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Truong VL, Jun M, Jeong WS. Role of resveratrol in regulation of cellular defense systems against oxidative stress. Biofactors 2018; 44:36-49. [PMID: 29193412 DOI: 10.1002/biof.1399] [Citation(s) in RCA: 233] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/01/2017] [Indexed: 12/15/2022]
Abstract
Resveratrol, a natural polyphenolic compound, is found in various kinds of fruits, plants, and their commercial products such as red wine. It has been demonstrated to exhibit a variety of health-promoting effects including prevention and/or treatment of cardiovascular diseases, inflammation, diabetes, neurodegeneration, aging, and cancer. Cellular defensive properties of resveratrol can be explained through its ability of either directly neutralizing reactive oxygen species/reactive nitrogen species (ROS/RNS) or indirectly upregulating the expression of cellular defensive genes. As a direct antioxidant agent, resveratrol scavenges diverse ROS/RNS as well as secondary organic radicals with mechanisms of hydrogen atom transfer and sequential proton loss electron transfer, thereby protecting cellular biomolecules from oxidative damage. Resveratrol also enhances the expression of various antioxidant defensive enzymes such as heme oxygenase 1, catalase, glutathione peroxidase, and superoxide dismutase as well as the induction of glutathione level responsible for maintaining the cellular redox balance. Such defenses could be achieved by regulating various signaling pathways including sirtuin 1, nuclear factor-erythroid 2-related factor 2 and nuclear factor κB. This review provides current understanding and information on the role of resveratrol in cellular defense system against oxidative stress. © 2017 BioFactors, 44(1):36-49, 2018.
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Affiliation(s)
- Van-Long Truong
- Department of Food and Life Sciences, College of BNIT, Inje University, Gimhae 50834, Korea
| | - Mira Jun
- Department of Food Science and Nutrition, Dong-A University, Busan 49315, Korea
| | - Woo-Sik Jeong
- Department of Food and Life Sciences, College of BNIT, Inje University, Gimhae 50834, Korea
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202
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Liang S, Were LM. Chlorogenic acid induced colored reactions and their effect on carbonyls, phenolic content, and antioxidant capacity in sunflower butter cookies. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2017.08.069] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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203
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Zhang H, Zheng J, Su H, Xia K, Jian S, Zhang M. Molecular Cloning and Functional Characterization of the Dehydrin ( IpDHN) Gene From Ipomoea pes-caprae. FRONTIERS IN PLANT SCIENCE 2018; 9:1454. [PMID: 30364314 PMCID: PMC6193111 DOI: 10.3389/fpls.2018.01454] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 09/12/2018] [Indexed: 05/02/2023]
Abstract
Dehydrin (DHN) genes can be rapidly induced to offset water deficit stresses in plants. Here, we reported on a dehydrin gene (IpDHN) related to salt tolerance isolated from Ipomoea pes-caprae L. (Convolvulaceae). The IpDHN protein shares a relatively high homology with Arabidopsis dehydrin ERD14 (At1g76180). IpDHN was shown to have a cytoplasmic localization pattern. Quantitative RT-PCR analyses indicated that IpDHN was differentially expressed in most organs of I. pes-caprae plants, and its expression level increased after salt, osmotic stress, oxidative stress, cold stress and ABA treatments. Analysis of the 974-bp promoter of IpDHN identified distinct cis-acting regulatory elements, including an MYB binding site (MBS), ABRE (ABA responding)-elements, Skn-1 motif, and TC-rich repeats. The induced expression of IpDHN in Escherichia coli indicated that IpDHN might be involved in salt, drought, osmotic, and oxidative stresses. We also generated transgenic Arabidopsis lines that over-expressed IpDHN. The transgenic Arabidopsis plants showed a significant enhancement in tolerance to salt/drought stresses, as well as less accumulation of hydrogen peroxide (H2O2) and the superoxide radical (O2 -), accompanied by increasing activity of the antioxidant enzyme system in vivo. Under osmotic stresses, the overexpression of IpDHN in Arabidopsis can elevate the expression of ROS-related and stress-responsive genes and can improve the ROS-scavenging ability. Our results indicated that IpDHN is involved in cellular responses to salt and drought through a series of pleiotropic effects that are likely involved in ROS scavenging and therefore influence the physiological processes of microorganisms and plants exposed to many abiotic stresses.
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Affiliation(s)
- Hui Zhang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jiexuan Zheng
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Huaxiang Su
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Kuaifei Xia
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Shuguang Jian
- Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Mei Zhang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- *Correspondence: Mei Zhang,
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204
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Uçaktürk SA, Alışık M, Uğur Ç, Elmaoğulları S, Mengen E, Erel Ö. Dynamic Thiol/Disulphide Homeostasis in Children and Adolescents with Non-Autoimmune Subclinical Hypothyroidism. Med Princ Pract 2018; 27:44-48. [PMID: 29402856 PMCID: PMC5968273 DOI: 10.1159/000487138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Accepted: 01/25/2018] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE To evaluate the thiol/disulphide homeostasis in children with non-autoimmune subclinical hypothyroidism (SHT). SUBJECTS AND METHODS Thiol/disulphide homeosta sis, involving native thiol (SH), disulphide (SS), and total thiol (SS + SH), was evaluated in 60 children and adolescents who were negative for thyroid auto-antibodies (anti-thyroid peroxidase, anti-thyroglobulin) and had a thyroid-stimulating hormone (TSH) value of > 5 mIU/L, and in 40 sex- and age-matched healthy control subjects who were negative for thyroid autoantibodies and had normal TSH levels. Lipid profiles and urine iodine levels were also determined. RESULTS SH (466 ± 32.8 vs. 462 ± 32.1 μmol/L p = 0.59), SH + SS (508 ± 34.0 vs. 506 ± 32.7 μmol/L, p = 0.81), SS (21 ± 5.5 vs. 22 ± 5.8 μmol/L, p = 0.41), SS/SH (4.5 ± 1.2 vs. 4.8 ± 1.3%, p = 0.36), SS/SH + SS (4.1 ± 1.0 vs. 4.3 ± 1.1%, p = 0.36) and SH/SH + SS (91 ± 2.1 vs. 91 ± 2.1%, p = 0.31) levels were similar in children with SHT and control subjects (p > 0.05). There was no difference between total cholesterol, triglyceride, and low-density lipoprotein levels in SHT patients and controls. No difference was detected between the patients with or without iodine deficiency in the SHT group in terms of thiol/disulphide homeostasis parameters. CONCLUSION The status of dynamic thiol/disulphide homeostasis did not change in children and adolescents with non-autoimmune SHT. Future studies are needed for the evaluation of oxidative stress in patients with long-standing non-autoimmune SHT.
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Affiliation(s)
- Seyit Ahmet Uçaktürk
- Department of Pediatric Endocrinology, Ankara Children's Hematology and Oncology Training Hospital, Ankara, Turkey
- *S. Ahmet Uçaktürk, Department of Pediatric Endocrinology, Ankara Children's Hematology and Oncology Training Hospital, Şehit Ömer Halisdemir Caddesi, Kurtdereli Sokak, No. 10, TR-06110 Ankara (Turkey), E-Mail
| | - Murat Alışık
- Department of Biochemistry, Atatürk Training and Research Hospital, Ankara, Turkey
| | - Çağatay Uğur
- Department of Child and Adolescent Psychiatry, Ankara, Turkey
| | - Selin Elmaoğulları
- Department of Pediatric Endocrinology, Ankara Children's Hematology and Oncology Training Hospital, Ankara, Turkey
| | - Eda Mengen
- Department of Pediatric Endocrinology, Ankara Children's Hematology and Oncology Training Hospital, Ankara, Turkey
| | - Özcan Erel
- Department of Biochemistry, Yıldırım Beyazıt University, School of Medicine, Ankara, Turkey
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205
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Wu Y, Shi A, Li Y, Zeng H, Chen X, Wu J, Fan X. A near-infrared xanthene fluorescence probe for monitoring peroxynitrite in living cells and mouse inflammation model. Analyst 2018; 143:5512-5519. [DOI: 10.1039/c8an01107a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A novel near-infrared xanthene fluorescence probe for monitoring peroxynitrite in vitro and in vivo.
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Affiliation(s)
- Yongquan Wu
- School of Chemistry and Chemical Engineering & Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou Jiangxi 341000
- P. R. China
| | - Aiping Shi
- School of Chemistry and Chemical Engineering & Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou Jiangxi 341000
- P. R. China
| | - Yuanyan Li
- School of Chemistry and Chemical Engineering & Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou Jiangxi 341000
- P. R. China
| | - Hong Zeng
- School of Chemistry and Chemical Engineering & Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou Jiangxi 341000
- P. R. China
| | - Xiaoyong Chen
- School of Chemistry and Chemical Engineering & Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou Jiangxi 341000
- P. R. China
| | - Jie Wu
- School of Chemistry and Chemical Engineering & Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou Jiangxi 341000
- P. R. China
| | - Xiaolin Fan
- School of Chemistry and Chemical Engineering & Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou Jiangxi 341000
- P. R. China
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206
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Indo HP, Hawkins CL, Nakanishi I, Matsumoto KI, Matsui H, Suenaga S, Davies MJ, St Clair DK, Ozawa T, Majima HJ. Role of Mitochondrial Reactive Oxygen Species in the Activation of Cellular Signals, Molecules, and Function. Handb Exp Pharmacol 2017; 240:439-456. [PMID: 28176043 DOI: 10.1007/164_2016_117] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Mitochondria are a major source of intracellular energy and reactive oxygen species in cells, but are also increasingly being recognized as a controller of cell death. Here, we review evidence of signal transduction control by mitochondrial superoxide generation via the nuclear factor-κB (NF-κB) and GATA signaling pathways. We have also reviewed the effects of ROS on the activation of MMP and HIF. There is significant evidence to support the hypothesis that mitochondrial superoxide can initiate signaling pathways following transport into the cytosol. In this study, we provide evidence of TATA signal transductions by mitochondrial superoxide. Oxidative phosphorylation via the electron transfer chain, glycolysis, and generation of superoxide from mitochondria could be important factors in regulating signal transduction, cellular homeostasis, and cell death.
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Affiliation(s)
- Hiroko P Indo
- Department of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, 890-8544, Japan. .,Department of Space Environmental Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, 890-8544, Japan. .,Graduate Center of Toxicology and Markey Cancer Center, University of Kentucky College of Medicine, Lexington, KY, 40506, USA.
| | - Clare L Hawkins
- The Heart Research Institute, 7 Eliza Street, Newtown, NSW, 2042, Australia. .,Sydney Medical School, University of Sydney, Sydney, NSW, 2006, Australia.
| | - Ikuo Nakanishi
- Quantitative RedOx Sensing Team (QRST), Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Ken-Ichiro Matsumoto
- Quantitative RedOx Sensing Team (QRST), Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Hirofumi Matsui
- Division of Gastroenterology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki Prefecture, 305-8575, Japan
| | - Shigeaki Suenaga
- Department of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, 890-8544, Japan
| | - Michael J Davies
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Blegdamsvej 3, Copenhagen, 2200, Denmark
| | - Daret K St Clair
- Graduate Center of Toxicology and Markey Cancer Center, University of Kentucky College of Medicine, Lexington, KY, 40506, USA
| | - Toshihiko Ozawa
- Division of Oxidative Stress Research, Showa Pharmaceutical University, Machida, Tokyo, 194-8543, Japan
| | - Hideyuki J Majima
- Department of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, 890-8544, Japan. .,Department of Space Environmental Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, 890-8544, Japan.
