1
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García-Santos WH, Mayorquín-Torres MC, Maldonado-Domínguez M, Medina-Campos ON, Pedraza-Chaverri J, Iglesias-Arteaga MA. Mechanistic Insights on Pd-Catalyzed Three-Component Reactions of Alkynols, Methyl Orthoformate, and Salicylaldehyde Derivatives. Application to the Synthesis of Steroid Chroman Ketals and Spiroketals with Antioxidant Activity. J Org Chem 2023; 88:14860-14873. [PMID: 37877558 DOI: 10.1021/acs.joc.3c00857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Contrary to our previous report in which a Pd-catalyzed three-component reaction of a steroid alkynol, trimethyl orthoformate, and salicylaldehyde exclusively produced chroman ketals, the same reaction employing 2,5-dihydroxysalicylaldehyde led to a mixture of a chroman ketal and a spiroketal. Provided that both courses of the reaction imply a 4 + 2 inverse demand cycloaddition between an o-quinone methide and an enol ether, density functional theory calculations revealed that the chroman ketal/spiroketal selectivity is governed by both, the rate of the formation of the o-quinone methide and the isomerization of the initially produced exocyclic enol ether─that led to the spiroketal─to its endocyclic partner that produces the chroman ketal. Remarkably, Lewis catalysis is central to the observed reactivity, and the availability of plausible catalytic species controls the overall chemoselectivity. The methodology herein applied and scrutinized enriches the palette of reactions, leading to increased molecular complexity, as demonstrated in the obtained products, whose antioxidant activity and detailed NMR characterization are presented.
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Affiliation(s)
- William H García-Santos
- Facultad de Química, Universidad Nacional Autónoma de México, CDMX, 04510 Mexico City, Mexico
| | | | | | - Omar N Medina-Campos
- Facultad de Química, Universidad Nacional Autónoma de México, CDMX, 04510 Mexico City, Mexico
| | - Jose Pedraza-Chaverri
- Facultad de Química, Universidad Nacional Autónoma de México, CDMX, 04510 Mexico City, Mexico
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2
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Teng H, Wu D, Lu L, Gao C, Wang H, Zhao Y, Wang L. Design and synthesis of 3,4-seco-lupane triterpene derivatives to resist myocardial ischemia-reperfusion injury by inhibiting oxidative stress-mediated mitochondrial dysfunction via the PI3K/AKT/HIF-1α axis. Biomed Pharmacother 2023; 167:115452. [PMID: 37688986 DOI: 10.1016/j.biopha.2023.115452] [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: 07/11/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/11/2023] Open
Abstract
In this study, 86 new seco-lupane triterpenoid derivatives were designed, synthesized, and characterized, and their protective activities against ischemia-reperfusion injury were investigated in vitro and in vivo. Structure-activity relationship studies revealed that most target compounds could protect cardiomyocytes against hypoxia/reoxygenation-induced injury in vitro, with compound 85 being the most active and exhibiting more potent protective activity than clinical first-line drugs. Furthermore, all thiophene derivatives exhibited stronger protective activity than furan, pyridine, and pyrazine derivatives, and the protective activity gradually increased with the extension of the alkyl chain and changed in the substituent. The data from the in-vitro and in-vivo experiments revealed that compound 85 protected mitochondria from damage by inhibiting excessive production of oxidative stressors, such as intracellular ROS, which in turn inhibited the apoptosis and necrotize of cardiomyocytes and reduced infarct size, thereby protecting normal cardiac function. It was associated with enhanced activation of the PI3K/AKT-mediated HIF-1α signaling pathway. Therefore, compound 85 acts as an oxidative stress inhibitor, blocks ROS production, protects mitochondria and cells from myocardial ischemia/reperfusion (MI/R) injury, and represents an effective new drug for treating MI/R injury.
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Affiliation(s)
- Hongbo Teng
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
| | - Di Wu
- Department of Breast Surgery, General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
| | - Luo Lu
- Drug Evaluation Center of Jilin Province, Changchun, Jilin, China
| | - Chunyu Gao
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
| | - Haohao Wang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
| | - Yan Zhao
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China.
| | - Liyan Wang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China.
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3
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Sadiq IZ. Free Radicals and Oxidative Stress: Signaling Mechanisms, Redox Basis for Human Diseases, and Cell Cycle Regulation. Curr Mol Med 2023; 23:13-35. [PMID: 34951363 DOI: 10.2174/1566524022666211222161637] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 11/03/2021] [Accepted: 11/08/2021] [Indexed: 12/16/2022]
Abstract
Free radicals contain one or more unpaired electrons in their valence shell, thus making them unstable, short-lived, and highly reactive species. Excessive generation of these free radicals ultimately leads to oxidative stress causing oxidation and damage to significant macromolecules in the living system and essentially disrupting signal transduction pathways and antioxidants equilibrium. At lower concentrations, ROS serves as "second messengers," influencing many physiological processes in the cell. However, higher concentrations beyond cell capacity cause oxidative stress, contributing to human pathologies such as diabetes, cancer, Parkinson's disease, cardiovascular diseases, cataract, asthma, hypertension, atherosclerosis, arthritis, and Alzheimer's disease. Signaling pathways such as NF-κB, MAPKs, PI3K/Akt/ mTOR, and Keap1-Nrf2- ARE modulate the detrimental effects of oxidative stress by increasing the expression of cellular antioxidant defenses, phase II detoxification enzymes, and decreased production of ROS. Free radicals such as H2O2 are indeed needed for the advancement of the cell cycle as these molecules influence DNA, proteins, and enzymes in the cell cycle pathway. In the course of cell cycle progression, the cellular redox environment becomes more oxidized, moving from the G1 phase, becoming higher in G2/M and moderate in the S phase. Signals in the form of an increase in cellular pro-oxidant levels are required, and these signals are often terminated by a rise in the amount of antioxidants and MnSOD with a decrease in the level of cyclin D1 proteins. Therefore, understanding the mechanism of cell cycle redox regulation will help in the therapy of many diseases.
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Affiliation(s)
- Idris Zubairu Sadiq
- Department of Biochemistry, Faculty of life Sciences, Ahmadu Bello University, Zaria-Nigeria
- Department of Biochemistry, Faculty of Sciences, Maryam Abacha American University of Niger, ADS Avenue, Roi Muhammad VI Du Maroc Maradi, Republique Du Niger
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4
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Cvetkovic T, Saric S, Stefanovic N, Stojiljkovic V, Djordjevic B, Stojanovic D, Cvetkovic M, Deljanin Ilic M. Plasma advanced oxidation products as an additional tool in assessment of post-infarction heart failure. J Int Med Res 2022; 50:3000605221139711. [PMID: 36564997 PMCID: PMC9793051 DOI: 10.1177/03000605221139711] [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] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE To define which oxidative stress markers could be used as diagnostic tools in the assessment of post-infarction heart failure (HF). METHODS This observational study enrolled patients with HF that were divided into three subgroups (ejection fraction [EF] ≥ 50%; EF 40-49%; EF < 40%) and age- and sex-matched healthy control subjects. The plasma concentrations of advanced oxidation protein products (AOPP), thiobarbituric acid reactive substances, catalase activity and free thiols were determined in all participants. RESULTS The study enrolled 81 patients with HF and 68 healthy control subjects. There were significant differences in the values of oxidative stress markers between patients and controls. Oxidative stress parameters did not differ between the subgroups of patients, except for AOPP, which was significantly higher in the EF < 40% group. Univariate and multivariate logistic regression analyses showed an association between AOPP and HF in the EF ≥ 50% group, while receiver operating characteristic (ROC) curve analysis identified a cut-off value of 60.89 µmol/l for AOPP. CONCLUSIONS Based on the ROC curve analysis of AOPP and the higher significance in the multivariate analyses for patients with EF ≥ 50%, these current results suggest that AOPP could be a useful additional tool in the assessment of post-infarction HF.
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Affiliation(s)
- Tatjana Cvetkovic
- Institute of Biochemistry, Medical Faculty, University of Nis,
Nis, Serbia,Centre of Medical and Clinical Biochemistry, University Clinical
Centre, Nis, Serbia
| | - Sandra Saric
- Institute for Treatment and Rehabilitation “Niska Banja”, Nis,
Serbia
| | - Nikola Stefanovic
- Department of Pharmacy, Medical Faculty, University of Nis, Nis,
Serbia
| | - Vladana Stojiljkovic
- Institute of Biochemistry, Medical Faculty, University of Nis,
Nis, Serbia,Centre of Medical and Clinical Biochemistry, University Clinical
Centre, Nis, Serbia,Vladana Stojiljkovic, Medical Faculty,
University of Nis, Bul. Dr Zorana Djindjica 81, 18000 Nis, Serbia.
| | - Branka Djordjevic
- Institute of Biochemistry, Medical Faculty, University of Nis,
Nis, Serbia
| | - Dijana Stojanovic
- Institute of Pathophysiology, Medical Faculty, University of
Nis, Nis, Serbia
| | - Mina Cvetkovic
- Institute of Cardiology, Deutsches Herzzentrum Berlin, Berlin,
Germany
| | - Marina Deljanin Ilic
- Institute for Treatment and Rehabilitation “Niska Banja”, Nis,
Serbia,Department of Internal Medicine, Medical Faculty, University of
Nis, Nis, Serbia
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5
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Ghorbanzadeh V, Jafarpour A, Pirnia A, Pajouhi N, Khaksarian M, Veiskarami S, Nazari A. The role of vasopressin V1A and oxytocin OTR receptors in protective effects of arginine vasopressin against H 2O 2-induced oxidative stress in H9C2 cells. Arch Physiol Biochem 2022; 128:830-835. [PMID: 32141340 DOI: 10.1080/13813455.2020.1729816] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Oxidative stress, has been shown to play an important role in the pathophysiology of cardiac remodelling and heart failure. The aim of study is effect of arginine vasopressin (AVP) on apoptosis of cardiomyocyte via its receptors. MATERIALS AND METHODS The cell viability effect of AVP in H9C2 cardiomyocytes was assayed using the MTT method. The transcription and translation level of apoptosis genes (Bax, Bcl-2, caspase-3) were discovered with qRT-PCR and western blotting. RESULTS The results showed that vasopressin could reduce apoptosis in cardiomyocytes cell line through downregulation of caspase-3, BAX and upregulation of Bcl-2 (p < .001). Also, there was a decrease in anti-apoptosis effect of vasopressin when V1A and OTR receptors were blocked with their antagonists. DISCUSSION These results suggest that activation of V1A and OTR receptors in H9C2 cells mediate protective effect of vasopressin via regulating apoptosis marker that lead to cell survival under conditions of stress oxidative.Key pointAVP may contribute to the improvement of heart ischaemia through its actions on V1A and OTR receptors.
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Affiliation(s)
- Vajihe Ghorbanzadeh
- Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences Khorramabad, Iran
| | - Afsaneh Jafarpour
- Cardiovascular Research Center, Shahid Rahimi Hospital, Lorestan University of Medical Sciences, Khoramabad, Iran
| | - Afshin Pirnia
- Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences Khorramabad, Iran
| | - Naser Pajouhi
- Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences Khorramabad, Iran
- Department of Physiology, Lorestan University of Medical Science, Khorramabad, Iran
| | - Mojtaba Khaksarian
- Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences Khorramabad, Iran
- Department of Physiology, Lorestan University of Medical Science, Khorramabad, Iran
| | - Saeed Veiskarami
- Department of animal science, Lorestan Agricultural and Natural Resources Research and Education Center, Khorramabad, Iran
| | - Afshin Nazari
- Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences Khorramabad, Iran
- Cardiovascular Research Center, Shahid Rahimi Hospital, Lorestan University of Medical Sciences, Khoramabad, Iran
- Department of Physiology, Lorestan University of Medical Science, Khorramabad, Iran
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6
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Bahr AC, Luz JPDA, Teixeira RB, Türck P, Zimmer A, Castro ALDE, Reis EED, Visioli F, Belló-Klein A, Araujo ASDAR, Schenkel PC. The brief methylprednisolone administration is crucial to mitigate cardiac dysfunction after myocardial infarction. AN ACAD BRAS CIENC 2021; 93:e20210297. [PMID: 34706009 DOI: 10.1590/0001-3765202120210297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 07/01/2021] [Indexed: 01/24/2023] Open
Abstract
Acute myocardial infarction (AMI) is one of the major causes of heart failure and mortality. Glucocorticoids administration post-infarction has long been proposed, but it has shown conflicting results so far. This controversy may be associated with the glucocorticoid type and the period when it is administered. To elucidate these, the present aims to evaluate if the brief methylprednisolone acetate administration is determinant for heart adaptation after AMI. Male Wistar rats were divided into 3 groups: sham-operated (SHAM); infarcted (AMI); infarcted treated with methylprednisolone acetate (AMI+M). Immediately after surgery, the AMI+M group received a single dose of methylprednisolone acetate (40 mg/kg i.m.). After 56 days, the cardiac function was assessed and lungs, liver and heart were collected to determine rates of hypertrophy and congestion. Heart was used for oxidative stress and metalloproteinase activity analyses. Methylprednisolone acetate attenuated matrix metalloproteinase-2 activity, cardiac dilatation, and prevented the onset of pulmonary congestion, as well as avoided cardiac hypertrophy. Our data indicate that administration of methylprednisolone acetate shortly after AMI may be a therapeutic alternative for attenuation of detrimental ventricular remodeling.
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Affiliation(s)
- Alan Christhian Bahr
- Universidade Federal do Rio Grande do Sul, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, R. Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
| | - Julia Paim DA Luz
- Universidade Federal do Rio Grande do Sul, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, R. Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
| | - Rayane Brinck Teixeira
- Universidade Federal do Rio Grande do Sul, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, R. Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
| | - Patrick Türck
- Universidade Federal do Rio Grande do Sul, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, R. Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
| | - Alexsandra Zimmer
- Universidade Federal do Rio Grande do Sul, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, R. Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
| | - Alexandre Luz DE Castro
- Universidade Federal do Rio Grande do Sul, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, R. Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
| | - Eduardo Echer Dos Reis
- Universidade Federal do Rio Grande do Sul, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, R. Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
| | - Fernanda Visioli
- Universidade Federal do Rio Grande do Sul, Departamento de Patologia Oral, R. Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
| | - Adriane Belló-Klein
- Universidade Federal do Rio Grande do Sul, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, R. Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
| | - Alex Sander DA Rosa Araujo
- Universidade Federal do Rio Grande do Sul, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, R. Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
| | - Paulo Cavalheiro Schenkel
- Universidade Federal do Rio Grande do Sul, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, R. Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil.,Universidade Federal de Pelotas, Departamento de Fisiologia e Farmacologia, R. Gomes Carneiro, 1, 96010-610 Pelotas, RS, Brazil
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7
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Daiber A, Andreadou I, Oelze M, Davidson SM, Hausenloy DJ. Discovery of new therapeutic redox targets for cardioprotection against ischemia/reperfusion injury and heart failure. Free Radic Biol Med 2021; 163:325-343. [PMID: 33359685 DOI: 10.1016/j.freeradbiomed.2020.12.026] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/10/2020] [Accepted: 12/16/2020] [Indexed: 02/06/2023]
Abstract
Global epidemiological studies reported a shift from maternal/infectious communicable diseases to chronic non-communicable diseases and a major part is attributable to atherosclerosis and metabolic disorders. Accordingly, ischemic heart disease was identified as a leading risk factor for global mortality and morbidity with a prevalence of 128 million people. Almost 9 million premature deaths can be attributed to ischemic heart disease and subsequent acute myocardial infarction and heart failure, also representing a substantial socioeconomic burden. As evidenced by typical oxidative stress markers such as lipid peroxidation products or oxidized DNA/RNA bases, the formation of reactive oxygen species by various sources (NADPH oxidases, xanthine oxidase and mitochondrial resperatory chain) plays a central role for the severity of ischemia/reperfusion damage. The underlying mechanisms comprise direct oxidative damage but also adverse redox-regulation of kinase and calcium signaling, inflammation and cardiac remodeling among others. These processes and the role of reactive oxygen species are discussed in the present review. We also present and discuss potential targets for redox-based therapies that are either already established in the clinics (e.g. guanylyl cyclase activators and stimulators) or at least successfully tested in preclinical models of myocardial infarction and heart failure (mitochondria-targeted antioxidants). However, reactive oxygen species have not only detrimental effects but are also involved in essential cellular signaling and may even act protective as seen by ischemic pre- and post-conditioning or eustress - which makes redox therapy quite challenging.
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Affiliation(s)
- Andreas Daiber
- Department of Cardiology 1, Molecular Cardiology, University Medical Center, Langenbeckstr. 1, 55131, Mainz, Germany; Partner Site Rhine-Main, German Center for Cardiovascular Research (DZHK), Langenbeckstr. 1, 55131, Mainz, Germany.
| | - Ioanna Andreadou
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, 15771, Athens, Greece
| | - Matthias Oelze
- Department of Cardiology 1, Molecular Cardiology, University Medical Center, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Sean M Davidson
- The Hatter Cardiovascular Institute, 67 Chenies Mews, London, WC1E 6HX, United Kingdom
| | - Derek J Hausenloy
- The Hatter Cardiovascular Institute, 67 Chenies Mews, London, WC1E 6HX, United Kingdom; Cardiovascular & Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore; National Heart Research Institute Singapore, National Heart Centre, Singapore; Yong Loo Lin School of Medicine, National University Singapore, Singapore; Cardiovascular Research Center, College of Medical and Health Sciences, Asia University, Taiwan.
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8
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Brancaccio M, Mennitti C, Cesaro A, Fimiani F, Moscarella E, Caiazza M, Gragnano F, Ranieri A, D’Alicandro G, Tinto N, Mazzaccara C, Lombardo B, Pero R, Limongelli G, Frisso G, Calabrò P, Scudiero O. Dietary Thiols: A Potential Supporting Strategy against Oxidative Stress in Heart Failure and Muscular Damage during Sports Activity. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17249424. [PMID: 33339141 PMCID: PMC7765667 DOI: 10.3390/ijerph17249424] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 12/11/2022]
Abstract
Moderate exercise combined with proper nutrition are considered protective factors against cardiovascular disease and musculoskeletal disorders. However, physical activity is known not only to have positive effects. In fact, the achievement of a good performance requires a very high oxygen consumption, which leads to the formation of oxygen free radicals, responsible for premature cell aging and diseases such as heart failure and muscle injury. In this scenario, a primary role is played by antioxidants, in particular by natural antioxidants that can be taken through the diet. Natural antioxidants are molecules capable of counteracting oxygen free radicals without causing cellular cytotoxicity. In recent years, therefore, research has conducted numerous studies on the identification of natural micronutrients, in order to prevent or mitigate oxidative stress induced by physical activity by helping to support conventional drug therapies against heart failure and muscle damage. The aim of this review is to have an overview of how controlled physical activity and a diet rich in antioxidants can represent a “natural cure” to prevent imbalances caused by free oxygen radicals in diseases such as heart failure and muscle damage. In particular, we will focus on sulfur-containing compounds that have the ability to protect the body from oxidative stress. We will mainly focus on six natural antioxidants: glutathione, taurine, lipoic acid, sulforaphane, garlic and methylsulfonylmethane.
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Affiliation(s)
- Mariarita Brancaccio
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy;
| | - Cristina Mennitti
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (C.M.); (N.T.); (C.M.); (B.L.); (R.P.)
| | - Arturo Cesaro
- Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, 81100 Naples, Italy; (A.C.); (E.M.); (F.G.); (G.L.)
