Kudiezi injection mitigates myocardial injury induced by acute cerebral ischemia in rats. Altern Ther Health Med 2017; 17:8. [PMID: 28056927 PMCID: PMC5217384 DOI: 10.1186/s12906-016-1514-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 12/12/2016] [Indexed: 11/10/2022]
Abstract
Background Kudiezi (KDZ) injection is commonly used in traditional Chinese medicine as treatment for cerebral infarction and angina pectoris. The present study investigated the therapeutic effects of KDZ injection on myocardial injury induced by acute cerebral ischemia and the possibly protective mechanisms. Methods Rats were divided into three groups: sham, 6h-ischemia, and KDZ treatment (KDZ). The neurological deficits were determined by the Garcia score. The cerebral infarct volume was measured by 2,3,5-triphenyltetrazolium chloride (TTC) staining, and brain water content was also evaluated. Serum creatinine kinase (CK), lactate dehydrogenase (LDH), and creatine kinase-myocardial band (CK-MB) activity, myocardial tissue malondialdehyde (MDA) levels, L-Glutathione (GSH) levels, and superoxide dismutase (SOD) activity as well as mitochondrial cytochrome c oxidase (COX) activity were determined. Mitochondrial COX I and COX III mRNA expressions of myocardial tissues were measured by RT-PCR. Results Impaired neurological function and brain edema were observed in the 6h-ischemia group. TTC staining showed that the 6h-ischemia group had larger infarct zones than the sham group. Myocardial ischemic changes (widened myocardial cell gap, cracks, and obvious edema) were detected in the 6h-ischemia group compared with the sham group, with elevated serum CK-MB activity and CK and LDH levels. Electrocardiography showed lower medium frequency (MF) and high frequency (HF) in the 6h-ischemia group compared with the sham group. In myocardial tissue, COX activity was elevated in the 6h-ischemia compared with the sham group, while SOD, GSH, and MDA levels, and COX I and COX III mRNA expressions remained unchanged. KDZ injection decreased neurological impairment, brain edema, gaps between cells, and infarct size. Compared with the 6h-ischemia group, it reduced serum CK-MB activity and CK and LDH levels, and MDA levels in myocardial tissue. KDZ significantly increased GSH levels, SOD activity, and mitochondria COX activity and the expression of COX I and COX III mRNA in myocardial tissue compared with the sham group. Conclusion KDZ injection had a protective effect against cerebral ischemia in rats. KDZ injection could also alleviate myocardial injury after acute cerebral ischemia in rats. The possible mechanisms involve the regulation of the oxidative stress/antioxidant capacity after cerebral ischemia.
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Zhou L, Zhao H, Pan T, Trinchi A, Lan M, Wei G. Evaluation of Methanol Induced Free Radicals in Mice Liver. Aust J Chem 2017. [DOI: 10.1071/ch16492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Methanol induced oxidative stress (OS) models in mice were successfully established and evaluated by the electron paramagnetic resonance (EPR) spin trapping technique. The capacity for removal of reactive oxygen species (ROS) free radicals by rhubarb and vitamin C (Vc) as candidate materials was also investigated. EPR was employed to determine the free radicals generated from a spin trapping agent, α-phenyl-N-tert-butylnitrone (PBN), that reacted with the ROS. The activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX), and the level of malondialdehyde (MDA) were also evaluated by enzyme assays. The results indicated that methanol clearly promoted the generation of ROS free radicals in the liver of mice. The activity of SOD and GSH-PX was reduced significantly, although the level of MDA was increased as a result of the harmful effect of methanol. In addition, rhubarb and Vc exhibited a protective effect on the mice liver under acute OS.
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Antioxidant Composition of a Selection of Italian Red Wines and Their Corresponding Free-Radical Scavenging Ability. J CHEM-NY 2016. [DOI: 10.1155/2016/4565391] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
This study correlates the antioxidant composition profiles and the overall antioxidant capacities of 36 Italian red wine samples. The samples were fully characterized by chromatographic and spectrophotometric techniques. The overall antioxidant capacity was determined by titrating a solution of the semistable free radical DPPH (1,1-diphenyl-2-picrylhydrazyl) with each wine sample followed by Electron Paramagnetic Resonance (EPR) spectroscopy and then measuring the resulting decrease in DPPH-signal. The antioxidant activities of the samples were expressed as (+)-catechin equivalents and related to their antioxidant composition profiles. Samples with a high polyphenol content showed a high DPPH scavenging ability as well. Seven well-defined groups, mainly constituted by wines coming from the same cultivar, were evidenced by PCA analysis. Alcohol content and pH did not influence the wine DPPH scavenging ability. The most important variables contributing to the wines’ antioxidant power are total flavonoid, total phenol, and proanthocyanidin indices together with fertaric acid,trans-caftaric acid,trans-coutaric acid, and both quercetin glucoside and quercetin glucuronide. EPR is demonstrated to be faster than the other analytical methods (spectrophotometric and chromatographic analyses) to determine the wine overall antioxidant activity.
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Karabulut S, Coskun ZM, Bolkent S. Immunohistochemical, apoptotic and biochemical changes by dipeptidyl peptidase-4 inhibitor-sitagliptin in type-2 diabetic rats. Pharmacol Rep 2015; 67:846-53. [PMID: 26398375 DOI: 10.1016/j.pharep.2015.01.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 11/26/2014] [Accepted: 01/19/2015] [Indexed: 12/19/2022]
Abstract
BACKGROUND Diabetes is a major public health problem that is rapidly increasing in prevalence. In this study, the effects of sitagliptin, a dipeptidyl peptidase-4 inhibitor, were examined on newborn diabetic rat model. METHODS Wistar albino newborn rats were divided into control (Ctrl), sitagliptin (Sit), diabetic and diabetic+Sit groups. On the second day after the birth, 100mg/kg streptozotocin (STZ) was administered intraperitoneally in a single dose to induce type-2 diabetes in rats. The Sit and diabetic+Sit groups were administered sitagliptin (1.5mg/kg subcutaneous) as of the day 5 for 15 days. The pancreas sections were stained with insulin (INS), glucagon (GLU), somatostatin (SS), glucagon-like peptide-1 (GLP-1) and glucagon-like peptide-1 receptor (GLP-1R) antibodies by the streptavidin-biotin peroxidase technique. The TUNEL method for apoptosis and biochemical analysis were performed in the pancreas and serum, respectively. RESULTS Body weight and blood glucose levels showed significant differences among all groups on days 11 and 20. In diabetic rats following treatment with sitagliptin, the area percentage of INS immunopositive cells increased while the area percentage of SS immunopositive cells decreased, insignificantly. A significant increase was observed on the area percentage of GLU, GLP-1 and GLP-1R immunopositive cells in the diabetic+Sit group when compared to the diabetic group. The area percentage of apoptotic cells was the same among all groups. While serum glutathione and malondialdehyde levels demonstrated insignificant alterations, the catalase and superoxide dismutase activity significantly changed among four groups. CONCLUSION According to our findings, sitagliptin may be a useful therapeutic agent to a certain extent of type-2 diabetic condition.
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Affiliation(s)
- Sezin Karabulut
- Department of Medical Biology, Faculty of Cerrahpasa Medicine, Istanbul University, Istanbul, Turkey
| | - Zeynep Mine Coskun
- Department of Molecular Biology and Genetics, Faculty of Arts and Sciences, Istanbul Bilim University, Istanbul, Turkey
| | - Sema Bolkent
- Department of Medical Biology, Faculty of Cerrahpasa Medicine, Istanbul University, Istanbul, Turkey.
