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Yakoviichuk A, Krivova Z, Maltseva S, Kochubey A, Kulikovskiy M, Maltsev Y. Antioxidant Status and Biotechnological Potential of New Vischeria vischeri (Eustigmatophyceae) Soil Strains in Enrichment Cultures. Antioxidants (Basel) 2023; 12:654. [PMID: 36978902 PMCID: PMC10045218 DOI: 10.3390/antiox12030654] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/03/2023] [Accepted: 03/04/2023] [Indexed: 03/08/2023] Open
Abstract
The functional state of enrichment cultures of the Eustigmatophycean strains Vischeria vischeri MZ-E3 and MZ-E4 after 25-day cultivation in the BBM medium was studied. The concentrations of chlorophyll a, total carotenoids, protein, vitamins A and E, fatty acid peroxidation product content, an antioxidant enzyme, and succinate dehydrogenase activity were measured. MZ-E3 succinate dehydrogenase activity was significantly higher by 2.21 times; the MZ-E4 strain had 2.94 times higher glutathione peroxidase activity. The MZ-E3 antioxidant activity index and the MZ-E3 unsaturation of fatty acids were 1.3 and 1.25 times higher than the MZ-E4. The retinol and α-tocopherol content of the MZ-E3 was 28.6% and 38.76% higher than MZ-E4. The main fatty acid profile differences were the 3.46-fold and 3.92-fold higher stearic and eicosapentaenoic acid content in the MZ-E4 biomass. MZ-E3 had higher antioxidant, energy, and metabolic and photosynthetic status than MZ-E4. The antioxidant status of the studied strains showed the dependence of the adaptive mechanisms of each, associated with differences in the ecological conditions of the biotopes from which they were isolated. These strains are promising for producing α-tocopherol and biomass enriched with omega-3 and omega-6 fatty acids.
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Affiliation(s)
- Aleksandr Yakoviichuk
- Faculty of Natural Sciences, A. Makarenko Melitopol State University, Melitopol 72312, Russia
| | - Zinaida Krivova
- Laboratory of Molecular Systematics of Aquatic Plants, K.A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, Moscow 127276, Russia
| | - Svetlana Maltseva
- Laboratory of Molecular Systematics of Aquatic Plants, K.A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, Moscow 127276, Russia
| | - Angelica Kochubey
- Faculty of Natural Sciences, A. Makarenko Melitopol State University, Melitopol 72312, Russia
| | - Maxim Kulikovskiy
- Laboratory of Molecular Systematics of Aquatic Plants, K.A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, Moscow 127276, Russia
| | - Yevhen Maltsev
- Laboratory of Molecular Systematics of Aquatic Plants, K.A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, Moscow 127276, Russia
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Lee YJ, Lin YC, Liao CC, Chang YS, Huang YH, Tsai IJ, Chen JH, Lin SH, Lin YF, Hsieh TW, Chen YS, Wu CY, Chang CC, Lin CY. Using anti-malondialdehyde-modified peptide adduct autoantibodies in serum of taiwanese women to diagnose primary Sjogren's syndrome. Clin Biochem 2022; 108:27-41. [PMID: 35843269 DOI: 10.1016/j.clinbiochem.2022.07.002] [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: 03/04/2022] [Revised: 06/20/2022] [Accepted: 07/11/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND Sjogren's syndrome (SS) is a systemic autoimmune disease featured with a dry mouth and dry eyes. Several autoantibodies, including anti-SSA, anti-SSB, antinuclear antibodies can be detected in patients with SS. Oxidation-specific epitopes (OSEs) can be formed from malondialdehyde (MDA)-modified protein adducts and trigger chronic inflammation. In this study, our purposes were used serum levels of anti-MDA-modified peptide adducts autoantibodies to evaluate predictive performance by machine learning algorithms in primary Sjögren's syndrome (pSS) and assess the association between pSS and healthy controls. METHODS Three novel MDA-modified peptide adducts, including immunoglobulin (Ig) gamma heavy chain 1 (IGHG1)102-131, complement factor H (CFAH)1045-1062, and Ig heavy constant alpha 1 (IGHA1)307-327 were identified and validated. Serum levels of protein, MDA-modified protein adducts, MDA, and autoantibodies recognizing unmodified peptides and MDA-modified peptide adducts were measured. Statistically significance in correlations and odds ratios (ORs) were estimated. RESULTS The random forest classifier utilized autoantibodies combination composed of IgM anti-IGHG1102-131, IgM anti-IGHG1102-131 MDA and IgM anti-IGHA1307-327 achieved predictive performance as an accuracy of 88.0%, a sensitivity of 93.7%, and a specificity of 84.4% which may be as potential diagnostic biomarkers to differentiate patients with pSS from rheumatoid arthritis (RA), and secondary SS in RA and HCs. CONCLUSIONS Our findings imply that low levels of IgA anti-IGHG1102-131 MDA (OR = 2.646), IgA anti-IGHG1102-131 (OR = 2.408), IgA anti-CFAH1045-1062 (OR = 2.571), and IgA anti-IGHA1307-327 (OR = 2.905) may denote developing risks of pSS, respectively.
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Affiliation(s)
- Yuarn-Jang Lee
- Division of Infectious Diseases, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 11031, Taiwan; Division of Infectious Diseases, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Ying-Chin Lin
- Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan; Department of Family Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; Department of Geriatric Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Chen-Chung Liao
- Proteomics Research Center, National Yang-Ming University, Taipei 112, Taiwan
| | - Yu-Sheng Chang
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan; Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Yu-Hui Huang
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - I-Jung Tsai
- Ph.D. Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - Jin-Hua Chen
- Graduate Institute of Data Science, College of Management, Taipei Medical University, Taipei 11031, Taiwan; Statistics Center, Office of Data Science, Taipei Medical University, Taipei 11031, Taiwan
| | - Sheng-Hong Lin
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan; Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Yi-Fang Lin
- Department of Laboratory Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
| | - Ting-Wan Hsieh
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; Department of Laboratory Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
| | - Yi-Su Chen
- Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan
| | - Chih-Yin Wu
- Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan
| | - Chi-Ching Chang
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; Division of Rheumatology, Immunology and Allergy, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 11031, Taiwan.
| | - Ching-Yu Lin
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; Ph.D. Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
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Hu Q, Chen H, Shen C, Zhang B, Weng X, Sun X, Liu J, Dong Z, Hu K, Ge J, Sun A. Impact and potential mechanism of effects of chronic moderate alcohol consumption on cardiac function in aldehyde dehydrogenase 2 gene heterozygous mice. Alcohol Clin Exp Res 2022; 46:707-723. [PMID: 35315077 PMCID: PMC9321750 DOI: 10.1111/acer.14811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 03/12/2022] [Accepted: 03/16/2022] [Indexed: 12/01/2022]
Abstract
Background Mitochondrial aldehyde dehydrogenase 2 (ALDH2) is a key enzyme in alcohol metabolism. The ALDH2*2 mutations are found in approximately 45% of East Asians, with 40% being heterozygous (HE) ALDH2*1/*2 and 5% homozygous (HO) ALDH2*2/*2. Studies have shown that HO mice lack cardioprotective effects induced by moderate alcohol consumption. However, the impact of moderate alcohol consumption on cardiac function in HE mice is unknown. Methods In this study, HO, HE, and wild‐type (WT) mice were subjected to a 6‐week moderate alcohol drinking protocol, following which myocardial tissue and cardiomyocytes of the mice were extracted. Results We found that moderate alcohol exposure did not increase mortality, myocardial fibrosis, apoptosis, or inflammation in HE mice, which differs from the effects observed in HO mice. After exposure to the 6‐week alcohol drinking protocol, there was impaired cardiac function, cardiomyocyte contractility, and intracellular Ca2+ homeostasis and mitochondrial function in both HE and HO mice as compared to WT mice. Moreover, these animals showed overt oxidative stress production and increased levels of the activated forms of calmodulin‐dependent protein kinase II (CaMKII) and ryanodine receptor type 2 (RYR2) phosphorylation protein. Conclusion We found that moderate alcohol exposure impaired cardiac function in HE mice, possibly by increasing reactive oxygen species (ROS)/CaMKII/RYR2‐mediated Ca2+ handling abnormalities. Hence, we advocate that people with ALDH2*1/*2 genotypes rigorously avoid alcohol consumption to prevent potential cardiovascular harm induced by moderate alcohol consumption.