- Division of Clinical Cardiology, A.O.R.N. “Sant’Anna e San Sebastiano”, 81100 Caserta, Italy
| | - Fabio Fimiani
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi Hospital, 81100 Naples, Italy; (F.F.); (M.C.)
| | - Elisabetta Moscarella
- Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, 81100 Naples, Italy; (A.C.); (E.M.); (F.G.); (G.L.)
- Division of Clinical Cardiology, A.O.R.N. “Sant’Anna e San Sebastiano”, 81100 Caserta, Italy
| | - Martina Caiazza
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi Hospital, 81100 Naples, Italy; (F.F.); (M.C.)
| | - Felice Gragnano
- Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, 81100 Naples, Italy; (A.C.); (E.M.); (F.G.); (G.L.)
- Division of Clinical Cardiology, A.O.R.N. “Sant’Anna e San Sebastiano”, 81100 Caserta, Italy
| | | | - Giovanni D’Alicandro
- Department of Neuroscience and Rehabilitation, Center of Sports Medicine and Disability, AORN, Santobono-Pausillipon, 80122 Naples, Italy;
| | - Nadia Tinto
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (C.M.); (N.T.); (C.M.); (B.L.); (R.P.)
- Ceinge Biotecnologie Avanzate S. C. a R. L., 80131 Naples, Italy;
| | - Cristina Mazzaccara
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (C.M.); (N.T.); (C.M.); (B.L.); (R.P.)
| | - Barbara Lombardo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (C.M.); (N.T.); (C.M.); (B.L.); (R.P.)
- Ceinge Biotecnologie Avanzate S. C. a R. L., 80131 Naples, Italy;
| | - Raffaela Pero
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (C.M.); (N.T.); (C.M.); (B.L.); (R.P.)
- Task Force on Microbiome Studies, University of Naples Federico II, 80100 Naples, Italy
| | - Giuseppe Limongelli
- Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, 81100 Naples, Italy; (A.C.); (E.M.); (F.G.); (G.L.)
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi Hospital, 81100 Naples, Italy; (F.F.); (M.C.)
| | - Giulia Frisso
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (C.M.); (N.T.); (C.M.); (B.L.); (R.P.)
- Ceinge Biotecnologie Avanzate S. C. a R. L., 80131 Naples, Italy;
- Correspondence: (G.F.); (P.C.); (O.S.); Tel.: +39-347-240-9595 (G.F.); +39-338-434-6963 (P.C.); +39-339-613-9908 (O.S.)
| | - Paolo Calabrò
- Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, 81100 Naples, Italy; (A.C.); (E.M.); (F.G.); (G.L.)
- Division of Clinical Cardiology, A.O.R.N. “Sant’Anna e San Sebastiano”, 81100 Caserta, Italy
- Correspondence: (G.F.); (P.C.); (O.S.); Tel.: +39-347-240-9595 (G.F.); +39-338-434-6963 (P.C.); +39-339-613-9908 (O.S.)
| | - Olga Scudiero
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (C.M.); (N.T.); (C.M.); (B.L.); (R.P.)
- Ceinge Biotecnologie Avanzate S. C. a R. L., 80131 Naples, Italy;
- Task Force on Microbiome Studies, University of Naples Federico II, 80100 Naples, Italy
- Correspondence: (G.F.); (P.C.); (O.S.); Tel.: +39-347-240-9595 (G.F.); +39-338-434-6963 (P.C.); +39-339-613-9908 (O.S.)
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9
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Peng M, Zhao Y, Chen D, Tan Y. Free‐Standing 3D Electrodes for Electrochemical Detection of Hydrogen Peroxide. ChemCatChem 2019. [DOI: 10.1002/cctc.201900913] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Ming Peng
- College of Materials Science and EngineeringHunan University Changsha Hunan 410082 P. R. China
| | - Yang Zhao
- College of Materials Science and EngineeringHunan University Changsha Hunan 410082 P. R. China
| | - Dechao Chen
- College of Materials Science and EngineeringHunan University Changsha Hunan 410082 P. R. China
| | - Yongwen Tan
- College of Materials Science and EngineeringHunan University Changsha Hunan 410082 P. R. China
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10
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Glucagon-like peptide-1 attenuates endoplasmic reticulum stress-induced apoptosis in H9c2 cardiomyocytes during hypoxia/reoxygenation through the GLP-1R/PI3K/Akt pathways. Naunyn Schmiedebergs Arch Pharmacol 2019; 392:715-722. [PMID: 30762075 DOI: 10.1007/s00210-019-01625-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 01/28/2019] [Indexed: 02/05/2023]
Abstract
Endoplasmic reticulum (ER) stress-induced apoptosis is a major cause of myocardial ischemia/reperfusion (I/R) injury. Emerging evidence indicates that glucagon-like peptide-1 (GLP-1) has potential cardioprotective effects. However, the precise mechanisms underlying the involvement of GLP-1 in I/R injury remain largely unknown. In the present study, we aimed to determine whether GLP-1 attenuates hypoxia/reoxygenation (H/R) injury in cardiomyocytes and to further elucidate the underlying signaling pathway. The results indicate that GLP-1 reversed the increased apoptotic ratio, the increased lactate dehydrogenase (LDH) levels, the reduced cell viability, the increased Caspase-3 activity, and the increased Bax/Bcl-2 ratio caused by H/R. Importantly, GLP-1 significantly decreased the expression of H/R-induced ER stress proteins (GRP78, CHOP) and Caspase-12. In addition, we found that GLP-1 increased the expression of p-Akt in H9c2 cells with H/R injuries, and that the protective action of GLP-1 against H/R-induced injury was blocked by the GLP-1 receptor (GLP-1R) inhibitor Exendin9-39 and the PI3K inhibitor LY294002. Exendin9-39 and LY294002 also blocked the downregulation of ER stress protein expression by GLP-1, after H/R injury. Therefore, we have shown that GLP-1 exerts its cardioprotective effects by alleviating ER stress-induced apoptosis due to H/R injury and that these effects are most likely associated with the activation of GLP-1R/PI3K/Akt signaling pathway.
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11
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Synthesis, in Vitro Biological Evaluation, and Oxidative Transformation of New Flavonol Derivatives: The Possible Role of the Phenyl-N,N-Dimethylamino Group. Molecules 2018; 23:molecules23123161. [PMID: 30513682 PMCID: PMC6320925 DOI: 10.3390/molecules23123161] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 11/29/2018] [Accepted: 11/29/2018] [Indexed: 12/15/2022] Open
Abstract
Six new flavonols (6a–f) were synthesized with Claisen–Schmidt and Suzuki reactions and they were fully characterized by spectroscopic methods. In order to evaluate their antioxidant activities, their oxygen radical absorption capacity and ferric reducing antioxidant power were measured, along with their free radical scavenging activity against 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) and 2,2-diphenyl-1-picrylhydrazylradicals. In addition, their cytotoxicity on H9c2 cardiomyoblast cells was also assessed by a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Compounds bearing the phenyl-N,N-dimethylamino group (6a, 6c, and 6e) exhibited promising antioxidant potency and did not have any cytotoxic effect. After a consideration of these data, the oxidative transformation of the 6c compound was investigated in vitro with a chemical Fenton reaction and the identification of the formed oxidation products was performed by mass spectrometry. Two potential metabolites were detected. Based on these results, compound 6c can be a model compound for future developments. Overall, this work has proved the involvement of the phenyl-N,N-dimethylamino group in the antioxidant activity of flavonols.
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Oxidative Stress as Cause, Consequence, or Biomarker of Altered Female Reproduction and Development in the Space Environment. Int J Mol Sci 2018; 19:ijms19123729. [PMID: 30477143 PMCID: PMC6320872 DOI: 10.3390/ijms19123729] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 11/12/2018] [Accepted: 11/20/2018] [Indexed: 12/22/2022] Open
Abstract
Oxidative stress has been implicated in the pathophysiology of numerous terrestrial disease processes and associated with morbidity following spaceflight. Furthermore, oxidative stress has long been considered a causative agent in adverse reproductive outcomes. The purpose of this review is to summarize the pathogenesis of oxidative stress caused by cosmic radiation and microgravity, review the relationship between oxidative stress and reproductive outcomes in females, and explore what role spaceflight-induced oxidative damage may have on female reproductive and developmental outcomes.
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T MM, Anand T, Khanum F. Attenuation of cytotoxicity induced by tBHP in H9C2 cells by Bacopa monniera and Bacoside A. PATHOPHYSIOLOGY 2018; 25:143-149. [DOI: 10.1016/j.pathophys.2018.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/08/2018] [Accepted: 03/21/2018] [Indexed: 12/20/2022] Open
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Wu Q, Madany P, Dobson JR, Schnabl JM, Sharma S, Smith TC, van Wijnen AJ, Stein JL, Lian JB, Stein GS, Muthuswami R, Imbalzano AN, Nickerson JA. The BRG1 chromatin remodeling enzyme links cancer cell metabolism and proliferation. Oncotarget 2018; 7:38270-38281. [PMID: 27223259 PMCID: PMC5122388 DOI: 10.18632/oncotarget.9505] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 05/01/2016] [Indexed: 12/20/2022] Open
Abstract
Cancer cells reprogram cellular metabolism to meet the demands of growth. Identification of the regulatory machinery that regulates cancer-specific metabolic changes may open new avenues for anti-cancer therapeutics. The epigenetic regulator BRG1 is a catalytic ATPase for some mammalian SWI/SNF chromatin remodeling enzymes. BRG1 is a well-characterized tumor suppressor in some human cancers, but is frequently overexpressed without mutation in other cancers, including breast cancer. Here we demonstrate that BRG1 upregulates de novo lipogenesis and that this is crucial for cancer cell proliferation. Knockdown of BRG1 attenuates lipid synthesis by impairing the transcription of enzymes catalyzing fatty acid and lipid synthesis. Remarkably, exogenous addition of palmitate, the key intermediate in fatty acid synthesis, rescued the cancer cell proliferation defect caused by BRG1 knockdown. Our work suggests that targeting BRG1 to reduce lipid metabolism and, thereby, to reduce proliferation, has promise for epigenetic therapy in triple negative breast cancer.