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Braga PC, Dal Sasso M, Lattuada N, Greco V, Sibilia V, Zucca E, Stucchi L, Ferro E, Ferrucci F. Antioxidant activity of hyaluronic acid investigated by means of chemiluminescence of equine neutrophil bursts and electron paramagnetic resonance spectroscopy. J Vet Pharmacol Ther 2014; 38:48-54. [DOI: 10.1111/jvp.12141] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 05/14/2014] [Indexed: 01/18/2023]
Affiliation(s)
- P. C. Braga
- Centre of Respiratory Pharmacology; School of Medicine; Università degli Studi di Milano; Milano Italy
- Department of Medical Biotechnology and Translational Medicine; School of Medicine; Università degli Studi di Milano; Milano Italy
| | - M. Dal Sasso
- Department of Medical Biotechnology and Translational Medicine; School of Medicine; Università degli Studi di Milano; Milano Italy
| | - N. Lattuada
- Department of Medical Biotechnology and Translational Medicine; School of Medicine; Università degli Studi di Milano; Milano Italy
| | - V. Greco
- Department of Medical Biotechnology and Translational Medicine; School of Medicine; Università degli Studi di Milano; Milano Italy
| | - V. Sibilia
- Department of Medical Biotechnology and Translational Medicine; School of Medicine; Università degli Studi di Milano; Milano Italy
| | - E. Zucca
- Department of Health, Animal Science and Food Safety; School of Veterinary Medicine; Università degli Studi di Milano; Milano Italy
| | - L. Stucchi
- Department of Health, Animal Science and Food Safety; School of Veterinary Medicine; Università degli Studi di Milano; Milano Italy
| | - E. Ferro
- Department of Health, Animal Science and Food Safety; School of Veterinary Medicine; Università degli Studi di Milano; Milano Italy
| | - F. Ferrucci
- Department of Health, Animal Science and Food Safety; School of Veterinary Medicine; Università degli Studi di Milano; Milano Italy
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The correlation of the total antioxidant status (TAS), total oxidant status (TOS) and paraoxonase activity (PON1) with smoking. Clin Biochem 2014; 47:393-7. [DOI: 10.1016/j.clinbiochem.2013.10.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 03/30/2013] [Accepted: 10/01/2013] [Indexed: 11/20/2022]
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Akan Z, Garip AI. Antioxidants May Protect Cancer Cells from Apoptosis Signals and Enhance Cell Viability. Asian Pac J Cancer Prev 2013; 14:4611-4. [DOI: 10.7314/apjcp.2013.14.8.4611] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Takemori K, Murakami T, Kometani T, Ito H. Possible involvement of oxidative stress as a causative factor in blood-brain barrier dysfunction in stroke-prone spontaneously hypertensive rats. Microvasc Res 2013; 90:169-72. [PMID: 23978333 DOI: 10.1016/j.mvr.2013.08.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 06/13/2013] [Accepted: 08/14/2013] [Indexed: 01/19/2023]
Abstract
To elucidate the pathogenic roles of oxidative stress on blood-brain-barrier (BBB) dysfunction, we compared the chronological changes of oxidative stress in blood and cerebral tissue between stroke-prone spontaneously hypertensive rats (SHRSP) and normotensive Wistar-Kyoto rats (WKY). Plasma and tissue oxidative stress was assayed by the diacron-reactive oxygen metabolite (d-ROM) test using 8-hydroxy-2'-deoxyguanosine (8-OHdG) as a reference oxidative stress marker. The plasma and cerebral cortex d-ROM levels increased in SHRSP after 16weeks of age, but not in WKY. There were no significant differences in 8-OHdG or lipid peroxidation markers between SHRSP and WKY. Antioxidant capacity, as estimated by the biological antioxidant potential test, was similar between SHRSP and WKY at all ages examined. The changes in plasma and tissue d-ROM levels coincided with changes in glucose transporter-1 and aquaporin-4 expression, as functional constituents of the BBB. These results indicate that plasma oxidative stress increases before the onset of tissue damage, and plays an important role in BBB dysfunction rather than decreases in antioxidant capacity. The plasma d-ROM test appears to be useful for predicting vasogenic cerebral edema in severe hypertension.
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Affiliation(s)
- Kumiko Takemori
- Department of Food Science and Nutrition, Faculty of Agriculture, Kinki University, Nara, Japan.
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40
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Braga PC, Dal Sasso M, Culici M, Falchi M, Spallino A, Nappi G. Free radical-scavenging activity of sulfurous water investigated by electron paramagnetic resonance (EPR) spectroscopy. Exp Lung Res 2011; 38:67-74. [PMID: 22185392 DOI: 10.3109/01902148.2011.641668] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The aim of the study was to explore the antiradical activity of sulfurous water, used for inhalatory therapy (characterized by the presence of sulfhydryl [HS]) by means of electron paramagnetic resonance (EPR) spectroscopy. The effects of sulfurous water corresponding to the concentrations from 16 down to 0.25 μg/mL of HS were tested by means of Fenton reaction (HO•), KO2-crown ether system (O2-•), and EPR of Tempol and of Fremy's salt radical. All of these assays were made using natural sulfurous water or degassed sulfurous water (no detectable HS) or reconstituted sulfurous water (degassed plus NaHS). The free radicals were significantly inhibited by natural water with HS concentrations ranging from 16 to 1 μg/mL for HO•, Tempol, and Fremy's salt, and O2-• was significantly inhibited from 16 and 2 μg/mL. The tests of degassed water did not reveal any significant differences from baseline values. The tests of reconstituted water led to significant results overlapping those obtained using natural water, thus confirming the importance of the presence of HS group (reductive activity). The positive effects of the activity of sulfurous thermal water is partially based on the patients' subjective sense of well-being and partially on symptomatic (or general) clinical improvements that are sometimes difficult to quantify. These findings indicate that, in addition to their known mucolytic activity and trophic effects on respiratory mucosa, the HS groups in sulfurous water also have antioxidant activity that contributes to the water's therapeutic effects on upper and lower airway inflammatory diseases.