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207
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Post-illumination cellular effects of photodynamic treatment. PLoS One 2017; 12:e0188535. [PMID: 29200431 PMCID: PMC5714340 DOI: 10.1371/journal.pone.0188535] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 11/08/2017] [Indexed: 12/15/2022] Open
Abstract
Increased interest in clinical application of photodynamic therapy (PDT) in various medical fields poses a demand for better understanding of processes triggered by photo-treatment. Most of the work on PDT performed so far has focused on the immediate effects of photo-treatment. It is generally accepted that cellular damage occurs during light exposure and within a short period thereafter. If cells are not killed during the PDT, they might recover, depending on the extent of the photo-induced damage. Little is known, however, about the relationship between the properties of photosensitizers (PSs) and the delayed consequences of PDT. The aim of this work was to investigate cellular responses to sub-lethal photodynamic treatment and how toxicogenic potency may be affected by molecular features of the PS. Results demonstrated that for cationic porphyrin-based PSs, lipophilicity is the main factor determining the fate of the cells in the 24-hour post-illumination period. PSs with amphiphilic properties initiated oxidative reactions that continued in the dark, long after light exposure, and caused suppression of metabolism and loss of cell viability with concomitant changes in electrophoretic mobility of proteins, including caspases. Apoptotic activity was not stimulated in the post-illumination period. This study demonstrated that in PDT mediated by amphiphilic cationic metalloporphyrin PSs, even when immediate photo-damage is relatively mild, destructive oxidative processes initiated during PDT continue in the absence of light to substantially impair metabolism, and that post-illumination protein modification may modify utilization of cell death pathways.
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208
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Wang J, Cao B, Zhao H, Feng J. Emerging Roles of Ganoderma Lucidum in Anti-Aging. Aging Dis 2017; 8:691-707. [PMID: 29344411 PMCID: PMC5758346 DOI: 10.14336/ad.2017.0410] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 04/10/2017] [Indexed: 12/25/2022] Open
Abstract
Ganoderma lucidum is a white-rot fungus that has been viewed as a traditional Chinese tonic for promoting health and longevity. It has been revealed that several extractions from Ganoderma lucidum, such as Ethanol extract, aqueous extract, mycelia extract, water soluble extract of the culture medium of Ganoderma lucidum mycelia, Ganodermasides A, B, C, D, and some bioactive components of Ganoderma lucidum, including Reishi Polysaccharide Fraction 3, Ganoderma lucidum polysaccharides I, II, III, IV, Ganoderma lucidum peptide, Ganoderma polysaccharide peptide, total G. lucidum triterpenes and Ganoderic acid C1 could exert lifespan elongation or related activities. Although the use of Ganoderma lucidum as an elixir has been around for thousands of years, studies revealing its effect of lifespan extension are only the tip of the iceberg. Besides which, the kinds of extractions or components being comfrimed to be anti-aging are too few compared with the large amounts of Ganoderma lucidum extractions or constituients being discovered. This review aims to lay the ground for fully elucidating the potential mechanisms of Ganoderma lucidum underlying anti-aging effect and its clinical application.
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Affiliation(s)
- Jue Wang
- Department of Neurology, Shengjing Hospital, China Medical University, Shenyang, 110004, China
- Cerebrovascular Diseases Research Institute, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China
| | - Bin Cao
- Department of Neurology, Shengjing Hospital, China Medical University, Shenyang, 110004, China
| | - Haiping Zhao
- Cerebrovascular Diseases Research Institute, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China
| | - Juan Feng
- Department of Neurology, Shengjing Hospital, China Medical University, Shenyang, 110004, China
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209
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Bódi B, Tóth EP, Nagy L, Tóth A, Mártha L, Kovács Á, Balla G, Kovács T, Papp Z. Titin isoforms are increasingly protected against oxidative modifications in developing rat cardiomyocytes. Free Radic Biol Med 2017; 113:224-235. [PMID: 28943453 DOI: 10.1016/j.freeradbiomed.2017.09.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 09/15/2017] [Accepted: 09/18/2017] [Indexed: 12/18/2022]
Abstract
During the perinatal adaptation process N2BA titin isoforms are switched for N2B titin isoforms leading to an increase in cardiomyocyte passive tension (Fpassive). Here we attempted to reveal how titin isoform composition and oxidative insults (i.e. sulfhydryl (SH)-group oxidation or carbonylation) influence Fpassive of left ventricular (LV) cardiomyocytes during rat heart development. Moreover, we also examined a hypothetical protective role for titin associated small heat shock proteins (sHSPs), Hsp27 and αB-crystallin in the above processes. Single, permeabilized LV cardiomyocytes of the rat (at various ages following birth) were exposed either to 2,2'-dithiodipyridine (DTDP) to provoke SH-oxidation or Fenton reaction reagents (iron(II), hydrogen peroxide (H2O2), ascorbic acid) to induce protein carbonylation of cardiomyocytes in vitro. Thereafter, cardiomyocyte force measurements for Fpassive determinations and Western immunoblot assays were carried out for the semiquantitative determination of oxidized SH-groups or carbonyl-groups of titin isoforms and to monitor sHSPs' expressions. DTDP or Fenton reagents increased Fpassive in 0- and 7-day-old rats to relatively higher extents than in 21-day-old and adult animals. The degrees of SH-group oxidation or carbonylation declined with cardiomyocyte age to similar extents for both titin isoforms. Moreover, the above characteristics were mirrored by increasing levels of HSP27 and αB-crystallin expressions during cardiomyocyte development. Our data implicate a gradual build-up of a protective mechanism against titin oxidation through the upregulation of HSP27 and αB-crystallin expressions during postnatal cardiomyocyte development.
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Affiliation(s)
- Beáta Bódi
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Enikő Pásztorné Tóth
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - László Nagy
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Attila Tóth
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary; HAS-UD Vascular Biology and Myocardial Pathophysiology Research Group, Hungarian Academy of Sciences, Debrecen, Hungary
| | - Lilla Mártha
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Árpád Kovács
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - György Balla
- HAS-UD Vascular Biology and Myocardial Pathophysiology Research Group, Hungarian Academy of Sciences, Debrecen, Hungary; Department of Pediatrics, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Tamás Kovács
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zoltán Papp
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary; HAS-UD Vascular Biology and Myocardial Pathophysiology Research Group, Hungarian Academy of Sciences, Debrecen, Hungary.
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211
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Seraphim DCC, Punaro GR, Fernandes TDO, Ginoza M, Lopes GS, Higa EMS. Assessment of fructose overload in the metabolic profile and oxidative/nitrosative stress in the kidney of senescent female rats. Exp Gerontol 2017; 99:53-60. [PMID: 28939527 DOI: 10.1016/j.exger.2017.09.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 09/16/2017] [Accepted: 09/18/2017] [Indexed: 11/27/2022]
Abstract
The aging process is a complex phenomenon that leads the body to several changes, affecting its integrity and resulting in chronic pathologies, which compromises health and quality of life of elderly people. Animals supplemented with fructose have been used as an experimental model for induction of insulin resistance. The objective of this study was to evaluate the metabolic effects and the levels of oxidative/nitrosative stress in the kidney of senescent rats with a high fructose intake. The animals were allocated into 4 groups: young control (Y), aged control (A), young fructose (YF) and aged fructose (AF). Groups Y and A received water and groups YF and AF received fructose (100g/L) in the water, both ad libitum. After 12weeks of high fructose intake, the animals were sacrificed to collect their kidneys, blood and the thoracic aorta. The results are presented as mean±SE, analyzed by the One-Way ANOVA test with Newman-Keuls post-test; significant at p<0.05. The fructose overload caused metabolic dysfunctions and insulin resistance, confirming the efficacy of the chosen model. In this study, we observed a body weight gain in the studied groups (except in the elderly fructose group), and an increase in general caloric intake, diuresis and adipose tissue; insulin resistance, increased fasting glucose, triglycerides and cholesterol in the fructose groups. We also found a loss of renal function, increased oxidative/nitrosative stress and inflammation, and a reduction of antioxidants and a lower vasodepressor response in the studied groups, especially those who consumed fructose. In summary, our data showed that aging or high fructose intake contributed to the increase of oxidative/nitrosative stress in animals, demonstrating that at the dose and the period of fructose treatment utilized in this study, fructose was not able to aggravate several aspects which were already altered by aging. We believe that the high fructose intake simulates most of the effects of aging, and this understanding would be useful to prevent or minimize many of the alterations caused by this condition.
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Affiliation(s)
- Deborah Chianelli Costalonga Seraphim
- Translational Medicine, Department of Medicine, Universidade Federal de Sao Paulo, Sao Paulo, Brazil; Laboratory of Nitric Oxide and Oxidative Stress, Nephrology Division, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
| | - Giovana Rita Punaro
- Nephrology Division, Universidade Federal de Sao Paulo, Sao Paulo, Brazil; Laboratory of Nitric Oxide and Oxidative Stress, Nephrology Division, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
| | | | - Milton Ginoza
- Nephrology Division, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
| | | | - Elisa Mieko Suemitsu Higa
- Translational Medicine, Department of Medicine, Universidade Federal de Sao Paulo, Sao Paulo, Brazil; Nephrology Division, Universidade Federal de Sao Paulo, Sao Paulo, Brazil; Emergency Division, Universidade Federal de Sao Paulo, Sao Paulo, Brazil; Laboratory of Nitric Oxide and Oxidative Stress, Nephrology Division, Universidade Federal de Sao Paulo, Sao Paulo, Brazil.