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Affiliation(s)
- Qiong Wu
- Department of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Pasil Madany
- Department of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Jason R Dobson
- Department of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Jake M Schnabl
- Department of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Soni Sharma
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, Delhi, India
| | - Tara C Smith
- Department of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Andre J van Wijnen
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA
| | - Janet L Stein
- Department of Biochemistry and Vermont Cancer Center for Basic and Translational Research, University of Vermont College of Medicine, Burlington, WA, USA
| | - Jane B Lian
- Department of Biochemistry and Vermont Cancer Center for Basic and Translational Research, University of Vermont College of Medicine, Burlington, WA, USA
| | - Gary S Stein
- Department of Biochemistry and Vermont Cancer Center for Basic and Translational Research, University of Vermont College of Medicine, Burlington, WA, USA
| | - Rohini Muthuswami
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, Delhi, India
| | - Anthony N Imbalzano
- Department of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Jeffrey A Nickerson
- Department of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA, USA
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Vulesevic B, Sirois MG, Allen BG, de Denus S, White M. Subclinical Inflammation in Heart Failure: A Neutrophil Perspective. Can J Cardiol 2018; 34:717-725. [PMID: 29801737 DOI: 10.1016/j.cjca.2018.01.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 01/18/2018] [Accepted: 01/18/2018] [Indexed: 12/18/2022] Open
Abstract
Although it is widely recognized that inflammation plays a critical role in the development and pathology of heart failure (HF), very little is known about the involvement of one of the most abundant immune cells in the blood, a primary immune response cell: the neutrophil. This review summarizes the current literature on the role of subclinical inflammation, with a focus on the neutrophil in the pathophysiology of the HF syndrome. Some emerging therapeutic strategies are also discussed.
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Affiliation(s)
- Branka Vulesevic
- Research Center, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada; Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montreal, Québec, Canada
| | - Martin G Sirois
- Research Center, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada; Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montreal, Québec, Canada
| | - Bruce G Allen
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Québec, Canada
| | - Simon de Denus
- Research Center, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada; Faculty of Pharmacy, Université de Montréal, Montreal, Québec, Canada
| | - Michel White
- Research Center, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada; Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montreal, Québec, Canada; Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Québec, Canada.
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Ikumawoyi V, Agbaje E, Awodele O. Antigenotoxic and Antioxidant Activity of Methanol Stem Bark Extract of Napoleona Vogelii Hook & Planch (Lecythidaceae) In Cyclophosphamide-Induced Genotoxicity. Open Access Maced J Med Sci 2017; 5:866-874. [PMID: 29362611 PMCID: PMC5771287 DOI: 10.3889/oamjms.2017.210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 04/19/2017] [Accepted: 05/19/2017] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND: Napoleona vogelii is used in traditional medicine for cancer management. AIM: The study was conducted to evaluate the antigenotoxic and antioxidant activities of methanol stem bark extract of N. vogelii in male Sprague Dawley rats. MATERIALS AND METHOD: Thirty male Sprague Dawley rats were randomly divided into group 1 (control) administered 10 mL/kg distilled water, groups 2 and 3 were co-administered 100 mg/kg, 200 mg/kg of N. vogelli and 5 mg/kg cyclophosphamide (CPA) respectively for 7 days p.o. Groups 4 and 5 were administered only 5 mg/kg CPA and 200 mg/kg NV respectively. RESULTS: The LD50 oral was greater than 4 g/kg. There were significant (p < 0.0001) increases in plasma enzymatic and non-enzymatic antioxidant enzymes and significant (p < 0.0001) decrease in percentage micronuclei in bone marrow of extract treated rats compared to rats administered 5 mg/kg CPA alone. There was steatosis pointing to cytotoxic injury in the liver of rats co-administered 200 mg/kg NV and 5 mg/kg CPA. Gas chromatography-mass spectrometry analysis of the extract showed the presence of phytol and unsaturated fatty acids. CONCLUSION: N. vogelii possesses antigenotoxic and antioxidant activities associated with the presence of phytochemicals, phytol and unsaturated fatty acids.
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Affiliation(s)
- Victor Ikumawoyi
- Department of Pharmacology, Therapeutics and Toxicology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Idi araba, Lagos, Nigeria
| | - Esther Agbaje
- Department of Pharmacology, Therapeutics and Toxicology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Idi araba, Lagos, Nigeria
| | - Olufunsho Awodele
- Department of Pharmacology, Therapeutics and Toxicology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Idi araba, Lagos, Nigeria
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Abstract
BACKGROUND Recent evidence highlights the reality of unprecedented human exposure to toxic chemical agents found throughout our environment - in our food and water supply, in the air we breathe, in the products we apply to our skin, in the medical and dental materials placed into our bodies, and even within the confines of the womb. With biomonitoring confirming the widespread bioaccumulation of myriad toxicants among population groups, expanding research continues to explore the pathobiological impact of these agents on human metabolism. METHODS This review was prepared by assessing available medical and scientific literature from Medline as well as by reviewing several books, toxicology journals, government publications, and conference proceedings. The format of a traditional integrated review was chosen. RESULTS Toxicant exposure and accrual has been linked to numerous biochemical and pathophysiological mechanisms of harm. Some toxicants effect metabolic disruption via multiple mechanisms. CONCLUSIONS As a primary causative determinant of chronic disease, toxicant exposures induce metabolic disruption in myriad ways, which consequently result in varied clinical manifestations, which are then categorized by health providers into innumerable diagnoses. Chemical disruption of human metabolism has become an etiological determinant of much illness throughout the lifecycle, from neurodevelopmental abnormalities in-utero to dementia in the elderly.
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Affiliation(s)
- Stephen J Genuis
- a Faculty of Medicine, University of Alberta , Edmonton , Alberta , Canada
| | - Edmond Kyrillos
- b Department of Family Medicine , Faculty of Medicine, University of Ottawa , Ottawa , Ontario , Canada
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Yadav S, Kalra N, Ganju L, Singh M. Activator protein-1 (AP-1): a bridge between life and death in lung epithelial (A549) cells under hypoxia. Mol Cell Biochem 2017; 436:99-110. [PMID: 28589371 DOI: 10.1007/s11010-017-3082-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 05/30/2017] [Indexed: 02/06/2023]
Abstract
Activator protein-1 (AP-1) transcription factor plays a central role in hypoxia to modulate the expression of genes that decides the fate of the cell. The aim of the present study was to explore the role of AP-1 subunits in lung epithelial (A549) cells under hypoxia. Cell cycle studies by flow cytometry indicated that cell viability was unaffected by the initial hypoxia exposure (0.5% O2 at 37 °C) for 6 and 12 h. However, both transient cell cycle arrest and cell death was detected at 24 and 48 h. Flow cytometry and spectrofluorometry data confirmed the increase in ROS levels. Elevated ROS and calcium levels activated the stress-related MAPK signaling cascade. ERK and JNK were activated in early hypoxic exposure (within 6 h), whereas p38 were activated in 48 h of hypoxia. These subtypes further stimulated the subunits of AP-1 at different times of hypoxia exposure to orchestrate different genes responsible for cell proliferation (6 and 12 h) and apoptosis (24 and 48 h). Our results clearly depict the role of AP-1 heterodimer, i.e., p-c-jun/c-fos, p-c-jun/fosB, junD/c-fos, and junD/fosB in cell proliferation/survival by regulating the expression of Bcl-2 and cyclins (D1 and B1) at 6 h and 12 h of hypoxia, whereas junB/Fra-1 heterodimer have important role in apoptosis by regulating the expression of p53, Bax, and cyclin-dependent kinase inhibitors (p16, p21, p27) at 24 h and 48 h of hypoxia. Also, the cell survival signaling pathway NO-AKT interrupted at 24 h and 48 h of hypoxia indicating cell death. In conclusion, hypoxia for different time points activated different subunits of AP-1 that combined to form different heterodimers. These dimers regulated the expression of genes responsible for cell proliferation and apoptosis. Since, AP-1 plays a role in the decisive phenomenon of the cell to choose between proliferation and apoptosis; thus, its subunits or dimers could be a good therapeutic target for many diseases.
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Affiliation(s)
- Seema Yadav
- Experimental Biology Division, Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Timarpur, Lucknow Road, Delhi, 110054, India
| | - Namita Kalra
- Metabolic Cell Signaling Research Division, INMAS- DRDO, Timarpur, Lucknow Road, Delhi, 110054, India
| | - Lilly Ganju
- Experimental Biology Division, Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Timarpur, Lucknow Road, Delhi, 110054, India
| | - Mrinalini Singh
- Experimental Biology Division, Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Timarpur, Lucknow Road, Delhi, 110054, India.