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Affiliation(s)
- Pier Carlo Braga
- Center of Respiratory Pharmacology, Department of Pharmacology, School of Medicine, University of Milan, Milan, Italy.
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Freinbichler W, Colivicchi MA, Stefanini C, Bianchi L, Ballini C, Misini B, Weinberger P, Linert W, Varešlija D, Tipton KF, Della Corte L. Highly reactive oxygen species: detection, formation, and possible functions. Cell Mol Life Sci 2011; 68:2067-79. [PMID: 21533983 PMCID: PMC11114910 DOI: 10.1007/s00018-011-0682-x] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Revised: 02/27/2011] [Accepted: 03/29/2011] [Indexed: 12/16/2022]
Abstract
The so-called reactive oxygen species (ROS) are defined as oxygen-containing species that are more reactive than O(2) itself, which include hydrogen peroxide and superoxide. Although these are quite stable, they may be converted in the presence of transition metal ions, such as Fe(II), to the highly reactive oxygen species (hROS). hROS may exist as free hydroxyl radicals (HO·), as bound ("crypto") radicals or as Fe(IV)-oxo (ferryl) species and the somewhat less reactive, non-radical species, singlet oxygen. This review outlines the processes by which hROS may be formed, their damaging potential, and the evidence that they might have signaling functions. Since our understanding of the formation and actions of hROS depends on reliable procedures for their detection, particular attention is given to procedures for hROS detection and quantitation and their applicability to in vivo studies.
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Affiliation(s)
- Wolfhardt Freinbichler
- Institute for Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163-AC, 1060 Vienna, Austria
| | - Maria A. Colivicchi
- Dipartimento di Farmacologia Preclinica e Clinica M. Aiazzi Mancini, Università degli Studi di Firenze, Viale G. Pieraccini 6, 50139 Florence, Italy
| | - Chiara Stefanini
- Dipartimento di Farmacologia Preclinica e Clinica M. Aiazzi Mancini, Università degli Studi di Firenze, Viale G. Pieraccini 6, 50139 Florence, Italy
| | - Loria Bianchi
- Dipartimento di Farmacologia Preclinica e Clinica M. Aiazzi Mancini, Università degli Studi di Firenze, Viale G. Pieraccini 6, 50139 Florence, Italy
- Present Address: Azienda USL 3 di Pistoia, 51100 Pistoia, Italy
| | - Chiara Ballini
- Dipartimento di Farmacologia Preclinica e Clinica M. Aiazzi Mancini, Università degli Studi di Firenze, Viale G. Pieraccini 6, 50139 Florence, Italy
| | - Bashkim Misini
- Institute for Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163-AC, 1060 Vienna, Austria
| | - Peter Weinberger
- Institute for Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163-AC, 1060 Vienna, Austria
| | - Wolfgang Linert
- Institute for Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163-AC, 1060 Vienna, Austria
| | - Damir Varešlija
- Department of Biochemistry, Trinity College, Dublin 2, Ireland
| | - Keith F. Tipton
- Department of Biochemistry, Trinity College, Dublin 2, Ireland
| | - Laura Della Corte
- Dipartimento di Farmacologia Preclinica e Clinica M. Aiazzi Mancini, Università degli Studi di Firenze, Viale G. Pieraccini 6, 50139 Florence, Italy
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McEwen ML, Sullivan PG, Rabchevsky AG, Springer JE. Targeting mitochondrial function for the treatment of acute spinal cord injury. Neurotherapeutics 2011; 8:168-79. [PMID: 21360236 PMCID: PMC3101832 DOI: 10.1007/s13311-011-0031-7] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Traumatic injury to the mammalian spinal cord is a highly dynamic process characterized by a complex pattern of pervasive and destructive biochemical and pathophysiological events that limit the potential for functional recovery. Currently, there are no effective therapies for the treatment of spinal cord injury (SCI) and this is due, in part, to the widespread impact of the secondary injury cascades, including edema, ischemia, excitotoxicity, inflammation, oxidative damage, and activation of necrotic and apoptotic cell death signaling events. In addition, many of the signaling pathways associated with these cascades intersect and initiate other secondary injury events. Therefore, it can be argued that therapeutic strategies targeting a specific biochemical cascade may not provide the best approach for promoting functional recovery. A "systems approach" at the subcellular level may provide a better strategy for promoting cell survival and function and, as a consequence, improve functional outcomes following SCI. One such approach is to study the impact of SCI on the biology and function of mitochondria, which serve a major role in cellular bioenergetics, function, and survival. In this review, we will briefly describe the importance and unique properties of mitochondria in the spinal cord, and what is known about the response of mitochondria to SCI. We will also discuss a number of strategies with the potential to promote mitochondrial function following SCI.