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212
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Krämer AC, Torreggiani A, Davies MJ. Effect of Oxidation and Protein Unfolding on Cross-Linking of β-Lactoglobulin and α-Lactalbumin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:10258-10269. [PMID: 29096436 DOI: 10.1021/acs.jafc.7b03839] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Oxidation and heat treatment can initiate changes in the amino acid composition, structure, solubility, hydrophobicity, conformation, function, and susceptibility to proteolysis of proteins. These can result in adverse consequences for mammals, plants, foodstuffs, and pharmaceuticals. This study investigated whether and how individual or combined treatment with heat, a commonly encountered factor in industrial processing, and H2O2 alters the structure and composition of two major milk whey proteins, α-lactalbumin and β-lactoglobulin, and mixtures of these. Thermal treatment induced reducible cross-links in isolated β-lactoglobulin, but not isolated α-lactalbumin under the conditions employed. Cross-linking occurred at lower temperatures and to a greater extent in the presence of low concentrations of H2O2. H2O2 did not induce cross-linking in the absence of heat. Mixtures of α-lactalbumin and β-lactoglobulin showed similar behavior, except that mixed α-lactalbumin-β-lactoglobulin dimers were detected. Cross-linking was associated with formation of sulfenic acids (RS-OH species), oxidation of methionine residues, cleavage of disulfide bonds in α-lactalbumin, altered conformation of disulfide bonds in β-lactoglobulin, alterations in the fluorescence intensity and maximum emission wavelength of endogenous tryptophan residues, and binding of the hydrophobic probe 8-anilinonaphthalenesulfonate. These data are consistent with increased unfolding and subsequent aggregation of the protein, with these changes being maximized in the presence of both heat and H2O2. The enhanced aggregation detected with H2O2 is consistent with additional pathways to aggregation above that induced by heat alone. These mechanistic insights provide potential strategies for modulating the extent and nature of protein modification induced by thermal and oxidant treatment.
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Affiliation(s)
- Anna C Krämer
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen , Copenhagen 2200, Denmark
| | - Armida Torreggiani
- Istituto per la Sintesi e la Fotoreattivita, ISOF-CNR, Area della Ricerca di Bologna , Via P. Gobetti 101, 40129 Bologna, Italy
| | - Michael J Davies
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen , Copenhagen 2200, Denmark
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213
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Chowtivannakul P, Srichaikul B, Talubmook C. Hypoglycemic and Hypolipidemic Effects of Seed Extract from Antidesma bunius (L.) Spreng in Streptozotocin-induced Diabetic Rats. Pak J Biol Sci 2017; 19:211-218. [PMID: 29023025 DOI: 10.3923/pjbs.2016.211.218] [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] [Indexed: 11/15/2022]
Abstract
BACKGROUND Antidesma bunius (L.) Spreng has been reported to possess various beneficial medicinal properties. Scientific information about this plant is limited. This study was therefore, designed to determine hypoglycaemic and hypolipidemic effects of ethanol seed extract from A. bunius (ABSE). Antioxidant activity and also acute toxicity were conducted. METHODOLOGY The hypoglycaemic and hypolipidemic effects were studied by oral giving ABSE at a dose of 250 mg kg -1 to streptozotocin-induced diabetic rats daily for 6 weeks. Antioxidant activity was studied using DPPH assay. The ABSE at the doses of 500, 1000, 1500 and 2000 mg kg -1 were employed in the acute toxicity study. RESULTS The results revealed that ABSE significantly (p<0.05) reduced the blood glucose level and recovered the pathology of hematological values, but significantly (p<0.05) increased the body weight and slightly increased serum insulin of the diabetic rats. However, ABSE recovered pathology of hematological values, but affected renal and hepatic functions in the treated rats by producing an alteration of creatinine, albumin, total protein, BUN and ALP. Interestingly, ABSE increased WBC and HDL, but reduced CHOL, LDL and TG both in normal and diabetic ABSE treated rats. The ABSE possessed relatively low antioxidant activity with IC50 of 2174±14.24 mg mL -1 compared to vitamin C (1.48±0.07 μg mL -1). Fortunately, ABSE did not produce any symptoms of acute toxicity and mortality in the rats. CONCLUSION The ethanol seed extract from A. bunius possesses hypoglycemic and hypolipidemic effects. The ABSE also recovered the pathology of the hematology but may cause renal dysfunction in the diabetic rats. The hypoglycemic and hypolipidemic effects are likely due to its antioxidant and insulin secretion activities.
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Affiliation(s)
- Pichaya Chowtivannakul
- Department of Biology, Faculty of Science, Mahasarakham University, 44150 Maha Sarakham, Thailand
| | - Buavaroon Srichaikul
- Faculty of Public Health, Mahasarakham University, 44150 Maha Sarakham, Thailand
| | - Chusri Talubmook
- Department of Biology, Faculty of Science, Mahasarakham University, 44150 Maha Sarakham, Thailand
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214
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Unal S, Ulubas Isik D, Bas AY, Erol S, Arifoglu İ, Alisik M, Erel O, Demirel N. Evaluation of dynamic thiol-disulfide homeostasis in very low-birth-weighted preterms. J Matern Fetal Neonatal Med 2017; 32:1111-1116. [PMID: 29092682 DOI: 10.1080/14767058.2017.1400007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Thiols are organic compounds containing sulfhydryl groups which exert antioxidant effects via dynamic thiol-disulfide homeostasis. The shift towards disulfides indicates the presence of oxidative environment. Thiol-disulfide homeostasis has not been evaluated in neonates. We aimed to evaluate dynamic thiol-disulfide homeostasis in preterm infants. METHODS Preterm infants with birth weight less than 1500 g (25-32 weeks of gestation) were included. Infants with major congenital anomaly, perinatal asphyxia, twin to twin transfusion and infants who were mechanically ventilated and nil by mouth for more than 3 days or fed with formula, had intraventricular hemorrhage ≥ grade 2 or sepsis, received blood/blood product transfusion or inotrope treatment and developed bronchopulmonary dysplasia or retinopathy of prematurity (≥ stage 3), and died were excluded thereafter. Serum thiol-disulfide homeostasis was evaluated for three times: (Baseline, first week, third week). Serum native thiol, total thiol and disulfide were measured (µmol/Lt), disulfide:native thiol, disulfide:total thiol, and native thiol:total thiol ratios were calculated. Wilcoxon's test was used to analyze the significance of change in measurements. Baseline results were analyzed for gender and mode of delivery. RESULTS Eighty preterm infants [1255 (1080-1415) grams] were included. Baseline values were native thiol: 209.54 ± 41.83 µmol/L; total thiol: 251.70 ± 45.82 µmol/L; disulfide: 21.08 ± 7.43 µmol/Lt; disulfide:native thiol: 10.49 ± 4.62; disulfide:total thiol: 8.45 ± 2.93; native thiol:total thiol: 83.10 ± 5.87. Thiol levels increased in each measurement, disulfide and disulfide/thiol ratios increased in the first week, decreased in the third week, ratio of native/total thiol decreased in the first week, increased in the third week. No effect of gender or mode of delivery on baseline thiol-disulfide homeostasis was detected. CONCLUSIONS The shift in the thiol-disulfide equilibrium towards disulfides in the first week can be attributed to subjection of infants to many oxidative insults. Furthermore, the thiol predominance in the third week could be explained by the decrease in oxidative events and increase in feeding as a supply of antioxidants. This study, displaying the levels of the dynamic thiol-disulfide homeostasis in preterm infants without obvious risks for increased oxidative stress, may provide acceptable range for thiol-disulfide homeostasis in recovering preterm infants.
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Affiliation(s)
- Sezin Unal
- a Department of Neonatology , Etlik Zubeyde Hanım Women's Health Teaching and Research Hospital , Ankara , Turkey
| | - Dilek Ulubas Isik
- a Department of Neonatology , Etlik Zubeyde Hanım Women's Health Teaching and Research Hospital , Ankara , Turkey
| | - Ahmet Yagmur Bas
- a Department of Neonatology , Etlik Zubeyde Hanım Women's Health Teaching and Research Hospital , Ankara , Turkey
| | - Sara Erol
- a Department of Neonatology , Etlik Zubeyde Hanım Women's Health Teaching and Research Hospital , Ankara , Turkey
| | - İlter Arifoglu
- a Department of Neonatology , Etlik Zubeyde Hanım Women's Health Teaching and Research Hospital , Ankara , Turkey
| | - Murat Alisik
- b Department of Clinical Biochemistry , Ankara Ataturk Education and Research Hospital , Ankara , Turkey
| | - Ozcan Erel
- c Department of Clinical Biochemistry , Yıldırım Beyazıt University Hospital , Ankara , Turkey
| | - Nihal Demirel
- a Department of Neonatology , Etlik Zubeyde Hanım Women's Health Teaching and Research Hospital , Ankara , Turkey
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215
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Okamura I, Park S, Han JH, Notsu S, Sugiyama H. A Combination of Visible-light Photoredox and Metal Catalysis for the Mannich-type Reaction of N-Aryl Glycine Esters. CHEM LETT 2017. [DOI: 10.1246/cl.170706] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Izumi Okamura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502
| | - Soyoung Park
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502
| | - Ji Hoon Han
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502
| | - Shunta Notsu
- Department of Industrial Chemistry, Faculty of Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501
| | - Hiroshi Sugiyama
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502
- Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida-Ushinomiyacho, Sakyo-ku, Kyoto 606-8501
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Hermenean A, Gheorghiu G, Stan MS, Herman H, Onita B, Ardelean DP, Ardelean A, Braun M, Zsuga M, Kéki S, Costache M, Dinischiotu A. Biochemical, Histopathological and Molecular Responses in Gills of Leuciscus cephalus Exposed to Metals. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2017; 73:607-618. [PMID: 28939958 DOI: 10.1007/s00244-017-0450-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 09/06/2017] [Indexed: 06/07/2023]
Abstract
Gills are major targets for acute metal toxicity in fish, due to their permanent contact with aquatic pollutants. To assess the effects of metals on gills of the Leuciscus cephalus (chub), fish individuals were collected from two sites in the Tur River, Romania, in upstream (site 1) and downstream (site 2) of a metal pollution source. Quantitative and hyperspectral analyses showed that Zn, Sr, and Fe concentrations were significantly higher in gills from site 2 compared with site 1. Malondialdehyde and advanced oxidation protein products levels increased 17 and 28%, respectively, whereas reduced glutathione level diminished significantly in the gills of fish collected from site 2 compared to site 1. The activities of superoxide dismutase, catalase, and glutathione-S-transferase increased significantly at 41, 21, and 28%, respectively. Proliferating cell nuclear antigen (PCNA) protein levels, as well as the amount of DNA damage, were significantly increased for site 2 compared with site 1. The induced oxidative stress generated hyperplasia, hypertrophy, and inflammation in the epithelial cells and apoptosis. Hence, this could suggest that gill cells have tried to counteract the oxidative stress-induced DNA fragmentation by PCNA up-regulation, but the PCNA expression decreased on longer time due to the low level of GSH, resulting in apoptosis.
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Affiliation(s)
- Anca Hermenean
- Department of Experimental and Applied Biology, Institute of Life Sciences, Vasile Goldis Western University of Arad, 86 Rebreanu, 310414, Arad, Romania.
| | | | - Miruna Silvia Stan
- Department of Biochemistry and Molecular Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095, Bucharest, Romania
| | - Hildegard Herman
- Department of Experimental and Applied Biology, Institute of Life Sciences, Vasile Goldis Western University of Arad, 86 Rebreanu, 310414, Arad, Romania
| | - Bianca Onita
- Department of Experimental and Applied Biology, Institute of Life Sciences, Vasile Goldis Western University of Arad, 86 Rebreanu, 310414, Arad, Romania
| | - Doru Puiu Ardelean
- Department of Experimental and Applied Biology, Institute of Life Sciences, Vasile Goldis Western University of Arad, 86 Rebreanu, 310414, Arad, Romania
| | - Aurel Ardelean
- Department of Experimental and Applied Biology, Institute of Life Sciences, Vasile Goldis Western University of Arad, 86 Rebreanu, 310414, Arad, Romania
| | - Mihály Braun
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Debrecen, 4032, Hungary
| | - Miklós Zsuga
- Department of Applied Chemistry, University of Debrecen, Debrecen, 4032, Hungary
| | - Sándor Kéki
- Department of Applied Chemistry, University of Debrecen, Debrecen, 4032, Hungary
| | - Marieta Costache
- Department of Biochemistry and Molecular Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095, Bucharest, Romania
| | - Anca Dinischiotu
- Department of Biochemistry and Molecular Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095, Bucharest, Romania
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217
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A highly sensitive and selective fluorimetric probe for intracellular peroxynitrite based on photoinduced electron transfer from ferrocene to carbon dots. Biosens Bioelectron 2017; 97:150-156. [DOI: 10.1016/j.bios.2017.05.054] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/16/2017] [Accepted: 05/30/2017] [Indexed: 12/30/2022]
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218
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Leinisch F, Mariotti M, Rykaer M, Lopez-Alarcon C, Hägglund P, Davies MJ. Peroxyl radical- and photo-oxidation of glucose 6-phosphate dehydrogenase generates cross-links and functional changes via oxidation of tyrosine and tryptophan residues. Free Radic Biol Med 2017; 112:240-252. [PMID: 28756310 DOI: 10.1016/j.freeradbiomed.2017.07.025] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/11/2017] [Accepted: 07/25/2017] [Indexed: 02/05/2023]
Abstract
Protein oxidation is a frequent event as a result of the high abundance of proteins in biological samples and the multiple processes that generate oxidants. The reactions that occur are complex and poorly understood, but can generate major structural and functional changes on proteins. Current data indicate that pathophysiological processes and multiple human diseases are associated with the accumulation of damaged proteins. In this study we investigated the mechanisms and consequences of exposure of the key metabolic enzyme glucose-6-phosphate dehydrogenase (G6PDH) to peroxyl radicals (ROO•) and singlet oxygen (1O2), with particular emphasis on the role of Trp and Tyr residues in protein cross-linking and fragmentation. Cross-links and high molecular mass aggregates were detected by SDS-PAGE and Western blotting using specific antibodies. Amino acid analysis has provided evidence for Trp and Tyr consumption and formation of oxygenated products (diols, peroxides, N-formylkynurenine, kynurenine) from Trp, and di-tyrosine (from Tyr). Mass spectrometric data obtained after trypsin-digestion in the presence of H216O and H218O, has allowed the mapping of specific cross-linked residues and their locations. These data indicate that specific Tyr-Trp and di-Tyr cross-links are formed from residues that are proximal and surface-accessible, and that the extent of Trp oxidation varies markedly between sites. Limited modification at other residues is also detected. These data indicate that Trp and Tyr residues are readily modified by ROO• and 1O2 with this giving products that impact significantly on protein structure and function. The formation of such cross-links may help rationalize the accumulation of damaged proteins in vivo.
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Affiliation(s)
- Fabian Leinisch
- Dept. of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Michele Mariotti
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Martin Rykaer
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Camilo Lopez-Alarcon
- Departamento de Química Física, Facultad de Química, Pontificia Universidad Catolica de Chile, Avda. Vicuña Mackenna 4860, Santiago, Chile
| | - Per Hägglund
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Michael J Davies
- Dept. of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark.
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219
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A single cysteine post-translational oxidation suffices to compromise globular proteins kinetic stability and promote amyloid formation. Redox Biol 2017; 14:566-575. [PMID: 29132128 PMCID: PMC5684091 DOI: 10.1016/j.redox.2017.10.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/24/2017] [Accepted: 10/29/2017] [Indexed: 12/22/2022] Open
Abstract
Oxidatively modified forms of proteins accumulate during aging. Oxidized protein conformers might act as intermediates in the formation of amyloids in age-related disorders. However, it is not known whether this amyloidogenic conversion requires an extensive protein oxidative damage or it can be promoted just by a discrete, localized post-translational modification of certain residues. Here, we demonstrate that the irreversible oxidation of a single free Cys suffices to severely perturb the folding energy landscape of a stable globular protein, compromise its kinetic stability, and lead to the formation of amyloids under physiological conditions. Experiments and simulations converge to indicate that this specific oxidation-promoted protein aggregation requires only local unfolding. Indeed, a large scale analysis indicates that many cellular proteins are at risk of undergoing this kind of deleterious transition; explaining how oxidative stress can impact cell proteostasis and subsequently lead to the onset of pathological states. The population of aggregation-prone states by natural proteins does not require their extensive oxidation. A single residue irreversible oxidation suffices to promote the formation of amyloid fibrils. Under oxidative stress, many cellular proteins are at risk of aggregating into toxic species.
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220
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Venugopal V, Gopakumar K. Shellfish: Nutritive Value, Health Benefits, and Consumer Safety. Compr Rev Food Sci Food Saf 2017; 16:1219-1242. [PMID: 33371588 DOI: 10.1111/1541-4337.12312] [Citation(s) in RCA: 129] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 08/30/2017] [Accepted: 09/01/2017] [Indexed: 12/14/2022]
Abstract
Shellfish is a major component of global seafood production. Specific items include shrimp, lobsters, oysters, mussels, scallops, clams, crabs, krill, crayfish, squid, cuttlefish, snails, abalone, and others. Shellfish, in general, contain appreciable quantities of digestible proteins, essential amino acids, bioactive peptides, long-chain polyunsaturated fatty acids, astaxanthin and other carotenoids, vitamin B12 and other vitamins, minerals, including copper, zinc, inorganic phosphate, sodium, potassium, selenium, iodine, and also other nutrients, which offer a variety of health benefits to the consumer. Although shellfish are generally safe for consumption, their exposure to diverse habitats, the filter feeding nature of shellfish such as oysters, clams, and mussels, and unhealthy farming and handling practices may occasionally entail health risks because of possible presence of various hazards. These hazards include pathogenic organisms, parasites, biotoxins, industrial and environmental pollutants, heavy metals, process-related additives such as antibiotics and bisulfite, and also presence of allergy-causing compounds in their bodies. Most of the hazards can be addressed by appropriate preventive measures at various stages of harvesting, farming, processing, storage, distribution, and consumption. Furthermore, consumer safety of shellfish and other seafood items is strictly monitored by international, governmental, and local public health organizations. This article highlights the nutritional value and health benefits of shellfish items and points out the various control measures to safeguard consumer safety with respect to the products.
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Affiliation(s)
- Vazhiyil Venugopal
- Dept. of Food Science and Technology, Kerala Univ. of Fisheries and Ocean Sciences (KUFOS), Kochi, Kerala 682506, India
| | - Kumarapanicker Gopakumar
- Dept. of Food Science and Technology, Kerala Univ. of Fisheries and Ocean Sciences (KUFOS), Kochi, Kerala 682506, India
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221
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Eukaryotic translation initiation factor 2 subunit α (eIF2α) inhibitor salubrinal attenuates paraquat-induced human lung epithelial-like A549 cell apoptosis by regulating the PERK-eIF2α signaling pathway. Toxicol In Vitro 2017; 46:58-65. [PMID: 28986289 DOI: 10.1016/j.tiv.2017.10.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 08/16/2017] [Accepted: 10/02/2017] [Indexed: 11/21/2022]
Abstract
Paraquat (PQ), as one of the most widely used herbicides in the world, can cause severe lung damage in humans and animals. This study investigated the underlying molecular mechanism of PQ-induced lung cell damage and the protective role of salubrinal. Human lung epithelial-like A549 cells were treated with PQ for 24h and were pre-incubated with salubrinal for 2h, followed by 500μM of PQ treatment. Silencing eIF2α gene of the A549 cells with siRNA interference method was conducted. Cell morphology, cell viability, apoptosis and caspase-3 activity were assessed by different assays accordingly thereafter. The expression of PERK, p-PERK, ATF6, c-ATF6, IRE1α, p-IRE1α, CHOP, GRP78, p-eIF2α and β-actin was assayed by western blot. The data showed that PQ significantly reduced A549 cell viability, changed cell morphology, induced cell apoptosis and significantly upregulated the levels of GRP78, CHOP, p-PERK, c-ATF6 and p-IRE1α. However, 30μM salubrinal could attenuate the effects of PQ on damages to A549 cells through upregulating p-eIF2α. In contrast, knocking down eIF2α gene inhabited the effects of salubrinal. These results suggest that PQ-induced A549 cell apoptosis involved endoplasmic reticulum (ER) stress, specially the PERK-eIF2α pathway. Salubrinal attenuated A549 cells from PQ-induced damages through regulation of the PERK-eIF2α signaling.
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222
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San Segundo M, Guerrero I, Correa A. Co-Catalyzed C(sp3)–H Oxidative Coupling of Glycine and Peptide Derivatives. Org Lett 2017; 19:5288-5291. [DOI: 10.1021/acs.orglett.7b02567] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marcos San Segundo
- Department of Organic Chemistry-I, University of the Basque Country (UPV-EHU), Joxe Mari Korta R&D Center, Av. Tolosa 72, 20018 Donostia-San Sebastián, Spain
| | - Itziar Guerrero
- Department of Organic Chemistry-I, University of the Basque Country (UPV-EHU), Joxe Mari Korta R&D Center, Av. Tolosa 72, 20018 Donostia-San Sebastián, Spain
| | - Arkaitz Correa
- Department of Organic Chemistry-I, University of the Basque Country (UPV-EHU), Joxe Mari Korta R&D Center, Av. Tolosa 72, 20018 Donostia-San Sebastián, Spain
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223
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Yamaguchi Y, Usuki S, Kanai Y, Yamatoya K, Suzuki N, Katsumata KI, Terashima C, Suzuki T, Fujishima A, Sakai H, Kudo A, Nakata K. Selective Inactivation of Bacteriophage in the Presence of Bacteria by Use of Ground Rh-Doped SrTiO 3 Photocatalyst and Visible Light. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31393-31400. [PMID: 28872820 DOI: 10.1021/acsami.7b07786] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Bacteriophage (denoted as phage) infection in the bacterial fermentation industry is a major problem, leading to the loss of fermented products such as alcohol and lactic acid. Currently, the prevention of phage infection is limited to biological approaches, which are difficult to apply in an industrial setting. Herein, we report an alternative chemical approach using ground Rh-doped SrTiO3 (denoted as g-STO:Rh) as a visible-light-driven photocatalyst. The g-STO:Rh showed selective inactivation of phage without bactericidal activity when irradiated with visible light (λ > 440 nm). After inactivation, the color of g-STO:Rh changed from gray to purple, suggesting that the Rh valence state partially changed from 3+ to 4+ induced by photocatalysis, as confirmed by diffuse reflectance spectroscopy. To study the effect of the Rh4+ ion on phage inactivation under visible-light irradiation, the survival rate of phage for g-STO:Rh was compared to that for ground Rh,Sb-codoped SrTiO3 (denoted as g-STO:Rh,Sb), where the change of Rh valence state from 3+ to 4+ is almost suppressed under visible-light irradiation due to charge compensation by the Sb5+ ion. Only g-STO:Rh effectively inactivated phage, which indicated that Rh4+ ion induced by photocatalysis particularly contributed to phage inactivation under visible-light irradiation. These results suggested that g-STO:Rh has potential as an antiphage material in bacterial fermentation.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Akihiko Kudo
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science , 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
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224
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Gruber N, Orelli LR, Cipolletti R, Stipa P. Amidinoquinoxaline N-oxides: spin trapping of O- and C-centered radicals. Org Biomol Chem 2017; 15:7685-7695. [PMID: 28872168 DOI: 10.1039/c7ob01387f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Amidinoquinoxaline N-oxides represent a novel family of heterocyclic spin traps. In this work, their ability to trap O- and C-centered radicals was tested using selected derivatives with different structural modifications. All the studied nitrones were able to trap radicals forming persistent spin adducts, also in the case of OH and OOH radicals which are of wide biological interest as examples of ROS. The stability of the adducts was mainly attributed to the wide delocalization of the unpaired electron over the whole quinoxaline moiety. The nitroxide spectral parameters (hfccs and g-factors) were analyzed and the results were supported by DFT calculations. The N-19 hfccs and g-factors were characteristic of each aminoxyl and could aid in the identification of the trapped radical. The enhanced stability of the OH adducts under the employed reaction conditions could be ascribed to their possible stabilization by IHBs with two different acceptors: the N-O˙ moiety or the amidine functionality. DFT calculations indicate that the preferred IHB is strongly conditioned by the amidine ring size. While five membered homologues show a clear preference for the IHB with the N-O˙ group, in six membered derivatives this stabilizing interaction is preferentially established with the amidine nitrogen as an IHB acceptor.
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Affiliation(s)
- Nadia Gruber
- SIMAU Dept. - Chemistry Division, Università Politecnica delle Marche, Via Brecce Bianche 12, Ancona (I-60131), Italy.
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225
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Espinosa Ruiz C, Cabrera L, López-Jiménez JÁ, Zamora S, Pérez-Llamas F. Effects of long-term ingestion of white tea on oxidation produced by aging and acute oxidative damage in rats. J Physiol Biochem 2017; 74:171-177. [DOI: 10.1007/s13105-017-0591-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 09/07/2017] [Indexed: 01/10/2023]
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226
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Yang Y, Zhang H, Yan B, Zhang T, Gao Y, Shi Y, Le G. Health Effects of Dietary Oxidized Tyrosine and Dityrosine Administration in Mice with Nutrimetabolomic Strategies. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:6957-6971. [PMID: 28742334 DOI: 10.1021/acs.jafc.7b02003] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This study aims to investigate the health effects of long-term dietary oxidized tyrosine (O-Tyr) and its main product (dityrosine) administration on mice metabolism. Mice received daily intragastric administration of either O-Tyr (320 μg/kg body weight), dityrosine (Dityr, 320 μg/kg body weight), or saline for consecutive 6 weeks. Urine and plasma samples were analyzed by NMR-based metabolomics strategies. Body weight, clinical chemistry, oxidative damage indexes, and histopathological data were obtained as complementary information. O-Tyr and Dityr exposure changed many systemic metabolic processes, including reduced choline bioavailability, led to fat accumulation in liver, induced hepatic injury, and renal dysfunction, resulted in changes in gut microbiota functions, elevated risk factor for cardiovascular disease, altered amino acid metabolism, induced oxidative stress responses, and inhibited energy metabolism. These findings implied that it is absolutely essential to reduce the generation of oxidation protein products in food system through improving modern food processing methods.
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Affiliation(s)
- Yuhui Yang
- The Laboratory of Food Nutrition and Functional Factors, School of Food Science and Technology, Jiangnan University , Wuxi, Jiangsu 214122, China
| | - Hui Zhang
- The Laboratory of Food Nutrition and Functional Factors, School of Food Science and Technology, Jiangnan University , Wuxi, Jiangsu 214122, China
| | - Biao Yan
- The Laboratory of Food Nutrition and Functional Factors, School of Food Science and Technology, Jiangnan University , Wuxi, Jiangsu 214122, China
| | - Tianyu Zhang
- The Laboratory of Food Nutrition and Functional Factors, School of Food Science and Technology, Jiangnan University , Wuxi, Jiangsu 214122, China
| | - Ying Gao
- The Laboratory of Food Nutrition and Functional Factors, School of Food Science and Technology, Jiangnan University , Wuxi, Jiangsu 214122, China
| | - Yonghui Shi
- The Laboratory of Food Nutrition and Functional Factors, School of Food Science and Technology, Jiangnan University , Wuxi, Jiangsu 214122, China
- The State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University , Wuxi, Jiangsu 214122, China
| | - Guowei Le
- The Laboratory of Food Nutrition and Functional Factors, School of Food Science and Technology, Jiangnan University , Wuxi, Jiangsu 214122, China
- The State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University , Wuxi, Jiangsu 214122, China
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Functional characterization of KS-type dehydrin ZmDHN13 and its related conserved domains under oxidative stress. Sci Rep 2017; 7:7361. [PMID: 28779129 PMCID: PMC5544677 DOI: 10.1038/s41598-017-07852-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 07/03/2017] [Indexed: 11/08/2022] Open
Abstract
Dehydrins belong to the group 2 family LEA (Late Embryogenesis Abundant) proteins, which are up-regulated in most plants during cold and drought stress. According to the number and order of the Y-, S- and K-segments, dehydrins are classified into five subclasses: YnSKn, YnKn, SKn, Kn and KnS. Here, the maize (Zea mays L.) KS-type dehydrin gene, ZmDHN13, was identified and later characterized. Expression profiling demonstrated that ZmDHN13 was constitutively expressed, but its expression was also altered by high osmosis, low temperature, oxidative stress and abscisic acid (ABA). Furthermore, the roles of the three conserved segments in phosphorylation, localization, binding metal ions and physiological functions were explored. ZmDHN13 was mainly localized in the nucleus, depending on phosphorylation status. Additional studies indicated that ZmDHN13 could be phosphorylated by CKII (casein kinase II), when the NLS (nuclear localization signal) segment and the S-segment were core sequences. The overexpression of ZmDHN13 enhanced transgenic tobacco tolerance to oxidative stress, and the three conserved segments exhibited a cooperative effect in response to environmental stresses in vivo.
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228
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Lei K, Sun M, Du L, Zhang X, Yu H, Wang S, Hayat T, Alsaedi A. Sensitive determination of endogenous hydroxyl radical in live cell by a BODIPY based fluorescent probe. Talanta 2017; 170:314-321. [DOI: 10.1016/j.talanta.2017.04.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 03/27/2017] [Accepted: 04/01/2017] [Indexed: 12/22/2022]
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Cao JX, Zhou CY, Wang Y, Sun YY, Pan DD. The effect of oxidation on the structure of G-actin and its binding ability with aroma compounds in carp grass skeletal muscle. Food Chem 2017; 240:346-353. [PMID: 28946282 DOI: 10.1016/j.foodchem.2017.07.068] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 06/04/2017] [Accepted: 07/13/2017] [Indexed: 11/19/2022]
Abstract
To investigate the influence of oxidative modifications of G-actin on its binding ability with aroma compounds, the influence of H2O2 treatments on G-actin structure and the absorption for alcohols and aldehydes was investigated. Raman spectroscopy and scanning electron microscopy were used to evaluate structural changes of G-actin; GC-MS was used to analyze the binding with alcohols and aldehydes. Results showed that 0-5mM H2O2 enhanced the absorption of G-actin toward alcohols involved in the formation of hydrogen bonds by increasing α-helix and carbonyl values. 0-1mM H2O2 caused the release of aldehydes with decreased sulfhydryl sites. 1-20mM H2O2 increased the retention of aldehydes, due to the increased hydrophobic sites by G-actin rebuilding and aggregating. The aggregated G-actin favoured the hydrophobic interactions with aroma compounds, forming the protein-aroma compound complex, thus enhancing the resultant binding ability, as evidenced by scanning electron microscopy and GC/MS analysis.
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Affiliation(s)
- Jin-Xuan Cao
- Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
| | - Chang-Yu Zhou
- Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
| | - Ying Wang
- Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
| | - Yang-Ying Sun
- Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
| | - Dao-Dong Pan
- Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China; Food Science & Nutrition Department of Nanjing Normal University, Nanjing 210097, China.
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230
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Zhou L, Zhang Y, Zhao C, Lin H, Wang Z, Wu F. Structural and functional properties of rice bran protein oxidized by peroxyl radicals. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2017. [DOI: 10.1080/10942912.2017.1352596] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Linyi Zhou
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Yao Zhang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Chengbin Zhao
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Haijing Lin
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Zhongjiang Wang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Fei Wu
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, China
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231
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Jiang Z, Yuan X, Yao K, Li X, Zhang X, Mu Z, Jiang L, Hou J. Laccase-aided modification: Effects on structure, gel properties and antioxidant activities of α-lactalbumin. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.02.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Abstract
OBJECTIVES The aim of the work was the development of a simple method for measuring the plasma prothrombin carbonylation and the study the impact of prothrombin and fibrinogen oxidation on the rate of plasma clotting. METHODS A new method was based on the ability of prothrombin to be adsorbed by the barium sulfate. It consists of four steps: prothrombin mixing with the water suspension of BaSO4; reaction of 2,4-dinitrophenylhydrazine with the BaSO4-bound prothrombin; desorption of prothrombin-2,4-dinitrophenylhydrazone complex from BaSO4 in an alkaline medium; neutralization and reading of the optical absorbance of the complex (λ = 370 nm). The prothrombin/fibrinogen carbonylation and plasma clotting rate in vitro in the presence of reactive oxygen species (ROS)-generating agents (0.05-0.8 mM Fe2+/H2O2) were monitored. RESULTS The plasma volume required for measurement of carbonylated prothrombin was 0.4 ml. High level of linearity and reproducibility was observed (r = 0.9995, P = 0.0005 - for the protein; r = 0.9971, P = 0.0029 - for carbonyls). In the intact rats, the concentration of blood plasma prothrombin was 0.355 ± 0.009 mg/ml, and that of carbonyls was 4.94 ± 0.09 nmol/mg. DISCUSSION Prothrombin and plasma clotting rate was not affected by low concentrations of ROS (0.05-0.2 mM Fe2+/H2O2). The fibrinogen was susceptible to ROS-related effect over all the used range of concentration (0.05-0.8 mM Fe2+/H2O2). Carbonylation of fibrinogen did not affect the plasma clotting activity at low ROS concentration (0.05-0.2 mM Fe2+/H2O2), however it retarded the clotting at higher ROS (0.2-0.8 mM Fe2+/H2O2).
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Affiliation(s)
- Hayk A. Harutyunyan
- Laboratory of biochemical and biophysical investigations, Scientific-Research Centre, Yerevan State Medical University after Mkhitar Heratsi, Yerevan 0025, Armenia
- Laboratory of Adenyline Compounds Metabolism, H. Buniatian Institute of Biochemistry, National Academy of Sciences of Republic of Armenia, Yerevan 0025, Armenia
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Portelli M, Militi A, Cervino G, Lauritano F, Sambataro S, Mainardi A, Nucera R. Oxidative Stress Evaluation in Patients Treated with Orthodontic Self-ligating Multibracket Appliances: An in Vivo Case-Control Study. Open Dent J 2017; 11:257-265. [PMID: 28839474 PMCID: PMC5543706 DOI: 10.2174/1874210601711010257] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 04/23/2017] [Accepted: 05/12/2017] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVE Oxidative stress is a pathologic event induced by a prevalence of oxidant agents on the antioxidant ones, with a consequent alteration of oxide-reducing balance. INTRODUCTION Freeradicals produce damages both in cellular and extra-cellular components; phospholipid membranes, proteins, mitochondrial and nuclear DNA, are the target of the oxidative stress, that can finally cause cellular death due to apoptosis. MATERIALS & METHODS Orthodontic appliances such as brackets, wires, resins and soldering have some components that can be considered as potential allergen, carcinogenic, cytotoxic and gene mutation factors. The primary aim of this research is to evaluate oxidative stress in the saliva of patients treated with multibracket self-ligating vestibular orthodontic appliances; the secondary purpose is to investigate the influence of orthodontic multibracket therapy on oral hygiene and the consequent effect on oxidative stress. Salivary specimens has been collected in a sample of 23 patients were enrolled (12 Female, 11 Male) between 12 and 16 years of age (mean age 14.2). For each patient has been collected a salivary specimen at the following time points; before orthodontic bonding (T1), five weeks (T2) and ten weeks (T3) after orthodontic appliance bonding. RESULTS Samples has been analysed with a photometer due to SAT Test (Salivary Antioxidant Test). Data obtained show a mean of 2971 mEq/l of anti-oxidant agents before orthodontic treatment, and after five weeks from the bonding the mean was decreased to 2909 mEq/l, instead at ten weeks was increased to 3332 mEq/l. Repeated measures ANOVA did not reveal statistically significant differences between the time points (P = 0.1697). The study did not reveal any correlation between the level of dental hygiene and that of oxidative stress (Pearson Correlation Coefficient R = 0). CONCLUSION Orthodontic treatment with multibrackets vestibular metallic appliance seems to be not able to affect oxidative stress during the first ten weeks of therapy.
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Affiliation(s)
- Marco Portelli
- Department of Biomedical, Dental Science and Morphological and Functional Images, Dental School, University of Messina, Messina, Italy
| | - Angela Militi
- Department of Biomedical, Dental Science and Morphological and Functional Images, Dental School, University of Messina, Messina, Italy
| | - Gabriele Cervino
- Department of Biomedical, Dental Science and Morphological and Functional Images, Dental School, University of Messina, Messina, Italy
| | - Floriana Lauritano
- Department of Biomedical, Dental Science and Morphological and Functional Images, Dental School, University of Messina, Messina, Italy
| | - Sergio Sambataro
- Private Practice, Center Orthodontics and Gnathology (COS), Catania, Italy
| | | | - Riccardo Nucera
- Department of Biomedical, Dental Science and Morphological and Functional Images, Dental School, University of Messina, Messina, Italy
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234
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Gao S, Li C, Chen L, Zhou X. Actions and mechanisms of reactive oxygen species and antioxidative system in semen. Mol Cell Toxicol 2017. [DOI: 10.1007/s13273-017-0015-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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235
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Elnegaard RLB, Møllegaard NE, Zhang Q, Kjeldsen F, Jørgensen TJD. Uranyl Photocleavage of Phosphopeptides Yields Truncated C-Terminally Amidated Peptide Products. Chembiochem 2017; 18:1117-1122. [PMID: 28425166 PMCID: PMC5488209 DOI: 10.1002/cbic.201700103] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Indexed: 12/24/2022]
Abstract
The uranyl ion (UO22+) binds phosphopeptides with high affinity, and when irradiated with UV‐light, it can cleave the peptide backbone. In this study, high‐accuracy tandem mass spectrometry and enzymatic assays were used to characterise the photocleavage products resulting from the uranyl photocleavage reaction of a tetraphosphorylated β‐casein model peptide. We show that the primary photocleavage products of the uranyl‐catalysed reaction are C‐terminally amidated. This could be of great interest to the pharmaceutical industry, as efficient peptide amidation reactions are one of the top challenges in green pharmaceutical chemistry.
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Affiliation(s)
- Rasmus L B Elnegaard
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Niels Erik Møllegaard
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Qiang Zhang
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Frank Kjeldsen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Thomas J D Jørgensen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
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Justino AB, Pereira MN, Peixoto LG, Vilela DD, Caixeta DC, de Souza AV, Teixeira RR, Silva HCG, de Moura FBR, Moraes IB, Espindola FS. Hepatoprotective Properties of a Polyphenol-Enriched Fraction from Annona crassiflora Mart. Fruit Peel against Diabetes-Induced Oxidative and Nitrosative Stress. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:4428-4438. [PMID: 28514152 DOI: 10.1021/acs.jafc.7b01355] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A polyphenol-enriched fraction from Annona crassiflora fruit peel (Ac-Pef) containing chlorogenic acid, (epi)catechin, procyanidin B2, and caffeoyl-glucoside was investigated against hepatic oxidative and nitrosative stress in streptozotocin-induced diabetic rats. Serum biochemical parameters, hepatic oxidative and nitrosative status, glutathione defense system analysis, and in silico assessment of absorption, distribution, metabolism, excretion, and toxicity (ADMET) of the main compounds of Ac-Pef were carried out. Ac-Pef treatment during 30 days decreased serum alanine aminotransferase, aspartate aminotransferase, and alkaline phosphatase activities, as well as hepatic lipid peroxidation, protein carbonylation and nitration, inducible nitric oxide synthase level, and activities and expressions of glutathione peroxidase, superoxide dismutase, and catalase. There were increases in antioxidant capacity, glutathione reductase activity, and reduced glutathione level. ADMET predictions of Ac-Pef compounds showed favorable absorption and distribution, with no hepatotoxicity. A. crassiflora fruit peel showed hepatoprotective properties, indicating a promising natural source of bioactive molecules for prevention and therapy of diabetes complications.
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Affiliation(s)
| | - Mariana Nunes Pereira
- Institute of Genetics and Biochemistry, Federal University of Uberlândia , Uberlândia, Brazil
| | - Leonardo Gomes Peixoto
- Institute of Genetics and Biochemistry, Federal University of Uberlândia , Uberlândia, Brazil
| | - Danielle Diniz Vilela
- Institute of Genetics and Biochemistry, Federal University of Uberlândia , Uberlândia, Brazil
| | | | - Adriele Vieira de Souza
- Institute of Genetics and Biochemistry, Federal University of Uberlândia , Uberlândia, Brazil
| | - Renata Roland Teixeira
- Institute of Genetics and Biochemistry, Federal University of Uberlândia , Uberlândia, Brazil
| | | | | | - Izabela Barbosa Moraes
- Center of Biological Sciences and Health, Federal University of Oeste da Bahia , Barreiras, Brazil
| | - Foued Salmen Espindola
- Institute of Genetics and Biochemistry, Federal University of Uberlândia , Uberlândia, Brazil
- Institute of Biomedical Sciences, Federal University of Uberlândia , Uberlândia, Brazil
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Dos Santos Moysés F, Bertoldi K, Elsner VR, Cechinel LR, Basso C, Stülp S, Rodrigues MAS, Siqueira IR. Effect of tannery effluent on oxidative status of brain structures and liver of rodents. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:15689-15699. [PMID: 28527140 DOI: 10.1007/s11356-017-9149-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 04/28/2017] [Indexed: 06/07/2023]
Abstract
Oxidative stress has been considered as a central mechanism of toxicity induced by xenobiotics. Previously, it was demonstrated that mice exposed to tannery effluent showed an anxiety-like behavior, without any comparable behavioral effects in rats. The aim of the present study was to investigate the impact of tannery wastewater on oxidative status in in vitro and in vivo assays with two mammal species, mice and rats. Specifically, homogenates of two brain areas and the liver were incubated with tannery wastewater; reactive species and lipid peroxidation levels and antioxidant enzyme activities were detected. In addition, the effects of in vivo exposure of mice to tannery effluents on and lipid peroxidation levels and the total reactive antioxidant capacity in brain areas and liver. Brain areas, the hippocampus and frontal cortex, and the liver of mice exposed to tannery wastewater showed oxidative stress. Our data suggest that divergent species-dependent hepatic enzymes adaptations, such as glutathione peroxidase and glutathione S-transferase activities, induced by tannery effluent could explain previous behavioral findings.
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Affiliation(s)
- Felipe Dos Santos Moysés
- Programa de Pós-Graduação em Ciências Biológicas - Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Departamento de Ciências Biológicas, Universidade Regional Integrada do Alto Uruguai e das Missões, Erechim, RS, Brazil
| | - Karine Bertoldi
- Programa de Pós-Graduação em Ciências Biológicas - Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Viviane Rostirola Elsner
- Programa de Pós-Graduação em Ciências Biológicas - Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Laura Reck Cechinel
- Programa de Pós-Graduação em Ciências Biológicas - Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Carla Basso
- Programa de Pós-Graduação em Ciências Biológicas - Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Simone Stülp
- Programa de Pós-Graduação em Ambiente e Desenvolvimento, Univates, Lajeado, RS, Brazil
| | | | - Ionara Rodrigues Siqueira
- Programa de Pós-Graduação em Ciências Biológicas - Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
- Departamento de Farmacologia, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite, 500 sala 202, Porto Alegre, RS, 90050-170, Brazil.
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Cipak Gasparovic A, Zarkovic N, Zarkovic K, Semen K, Kaminskyy D, Yelisyeyeva O, Bottari SP. Biomarkers of oxidative and nitro-oxidative stress: conventional and novel approaches. Br J Pharmacol 2017; 174:1771-1783. [PMID: 27864827 PMCID: PMC5446576 DOI: 10.1111/bph.13673] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 10/04/2016] [Accepted: 10/11/2016] [Indexed: 12/14/2022] Open
Abstract
The concept of oxidative stress (OS) that connects altered redox biology with various diseases was introduced 30 years ago and has generated intensive research over the past two decades. Whereas it is now commonly accepted that macromolecule oxidation in response to ROS is associated with a variety of pathologies, the emergence of NO as a key regulator of redox signalling has led to the discovery of the pathophysiological significance of reactive nitrogen species (RNS). RNS can elicit various modifications of macromolecules and lead to nitrative or nitro-OS. In order to investigate oxidative and nitro-OS in human and in live animal models, circulating biomarker assays have been developed. This article provides an overview of key biomarkers used to assess lipid peroxidation and NO/NO2 signalling, thereby stressing the necessity to analyse several OS biomarkers in relation to the overall (aerobic) metabolism and health condition of patients. In addition, the potential interest of heart rate variability as the non-invasive integrative biomarker of OS is discussed. LINKED ARTICLES This article is part of a themed section on Redox Biology and Oxidative Stress in Health and Disease. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.12/issuetoc.
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Affiliation(s)
| | | | - Kamelija Zarkovic
- Division of Pathology, Clinical Hospital Centre, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Khrystyna Semen
- Department of Propedeutics of Internal Medicine #2, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Danylo Kaminskyy
- Department of Pharmaceutical, Organic, and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Olha Yelisyeyeva
- Department of Histology, Cytology and Embryology, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Serge P Bottari
- Institute for Advanced Biosciences, INSERM U1029, CNRS UMR 5309, Grenoble-Alps University Medical School, Grenoble, France
- Radioanalysis Laboratory, CHU Grenoble-Alpes, Grenoble, France
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Redox Regulation of the Tumor Suppressor PTEN by Hydrogen Peroxide and Tert-Butyl Hydroperoxide. Int J Mol Sci 2017; 18:ijms18050982. [PMID: 28489026 PMCID: PMC5454895 DOI: 10.3390/ijms18050982] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 04/21/2017] [Accepted: 04/25/2017] [Indexed: 12/25/2022] Open
Abstract
Organic peroxides and hydroperoxides are skin tumor promoters. Free radical derivatives from these compounds are presumed to be the prominent mediators of tumor promotion. However, the molecular targets of these species are unknown. Phosphatase and tensin homologs deleted on chromosome 10 (PTEN) are tumor suppressors that play important roles in cell growth, proliferation, and cell survival by negative regulation of phosphoinositol-3-kinase/protein kinase B signaling. PTEN is reversibly oxidized in various cells by exogenous and endogenous hydrogen peroxide. Oxidized PTEN is converted back to the reduced form by cellular reducing agents, predominantly by the thioredoxin (Trx) system. Here, the role of tert-butyl hydroperoxide (t-BHP) in redox regulation of PTEN was analyzed by using cell-based and in vitro assays. Exposure to t-BHP led to oxidation of recombinant PTEN. In contrast to H2O2, PTEN oxidation by t-BHP was irreversible in HeLa cells. However, oxidized PTEN was reduced by exogenous Trx system. Taken together, these results indicate that t-BHP induces PTEN oxidation and inhibits Trx system, which results in irreversible PTEN oxidation in HeLa cells. Collectively, these results suggest a novel mechanism of t-BHP in the promotion of tumorigenesis.
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240
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Kaplan M, Ates I, Yuksel M, Ozderin Ozin Y, Alisik M, Erel O, Kayacetin E. Thiol/disulphide homeostasis in celiac disease. World J Gastrointest Pharmacol Ther 2017; 8:120-126. [PMID: 28533921 PMCID: PMC5421110 DOI: 10.4292/wjgpt.v8.i2.120] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/25/2017] [Accepted: 03/13/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To determine dynamic thiol/disulphide homeostasis in celiac disease and to examine the associate with celiac autoantibodies and gluten-free diet.
METHODS Seventy three patients with celiac disease and 73 healthy volunteers were enrolled in the study. In both groups, thiol/disulphide homeostasis was examined with a new colorimetric method recently developed by Erel and Neselioglu.
RESULTS In patients with celiac disease, native thiol (P = 0.027) and total thiol (P = 0.031) levels were lower, while disulphide (P < 0.001) level, disulphide/native thiol (P < 0.001) and disulphide/total thiol (P < 0.001) ratios were higher compared to the control group. In patients who do not comply with a gluten-free diet, disulphide/native thiol ratio was found higher compared to the patients who comply with the diet (P < 0.001). In patients with any autoantibody-positive, disulphide/native thiol ratio was observed higher compared to the patients with autoantibody-negative (P < 0.05). It is found that there is a negative correlation between celiac autoantibodies, and native thiol, total thiol levels and native thiol/total thiol ratio, while a positive correlation is observed between disulphide, disulphide/native thiol and disulphide/total thiol levels.
CONCLUSION This study is first in the literature which found that the patients with celiac disease the dynamic thiol/disulphide balance shifts through disulphide form compared to the control group.
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241
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Zahra A, Fath MA, Opat E, Mapuskar KA, Bhatia SK, Ma DC, Rodman SN, Snyders TP, Chenard CA, Eichenberger-Gilmore JM, Bodeker KL, Ahmann L, Smith BJ, Vollstedt SA, Brown HA, Hejleh TA, Clamon GH, Berg DJ, Szweda LI, Spitz DR, Buatti JM, Allen BG. Consuming a Ketogenic Diet while Receiving Radiation and Chemotherapy for Locally Advanced Lung Cancer and Pancreatic Cancer: The University of Iowa Experience of Two Phase 1 Clinical Trials. Radiat Res 2017; 187:743-754. [PMID: 28437190 DOI: 10.1667/rr14668.1] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ketogenic diets are low in carbohydrates and high in fat, which forces cells to rely more heavily upon mitochondrial oxidation of fatty acids for energy. Relative to normal cells, cancer cells are believed to exist under a condition of chronic mitochondrial oxidative stress that is compensated for by increases in glucose metabolism to generate reducing equivalents. In this study we tested the hypothesis that a ketogenic diet concurrent with radiation and chemotherapy would be clinically tolerable in locally advanced non-small cell lung cancer (NSCLC) and pancreatic cancer and could potentially exploit cancer cell oxidative metabolism to improve therapeutic outcomes. Mice bearing MIA PaCa-2 pancreatic cancer xenografts were fed either a ketogenic diet or standard rodent chow, treated with conventionally fractionated radiation (2 Gy/fraction), and tumor growth rates were assessed daily. Tumors were assessed for immunoreactive 4-hydroxy-2-nonenal-(4HNE)-modfied proteins as a marker of oxidative stress. Based on this and another previously published preclinical study, phase 1 clinical trials in locally advanced NSCLC and pancreatic cancer were initiated, combining standard radiation and chemotherapy with a ketogenic diet for six weeks (NSCLC) or five weeks (pancreatic cancer). The xenograft experiments demonstrated prolonged survival and increased 4HNE-modfied proteins in animals consuming a ketogenic diet combined with radiation compared to radiation alone. In the phase 1 clinical trial, over a period of three years, seven NSCLC patients enrolled in the study. Of these, four were unable to comply with the diet and withdrew, two completed the study and one was withdrawn due to a dose-limiting toxicity. Over the same time period, two pancreatic cancer patients enrolled in the trial. Of these, one completed the study and the other was withdrawn due to a dose-limiting toxicity. The preclinical experiments demonstrate that a ketogenic diet increases radiation sensitivity in a pancreatic cancer xenograft model. However, patients with locally advanced NSCLC and pancreatic cancer receiving concurrent radiotherapy and chemotherapy had suboptimal compliance to the oral ketogenic diet and thus, poor tolerance.
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Affiliation(s)
- Amir Zahra
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Melissa A Fath
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Emyleigh Opat
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Kranti A Mapuskar
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Sudershan K Bhatia
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Daniel C Ma
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Samuel N Rodman
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Travis P Snyders
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Catherine A Chenard
- b Department of Internal Medicine, University of Iowa, Iowa City, Iowa 52242
| | | | - Kellie L Bodeker
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Logan Ahmann
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Brian J Smith
- d Holden Comprehensive Cancer Center, University of Iowa, Iowa City, Iowa 52242
| | - Sandy A Vollstedt
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Heather A Brown
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Taher Abu Hejleh
- e Division of Hematology and Oncology in the Department of Internal Medicine, University of Iowa, Iowa City, Iowa 52242
| | - Gerald H Clamon
- e Division of Hematology and Oncology in the Department of Internal Medicine, University of Iowa, Iowa City, Iowa 52242
| | - Daniel J Berg
- e Division of Hematology and Oncology in the Department of Internal Medicine, University of Iowa, Iowa City, Iowa 52242
| | - Luke I Szweda
- f Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104
| | - Douglas R Spitz
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - John M Buatti
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
| | - Bryan G Allen
- a Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
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Liu Y, Liu X, Liu Y, Liu G, Ding L, Lu X. Construction of a highly sensitive non-enzymatic sensor for superoxide anion radical detection from living cells. Biosens Bioelectron 2017; 90:39-45. [DOI: 10.1016/j.bios.2016.11.015] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 10/31/2016] [Accepted: 11/06/2016] [Indexed: 12/25/2022]
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Amino acid oxidation of the D1 and D2 proteins by oxygen radicals during photoinhibition of Photosystem II. Proc Natl Acad Sci U S A 2017; 114:2988-2993. [PMID: 28265052 DOI: 10.1073/pnas.1618922114] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The Photosystem II reaction center is vulnerable to photoinhibition. The D1 and D2 proteins, lying at the core of the photosystem, are susceptible to oxidative modification by reactive oxygen species that are formed by the photosystem during illumination. Using spin probes and EPR spectroscopy, we have determined that both O2•- and HO• are involved in the photoinhibitory process. Using tandem mass spectroscopy, we have identified a number of oxidatively modified D1 and D2 residues. Our analysis indicates that these oxidative modifications are associated with formation of HO• at both the Mn4O5Ca cluster and the nonheme iron. Additionally, O2•- appears to be formed by the reduction of O2 at either PheoD1 or QA Early oxidation of D1:332H, which is coordinated with the Mn1 of the Mn4O5Ca cluster, appears to initiate a cascade of oxidative events that lead to the oxidative modification of numerous residues in the C termini of the D1 and D2 proteins on the donor side of the photosystem. Oxidation of D2:244Y, which is a bicarbonate ligand for the nonheme iron, induces the propagation of oxidative reactions in residues of the D-de loop of the D2 protein on the electron acceptor side of the photosystem. Finally, D1:130E and D2:246M are oxidatively modified by O2•- formed by the reduction of O2 either by PheoD1•- or QA•- The identification of specific amino acid residues oxidized by reactive oxygen species provides insights into the mechanism of damage to the D1 and D2 proteins under light stress.
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Wang T, Li Z, Yuan F, Lin H, Pavase TR. Effects of brown seaweed polyphenols, α-tocopherol, and ascorbic acid on protein oxidation and textural properties of fish mince (Pagrosomus major) during frozen storage. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:1102-1107. [PMID: 27282659 DOI: 10.1002/jsfa.7835] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Revised: 05/18/2016] [Accepted: 06/02/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Frozen storage of minced fish is currently one of the most important techniques to maintain its functional properties. However, some deterioration does occur during frozen storage and cause quality loss. The effects of brown seaweed polyphenols, α-tocopherol, and ascorbic acid on lipid and protein oxidation and textural properties of red sea bream (Pagrosomus major) during 90 days of frozen storage at -18 °C were investigated. RESULTS All added antioxidants at 1 g kg-1 resulted in significantly lower thiobarbituric acid-reactive substances (TBARS) compared to the control during the 45 days of frozen storage. The antioxidants were also effective in retarding protein oxidation concerning to total sulfhydryl content and protein carbonyl content. Brown seaweed polyphenols and α-tocopherol significantly retarded the inactivation of Ca2+ -ATPase activity during the first 45 days, whereas ascorbic acid had no such effect. The antioxidant activity showed either an invariable or decrease trend after 45 days storage. Adding antioxidants had a significant effect on the breaking force of the gels during the frozen storage period. CONCLUSION These results indicate that brown seaweed polyphenols and α-tocopherol can be used to prevent oxidative reactions and thus maintain the structure of the gel formed by fish mince during frozen storage. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Tiantian Wang
- Laboratory of Food Safety, College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China
| | - Zhenxing Li
- Laboratory of Food Safety, College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China
| | - Fangzhou Yuan
- Laboratory of Food Safety, College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China
| | - Hong Lin
- Laboratory of Food Safety, College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China
| | - Tushar Ramesh Pavase
- Laboratory of Food Safety, College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China
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Zhu L, Chen J, Tan J, Liu X, Wang B. Flavonoids from Agrimonia pilosa Ledeb: Free Radical Scavenging and DNA Oxidative Damage Protection Activities and Analysis of Bioactivity-Structure Relationship Based on Molecular and Electronic Structures. Molecules 2017; 22:E195. [PMID: 28245624 PMCID: PMC6155215 DOI: 10.3390/molecules22030195] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 01/15/2017] [Accepted: 01/19/2017] [Indexed: 11/16/2022] Open
Abstract
To clarify the substantial basis of the excellent antioxidant capacity of Agrimonia pilosa Ledeb. Fourteen flavonoids were isolated and identified from Agrimonia pilosa Ledeb, seven of which have notable DPPH radical scavenging activities, i.e., catechin, luteolin, quercetin, quercitrin, hyperoside, rutin, luteolin-7-O-β-glucoside with IC50 values of 5.06, 7.29, 4.36, 7.12, 6.34, 6.36 and 8.12 µM, respectively. The DNA nicking assay showed that five flavonoids from Agrimonia pilosa Ledeb-taxifolin, catechin, hyperoside, quercitrin and rutin-have good protective activity against DNA oxidative damage. Further, we analyzed the bioactivity-structure relationship of these 14 flavonoids by applying quantum theory. According to their O-H bond dissociation enthalpy (BDE), C ring's spin density and stable molecular structure, the relationship between their structures and radical scavenging capacities was evaluated and clarified. We found that among flavonoid aglycones from Agrimonia pilosa Ledeb, the O-H BDE of quercetin is lowest with the values of 69.02 and the O-H BDE of apigenin is highest with the values of 79.77. It is interesting that the O-H BDE value of isovitexin (78.55) with glycoside at C-6 position is lower than that of its aglycone (79.77) and vitexin (99.20) with glycoside at C-8 position. Further analysis indicated that the glycosidation of flavonoids at C-6 in the A-ring makes a more uniform distribution of spin density and improves the stability of free radicals leading to the increase in antioxidant capacity. Flavonoids with good antioxidant capacity might contribute to the pharmacological effects of Agrimonia pilosa Ledeb.
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Affiliation(s)
- Liancai Zhu
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, China.
| | - Jinqiu Chen
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, China.
| | - Jun Tan
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological & Chemical engineering, Chongqing University of Education, Chongqing 400067, China.
| | - Xi Liu
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological & Chemical engineering, Chongqing University of Education, Chongqing 400067, China.
| | - Bochu Wang
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, China.
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Cervellati C, Bergamini CM. Oxidative damage and the pathogenesis of menopause related disturbances and diseases. Clin Chem Lab Med 2017; 54:739-53. [PMID: 26544103 DOI: 10.1515/cclm-2015-0807] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 09/18/2015] [Indexed: 12/24/2022]
Abstract
The postmenopausal phase of life is frequently associated in women with subjective symptoms (e.g. vasomotor) and real diseases (atherosclerosis with coronary ischemia, osteoporosis, Alzheimer-type neurodegeneration, urogenital dystrophy), which together determine the post-menopausal syndrome. Observations that oxidative damage by reactive oxygen/nitrogen species in experimental models can contribute to the pathogenesis of these disturbances stimulated research on the relationships between menopause, its endocrine deficiency, oxidative balance and the "wellness" in postmenopausal life. The connection among these events is probably due to the loss of protective actions exerted by estrogens during the fertile life. Most recent studies have revealed that estrogens exert an antioxidant action not by direct chemical neutralization of reactants as it was expected until recently but by modulating the expression of antioxidant enzymes that control levels of biological reducing agents. Also nutritional antioxidants apparently act by a similar mechanism. From this perspective it is conceivable that a cumulative control of body oxidant challenges and biological defenses could help in monitoring between "normal" and "pathological" menopause. However, as clinical studies failed to confirm this scenario in vivo, we have decided to review the existing literature to understand the causes of this discrepancy and whether this was due to methodologic reasons or to real failure of the basic hypothesis.
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247
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Crulhas BP, Recco LC, Delella FK, Pedrosa VA. A Novel Superoxide Anion Biosensor for Monitoring Reactive Species of Oxygen Released by Cancer Cells. ELECTROANAL 2017. [DOI: 10.1002/elan.201600767] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Bruno P. Crulhas
- Departament of Chemistry and Biochemistry; Institute of Bioscience, UNESP-Botucatu, SP; Brazil
| | - Lucas C. Recco
- Departament of Chemistry and Biochemistry; Institute of Bioscience, UNESP-Botucatu, SP; Brazil
| | - Flávia K. Delella
- Departament of Morphology; Institute of Bioscience, UNESP-Botucatu, SP; Brazil
| | - Valber A. Pedrosa
- Departament of Chemistry and Biochemistry; Institute of Bioscience, UNESP-Botucatu, SP; Brazil
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Altinkaynak H, Kurkcuoglu PZ, Caglayan M, Yorgun MA, Yuksel N, Kosekahya P, Koca C, Toklu Y. A novel marker in acute central serous chorioretinopathy: thiol/disulfide homeostasis. Int Ophthalmol 2017; 38:175-181. [PMID: 28108906 DOI: 10.1007/s10792-017-0444-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 01/02/2017] [Indexed: 01/09/2023]
Abstract
PURPOSE The aim of this study was to compare dynamic thiol/disulfide homeostatic status in acute central serous chorioretinopathy (CSCR) patients by using a novel and automated assay determining dynamic thiol/disulfide homeostasis. METHODS Fifty-one patients with acute CSCR (study group) and 65 healthy individuals (control group) were enrolled in this study. Diagnosis of acute CSCR was made clinically and using spectral-domain RTVue OCT (optical coherence tomography) (Optovue, Fremont, CA). Fluorescein angiography confirmed the diagnosis of acute CSCR in all subjects. Total thiol, native thiol, disulfide amount, and native thiol/disulfide ratio (TDR) were calculated in the blood samples. RESULTS Mean total thiol, native thiol, and native TDR values were lower in patients with acute CSCR (364.2 ± 14.1, 326.4 ± 13.2, 17.14 ± 1.9, respectively) than in healthy eyes (441.2 ± 16.3, 398.5 ± 16.4, 22.70 ± 2.15, respectively; mean total thiol, p = 0.017; native thiol, p = 0.011; native TDR, p = 0.031). CONCLUSIONS Total thiol, native thiol, and native TDR were significantly lower statistically in patients with acute CSCR when compared with healthy controls.
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Affiliation(s)
- Hasan Altinkaynak
- Department of Ophthalmology, Ankara Atatürk Education and Research Hospital, Ankara, Turkey.
| | | | - Mehtap Caglayan
- Department of Ophthalmology, Ankara Atatürk Education and Research Hospital, Ankara, Turkey
| | - Mücella Arıkan Yorgun
- Department of Ophthalmology, Ankara Atatürk Education and Research Hospital, Ankara, Turkey
| | - Nilay Yuksel
- Department of Ophthalmology, Ankara Atatürk Education and Research Hospital, Ankara, Turkey
| | - Pınar Kosekahya
- Ulucanlar Eye Education and Research Hospital, Ankara, Turkey
| | - Cemile Koca
- Department of Biochemistry, Yıldırım Beyazıt University, Ankara Atatürk Education and Research Hospital, Ankara, Turkey
| | - Yasin Toklu
- Department of Ophthalmology, Yıldırım Beyazıt University, Ankara Atatürk Education and Research Hospital, Ankara, Turkey
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Li KB, Dong L, Zhang S, Shi W, Jia WP, Han DM. Fluorogenic boronate-based probe-lactulose complex for full-aqueous analysis of peroxynitrite. Talanta 2017; 165:593-597. [PMID: 28153303 DOI: 10.1016/j.talanta.2017.01.028] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Revised: 01/04/2017] [Accepted: 01/06/2017] [Indexed: 11/20/2022]
Abstract
A selective fluorogenic boronate-based probe-lactulose complex was evaluated for the rapid analysis of peroxynitrite (ONOO-) based on a reaction-based indicator displacement assay (RIA). The probe was synthesised by a simple nucleophilic substitution reaction between a boronic acid moiety and a well known laser dye, DCM. Fluorescence analyses showed that the probe had an off-on response to lactulose, forming a fluorogenic probe-lactulose complex. The subsequent addition of ONOO- selectively quenched the fluorescence of the complex over other Reactive Oxygen/ Nitrogen Species (ROS/RNS) tested. The complex can be applied for the rapid determination of ONOO- in full aqueous solution with good linear range, and has also proven suitable for monitoring ONOO- in living cells and real water samples.
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Affiliation(s)
- Kai-Bin Li
- Department of Chemistry, Taizhou University, Jiaojiang 318000, PR China.
| | - Lei Dong
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires,, Laboratoire de Chimie Organique 2 - Glycochimie, UMR 5246, Université Lyon 1 and CNRS, 43 Boulevard du 11 Novembre 1918, F-69622, Villeurbanne, France
| | - Siqi Zhang
- Department of Chemistry, Taizhou University, Jiaojiang 318000, PR China
| | - Wei Shi
- Department of Chemistry, Taizhou University, Jiaojiang 318000, PR China
| | - Wen-Ping Jia
- Department of Chemistry, Taizhou University, Jiaojiang 318000, PR China
| | - De-Man Han
- Department of Chemistry, Taizhou University, Jiaojiang 318000, PR China.
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