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Ai F, Zheng J, Zhang Y, Fan T. Inhibition of 12/15-LO ameliorates CVB3-induced myocarditis by activating Nrf2. Chem Biol Interact 2017; 272:65-71. [DOI: 10.1016/j.cbi.2017.05.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 04/21/2017] [Accepted: 05/11/2017] [Indexed: 12/29/2022]
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Trabelsi L, Mnari A, Abdel-Daim MM, Abid-Essafi S, Aleya L. Therapeutic properties in Tunisian hot springs: first evidence of phenolic compounds in the cyanobacterium Leptolyngbya sp. biomass, capsular polysaccharides and releasing polysaccharides. Altern Ther Health Med 2016; 16:515. [PMID: 27964734 PMCID: PMC5153682 DOI: 10.1186/s12906-016-1492-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 11/30/2016] [Indexed: 02/04/2023]
Abstract
BACKGROUND In Tunisia, the use of hot spring waters for both health and recreation is a tradition dating back to Roman times. In fact, thermal baths, usually called "Hammam" are recommended as a therapeutic and prophylactic measure against many types of illness and toxicity. While the chemical concentration of thermal water is admittedly associated with its therapeutic effects, the inclusion in spa waters of efficient bioproduct additives produced by photosynthetic microorganisms and that act against oxidative stress may comprise a significant supplementary value for thermal centers. The aim of this study was to investigate the antioxidant potential of the Tunisian thermophilic cyanobacterium Leptolyngbya sp. and to determine its phytochemical constituents and phenolic profile. METHODS BME (Biomass Methanolic Extract), CME (Capsular polysaccharides Methanolic Extract) and RME (Releasing polysaccharides Methanolic Extract) of Leptolyngbya sp. were examined for their antioxidant activities by means of DPPH, hydroxyl radical scavenging and ferrous ion chelating assays. Their total phenols, flavonoids, carotenoids, Mycosporine-like amino acids (MAAs) and vitamin C contents, as well as their phenolic profiles were also determined. RESULTS BME has the highest content of phenols (139 ± 1.2 mg/g), flavonoids (34.9 ± 0.32 mg CEQ/g), carotenoids (2.03 ± 0.56 mg/g) and vitamin C (15.7 ± 1.55 mg/g), while the highest MAAs content (0.42 ± 0.03 mg/g) was observed in CME. BME presented both the highest DPPH and hydroxyl radical scavenging ability with an IC50 of 0.07 and 0.38 mg/ml, respectively. The highest ferrous chelating capacity was detected in CME with an IC50 = 0.59 mg/ml. Phenolic profiles revealed the presence of 25 phenolic compounds with the existence of hydroxytyrosol, oleuropein, resveratrol and pinoresinol. CONCLUSION The study demonstrated that the cyanobacterium Leptolyngbya sp. possesses abundant natural antioxidant products which may have prophylactic and therapeutic effects on many types of illness and toxicity. The present findings not only explain and reinforce the rationale behind traditional therapeutic practices in Tunisia in the exploitation of the country's hot springs, but support the addition of Leptolyngbya to thermal waters as a means to enhance the value and reputation of the curative nature of Tunisian thermal waters.
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Kawamoto R, Ninomiyax D, Kusunoki T, Kasai Y, Ohtsuka N, Kumagi T. Oxidative stress is associated with increased arterial stiffness in middle-aged and elderly community-dwelling persons. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.jcgg.2016.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Cardamonin Alleviates Pressure Overload-induced Cardiac Remodeling and Dysfunction Through Inhibition of Oxidative Stress. J Cardiovasc Pharmacol 2016; 68:441-451. [DOI: 10.1097/fjc.0000000000000430] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Thyroid hormones improve cardiac function and decrease expression of pro-apoptotic proteins in the heart of rats 14 days after infarction. Apoptosis 2016; 21:184-94. [PMID: 26659365 DOI: 10.1007/s10495-015-1204-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Apoptosis is a key process associated with pathological cardiac remodelling in early-phase post-myocardial infarction. In this context, several studies have demonstrated an anti-apoptotic effect of thyroid hormones (TH). The aim of this study was to evaluate the effects of TH on the expression of proteins associated with the apoptotic process 14 days after infarction. Male Wistar rats (300-350 g) (n = 8/group) were divided into four groups: Sham-operated (SHAM), infarcted (AMI), sham-operated + TH (SHAMT) and infarcted + TH (AMIT). For 12 days, the animals received T3 and T4 [2 and 8 µg/(100 g day)] by gavage. After this, the rats were submitted to haemodynamic and echocardiographic analysis, and then were sacrificed and the heart tissue was collected for molecular analysis. Statistical analyses included two-way ANOVA with Student-Newman-Keuls post test. Ethics Committee number: 23262. TH administration prevented the loss of ventricular wall thickness and improved cardiac function in the infarcted rats 14 days after the injury. AMI rats presented an increase in the pro-apoptotic proteins p53 and JNK. The hormonal treatment prevented this increase in AMIT rats. In addition, TH administration decreased the Bax:Bcl-2 ratio in the infarcted rats. TH administration improved cardiac functional parameters, and decreased the expression of pro-apoptotic proteins 14 days after myocardial infarction.
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Borba DL, Hipólito UV, Pereira YCL. Early diagnosis of atherosclerosis with panoramic radiographs: a review. J Vasc Bras 2016; 15:302-307. [PMID: 29930608 PMCID: PMC5829729 DOI: 10.1590/1677-5449.002316] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Carotid artery disease has been linked with cerebral vascular accident, also known as stroke, cerebral hemorrhage, or cerebral ischemia. It is caused by narrowing or obstruction of arteries in the neck (the carotid arteries) that are responsible for transporting blood from the aorta to the brain. Panoramic radiographs are used in dentistry to show both dental arches as a supplement to the clinical dental examination. The objective of this study is to highlight the importance of panoramic radiographs for diagnosis of arterial disease, by means of a bibliographic review. The PubMed database was searched using the keywords “atherosclerosis” and “panoramic”, with the filters “last 5 years” and “humans”. Twenty articles were identified, six of which were chosen for this study because they were open access. The review concluded that panoramic radiographs enable early diagnosis of carotid artery calcification, resulting in earlier interventions, and offer an accessible cost.
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Affiliation(s)
- Daiane Landim Borba
- Faculdade de Ciências do Tocantins - FACIT, Curso de Odontologia, Araguaína, TO, Brazil
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Shen P, Feng X, Zhang X, Huang X, Liu S, Lu X, Li J, You J, Lu J, Li Z, Ye J, Liu P. SIRT6 suppresses phenylephrine-induced cardiomyocyte hypertrophy though inhibiting p300. J Pharmacol Sci 2016; 132:31-40. [DOI: 10.1016/j.jphs.2016.03.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 03/23/2016] [Accepted: 03/25/2016] [Indexed: 01/01/2023] Open
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Wu SH, Shu XO, Milne G, Xiang YB, Zhang X, Cai Q, Fazio S, Linton MF, Chen H, Purdue M, Rothman N, Gao YT, Zheng W, Yang G. Uric acid correlates to oxidation and inflammation in opposite directions in women. Biomarkers 2016; 20:225-31. [PMID: 26301880 PMCID: PMC4989504 DOI: 10.3109/1354750x.2015.1068852] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE To evaluate the association of uric acid (UA) levels with a panel of markers of oxidative stress and inflammation. METHODS Plasma UA levels, along with a panel of oxidative stress and inflammatory markers, were measured in 755 Chinese women. RESULTS Plasma UA levels were inversely associated with urinary levels of the oxidative stress marker F2-isoprostanes and positively correlated to levels of inflammatory markers, such as C-reactive protein and some proinflammatory cytokines (tumor necrosis factor-α and interleukin-6) in blood as well as prostaglandin E2 metabolites in urine. CONCLUSIONS Plasma UA levels correlate to oxidation and inflammation biomarkers in opposite directions in women.
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Affiliation(s)
- Sheng Hui Wu
- a Department of Medicine, Division of Epidemiology , Vanderbilt University Medical Center , Nashville , TN , USA
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Sima IA, Sârbu C. Evaluation of polyphenolic fingerprints and antioxidant profiles of wild fruits. Int J Food Sci Technol 2016. [DOI: 10.1111/ijfs.13111] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ioana Anamaria Sima
- Department of Chemistry; Faculty of Chemistry and Chemical Engineering; Babeş-Bolyai University; Arany Janos Str., No 11 RO-400028 Cluj-Napoca România
| | - Costel Sârbu
- Department of Chemistry; Faculty of Chemistry and Chemical Engineering; Babeş-Bolyai University; Arany Janos Str., No 11 RO-400028 Cluj-Napoca România
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Antioxidant activities of novel galloyl phytosterols evaluated by human erythrocytes with the aid of confocal microscopy imaging. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.01.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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29
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Grau M, Bölck B, Bizjak DA, Stabenow CJA, Bloch W. The red-vine-leaf extract AS195 increases nitric oxide synthase-dependent nitric oxide generation and decreases oxidative stress in endothelial and red blood cells. Pharmacol Res Perspect 2016; 4:e00213. [PMID: 26977302 PMCID: PMC4777269 DOI: 10.1002/prp2.213] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 12/24/2015] [Indexed: 12/29/2022] Open
Abstract
The red‐vine‐leaf extract AS195 improves cutaneous oxygen supply and the microcirculation in patients suffering from chronic venous insufficiency. Regulation of blood flow was associated to nitric oxide synthase (NOS)‐dependent NO (nitric oxide) production, and endothelial and red blood cells (RBC) have been shown to possess respective NOS isoforms. It was hypothesized that AS195 positively affects NOS activation in human umbilical vein endothelial cells (HUVECs) and RBC. Because patients with microvascular disorders show increased oxidative stress which limits NO bioavailability, it was further hypothesized that AS195 increases NO bioavailability by decreasing the content of reactive oxygen species (ROS) and increasing antioxidant capacity. Cultured HUVECs and RBCs from healthy volunteers were incubated with AS195 (100 μmol/L), tert‐butylhydroperoxide (TBHP, 1 mmol/L) to induce oxidative stress and with both AS195 and TBHP. Endothelial and red blood cell–nitric oxide synthase (RBC‐NOS) activation significantly increased after AS195 incubation. Nitrite concentration, a marker for NO production, increased in HUVEC but decreased in RBC after AS195 application possibly due to nitrite scavenging potential of flavonoids. S‐nitrosylation of RBC cytoskeletal spectrins and RBC deformability were increased after AS195 incubation. TBHP‐induced ROS were decreased by AS195, and antioxidative capacity was significantly increased in AS195‐treated cells. TBHP also reduced RBC deformability, but reduction was attenuated by parallel incubation with AS195. Adhesion of HUVEC was also reduced after AS195 treatment. Red‐vine‐leaf extract AS195 increases NOS activation and decreases oxidative stress. Both mechanisms increase NO bioavailability, improve cell function, and may thus account for enhanced microcirculation in both health and disease.