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Affiliation(s)
- Melanie L. McEwen
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY 40536–0509 USA
- Department of Physical Medicine and Rehabilitation, University of Kentucky, Lexington, Kentucky 40536–0509 USA
- Department of Anatomy and Neurobiology, University of Kentucky, Lexington, Kentucky 40536–0509 USA
| | - Patrick G. Sullivan
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY 40536–0509 USA
- Department of Anatomy and Neurobiology, University of Kentucky, Lexington, Kentucky 40536–0509 USA
| | - Alexander G. Rabchevsky
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY 40536–0509 USA
- Department of Physiology, University of Kentucky, Lexington, Kentucky 40536–0509 USA
| | - Joe E. Springer
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY 40536–0509 USA
- Department of Physical Medicine and Rehabilitation, University of Kentucky, Lexington, Kentucky 40536–0509 USA
- Department of Anatomy and Neurobiology, University of Kentucky, Lexington, Kentucky 40536–0509 USA
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43
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Van Wijk EP, Van Wijk R, Bosman S. Using ultra-weak photon emission to determine the effect of oligomeric proanthocyanidins on oxidative stress of human skin. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2010; 98:199-206. [DOI: 10.1016/j.jphotobiol.2010.01.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Revised: 12/21/2009] [Accepted: 01/06/2010] [Indexed: 12/19/2022]
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44
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Buico A, Cassino C, Ravera M, Betta PG, Osella D. Oxidative stress and total antioxidant capacity in human plasma. Redox Rep 2009; 14:125-31. [PMID: 19490754 DOI: 10.1179/135100009x392557] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
While several tools are already available for the separate measurement of the oxidant and antioxidant pools, a single, quick and easy method for determining total oxidative stress would be advantageous. In the present study, we compare the plasma of untreated patients with leukemia/solid gynecological tumors (n = 50) and current regular smokers (n = 50) with a smoking history of >or=10 cigarettes per day to the plasma of healthy blood donors. Standard tools were used to measure total oxidant status, ceruloplasmin activity, total antioxidant capacity, uric acid content and oxidative stress index. Oxidative stress was also evaluated using the controversial d-ROMs test, a commercial method of reactive oxygen species detection. Statistically significant differences between the smokers and the control group were detected for all of the biochemical parameters. Conversely, the differences in the cancer patients were not statistically significant for oxidative stress.
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Affiliation(s)
- Alessandra Buico
- Dipartimento di Scienze dell'Ambiente e della Vita, Università del Piemonte Orientale A. Avogadro, Alessandria, Italy
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45
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Oakley FD, Abbott D, Li Q, Engelhardt JF. Signaling components of redox active endosomes: the redoxosomes. Antioxid Redox Signal 2009; 11:1313-33. [PMID: 19072143 PMCID: PMC2842130 DOI: 10.1089/ars.2008.2363] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Subcellular compartmentalization of reactive oxygen species (ROS) plays a critical role in transmitting cell signals in response to environmental stimuli. In this regard, signals at the plasma membrane have been shown to trigger NADPH oxidase-dependent ROS production within the endosomal compartment and this step can be required for redox-dependent signal transduction. Unique features of redox-active signaling endosomes can include NADPH oxidase complex components (Nox1, Noxo1, Noxa1, Nox2, p47phox, p67phox, and/or Rac1), ROS processing enzymes (SOD1 and/or peroxiredoxins), chloride channels capable of mediating superoxide transport and/or membrane gradients required for Nox activity, and novel redox-dependent sensors that control Nox activity. This review will discuss the cytokine and growth factor receptors that likely mediate signaling through redox-active endosomes, and the common mechanisms whereby they act. Additionally, the review will cover ligand-independent environmental injuries, such as hypoxia/reoxygenation injury, that also appear to facilitate cell signaling through NADPH oxidase at the level of the endosome. We suggest that redox-active endosomes encompass a subset of signaling endosomes that we have termed redoxosomes. Redoxosomes are uniquely equipped with redox-processing proteins capable of transmitting ROS signals from the endosome interior to redox-sensitive effectors on the endosomal surface. In this manner, redoxosomes can control redox-dependent effector functions through the spatial and temporal regulation of ROS as second messengers.