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Affiliation(s)
- Qinfeng Hu
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Hang Chen
- Heart Center of Fujian Province, Union Hospital, Fujian Medical University, Fuzhou, China.,Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Cheng Shen
- Department of Cardiology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Beijian Zhang
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Viral Heart Diseases, Shanghai, China.,Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Xinyu Weng
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Viral Heart Diseases, Shanghai, China.,Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Xiaolei Sun
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Viral Heart Diseases, Shanghai, China.,Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Jin Liu
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Viral Heart Diseases, Shanghai, China.,Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Zhen Dong
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Viral Heart Diseases, Shanghai, China.,Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Kai Hu
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Junbo Ge
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Viral Heart Diseases, Shanghai, China.,Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Aijun Sun
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Viral Heart Diseases, Shanghai, China.,Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
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García-Medina S, Galar-Martínez M, Cano-Viveros S, Ruiz-Lara K, Gómez-Oliván LM, Islas-Flores H, Gasca-Pérez E, Pérez-Pastén-Borja R, Arredondo-Tamayo B, Hernández-Varela J, Chanona-Pérez JJ. Bioaccumulation and oxidative stress caused by aluminium nanoparticles and the integrated biomarker responses in the common carp (Cyprinus carpio). CHEMOSPHERE 2022; 288:132462. [PMID: 34626656 DOI: 10.1016/j.chemosphere.2021.132462] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 09/29/2021] [Accepted: 10/01/2021] [Indexed: 06/13/2023]
Abstract
The use of nanoparticles (NPs) in various industries has experienced significant growth due to the advantages they offer, so the increase in their use has generated the continuous discharge of these products in numerous water bodies, which can affect the organisms that inhabit them. Previous studies have shown that Al is capable of producing oxidative stress in aquatic organisms; however, so far the impact of AlNP on hydrobionts is limited. Therefore, the objective of this work was to determine the oxidative stress produced by AlNP in liver, gill and blood of Cyprinus carpio, as well as their bioconcentration factor (BCF) in various tissues. For this purpose, the organisms were exposed to 50 μg L-1 AlNP for 12-96 h. Subsequently, the tissues were obtained and the activity of antioxidant enzymes, oxidative damage to lipids and proteins were determined, and the BCF was calculated for liver, brain, gill and muscle. The results showed alterations in the activity of antioxidant enzymes and increased levels of lipoperoxidation, hydroperoxides and oxidized proteins. When establishing the integrated biomarker response, it was observed that the liver is the most affected organ and these effects are related to the Al content in the tissue. Finally, it was observed that muscle and gills presented a higher BCF, compared to brain and liver. These findings show that AlNP are capable of generating oxidative stress in carp, affecting tissue function and accumulating, which represents an important risk for the health of fish such as common carp.
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Affiliation(s)
- Sandra García-Medina
- Laboratorio de Toxicología Acuática, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu, Esq. Manuel L. Stampa s/n, Gustavo A. Madero, Ciudad de México, 07738, Mexico.
| | - Marcela Galar-Martínez
- Laboratorio de Toxicología Acuática, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu, Esq. Manuel L. Stampa s/n, Gustavo A. Madero, Ciudad de México, 07738, Mexico.
| | - Selene Cano-Viveros
- Laboratorio de Toxicología Acuática, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu, Esq. Manuel L. Stampa s/n, Gustavo A. Madero, Ciudad de México, 07738, Mexico
| | - Karina Ruiz-Lara
- Laboratorio de Toxicología Acuática, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu, Esq. Manuel L. Stampa s/n, Gustavo A. Madero, Ciudad de México, 07738, Mexico
| | - Leobardo Manuel Gómez-Oliván
- Laboratorio de Toxicología Ambiental, Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n. Col, Residencial Colón, Toluca, Estado de México, 50120, Mexico
| | - Hariz Islas-Flores
- Laboratorio de Toxicología Ambiental, Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n. Col, Residencial Colón, Toluca, Estado de México, 50120, Mexico
| | - Eloy Gasca-Pérez
- Cátedra CONACYT, Laboratorio de Toxicología Acuática, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu, Esq. Manuel L. Stampa s/n, Gustavo A. Madero, Ciudad de México, 07738, Mexico
| | - Ricardo Pérez-Pastén-Borja
- Laboratorio de Toxicología Molecular, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu, Esq. Manuel L. Stampa s/n, Gustavo A. Madero, Ciudad de México, 07738, Mexico
| | - Benjamín Arredondo-Tamayo
- Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu, Esq. Manuel L. Stampa s/n, Gustavo A. Madero, Ciudad de México, 07738, Mexico
| | - Josué Hernández-Varela
- Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu, Esq. Manuel L. Stampa s/n, Gustavo A. Madero, Ciudad de México, 07738, Mexico
| | - José Jorge Chanona-Pérez
- Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu, Esq. Manuel L. Stampa s/n, Gustavo A. Madero, Ciudad de México, 07738, Mexico
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Arakawa Y, Itoh S, Fukazawa Y, Ishiguchi H, Kohmoto J, Hironishi M, Ito H, Kihira T. Association between oxidative stress and microRNA expression pattern of ALS patients in the high-incidence area of the Kii Peninsula. Brain Res 2020; 1746:147035. [PMID: 32739158 DOI: 10.1016/j.brainres.2020.147035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/30/2020] [Accepted: 07/26/2020] [Indexed: 11/29/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is a progressive degenerative disorder of the upper and lower motor neuron systems. The high incidence of ALS in the southern part of the Kii Peninsula of Japan (K-ALS) was reported in the 1960s, but it has gradually decreased to the worldwide average. Although causes of the high incidence of ALS in this area are unknown, our previous studies suggested that environmental factors, including essential mineral deficiency and increased metal-induced oxidative stress, play a role in its development. Recently, it has been reported that microRNAs (miRNA) contribute to the degeneration of nervous system such as ALS. The aim of this study is to explore specific miRNAs in K-ALS and evaluate relationships between oxidative stress. We comprehensively analyzed serum miRNAs and examined urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG), serum Cu/Zn superoxide dismutase (SOD) and serum Nɛ-hexanoyl lysin (HEL) as oxidative stress markers in the patients with K-ALS, sporadic ALS (S-ALS), residents in this area (K-residents) and controls from another area. The expression levels of miR-92a-3p and miR-486-5p in the patients with K-ALS were significantly higher than those in controls. The HEL levels were significantly higher in the patients with K-ALS than in those with S-ALS and controls. The expression levels of miR-92a-3p and miR-486-5p were not correlated with the levels of HEL. A set of high levels of miR-92a-3p, miR-486-5p and serum HEL may be a useful biomarker for K-ALS in the Kii Peninsula. The findings should be further studied by a large number of subjects.