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Affiliation(s)
- Marijke Grau
- Departments Molecular and Cellular Sports Medicine German Sport University Cologne Institute of Cardiovascular Research and Sports Medicine Am Sportpark Müngersdorf 6 Cologne Germany
| | - Birgit Bölck
- Departments Molecular and Cellular Sports Medicine German Sport University Cologne Institute of Cardiovascular Research and Sports Medicine Am Sportpark Müngersdorf 6 Cologne Germany
| | - Daniel Alexander Bizjak
- Departments Molecular and Cellular Sports Medicine German Sport University Cologne Institute of Cardiovascular Research and Sports Medicine Am Sportpark Müngersdorf 6 Cologne Germany
| | - Christina Julia Annika Stabenow
- Departments Molecular and Cellular Sports Medicine German Sport University Cologne Institute of Cardiovascular Research and Sports Medicine Am Sportpark Müngersdorf 6 Cologne Germany
| | - Wilhelm Bloch
- Departments Molecular and Cellular Sports Medicine German Sport University Cologne Institute of Cardiovascular Research and Sports Medicine Am Sportpark Müngersdorf 6 Cologne Germany
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Lemos VS, Aires RD, Ladeira M, Guatimosim S. Fullerene-Derivatives as Therapeutic Agents in Respiratory System and Neurodegenerative Disorders. BIOENGINEERING APPLICATIONS OF CARBON NANOSTRUCTURES 2016. [DOI: 10.1007/978-3-319-25907-9_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Islam MS, Karim MR, Boadi W, Falekun S, Mirza AH. Biological Evaluation of New Schiff Bases: Synthesized from 4-Amino-3,5-dimethyl-1,2,4-triazole, Phenathroline and Bipyridine Dicarboxaldehydes. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/abc.2016.66016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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The Medical Treatment of New-Onset Peripartum Cardiomyopathy: A Systematic Review of Prospective Studies. Can J Cardiol 2015; 31:1421-6. [DOI: 10.1016/j.cjca.2015.04.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 04/08/2015] [Accepted: 04/28/2015] [Indexed: 11/23/2022] Open
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T3 and T4 decrease ROS levels and increase endothelial nitric oxide synthase expression in the myocardium of infarcted rats. Mol Cell Biochem 2015; 408:235-43. [DOI: 10.1007/s11010-015-2501-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 07/04/2015] [Indexed: 11/26/2022]
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Ramos-Enríquez MA, Medina-Campos ON, Pedraza-Chaverri J, Iglesias-Arteaga MA. Synthesis and radical scavenger properties of novel spirochromenes derived from steroid sapogenins. Steroids 2015; 98:132-7. [PMID: 25824324 DOI: 10.1016/j.steroids.2015.03.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/10/2015] [Accepted: 03/20/2015] [Indexed: 11/23/2022]
Abstract
Tandem aldol condensation between steroid sapogenins and hydroxylated benzaldehydes afforded steroidal spirochromenes. Compounds that bear a phenolic hydroxyl group at position C-6', obtained by a reaction with 2,5-dihydroxybenzaldehyde, showed approximately 80% of maximal radical scavenging activity in the 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) assay at 288 nM. In contrast, the starting steroid sapogenins and the spirochromenes without a phenolic group in the side chain proved to be inactive.
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Affiliation(s)
- Manuel A Ramos-Enríquez
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico
| | - Omar N Medina-Campos
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico
| | - José Pedraza-Chaverri
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico
| | - Martín A Iglesias-Arteaga
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico.
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Zucker IH, Schultz HD, Patel KP, Wang H. Modulation of angiotensin II signaling following exercise training in heart failure. Am J Physiol Heart Circ Physiol 2015; 308:H781-91. [PMID: 25681422 PMCID: PMC4398865 DOI: 10.1152/ajpheart.00026.2015] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 02/04/2015] [Indexed: 02/07/2023]
Abstract
Sympathetic activation is a consistent finding in the chronic heart failure (CHF) state. Current therapy for CHF targets the renin-angiotensin II (ANG II) and adrenergic systems. Angiotensin converting enzyme (ACE) inhibitors and ANG II receptor blockers are standard treatments along with β-adrenergic blockade. However, the mortality and morbidity of this disease is still extremely high, even with good medical management. Exercise training (ExT) is currently being used in many centers as an adjunctive therapy for CHF. Clinical studies have shown that ExT is a safe, effective, and inexpensive way to improve quality of life, work capacity, and longevity in patients with CHF. This review discusses the potential neural interactions between ANG II and sympatho-excitation in CHF and the modulation of this interaction by ExT. We briefly review the current understanding of the modulation of the angiotensin type 1 receptor in sympatho-excitatory areas of the brain and in the periphery (i.e., in the carotid body and skeletal muscle). We discuss possible cellular mechanisms by which ExT may impact the sympatho-excitatory process by reducing oxidative stress, increasing nitric oxide. and reducing ANG II. We also discuss the potential role of ACE2 and Ang 1-7 in the sympathetic response to ExT. Fruitful areas of further investigation are the role and mechanisms by which pre-sympathetic neuronal metabolic activity in response to individual bouts of exercise regulate redox mechanisms and discharge at rest in CHF and other sympatho-excitatory states.
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Affiliation(s)
- Irving H Zucker
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Harold D Schultz
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Kaushik P Patel
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Hanjun Wang
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, Nebraska
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3D Printed Unibody Lab-on-a-Chip: Features Survey and Check-Valves Integration. MICROMACHINES 2015. [DOI: 10.3390/mi6040437] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ghosh P, Bhattacharjee A, Basu A, Singha Roy S, Bhattacharya S. Attenuation of cyclophosphamide-induced pulmonary toxicity in Swiss albino mice by naphthalimide-based organoselenium compound 2-(5-selenocyanatopentyl)-benzo[de]isoquinoline 1,3-dione. PHARMACEUTICAL BIOLOGY 2015; 53:524-532. [PMID: 25471377 DOI: 10.3109/13880209.2014.931440] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
CONTEXT The widely used antineoplastic drug cyclophosphamide causes pulmonary toxicity by inducing oxidative stress. Selenium, a dietary micronutrient, has been found to protect various organs from oxidative injuries. OBJECTIVE This study was designed to investigate the protective efficacy of an organoselenium compound 2-(5-selenocyanato-pentyl)-benzo[de]isoquinoline 1,3-dione against cyclophosphamide-induced pulmonary toxicity in Swiss albino mice. MATERIALS AND METHODS Cyclophosphamide (25 mg/kg b.w.) was administered intraperitoneally for 10 d and the organoselenium compound (3 mg/kg b.w.) was given by oral gavage in concomitant and pretreatment schedules. Various biochemical parameters related to oxidative stress and antioxidant enzymes along with histology of lungs were evaluated to assess the effect of the test compound. RESULTS The oral LD50 of the test compound was more than 1000 mg/kg b.w. in Swiss albino mice. The test compound substantially ameliorated cyclophosphamide-induced pulmonary injury by reducing the levels of reactive oxygen species, reactive nitrogen species, and lipid peroxidation, respectively, by 14.88, 18.54, and 21.10% in concomitant treatment schedule and by 23.89, 35.73, and 30.76% in the pretreatment schedule as well as by restoring the level of reduced glutathione and activities of glutathione-S-transferase, superoxide dismutase, catalase, and glutathione peroxidase, respectively, by 36.88, 42.43, 38.0, 35.0, and 34.06% in the concomitant treatment schedule and by 66.02, 59.29, 57.23, 71.59, and 57.22% in the pretreatment schedule. The test compound also attenuated cyclophosphamide-induced histological alterations of lung tissue. DISCUSSION AND CONCLUSION The test compound emerged as an efficient antioxidant protecting lungs tissue from cyclophosphamide-induced injury.
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Affiliation(s)
- Prosenjit Ghosh
- Department of Cancer Chemoprevention, Chittaranjan National Cancer Institute , Kolkata, West Bengal , India
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Cardioprotective effect of propofol against oxygen glucose deprivation and reperfusion injury in H9c2 cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:184938. [PMID: 25821553 PMCID: PMC4364303 DOI: 10.1155/2015/184938] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 02/18/2015] [Accepted: 02/25/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND The intravenous anesthetic propofol is reported to be a cardioprotective agent against ischemic-reperfusion injury in the heart. However, the regulatory mechanism still remains unclear. METHODS In this study, we used H9c2 cell line under condition of oxygen glucose deprivation (OGD) followed by reperfusion (OGD/R) to induce in vitro cardiomyocytes ischemia-reperfusion injury. Propofol (5, 10, and 20 μM) was added to the cell cultures before and during the OGD/R phases to investigate the underlying mechanism. RESULTS Our data showed that OGD/R decreased cell viability, and increased lactate dehydrogenase leakage, and reactive oxygen species and malondialdehyde production in H9c2 cells, all of which were significantly reversed by propofol. Moreover, we found that propofol increased both the activities and protein expressions of superoxide dismutase and catalase. In addition, propofol increased FoxO1 expression in a dose-dependent manner and inhibited p-AMPK formation significantly. CONCLUSIONS These results indicate that the propofol might exert its antioxidative effect through FoxO1 in H9c2 cells, and it has a potential therapeutic effect on cardiac disorders involved in oxidative stress.
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Ahmed S, Gul S, Gul H, Zia-Ul-Haq M, Ercisli S. Cyclooxygenase-2 inhibition improves antioxidative defense during experimental hypercholesterolemia. Bosn J Basic Med Sci 2015; 14:63-9. [PMID: 24856376 DOI: 10.17305/bjbms.2014.2264] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Scientific literature shows that inflammation and oxidative stress contribute in the pathogenesis of atherosclerosis. The oxidative stress is the consequence of an imbalance between the free radical generation and elimination. One source of free oxygen radicals is cyclooxygenase (COX)-2 and, therefore, inhibiting the activity of this enzyme is likely to reduce oxidative stress. In the present study an experimental rabbit model of hypercholesterolemia was developed and the effects of COX-2 inhibitors, nimesulide and celecoxib were observed on the activities of antioxidant enzymes, superoxide dismutase (SOD), glutathione peroxidase (GPx) and total antioxidant status (TAS). Rabbits were divided into four groups- control, saline, nimesulide and celecoxib, with all groups fed a high cholesterol diet, which only received saline. Low activities of SOD, GPx and TAS were measured in the hypercholesterolemic rabbits pretreated with saline. In the same group, a reciprocal relationship was observed between the LDL-cholesterol concentration and the plasma activities of GPx, SOD and TAS. Rabbits in nimesulide and celecoxib group showed significantly higher activities of SOD, GPx and TAS in hypercholesterolemic rabbits compared to saline group (p<0.05). Our study shows that selective and timely use of COX-2 inhibitors would be useful in preventing the onset and development of atherosclerosis by enhancing antioxidant defence system.
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Affiliation(s)
- Sagheer Ahmed
- PAPRSB Institute of Health Sciences, University Brunei Darussalam, Jalan Tungku Link Gadong BE 1410, Bander Seri Begawan, Brunei Darussalam. Department of Pharmacy, Kohat University of Science & Technology, Indus Highway, Kohat-26000, Kohat, Pakistan
| | - Saima Gul
- PAPRSB Institute of Health Sciences, University Brunei Darussalam, Jalan Tungku Link Gadong BE 1410, Bander Seri Begawan, Brunei Darussalam
| | - Humera Gul
- Department of Botany, Abdul Wali Khan University, Nowshera Mardan Road, Mardan- 23200, Pakistan
| | - Muhammad Zia-Ul-Haq
- The Patent Office, 2nd Floor, Kandawala Building, MA Jinnah Road, Karachi-74400, Pakistan
| | - Sezai Ercisli
- Agricultural Faculty, Ataturk University, Kumeevler 60. Blok 25240 Erzurum, Turkey
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Liang R, Zhang JP, Skibsted LH. Evaluation of physical integrity of lipid bilayer under oxidative stress: application of fluorescence microscopy and digital image processing. Methods Mol Biol 2015; 1208:111-121. [PMID: 25323503 DOI: 10.1007/978-1-4939-1441-8_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Membrane damage as a result of oxidative stress is quantified using digital image heterogeneity analysis of single giant unilamellar vesicles (GUVs) composed of soy phosphatidylcholine (PC), which were found to undergo budding when containing chlorophyll a (Chla) as photosensitizer in the lipid bilayer. Based on digital image heterogeneity analysis, a dimensionless scalar parameter "entropy" for the budding process was found to change linearly during an initial budding stage. Photo-induced peroxidation of PC to form linoleoyl hydroperoxides, further leading to domains of higher polarities in GUVs, was suggested to initiate the budding process. The effect on budding process of GUVs was suggested for use in assays for evaluation of potential protectors of lipid bilayer integrity under oxidative stress, and "entropy" seemed to be a valid descriptor of such membranal integrity. The one-step procedure for quantification of prooxidative effects and antioxidative protection provided by drug candidates and potential food ingredients in membranes could be easily automated for direct measurement of oxidative and antioxidative effects on cellular integrity.
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Affiliation(s)
- Ran Liang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
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41
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From chronic cerebral hypoperfusion to Alzheimer-like brain pathology and neurodegeneration. Cell Mol Neurobiol 2014; 35:101-10. [PMID: 25352419 DOI: 10.1007/s10571-014-0127-9] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 10/19/2014] [Indexed: 01/09/2023]
Abstract
Chronic cerebral hypoperfusion (CCH) is a common consequence of various cerebral vascular disorders and hemodynamic and blood changes. Recent studies have revealed an important role of CCH in neurodegeneration and dementia, including vascular dementia and Alzheimer's disease (AD). This article reviews the recent advances in understanding CCH-induced neurodegeneration and AD-related brain pathology and cognitive impairment. We discuss the causes and assessment of CCH, the possible mechanisms by which CCH promotes Alzheimer-like pathology and neurodegeneration, and animal models of CCH. It appears that CCH promotes neurodegeneration and AD through multiple mechanisms, including induction of oxidative stress, Aβ accumulation and aggravation, tau hyperphosphorylation, synaptic dysfunction, neuronal loss, white matter lesion, and neuroinflammation. Better understanding of the mechanisms of CCH will help develop therapeutic strategies for preventing and treating neurodegeneration, including sporadic AD and vascular dementia, caused by CCH.
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Oxidative stress markers and C-reactive protein are related to severity of heart failure in patients with dilated cardiomyopathy. Mediators Inflamm 2014; 2014:147040. [PMID: 25400332 PMCID: PMC4226178 DOI: 10.1155/2014/147040] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 09/28/2014] [Accepted: 09/29/2014] [Indexed: 11/17/2022] Open
Abstract
Background. The aim of study was to determine relationships between functional capacity (NYHA class), left ventricle ejection fraction (LVEF), hemodynamic parameters, and biomarkers of redox state and inflammation in patients with dilated cardiomyopathy (DCM). Methods. DCM patients (n = 109, aged 45.97 ± 10.82 years), NYHA class IIV, and LVEF 2.94 ± 7.1% were studied. Controls comprised age-matched healthy volunteers (n = 28). Echocardiography and right heart catheterization were performed. Serum activities of superoxide dismutase isoenzymes (MnSOD and CuZnSOD), concentrations of uric acid (UA), malondialdehyde (MDA), and C-reactive protein (hs-CRP) were measured. Results. MnSOD, UA, hs-CRP, and MDA were significantly higher in DCM patients compared to controls. Except MDA concentration, above parameters were higher in patients in III-IV NYHA class or with lower LVEF. hsCRP correlated with of MnSOD (P < 0.05) and CuZnSOD activity (P < 0.01). Both isoenzymes positively correlated with mPAP and pulmonary capillary wedge pressure (MnSOD, resp., P < 0.01 and P < 0.05 and CuZnSOD P < 0.05; P < 0.05). UA positively correlated with MnSOD (P < 0.05), mPAP (P < 0.05), and PVRI (P < 0.05). The negative correlation between LVEF and UA (P < 0.01) was detected. Conclusion. There are relationships among the severity of symptoms of heart failure, echocardiographic hemodynamic parameters, oxidative stress, and inflammatory activation. Increased MnSOD activity indicates the mitochondrial source of ROS in patients with advanced heart failure.
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Comina G, Suska A, Filippini D. Low cost lab-on-a-chip prototyping with a consumer grade 3D printer. LAB ON A CHIP 2014; 14:2978-82. [PMID: 24931176 DOI: 10.1039/c4lc00394b] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Versatile prototyping of 3D printed lab-on-a-chip devices, supporting different forms of sample delivery, transport, functionalization and readout, is demonstrated with a consumer grade printer, which centralizes all critical fabrication tasks. Devices cost 0.57US$ and are demonstrated in chemical sensing and micromixing examples, which exploit established principles from reference technologies.
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Affiliation(s)
- Germán Comina
- Optical Devices Laboratory - Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping 58183, Sweden.
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Wang HJ, Liang R, Fu LM, Han RM, Zhang JP, Skibsted LH. Nutritional aspects of β-carotene and resveratrol antioxidant synergism in giant unilamellar vesicles. Food Funct 2014; 5:1573-8. [PMID: 24867711 DOI: 10.1039/c4fo00225c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Giant unilamellar vesicles of soy phosphatidylcholine are found to undergo budding when sensitized with chlorophyll a ([phosphatidylcholine] : [chlorophyll a] = 1500 : 1) under light irradiation (400-440 nm, 16 mW mm(-2)). 'Entropy' as a dimensionless image heterogeneity measurement is found to increase linearly with time during an initial budding process. For β-carotene addition ([phosphatidylcholine] : [β-carotene] = 500 : 1), a lag phase of 23 s is observed, followed by a budding process at an initial rate lowered by a factor of 3.8, whereas resveratrol ([phosphatidylcholine] : [resveratrol] = 500 : 1) has little if any protective effect against budding. However, resveratrol, when combined with β-carotene, is found to further reduce the initial budding rate by a total factor of 4.7, exhibiting synergistic antioxidation effects. It is also interesting that β-carotene alone determines the lag phase for the initiation of budding, while resveratrol supports β-carotene in reducing the rate of the budding process following the lag phase; however, it alone has no observable effect on the lag phase. Resveratrol is suggested to regenerate β-carotene following its sacrificial protection of unsaturated lipids from oxidative stress, modeling the synergistic effects in cell membranes by combinations of dietary antioxidants.
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Affiliation(s)
- Hui-Jing Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
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Kurokawa S, Niwano S, Niwano H, Murakami M, Ishikawa S, Masaki Y, Tamaki H, Toda T, Noda Y, Shimizu T, Izumi T, Ako J. Cardiomyocyte-derived mitochondrial superoxide causes myocardial electrical remodeling by downregulating potassium channels and related molecules. Circ J 2014; 78:1950-9. [PMID: 24859499 DOI: 10.1253/circj.cj-13-1587] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND This study was designed to investigate the role of a primary hyperoxidative stress in myocardial electrical remodeling using heterozygous heart/muscle-specific manganese superoxide dismutase-deficient (H/M-Sod2(+/-)) mice treated with L-buthionine-sulfoximine (BSO). METHODS AND RESULTS Both H/M-Sod2(+/-)and wild-type (WT) mice were treated with intra-peritoneal BSO or saline for 7 days, and divided into 4 groups: H/M-Sod2(+/-)+BSO, WT+BSO, H/M-Sod2(+/-)control, and WT control. The ventricular effective refractory period (ERP) and the monophasic action potential duration (MAPD) were determined. Levels of oxidative stress, potassium channel-related molecules, and K(+)channel-interacting protein-2 (KChIP2) were also evaluated. The H/M-Sod2(+/-)+BSO group exhibited markedly prolonged MAPD20, MAPD90 and ERP in comparison with the other groups (MAPD20: 14 ± 1 vs. 11 ± 1 ms, MAPD90: 77 ± 7 vs. 58 ± 4 ms, ERP: 61 ± 6 vs. 41 ± 3 ms, H/M-Sod2(+/-)+BSO vs. WT control; P<0.05). Mitochondrial superoxide and hydrogen peroxide formation in the myocardium increased in the H/M-Sod2(+/-)+BSO group in comparison with the WT+BSO group (P<0.05). Real-time RT-PCR and Western blotting revealed that Kv4.2 expression was downregulated in both BSO-treated groups, whereas KChIP2 expression was downregulated only in the H/M-Sod2(+/-)+BSO group (P<0.05). CONCLUSIONS BSO treatment caused hyperoxidative stress in the myocardium of H/M-Sod2(+/-)mice. Changes in the expression and function of potassium channels were considered to be involved in the mechanism of electrical remodeling in this model.
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Affiliation(s)
- Sayaka Kurokawa
- Department of Cardiovascular Medicine, Kitasato University School of Medicine
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Karamichos D, Hutcheon AEK, Rich CB, Trinkaus-Randall V, Asara JM, Zieske JD. In vitro model suggests oxidative stress involved in keratoconus disease. Sci Rep 2014; 4:4608. [PMID: 24714342 PMCID: PMC3980225 DOI: 10.1038/srep04608] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 03/20/2014] [Indexed: 11/09/2022] Open
Abstract
Keratoconus (KC) affects 1:2000 people and is a disorder where cornea thins and assumes a conical shape. Advanced KC requires surgery to maintain vision. The role of oxidative stress in KC remains unclear. We aimed to identify oxidative stress levels between human corneal keratocytes (HCKs), fibroblasts (HCFs) and keratoconus cells (HKCs). Cells were cultured in 2D and 3D systems. Vitamin C (VitC) and TGF-β3 (T3) were used for 4 weeks to stimulate self-assembled extracellular matrix (ECM). No T3 used as controls. Samples were analyzed using qRT-PCR and metabolomics. qRT-PCR data showed low levels of collagen I and V, as well as keratocan for HKCs, indicating differentiation to a myofibroblast phenotype. Collagen type III, a marker for fibrosis, was up regulated in HKCs. We robustly detected more than 150 metabolites of the targeted 250 by LC-MS/MS per condition and among those metabolites several were related to oxidative stress. Lactate levels, lactate/malate and lactate/pyruvate ratios were elevated in HKCs, while arginine and glutathione/oxidized glutathione ratio were reduced. Similar patterns found in both 2D and 3D. Our data shows that fibroblasts exhibit enhanced oxidative stress compared to keratocytes. Furthermore the HKC cells exhibit the greatest level suggesting they may have a myofibroblast phenotype.
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Affiliation(s)
- D Karamichos
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, USA
| | - A E K Hutcheon
- Schepens Eye Research Institute/Massachusetts Eye and Ear and the Department of Ophthalmology Harvard Medical School, Boston, MA, USA
| | - C B Rich
- Departments of Biochemistry and Ophthalmology, Boston University School of Medicine, 80 E Concord Street, Boston, MA 02118, USA
| | - V Trinkaus-Randall
- Departments of Biochemistry and Ophthalmology, Boston University School of Medicine, 80 E Concord Street, Boston, MA 02118, USA
| | - J M Asara
- Division of Signal Transduction/Mass Spectrometry Core, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - J D Zieske
- Schepens Eye Research Institute/Massachusetts Eye and Ear and the Department of Ophthalmology Harvard Medical School, Boston, MA, USA
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Shimamoto N. [A pathophysiological role of cytochrome p450 involved in production of reactive oxygen species]. YAKUGAKU ZASSHI 2014; 133:435-50. [PMID: 23546588 DOI: 10.1248/yakushi.12-00263] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Dysregulation of the production of reactive oxygen species (ROS) determines cellular function. Cytochrome P450s (CYPs) regulates ROS production and contributes to the process of cell death. This review summarizes our recent findings, focusing on the involvement of CYPs in pathophysiology induced by ROS. 1. Quinone toxicity in hepatocytes: CYPs require electrons supplied from NADPH-cytochrome P450 reductase (NPR) during the process of metabolism. NPR also provides electrons to quinone compounds, which compete with CYPs over electrons. Inhibition of CYPs shifts NPR's electron flow more to quinones, which accelerates the redox cycle to enhance ROS production and quinone toxicity. 2. Myocardial ischemia-reperfusion injury: Reperfusion of blood flow after coronary artery occlusion induces cell damage, as evident by the extension of myocardial infarct size and caspase-independent cell apoptosis. CYP2C6 appears to be a source for ROS production, since sulfaphenazole, a selective inhibitor of CYP2C6, reduces this damage. ROS produced by CYP2C6 during the reperfusion causes translational activation of Noxa and BimEL, as well as the suppression of caspase activation, resulting in caspase-independent apoptosis. 3. Primary hepatocyte apoptosis: Inhibition of catalase and glutathione peroxidase increases intracellular ROS and elicits caspase-independent hepatocyte apoptosis. SKF-525A, a pan-CYP inhibitor, suppresses these ROS increases and hepatocyte apoptosis. Increased ROS activates ERK and AP-1 by inhibition of tyrosine phosphatase, and inhibits BimEL degradation by proteasome. These results in the accumulation of mitochondrial BimEL, which then induces the release of cytochrome c and endonuclease G (EndoG). Increased ROS also keeps caspases inactivated. As a result, EndoG executes nucleosomal DNA fragmentation.
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Affiliation(s)
- Norio Shimamoto
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences at Kagawa, Tokushima Bunri University, Kagawa 769-2193, Japan
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Wei W, Ying X, Zhang W, Chen Y, Leng A, Jiang C, Liu J. Effects of vitexin-2"-O-rhamnoside and vitexin-4"-O-glucoside on growth and oxidative stress-induced cell apoptosis of human adipose-derived stem cells. J Pharm Pharmacol 2014; 66:988-97. [PMID: 24533889 DOI: 10.1111/jphp.12225] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Accepted: 01/01/2014] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Vitexin-2"-O-rhamnoside (VOR) and vitexin-4"-O-glucoside (VOG) are the two main flavonoid glycosides of the leaves of Cratagus pinnatifida Bge. var. major N. E. Br. that has been widely used for the treatment of cardiovascular system diseases. In this study, we simultaneously investigated the influence of VOR and VOG on human adipose-derived stem cells (hADSCs) injury induced by hydrogen peroxide (H2 O2 ) to further characterize their anti-oxidative and anti-apoptotic activity. METHODS hADSCs were isolated, cultured in vitro and pretreated with 62.5 μm VOR or 120 μm VOG for 24 h and then exposed to 500 μm H2 O2 for an additional 4 h. KEY FINDINGS Pretreatment of hADSCs with VOR and VOG was demonstrated to significantly ameliorate the toxicity and apoptosis effects, such as morphological distortion, nuclear condensation, decreased intracellular caspase-3 activity and percentage of cells in apoptosis/necrosis by using morphological assay, immunocytochemistry and flow cytometric evaluation. In addition, VOR and VOG caused no cytotoxic effect on hADSCs at concentrations up to 250 and 480 μm, respectively. CONCLUSIONS Our results indicated that both VOR and VOG contribute to the protection against H2 O2 -mediated oxidative stress damage and could be safely used for a wide range of concentrations.
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Affiliation(s)
- Wenjuan Wei
- Regenerative Medicine Center, The First Affiliated Hospital of Dalian Medical University, Dalian, China; Institute of Integrative Medicine, Dalian Medical University, Dalian, China
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Mazzola PN, Karikas GA, Schulpis KH, Dutra-Filho CS. Antioxidant treatment strategies for hyperphenylalaninemia. Metab Brain Dis 2013; 28:541-50. [PMID: 23657560 DOI: 10.1007/s11011-013-9414-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2013] [Accepted: 05/01/2013] [Indexed: 12/12/2022]
Abstract
Hyperphenylalaninemia (HPA) leads to increased oxidative stress in patients with phenylketonuria (PKU) and in animal models of PKU. Early diagnosis and immediate adherence to a phenylalanine-restricted diet prevents HPA and, consequently, severe brain damage. However, treated adolescent and adult PKU patients have difficulties complying with the diet, leading to an oscillation of phenylalanine levels and associated oxidative stress. The brain is especially susceptible to reactive species, and oxidative stress might add to the impaired cognitive function found in these patients. The restricted PKU diet has a very limited nutrient content from natural foods and almost no animal protein, which reduces the intake of important compounds. These specific compounds can act as scavengers of reactive species and can be co-factors of antioxidant enzymes. Supplementation with nutrients, vitamins, and tetrahydropterin has given quite promising results in patients and animal models. Antioxidant supplementation has been studied in HPA, however there is no consensus about its always beneficial effects. In this way, regular exercise could be a beneficial addition on antioxidant status in PKU patients. A deeper understanding of PKU molecular biochemistry, and genetics, as well as the need for improved targeted treatment options, could lead to the development of new therapeutic strategies.
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Affiliation(s)
- Priscila Nicolao Mazzola
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica. Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2600 - Anexo, CEP 90035-003, Porto Alegre, RS, Brazil,
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Cytotoxicity evaluation and antioxidant enzyme expression related to heavy metals found in tuna by-products meal: An in vitro study in human and rat liver cell lines. ACTA ACUST UNITED AC 2013; 65:1025-33. [DOI: 10.1016/j.etp.2013.03.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 02/18/2013] [Accepted: 03/07/2013] [Indexed: 11/19/2022]
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