1
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Thakur MR, Nachane SS, Tupe RS. Alleviation of albumin glycation-induced diabetic cardiomyopathy by L-Arginine: Insights into Nrf-2 signaling. Int J Biol Macromol 2024; 264:130478. [PMID: 38428781 DOI: 10.1016/j.ijbiomac.2024.130478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 02/19/2024] [Accepted: 02/26/2024] [Indexed: 03/03/2024]
Abstract
In hyperglycemia, accelerated glycation and oxidative stress give rise to many diabetic complications, such as diabetic cardiomyopathy (DCM). Glycated human serum albumin (GHSA) has disturbed structural integrity and hampered functional capabilities. When GHSA accumulates around cardiac cells, Nrf-2 is dysregulated, aiding oxidative stress. L-Arginine (L-Arg) is prescribed to patients with diabetes and cardiovascular diseases. This research contributes to the mechanistic insights on antiglycation and antioxidant potential of L-Arg in alleviating DCM. HSA was glycated with methylglyoxal in the presence of L-Arg (20-640 mM). Structural and functional modifications of HSA were studied. L-Arg and HSA, GHSA interactions, and thermodynamics were determined by steady-state fluorescence. H9c2 cardiomyocytes were given treatments of GHSA-L-Arg along with the inhibitor of the receptor of AGEs. Cellular antioxidant levels, detoxification enzyme activities were measured. Gene, protein expressions, and immunofluorescence data examined the activation and nuclear translocation of Nrf-2 during glycation and oxidative stress. L-Arg protected HSA from glycation-induced structural and functional modifications. The binding affinity of L-Arg was more towards HSA (104 M-1). L-Arg, specifically at lower concentration (20 mM), upregulated Nrf-2 gene, protein expressions and facilitated its nuclear translocation by activating Nrf-2 signaling. The study concluded that L-Arg can be of therapeutic advantage in glycation-induced DCM and associated oxidative stress.
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Affiliation(s)
- Muskan R Thakur
- Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115, Maharashtra State, India
| | - Sampada S Nachane
- Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115, Maharashtra State, India
| | - Rashmi S Tupe
- Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115, Maharashtra State, India.
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2
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Coukos JS, Moellering RE. Methylglyoxal Forms Diverse Mercaptomethylimidazole Crosslinks with Thiol and Guanidine Pairs in Endogenous Metabolites and Proteins. ACS Chem Biol 2021; 16:2453-2461. [PMID: 34581579 PMCID: PMC8609522 DOI: 10.1021/acschembio.1c00553] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Methylglyoxal (MGO) is a reactive byproduct formed by several metabolic precursors, the most notable being triosephosphates in glycolysis. While many MGO-mediated adducts have been described, the reactivity and specific biomolecular targets of MGO remain incompletely mapped. Based on our recent discovery that MGO can form stable mercaptomethylimidazole crosslinks between cysteine and arginine (MICA) in proteins, we hypothesized that MGO may participate in myriad reactions with biologically relevant guanidines and thiols in proteins, metabolites, and perhaps other biomolecules. Herein, we performed steady-state and kinetic analyses of MGO reactivity with several model thiols, guanidines, and biguanide drugs to establish the plausible and prevalent adducts formed by MGO in proteins, peptides, and abundant cellular metabolites. We identified several novel, stable MICA metabolites that form in vitro and in cells, as well as a novel intermolecular post-translational MICA modification of surface cysteines in proteins. These data confirm that kinetic trapping of free MGO by thiols occurs rapidly and can decrease formation of more stable imidazolone (MG-H1) arginine adducts. However, reversible hemithioacetal adducts can go on to form stable MICA modifications in an inter- and intramolecular fashion with abundant or proximal guanidines, respectively. Finally, we discovered that intracellular MICA-glutathione metabolites are recognized and exported by the efflux pump MRP1, providing a parallel and perhaps complementary pathway for MGO detoxification working alongside the glyoxalase pathway. These data provide new insights into the plausible reactions involving MGO in cells and tissues, as well as several new molecular species in proteins and metabolites for further study.
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Affiliation(s)
- John S. Coukos
- Department of Chemistry, The University of Chicago, 929 E 57th Street, Chicago, Illinois 60637, United States
| | - Raymond E. Moellering
- Department of Chemistry, The University of Chicago, 929 E 57th Street, Chicago, Illinois 60637, United States
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3
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Andreeva A, Bekkhozhin Z, Omertassova N, Baizhumanov T, Yeltay G, Akhmetali M, Toibazar D, Utepbergenov D. The apparent deglycase activity of DJ-1 results from the conversion of free methylglyoxal present in fast equilibrium with hemithioacetals and hemiaminals. J Biol Chem 2019; 294:18863-18872. [PMID: 31653696 DOI: 10.1074/jbc.ra119.011237] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/19/2019] [Indexed: 01/16/2023] Open
Abstract
Loss-of-function mutations in the gene encoding human protein DJ-1 cause early onset of Parkinson's disease, suggesting that DJ-1 protects dopaminergic neurons. The molecular mechanisms underlying this neuroprotection are unclear; however, DJ-1 has been suggested to be a GSH-independent glyoxalase that detoxifies methylglyoxal (MGO) by converting it into lactate. It has also been suggested that DJ-1 serves as a deglycase that catalyzes hydrolysis of hemithioacetals and hemiaminals formed by reactions of MGO with the thiol and amino groups of proteins. In this report, we demonstrate that the equilibrium constant of reaction of MGO with thiols is ∼500 m-1 at 37 °C and that the half-life of the resulting hemithioacetal is only 12 s. These thermodynamic parameters would dictate that a significant fraction of free MGO will be present in a fast equilibrium with hemithioacetals in solution. We found that removal of free MGO by DJ-1's glyoxalase activity forces immediate spontaneous decomposition of hemithioacetals due to the shift in equilibrium position. This spontaneous decomposition of hemithioacetals could be mistaken for deglycase activity of DJ-1. Furthermore, we demonstrate that higher initial concentrations of hemithioacetals are associated with lower rates of DJ-1-mediated conversion of MGO, ruling out the possibility that hemithioacetals are DJ-1 substrates. Experiments with CRISPR/Cas-generated DJ-1-knockout HEK293 cells revealed that DJ-1 does not protect against acute MGO toxicity or carboxymethylation of lysine residues in cells. Combined, our results suggest that DJ-1 does not possess protein deglycase activity.
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Affiliation(s)
- Anna Andreeva
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Zhanibek Bekkhozhin
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Nuriza Omertassova
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Timur Baizhumanov
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Gaziza Yeltay
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Mels Akhmetali
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Daulet Toibazar
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Darkhan Utepbergenov
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan.
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4
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Qi H, Zhao M, Liang H, Wu J, Huang Z, Hu A, Wang J, Lu Y, Zhang J. Rapid detection of trace Cu 2+ using an l-cysteine based interdigitated electrode sensor integrated with AC electrokinetic enrichment. Electrophoresis 2019; 40:2699-2705. [PMID: 31172539 DOI: 10.1002/elps.201900169] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/02/2019] [Accepted: 06/03/2019] [Indexed: 11/08/2022]
Abstract
Copper is an indispensable trace element for human health. Too much or too little intake of copper ion (Cu2+ ) can lead to its own adverse health conditions. Therefore, detection of Cu2+ is always of vital importance. In this work, a simple sensor was developed for rapid detection of trace Cu2+ in water, in which L-cysteine (Cys) as a molecular probe was self-assembled on a gold interdigital electrode to form a monolayer for specific capture of Cu2+ . The interfacial capacitance of interdigital electrode was detected to indicate the target adsorption level under an AC signal working as the excitation to induce directed movement and enrichment of Cu2+ to the electrode surface. This sensor reached a limit of detection of 4.14 fM and a satisfactory selectivity against eight other ions (Zn2+ , Hg2+ , Pb2+ , Cd2+ , Mg2+ , Fe2+ , As3+ , and As5+ ). Testing of spiked tap water was also performed, demonstrating the sensor's usability. This sensor as well as the detection method shows a great application potential in fields such as environmental monitoring and medical diagnosis.
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Affiliation(s)
- Haochen Qi
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, P. R. China
| | - Meiqi Zhao
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, P. R. China
| | - Huaguo Liang
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, P. R. China
| | - Jayne Wu
- Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN, USA
| | - Zhengfeng Huang
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, P. R. China
| | - Anming Hu
- Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA
| | - Jian Wang
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, P. R. China
| | - Yingchun Lu
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, P. R. China
| | - Jian Zhang
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, P. R. China.,Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN, USA
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5
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Neelofar K, Arif Z, Ahmad J, Alam K. Inhibitory effect of silibinin on Amadori-albumin in diabetes mellitus: A multi-spectroscopic and biochemical approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 209:217-222. [PMID: 30399482 DOI: 10.1016/j.saa.2018.10.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/17/2018] [Accepted: 10/25/2018] [Indexed: 06/08/2023]
Abstract
Due to increased understanding of the damaging effects of glycation process, it is highly desirable to manage this process effectively either by prevention or by managing the consequences of glycation preferentially at early stage. The use of potential naturally occurring compounds as anti-glycating agents may provide an effective approach to control the development and progression of diabetic associated complications. In the present study, human serum albumin (albumin) was co-incubated with glucose and different concentrations of silibinin. Silibinin was demonstrated to possess anti-glycation activity. We found that silibinin inhibits glucoseinduced glycation at an early stage. We analyzed the effect of silibinin on albumin structure and its biochemical properties at early stage of glycation through various biophysical and biochemical techniques. Nitro blue tertazolium assay results showed that fructosamine formation was reduced in the presence of silibinin. UV-visible spectra results showed decrease in the absorbance with increasing concentrations of silibinin towards native albumin absorbance. Fluorescence results showed that the intensity was increased with increasing the silibinin concentrations as compared to Amadori-albumin. In addition, Far-UV CD spectra demonstrated some restoration of α-helicity when albumin was incubated with glucose in the presence of silibinin. Moreover, silibinin caused significant reduction in carbonyl contents with concomitant increase in free thiol, lysine and arginine residues. The anti-glycation activity of silibinin was concentration-dependent. From all the observations, we can conclude that silibinin might be acting as an obstacle in the binding of glucose with albumin and thus preventing the glycation induced changes in albumin. Silibinin may be effective in delaying glycation mediated pathologies in diabetic individuals.
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Affiliation(s)
- Km Neelofar
- Department of Biochemistry, J.N. Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, India
| | - Zarina Arif
- Department of Biochemistry, J.N. Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, India
| | - Jamal Ahmad
- Department of Biochemistry, J.N. Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, India
| | - Khursheed Alam
- Department of Biochemistry, J.N. Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, India.
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6
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Emel’yanov VV. Glycation, antiglycation, and deglycation: Their role in aging mechanisms and geroprotective effects (literature review). ADVANCES IN GERONTOLOGY 2017. [DOI: 10.1134/s2079057017010064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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7
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Salus K, Hoffmann M, Siodła T, Wyrzykiewicz B, Pluskota-Karwatka D. Synthesis, structural studies and stability of model cysteine containing DNA–protein cross-links. NEW J CHEM 2017. [DOI: 10.1039/c7nj00270j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the presence of Nα-acetyllysine, cross-links of aldehydic adenine nucleoside adducts with N-acetylcysteine lose an N-acetylcysteine moiety undergoing transformation into amino derivatives.
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Affiliation(s)
- Kinga Salus
- Adam Mickiewicz University in Poznań
- Faculty of Chemistry
- Umultowska 89b
- 61-614 Poznań
- Poland
| | - Marcin Hoffmann
- Adam Mickiewicz University in Poznań
- Faculty of Chemistry
- Umultowska 89b
- 61-614 Poznań
- Poland
| | - Tomasz Siodła
- Adam Mickiewicz University in Poznań
- Faculty of Chemistry
- Umultowska 89b
- 61-614 Poznań
- Poland
| | - Bożena Wyrzykiewicz
- Adam Mickiewicz University in Poznań
- Faculty of Chemistry
- Umultowska 89b
- 61-614 Poznań
- Poland
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8
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Borowczyk K, Wyszczelska-Rokiel M, Kubalczyk P, Głowacki R. Simultaneous determination of albumin and low-molecular-mass thiols in plasma by HPLC with UV detection. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 981-982:57-64. [PMID: 25612564 DOI: 10.1016/j.jchromb.2014.12.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 12/23/2014] [Accepted: 12/29/2014] [Indexed: 10/24/2022]
Abstract
In this paper, we describe a simple and robust HPLC based method for determination of total low- and high-molecular-mass thiols, protein S-linked thiols and reduced albumin in plasma. The method is based on derivatization of analytes with 2-chloro-1-methylquinolinium tetrafluoroborate, separation and quantification by reversed-phase liquid chromatography followed by UV detection. Disulfides were converted to their thiol counterparts by reductive cleavage with tris(2-carboxyethyl)phosphine. Linearity in detector response for total thiols was observed over the range of 1-40 μmol L(-1) for Hcy and glutathione (GSH), 5-100 μmol L(-1) for Cys-Gly, 20-300 μmol L(-1) for Cys and 3.1-37.5 μmol L(-1) (0.2-2.4gL(-1)) for human serum albumin (HSA). For the protein S-bound forms these values were as follows: 0.5-30 μmol L(-1) for Hcy and GSH, 2.5-60 μmol L(-1) for Cys-Gly and 5-200 μmol L(-1) for Cys. The LOQs for total HSA, Cys, Hcy, Cys-Gly and GSH were 0.5, 0.2, 0.4, 0.3 and 0.4 μmol L(-1), respectively. The estimated validation parameters for all analytes are more than sufficient to allow the analytical method to be used for monitoring of the total and protein bound thiols as well as redox status of HSA in plasma.
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Affiliation(s)
- Kamila Borowczyk
- University of Łódź, Faculty of Chemistry, Department of Environmental Chemistry, 163 Pomorska Str., 90-236 Łódź, Poland
| | - Monika Wyszczelska-Rokiel
- University of Łódź, Faculty of Chemistry, Department of Environmental Chemistry, 163 Pomorska Str., 90-236 Łódź, Poland
| | - Paweł Kubalczyk
- University of Łódź, Faculty of Chemistry, Department of Environmental Chemistry, 163 Pomorska Str., 90-236 Łódź, Poland
| | - Rafał Głowacki
- University of Łódź, Faculty of Chemistry, Department of Environmental Chemistry, 163 Pomorska Str., 90-236 Łódź, Poland.
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9
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Neelofar N, Ahmad J, Alam K. Impact of in vitro non-enzymatic glycation on biophysical and biochemical regimes of human serum albumin: relevance in diabetes associated complications. RSC Adv 2015. [DOI: 10.1039/c5ra07232h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Early glycation involves attachment of glucose on ε-NH2 of lysine residues.
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Affiliation(s)
- Neelofar Neelofar
- Rajiv Gandhi Center for Diabetes and Endocrinology
- Faculty of Medicine
- Aligarh Muslim University
- Aligarh 202002
- India
| | - Jamal Ahmad
- Rajiv Gandhi Center for Diabetes and Endocrinology
- Faculty of Medicine
- Aligarh Muslim University
- Aligarh 202002
- India
| | - Khursheed Alam
- Department of Biochemistry
- Faculty of Medicine
- Aligarh Muslim University
- Aligarh 202002
- India
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10
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Penezić AZ, Jovanović VB, Pavićević ID, Aćimović JM, Mandić LM. HSA carbonylation with methylglyoxal and the binding/release of copper(ii) ions. Metallomics 2015; 7:1431-8. [DOI: 10.1039/c5mt00159e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
HSA carbonylation in vitro (with MG) and in vivo (diabetes) leads to copper(ii) binding affinity decrease and copper(ii) release from copper–HSA complexes depending mainly on the redox state of the Cys34-SH group.
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Affiliation(s)
- Ana Z. Penezić
- Department of Biochemistry
- Faculty of Chemistry
- University of Belgrade
- Belgrade 11158, Serbia
| | - Vesna B. Jovanović
- Department of Biochemistry
- Faculty of Chemistry
- University of Belgrade
- Belgrade 11158, Serbia
| | - Ivan D. