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Trometer N, Cichocki B, Chevalier Q, Pécourneau J, Strub JM, Hemmerlin A, Specht A, Davioud-Charvet E, Elhabiri M. Synthesis and Photochemical Properties of Fluorescent Metabolites Generated from Fluorinated Benzoylmenadiones in Living Cells. J Org Chem 2024; 89:2104-2126. [PMID: 37267444 DOI: 10.1021/acs.joc.3c00620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This work describes the reactivity and properties of fluorinated derivatives (F-PD and F-PDO) of plasmodione (PD) and its metabolite, the plasmodione oxide (PDO). Introduction of a fluorine atom on the 2-methyl group markedly alters the redox properties of the 1,4-naphthoquinone electrophore, making the compound highly oxidizing and particularly photoreactive. A fruitful set of analytical methods (electrochemistry, absorption and emission spectrophotometry, and HRMS-ESI) have been used to highlight the products resulting from UV photoirradiation in the absence or presence of selected nucleophiles. With F-PDO and in the absence of nucleophile, photoreduction generates a highly reactive ortho-quinone methide (o-QM) capable of leading to the formation of a homodimer. In the presence of thiol nucleophiles such as β-mercaptoethanol, which was used as a model, o-QMs are continuously regenerated in sequential photoredox reactions generating mono- or disulfanylation products as well as various unreported sulfanyl products. Besides, these photoreduced adducts derived from F-PDO are characterized by a bright yellowish emission due to an excited-state intramolecular proton transfer (ESIPT) process between the dihydronapthoquinone and benzoyl units. In order to evidence the possibility of an intramolecular coupling of the o-QM intermediate, a synthetic route to the corresponding anthrones is described. Tautomerization of the targeted anthrones occurs and affords highly fluorescent stable hydroxyl-anthraquinones. Although probable to explain the intense visible fluorescence emission also observed in tobacco BY-2 cells used as a cellular model, these coupling products have never been observed during the photochemical reactions performed in this study. Our data suggest that the observed ESIPT-induced fluorescence most likely corresponds to the generation of alkylated products through reduction species, as demonstrated with the β-mercaptoethanol model. In conclusion, F-PDO thus acts as a novel (pro)-fluorescent probe for monitoring redox processes and protein alkylation in living cells.
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Affiliation(s)
- Nathan Trometer
- Team Bio(IN)organic and Medicinal Chemistry, Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR7042 Université de Strasbourg-CNRS-UHA, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
| | - Bogdan Cichocki
- Team Bio(IN)organic and Medicinal Chemistry, Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR7042 Université de Strasbourg-CNRS-UHA, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
| | - Quentin Chevalier
- Institut De Biologie Moléculaire Des Plantes, Unité Propre de Recherche 2357, Centre National de la Recherche Scientifique-Université de Strasbourg, Strasbourg F-67084, France
| | - Jérémy Pécourneau
- Team Bio(IN)organic and Medicinal Chemistry, Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR7042 Université de Strasbourg-CNRS-UHA, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
| | - Jean-Marc Strub
- Laboratoire de Spectrométrie de Masse BioOrganique (LSMBO), UMR7178 Université de Strasbourg-CNRS, IPHC, 25 Rue Becquerel, 67087 Strasbourg, France
| | - Andréa Hemmerlin
- Institut De Biologie Moléculaire Des Plantes, Unité Propre de Recherche 2357, Centre National de la Recherche Scientifique-Université de Strasbourg, Strasbourg F-67084, France
| | - Alexandre Specht
- Conception et Applications des Molécules Bioactives, Faculté de Pharmacie, UMR 7199 CNRS-Université de Strasbourg, 74 Route du Rhin, Illkirch 67401, France
| | - Elisabeth Davioud-Charvet
- Team Bio(IN)organic and Medicinal Chemistry, Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR7042 Université de Strasbourg-CNRS-UHA, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
| | - Mourad Elhabiri
- Team Bio(IN)organic and Medicinal Chemistry, Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR7042 Université de Strasbourg-CNRS-UHA, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
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Kosmachevskaya OV, Novikova NN, Yakunin SN, Topunov AF. Formation of Supplementary Metal-Binding Centers in Proteins under Stress Conditions. BIOCHEMISTRY. BIOKHIMIIA 2024; 89:S180-S204. [PMID: 38621750 DOI: 10.1134/s0006297924140104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/21/2023] [Accepted: 10/29/2023] [Indexed: 04/17/2024]
Abstract
In many proteins, supplementary metal-binding centers appear under stress conditions. They are known as aberrant or atypical sites. Physico-chemical properties of proteins are significantly changed after such metal binding, and very stable protein aggregates are formed, in which metals act as "cross-linking" agents. Supplementary metal-binding centers in proteins often arise as a result of posttranslational modifications caused by reactive oxygen and nitrogen species and reactive carbonyl compounds. New chemical groups formed as a result of these modifications can act as ligands for binding metal ions. Special attention is paid to the role of cysteine SH-groups in the formation of supplementary metal-binding centers, since these groups are the main target for the action of reactive species. Supplementary metal binding centers may also appear due to unmasking of amino acid residues when protein conformation changing. Appearance of such centers is usually considered as a pathological process. Such unilateral approach does not allow to obtain an integral view of the phenomenon, ignoring cases when formation of metal complexes with altered proteins is a way to adjust protein properties, activity, and stability under the changed redox conditions. The role of metals in protein aggregation is being studied actively, since it leads to formation of non-membranous organelles, liquid condensates, and solid conglomerates. Some proteins found in such aggregates are typical for various diseases, such as Alzheimer's and Huntington's diseases, amyotrophic lateral sclerosis, and some types of cancer.
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Affiliation(s)
- Olga V Kosmachevskaya
- Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, 119071, Russia
| | | | - Sergey N Yakunin
- National Research Center "Kurchatov Institute", Moscow, 123182, Russia
| | - Alexey F Topunov
- Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, 119071, Russia.
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Yang Y, Zhang P, Zhou H, Yang M. Prognostic impact of the controlling nutritional status score in Chinese patients undergoing cardiac surgery. Chin Med J (Engl) 2023:00029330-990000000-00471. [PMID: 36941737 DOI: 10.1097/cm9.0000000000002071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Indexed: 03/23/2023] Open
Affiliation(s)
- Yan Yang
- Department of Nephrology, The First People's Hospital of Changzhou, Changzhou, Jiangsu 213003, China
| | - Pei Zhang
- Medical School of Soochow University, Soochow, Jiangsu 215007, China
| | - Hua Zhou
- Department of Nephrology, The First People's Hospital of Changzhou, Changzhou, Jiangsu 213003, China
| | - Min Yang
- Department of Nephrology, The First People's Hospital of Changzhou, Changzhou, Jiangsu 213003, China
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Georgieva E, Atanasov V, Kostandieva R, Tsoneva V, Mitev M, Arabadzhiev G, Yovchev Y, Karamalakova Y, Nikolova G. Direct Application of 3-Maleimido-PROXYL for Proving Hypoalbuminemia in Cases of SARS-CoV-2 Infection: The Potential Diagnostic Method of Determining Albumin Instability and Oxidized Protein Level in Severe COVID-19. Int J Mol Sci 2023; 24:ijms24065807. [PMID: 36982882 PMCID: PMC10058219 DOI: 10.3390/ijms24065807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/15/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
Oxidative stress and the albumin oxidized form can lead to hypoalbuminemia, which is a predisposing factor for reduced treatment effectiveness and an increased mortality rate in severe COVID-19 patients. The aim of the study is to evaluate the application of free radical 3-Maleimido-PROXYL and SDSL-EPR spectroscopy in the in vitro determination of ox/red HSA in serum samples from patients with SARS-CoV-2 infection. Venous blood was collected from patients intubated (pO2 < 90%) with a positive PCR test for SARS-CoV-2 and controls. At the 120th minute after the incubation of the serum samples from both groups with the 3-Maleimido-PROXYL, the EPR measurement was started. The high levels of free radicals were determined through the nitroxide radical TEMPOL, which probably led to increased oxidation of HSA and hypoalbuminemia in severe COVID-19. The double-integrated spectra of 3-Maleimido-PROXYL radical showed a low degree of connectivity due to high levels of oxidized albumin in COVID-19 patients. The low concentrations of reduced albumin in serum samples partially inhibit spin-label rotation, with Amax values and ΔH0 spectral parameters comparable to those of 3-Maleimido-PROXYL/DMSO. Based on the obtained results, we suggest that the stable nitroxide radical 3-Maleimido-PROXYL can be successfully used as a marker to study oxidized albumin levels in COVID-19.
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Affiliation(s)
- Ekaterina Georgieva
- Department of "General and Clinical Pathology, Forensic Medicine, Deontology and Dermatovenerology", Medical Faculty, Trakia University, 11 Armeiska Str., 6000 Stara Zagora, Bulgaria
- Department of "Medical Chemistry and Biochemistry", Medical Faculty, Trakia University, 11 Armeiska Str., 6000 Stara Zagora, Bulgaria
| | - Vasil Atanasov
- Forensic Toxicology Laboratory, Military Medical Academy, 3 G. Sofiiski, 1606 Sofia, Bulgaria
| | - Rositsa Kostandieva
- Forensic Toxicology Laboratory, Military Medical Academy, 3 G. Sofiiski, 1606 Sofia, Bulgaria
| | - Vanya Tsoneva
- Department of Propaedeutics of Internal Medicine and Clinical Laboratory, Medical Faculty, Trakia University, 11 Armeiska Str., 6000 Stara Zagora, Bulgaria
| | - Mitko Mitev
- Department of "Diagnostic Imaging", University Hospital "Prof. Dr. St. Kirkovich", 6000 Stara Zagora, Bulgaria
| | - Georgi Arabadzhiev
- Department of "Surgery and anesthesiology", University Hospital "Prof. Dr. St. Kirkovich", 6000 Stara Zagora, Bulgaria
| | - Yovcho Yovchev
- Department of "Surgery and anesthesiology", University Hospital "Prof. Dr. St. Kirkovich", 6000 Stara Zagora, Bulgaria
| | - Yanka Karamalakova
- Department of "Medical Chemistry and Biochemistry", Medical Faculty, Trakia University, 11 Armeiska Str., 6000 Stara Zagora, Bulgaria
| | - Galina Nikolova
- Department of "Medical Chemistry and Biochemistry", Medical Faculty, Trakia University, 11 Armeiska Str., 6000 Stara Zagora, Bulgaria
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Sui Y, Jiang R, Niimi M, Hong J, Yan Q, Shi Z, Yao J. Development of Dietary Thiol Antioxidant via Reductive Modification of Whey Protein and Its Application in the Treatment of Ischemic Kidney Injury. Antioxidants (Basel) 2023; 12:193. [PMID: 36671055 PMCID: PMC9854561 DOI: 10.3390/antiox12010193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 01/14/2023] Open
Abstract
Thiol antioxidants play important roles in cell and body defense against oxidative stress. In body fluid, albumin is the richest source of thiol antioxidants. One recent study showed that the reductive modification of thiol residues in albumin potentiated its antioxidative activity. Given that whey protein (WP) contains albumin and other thiol-active proteins, this property of WP could be exploited to develop novel thiol antioxidants. The aim of this study was to address this possibility. WP was reductively modified with dithiothreitol (DTT). The modified protein exhibited significantly elevated free sulfhydryl groups (-SH) and thiol antioxidative activity. It detoxified H2O2 and prevented H2O2-initiated protein oxidation and cell death in a -SH group-dependent way in vitro. In addition, it reacted with GSH/GSSG and altered the GSH/GSSG ratio via thiol-disulfide exchange. In vivo, oral administration of the reductively modified WP prevented oxidative stress and renal damage in a mouse model of renal injury caused by ischemia reperfusion. It significantly improved renal function, oxidation, inflammation, and cell injury. These protective effects were not observed in the WP control and were lost after blocking the -SH groups with maleimide. Furthermore, albumin, one of the ingredients of WP, also exhibited similar protective effects when reductively modified. In conclusion, the reductive modification of thiol residues in WP transformed it into a potent thiol antioxidant that protected kidneys from ischemia reperfusion injury. Given that oxidative stress underlies many life-threatening diseases, the reductively modified dietary protein could be used for the prevention and treatment of many oxidative-stress-related conditions, such as cardiovascular diseases, cancer, and aging.
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Affiliation(s)
- Yang Sui
- Division of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo City 409-3898, Japan
| | - Rui Jiang
- Division of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo City 409-3898, Japan
| | - Manabu Niimi
- Division of Molecular Pathology, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo City 409-3898, Japan
| | - Jingru Hong
- Division of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo City 409-3898, Japan
| | - Qiaojing Yan
- Division of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo City 409-3898, Japan
| | - Zhuheng Shi
- Division of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo City 409-3898, Japan
| | - Jian Yao
- Division of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo City 409-3898, Japan
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Tashima T. Delivery of Drugs into Cancer Cells Using Antibody-Drug Conjugates Based on Receptor-Mediated Endocytosis and the Enhanced Permeability and Retention Effect. Antibodies (Basel) 2022; 11:antib11040078. [PMID: 36546903 PMCID: PMC9774242 DOI: 10.3390/antib11040078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Innumerable people worldwide die of cancer every year, although pharmaceutical therapy has actualized many benefits in human health. For background, anti-cancer drug development is difficult due to the multifactorial pathogenesis and complicated pathology of cancers. Cancer cells excrete hydrophobic low-molecular anti-cancer drugs by overexpressed efflux transporters such as multiple drug resistance 1 (MDR1) at the apical membrane. Mutation-driven drug resistance is also developed in cancer. Moreover, the poor distribution of drug to cancer cells is a serious problem, because patients suffer from off-target side effects. Thus, highly selective and effective drug delivery into solid cancer cells across the membrane should be established. It is known that substances (10-100 nm in diameter) such as monoclonal antibodies (mAbs) (approximately 14.2 nm in diameter) or nanoparticles spontaneously gather in solid tumor stroma or parenchyma through the capillary endothelial fenestration, ranging from 200-2000 nm, in neovasculatures due to the enhanced permeability and retention (EPR) effect. Furthermore, cancer antigens, such as HER2, Nectin-4, or TROP2, highly selectively expressed on the surface of cancer cells act as a receptor for receptor-mediated endocytosis (RME) using mAbs against such antigens. Thus, antibody-drug conjugates (ADCs) are promising anti-cancer pharmaceutical agents that fulfill accurate distribution due to the EPR effect and due to antibody-antigen binding and membrane permeability owing to RME. In this review, I introduce the implementation and possibility of highly selective anti-cancer drug delivery into solid cancer cells based on the EPR effect and RME using anti-cancer antigens ADCs with payloads through suitable linkers.
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Affiliation(s)
- Toshihiko Tashima
- Tashima Laboratories of Arts and Sciences, 1239-5 Toriyama-cho, Kohoku-ku, Yokohama 222-0035, Japan
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Vazquez-Agra N, Marques-Afonso AT, Cruces-Sande A, Novo-Veleiro I, Pose-Reino A, Mendez-Alvarez E, Soto-Otero R, Hermida-Ameijeiras A. Assessment of oxidative stress markers in elderly patients with SARS-CoV-2 infection and potential prognostic implications in the medium and long term. PLoS One 2022; 17:e0268871. [PMID: 36201465 PMCID: PMC9536629 DOI: 10.1371/journal.pone.0268871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 09/17/2022] [Indexed: 11/18/2022] Open
Abstract
We aimed to evaluate the correlation of plasma levels of thiobarbituric acid reactive substances (TBARS) and reduced thiols with morbidity, mortality and immune response during and after SARS-CoV-2 infection. This was an observational study that included inpatients with SARS-CoV-2 infection older than 65 years. The individuals were followed up to the twelfth month post-discharge. Plasma levels of TBARS and reduced thiols were quantified as a measure of lipid and protein oxidation, respectively. Fatal and non-fatal events were evaluated during admission and at the third, sixth and twelfth month post-discharge. Differences in oxidative stress markers between the groups of interest, time to a negative RT-qPCR and time to significant anti-SARS-CoV-2 IgM titers were assessed. We included 61 patients (57% women) with a mean age of 83 years old. After multivariate analysis, we found differences in TBARS and reduced thiol levels between the comparison groups in fatal and non-fatal events during hospital admission. TBARS levels were also correlated with fatal events at the 6th and 12th months post-discharge. One year after hospital discharge, other predictors rather than oxidative stress markers were relevant in the models. The median time to reach significant anti-SARS-CoV-2 IgM titers was lower in patients with low levels of reduced thiols. Assessment of some parameters related to oxidative stress may help identify groups of patients with a higher risk of morbidity, mortality and delayed immune response during and after SARS-CoV-2 infection.
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Affiliation(s)
- Nestor Vazquez-Agra
- Department of Internal Medicine, University Hospital of Santiago de Compostela, A Coruña, Spain
- * E-mail: (NVA); (ACS)
| | | | - Anton Cruces-Sande
- Laboratory of neurochemistry, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Santiago de Compostela, A Coruña, Spain
- * E-mail: (NVA); (ACS)
| | - Ignacio Novo-Veleiro
- Department of Internal Medicine, University Hospital of Santiago de Compostela, A Coruña, Spain
| | - Antonio Pose-Reino
- Department of Internal Medicine, University Hospital of Santiago de Compostela, A Coruña, Spain
| | - Estefania Mendez-Alvarez
- Laboratory of neurochemistry, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Santiago de Compostela, A Coruña, Spain
| | - Ramon Soto-Otero
- Laboratory of neurochemistry, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Santiago de Compostela, A Coruña, Spain
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Majid N, Siddiqi MK, Alam A, Malik S, Ali W, Khan RH. Cholic acid inhibits amyloid fibrillation: Interplay of protonation and deprotonation. Int J Biol Macromol 2022; 221:900-912. [PMID: 36096254 DOI: 10.1016/j.ijbiomac.2022.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/23/2022] [Accepted: 09/04/2022] [Indexed: 11/29/2022]
Abstract
Amyloidopathies are the consequence of misfolding with subsequent aggregation affecting people worldwide. Irrespective of speedy advancement in the field of therapeutics no agent for treating amyloidopathies has been discovered and thus targeting amyloid fibrillation process via repositioning of small molecules can be fruitful. According to previous reports potential amyloid inhibitors possess unique features like, hydrophobicity, aromaticity, charge etc. Herein, we have explored the effect of Cholic acid (CA) on amyloid fibrillation irrespective of the charge (determined by Zetasizer) using four proteins Human Serum Albumin, Bovine Serum Albumin, Human Insulin and Beta-lactoglobulin (HSA, BSA, HI and BLG) employing biophysical, imaging and computational techniques. ThT results revealed that CA in both protonated and deprotonated form is potent to curb HSA, BSA, BLG aggregation ~50% and HI aggregation ~96% in a dose dependent manner (in accord with CD, ANS and Congo red assay). Interestingly, CA treated samples displayed reduced cytotoxicity (Hemolytic assay) with altered morphology (TEM) and mechanism behind inhibition may be the interaction of CA with proteins via hydrophobic interactions and hydrogen bonding (supported by molecular docking results). This study proved CA (irrespective of the pH) a potential inhibitor of amyloidosis thus can be helpful in generalizing and repurposing the related drugs/compounds for their anti-aggregation behavior as an implication towards treating amyloidopathies.
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Affiliation(s)
- Nabeela Majid
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | | | - Aftab Alam
- Centre for Interdisciplinary Research in Basic Science, Jamia Millia Islamia, New Delhi 110025, India
| | - Sadia Malik
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Wareesha Ali
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India.
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N-Acetylcysteine Regenerates In Vivo Mercaptoalbumin. Antioxidants (Basel) 2022; 11:antiox11091758. [PMID: 36139832 PMCID: PMC9495570 DOI: 10.3390/antiox11091758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/02/2022] [Accepted: 09/03/2022] [Indexed: 11/18/2022] Open
Abstract
Human serum albumin (HSA) represents the most abundant plasma protein, with relevant antioxidant activity due to the presence of the sulfhydryl group on cysteine at position 34 (Cys34), the latter being one of the major target sites for redox-dependent modifications leading to the formation of mixed disulfide linkages with low molecular weight thiols. Thiolated forms of HSA (Thio-HSA) may be useful as markers of an unbalanced redox state and as a potential therapeutic target. Indeed, we have previously reported that albumin Cys34 can be regenerated in vitro by N-Acetylcysteine (NAC) through a thiol-disulfide breaking mechanism, with a full recovery of the HSA antioxidant and antiplatelet activities. With this case study, we aimed to assess the ability of NAC to regenerate native mercaptoalbumin (HSA-SH) and the plasma antioxidant capacity in subjects with redox unbalance, after oral and intravenous administration. A placebo-controlled crossover study, single-blinded, was performed on six hypertensive subjects, randomized into two groups, on a one-to-one basis with NAC (600 mg/die) or a placebo, orally and intravenously administered. Albumin isoforms, HSA-SH, Thio-HSA, and glutathione levels were evaluated by means of mass spectrometry. The plasma antioxidant activity was assessed by a fluorimetric assay. NAC, orally administered, significantly decreased the Thio-HSA levels in comparison with the pre-treatment conditions (T0), reaching the maximal effect after 60 min (−24.7 ± 8%). The Thio-HSA reduction was accompanied by a concomitant increase in the native HSA-SH levels (+6.4 ± 2%). After intravenous administration of NAC, a significant decrease of the Thio-HSA with respect to the pre-treatment conditions (T0) was observed, with a maximal effect after 30 min (−68.9 ± 10.6%) and remaining significant even after 6 h. Conversely, no effect on the albumin isoforms was detected with either the orally or the intravenously administered placebo treatments. Furthermore, the total antioxidant activity of the plasma significantly increased after NAC infusion with respect to the placebo (p = 0.0089). Interestingly, we did not observe any difference in terms of total glutathione corrected for hemoglobin, ruling out any effect of NAC on the intracellular glutathione and supporting its role as a disulfide-breaking agent. This case study confirms the in vitro experiments and demonstrates for the first time that NAC is able to regenerate mercaptoalbumin in vivo, allowing us to hypothesize that the recovery of Cys34 content can modulate in vivo oxidative stress and, hopefully, have an effect in oxidative-based diseases.
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A simple colorimetric assay to determine the concentration and proportion of human mercaptalbumin. Pract Lab Med 2022; 31:e00281. [PMID: 35711386 PMCID: PMC9192801 DOI: 10.1016/j.plabm.2022.e00281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/26/2022] [Accepted: 05/16/2022] [Indexed: 12/13/2022] Open
Abstract
Objectives Design and methods Results Conclusions Concentrations of the reduced form of human serum albumin (human mercaptalbumin) were measured by a colorimetric assay using Michler's Hydrol. The assay uses the total thiol concentration to approximate the human mercaptalbumin concentration. Accuracy was improved by alkylating part of the samples and canceling the contribution of the non-thiol component to the colorimetric changes. Combining Michler's Hydrol assay with bromocresol purple assay enabled us to obtain the proportions of mercaptalbumin and non-mercaptalbumin, which correlated with HPLC as a reference method.
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Xu L, Hou H, Farkas B, Keener KM, Garner AL, Tao B. High voltage atmospheric cold plasma modification of bovine serum albumin. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Karuppasamy P, Thiruppathi D, Ganesan M, Rajendran T, Rajagopal S, Sivasubramanian VK, Rajapandian V. Electrocatalytic Oxidation of L-Cysteine, L-Methionine, and Methionine–Glycine Using [Oxoiron(IV)–Salen] Ion Immobilized Glassy Carbon Electrode. Electrocatalysis (N Y) 2021. [DOI: 10.1007/s12678-021-00652-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Yang X, Mao Z, Huang Y, Yan H, Yan Q, Hong J, Fan J, Yao J. Reductively modified albumin attenuates DSS-Induced mouse colitis through rebalancing systemic redox state. Redox Biol 2021; 41:101881. [PMID: 33601276 PMCID: PMC7897995 DOI: 10.1016/j.redox.2021.101881] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 12/22/2020] [Accepted: 01/22/2021] [Indexed: 01/16/2023] Open
Abstract
Albumin (Alb) is the most abundant plasma protein with multiple biological functions, including antioxidative property through its thiol activity. Given that inflammatory bowel disease is associated with a decreased level of Alb and an increased level of Alb oxidation, we asked whether Alb could have a therapeutic effect on colitis. Here we tested this possibility. Bovine serum albumin (BSA) was reductively modified with dithiothreitol (DTT) and administrated via gavage or intraperitoneal injection. Dextran sulfate sodium (DSS)-induced mice colitis was associated with massive oxidative stress, as indicated by the elevated sulfenic acid formation in blood, colon tissues, and feces. Treatment of mice with the reductively modified albumin (r-Alb) attenuated the oxidative stress and reduced local inflammation and tissue injury. These effects of r-Alb were only partially achieved by unmodified Alb and wholly lost after blocking the -SH groups with maleimide. In cultured colon epithelial cells, r-Alb prevented DSS- and H2O2-induced ROS elevation and barrier dysfunction, preceded by inhibition of sulfenic acid formation and P38 activation. Further analysis revealed that Alb was susceptible to H2O2-induced oxidation, and it detoxified H2O2 in a -SH group-dependent way. Moreover, Alb reacted with GSH/GSSG via thiol-disulfide exchange and reciprocally regulated the availability of -SH groups. Collectively, our study shows that r-Alb effectively attenuates DSS colitis via -SH group-mediated antioxidative action. Given that the oxidative stress underlies many life-threatening diseases, r-Alb, functioning as a potent antioxidant, could have a wide range of applications.
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Affiliation(s)
- Xiawen Yang
- Divison of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Zhimin Mao
- Divison of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Yanru Huang
- Divison of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Haizhao Yan
- Department of Molecular Pathology, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Qiaojing Yan
- Divison of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Jingru Hong
- Divison of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Jianglin Fan
- Department of Molecular Pathology, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Jian Yao
- Divison of Molecular Signaling, Department of the Advanced Biomedical Research, Interdisciplinary Graduate School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan.
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14
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A pH-dependent protein stability switch coupled to the perturbed pKa of a single ionizable residue. Biophys Chem 2021; 274:106591. [PMID: 33895555 DOI: 10.1016/j.bpc.2021.106591] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/15/2021] [Accepted: 04/07/2021] [Indexed: 12/31/2022]
Abstract
The contribution of electrostatic interactions in protein stability has not been fully understood. Burial of an ionizable amino acid inside the hydrophobic protein core can affect its ionization equilibrium and shift its pKa differentially in the native (N) and unfolded (U) states of a protein and this coupling between the folding/unfolding cycle and the ionization equilibria of the ionizable residue can substantially influence the protein stability. Here, we studied the coupling of the folding/unfolding cycle with the ionization of a buried ionizable residue in a multi-domain protein, Human Serum Albumin (HSA) using fluorescence spectroscopy. A pH-dependent change in the stability of HSA was observed in the near native pH range (pH 6.0-9.0). The protonation-deprotonation equilibrium of a single thiol residue that is buried in the protein structure was identified to give rise to the pH-dependent protein stability. We quantified the pKa of the thiol residue in the N and the U states. The mean pKa of the thiol in the N state was upshifted by 0.5 units to 8.7 due to the burial of the thiol in the protein structure. Surprisingly, the mean pKa of the thiol in the U state was observed to be downshifted by 1.3 units to 6.9. These results indicate that some charged residues are spatially proximal to the thiol group in the U state. Our results suggest that, in addition to the N state, electrostatic interactions in the U state are important determinants of protein stability.
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15
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Yang Y, Zhou H, Zhang P, Chao W, Zou Y, Yang M. Evaluation of objective nutritional indexes as predictors of worse outcomes in peritoneal dialysis patients. Nutrition 2020; 79-80:110963. [PMID: 33011471 DOI: 10.1016/j.nut.2020.110963] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/05/2020] [Accepted: 07/18/2020] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Objective nutritional indexes have been shown to predict prognosis in some clinical settings. We aimed to explore the predictive values of these indexes in patients undergoing peritoneal dialysis (PD). METHODS This is a single-center retrospective observational study in patients undergoing PD. The controlling nutritional status (CONUT) score, prognostic nutritional index (PNI), and geriatric nutritional risk index (GNRI) were calculated at baseline. The primary outcome was all-cause mortality. The secondary outcome was new-onset cardiocerebrovascular disease (CVD) events. Univariate and multivariate Cox regressions were performed to investigate the association between confounding factors and outcomes. The optimal cutoff values were determined using a receiver operating characteristic curve analysis. We used the Kaplan-Meier curve to compare the outcomes according to the cutoff values. The area under the curve (AUC) was used to test discriminative power of these objective nutritional indexes. RESULTS We analyzed 252 patients undergoing PD at our institution. On the Cox hazard analysis, the CONUT score, PNI, and GNRI were independently associated with all-cause mortality (CONUT: hazard ratio [HR]: 1.496; 95% confidence interval (CI), 1.241-1.804; P < 0.001; PNI: HR: 0.878; 95% CI, 0.815-0.946; P = 0.001; and GNRI: HR: 0.930; 95% CI, 0.885-0.978; P = 0.040) and CVD incidence (CONUT: HR: 1.385; 95% CI, 1.177-1.630; P < 0.001; PNI: HR: 0.885; 95% CI, 0.826-0.949; P = 0.001; and GNRI: HR: 0.936; 95% CI, 0.893-0.981; P = 0.005). In the Kaplan-Meier analysis, patients with a higher CONUT score and lower PNI had significantly higher incidence of all-cause mortality (17.7% versus 3.0%; P = 0.022; 24.3% versus 5.7%, P = 0.003, respectively). As for new-onset CVD, patients with a higher CONUT score, lower PNI, and lower GNRI had higher occurrence rates (19.4% versus 3.0%; P = 0.006; 28.7% versus 7.9%; P = 0.001; 24.4% versus 9.9%; P = 0.035, respectively). The largest AUC to predict all-cause mortality was the CONUT score (AUC: 0.733; 95% CI, 0.674-0.787). For CVD prevalence, the largest AUC was the PNI (AUC: 0.718; 95% CI, 0.658-0.773). CONCLUSIONS Objective nutritional indexes were independently associated with all-cause mortality and CVD events in patients undergoing PD. Moreover, assessments of the CONUT score and PNI may provide more useful predictive values than GNRI.
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Affiliation(s)
- Yan Yang
- Department of Nephrology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Hua Zhou
- Department of Nephrology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Pei Zhang
- Department of Nephrology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Wenying Chao
- Department of Nephrology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Yun Zou
- Department of Nephrology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Min Yang
- Department of Nephrology, The Third Affiliated Hospital of Soochow University, Changzhou, China.
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16
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Fujimura M, Usuki F, Unoki T. Decreased plasma thiol antioxidant capacity precedes neurological signs in a rat methylmercury intoxication model. Food Chem Toxicol 2020; 146:111810. [PMID: 33058990 DOI: 10.1016/j.fct.2020.111810] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 12/13/2022]
Abstract
The main target organ for MeHg is the nervous system, and its neurological dysfunction remains irreversible. Therefore, predictive biomarkers associated with individual susceptibility to MeHg and future clinical severity are needed to protect against the progression of MeHg toxicity. In this study, we demonstrated that plasma thiol antioxidant capacity (-SHp) is a useful predictive biomarker associated with future clinical severity using MeHg-intoxicated rats administered 1 mg/kg/day for 4 weeks. Blood samples were collected from the subclavian vein of each rat once a week to examine total blood mercury concentrations and the levels of plasma oxidative stress markers. Time course analyses of the correlation between these weekly blood examination values and hind limb crossing signs score after 4 weeks of MeHg exposure were performed, and plasma -SHp levels after 2 weeks of MeHg exposure showed strong correlations with future hind limb crossing sign scores. Neuropathological changes also developed in parallel with hind limb crossing sign scores. Quantitative analysis of vacuolar areas in the spinal cord showed a strong correlation with hind limb crossing sign scores. In conclusion, evaluation of plasma -SHp levels allowed us to detect individuals at risk for health damage and could protect the sensitive population against MeHg toxicity.
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Affiliation(s)
- Masatake Fujimura
- Department of Basic Medical Science, National Institute for Minamata Disease, Kumamoto, Japan.
| | - Fusako Usuki
- Division of Neuroimmunology, Joint Research Center for Human Retrovirus Infection, Kagoshima University, Kagoshima, Japan
| | - Takamitsu Unoki
- Department of Basic Medical Science, National Institute for Minamata Disease, Kumamoto, Japan
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17
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Khongorzul P, Ling CJ, Khan FU, Ihsan AU, Zhang J. Antibody–Drug Conjugates: A Comprehensive Review. Mol Cancer Res 2019; 18:3-19. [DOI: 10.1158/1541-7786.mcr-19-0582] [Citation(s) in RCA: 248] [Impact Index Per Article: 49.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 08/22/2019] [Accepted: 10/22/2019] [Indexed: 11/16/2022]
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18
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Jacobsen DW, Hannibal L. Redox signaling in inherited diseases of metabolism. CURRENT OPINION IN PHYSIOLOGY 2019. [DOI: 10.1016/j.cophys.2019.04.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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19
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Wang Z, Zhang P, Liu H, Zhao Z, Xiong L, He W, Kwok RTK, Lam JWY, Ye R, Tang BZ. Robust Serum Albumin-Responsive AIEgen Enables Latent Bloodstain Visualization in High Resolution and Reliability for Crime Scene Investigation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:17306-17312. [PMID: 31020832 DOI: 10.1021/acsami.9b04269] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Bloodstains provide admissible information for crime scene investigators. The ability to resolve latent bloodstains that are commonly found in real scenarios is therefore pivotal to public security. Here, we report a facile approach for invisible bloodstain visualization based on the click reaction between serum albumin and tetraphenylethene maleimide (TPE-MI), an aggregation-induced emission luminogen (AIEgen). Compared to the widely adopted methods based on the harsh catalytic oxidation activity of hemoglobin, this working principle benefits from the specificity of the mild catalyst-free thiol-ene click reaction that improves the reliability and resolution. In addition, the mild conditions preserve DNA information and bloodstain patterns, and the excellent photophysical properties of the AIEgen afford high sensitivity and stability (>1 yr). Such an excellent performance cannot be achieved by conventional AIEgens and aggregation-caused quenching luminogens with similar structures. TPE-MI outperforms the benchmark luminol-based technique in visualizing latent bloodstains as showcased in two mock crime scenes: spattered blood track and transfer blood fingerprint. This disclosed method is an advancement in forensic science that could inspire future development of technology for bloodstain visualization.
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Affiliation(s)
- Zhaoyu Wang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute of Advanced Study, Division of Life Science and State Key Laboratory of Molecular Neuroscience . The Hong Kong University of Science and Technology , Kowloon 999077 , Hong Kong , China
| | - Pengfei Zhang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute of Advanced Study, Division of Life Science and State Key Laboratory of Molecular Neuroscience . The Hong Kong University of Science and Technology , Kowloon 999077 , Hong Kong , China
| | - Haixiang Liu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute of Advanced Study, Division of Life Science and State Key Laboratory of Molecular Neuroscience . The Hong Kong University of Science and Technology , Kowloon 999077 , Hong Kong , China
| | - Zheng Zhao
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute of Advanced Study, Division of Life Science and State Key Laboratory of Molecular Neuroscience . The Hong Kong University of Science and Technology , Kowloon 999077 , Hong Kong , China
- HKUST-Shenzhen Research Institute , Shenzhen 518057 China
| | - Linghong Xiong
- Shenzhen Center for Disease Control and Prevention , Shenzhen 518055 , China
| | - Wei He
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute of Advanced Study, Division of Life Science and State Key Laboratory of Molecular Neuroscience . The Hong Kong University of Science and Technology , Kowloon 999077 , Hong Kong , China
| | - Ryan T K Kwok
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute of Advanced Study, Division of Life Science and State Key Laboratory of Molecular Neuroscience . The Hong Kong University of Science and Technology , Kowloon 999077 , Hong Kong , China
- HKUST-Shenzhen Research Institute , Shenzhen 518057 China
| | - Jacky W Y Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute of Advanced Study, Division of Life Science and State Key Laboratory of Molecular Neuroscience . The Hong Kong University of Science and Technology , Kowloon 999077 , Hong Kong , China
- HKUST-Shenzhen Research Institute , Shenzhen 518057 China
| | - Ruquan Ye
- Department of Chemistry , City University of Hong Kong , Kowloon 99077 , Hong Kong , China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute of Advanced Study, Division of Life Science and State Key Laboratory of Molecular Neuroscience . The Hong Kong University of Science and Technology , Kowloon 999077 , Hong Kong , China
- HKUST-Shenzhen Research Institute , Shenzhen 518057 China
- Guangdong Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 China
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20
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Badea M, Gaman L, Delia C, Ilea A, Leașu F, Henríquez-Hernández LA, Luzardo OP, Rădoi M, Rogozea L. Trends of Lipophilic, Antioxidant and Hematological Parameters Associated with Conventional and Electronic Smoking Habits in Middle-Age Romanians. J Clin Med 2019; 8:E665. [PMID: 31083602 PMCID: PMC6571835 DOI: 10.3390/jcm8050665] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/01/2019] [Accepted: 05/09/2019] [Indexed: 01/15/2023] Open
Abstract
It is known that cigarette smoking is correlated with medical associated inquires. New electronic cigarettes are intensively advertised as an alternative to conventional smoking, but only a few studies demonstrate their harmful potential. A cross-sectional study was designed using 150 subjects from Brasov (Romania), divided into three groups: non-smokers (NS = 58), conventional cigarettes smokers (CS = 58) and electronic cigarettes users (ECS = 34). The aim of this study was to determine levels of some plasma lipophilic and hematological components, and the total antioxidant status that could be associated with the smoking status of the subjects. Serum low density lipoproteins (LDL) cholesterol increased significantly for ECS participants versus NS group (18.9% difference) (p < 0.05). Also, the CS group is characterized by an increase of serum LDL cholesterol (7.9% difference vs. NS), but with no significant statistical difference. The variation of median values of serum very low density lipoproteins (VLDL) was in order NS < ECS < CS, with statistical difference between NS and CS groups (34.6% difference; p = 0.023). When comparing the antioxidant status of the three groups, significant differences (p < 0.05) were obtained between NS vs. CS and NS vs. ECS. Similar behavior was identified for CS and ECS. Statistically significant changes (p < 0.0001) for both vitamin A and vitamin E were identified in the blood of NS vs. CS and NS vs. ECS, and also when comparing vitamin A in the blood of the CS group versus the ECS group (p < 0.05). When all groups were compared, the difference in the white blood cell (WBC) was (p = 0.008). A slight increase in the red blood cell (RBC) count was observed, but with no statistical difference between groups. These results indicated that conventional cigarette and e-cigarette usage promotes the production of excess reactive oxygen species, involving different pathways, different antioxidants and bioactive molecules.
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Affiliation(s)
- Mihaela Badea
- Faculty of Medicine, Transilvania University of Brasov, Brasov 500019, Romania.
| | - Laura Gaman
- "Carol Davila" University of Medicine and Pharmacy, Bucharest 050474, Romania.
| | - Corina Delia
- National Institute for Mother and Child Health "Alessandrescu-Rusescu", Bucharest 20395, Romania.
| | - Anca Ilea
- Faculty of Medicine, Transilvania University of Brasov, Brasov 500019, Romania.
| | - Florin Leașu
- Faculty of Medicine, Transilvania University of Brasov, Brasov 500019, Romania.
| | - Luis Alberto Henríquez-Hernández
- Toxicology Unit, Clinical Sciences Department, Universidad de Las Palmas de Gran Canaria, Paseo Blas Cabrera Felipe, s/n, 35019 Las Palmas de Gran Canaria, Spain.
| | - Octavio P Luzardo
- Toxicology Unit, Clinical Sciences Department, Universidad de Las Palmas de Gran Canaria, Paseo Blas Cabrera Felipe, s/n, 35019 Las Palmas de Gran Canaria, Spain.
| | - Mariana Rădoi
- Faculty of Medicine, Transilvania University of Brasov, Brasov 500019, Romania.
| | - Liliana Rogozea
- Faculty of Medicine, Transilvania University of Brasov, Brasov 500019, Romania.
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21
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Tuzcu A, Baykara RA, Omma A, Acet GK, Dogan E, Cure MC, Sandikci SC, Cure E, Neşelioğlu S, Erel O. Thiol/Disulfide homeostasis in patients with rheumatoid arthritis. ROMANIAN JOURNAL OF INTERNAL MEDICINE = REVUE ROUMAINE DE MEDECINE INTERNE 2019; 57:30-36. [PMID: 30375356 DOI: 10.2478/rjim-2018-0025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Oxidative stress may play an important role in rheumatoid arthritis (RA) etiopathogenesis. The thiol group is a very strong antioxidant. In this study, we aimed to investigate the presence of oxidative stress in patients with RA by evaluating thiol/disulfide homeostasis. MATERIAL AND METHODS A total of 50 female RA patients and 50 healthy female controls were included in this study. Thiol and disulfide values were calculated utilizing novel methods. RESULTS Native thiol (p < 0.001) and total thiol (p < 0.001) levels of RA patients were significantly lower compared to values in the control group. However, the disulfide (p < 0.001) levels of RA patients were strongly higher than in healthy individuals. A negative correlation was found between thiol and disease activity score-28 among the patients, whereas a positive correlation was found between disulfide and disease activity score-28 among the patients. CONCLUSION We found that the thiol-disulfide rate deteriorated in RA patients, with the proportion of disulfide increasing. There is a strong correlation between the decrease in thiol levels, increase in disulfide levels and the disease activity scores.
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Affiliation(s)
- Ayca Tuzcu
- Department of Biochemistry, Malatya Education and Research Hospital, Malatya, Turkey
| | - Rabia Aydogan Baykara
- Department of Physical Medicine and Rehabilitation, Malatya Education and Research Hospital, Malatya, Turkey
| | - Ahmet Omma
- Division of Rheumatology, Department of Internal Medicine, Numune Education and Research Hospital, Ankara, Turkey
| | - Gunseli Karaca Acet
- Department of Physical Medicine and Rehabilitation, Malatya Education and Research Hospital, Malatya, Turkey
| | - Erdal Dogan
- Department of Physical Medicine and Rehabilitation, Malatya Park Private Hospital, Malatya, Turkey
| | | | - Sevinc Can Sandikci
- Division of Rheumatology, Department of Internal Medicine, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Erkan Cure
- Department of Internal Medicine, Camlica Erdem Hospital, Istanbul, Turkey
| | - Salim Neşelioğlu
- Department of Clinical Biochemistry, Faculty of Medicine, Yildirim Beyazit University, Ankara, Turkey
| | - Ozcan Erel
- Department of Clinical Biochemistry, Faculty of Medicine, Yildirim Beyazit University, Ankara, Turkey
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22
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Ikeda S, Maemura K. Interaction Between the Gut-Kidney-Cardiovascular Systems Is Key in Predicting the Prognosis of Patients with Cardiovascular Disease. Int Heart J 2019; 60:7-9. [PMID: 30686803 DOI: 10.1536/ihj.18-672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Satoshi Ikeda
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences
| | - Koji Maemura
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences
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23
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Suo Z, Xiong X, Sun Q, Zhao L, Tang P, Hou Q, Zhang Y, Wu D, Li H. Investigation on the Interaction of Dabrafenib with Human Serum Albumin Using Combined Experiment and Molecular Dynamics Simulation: Exploring the Binding Mechanism, Esterase-like Activity, and Antioxidant Activity. Mol Pharm 2018; 15:5637-5645. [DOI: 10.1021/acs.molpharmaceut.8b00806] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zili Suo
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Xinnuo Xiong
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Qiaomei Sun
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Ludan Zhao
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Peixiao Tang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Quan Hou
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yongkui Zhang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Di Wu
- Key Laboratory of Meat Processing of Sichuan, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Hui Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
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24
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Maciążek-Jurczyk M, Szkudlarek A, Chudzik M, Pożycka J, Sułkowska A. Alteration of human serum albumin binding properties induced by modifications: A review. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:675-683. [PMID: 28526195 DOI: 10.1016/j.saa.2017.05.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 04/23/2017] [Accepted: 05/09/2017] [Indexed: 06/07/2023]
Abstract
Albumin, a major transporting protein in the blood, is the main target of modification that affects the binding of drugs to Sudlow's site I and II. These modification of serum protein moderates its physiological function, and works as a biomarker of some diseases. The main goal of the paper was to explain the possible alteration of human serum albumin binding properties induced by modifications such as glycation, oxidation and ageing, their origin, methods of evaluation and positive and negative meaning described by significant researchers.
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Affiliation(s)
- Małgorzata Maciążek-Jurczyk
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland.
| | - Agnieszka Szkudlarek
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland
| | - Mariola Chudzik
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland
| | - Jadwiga Pożycka
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland
| | - Anna Sułkowska
- Silesian Medical College in Katowice, Mickiewicza 29, 40-085 Katowice, Poland
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25
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Jana M, Majumdar A. C–S Bond Cleavage, Redox Reactions, and Dioxygen Activation by Nonheme Dicobalt(II) Complexes. Inorg Chem 2017; 57:617-632. [DOI: 10.1021/acs.inorgchem.7b02432] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manish Jana
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Amit Majumdar
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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26
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Chipiso K, Simoyi RH. Electrochemical versus Enzymatic in Vitro Oxidations of 6-propyl-2-thiouracil: Identification, Detection, and Characterization of Metabolites. J Phys Chem B 2017; 121:10749-10758. [PMID: 29091454 DOI: 10.1021/acs.jpcb.7b07404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
6-Propylthiouracil, PTU, is a well-known antithyroid drug that has been the mainstay of treatment of Graves' disease. It is, however, also associated with liver toxicity and idiosyncratic toxicity. These toxicities are generally associated with metabolites derived from its bioactivation. In this manuscript, bioactivation of PTU was studied via two separate techniques: electrochemical oxidation and through the use of human liver microsomes. The aim of this work was to compare the bioactivation products of these two techniques. The electrochemical technique was studied online with a mass spectrometer, EC/ESI/MS. The microsomal oxidations were studied in tandem with liquid chromatography. The EC/ESI/MS technique was devoid of the normal reducing biological matrix prevalent in microsomal incubations. The predominant product at 400 mV was the dimeric PTU species with negligible formation of other metabolites. At higher potentials, complete desulfurization of PTU was observed with formation of sulfate. No sulfonic acid was observed, suggesting that the cleavage of the C-S bond was effected at the sulfinic acid stage, releasing a highly reducing sulfur species which is known to give rise to genotoxicity. The microsomal oxidations, surprisingly, showed formation of the unstable sulfenic acid, the S-oxide. Further incubation showed both the sulfinic and sulfonic acids. None of the systems showed any adducts with nucleophiles such as glutathione, showing that none of the reactive metabolites were stable enough to be adducted to nucleophiles in both the biological matrix and the electrochemical oxidizing environment.
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Affiliation(s)
- Kudzanai Chipiso
- Department of Chemistry, Portland State University , Portland, Oregon 97207-0751, United States
| | - Reuben H Simoyi
- Department of Chemistry, Portland State University , Portland, Oregon 97207-0751, United States.,School of Chemistry and Physics, University of KwaZulu-Natal , Westville Campus, Durban 4014, South Africa
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Wada H, Dohi T, Miyauchi K, Doi S, Konishi H, Naito R, Tsuboi S, Ogita M, Kasai T, Okazaki S, Isoda K, Suwa S, Daida H. Prognostic impact of nutritional status assessed by the Controlling Nutritional Status score in patients with stable coronary artery disease undergoing percutaneous coronary intervention. Clin Res Cardiol 2017. [PMID: 28634674 DOI: 10.1007/s00392-017-1132-z] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Recently, malnutrition has been shown to be related to worse clinical outcomes in patients with heart failure. However, the association between nutritional status and clinical outcomes in patients with coronary artery disease (CAD) remains unclear. We investigated the prognostic value of malnutrition assessed by the Controlling Nutritional Status (CONUT; range 0-12, higher = worse, consisting of serum albumin, cholesterol and lymphocytes) score in patients with CAD. METHODS The CONUT score was measured on admission in a total of 1987 patients with stable CAD who underwent elective percutaneous coronary intervention (PCI) between 2000 and 2011. Patients were divided into two groups according to their CONUT score (0-1 vs. ≥2). The incidence of major adverse cardiac events (MACE), including all-cause death and non-fatal myocardial infarction, was evaluated. RESULTS The median CONUT score was 1 (interquartile range 0-2). During the median follow-up of 7.4 years, 342 MACE occurred (17.2%). Kaplan-Meier curves revealed that patients with high CONUT scores had higher rates of MACE (log-rank p < 0.0001). High CONUT scores showed a significant increase in the incidence of MACE compared with low CONUT scores, even after adjusting for confounding factors (hazard ratio: 1.64, 95% confidence interval 1.30-2.07, p < 0.0001). Adding CONUT scores to a baseline model with established risk factors improved the C-index (p = 0.02), net reclassification improvement (p = 0.004) and integrated discrimination improvement (p = 0.0003). CONCLUSIONS Nutritional status assessed by the CONUT score was significantly associated with long-term clinical outcomes in patients with CAD. Pre-PCI assessment of the CONUT score may provide useful prognostic information.
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Affiliation(s)
- Hideki Wada
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Tomotaka Dohi
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| | - Katsumi Miyauchi
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Shinichiro Doi
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hirokazu Konishi
- Department of Cardiovascular Medicine, Juntendo University Shizuoka Hospital, Izunokuni, Shizuoka, Japan
| | - Ryo Naito
- Department of Cardiovascular Medicine, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan
| | - Shuta Tsuboi
- Department of Cardiovascular Medicine, Juntendo University Shizuoka Hospital, Izunokuni, Shizuoka, Japan
| | - Manabu Ogita
- Department of Cardiovascular Medicine, Juntendo University Shizuoka Hospital, Izunokuni, Shizuoka, Japan
| | - Takatoshi Kasai
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Shinya Okazaki
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kikuo Isoda
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Satoru Suwa
- Department of Cardiovascular Medicine, Juntendo University Shizuoka Hospital, Izunokuni, Shizuoka, Japan
| | - Hiroyuki Daida
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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Wada H, Dohi T, Miyauchi K, Shitara J, Endo H, Doi S, Naito R, Konishi H, Tsuboi S, Ogita M, Kasai T, Okazaki S, Isoda K, Suwa S, Daida H. Impact of serum albumin levels on long-term outcomes in patients undergoing percutaneous coronary intervention. Heart Vessels 2017; 32:1085-1092. [PMID: 28429111 DOI: 10.1007/s00380-017-0981-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 04/14/2017] [Indexed: 12/18/2022]
Abstract
Epidemiological studies have demonstrated an association between low serum albumin levels and both coronary artery disease (CAD) and mortality. However, the long-term clinical impact of low serum albumin level in patients with CAD undergoing percutaneous coronary intervention (PCI) has not yet been fully investigated. We studied 2860 all-comer patients with CAD who underwent their first PCI and had data available for pre-procedural serum albumin between 2000 and 2011. Patients were assigned to tertiles based on pre-procedural albumin levels. We evaluated the incidence of major adverse cardiac events (MACE), including all-cause death and nonfatal myocardial infarction. Mean albumin level was 4.0 ± 0.5 g/dL. Lower albumin levels were associated with older age, lower body mass index (BMI), and higher prevalences of female sex, ACS and chronic kidney disease (CKD). During the median follow-up period of 7.4 years, Kaplan-Meier curves showed ongoing divergence in rates of MACE among albumin tertiles (albumin <3.8 g/dl: 44.3% vs. 3.8-4.1 g/dl: 38.0% vs. >4.1 g/dl: 22.9%; log-rank p < 0.0001). After adjusting for established cardiovascular risk factors including age, acute coronary syndrome, BMI and CKD, serum albumin levels were significantly associated with incidence of MACE (HR 1.74 per 1-g/dl decrease, 95% CI 1.34-2.26, p < 0.0001) and all-cause mortality (HR 1.74, 95% CI 1.30-2.33, p = 0.0002). Pre-PCI low serum albumin level was associated with worse long-term outcomes, independent of traditional risk factors. Assessing albumin levels may allow risk stratification in patients with CAD undergoing PCI.
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Affiliation(s)
- Hideki Wada
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Tomotaka Dohi
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| | - Katsumi Miyauchi
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Jun Shitara
- Department of Cardiovascular Medicine, Juntendo University Shizuoka Hospital, Izunokuni, Shizuoka, Japan
| | - Hirohisa Endo
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Shinichiro Doi
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Ryo Naito
- Department of Cardiovascular Medicine, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan
| | - Hirokazu Konishi
- Department of Cardiovascular Medicine, Juntendo University Shizuoka Hospital, Izunokuni, Shizuoka, Japan
| | - Shuta Tsuboi
- Department of Cardiovascular Medicine, Juntendo University Shizuoka Hospital, Izunokuni, Shizuoka, Japan
| | - Manabu Ogita
- Department of Cardiovascular Medicine, Juntendo University Shizuoka Hospital, Izunokuni, Shizuoka, Japan
| | - Takatoshi Kasai
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Shinya Okazaki
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kikuo Isoda
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Satoru Suwa
- Department of Cardiovascular Medicine, Juntendo University Shizuoka Hospital, Izunokuni, Shizuoka, Japan
| | - Hiroyuki Daida
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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Spanidis Y, Priftis A, Stagos D, Stravodimos GA, Leonidas DD, Spandidos DA, Tsatsakis AM, Kouretas D. Oxidation of human serum albumin exhibits inter-individual variability after an ultra-marathon mountain race. Exp Ther Med 2017; 13:2382-2390. [PMID: 28565852 PMCID: PMC5443265 DOI: 10.3892/etm.2017.4268] [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: 01/06/2017] [Accepted: 03/14/2017] [Indexed: 11/07/2022] Open
Abstract
The aim of this study was to examine the oxidation of human serum albumin (HSA) caused by oxidative stress following exhaustive and demanding exercise, such as an ultra-marathon race. For this purpose, blood samples from 12 adult runners who underwent a 103 km mountain ultra-marathon race were collected before the race, and also at 24, 48 and 72 h post-race. HSA was partially purified using affinity chromatography and consequently subjected to western blot analysis in order to determine the levels of disulfide dimers indicating oxidation. For reasons of comparison, the results were correlated with those from a previous study, in which the same samples were analyzed using different oxidative stress markers. The results revealed a good correlation between albumin dimers and protein carbonyls at all time points, while there was also a significant correlation with static oxidation reduction potential at 24 h, and a negative correlation with capacity oxidation reduction potential at 24 and 48 h. In addition, an individual analysis of albumin dimers exhibited great inter-individual differences, indicating the variation of HSA oxidation between different athletes. Namely, in some athletes, HSA seemed to be the main oxidation target of serum proteins, while in other athletes, there was even a reduction of HSA. This inter-individual variability in the oxidation of HSA may suggest that different interventions (e.g., through diet) may be required in order to confront the effects on athletes following strenuous exercise. On the whole, this study suggests the importance of the assessment of albumin dimers as a predictive marker for exercise-induced oxidative stress.
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Affiliation(s)
- Ypatios Spanidis
- Laboratory of Animal Physiology, Department of Biochemistry and Biotechnology, University of Thessaly, Larissa 41500, Greece
| | - Alexandros Priftis
- Laboratory of Animal Physiology, Department of Biochemistry and Biotechnology, University of Thessaly, Larissa 41500, Greece
| | - Dimitrios Stagos
- Laboratory of Animal Physiology, Department of Biochemistry and Biotechnology, University of Thessaly, Larissa 41500, Greece
| | - George A Stravodimos
- Laboratory of Structural and Functional Biochemistry, Department of Biochemistry and Biotechnology, University of Thessaly, Larissa 41500, Greece
| | - Demetres D Leonidas
- Laboratory of Structural and Functional Biochemistry, Department of Biochemistry and Biotechnology, University of Thessaly, Larissa 41500, Greece
| | - Demetrios A Spandidos
- Laboratory of Clinical Virology, University of Crete, Medical School, Heraklion 71409, Greece
| | - Aristides M Tsatsakis
- Department of Forensic Sciences and Toxicology, Medical School, University of Crete, Heraklion 71003, Greece
| | - Demetrios Kouretas
- Laboratory of Animal Physiology, Department of Biochemistry and Biotechnology, University of Thessaly, Larissa 41500, Greece
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Wada H, Dohi T, Miyauchi K, Doi S, Naito R, Konishi H, Tsuboi S, Ogita M, Kasai T, Okazaki S, Isoda K, Suwa S, Daida H. Independent and Combined Effects of Serum Albumin and C-Reactive Protein on Long-Term Outcomes of Patients Undergoing Percutaneous Coronary Intervention. Circ J 2017; 81:1293-1300. [DOI: 10.1253/circj.cj-17-0124] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hideki Wada
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine
| | - Tomotaka Dohi
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine
| | - Katsumi Miyauchi
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine
| | - Shinichiro Doi
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine
| | - Ryo Naito
- Department of Cardiovascular Medicine, Juntendo University Urayasu Hospital
| | | | - Shuta Tsuboi
- Department of Cardiology, Juntendo University Shizuoka Hospital
| | - Manabu Ogita
- Department of Cardiology, Juntendo University Shizuoka Hospital
| | - Takatoshi Kasai
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine
| | - Shinya Okazaki
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine
| | - Kikuo Isoda
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine
| | - Satoru Suwa
- Department of Cardiology, Juntendo University Shizuoka Hospital
| | - Hiroyuki Daida
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine
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31
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Takić MM, Jovanović VB, Pavićević ID, Uzelac TN, Aćimović JM, Ristić-Medić DK, Mandić LM. Binding of enterolactone and enterodiol to human serum albumin: increase of cysteine-34 thiol group reactivity. Food Funct 2016; 7:1217-26. [PMID: 26838610 DOI: 10.1039/c5fo01346a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The interaction of polyphenolic molecules with human serum albumin (HSA) could lead to changes in the reactivity of the HSA Cys34 thiol group (HSA-SH). The influences of enterolactone (EL) and enterodiol (ED) binding on HSA-SH reactivity in fatty acid (FA)-free HSA, and in HSA with bound stearic acid (S) in S/HSA molar ratios of 1:1 and 4:1, were investigated by the determination of the pseudo first order rate constants (k') for the thiol reaction with 5,5'-dithiobis-(2-nitrobenzoic acid). The binding affinities and binding sites of EL and ED were also determined, using fluorescence measurements of the intrinsic fluorescence of Trp214 and diazepam (binding site marker). EL and ED binding to HSA increased the reactivity of HSA-SH in all assayed HSA-enterolignan complexes by 9.1-33.1%. The strongest effects were obtained for FA-free HSA-enterolignan complexes. S modulated/reduced the effect of EL on HSA-SH reactivity, while its influence on the effect of ED was negligible. The binding of enterolignans to HSA was investigated: the binding constants were the highest for FA-free HSA (EL: 11.64 × 10(4) M(-1) and ED: 5.59 × 10(4) M(-1) at 37 °C) and the lowest for S/HSA 4:1-enterolignan complexes (EL: 2.43 × 10(4) M(-1) and ED: 1.92 × 10(4) M(-1)). When the S/HSA ratio was increased, the binding affinities and number of binding sites for EL and ED were decreased. At the same time, a high correlation between binding constants and increased Cys34 reactivity was found (r = 0.974). Competitive experiments using diazepam indicated that the binding of ED and of EL was located in the hydrophobic pocket of site II in HSA. Overall, it is evident that stearic acid could modulate the enterolignan effects on HSA-SH reactivity as well as their binding to HSA. This finding could be important for pharmacokinetics and the expression of enterolignan antioxidant effects in vivo after an intake of lignan rich food.
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Affiliation(s)
- Marija M Takić
- Institute for Medical Research, Center of research excellence in nutrition and metabolism, University of Belgrade, Belgrade, Serbia
| | - Vesna B Jovanović
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Ivan D Pavićević
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Tamara N Uzelac
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Jelena M Aćimović
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Danijela K Ristić-Medić
- Institute for Medical Research, Center of research excellence in nutrition and metabolism, University of Belgrade, Belgrade, Serbia
| | - Ljuba M Mandić
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
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John H, Willoh S, Hörmann P, Siegert M, Vondran A, Thiermann H. Procedures for Analysis of Dried Plasma Using Microsampling Devices to Detect Sulfur Mustard-Albumin Adducts for Verification of Poisoning. Anal Chem 2016; 88:8787-94. [DOI: 10.1021/acs.analchem.6b02199] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Harald John
- Bundeswehr Institute of Pharmacology and Toxicology, 80937 Munich, Germany
| | - Sophia Willoh
- University of Applied Sciences and Arts Coburg, Department
of Applied Sciences, Coburg, Germany
| | - Philipp Hörmann
- University of Applied Sciences Weihenstephan-Triesdorf, Department of Biotechnology and Bioinformatics, Weihenstephan, Germany
| | - Markus Siegert
- Department
of Chemistry, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Antje Vondran
- University of Applied Sciences and Arts Coburg, Department
of Applied Sciences, Coburg, Germany
| | - Horst Thiermann
- Bundeswehr Institute of Pharmacology and Toxicology, 80937 Munich, Germany
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Plantier JL, Duretz V, Devos V, Urbain R, Jorieux S. Comparison of antioxidant properties of different therapeutic albumin preparations. Biologicals 2016; 44:226-233. [DOI: 10.1016/j.biologicals.2016.04.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 03/04/2016] [Accepted: 04/11/2016] [Indexed: 01/29/2023] Open
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Lu J, Jiang F, Lu A, Zhang G. Linkers Having a Crucial Role in Antibody-Drug Conjugates. Int J Mol Sci 2016; 17:561. [PMID: 27089329 PMCID: PMC4849017 DOI: 10.3390/ijms17040561] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 03/29/2016] [Accepted: 04/08/2016] [Indexed: 11/16/2022] Open
Abstract
Antibody-drug conjugates (ADCs) comprised of a desirable monoclonal antibody, an active cytotoxic drug and an appropriate linker are considered to be an innovative therapeutic approach for targeted treatment of various types of tumors and cancers, enhancing the therapeutic parameter of the cytotoxic drug and reducing the possibility of systemic cytotoxicity. An appropriate linker between the antibody and the cytotoxic drug provides a specific bridge, and thus helps the antibody to selectively deliver the cytotoxic drug to tumor cells and accurately releases the cytotoxic drug at tumor sites. In addition to conjugation, the linkers maintain ADCs' stability during the preparation and storage stages of the ADCs and during the systemic circulation period. The design of linkers for ADCs is a challenge in terms of extracellular stability and intracellular release, and intracellular circumstances, such as the acid environment, the reducing environment and cathepsin, are considered as the catalysts to activate the triggers for initiating the cleavage of ADCs. This review discusses the linkers used in the clinical and marketing stages for ADCs and details the fracture modes of the linkers for the further development of ADCs.
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Affiliation(s)
- Jun Lu
- Institute for Advancing Translational Medicine in Bone & Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
- Institute of Integrated Bioinfomedicine & Translational Science, Hong Kong Baptist University Shenzhen Research Institute and Continuing Education, Shenzhen 518000, China.
| | - Feng Jiang
- Institute for Advancing Translational Medicine in Bone & Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
- Institute of Integrated Bioinfomedicine & Translational Science, Hong Kong Baptist University Shenzhen Research Institute and Continuing Education, Shenzhen 518000, China.
- Institute of Precision Medicine and Innovative Drug Discovery, HKBU (Haimen) Institute of Science and Technology, Haimen 226100, China.
| | - Aiping Lu
- Institute for Advancing Translational Medicine in Bone & Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
- Institute of Integrated Bioinfomedicine & Translational Science, Hong Kong Baptist University Shenzhen Research Institute and Continuing Education, Shenzhen 518000, China.
| | - Ge Zhang
- Institute for Advancing Translational Medicine in Bone & Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
- Institute of Integrated Bioinfomedicine & Translational Science, Hong Kong Baptist University Shenzhen Research Institute and Continuing Education, Shenzhen 518000, China.
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35
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Piskarev IM, Burkhina OE, Ivanova IP. Redox processes induced in methemoglobin solution by mercury lamp UV light and spark-discharge plasma radiation. HIGH ENERGY CHEMISTRY 2016. [DOI: 10.1134/s0018143915060132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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36
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Parmar AK, Menon SK. Estimation of postmortem interval through albumin in CSF by simple dye binding method. Sci Justice 2015; 55:388-93. [DOI: 10.1016/j.scijus.2015.07.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 07/25/2015] [Accepted: 07/31/2015] [Indexed: 10/23/2022]
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A Multidisciplinary Biospecimen Bank of Renal Cell Carcinomas Compatible with Discovery Platforms at Mayo Clinic, Scottsdale, Arizona. PLoS One 2015; 10:e0132831. [PMID: 26181416 PMCID: PMC4504486 DOI: 10.1371/journal.pone.0132831] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 06/19/2015] [Indexed: 11/19/2022] Open
Abstract
To address the need to study frozen clinical specimens using next-generation RNA, DNA, chromatin immunoprecipitation (ChIP) sequencing and protein analyses, we developed a biobank work flow to prospectively collect biospecimens from patients with renal cell carcinoma (RCC). We describe our standard operating procedures and work flow to annotate pathologic results and clinical outcomes. We report quality control outcomes and nucleic acid yields of our RCC submissions (N=16) to The Cancer Genome Atlas (TCGA) project, as well as newer discovery platforms, by describing mass spectrometry analysis of albumin oxidation in plasma and 6 ChIP sequencing libraries generated from nephrectomy specimens after histone H3 lysine 36 trimethylation (H3K36me3) immunoprecipitation. From June 1, 2010, through January 1, 2013, we enrolled 328 patients with RCC. Our mean (SD) TCGA RNA integrity numbers (RINs) were 8.1 (0.8) for papillary RCC, with a 12.5% overall rate of sample disqualification for RIN <7. Banked plasma had significantly less albumin oxidation (by mass spectrometry analysis) than plasma kept at 25 °C (P<.001). For ChIP sequencing, the FastQC score for average read quality was at least 30 for 91% to 95% of paired-end reads. In parallel, we analyzed frozen tissue by RNA sequencing; after genome alignment, only 0.2% to 0.4% of total reads failed the default quality check steps of Bowtie2, which was comparable to the disqualification ratio (0.1%) of the 786-O RCC cell line that was prepared under optimal RNA isolation conditions. The overall correlation coefficients for gene expression between Mayo Clinic vs TCGA tissues ranged from 0.75 to 0.82. These data support the generation of high-quality nucleic acids for genomic analyses from banked RCC. Importantly, the protocol does not interfere with routine clinical care. Collections over defined time points during disease treatment further enhance collaborative efforts to integrate genomic information with outcomes.
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Decreased plasma thiol antioxidant barrier and selenoproteins as potential biomarkers for ongoing methylmercury intoxication and an individual protective capacity. Arch Toxicol 2015; 90:917-26. [DOI: 10.1007/s00204-015-1528-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 05/05/2015] [Indexed: 10/23/2022]
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Appolinário PP, Medinas DB, Chaves-Filho AB, Genaro-Mattos TC, Cussiol JRR, Netto LES, Augusto O, Miyamoto S. Oligomerization of Cu,Zn-Superoxide Dismutase (SOD1) by Docosahexaenoic Acid and Its Hydroperoxides In Vitro: Aggregation Dependence on Fatty Acid Unsaturation and Thiols. PLoS One 2015; 10:e0125146. [PMID: 25928076 PMCID: PMC4415921 DOI: 10.1371/journal.pone.0125146] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 03/16/2015] [Indexed: 12/21/2022] Open
Abstract
Docosahexaenoic acid (C22:6, n-3, DHA) is a polyunsaturated fatty acid highly enriched in the brain. This fatty acid can be easily oxidized yielding hydroperoxides as primary products. Cu, Zn-Superoxide dismutase (SOD1) aggregation is a common hallmark of Amyotrophic Lateral Sclerosis (ALS) and the molecular mechanisms behind their formation are not completely understood. Here we investigated the effect of DHA and its hydroperoxides (DHAOOH) on human SOD1 oligomerization in vitro. DHA induced the formation of high-molecular-weight (HMW) SOD1 species (>700 kDa). Aggregation was dependent on free thiols and occurred primarily with the protein in its apo-form. SOD1 incubation with DHA was accompanied by changes in protein structure leading to exposure of protein hydrophobic patches and formation of non-amyloid aggregates. Site-directed mutagenesis studies demonstrated that Cys 6 and Cys 111 in wild-type and Cys 6 in ALS-linked G93A mutant are required for aggregation. In contrast, DHAOOH did not induce HMW species formation but promoted abnormal covalent dimerization of apo-SOD1 that was resistant to SDS and thiol reductants. Overall, our data demonstrate that DHA and DHAOOH induce distinct types of apo-SOD1 oligomerization leading to the formation of HMW and low-molecular-weight species, respectively.
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Affiliation(s)
| | - Danilo Bilches Medinas
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Adriano B. Chaves-Filho
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Thiago C. Genaro-Mattos
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - José Renato Rosa Cussiol
- Departamento de Biologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | | | - Ohara Augusto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Sayuri Miyamoto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
- * E-mail:
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40
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Trnková L, Dršata J, Boušová I. Oxidation as an important factor of protein damage: Implications for Maillard reaction. J Biosci 2015; 40:419-39. [DOI: 10.1007/s12038-015-9523-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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41
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Rosas-Díaz M, Camarillo-Cadena M, Hernández-Arana A, Ramón-Gallegos E, Medina-Navarro R. Antioxidant capacity and structural changes of human serum albumin from patients in advanced stages of diabetic nephropathy and the effect of the dialysis. Mol Cell Biochem 2015; 404:193-201. [DOI: 10.1007/s11010-015-2378-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 03/05/2015] [Indexed: 11/29/2022]
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42
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Piskarev IM, Ivanova IP, Trofimova SV, Burkhina OE. Redox processes induced in albumin solution by UV and spark plasma radiation. HIGH ENERGY CHEMISTRY 2014. [DOI: 10.1134/s0018143915010099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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43
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WITHDRAWN: Cigarette smoke induces alterations in the drug binding properties of human serum albumin. Blood Cells Mol Dis 2014. [DOI: 10.1016/j.bcmd.2014.04.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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44
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Ozgunes N, Oztas Y, Unal S, Yaman H. Structural modification of plasma albumin in sickle cell anemia. Acta Haematol 2014; 133:67-9. [PMID: 25139371 DOI: 10.1159/000362860] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 04/10/2014] [Indexed: 01/25/2023]
Affiliation(s)
- Nuriman Ozgunes
- Department of Medical Biochemistry, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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45
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Borges CR, Rehder DS, Jensen S, Schaab MR, Sherma ND, Yassine H, Nikolova B, Breburda C. Elevated plasma albumin and apolipoprotein A-I oxidation under suboptimal specimen storage conditions. Mol Cell Proteomics 2014; 13:1890-9. [PMID: 24736286 DOI: 10.1074/mcp.m114.038455] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
S-cysteinylated albumin and methionine-oxidized apolipoprotein A-I (apoA-I) have been posed as candidate markers of diseases associated with oxidative stress. Here, a dilute-and-shoot form of LC-electrospray ionization-MS requiring half a microliter of blood plasma was employed to simultaneously quantify the relative abundance of these oxidized proteoforms in samples stored at -80 °C, -20 °C, and room temperature and exposed to multiple freeze-thaw cycles and other adverse conditions in order to assess the possibility that protein oxidation may occur as a result of poor sample storage or handling. Samples from a healthy donor and a participant with poorly controlled type 2 diabetes started at the same low level of protein oxidation and behaved similarly; significant increases in albumin oxidation via S-cysteinylation were found to occur within hours at room temperature and days at -20 °C. Methionine oxidation of apoA-I took place on a longer time scale, setting in after albumin oxidation reached a plateau. Freeze-thaw cycles had a minimal effect on protein oxidation. In matched collections, protein oxidation in serum was the same as that in plasma. Albumin and apoA-I oxidation were not affected by sample headspace or the degree to which vials were sealed. ApoA-I, however, was unexpectedly found to oxidize faster in samples with lower surface-area-to-volume ratios. An initial survey of samples from patients with inflammatory conditions normally associated with elevated oxidative stress-including acute myocardial infarction and prostate cancer-demonstrated a lack of detectable apoA-I oxidation. Albumin S-cysteinylation in these samples was consistent with known but relatively brief exposures to temperatures above -30 °C (the freezing point of blood plasma). Given their properties and ease of analysis, these oxidized proteoforms, once fully validated, may represent the first markers of blood plasma specimen integrity based on direct measurement of oxidative molecular damage that can occur under suboptimal storage conditions.
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Affiliation(s)
- Chad R Borges
- From the ‡Department of Chemistry & Biochemistry, Arizona State University, Tempe, Arizona 85287; §Biodesign Institute at Arizona State University, Tempe, Arizona 85287;
| | - Douglas S Rehder
- §Biodesign Institute at Arizona State University, Tempe, Arizona 85287
| | - Sally Jensen
- From the ‡Department of Chemistry & Biochemistry, Arizona State University, Tempe, Arizona 85287
| | - Matthew R Schaab
- §Biodesign Institute at Arizona State University, Tempe, Arizona 85287
| | - Nisha D Sherma
- §Biodesign Institute at Arizona State University, Tempe, Arizona 85287
| | - Hussein Yassine
- ‖Department of Medicine, University of Southern California, Los Angeles, California 90033
| | | | - Christian Breburda
- **Maricopa Integrated Health Systems, Phoenix, Arizona 85008; ‡‡College of Medicine, University of Arizona, Phoenix, Arizona 85004
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46
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Clerici M, Colombo G, Secundo F, Gagliano N, Colombo R, Portinaro N, Giustarini D, Milzani A, Rossi R, Dalle-Donne I. Cigarette smoke induces alterations in the drug-binding properties of human serum albumin. Blood Cells Mol Dis 2014; 52:166-74. [PMID: 24388826 DOI: 10.1016/j.bcmd.2013.12.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Accepted: 10/27/2013] [Indexed: 12/01/2022]
Abstract
Albumin is the most abundant plasma protein and serves as a transport and depot protein for numerous endogenous and exogenous compounds. Earlier we had shown that cigarette smoke induces carbonylation of human serum albumin (HSA) and alters its redox state. Here, the effect of whole-phase cigarette smoke on HSA ligand-binding properties was evaluated by equilibrium dialysis and size-exclusion HPLC or tryptophan fluorescence. The binding of salicylic acid and naproxen to cigarette smoke-oxidized HSA resulted to be impaired, unlike that of curcumin and genistein, chosen as representative ligands. Binding of the hydrophobic fluorescent probe 4,4'-bis(1-anilino-8-naphtalenesulfonic acid) (bis-ANS), intrinsic tryptophan fluorescence, and susceptibility to enzymatic proteolysis revealed slight changes in albumin conformation. These findings suggest that cigarette smoke-induced modifications of HSA may affect the binding, transport and bioavailability of specific ligands in smokers.
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Affiliation(s)
- Marco Clerici
- Department of Biosciences, Università degli Studi di Milano, Milan, Italy; Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Graziano Colombo
- Department of Biosciences, Università degli Studi di Milano, Milan, Italy
| | - Francesco Secundo
- Istituto di Chimica del Riconoscimento Molecolare, CNR, Milan, Italy
| | - Nicoletta Gagliano
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Roberto Colombo
- Department of Biosciences, Università degli Studi di Milano, Milan, Italy
| | - Nicola Portinaro
- Department of Medical Biotechnology and Translational Medicine, Clinica ortopedica e traumatologica, Università degli Studi di Milano and Istituto Clinico Humanitas, Rozzano, Milan, Italy
| | | | - Aldo Milzani
- Department of Biosciences, Università degli Studi di Milano, Milan, Italy
| | - Ranieri Rossi
- Department of Life Sciences, University of Siena, Siena, Italy
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47
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Marie AL, Przybylski C, Gonnet F, Daniel R, Urbain R, Chevreux G, Jorieux S, Taverna M. Capillary zone electrophoresis and capillary electrophoresis-mass spectrometry for analyzing qualitative and quantitative variations in therapeutic albumin. Anal Chim Acta 2013; 800:103-10. [DOI: 10.1016/j.aca.2013.09.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 07/29/2013] [Accepted: 09/11/2013] [Indexed: 01/06/2023]
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48
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Comparative proteomic analysis of thiol proteins in the liver after oxidative stress induced by diethylnitrosamine. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2013; 1834:2528-38. [PMID: 23994225 DOI: 10.1016/j.bbapap.2013.08.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2013] [Revised: 07/21/2013] [Accepted: 08/13/2013] [Indexed: 12/18/2022]
Abstract
Conversion of protein -SH groups to disulfides is an early event during protein oxidation, which has prompted great interest in the study of thiol proteins. Chemical carcinogenesis is strongly associated with the formation of reactive oxygen species (ROS). The goal of this study was to detect thiol proteins that are sensitive to ROS generated during diethylnitrosamine (DEN) metabolism in the rat liver. DEN has been widely used to induce experimental hepatocellular carcinoma. We used modified redox-differential gel electrophoresis (redox-DIGE method) and mass spectrometry MALDI-TOF/TOF to identify differential oxidation protein profiles associated with carcinogen exposure. Our analysis revealed a time-dependent increase in the number of oxidized thiol proteins after carcinogen treatment; some of these proteins have antioxidant activity, including thioredoxin, peroxirredoxin 2, peroxiredoxin 6 and glutathione S-transferase alpha-3. According to functional classifications, the identified proteins in our study included chaperones, oxidoreductases, activity isomerases, hydrolases and other protein-binding partners. This study demonstrates that oxidative stress generated by DEN tends to increase gradually through DEN metabolism, causes time-dependent necrosis in the liver and has an oxidative effect on thiol proteins, thereby increasing the number of oxidized thiol proteins. Furthermore, these events occurred during the hepatocarcinogenesis initiation period.
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49
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Kim S, Kang S. Serum albumin levels: a simple answer to a complex problem? Are we on the right track of assessing metabolic syndrome? Endocrinol Metab (Seoul) 2013; 28:17-9. [PMID: 24396645 PMCID: PMC3811806 DOI: 10.3803/enm.2013.28.1.17] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Sohee Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Shinae Kang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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50
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Dimovasilis PA, Prodromidis MI. Bismuth-dispersed xerogel-based composite films for trace Pb(II) and Cd(II) voltammetric determination. Anal Chim Acta 2013; 769:49-55. [DOI: 10.1016/j.aca.2013.01.040] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 01/15/2013] [Accepted: 01/18/2013] [Indexed: 10/27/2022]
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