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Affiliation(s)
- Yuya Arakawa
- Ehime Prefectural University of Health Sciences, Japan; Kansai University of Health Sciences, Japan.
| | | | | | - Hiroshi Ishiguchi
- Wakayama Medical University, Japan; Shingu Municipal Medical Center, Japan
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Cytochrome c modification and oligomerization induced by cardiolipin hydroperoxides in a membrane mimetic model. Arch Biochem Biophys 2020; 693:108568. [DOI: 10.1016/j.abb.2020.108568] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 08/10/2020] [Accepted: 08/27/2020] [Indexed: 12/31/2022]
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Yamada A, Sato Y, Horike T, Miyanaga M, Wang DH. Effects of a Forest Walk on Urinary Dityrosine and Hexanoyl-Lysine in Young People: A Pilot Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E4990. [PMID: 32664406 PMCID: PMC7400660 DOI: 10.3390/ijerph17144990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/02/2020] [Accepted: 07/07/2020] [Indexed: 11/16/2022]
Abstract
A few studies indicate exposure to forests may alleviate oxidative stress in the body. However, more evidence is needed to support this potentiality. The purpose of the current study aimed at examining whether there is any difference in urinary levels of oxidatively modified proteins or lipids-dityrosine (DT) and hexanoyl-lysine (HEL), respectively, after a forest or urban walk. The study was performed on 29 university students who took part in forest walks (Shinjo Village) in Okayama Prefecture of Japan and on 42 university students who took part in urban walks in the downtown area of Okayama City. Urine samples before and after the walks were analyzed for DT and HEL excretion. Air phytoncides during the walks were also measured. We found a decreased tendency in urinary DT and HEL (p < 0.05) in most participants after the forest walks, but not after the urban walks. We further found the total levels of air phytoncides in the forest field were 1.50 times higher compared with those in the urban field. This study suggests the possibility that regular immersion in a forest environment might contribute toward weakening of the oxidative modifications of proteins or lipids in the body.
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Affiliation(s)
- Ai Yamada
- Department of Biochemistry, Okayama University of Science, Okayama 700-0005, Japan
| | - Yoshiko Sato
- Department of Biochemistry, Okayama University of Science, Okayama 700-0005, Japan
- Wakayama Shin-ai Junior and Senior High School, Wakayama 640-8151, Japan
| | | | - Masamitsu Miyanaga
- Department of Biochemistry, Okayama University of Science, Okayama 700-0005, Japan
| | - Da-Hong Wang
- Department of Biochemistry, Okayama University of Science, Okayama 700-0005, Japan
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Peterson LR, Jiang X, Chen L, Goldberg AC, Farmer MS, Ory DS, Schaffer JE. Alterations in plasma triglycerides and ceramides: links with cardiac function in humans with type 2 diabetes. J Lipid Res 2020; 61:1065-1074. [PMID: 32393551 PMCID: PMC7328042 DOI: 10.1194/jlr.ra120000669] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 04/15/2020] [Indexed: 12/23/2022] Open
Abstract
Cardiac dysfunction in T2D is associated with excessive FA uptake, oxidation, and generation of toxic lipid species by the heart. It is not known whether decreasing lipid delivery to the heart can effect improvement in cardiac function in humans with T2D. Thus, our objective was to test the hypothesis that lowering lipid delivery to the heart would result in evidence of decreased "lipotoxicity," improved cardiac function, and salutary effects on plasma biomarkers of cardiovascular risk. Thus, we performed a double-blind randomized placebo-controlled parallel design study of the effects of 12 weeks of fenofibrate-induced lipid lowering on cardiac function, inflammation, and oxidation biomarkers, and on the ratio of two plasma ceramides, Cer d18:1 (4E) (1OH, 3OH)/24:0 and Cer d18:1 (4E) (1OH, 3OH)/16:0 (i.e., "C24:0/C16:0"), which is associated with decreased risk of cardiac dysfunction and heart failure. Fenofibrate lowered plasma TG and cholesterol but did not improve heart systolic or diastolic function. Fenofibrate treatment lowered the plasma C24:0/C16:0 ceramide ratio and minimally altered oxidative stress markers but did not alter measures of inflammation. Overall, plasma TG lowering correlated with improvement of cardiac relaxation (diastolic function) as measured by tissue Doppler-derived parameter e'. Moreover, lowering the plasma C24:0/C16:0 ceramide ratio was correlated with worse diastolic function. These findings indicate that fenofibrate treatment per se is not sufficient to effect changes in cardiac function; however, decreases in plasma TG may be linked to improved diastolic function. In contrast, decreases in plasma C24:0/C16:0 are linked with worsening cardiac function.
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Affiliation(s)
- Linda R Peterson
- Division of Cardiology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110. mailto:
| | - Xuntian Jiang
- Division of Cardiology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110
| | - Ling Chen
- Division of Biostatistics, Washington University School of Medicine, St. Louis, MO 63110
| | - Anne C Goldberg
- Division of Endocrinology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110
| | - Marsha S Farmer
- Division of Cardiology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110
| | - Daniel S Ory
- Division of Cardiology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110
| | - Jean E Schaffer
- Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215
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Differential regulation of Nrf2 is linked to elevated inflammation and nitrative stress in monocytes of children with autism. Psychoneuroendocrinology 2020; 113:104554. [PMID: 31884317 DOI: 10.1016/j.psyneuen.2019.104554] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 12/10/2019] [Accepted: 12/11/2019] [Indexed: 12/17/2022]
Abstract
Autism spectrum disorder (ASD) is a very complex neurodevelopmental disorder characterized by deficits in social and communication skills. Innate immune cells like monocytes are believed to play a cardinal role in neuroimmune inflammation and nitrative stress. On the other hand, Nrf2, a basic leucine zipper transcription factor plays a significant role in protecting the immune cells against inflammation and oxidants. However, its role in monocytes of ASD children and typically developing control (TDC) children has not been elucidated in relation with inflammation and nitrative stress. Therefore, this study was undertaken to evaluate Nrf2 expression/activity along with parameters of inflammation (NFkB, IL-6, IL-1β) and nitrative stress (iNOS, nitrotyrosine) in monocytes of ASD/TDC children. Further, sulforaphane (SFN) was utilized as an Nrf2 activator to assess its effect on above said inflammatory and nitrative stress parameters. Our study shows that monocytes of ASD subjects have decreased Nrf2 expression/activity along with increased inflammation and nitrative stress. Further, monocytes from ASD have deficiency in induction of Nrf2 activity upon stimulation with LPS. However, activation of Nrf2 in vitro by SFN reverses LPS-induced effects on inflammation in monocytes by reduction in NFkB signaling. Further, treatment with SFN also reverses LPS-induced effects on nitrative stress (iNOS, nitrotyrosine) in monocytes of ASD subjects. This study propounds the idea that SFN protects against nitrative stress and inflammation by downregulating oxidative stress and inflammation through blockade of NFkB signaling in autistic children. This may be the reason behind reported ameliorative effects of SFN in ASD subjects.
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Fedorova TN, Logvinenko AA, Poleshchuk VV, Muzychuk OA, Shabalina AA, Illarioshkin SN. Lipid Peroxidation Products in the Blood Plasma of Patients with Parkinson’s Disease as Possible Biomarkers of Different Stages of the Disease. NEUROCHEM J+ 2019. [DOI: 10.1134/s1819712419040020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Niu X, Wang X, Han Y, Lu C, Chen X, Wang T, Xu M, Zhu Q. Influence of malondialdehyde-induced modifications on physicochemical and digestibility characteristics of whey protein isolate. J Food Biochem 2019; 43:e13041. [PMID: 31502294 DOI: 10.1111/jfbc.13041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 08/22/2019] [Accepted: 08/26/2019] [Indexed: 12/18/2022]
Abstract
Impacts of lipid oxidation product malondialdehyde (MDA) on the properties of whey protein isolate (WPI) were investigated in this study. The incorporation of MDA into WPI promoted the formation of protein carbonyls, with the significant loss of protein sulfhydryls, impaired intrinsic fluorescence, and increased protein surface hydrophobicity. The visualized band profiles revealed by gel electrophoresis and immunoblotting suggested that WPI's main components β-lactoglobulin and α-lactalbumin were the targets of MDA, and the derivatives of MDA were involved in protein cross-linking and aggregation at higher molecular weights. Abnormal protein aggregation was further confirmed by scanning electron microscopy analysis of the surface microstructure of MDA-modified WPI. Finally, in vitro digestibility assay indicated that the modification of MDA reduced WPI's susceptibility to digestive enzymes. The present study demonstrated that the contribution of MDA to protein modification in dairy products can be substantial in complex foodstuffs composed of lipids and proteins. PRACTICAL APPLICATIONS: The present work enhanced our knowledge on the remarkable susceptibility of dairy product WPI to lipid oxidation product MDA. With the trend of application of highly unsaturated fatty acids such as fish oil or alga oils as functional ingredients in dairy products, it is obvious that apart from monitoring lipid oxidation products, the resultant changes in dietary proteins deserve more attention. The food industry must be aware of the importance of appropriate preventive measures in minimizing the negative effects of lipid oxidation products on dairy products.
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Affiliation(s)
- Xiaoying Niu
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, People's Republic of China
| | - Xiaoyan Wang
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, People's Republic of China
| | - Yating Han
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, People's Republic of China
| | - Cairu Lu
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, People's Republic of China
| | - Xiaoqiao Chen
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, People's Republic of China
| | - Taoyan Wang
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, People's Republic of China
| | - Maojun Xu
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, People's Republic of China
| | - Qin Zhu
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, People's Republic of China
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Kiyuna LA, Albuquerque RPE, Chen CH, Mochly-Rosen D, Ferreira JCB. Targeting mitochondrial dysfunction and oxidative stress in heart failure: Challenges and opportunities. Free Radic Biol Med 2018; 129:155-168. [PMID: 30227272 PMCID: PMC6309415 DOI: 10.1016/j.freeradbiomed.2018.09.019] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/28/2018] [Accepted: 09/14/2018] [Indexed: 02/06/2023]
Abstract
Mitochondrial dysfunction characterized by impaired bioenergetics, oxidative stress and aldehydic load is a hallmark of heart failure. Recently, different research groups have provided evidence that selective activation of mitochondrial detoxifying systems that counteract excessive accumulation of ROS, RNS and reactive aldehydes is sufficient to stop cardiac degeneration upon chronic stress, such as heart failure. Therefore, pharmacological and non-pharmacological approaches targeting mitochondria detoxification may play a critical role in the prevention or treatment of heart failure. In this review we discuss the most recent findings on the central role of mitochondrial dysfunction, oxidative stress and aldehydic load in heart failure, highlighting the most recent preclinical and clinical studies using mitochondria-targeted molecules and exercise training as effective tools against heart failure.
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Affiliation(s)
- Ligia Akemi Kiyuna
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | | | - Che-Hong Chen
- Department of Chemical and Systems Biology, Stanford University School of Medicine, USA
| | - Daria Mochly-Rosen
- Department of Chemical and Systems Biology, Stanford University School of Medicine, USA
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Moore TA, Ahmad IM, Zimmerman MC. Oxidative Stress and Preterm Birth: An Integrative Review. Biol Res Nurs 2018; 20:497-512. [PMID: 30068228 DOI: 10.1177/1099800418791028] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND A variety of methods and measures have been used to quantify oxidative stress in clinical studies related to preterm birth (PTB), and studies have reported conflicting findings. No integrative reviews have been conducted. OBJECTIVE To describe specific molecules used as markers of oxidative stress and methods to measure these molecules and to review the literature for associations between oxidative stress and PTB specific to these molecules. METHOD Systematic literature searches were conducted in June 2015 and updated in 2017 in databases from the Biomedical Reference Collection: Basic Edition, including MEDLINE and clinicaltrials.gov . Articles were included if they described original research published after 2009 and compared PTB or preterm premature rupture of membranes with term birth (TB). RESULTS Abstracts ( n = 3,107) were reviewed for inclusion/exclusion criteria. Of these, 308 were full-text reviewed, and 30 articles were included in this review. All were identified as nonexperimental. The most common measurements of oxidative stress were quantification of total oxidant or antioxidant status or lipid peroxidation. Studies measuring reactive oxygen species or by-products of oxidative stress reported higher levels of these molecules for preterm specimens compared to TB specimens. Studies measuring antioxidants reported lower levels for these molecules in PTB specimens. Few of the studies had inconclusive findings. DISCUSSION Findings suggest that an imbalance between oxidants and antioxidants may be associated with PTB. The measurements and findings to date limit interpretation and understanding. Research using multidimensional methods and multidisciplinary teams are necessary to advance research and practice.
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Affiliation(s)
- Tiffany A Moore
- 1 College of Nursing, University of Nebraska Medical Center, Omaha, NE, USA
| | - Iman M Ahmad
- 2 College of Allied Health Professions, University of Nebraska Medical Center, Omaha, NE, USA
| | - Matthew C Zimmerman
- 3 College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
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14
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Shamoto-Nagai M, Hisaka S, Naoi M, Maruyama W. Modification of α-synuclein by lipid peroxidation products derived from polyunsaturated fatty acids promotes toxic oligomerization: its relevance to Parkinson disease. J Clin Biochem Nutr 2018; 62:207-212. [PMID: 29892158 PMCID: PMC5990400 DOI: 10.3164/jcbn.18-25] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 03/06/2018] [Indexed: 12/14/2022] Open
Abstract
Recently, toxic α-synuclein oligomer, which can mediate cell-to-cell propagation is suggested to cause sporadic Parkinson disease. α-Synuclein interacts with membrane lipids especially polyunsaturated fatty acids to stabilize its three-dementional structure. Peroxidation of polyunsaturated fatty acids may reduce their affinity to α-synuclein and peroxidation byproducts might modify α-synuclein. 4-Hydroxy-2-nonenal derived from n-6 polyunsaturated fatty acids was reported to modify α-synuclein to produce a toxic oligomer. Moreover, the accumulation of 4-hydroxy-2-nonenal, which could induce oligomeriztion of α-synuclein, was found in parkinsonian brains. Docosahexaenoic acid, an n-3 polyunsaturated fatty acids abundant in the neuronal membrane, was also found to enhance α-synuclein oligomerization; however, the precise details of the chemical reaction involved are unclear. Propanoylated lysine, a specific indicator of docosahexaenoic acid oxidation, was increased in neuronal differentiated human neuroblastoma SH-SY5Y cells overexpressing α-synuclein. α-Synuclein might be modified by the peroxidation products and then, is degraded by the autophagy-lysosome system. In addition, in the cells overexpressing α-synuclein, the mitochondrial electrone transfer chain was found to be inhibited. Accumulation of abnormal α-synuclein modified by lipid radicals derived from polyunsaturated fatty acids may be not only an indicator of brain oxidative stress but also causative of neurodegeneration such as Parkinson disease by impairing mitochondrial function.
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Affiliation(s)
- Masayo Shamoto-Nagai
- Department of Health and Nutrition, Faculty of Psychological and Physical Science, Aichi Gakuin University, 12 Araike, Iwasaki-cho, Nissin, Aichi 470-0195, Japan
| | - Shinsuke Hisaka
- Graduate School of Pharmacy, Meijo University, 150 Yagotoyama, Tenpaku-ku, Nagoya, Aichi 466-8503, Japan
| | - Makoto Naoi
- Department of Health and Nutrition, Faculty of Psychological and Physical Science, Aichi Gakuin University, 12 Araike, Iwasaki-cho, Nissin, Aichi 470-0195, Japan
| | - Wakako Maruyama
- Department of Health and Nutrition, Faculty of Psychological and Physical Science, Aichi Gakuin University, 12 Araike, Iwasaki-cho, Nissin, Aichi 470-0195, Japan
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Abstract
Abstract
Oxidative stress may cause a wide variety of free radical reactions to produce deleterious modifications in membranes, proteins, enzymes, and DNA. Reactive Oxygen Species (ROS) generated by myeloperoxidase (MPO) can induce lipid peroxidation and also play an important role in the generation of reactive chlorinating and brominating species. As the universal biomarkers, chemical, and immunochemical approach on oxidatively modified and halogenated tyrosines has been carried out. As amido-type adduct biomarkers, chemical, and immunochemical evaluation of hexanoyl- and propanoyl-lysines, hexanoyl- and propanoyl-dopamines and phospholipids were prepared and developed for application of evaluation of novel antioxidative functional food factors. We have also involved in application of oxidatively modified DNAs such as 8-hydroxy- and 8-halogenated deoxyguanosines as the useful biomarkers for age-related diseases using both in vitro and in vivo systems. Application of these oxidative stress biomarkers for novel type of functional food development and recent approach for development of novel evaluation systems are also discussed.
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Affiliation(s)
- Toshihiko Osawa
- Department of Health and Nutrition, Faculty of Psychological and Physical Science, Aichi Gakuin University, Aichi, Japan
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16
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Liao CC, Chang YS, Cheng CW, Chi WM, Tsai KL, Chen WJ, Kung TS, Tai CC, Lin YF, Lin HT, Lu YY, Lin CY. Isotypes of autoantibodies against differentially expressed novel malondialdehyde-modified peptide adducts in serum of Taiwanese women with rheumatoid arthritis. J Proteomics 2017; 170:141-150. [PMID: 28870784 DOI: 10.1016/j.jprot.2017.08.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 08/09/2017] [Accepted: 08/18/2017] [Indexed: 01/19/2023]
Abstract
This study identified and validated four differentially expressed novel malondialdehyde (MDA)-modified peptide adducts and evaluated autoantibodies against native and MDA-modified peptides among Taiwanese women patients with rheumatoid arthritis (RA), osteoarthritis (OA) and healthy controls (HCs). Ig kappa chain C region76-99, alpha-1-antitrypsin284-298, alpha-2-macroglobulin824-841, and apolipoprotein B-1004022-4040 exhibiting 2-fold differences in relative modification ratios were identified by concanavalin A (Con A) affinity chromatography, 1D SDS-PAGE, in-gel digestion, nano-LC/MS/MS and nano-LC/MS using pooled serum-derived Con A-captured proteins from 9 RA and 9 age-matched HCs. Furthermore, the levels of proteins, serum MDA, and MDA-modified protein adducts were further validated against individual serum from 20 RA and 20 HCs, and autoantibodies against native and their MDA-modified peptides used 45 RA, 30 OA and 45 HCs. Levels of serum MDA and MDA-modified protein adducts were significantly higher in RA than HCs but protein levels were not significantly different. Serum Igs G and M against MDA-modified peptides showed better diagnostic performance in differentiating among patients with RA, OA and HCs, with an area under the receiver operating characteristic curve of 0.96-0.98, sensitivity of 88.9%-97.8%, and specificity of 88.9%-100%. Autoantibodies against MDA-modified epitopes become useful clinical biomarkers for RA. BIOLOGICAL SIGNIFICANCE By using a label-free relative quantitative proteomic analysis of concanavalin A (Con A)-bound serum samples, the current study discovered and validated malondialdehyde (MDA)-modified peptide adducts as novel biomarkers for differentiating between rheumatoid arthritis (RA) patients and healthy controls (HCs). In addition, the serum levels of MDA, proteins, and MDA-modified protein adducts as well as the MDA modification of proteins were determined. Isotypes of autoantibodies against MDA-modified peptide adducts can be used as serological biomarkers for further discriminating among RA patients, osteoarthritis patients and HCs. This strategy can become the basis for identifying potential diagnostic and pathological biomarkers for RA.
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Affiliation(s)
- Chen-Chung Liao
- Proteomics Research Center, National Yang-Ming University, Taipei 112, Taiwan
| | - Yu-Sheng Chang
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Chao-Wen Cheng
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Wei-Ming Chi
- Department of Laboratory Medicine, Shuang-Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
| | - Kai-Leun Tsai
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
| | - Wei-Jung Chen
- Department of Biotechnology and Animal Science, National Ilan University, Ilan 26047, Taiwan
| | - Ting-Shuan Kung
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - Chih-Chun Tai
- Department of Laboratory Medicine, Shuang-Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
| | - Yi-Fang Lin
- Department of Laboratory Medicine, Shuang-Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
| | - Hung-Tse Lin
- Department of Laboratory Medicine, LinKou Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
| | - Yi-Ying Lu
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - Ching-Yu Lin
- Department of Biotechnology and Animal Science, National Ilan University, Ilan 26047, Taiwan; School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
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17
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Haworth KM, Chandler HL. Oxidative Stress Measures of Lipid and DNA Damage in Human Tears. Invest Ophthalmol Vis Sci 2017; 58:BIO151-BIO157. [PMID: 28662237 PMCID: PMC5491242 DOI: 10.1167/iovs.17-21436] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Purpose We evaluate feasibility and repeatability of measures for lipid peroxidation and DNA oxidation in human tears, as well as relationships between outcome variables, and compared our findings to previously reported methods of evaluation for ocular sun exposure. Methods A total of 50 volunteers were seen for 2 visits 14 ± 2 days apart. Tear samples were collected from the inferior tear meniscus using a glass microcapillary tube. Oxidative stress biomarkers were quantified using enzyme-linked immunosorbent assay (ELISA): lipid peroxidation by measurement of hexanoyl-lysine (HEL) expression; DNA oxidation by measurement of 8-oxo-2′-deoxyguinosone (8OHdG) expression. Descriptive statistics were generated. Repeatability estimates were made using Bland-Altman plots with mean differences and 95% limits of agreement were calculated. Linear regression was conducted to evaluate relationships between measures. Results Mean (±SD) values for tear HEL and 8OHdG expression were 17368.02 (±9878.42) nmol/L and 66.13 (±19.99) ng/mL, respectively. Repeatability was found to be acceptable for both HEL and 8OHdG expression. Univariate linear regression supported tear 8OHdG expression and spring season of collection to be predictors of higher tear HEL expression; tear HEL expression was confirmed as a predictor of higher tear 8OHdG expression. Conclusions We demonstrate feasibility and repeatability of estimating previously unreported tear 8OHdG expression. Seasonal temperature variation and other factors may influence tear lipid peroxidation. Support is demonstrated to suggest lipid damage and DNA damage occur concurrently on the human ocular surface.
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Affiliation(s)
| | - Heather L Chandler
- The Ohio State University College of Optometry, Columbus, Ohio, United States
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18
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Rejc B, Kato Y, Karas-Kuzelicki N, Osredkar J, Gersak K. Lipid-lysine adducts and modified tyrosines as markers of oxidative stress in the second trimester of pregnancy and their association with infant characteristics. Exp Ther Med 2016; 11:797-805. [PMID: 26997995 DOI: 10.3892/etm.2016.2985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 10/14/2015] [Indexed: 12/15/2022] Open
Abstract
Pregnancy is a physiological state accompanied by excessive levels of oxidative stress (OS), due to the increased demand and utilisation of oxygen. There is increasing evidence that maternally augmented OS exerts an adverse effect on pregnancy outcome. The aim of the present prospective study was to determine the association between the urinary concentration of relatively novel OS markers measured in the second trimester of pregnancy and the infant characteristics at birth. The maternal levels of urinary hexanoyl-lysine (HEL), propanoyl-lysine (PRL), dityrosine (DiY) and 3-nitrotyrosine (NY) were evaluated in generally healthy pregnant subjects to determine their association with birth weight, gestation at delivery and Apgar score. The observed levels of the markers were in agreement with those measured in healthy non-pregnant subjects in a previous study. A positive correlation was detected between HEL and PRL, as well as between HEL and DiY. Although the absence of a correlation between NY and the other markers has been previously noted in a non-pregnant population, a positive correlation in the pair PRL-NY (r=0.367; P<0.001) was observed in the present study. Maternal cigarette smoking was associated with increased urinary PRL levels (P=0.034). The most notable observation in the present study was that high levels of PRL and NY were associated with low Apgar scores at 1 and 5 min after birth (OR, 1.098 and 2.084 for PRL and NY, respectively; P<0.05). However, poor predictive accuracy was shown. For NY, the following results were obtained: Area under the curve (AUC), 0.818; sensitivity, 100%; specificity, 57%; positive predictive value (PPV), 11.54%; and negative predictive value (NPV), 100%. For PLR the values were as follows: AUC, 0.802; sensitivity, 100%; specificity, 62.6%; PPV, 13.05%; and NPV, 100%. DiY was negatively associated with preterm birth risk (OR=0.703; P=0.028). In conclusion, the results of the present study indicated the presence of OS in the second trimester of pregnancy, which was detected with damage to lipids and proteins and associated with an adverse Apgar score; however, the selected urinary markers exhibited poor positive predictive efficacy.
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Affiliation(s)
- Barbara Rejc
- Department of Obstetrics and Gynaecology, University Medical Centre Ljubljana, Ljubljana 1000, Slovenia
| | - Yoji Kato
- School of Human Science and Environment, University of Hyogo, Himeji, Hyogo 670-00092, Japan
| | | | - Josko Osredkar
- Clinical Institute of Clinical Chemistry and Biochemistry, University Medical Centre Ljubljana, Ljubljana 1525, Slovenia
| | - Ksenija Gersak
- Department of Obstetrics and Gynaecology, University Medical Centre Ljubljana, Ljubljana 1000, Slovenia; Faculty of Medicine, University of Ljubljana, Ljubljana 1000, Slovenia
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19
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Choi W, Lian C, Ying L, Kim GE, You IC, Park SH, Yoon KC. Expression of Lipid Peroxidation Markers in the Tear Film and Ocular Surface of Patients with Non-Sjogren Syndrome: Potential Biomarkers for Dry Eye Disease. Curr Eye Res 2016; 41:1143-9. [PMID: 26731289 DOI: 10.3109/02713683.2015.1098707] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE To investigate the expression of lipid peroxidation markers in the tear film and ocular surface and their correlation with disease severity in patients with dry eye disease. METHODS The concentrations of hexanoyl-lysine (HEL), 4-hydroxy-2-nonenal (HNE), and malondialdehyde (MDA) were measured with enzyme-linked immunosorbent assays in tears obtained from 44 patients with non-Sjogren syndrome dry eye and 33 control subjects. The correlations between the marker levels and the tear film and ocular surface parameters, including tear film break-up time (BUT), Schirmer tear value, tear clearance rate, keratoepitheliopathy scores, corneal sensitivity, conjunctival goblet cell density, and symptom score, were analyzed. The expression of the lipid peroxidation markers HEL, 4-HNE, and MDA in the conjunctiva was evaluated using immunohistochemistry. RESULTS The concentrations of HEL, 4-HNE, and MDA were 279.84 ± 69.98 nmol/L, 0.02 ± 0.01 μg/mL, and 3.80 ± 1.05 pmol/mg in control subjects and 283.21 ± 89.67 nmol/L (p = 0.97), 0.20 ± 0.03 μg/mL (p < 0.01), and 13.32 ± 4.03 pmol/mg (p < 0.01) in dry eye patients. 4-HNE and MDA levels significantly correlated with BUT, Schirmer tear value, tear clearance rate, keratoepitheliopathy scores, conjunctival goblet cell density, and symptom score (p < 0.05), whereas HEL levels did not correlate with these parameters. Staining intensities for 4-HNE and MDA increased in dry eye patients. CONCLUSIONS The expression of late lipid peroxidation markers, 4-HNE and MDA, increases in the tear film and ocular surface of patients with dry eye. The levels correlate with various tear film and ocular surface parameters and may reflect the severity of dry eye disease.
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Affiliation(s)
- Won Choi
- a Department of Ophthalmology , Chonnam National University Medical School and Hospital , Gwangju , Korea
| | - Cui Lian
- a Department of Ophthalmology , Chonnam National University Medical School and Hospital , Gwangju , Korea
| | - Li Ying
- a Department of Ophthalmology , Chonnam National University Medical School and Hospital , Gwangju , Korea
| | - Ga Eon Kim
- b Department of Pathology , Chonnam National University Medical School and Hospital , Gwangju , Korea
| | - In Cheon You
- c Department of Ophthalmology , Chonbuk National University Medical School and Hospital , Jeonju , Korea
| | - Soo Hyun Park
- d College of Veterinary Medicine , Chonnam National University , Gwangju , Korea
| | - Kyung Chul Yoon
- a Department of Ophthalmology , Chonnam National University Medical School and Hospital , Gwangju , Korea
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20
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Yang L, Kirikoshi J, Sekimoto S, Takasugi M, Fukunaga K, Hosomi R, Hishida A, Kawahara N, Yamagishi T, Arai H. Effect of Bean Extract of Yabumame ( Amphicarpaea bracteata (L.) Fernald subsp. edgeworthii (Benth.) H.Ohashi) on Low-Density Lipoprotein Oxidation In Vitro. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2015. [DOI: 10.3136/fstr.21.589] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Lifeng Yang
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology
| | - Jyunichi Kirikoshi
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology
| | - Shogo Sekimoto
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology
| | - Mikako Takasugi
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kyushu Sangyo University
| | - Kenji Fukunaga
- Faculty of Chemistry, Materials and Bioengineering, Kansai University
| | - Ryota Hosomi
- Faculty of Chemistry, Materials and Bioengineering, Kansai University
| | - Atsuyuki Hishida
- Division of Hokkaido, Research Center for Medicinal Plant Resources, National Institute of Biomedical Innovation
| | - Nobuo Kawahara
- Division of Hokkaido, Research Center for Medicinal Plant Resources, National Institute of Biomedical Innovation
| | | | - Hirofumi Arai
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology
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21
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Guo Y, Yuan H, Jiang L, Yang J, Zeng T, Xie K, Zhang C, Zhao X. Involvement of decreased neuroglobin protein level in cognitive dysfunction induced by 1-bromopropane in rats. Brain Res 2014; 1600:1-16. [PMID: 25557405 DOI: 10.1016/j.brainres.2014.12.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 11/27/2014] [Accepted: 12/10/2014] [Indexed: 12/30/2022]
Abstract
1-Bromopropane (1-BP) is used as a substitute for ozone-depleting solvents (ODS) in industrial applications. 1-BP could display central nervous system (CNS) neurotoxicity manifested by cognitive dysfunction. Neuroglobin (Ngb) is an endogenous neuroprotectant and is predominantly expressed in the nervous system. The present study aimed to investigate Ngb involvement in CNS neurotoxicity induced by 1-BP in rats. Male Wistar rats were randomly divided into 5 groups (n=14) and treated with 0, 100, 200, 400 and 800 mg/kg bw 1-BP, respectively, by gavage for consecutive 12 days. Rats displayed cognitive dysfunction dose-dependently through Morris water maze (MWM) test. Significant neuron loss in layer 5 of the prelimbic cortex (PL) was observed. Moreover, 1-BP decreased Ngb protein level in cerebral cortex and Ngb decrease was significantly positively correlated with cognitive dysfunction. Glutathione (GSH) content, GSH/oxidized glutathione (GSSG) ratio and glutamate cysteine ligase (GCL) activity decreased in cerebral cortex, coupled with the increase in GSSG content. GSH and GSH/GSSG ratio decrease were significantly positively correlated with cortical Ngb decrease. Additionally, levels of N-epsilon-hexanoyl-lysine (HEL) and 4-hydroxy-2-nonenal (4-HNE) modified proteins in cerebral cortex of 1-BP-treated rats increased significantly. In conclusion, it was suggested that 1-BP resulted in decreased endogenous neuroprotectant Ngb in cerebral cortex, which might play an important role in CNS neurotoxicity induced by 1-BP and that 1-BP-induced oxidative stress in cerebral cortex might partly be responsible for Ngb decrease.
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Affiliation(s)
- Ying Guo
- Institute of Toxicology, School of Public Health, Shandong University, 44 West Wenhua Road, Jinan, Shandong, PR China
| | - Hua Yuan
- Institute of Toxicology, School of Public Health, Shandong University, 44 West Wenhua Road, Jinan, Shandong, PR China
| | - Lulu Jiang
- Institute of Toxicology, School of Public Health, Shandong University, 44 West Wenhua Road, Jinan, Shandong, PR China
| | - Junlin Yang
- Institute of Toxicology, School of Public Health, Shandong University, 44 West Wenhua Road, Jinan, Shandong, PR China
| | - Tao Zeng
- Institute of Toxicology, School of Public Health, Shandong University, 44 West Wenhua Road, Jinan, Shandong, PR China
| | - Keqin Xie
- Institute of Toxicology, School of Public Health, Shandong University, 44 West Wenhua Road, Jinan, Shandong, PR China
| | - Cuili Zhang
- Institute of Toxicology, School of Public Health, Shandong University, 44 West Wenhua Road, Jinan, Shandong, PR China
| | - Xiulan Zhao
- Institute of Toxicology, School of Public Health, Shandong University, 44 West Wenhua Road, Jinan, Shandong, PR China.
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22
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Sugiyama A, Sun J. Immunochemical detection of lipid hydroperoxide- and aldehyde-modified proteins in diseases. Subcell Biochem 2014; 77:115-25. [PMID: 24374923 DOI: 10.1007/978-94-007-7920-4_10] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Polyunsaturated fatty acid (PUFA) is easily peroxidized by free radicals and enzymes. When this occurs, it results in the compromised integrity of cellular membranes and leads to lipid hydroperoxide as a major reaction product, which is decomposed into aldehyde. Lipid hydroperoxide-modified lysine is known to be an early product of the lipid peroxidation process, suggesting that it might be a PUFA-oxidative stress marker during the initial stage of oxidative stress. Lipid hydroperoxides cause or enhance ROS-mediated DNA fragmentation. The α,β-unsaturated aldehydes are end products of PUFA peroxidation. They are highly reactive and readily attack and modify the protein amino acid residues into aldehyde-modified proteins. Lipid peroxidation-derived α,β-unsaturated aldehydes are capable of inducing cellular stress-responsive processes such as cell signaling and apoptosis. The lipid hydroperoxide- and aldehyde-modified proteins have been immunohistochemically detected in diverse pathological situations such as atherosclerosis, Alzheimer's disease, Parkinson's disease, and chemical material-induced liver injury and renal tubular injury in humans and experimental animals. These findings suggest that the expression of the lipid hydroperoxide- and aldehyde-modified proteins is closely associated with the pathogenesis of these diseases in humans and experimental animals.
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Affiliation(s)
- Akihiko Sugiyama
- Course of Veterinary Laboratory Medicine, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Minami 4-101 m Koyama-cho, Tottori, 680-8553, Japan,
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Sakai K, Kino S, Masuda A, Takeuchi M, Ochi T, Osredkar J, Rejc B, Gersak K, Ramarathnam N, Kato Y. Determination of HEL (Hexanoyl-lysine adduct): a novel biomarker for omega-6 PUFA oxidation. Subcell Biochem 2014; 77:61-72. [PMID: 24374918 DOI: 10.1007/978-94-007-7920-4_5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Published evidences indicate that reactive oxygen species (ROS) can induce lipid peroxidation, which plays important role in the pathophysiology of numerous diseases including atherosclerosis, diabetes, cancer and aging process. Monitoring of oxidative modification or oxidative damages of biomolecules may therefore be essential for the understanding of aging, and age-related diseases. N-epsilon-Hexanoyl-lysine (HEL) is a novel lipid peroxidation biomarker which is derived from the oxidation of omega-6 unsaturated fatty acid. In this chapter, development of HEL ELISA and its applications are reported. Assay range of HEL ELISA was 2-700 nmol/L, and showed good linearity and reproducibility. Accuracy of this assay was validated by recovery test and absorption test. HEL concentration in human urine was 22.9 ± 15.4 nmol/L and it was suggested that HEL exists as low molecular substances, in a free or in the peptide-attached form. In contrast with the urine sample, serum HEL was suggested to exist in the protein-attached form, and hydrolysis by protease might be essential for the accurate measurement of HEL in protein containing samples such as serum and cultured cells. By sample pretreatment with proteases, HEL was successfully detected in oxidized LDL, oxidized serum, and rat serum. In conclusion, HEL ELISA can be applied to measure urine, serum, and other biological samples independent of the animal species, and may be useful for the assessment of omega-6 PUFA oxidation in the living bodies.
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Affiliation(s)
- Kazuo Sakai
- Japan Institute for the Control of Aging (JaICA), Nikken SEIL Co., Ltd., 710-1 Haruoka, Fukuroi-shi, Shizuoka, 437-0122, Japan,
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Maruyama W, Shaomoto-Nagai M, Kato Y, Hisaka S, Osawa T, Naoi M. Role of lipid peroxide in the neurodegenerative disorders. Subcell Biochem 2014; 77:127-136. [PMID: 24374924 DOI: 10.1007/978-94-007-7920-4_11] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nervous system controls all the organs in the living like a symphony. In this chapter, the mechanism of neuronal death in aged is discussed in relation to oxidative stress. Polyunsaturated fatty acid (PUFA) is known to be rich in the membranous component of the neurons and plays an important role in maintaining the neuronal functions. Recent reports revealed that oxidation of omega-3 and omega-6 PUFAs, such as docosahexaenoic acid (DHA) and arachidonic acid (ARA), are potent antioxidant but simultaneously, their oxidation products are potentially toxic. In this chapter, the existence of early oxidation products of PUFA is examined in the samples from neurodegenerative disorders and the cellular model. Accumulation of proteins with abnormal conformation is suggested to induce neuronal death by disturbance of proteolysis and mitochondrial function. The role of lipid peroxide and lipid-derived aldehyde adduct proteins is discussed in relation to brain ageing and age-related neurodegeneration.
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Affiliation(s)
- Wakako Maruyama
- Department of Cognitive Brain Science, National Institute for Geriatrics and Gerontology, 35 Morioka, Obu, Aichi, 474-8511, Japan,
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Kato Y. The formation of lipid hydroperoxide-derived amide-type lysine adducts on proteins: a review of current knowledge. Subcell Biochem 2014; 77:21-39. [PMID: 24374915 DOI: 10.1007/978-94-007-7920-4_2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Lipid peroxidation is an important biological reaction. In particular, polyunsaturated fatty acid (PUFA) can be oxidized easily. Peroxidized lipids often react with other amines accompanied by the formation of various covalent adducts. Novel amide-type lipid-lysine adducts have been identified from an in vitro reaction mixture of lipid hydroperoxide with a protein, biological tissues exposed to conditions of oxidative stress and human urine from a healthy person. In this chapter, the current knowledge of amide type adducts is reviewed with a focus on the evaluation of functional foods and diseases with a history of discovery of hexanoyl-lysine (HEL). Although there is extensive research on HEL and other amide-type adducts, the mechanism of generation of the amide bond remains unclear. We have found that the decomposed aldehyde plus peroxide combined with a lysine moiety does not fully explain the formation of the amide-type lipid-lysine adduct that is generated by lipid hydroperoxide. Singlet oxygen or an excited state of the ketone generated from the lipid hydroperoxide may also contribute to the formation of the amide linkage. The amide-adducts may prove useful not only for the detection of oxidative stress induced by disease but also for the estimation of damage caused by an excess intake of PUFA.
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Affiliation(s)
- Yoji Kato
- School of Human Science and Environment, University of Hyogo, Himeji, Hyogo, Japan,
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Abstract
Lipoproteins consist of lipids and apolipoproteins that have functional roles in lipid metabolism. It has been suggested that oxidation of lipoproteins by reactive oxygen species (ROS) may be involved in the inception of various diseases. In particular, the relationship between low-density lipoprotein (LDL) oxidation and atherosclerosis has been studied in great detail. The main target molecules of lipoprotein oxidation are polyunsaturated fatty acid residues of lipids and apolipoproteins. Extensive investigations have characterized oxidative modifications of apolipoprotein B100 (apo B100) in LDL. Furthermore, modifications of apo B100 by oxidized lipids have been confirmed in oxidized LDL and atherosclerotic lesions using immunological techniques. In this chapter, characteristics and oxidation mechanisms of lipoproteins by ROS are described from in vitro and in vivo studies. Oxidative modifications of apo B100 by lipid hydroperoxides, major products of lipid peroxidation at the early stage, are principally reported.
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Affiliation(s)
- Hirofumi Arai
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology, Kitami, Hokkaido, 090-8507, Japan,
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Bachi A, Dalle-Donne I, Scaloni A. Redox Proteomics: Chemical Principles, Methodological Approaches and Biological/Biomedical Promises. Chem Rev 2012. [DOI: 10.1021/cr300073p] [Citation(s) in RCA: 189] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Angela Bachi
- Biological Mass Spectrometry Unit, San Raffaele Scientific Institute, 20132 Milan, Italy
| | | | - Andrea Scaloni
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy
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Crane TE, Kubota C, West JL, Kroggel MA, Wertheim BC, Thomson CA. Increasing the vegetable intake dose is associated with a rise in plasma carotenoids without modifying oxidative stress or inflammation in overweight or obese postmenopausal women. J Nutr 2011; 141:1827-33. [PMID: 21865569 PMCID: PMC3174856 DOI: 10.3945/jn.111.139659] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The optimal amount of vegetable consumption required to reduce chronic disease risk is widely debated. Intervention trials evaluating biological activity of vegetables at various doses are limited. We conducted a 3-dose, crossover feeding trial to test the hypothesis that vegetable intake is associated in a dose-dependent manner with increased plasma carotenoids and subsequently reduced oxidative stress and inflammation in 49 overweight, postmenopausal women. Participants were assigned in random order to 2 (130 g), 5 (287 g), and 10 (614 g) daily servings of fresh, greenhouse-grown vegetables for 3-wk intervals with a 4-wk washout period between treatments. Plasma total carotenoids significantly increased from 1.63 to 2.07 μmol/L with a dose of 2 vegetable servings, from 1.49 to 2.84 μmol/L with a dose of 5 vegetable servings, and from 1.40 to 4.42 μmol/L with a dose of 10 vegetable servings (pre-post paired ttests, all P < 0.001). The change during each feeding period increased with each dose level (P < 0.001). Urine concentrations of 8-isoprostane F2α, hexanoyl lysine, and serum high sensitivity C-reactive protein were not affected by any administered vegetable dose. In this variable-dose vegetable study, a dose-response for plasma carotenoids was demonstrated without significant change in oxidative stress and inflammation in overweight, postmenopausal women.
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Affiliation(s)
| | | | | | | | | | - Cynthia A. Thomson
- Department of Nutritional Sciences,Arizona Cancer Center, University of Arizona, Tucson, AZ,To whom correspondence should be addressed. E-mail:
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Okada H, Naito Y, Takagi T, Takaoka M, Oya-Ito T, Fukumoto K, Uchiyama K, Handa O, Kokura S, Nagano Y, Matsui H, Kato Y, Osawa T, Yoshikawa T. Detection of N-(hexanoyl)lysine in the tropomyosin 1 protein in N-methyl-N'-nitro-N-nitrosoguanidine-induced rat gastric cancer cells. J Clin Biochem Nutr 2011; 50:47-52. [PMID: 22247600 PMCID: PMC3246182 DOI: 10.3164/jcbn.11-39] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Accepted: 03/16/2011] [Indexed: 01/10/2023] Open
Abstract
Nε-(Hexanoyl)lysine, formed by the reaction of lysine with n-6 lipid hydroperoxide, is a lipid peroxidation marker during the initial stage of oxidative stress. The aim of the present study is to indentify Nε-(hexanoyl)lysine-modified proteins in neoplastic transformed gastric mucosal cells by N-methyl-N'-nitro-N-nitrosoguanidine, and to compare the levels of these proteins between gastric mucosal cells and normal gastric cells. Much greater fluorescence of 2-[6-(4'-hydroxy)phenoxyl-3H-xanthen-3-on-9-yl]benzoic acid, an index of the intracellular levels of reactive oxygen species, was observed for gastric mucosal cells compared to normal gastric cells. Nε-(Hexanoyl)lysine-modified proteins were detected by SDS-PAGE or two-dimensional electrophoresis and Western blotting using anti-Nε-(hexanoyl)lysine polyclonal antibody, and a protein band of between 30–40 kDa was clearly increased in gastric mucosal cells compared to normal gastric cells. Two Nε-(hexanoyl)lysine-modified protein spots in gastric mucosal cells were identified as the tropomyosin 1 protein by mass spectrometry using a MASCOT search. The existence of Nε-(hexanoyl)lysine modification in tropomyosin 1 was confirmed by Western blotting of SDS-PAGE-separated or two-dimensional electrophoresis-separated proteins as well as by the immunoprecipitation with anti-tropomyosin 1 antibody. These data indicate that Nε-(hexanoyl)lysine modification of tropomyosin 1 may be related to neoplastic transformation by N-methyl-N'-nitro-N-nitrosoguanidine in gastric epithelial cells.
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Affiliation(s)
- Hitomi Okada
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
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