1
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Herb M. NADPH Oxidase 3: Beyond the Inner Ear. Antioxidants (Basel) 2024; 13:219. [PMID: 38397817 PMCID: PMC10886416 DOI: 10.3390/antiox13020219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 02/02/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Reactive oxygen species (ROS) were formerly known as mere byproducts of metabolism with damaging effects on cellular structures. The discovery and description of NADPH oxidases (Nox) as a whole enzyme family that only produce this harmful group of molecules was surprising. After intensive research, seven Nox isoforms were discovered, described and extensively studied. Among them, the NADPH oxidase 3 is the perhaps most underrated Nox isoform, since it was firstly discovered in the inner ear. This stigma of Nox3 as "being only expressed in the inner ear" was also used by me several times. Therefore, the question arose whether this sentence is still valid or even usable. To this end, this review solely focuses on Nox3 and summarizes its discovery, the structural components, the activating and regulating factors, the expression in cells, tissues and organs, as well as the beneficial and detrimental effects of Nox3-mediated ROS production on body functions. Furthermore, the involvement of Nox3-derived ROS in diseases progression and, accordingly, as a potential target for disease treatment, will be discussed.
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Affiliation(s)
- Marc Herb
- Institute for Medical Microbiology, Immunology and Hygiene, Faculty of Medicine, University Hospital Cologne, University of Cologne, 50935 Cologne, Germany;
- German Centre for Infection Research, Partner Site Bonn-Cologne, 50931 Cologne, Germany
- Cologne Cluster of Excellence on Cellular Stress Responses in Aging-Associated Diseases (CECAD), 50931 Cologne, Germany
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2
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Lopez-Sanchez MA, Del Carmen Garcia-Rodriguez M, Aguayo-Ortiz R, Hernandez-Cruz E, Figueroa-Figueroa DI, Hernandez-Luis F. Synthesis of Quinazolin-2,4,6-triamine Derivatives as Non-purine Xanthine Oxidase Inhibitors and Exploration of Their Toxicological Potential. ChemMedChem 2023; 18:e202300184. [PMID: 37642254 DOI: 10.1002/cmdc.202300184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 08/02/2023] [Indexed: 08/31/2023]
Abstract
In this work, a new set of quinazolin-2,4,6-triamine derivatives were synthesized to explore their potential biological activity as xanthine oxidase (XO) inhibitors, superoxide scavengers and screening of their toxicological profile. Among all the synthesized compounds, B1 exhibited better inhibitory activity against bovine xanthine oxidase (bXO) than allopurinol (IC50 =1.56 μM and IC50 =6.99 μM, respectively). As superoxide scavengers, B1, B2 and B13 exhibited a better effect than allopurinol (97.3 %, 82.1 %, 87.4 % and 69.4 %, respectively). Regarding the toxicological profile, B1 was less cytotoxic than methotrexate on HCT-15 cancer cells. Apoptosis results obtained in cells of female and male mice, showed that B1 and B2 presented a similar behaviour to CrO3 (positive control) with respect to the average frequency to induce apoptosis; while B13 apoptosis induced effect was similar to DMSO and control group. Finally, B1, B2, B13 did not induce genotoxicity in a micronuclei murine model compared to CrO3 .
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Affiliation(s)
- Marcela A Lopez-Sanchez
- Departamento de Farmacia, Facultad de Química, UNAM, Universidad 3000, 04510, Ciudad de México, México
| | - María Del Carmen Garcia-Rodriguez
- Laboratorio de Antimutagénesis, Anticarcinogénesis y Antiteratogénesis Ambiental, Facultad de Estudios Superiores-Zaragoza, UNAM, Av Guelatao 66, 09230, Ciudad de México, México
| | - Rodrigo Aguayo-Ortiz
- Departamento de Farmacia, Facultad de Química, UNAM, Universidad 3000, 04510, Ciudad de México, México
| | - Estefani Hernandez-Cruz
- Laboratorio de Antimutagénesis, Anticarcinogénesis y Antiteratogénesis Ambiental, Facultad de Estudios Superiores-Zaragoza, UNAM, Av Guelatao 66, 09230, Ciudad de México, México
| | - Diego I Figueroa-Figueroa
- Departamento de Farmacia, Facultad de Química, UNAM, Universidad 3000, 04510, Ciudad de México, México
| | - Francisco Hernandez-Luis
- Departamento de Farmacia, Facultad de Química, UNAM, Universidad 3000, 04510, Ciudad de México, México
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3
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Narayanan S J J, Tripathi D, Verma P, Adhikary A, Dutta AK. Secondary Electron Attachment-Induced Radiation Damage to Genetic Materials. ACS OMEGA 2023; 8:10669-10689. [PMID: 37008102 PMCID: PMC10061531 DOI: 10.1021/acsomega.2c06776] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 02/20/2023] [Indexed: 06/19/2023]
Abstract
Reactions of radiation-produced secondary electrons (SEs) with biomacromolecules (e.g., DNA) are considered one of the primary causes of radiation-induced cell death. In this Review, we summarize the latest developments in the modeling of SE attachment-induced radiation damage. The initial attachment of electrons to genetic materials has traditionally been attributed to the temporary bound or resonance states. Recent studies have, however, indicated an alternative possibility with two steps. First, the dipole-bound states act as a doorway for electron capture. Subsequently, the electron gets transferred to the valence-bound state, in which the electron is localized on the nucleobase. The transfer from the dipole-bound to valence-bound state happens through a mixing of electronic and nuclear degrees of freedom. In the presence of aqueous media, the water-bound states act as the doorway state, which is similar to that of the presolvated electron. Electron transfer from the initial doorway state to the nucleobase-bound state in the presence of bulk aqueous media happens on an ultrafast time scale, and it can account for the decrease in DNA strand breaks in aqueous environments. Analyses of the theoretically obtained results along with experimental data have also been discussed.
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Affiliation(s)
- Jishnu Narayanan S J
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400076, India
| | - Divya Tripathi
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400076, India
| | - Pooja Verma
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400076, India
| | - Amitava Adhikary
- Department
of Chemistry, Oakland University, 146 Library Drive, Rochester, Michigan 48309, United States
| | - Achintya Kumar Dutta
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400076, India
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4
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Cojocaru KA, Luchian I, Goriuc A, Antoci LM, Ciobanu CG, Popescu R, Vlad CE, Blaj M, Foia LG. Mitochondrial Dysfunction, Oxidative Stress, and Therapeutic Strategies in Diabetes, Obesity, and Cardiovascular Disease. Antioxidants (Basel) 2023; 12:antiox12030658. [PMID: 36978905 PMCID: PMC10045078 DOI: 10.3390/antiox12030658] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/28/2023] [Accepted: 03/04/2023] [Indexed: 03/09/2023] Open
Abstract
Mitochondria are subcellular organelles involved in essential cellular functions, including cytosolic calcium regulation, cell apoptosis, and reactive oxygen species production. They are the site of important biochemical pathways, including the tricarboxylic acid cycle, parts of the ureagenesis cycle, or haem synthesis. Mitochondria are responsible for the majority of cellular ATP production through OXPHOS. Mitochondrial dysfunction has been associated with metabolic pathologies such as diabetes, obesity, hypertension, neurodegenerative diseases, cellular aging, and cancer. In this article, we describe the pathophysiological changes in, and mitochondrial role of, metabolic disorders (diabetes, obesity, and cardiovascular disease) and their correlation with oxidative stress. We highlight the genetic changes identified at the mtDNA level. Additionally, we selected several representative biomarkers involved in oxidative stress and summarize the progress of therapeutic strategies.
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Affiliation(s)
- Karina-Alexandra Cojocaru
- Department of Biochemistry, Faculty of Dental Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universității Street, 700115 Iasi, Romania
| | - Ionut Luchian
- Department of Periodontology, Faculty of Dental Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universității Street, 700115 Iași, Romania
| | - Ancuta Goriuc
- Department of Biochemistry, Faculty of Dental Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universității Street, 700115 Iasi, Romania
- Correspondence: (A.G.); (C.-E.V.)
| | - Lucian-Mihai Antoci
- Department of Medical Genetics, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universității Street, 700115 Iasi, Romania
| | - Cristian-Gabriel Ciobanu
- Department of Medical Genetics, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universității Street, 700115 Iasi, Romania
| | - Roxana Popescu
- Department of Medical Genetics, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universității Street, 700115 Iasi, Romania
- Department of Medical Genetics, “Saint Mary” Emergency Children’s Hospital, Vasile Lupu Street, No. 62, 700309 Iasi, Romania
| | - Cristiana-Elena Vlad
- Department of Internal Medicine, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universității Street, 700115 Iasi, Romania
- Department of Nephrology-Internal Medicine, “Dr. C. I. Parhon” Clinical Hospital, 700503 Iasi, Romania
- Correspondence: (A.G.); (C.-E.V.)
| | - Mihaela Blaj
- Anaesthesia and Intensive Care Department, Grigore T. Popa University of Medicine and Pharmacy, 700115 Iasi, Romania
- Anaesthesia and Intensive Care Department, Sf. Spiridon University Hospital, 700111 Iasi, Romania
| | - Liliana Georgeta Foia
- Department of Biochemistry, Faculty of Dental Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universității Street, 700115 Iasi, Romania
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5
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de Miranda EGF, Cornetta LM, Varella MTDN. Low-Energy Electron Interactions with Resveratrol and Resorcinol: Anion States and Likely Dissociation Pathways. J Phys Chem A 2022; 126:7667-7674. [PMID: 36251590 DOI: 10.1021/acs.jpca.2c05789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a computational study of the anion states of the resveratrol (RV) and resorcinol (RS) molecules, also investigating dissociative electron attachment (DEA) pathways. RV has well-known beneficial effects in human health, and its antioxidant activity was previously associated with DEA reactions producing H2. Our calculations indicate a valence bound state (π1*) and four resonances (π2* to π5*) for that system. While the computed thermodynamic thresholds are compatible with DEA reactions producing H2 at 0 eV, the well-known mechanism involving vibrational Feshbach resonances built on a dipole bound state should not be present in RV. Our results suggest that the shallow π1* valence bound state is expected to account for H2 elimination, probably involving π1*/σOH* couplings along the vibration dynamics. The RS molecule is also an oxidant and a subunit of RV. Because two close-lying hydroxyl groups are found in the RS moiety, the H2-elimination reaction in RV should take place at the RS site. Our calculations point out a correspondence between the anion states of RV and RS and even between the thresholds. Nevertheless, the absence of bound anion states in RS, indicated by our calculations, is expected to suppress the H2-formation channel at 0 eV. One is led to conclude that the ethene and phenol subunits in RV stabilize the π1* state, thus switching on the DEA mechanism producing H2.
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Affiliation(s)
- Ely G F de Miranda
- Instituto de Física, Universidade de São Paulo, Rua do Matão 1371, 05508-090São Paulo, São Paulo, Brazil
| | - Lucas M Cornetta
- Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Rua Sérgio Buarque de Holanda, 777 Cidade Universitária, 13083-859Campinas, São Paulo, Brazil
| | - Márcio T do N Varella
- Instituto de Física, Universidade de São Paulo, Rua do Matão 1371, 05508-090São Paulo, São Paulo, Brazil
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6
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Jiang T, Guo H, Xia YN, Liu Y, Chen D, Pang G, Feng Y, Yu H, Wu Y, Zhang S, Wang Y, Wang Y, Wen H, Zhang LW. Hepatotoxicity of copper sulfide nanoparticles towards hepatocyte spheroids using a novel multi-concave agarose chip method. Nanomedicine (Lond) 2021; 16:1487-1504. [PMID: 34184559 DOI: 10.2217/nnm-2021-0011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Aim: To explore the hepatotoxicity of copper sulfide nanoparticles (CuSNPs) toward hepatocyte spheroids. Materials & methods: Other than the traditional agarose method to generate hepatocyte spheroids, we developed a multi-concave agarose chip (MCAC) method to investigate changes in hepatocyte viability, morphology, mitochondrial membrane potential, reactive oxygen species and hepatobiliary transporter by CuSNPs. Results: The MCAC method allowed a large number of spheroids to be obtained per sample. CuSNPs showed hepatotoxicity in vitro through a decrease in spheroid viability, albumin/urea production and glycogen deposition. CuSNPs also introduced hepatocyte spheroid injury through alteration of mitochondrial membrane potential and reactive oxygen species, that could be reversed by N-acetyl-l-cysteine. CuSNPs significantly decreased the activity of BSEP transporter by downregulating its mRNA and protein levels. Activity of the MRP2 transporter remained unchanged. Conclusion: We observed the hepatotoxicity of CuSNPs in vitro with associated mechanisms in an advanced 3D culture system.
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Affiliation(s)
- Tianyan Jiang
- School of Radiation Medicine & Protection, State Key Laboratory of Radiation Medicine & Protection, School for Radiological & Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, PR China
| | - Haoxiang Guo
- School of Radiation Medicine & Protection, State Key Laboratory of Radiation Medicine & Protection, School for Radiological & Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, PR China
| | - Ya-Nan Xia
- School of Radiation Medicine & Protection, State Key Laboratory of Radiation Medicine & Protection, School for Radiological & Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, PR China
| | - Yun Liu
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, PR China.,Shanghai R&D Centre for Standardization of Chinese Medicines, Shanghai, 201210, PR China
| | - Dandan Chen
- School of Radiation Medicine & Protection, State Key Laboratory of Radiation Medicine & Protection, School for Radiological & Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, PR China
| | - Guibin Pang
- State Key Laboratory of Bioreactor Engineering, East China University of Science & Technology, Shanghai, PR China
| | - Yahui Feng
- Department of Science & Technology, The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, 610051, PR China
| | - Huan Yu
- School of Radiation Medicine & Protection, State Key Laboratory of Radiation Medicine & Protection, School for Radiological & Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, PR China
| | - Yanxian Wu
- School of Radiation Medicine & Protection, State Key Laboratory of Radiation Medicine & Protection, School for Radiological & Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, PR China
| | - Shaodian Zhang
- The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, PR China
| | - Yangyun Wang
- School of Radiation Medicine & Protection, State Key Laboratory of Radiation Medicine & Protection, School for Radiological & Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, PR China
| | - Yong Wang
- School of Radiation Medicine & Protection, State Key Laboratory of Radiation Medicine & Protection, School for Radiological & Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, PR China
| | - Hairuo Wen
- Beijing Key Laboratory, National Center for Safety Evaluation of Drugs, National Institutes for Food & Drug Control, Beijing, 100176, PR China
| | - Leshuai W Zhang
- School of Radiation Medicine & Protection, State Key Laboratory of Radiation Medicine & Protection, School for Radiological & Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, PR China
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7
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Protective Effect of Pyrroloquinoline Quinone on TNF-α-induced Mitochondrial Injury in Chondrocytes. Curr Med Sci 2021; 41:100-107. [PMID: 33582913 DOI: 10.1007/s11596-020-2248-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 07/07/2020] [Indexed: 01/15/2023]
Abstract
Osteoarthritis (OA) is a degenerative disease characterized by matrix degradation and cell death leading to a gradual loss of articular cartilage integrity. As a bacterial synthesis of quinine, pyrroloquinoline quinone (PQQ) is a strong redox cofactor with a variety of biological benefits, including antioxidant, anti-inflammation-induced mitochondrial metabolism regulation. This study was designed to investigate the effect of PQQ on TNF-α-induced mitochondrial damage in chondrocytes. Chondrocytes isolated from C57BL/6 mice were exposed to TNF-α 50 ng/mL, TNF-α 50 ng/mL + PQQ 10 µmol/L for 24 h. Then, morphological study, functional study and mechanism study were taken. The results revealed TNF-α-induced chondrocyte mitochondrion damage could be reduced by application of PQQ, evidenced by elevated number of mitochondria, well-kept mtDNA integrity, preserved ATP level, reestablished mitochondrial membrane potential, and prevented mitochondrial function. The present work strongly suggests that the mitochondrion is an important target for OA chondrocyte damage induced by TNF-α and the PQQ protection from this damage ameliorates mitochondrial dysfunction induced by TNF-α. PQQ might be a potential chemical for OA intervention.
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8
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Abate G, Vezzoli M, Sandri M, Rungratanawanich W, Memo M, Uberti D. Mitochondria and cellular redox state on the route from ageing to Alzheimer's disease. Mech Ageing Dev 2020; 192:111385. [PMID: 33129798 DOI: 10.1016/j.mad.2020.111385] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/05/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023]
Abstract
Several theories have been postulated, trying to explain why and how living organisms age. Despite some controversies and still huge open questions, a growing body of evidence suggest alterations of mitochondrial functionality and redox-homeostasis occur during the ageing process. Oxidative damage and mitochondrial dysfunction do not represent the cause of ageing per se but they have to be analyzed within the complexity of those series of processes occurring during lifespan. The establishment of a crosstalk among them is a shared common feature of many chronic age-related diseases, including neurodegenerative disorders, for which ageing is a major risk factor. The challenge is to understand when and how the interplay between these two systems move towards from normal ageing process to a pathological phenotype. Here in this review, we discuss the crosstalk between mitochondria and cytosolic-ROS. Furthermore, through a visual data mining approach, we attempt to describe the dynamic interplay between mitochondria and cellular redox state on the route from ageing to an AD phenotype.
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Affiliation(s)
- G Abate
- Department of Molecular and Translational Medicine, University of Brescia, Italy.
| | - M Vezzoli
- Department of Molecular and Translational Medicine, University of Brescia, Italy
| | - M Sandri
- Big & Open Data Innovation Laboratory (BODaI-Lab), Department of Economics and Management, University of Brescia, Italy
| | - W Rungratanawanich
- Department of Molecular and Translational Medicine, University of Brescia, Italy
| | - M Memo
- Department of Molecular and Translational Medicine, University of Brescia, Italy
| | - D Uberti
- Department of Molecular and Translational Medicine, University of Brescia, Italy; Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
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9
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Cauble RN, Greene ES, Orlowski S, Walk C, Bedford M, Apple J, Kidd MT, Dridi S. Research Note: Dietary phytase reduces broiler woody breast severity via potential modulation of breast muscle fatty acid profiles. Poult Sci 2020; 99:4009-4015. [PMID: 32731988 PMCID: PMC7597982 DOI: 10.1016/j.psj.2020.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 05/17/2020] [Indexed: 12/11/2022] Open
Abstract
Woody breast (WB) myopathy is a major concern and economic burden to the poultry industry, and for which, there is no effective solution because of its unknown etiology. In a previous study, we have shown that phytase (Quantum Blue, QB) reduces the WB severity by 5% via modulation of oxygen homeostasis-related pathways. As WB has been suggested to be associated with lipid dysmetabolism, we aimed to determine the effect of QB on WB and breast muscle fatty acid profile. Male broilers were subjected to 6 treatments (96 birds/treatment): a nutrient adequate control group (PC), the PC supplemented with 0.3% myo-inositol (PC + MI), a negative control (NC) deficient in available P and Ca by 0.15 and 0.16%, respectively, the NC fed with QB at 500 (NC+500 FTU), and 1,000 (NC+ 1,000 FTU) or 2,000 FTU/kg of feed (NC+2,000 FTU). Woody breast and white striping scores were recorded, and fatty acid profiles were determined using gas liquid chromatography. Woody breast-affected muscles exhibited a significant higher incidence of white striping as liquid chromatography analysis reveals an imbalance of fatty acid profile in the breast of WB-affected birds with a significant higher percent of saturated fatty acids (SFA, myristic [14:0], pentadecanoic [15:0], and margaric [17:0]) and monounsaturated fatty acids (myristoleic [14:1], palmitoleic [16:1c], 10-trans-heptadecenoic [17:1t], oleic [18:1c9], and vaccenic [18:1c11]), and lower content of polyunsaturated fatty acids (PUFA) and omega-3 (P < 0.05). Quantum Blue at high doses (1,000 and 2,000 FTU) significantly reduces the percent of SFA and increases that of PUFA compared with the control group. In conclusion, WB myopathy seemed to be associated with an imbalance of fatty acid profile, and QB ameliorates the severity of WB potentially via modulation of SFA and PUFA contents.
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Affiliation(s)
- Reagan N Cauble
- Department of Animal Science, University of Arkansas, Fayetteville 72701.
| | - Elizabeth S Greene
- Center of Excellence for Poultry Science, Division of Agriculture, University of Arkansas, Fayetteville 72701
| | - Sara Orlowski
- Center of Excellence for Poultry Science, Division of Agriculture, University of Arkansas, Fayetteville 72701
| | - Carrie Walk
- AB Vista, Woodstock Ct, Marlborough, Wiltshire SN8 4AN, UK
| | - Mike Bedford
- AB Vista, Woodstock Ct, Marlborough, Wiltshire SN8 4AN, UK
| | - Jason Apple
- Department of Animal Science, University of Arkansas, Fayetteville 72701
| | - Michael T Kidd
- Center of Excellence for Poultry Science, Division of Agriculture, University of Arkansas, Fayetteville 72701
| | - Sami Dridi
- Center of Excellence for Poultry Science, Division of Agriculture, University of Arkansas, Fayetteville 72701.
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10
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de Souza Gonçalves B, de Moura Valadares JM, Alves SLG, Silva SC, Rangel LP, Cortes VF, Villar JAFP, Barbosa LA, de Lima Santos H. Evaluation of neuroprotective activity of digoxin and semisynthetic derivatives against partial chemical ischemia. J Cell Biochem 2019; 120:17108-17122. [PMID: 31310381 DOI: 10.1002/jcb.28971] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 03/29/2019] [Accepted: 04/08/2019] [Indexed: 02/06/2023]
Abstract
Recently, cardiotonic steroids (CTS) have been shown to lead to the activation of Na,K-ATPase at low concentrations in brain, promoting neuroprotection against ischemia. We report here the results of the use of digoxin and its semisynthetic derivatives BD-14, BD-15, and BD-16 against partial chemical ischemic induction followed by reperfusion in murine neuroblastoma cells neuro-2a (N2a). For chemical ischemic induction, sodium azide (5 mM) was used for 5 hours, and then reperfusion was induced for 24 hours. Na,K-ATPase activity and protein levels were analyzed in membrane preparation of N2a cells pretreated with the compounds (150 nM), in the controls and in induced chemical ischemia. In the Na,K-ATPase activity and protein levels assays, the steroids digoxin and BD-15 demonstrated a capacity to modulate the activity of the enzyme directly, increasing its levels of expression and activity. Oxidative parameters, such as superoxide dismutase (SOD) activity, lipid peroxidation (thiobarbituric acid reactive substance), glutathione peroxidase (GPx), glutathione (GSH) levels, hydrogen peroxide content, and the amount of free radicals (reactive oxygen species) during induced chemical ischemia were also evaluated. Regarding the redox state, lipid peroxidation, hydrogen peroxide content, and GPx activity, we have observed an increase in the chemical ischemic group, and a reduction in the groups treated with CTS. SOD activity increased in all treated groups when compared to control and GSH levels decreased when treated with sodium azide and did not change with CTS treatments. Regarding the lipid profile, we saw a decrease in the content of phospholipids and cholesterol in the chemical ischemic group, and an increase in the groups treated with CTS. In conclusion, the compounds used in this study demonstrate promising results, since they appear to promote neuroprotection in cells exposed to chemical ischemia.
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Affiliation(s)
- Bruno de Souza Gonçalves
- Laboratório de Bioquímica Celular, Universidade Federal de São João del Rei, Divinópolis, Minas Gerais, Brazil
| | | | - Silmara L G Alves
- Laboratório de Síntese Orgânica e Nanoestruturas, Universidade Federal de São João del Rei, Divinópolis, Minas Gerais, Brazil
| | - Simone C Silva
- Laboratório de Síntese Orgânica e Nanoestruturas, Universidade Federal de São João del Rei, Divinópolis, Minas Gerais, Brazil
| | - Luciana P Rangel
- Laboratório de Bioquímica Tumoral, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vanessa F Cortes
- Laboratório de Bioquímica Celular, Universidade Federal de São João del Rei, Divinópolis, Minas Gerais, Brazil
| | - José A F P Villar
- Laboratório de Síntese Orgânica e Nanoestruturas, Universidade Federal de São João del Rei, Divinópolis, Minas Gerais, Brazil
| | - Leandro A Barbosa
- Laboratório de Bioquímica Celular, Universidade Federal de São João del Rei, Divinópolis, Minas Gerais, Brazil
| | - Hérica de Lima Santos
- Laboratório de Bioquímica Celular, Universidade Federal de São João del Rei, Divinópolis, Minas Gerais, Brazil
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11
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Mbemya GT, de Sá NAR, Guerreiro DD, de Sousa FGC, Nguedia SN, Alves BG, Santos FW, Pessoa ODL, Comizzoli P, Figueiredo JR, Rodrigues APR. Early ovine preantral follicles have a potential to grow until antral stage in two-step culture system in the presence of aqueous extract of Justicia insularis. Reprod Domest Anim 2019; 54:1121-1130. [PMID: 31145489 DOI: 10.1111/rda.13477] [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: 03/19/2019] [Accepted: 05/25/2019] [Indexed: 11/30/2022]
Abstract
The objective of this study was to determine whether preantral follicles cultured in vitro for 7 days within ovine ovarian cortical strips could be isolated at the secondary follicles (SF) and grown until antral stage during an additional 6 days period of in vitro culture in the presence of aqueous extract of Justicia insularis. Fresh ovarian fragments from 16 adult sheep were fixed for histological analysis (Control 1) or in vitro cultured individually in α-MEM+ supplemented with 0.3 mg/ml J. insularis (Step 1) for 7 days. Part of the fragments then were fixed for histological analysis (in vitro culture group). Remaining fragments were exposed stepwise to increasing trehalose concentrations before immediate isolation of SF and viability assessment (Control 2) or after 6 days of culture in α-MEM++ supplemented with 0.3 mg/ml J. insularis (Step 2). In Step 1, percentage of follicular activation was 80%. In Step 2, a significant increase (p < 0.05) in follicular diameter and antrum formation within 6 days in vitro culture of isolated follicles was achieved. The total antioxidant capacity from both steps significantly increase (p < 0.05) from day 2 to day 6. Confocal analysis of oocytes showed 57.14% oocytes with homogeneous distribution and 42.86% with peri-cortical distribution. In conclusion, SF can be successfully isolated from sheep ovarian cortex after 7 days of culture and are capable of surviving and forming an antral cavity if cultured in vitro for an additional 6 days in the presence of 0.3 mg/ml J. insularis.
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Affiliation(s)
- Gildas Tetaping Mbemya
- Laboratory of Manipulation of Oocyte and Ovarian Preantral Follicles (LAMOFOPA), Faculty of Veterinary (FAVET), State University of Ceará, Fortaleza, Brazil
| | - Naiza Arcângela Ribeiro de Sá
- Laboratory of Manipulation of Oocyte and Ovarian Preantral Follicles (LAMOFOPA), Faculty of Veterinary (FAVET), State University of Ceará, Fortaleza, Brazil
| | - Denise Damasceno Guerreiro
- Laboratory of Manipulation of Oocyte and Ovarian Preantral Follicles (LAMOFOPA), Faculty of Veterinary (FAVET), State University of Ceará, Fortaleza, Brazil
| | - Francisca Geovania Canafístula de Sousa
- Laboratory of Manipulation of Oocyte and Ovarian Preantral Follicles (LAMOFOPA), Faculty of Veterinary (FAVET), State University of Ceará, Fortaleza, Brazil
| | - Sylvain Njina Nguedia
- Laboratory of Manipulation of Oocyte and Ovarian Preantral Follicles (LAMOFOPA), Faculty of Veterinary (FAVET), State University of Ceará, Fortaleza, Brazil
| | - Benner Geraldo Alves
- Laboratory of Biology of Reproduction, Federal University of Uberlândia, Uberlândia, Brazil
| | - Francielli Weber Santos
- Laboratory of Reproduction Biotechnology (Biotech), State of University of Pampa, Uruguaiana, Brazil
| | | | - Pierre Comizzoli
- Center for Species Survival, Smithsonian Conservation Biology Institute, Front Royal, Virginia, USA
| | - José Ricardo Figueiredo
- Laboratory of Manipulation of Oocyte and Ovarian Preantral Follicles (LAMOFOPA), Faculty of Veterinary (FAVET), State University of Ceará, Fortaleza, Brazil
| | - Ana Paula Ribeiro Rodrigues
- Laboratory of Manipulation of Oocyte and Ovarian Preantral Follicles (LAMOFOPA), Faculty of Veterinary (FAVET), State University of Ceará, Fortaleza, Brazil
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12
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Supplementation of in vitro culture medium with FSH to grow follicles and mature oocytes can be replaced by extracts of Justicia insularis. PLoS One 2018; 13:e0208760. [PMID: 30532263 PMCID: PMC6286020 DOI: 10.1371/journal.pone.0208760] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Accepted: 11/20/2018] [Indexed: 12/04/2022] Open
Abstract
The present study evaluated the effect of supplementing in vitro culture medium with J. insularis compared to FSH on isolated secondary follicles and in vitro maturation of oocytes from those follicles. Secondary follicles were isolated from sheep ovaries and individually cultured for 18 days in α-MEM+ (Control), α-MEM+ supplemented with 100 ng/mL recombinant bovine follicle stimulating hormone (FSH) or with 0.3, 1.25, or 2.5 mg/mL of J. insularis extract (JI0.3, JI1.25, and JI2.5, respectively). Culture medium collected every 2 days was used to measure ROS levels. At the end of the culture period, cumulus oocytes complex (COCs) were collected and matured in vitro. Follicular walls were used for mRNA quantitation. JI0.3 led to a higher (P < 0.05) percentages of intact follicles than other groups after 18 days of culture. While follicular diameter remained unchanged from Day 6 onwards with JI0.3 and FSH, percentages of antral cavity formation were higher (P < 0.05) with JI0.3 at Day 6 than in all other treatments. No differences were observed between controls and treatment groups regarding ROS levels and mRNA expression of genes. Viability of resulting oocytes was higher (P < 0.05) in JI0.3 compared to FSH. Interestingly, in control experiment, supplementation of maturation medium with JI0.3 led to higher (P < 0.05) percentages of metaphase II compared to controls. Although more validations will be needed, it seems that this natural extract could be used as a cheap and easily available alternative to commercial FSH.
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13
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Pereira LC, de Paula ES, Pazin M, Carneiro MFH, Grotto D, Barbosa F, Dorta DJ. Niacin prevents mitochondrial oxidative stress caused by sub-chronic exposure to methylmercury. Drug Chem Toxicol 2018; 43:64-70. [PMID: 30192646 DOI: 10.1080/01480545.2018.1497045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Humans and animals can be exposed to different chemical forms of mercury (Hg) in the environment. For example, methylmercury (MeHg)-contaminated fish is part of the basic diet of the riparian population in the Brazilian Amazon Basin, which leads to high total blood and plasma Hg levels in people living therein. Hg induces toxic effects mainly through oxidative stress. Different compounds have been used to prevent the damage caused by MeHg-induced reactive oxygen species (ROS). This study aims to investigate the in vivo effects of sub-chronic exposure to low MeHg levels on the mitochondrial oxidative status and to evaluate the niacin protective effect against MeHg-induced oxidative stress. For this purpose, Male Wistar rats were divided into four groups: control group, treated with drinking water on a daily basis; group exposed to MeHg at a dose of 100 µg/kg/day; group that received niacin at a dose of 50 mg/kg/day in drinking water, with drinking water being administered by gavage; group that received niacin at a dose of 50 mg/kg/day in drinking water as well as MeHg at a dose of 100 µg/kg/day. After 12 weeks, the rats, which weighed 500-550 g, were sacrificed, and their liver mitochondria were isolated by standard differential centrifugation. Sub-chronic exposure to MeHg (100 µg/kg/day for 12 weeks) led to mitochondrial swelling (p < 0.05) and induced ROS overproduction as determined by increased DFCH oxidation (p < 0.05), increased gluthatione oxidation (p < 0.05), and reduced protein thiol content (p < 0.05). In contrast, niacin supplementation inhibited oxidative stress, which counteracted and minimized the toxic MeHg effects on mitochondria.
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Affiliation(s)
- Lílian Cristina Pereira
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil.,Faculdade de Ciências Agronômicas, Departamento de Bioprocessos e Biotecnologia, Universidade Estadual Paulista, Botucatu, São Paulo, Brasil.,Departamento de Patologia, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, TOXICAM - Núcleo de Avaliação do Impacto Ambiental sobre a Saúde Humana, Botucatu, São Paulo, Brazil
| | - Eloisa Silva de Paula
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Murilo Pazin
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Maria Fernanda Hornos Carneiro
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Denise Grotto
- Laboratório de Pesquisa em Toxicologia, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade de Sorocaba, Sorocaba, São Paulo, Brasil
| | - Fernando Barbosa
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Daniel Junqueira Dorta
- Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Departamento de Química, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil.,Instituto Nacional de Tecnologias Alternativas de Detecção, Avaliação Toxicológica e Remoção de Micropututantes e Radioativos (INCT-DATREM), Unesp, Instituto de Química, Araraquara, São Paulo, Brasil
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14
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Macías-Cruz U, Vicente-Pérez R, López-Baca MA, González-Ríos H, Correa-Calderón A, Arechiga CF, Avendaño-Reyes L. Effects of dietary ferulic acid on reproductive function and metabolism of pre-pubertal hairbreed ewes during the anestrous season. Theriogenology 2018; 119:220-224. [PMID: 30053723 DOI: 10.1016/j.theriogenology.2018.07.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/13/2018] [Accepted: 07/14/2018] [Indexed: 11/19/2022]
Abstract
This study aimed to evaluate the effects of dietary supplementation of ferulic acid (FA) on reproductive tract weight (RTW), ovarian activity and serum concentrations of some metabolites and thyroid hormones of pre-pubertal hairbreed ewe lambs during the natural anestrous season. Twenty Dorper x Pelibuey crossbred ewe lambs (initial body weight = 28.5 ± 0.5 kg and age = 5.0 mo) were fed a basal diet and assigned to two treatments (n = 10) under randomized complete block design: FA supplementation to dosages of 0 (control) or 300 mg of FA/d animal-1. Females were treated with FA during 34 d and then slaughtered to evaluate RTW and ovary. Blood samples were collected at days 1 and 34 to determine serum concentrations of metabolites (i.e. glucose, cholesterol, triglycerides, urea and total protein) and thyroid hormones. Final weight, dry matter intake, and serum concentrations of metabolites (except glucose) and thyroid hormones were unaltered by FA. Compared to control, FA-fed ewe lambs had lower (P = 0.05) serum glucose level but higher (P ≤ 0.05) RTW, ovarian mass, number of larger follicles and corpus luteum (CL). While percentage of ewe lambs with small follicles and number of small follicles per female did not vary, percentage of ewe lambs with large follicles and CL increased (P = 0.02) with FA. In conclusion, FA supplementation improves the reproductive tract development and ovarian activity of pre-pubertal hairbreed ewe lambs during the natural anestrous season. An improvement in functionality of the glucose-insulin system could be related with this benefic effect of FA.
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Affiliation(s)
- U Macías-Cruz
- Universidad Autónoma de Baja California, Instituto de Ciencias Agrícolas, Valle de Mexicali, B.C., 21705, Mexico
| | - R Vicente-Pérez
- Universidad Autónoma de Baja California, Instituto de Ciencias Agrícolas, Valle de Mexicali, B.C., 21705, Mexico; Universidad de Guadalajara, Centro Universitario de la Costa Sur, Autlán de Navarro, Jalisco, 48900, Mexico
| | - M A López-Baca
- Centro de Investigación en Alimentación y Desarrollo, A.C., Hermosillo, Sonora, 83000, Mexico
| | - H González-Ríos
- Centro de Investigación en Alimentación y Desarrollo, A.C., Hermosillo, Sonora, 83000, Mexico
| | - A Correa-Calderón
- Universidad Autónoma de Baja California, Instituto de Ciencias Agrícolas, Valle de Mexicali, B.C., 21705, Mexico
| | - C F Arechiga
- Universidad Autónoma de Zacatecas, Unidad Académica de Medicina Veterinaria y Zootecnia, Carretera Panamerica Zacateca-Fresnillo km 31.5, Zacatecas, 98500, Mexico
| | - L Avendaño-Reyes
- Universidad Autónoma de Baja California, Instituto de Ciencias Agrícolas, Valle de Mexicali, B.C., 21705, Mexico.
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15
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Possenti CGR, Horn RC, Mori NC, Ribas Junior V, Golle DP, Koefender J. AVALIAÇÃO DE ESTRESSE OXIDATIVO NO PLASMA DE BOVINOS LEITEIROS COM MASTITE. CIÊNCIA ANIMAL BRASILEIRA 2018. [DOI: 10.1590/1809-6891v19e-39754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Resumo A mastite bovina está associada a uma resposta antibacteriana endógena mediada pela produção de espécies reativas. Contudo, o excesso de reações oxidativas pode desencadear apoptose celular agravando o quadro clínico dos animais. Neste contexto, o objetivo deste estudo foi avaliar a resposta redox no plasma de vacas leiteiras com e sem mastite submetidas ou não ao tratamento com antibioticoterapia. As vacas foram divididas em Grupo Controle (G1), vacas sem mastite; grupo G2, vacas com mastite sem tratamento com antimicrobianos; grupo G3, vacas com mastite tratadas com antibiótico. As amostras sanguíneas foram coletadas após a primeira ordenha da manhã. Foram analisados a existência de lipoperoxidação (LPO) e os níveis de proteínas carboniladas (PCs), de glutationa reduzida (GSH), de ácido ascórbico (ASA) e de ácido úrico (AU). Os animais do G3 apresentaram aumento na LPO e das PCs. Em todos os grupos, os níveis de GSH permaneceram inalterados. Os valores plasmáticos de ASA e de AU mostraram-se diminuídos nos animais dos grupos G2 e G3. Os resultados demonstraram que o tratamento com antimicrobianos parece agravar os danos oxidativos presentes na mastite bovina, reforçando a importância da busca por alternativas terapêuticas a fim de minimizar esse efeito.
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16
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Pshenichnyuk SA, Modelli A, Komolov AS. Interconnections between dissociative electron attachment and electron-driven biological processes. INT REV PHYS CHEM 2018. [DOI: 10.1080/0144235x.2018.1461347] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Stanislav A. Pshenichnyuk
- Institute of Molecule and Crystal Physics – Subdivision of the Ufa Research Centre of the Russian Academy of Sciences, Ufa, Russia
| | - Alberto Modelli
- Dipartimento di Chimica ‘G. Ciamician’, Università di Bologna, Bologna, Italy
- Centro Interdipartimentale di Ricerca in Scienze Ambientali, Ravenna, Italy
| | - Alexei S. Komolov
- Department of Solid State Electronics, St. Petersburg State University, St. Petersburg, Russia
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17
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Huang CH, Kuo CL, Huang CS, Liu CS, Chang CC. Depleted Leukocyte Mitochondrial DNA Copy Number Correlates With Unfavorable Left Ventricular Volumetric and Spherical Shape Remodeling in Acute Myocardial Infarction After Primary Angioplasty. Circ J 2017. [PMID: 28626147 DOI: 10.1253/circj.cj-17-0088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Left ventricular (LV) shape influences LV systolic function. It is possible to assess LV shape using 3-D echocardiography sphericity index (SI). Maintaining mitochondrial DNA copy number (MCN) is important for preserving mitochondrial function and LV systolic function after acute myocardial infarction (AMI). Information is limited, however, regarding the relationship between leukocyte MCN and the subsequent change in LV shape after AMI.Methods and Results:Fifty-five AMI patients undergoing primary angioplasty were recruited. Plasma MCN was measured before primary angioplasty using quantitative polymerase chain reaction. 3-D echocardiography measurement of SI was performed at baseline, and at 1-, 3-, and 6-month follow-up. AMI subjects with MCN lower than the median had a higher 6-month SI and LV volume compared with those with higher MCN. Baseline echocardiographic parameters were similar between the 2 groups. MCN was negatively correlated with 3- and 6-month SI, and 3- and 6-month LV volume. On multiple linear regression analysis, baseline plasma MCN could predict LV SI and LV volume at 6 months after primary angioplasty for AMI, even after adjusting for traditional prognostic factors. CONCLUSIONS In AMI patients, higher plasma leukocyte MCN at baseline was associated with favorable LV shape and remodeling at 6-month follow-up. Plasma leukocyte MCN may provide a novel prognostic biomarker for LV remodeling after AMI.
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Affiliation(s)
- Ching-Hui Huang
- Division of Cardiology, Department of Internal Medicine, Changhua Christian Hospital.,Institute of Statistics and Information Science, National Changhua University of Education.,School of Medicine, College of Medicine, Kaohsiung Medical University.,Department of Beauty Science and Graduate Institute of Beauty Science Technology, Chienkuo Technology University
| | - Chen-Ling Kuo
- Vascular and Genomic Center, Changhua Christian Hospital
| | | | - Chin-San Liu
- Vascular and Genomic Center, Changhua Christian Hospital.,Department of Neurology, Changhua Christian Hospital
| | - Chia-Chu Chang
- Department of Nephrology, Changhua Christian Hospital.,Medical Research Center, Department of Internal Medicine, Changhua Christian Hospital.,School of Medicine, Chung Shan Medical University
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18
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Stobiecka M, Jakiela S, Chalupa A, Bednarczyk P, Dworakowska B. Mitochondria–based biosensors with piezometric and RELS transduction for potassium uptake and release investigations. Biosens Bioelectron 2017; 88:114-121. [DOI: 10.1016/j.bios.2016.07.110] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 07/27/2016] [Accepted: 07/29/2016] [Indexed: 12/13/2022]
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19
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Cividini F, Scott BT, Dai A, Han W, Suarez J, Diaz-Juarez J, Diemer T, Casteel DE, Dillmann WH. O-GlcNAcylation of 8-Oxoguanine DNA Glycosylase (Ogg1) Impairs Oxidative Mitochondrial DNA Lesion Repair in Diabetic Hearts. J Biol Chem 2016; 291:26515-26528. [PMID: 27816939 DOI: 10.1074/jbc.m116.754481] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 11/03/2016] [Indexed: 11/06/2022] Open
Abstract
mtDNA damage in cardiac myocytes resulting from increased oxidative stress is emerging as an important factor in the pathogenesis of diabetic cardiomyopathy. A prevalent lesion that occurs in mtDNA damage is the formation of 8-hydroxy-2'-deoxyguanosine (8-OHdG), which can cause mutations when not repaired properly by 8-oxoguanine DNA glycosylase (Ogg1). Although the mtDNA repair machinery has been described in cardiac myocytes, the regulation of this repair has been incompletely investigated. Here we report that the hearts of type 1 diabetic mice, despite having increased Ogg1 protein levels, had significantly lower Ogg1 activity than the hearts of control, non-type 1 diabetic mice. In diabetic hearts, we further observed increased levels of 8-OHdG and an increased amount of mtDNA damage. Interestingly, Ogg1 was found to be highly O-GlcNAcylated in diabetic mice compared with controls. In vitro experiments demonstrated that O-GlcNAcylation inhibits Ogg1 activity, which could explain the mtDNA lesion accumulation observed in vivo Reducing Ogg1 O-GlcNAcylation in vivo by introducing a dominant negative O-GlcNAc transferase mutant (F460A) restored Ogg1 enzymatic activity and, consequently, reduced 8-OHdG and mtDNA damage despite the adverse hyperglycemic milieu. Taken together, our results implicate hyperglycemia-induced O-GlcNAcylation of Ogg1 in increased mtDNA damage and, therefore, provide a new plausible biochemical mechanism for diabetic cardiomyopathy.
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Affiliation(s)
- Federico Cividini
- From the Department of Medicine, University of California, San Diego, La Jolla, California 92093-0671 and
| | - Brian T Scott
- From the Department of Medicine, University of California, San Diego, La Jolla, California 92093-0671 and
| | - Anzhi Dai
- From the Department of Medicine, University of California, San Diego, La Jolla, California 92093-0671 and
| | - Wenlong Han
- From the Department of Medicine, University of California, San Diego, La Jolla, California 92093-0671 and
| | - Jorge Suarez
- From the Department of Medicine, University of California, San Diego, La Jolla, California 92093-0671 and
| | - Julieta Diaz-Juarez
- the Department of Pharmacology, Instituto Nacional de Cardiología, Juan Badiano 41, Barrio Belisario Domínguez Secc XVI, 14080 Tlalpan, DF, Mexico
| | - Tanja Diemer
- From the Department of Medicine, University of California, San Diego, La Jolla, California 92093-0671 and
| | - Darren E Casteel
- From the Department of Medicine, University of California, San Diego, La Jolla, California 92093-0671 and
| | - Wolfgang H Dillmann
- From the Department of Medicine, University of California, San Diego, La Jolla, California 92093-0671 and
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20
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Huang CH, Kuo CL, Huang CS, Tseng WM, Lian IB, Chang CC, Liu CS. High plasma coenzyme Q10 concentration is correlated with good left ventricular performance after primary angioplasty in patients with acute myocardial infarction. Medicine (Baltimore) 2016; 95:e4501. [PMID: 27495100 PMCID: PMC4979854 DOI: 10.1097/md.0000000000004501] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 06/20/2016] [Accepted: 07/13/2016] [Indexed: 01/11/2023] Open
Abstract
Exogenous administration of coenzyme Q10 (CoQ10) has been shown in experimental models to have a protective effect against ischemia-reperfusion injury. However, it is unclear whether follow-up plasma CoQ10 concentration is prognostic of left ventricular (LV) performance after primary balloon angioplasty in patients with acute ST segment elevation myocardial infarction (STEMI).We prospectively recruited 55 patients with STEMI who were treated with primary coronary balloon angioplasty. Plasma CoQ10 concentrations were measured before primary angioplasty (baseline) and 3 days, 7 days, and 1 month after STEMI using high-performance liquid chromatography. Echocardiography was performed at baseline and at 6-month follow-up. The control group comprised 54 healthy age- and sex-matched volunteers.Serial circulating CoQ10 concentrations significantly decreased with time in the STEMI group. The LV ejection fraction at 6-month follow-up positively correlated with the 1-month plasma CoQ10 tertile. Higher plasma CoQ10 concentrations at 1 month were associated with favorable LV remodeling and systolic function 6 months after STEMI. Multiple linear regression analysis showed that changes in CoQ10 concentrations at 1-month follow-up were predictive of LV systolic function 6 months after STEMI. Changes in CoQ10 concentrations correlated negatively with baseline oxidized low-density lipoprotein and fibrinogen concentrations and correlated positively with leukocyte mitochondrial copy number at baseline.Patients with STEMI who had higher plasma CoQ10 concentrations 1 month after primary angioplasty had better LV performance at 6-month follow-up. In addition, higher plasma CoQ10 concentration was associated with lower grade inflammatory and oxidative stress status. Therefore, plasma CoQ10 concentration may serve as a novel prognostic biomarker of LV systolic function after revascularization therapy for acute myocardial infarction.
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Affiliation(s)
- Ching-Hui Huang
- Division of Cardiology, Department of Internal Medicine, Changhua Christian Hospital
- Institute of Statistics and Information Science, National Changhua University of Education
| | | | | | | | - Ie Bin Lian
- Institute of Statistics and Information Science, National Changhua University of Education
| | - Chia-Chu Chang
- Division of Nephrology, Department of Internal Medicine, Changhua Christian Hospital, Changhua
- School of Medicine, Chung Shan Medical University, Taichung
| | - Chin-San Liu
- Vascular and Genomic Research Center
- Department of Neurology, Changhua Christian Hospital, Changhua
- Graduate Institute of Integrative Medicine, China Medical University, Taichung, Taiwan
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21
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Yue R, Xia X, Jiang J, Yang D, Han Y, Chen X, Cai Y, Li L, Wang WE, Zeng C. Mitochondrial DNA oxidative damage contributes to cardiomyocyte ischemia/reperfusion-injury in rats: cardioprotective role of lycopene. J Cell Physiol 2015; 230:2128-41. [PMID: 25656550 DOI: 10.1002/jcp.24941] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 01/23/2015] [Indexed: 11/09/2022]
Abstract
Mitochondrial (mt) dysfunction and oxidative stress are involved in the pathogenesis of ischemia/reperfusion (I/R)-injury. Lycopene, a lipophilic antioxidant found mainly in tomatoes and in other vegetables and fruits, can protect mtDNA against oxidative damage. However, the role of mtDNA in myocardial I/R-injury is unclear. In the present study, we aimed to determine if and how lycopene protects cardiomyocytes from I/R-injury. In both in vitro and in vivo studies, I/R-injury increased mt 8-hydroxyguanine (8-OHdG) content, decreased mtDNA content and mtDNA transcription levels, and caused mitochondrial dysfunction in cardiomyocytes. These effects of I/R injury on cardiomycoytes were blocked by pre-treatment with lycopene. MtDNA depletion alone was sufficient to induce cardiomyocyte death. I/R-injury decreased the protein level of a key activator of mt transcription, mitochondrial transcription factor A (Tfam), which was blocked by lycopene. The protective effect of lycopene on mtDNA was associated with a reduction in mitochondrial ROS production and stabilization of Tfam. In conclusion, lycopene protects cardiomyocytes from the oxidative damage of mtDNA induced by I/R-injury.
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Affiliation(s)
- Rongchuan Yue
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Institute of Cardiology, Chongqing, China
| | - Xuewei Xia
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Institute of Cardiology, Chongqing, China
| | - Jiahui Jiang
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Institute of Cardiology, Chongqing, China
| | - Dezhong Yang
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Institute of Cardiology, Chongqing, China
| | - Yu Han
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Institute of Cardiology, Chongqing, China
| | - Xiongwen Chen
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, China.,Cardiovascular Research Center & Department of Physiology, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Yue Cai
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Institute of Cardiology, Chongqing, China
| | - Liangpeng Li
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Institute of Cardiology, Chongqing, China
| | - Wei Eric Wang
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Institute of Cardiology, Chongqing, China
| | - Chunyu Zeng
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Institute of Cardiology, Chongqing, China
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22
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Oxidative stress and aging: a non-invasive EPR investigation in human volunteers. Aging Clin Exp Res 2015; 27:235-8. [PMID: 25080128 DOI: 10.1007/s40520-014-0265-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 07/23/2014] [Indexed: 10/25/2022]
Abstract
The oxidative stress theory of aging has brought to the implicit expectation that oxidative stress increases with aging. Unfortunately, a broad investigation in humans is missing due to limitations of conventional oxidative stress status (OSS) analyses. Here we show that the OSS measured in peripheral blood of 247 healthy volunteers, aged 2 days-104 years, using the electron paramagnetic resonance "EPR-radical probe" technique, negatively correlated with age (-1.1 %/year; p < 0.0001) both by simple and multiple linear regression analyses and that it was only marginally affected by sex. These findings stimulate further mechanistic studies.
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23
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Bliksøen M, Baysa A, Eide L, Bjørås M, Suganthan R, Vaage J, Stensløkken KO, Valen G. Mitochondrial DNA damage and repair during ischemia-reperfusion injury of the heart. J Mol Cell Cardiol 2014; 78:9-22. [PMID: 25446179 DOI: 10.1016/j.yjmcc.2014.11.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 11/10/2014] [Accepted: 11/11/2014] [Indexed: 11/28/2022]
Abstract
Ischemia-reperfusion (IR) injury of the heart generates reactive oxygen species that oxidize macromolecules including mitochondrial DNA (mtDNA). The 8-oxoguanine DNA glycosylase (OGG1) works synergistically with MutY DNA glycosylase (MYH) to maintain mtDNA integrity. Our objective was to study the functional outcome of lacking the repair enzymes OGG1 and MYH after myocardial IR and we hypothesized that OGG1 and MYH are important enzymes to preserve mtDNA and heart function after IR. Ex vivo global ischemia for 30min followed by 10min of reperfusion induced mtDNA damage that was removed within 60min of reperfusion in wild-type mice. After 60min of reperfusion the ogg1(-/-) mice demonstrated increased mtDNA copy number and decreased mtDNA damage removal suggesting that OGG1 is responsible for removal of IR-induced mtDNA damage and copy number regulation. mtDNA damage was not detected in the ogg1(-/-)/myh(-/-), inferring that adenine opposite 8-oxoguanine is an abundant mtDNA lesion upon IR. The level and integrity of mtDNA were restored in all genotypes after 35min of regional ischemia and six week reperfusion with no change in cardiac function. No consistent upregulation of other mitochondrial base excision repair enzymes in any of our knockout models was found. Thus repair of mtDNA oxidative base lesions may not be important for maintenance of cardiac function during IR injury in vivo. This article is part of a Special Issue entitled "Mitochondria: From Basic Mitochondrial Biology to Cardiovascular Disease."
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Affiliation(s)
- M Bliksøen
- Department of Physiology, Institute of Basic Medical Sciences, Norway; Center for Heart Failure Research, University of Oslo, Norway
| | - A Baysa
- Department of Physiology, Institute of Basic Medical Sciences, Norway; Center for Heart Failure Research, University of Oslo, Norway
| | - L Eide
- Department of Medical Biochemistry, University of Oslo, Norway
| | - M Bjørås
- Department of Microbiology, University of Oslo and Oslo University Hospital Rikshospitalet, Norway
| | - R Suganthan
- Department of Microbiology, University of Oslo and Oslo University Hospital Rikshospitalet, Norway
| | - J Vaage
- Department of Emergency Medicine and Intensive Care, University of Oslo and Oslo University Hospital, Ullevål, Oslo, Norway
| | - K O Stensløkken
- Department of Physiology, Institute of Basic Medical Sciences, Norway; Center for Heart Failure Research, University of Oslo, Norway.
| | - G Valen
- Department of Physiology, Institute of Basic Medical Sciences, Norway; Center for Heart Failure Research, University of Oslo, Norway
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24
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Pshenichnyuk SA, Modelli A. Can mitochondrial dysfunction be initiated by dissociative electron attachment to xenobiotics? Phys Chem Chem Phys 2013; 15:9125-35. [PMID: 23646356 DOI: 10.1039/c3cp50614b] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Resonance attachment of low-energy electrons to xenobiotic molecules, 2,4-dichlorophenoxyacetic acid (2,4-D), dichlorodiphenyltrichloroethane (DDT) and dichlorodiphenyldichloroethylene (DDE), was investigated under gas-phase conditions by means of complementary experimental techniques. Electron transmission spectroscopy (ETS) and dissociative electron attachment spectroscopy (DEAS), in the 0-6 eV and 0-15 eV energy range, respectively, were applied with the aim of modeling the behavior of these pesticide molecules under reductive conditions in vivo. Formation of long-lived parent molecular anions and fragment negative ions was observed at incident electron energies very close to zero, in agreement with the results of density functional theory calculations. The gas-phase DEA process, analogous to dissociative electron transfer in solution, was considered as a model for the initial step which occurs in the intermembrane space of mitochondria when a xenobiotic molecule captures an electron "leaked" from the respiratory chain. A possible involvement of the fragments produced by DEA to the pesticides under investigation into cellular processes is discussed. It is concluded that the free radicals and potential DNA adducts formed by DEA are expected to be dangerous for mitochondrial functionalities, while several of the products observed could act as messenger molecules, thus interfering with the normal cellular signaling pathways.
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Affiliation(s)
- Stanislav A Pshenichnyuk
- Institute of Molecule and Crystal Physics, Ufa Research Centre, Russian Academy of Sciences, Ufa, Russia.
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25
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Soltys DT, Rocha CRR, Lerner LK, de Souza TA, Munford V, Cabral F, Nardo T, Stefanini M, Sarasin A, Cabral‐Neto JB, Menck CFM. Novel
XPG
(
ERCC5
) Mutations Affect
DNA
Repair and Cell Survival after Ultraviolet but not Oxidative Stress. Hum Mutat 2013; 34:481-9. [DOI: 10.1002/humu.22259] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2012] [Accepted: 11/30/2012] [Indexed: 11/05/2022]
Affiliation(s)
- Daniela T. Soltys
- Department of Microbiology, Institute of Biomedical Sciences University of São Paulo São Paulo SP Brazil
| | - Clarissa R. R. Rocha
- Department of Microbiology, Institute of Biomedical Sciences University of São Paulo São Paulo SP Brazil
| | - Letícia K. Lerner
- Department of Microbiology, Institute of Biomedical Sciences University of São Paulo São Paulo SP Brazil
| | - Tiago A. de Souza
- Department of Microbiology, Institute of Biomedical Sciences University of São Paulo São Paulo SP Brazil
| | - Veridiana Munford
- Department of Microbiology, Institute of Biomedical Sciences University of São Paulo São Paulo SP Brazil
| | - Fernanda Cabral
- Instituto de Biofísica Carlos Chagas Filho Federal University of Rio de Janeiro Rio de Janeiro RJ Brazil
| | - Tiziana Nardo
- Istituto di Genetica Molecolare Consiglio Nazionale delle Ricerche Pavia Italy
| | - Miria Stefanini
- Istituto di Genetica Molecolare Consiglio Nazionale delle Ricerche Pavia Italy
| | - Alain Sarasin
- Centre National de la Recherche Scientifique UMR8200 Institut Gustave Roussy, University Paris‐Sud Villejuif France
| | - Januário B. Cabral‐Neto
- Instituto de Biofísica Carlos Chagas Filho Federal University of Rio de Janeiro Rio de Janeiro RJ Brazil
| | - Carlos F. M. Menck
- Department of Microbiology, Institute of Biomedical Sciences University of São Paulo São Paulo SP Brazil
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26
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Shin YS, Song SJ, Kang S, Hwang HS, Jung YS, Kim CH. Novel synthetic protective compound, KR-22335, against cisplatin-induced auditory cell death. J Appl Toxicol 2013; 34:191-204. [DOI: 10.1002/jat.2852] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 11/20/2012] [Accepted: 11/20/2012] [Indexed: 12/20/2022]
Affiliation(s)
- Yoo Seob Shin
- Department of Otolaryngology, School of Medicine; Ajou University; Suwon Korea
- Center for Cell Death Regulating Biodrug, School of Medicine; Ajou University; Suwon Korea
| | - Suk Jin Song
- Bio-organic Science Division; Korea Research Institute of Chemical Technology; Yuseong Daejeon Korea
| | - SungUn Kang
- Department of Otolaryngology, School of Medicine; Ajou University; Suwon Korea
- Center for Cell Death Regulating Biodrug, School of Medicine; Ajou University; Suwon Korea
| | - Hye Sook Hwang
- Department of Otolaryngology, School of Medicine; Ajou University; Suwon Korea
- Center for Cell Death Regulating Biodrug, School of Medicine; Ajou University; Suwon Korea
| | - Young-Sik Jung
- Bio-organic Science Division; Korea Research Institute of Chemical Technology; Yuseong Daejeon Korea
| | - Chul-Ho Kim
- Department of Otolaryngology, School of Medicine; Ajou University; Suwon Korea
- Center for Cell Death Regulating Biodrug, School of Medicine; Ajou University; Suwon Korea
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27
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Shin YS, Song SJ, Kang SU, Hwang HS, Choi JW, Lee BH, Jung YS, Kim CH. A novel synthetic compound, 3-amino-3-(4-fluoro-phenyl)-1H-quinoline-2,4-dione, inhibits cisplatin-induced hearing loss by the suppression of reactive oxygen species: in vitro and in vivo study. Neuroscience 2012; 232:1-12. [PMID: 23246618 DOI: 10.1016/j.neuroscience.2012.12.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Revised: 12/05/2012] [Accepted: 12/06/2012] [Indexed: 12/20/2022]
Abstract
Cisplatin, a chemotherapeutic agent for treating various solid tumors, produces hearing loss in approximately half a million cancer patients annually in the United States. In the course of developing a new protective agent against cisplatin-induced ototoxicity, we have been interested in a novel synthetic compound, 3-amino-3-(4-fluoro-phenyl)-1H-quinoline-2,4-dione (KR-22332). The effect of KR-22332 on cisplatin-induced cytotoxicity was analyzed in vitro in an organ of Corti-derived cell line (HEI-OC1), and in vivo in a zebrafish and rat model. Cisplatin-induced apoptosis, reactive oxygen species (ROS) generation and altered mitochondrial membrane potential (MMP) in HEI-OC1 cells were observed. KR-22332 significantly inhibited cisplatin-induced apoptosis, change of MMP, and intracellular ROS generation. KR-22332 markedly attenuated the cisplatin-induced loss and changes of auditory neuromasts in the zebrafish. Transtympanic administration of KR-22332 in a rat model was protective against cisplatin-induced hearing loss, as determined by click-evoked auditory brainstem response (p<0.01). Tissue terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling of rat cochlea demonstrated that KR-22332 blocked cisplatin-induced apoptosis. In addition, transtympanic administration of KR-22332 inhibited cisplatin-induced nicotinamide adenine dinucleotide phosphate-oxidase 3 (NOX3) overexpression in the rat cochlea. KR-22332 significantly reduced the expression of p-53, mitogen-activated protein kinases, caspase 3, and tumor necrosis factor-α compared to their significant increase after cisplatin treatment. The results of this study suggest that KR-22332 may prevent ototoxicity caused by the administration of cisplatin through the inhibition of mitochondrial dysfunction and the suppression of ROS generation. These novel findings implicate KR-22332 as a potential candidate for protective agent against cisplatin-induced ototoxicity.
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Affiliation(s)
- Y S Shin
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon, Republic of Korea; Center for Cell Death Regulating Biodrug, School of Medicine, Ajou University, Suwon, Republic of Korea
| | - S J Song
- Bio-organic Science Division, Korea Research Institute of Chemical Technology, Yuseong, Daejeon, Republic of Korea
| | - S U Kang
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon, Republic of Korea; Center for Cell Death Regulating Biodrug, School of Medicine, Ajou University, Suwon, Republic of Korea
| | - H S Hwang
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon, Republic of Korea; Center for Cell Death Regulating Biodrug, School of Medicine, Ajou University, Suwon, Republic of Korea
| | - J W Choi
- Department of Molecular Science & Technology, School of Medicine, Ajou University, Suwon, Republic of Korea
| | - B H Lee
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon, Republic of Korea; Center for Cell Death Regulating Biodrug, School of Medicine, Ajou University, Suwon, Republic of Korea
| | - Y-S Jung
- Bio-organic Science Division, Korea Research Institute of Chemical Technology, Yuseong, Daejeon, Republic of Korea
| | - C-H Kim
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon, Republic of Korea; Center for Cell Death Regulating Biodrug, School of Medicine, Ajou University, Suwon, Republic of Korea.
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28
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Salhan D, Husain M, Subrati A, Goyal R, Singh T, Rai P, Malhotra A, Singhal PC. HIV-induced kidney cell injury: role of ROS-induced downregulated vitamin D receptor. Am J Physiol Renal Physiol 2012; 303:F503-14. [PMID: 22647636 PMCID: PMC3774077 DOI: 10.1152/ajprenal.00170.2012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Accepted: 05/29/2012] [Indexed: 01/31/2023] Open
Abstract
Reactive oxygen species (ROS) have been demonstrated to contribute to HIV-induced tubular cell injury. We hypothesized that HIV-induced ROS generation may be causing tubular cell injury through downregulation of vitamin D receptor (VDR) and associated downstream effects. In the present study, HIV not only downregulated tubular cell VDR expression but also inflicted DNA injury. On the other hand, EB-1089, a VDR agonist (VD), inhibited both downregulation of VDR and tubular cell DNA injury in the HIV milieu. H(2)O(2) (an O(-) donor) directly downregulated tubular cell VDR, whereas catalase, a free radical scavenger, inhibited HIV-induced downregulation of tubular cell VDR expression. HIV also stimulated the tubular cell renin-angiotensin system (RAS) through downregulation of VDR. Because losartan (an ANG II blolcker) partially inhibited HIV-induced tubular cell ROS generation while ANG II directly stimulated tubular cell ROS generation, it appears that HIV-induced ROS production was partly contributed by the RAS activation. VD not only inhibited HIV-induced RAS activation but also attenuated tubular cell ROS generation. Tubular cells displayed double jeopardy in the HIV milieu induction of double-strand breaks and attenuated DNA repair; additionally, in the HIV milieu, tubular cells exhibited enhanced expression of phospho-p53 and associated downstream signaling. A VDR agonist and an ANG II blocker not only preserved expression of tubular cell DNA repair proteins but also inhibited induction of double-strand breaks. In in vivo studies, renal cortical sections of Tg26 mice displayed attenuated expression of VDR both in podocytes and tubular cells. In addition, renal cortical sections of Tg26 mice displayed enhanced oxidative stress-induced kidney cell DNA damage. These findings indicated that HIV-induced tubular cell downregulation of VDR contributed to the RAS activation and associated tubular cell DNA damage. However, both VD and RAS blockade provided protection against these effects of HIV.
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Affiliation(s)
- Divya Salhan
- Immunology Center, Feinstein Institute for Medical Research, Hofstra North Shore LIJ Medical School, Great Neck, New York, USA
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29
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Rosenfeldt F, Wilson M, Lee G, Kure C, Ou R, Braun L, de Haan J. Oxidative stress in surgery in an ageing population: pathophysiology and therapy. Exp Gerontol 2012; 48:45-54. [PMID: 22465624 DOI: 10.1016/j.exger.2012.03.010] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Revised: 03/08/2012] [Accepted: 03/14/2012] [Indexed: 01/22/2023]
Abstract
Reactive oxygen species (ROS) play an important role in the regulation of normal cellular function. When ROS are produced in excess they can have detrimental effects, a state known as oxidative stress. Thus ROS play both physiological and pathophysiological roles in the body. In clinical practice oxidative stress and its counterpart, antioxidant capacity can be measured and can guide remedial therapy. Oxidative stress can have a negative impact in all forms of major surgery including cardiac surgery, general surgery, trauma surgery, orthopedic surgery and plastic surgery; this is particularly marked in an ageing population. Many different therapies to reduce oxidative stress in surgery have been tried with variable results. We conclude that in surgical patients the assessment of oxidative stress, improvement of the understanding of its role, both positive and negative, and devising appropriate therapies represent fruitful fields for future research.
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Affiliation(s)
- Franklin Rosenfeldt
- Cardiac Surgical Research Unit, Department of Cardiothoracic Surgery, Alfred Hospital, Department of Surgery, Monash University, Melbourne, Australia.
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30
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Abstract
Evidence for the association of DNA damage with cardiovascular disease has been obtained from in vitro cell culture models, experimental cardiovascular disease and analysis of samples obtained from humans with disease. There is general acceptance that several factors associated with the risk of developing cardiovascular disease cause oxidative damage to DNA in cell culture models with both nuclear and mitochondrial DNA as targets. Moreover, evidence obtained over the past 10 years points to a possible mechanistic role for DNA damage in experimental atherosclerosis culminating in recent studies challenging the assumption that DNA damage is merely a biomarker of the disease process. This kind of mechanistic insight provides a renewed impetus for further studies in this area.
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Affiliation(s)
- Qudsia Malik
- Department of Cardiovascular Sciences, University of Leicester, Glenfield Hospital , Leicester , UK
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31
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Dröse S, Brandt U. Molecular mechanisms of superoxide production by the mitochondrial respiratory chain. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2012; 748:145-69. [PMID: 22729857 DOI: 10.1007/978-1-4614-3573-0_6] [Citation(s) in RCA: 349] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The mitochondrial respiratory chain is a major source of reactive oxygen species (ROS) in eukaryotic cells. Mitochondrial ROS production associated with a dysfunction of respiratory chain complexes has been implicated in a number of degenerative diseases and biological aging. Recent findings suggest that mitochondrial ROS can be integral components of cellular signal transduction as well. Within the respiratory chain, complexes I (NADH:ubiquinone oxidoreductase) and III (ubiquinol:cytochrome c oxidoreductase; cytochrome bc (1) complex) are generally considered as the main producers of superoxide anions that are released into the mitochondrial matrix and the intermembrane space, respectively. The primary function of both respiratory chain complexes is to employ energy supplied by redox reactions to drive the vectorial transfer of protons into the mitochondrial intermembrane space. This process involves a set of distinct electron carriers designed to minimize the unwanted leak of electrons from reduced cofactors onto molecular oxygen and hence ROS generation under normal circumstances. Nevertheless, it seems plausible that superoxide is derived from intermediates of the normal catalytic cycles of complexes I and III. Therefore, a detailed understanding of the molecular mechanisms driving these enzymes is required to understand mitochondrial ROS production during oxidative stress and redox signalling. This review summarizes recent findings on the chemistry and control of the reactions within respiratory complexes I and III that result in increased superoxide generation. Regulatory contributions of other components of the respiratory chain, especially complex II (succinate:ubiquinone oxidoreductase) and the redox state of the ubiquinone pool (Q-pool) will be briefly discussed.
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Affiliation(s)
- Stefan Dröse
- Center for Membrane Proteomics, Johann Wolfgang Goethe-Universität, Frankfurt am Main, Germany.
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32
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Mitochondria-ros crosstalk in the control of cell death and aging. JOURNAL OF SIGNAL TRANSDUCTION 2011; 2012:329635. [PMID: 22175013 PMCID: PMC3235816 DOI: 10.1155/2012/329635] [Citation(s) in RCA: 429] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Accepted: 08/25/2011] [Indexed: 02/07/2023]
Abstract
Reactive oxygen species (ROS) are highly reactive molecules, mainly generated inside mitochondria that can oxidize DNA, proteins, and lipids. At physiological levels, ROS function as “redox messengers” in intracellular signalling and regulation, whereas excess ROS induce cell death by promoting the intrinsic apoptotic pathway. Recent work has pointed to a further role of ROS in activation of autophagy and their importance in the regulation of aging. This review will focus on mitochondria as producers and targets of ROS and will summarize different proteins that modulate the redox state of the cell. Moreover, the involvement of ROS and mitochondria in different molecular pathways controlling lifespan will be reported, pointing out the role of ROS as a “balance of power,” directing the cell towards life or death.
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33
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Abstract
Structural changes and abnormal function of mitochondria have been documented in Down's syndrome (DS) cells, patients, and animal models. DS cells in culture exhibit a wide array of functional mitochondrial abnormalities including reduced mitochondrial membrane potential, reduced ATP production, and decreased oxido-reductase activity. New research has also brought to central stage the prominent role of oxidative stress in this condition. This review focuses on recent advances in the field with a particular emphasis on novel translational approaches involving the utilization of coenzyme Q(10) (CoQ(10) ) to treat a variety of clinical phenotypes associated with DS that are linked to increased oxidative stress and energy deficits. CoQ(10) has already provided promising results in several different conditions associated with altered energy metabolism and oxidative stress in the CNS. Two studies conducted in Ancona investigated the effect of CoQ(10) treatment on DNA damage in DS patients. Although the effect of CoQ(10) was evidenced only at single cell level, the treatment affected the distribution of cells according to their content in oxidized bases. In fact, it produced a strong negative correlation linking cellular CoQ(10) content and the amount of oxidized purines. Results suggest that the effect of CoQ(10) treatment in DS not only reflects antioxidant efficacy, but likely modulates DNA repair mechanisms.
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Affiliation(s)
- Luca Tiano
- Department of Biochemistry, Biology and Genetics, Polytechnic University of the Marche, Ancona, Italy.
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