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Affiliation(s)
- Fredrick D Oakley
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242, USA
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Chang TKH, Abbott FS. Oxidative Stress as a Mechanism of Valproic Acid-Associated Hepatotoxicity. Drug Metab Rev 2008; 38:627-39. [PMID: 17145692 DOI: 10.1080/03602530600959433] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Valproic acid (2-n-propylpentanoic acid; VPA) has several therapeutic indications, but it is used primarily as an anticonvulsant. VPA is a relatively safe drug, but its use is associated with idiosyncratic hepatotoxicity, which in some cases may lead to fatality. The underlying mechanism responsible for the hepatotoxicity is still not well understood, but various hypotheses have been proposed, including oxidative stress. This article discusses the experimental evidence on the effect of VPA on the various indices of oxidative stress and on the potential role of oxidative stress in VPA-associated hepatotoxicity.
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Affiliation(s)
- Thomas K H Chang
- Faculty of Pharmaceutical Sciences, The University of British Columbia, Vancouver, British Columbia, Canada.
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Buico A, Cassino C, Dondero F, Vergani L, Osella D. Radical scavenging abilities of fish MT-A and mussel MT-10 metallothionein isoforms: An ESR study. J Inorg Biochem 2008; 102:921-7. [DOI: 10.1016/j.jinorgbio.2007.12.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2007] [Revised: 10/02/2007] [Accepted: 12/16/2007] [Indexed: 01/08/2023]
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48
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Yu LL, Cheng Z. Application of electron spin resonance (ESR) spectrometry in nutraceutical and food research. Mol Nutr Food Res 2007; 52:62-78. [DOI: 10.1002/mnfr.200700395] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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49
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Wu Y, Bi L, Bi W, Li Z, Zhao M, Wang C, Ju J, Peng S. Novel 2-substituted nitronyl nitroxides as free radical scavengers: Synthesis, biological evaluation and structure–activity relationship. Bioorg Med Chem 2006; 14:5711-20. [PMID: 16650996 DOI: 10.1016/j.bmc.2006.04.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2006] [Revised: 03/30/2006] [Accepted: 04/06/2006] [Indexed: 01/12/2023]
Abstract
To develop more potent small molecules with enhanced free radical scavenger properties, we designed and synthesized a series of nitronyl nitroxide derivatives 4a-h. A lead compound 4f was discovered based on Ach-induced vascorelaxation assay. Further chemical modification based on this scaffold provided a new series of 2-substituted phenylnitronyl nitroxide derivatives 6a-s. The newly synthesized compounds 6a-s possess improved radical scavenger's activity based on PC12 cell survival assay. Compounds 6g,n,o, and s are some of the most potent compounds in terms of NO, H(2)O(2), and OH scavenging ability. 2-Substitued phenylnitronyl nitroxides had a higher radical scavenging activity with the electron-donating group (EDG). In contrast, the introduction of electron-withdrawing group (EWG) to the aromatic ring led to a dramatic decrease in its radical scavenging activity. These results suggest that the electron-donating group (EDG) of the aromatic ring may be an important factor influencing the radical scavenging behavior of these compounds, and the potency of free radical scavenging activity largely depended on the position and electronic properties of the phenyl ring substituents. The enhanced radical scavenging capacities of the novel 2-substituted nitronyl nitroxides may be potential drug leads against the deleterious action of ROS (reactive oxygen species)/RNS (reactive nitrogen species).
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Affiliation(s)
- Yihui Wu
- College of Pharmaceutical Sciences, Capital University of Medical Sciences, Beijing, PR China
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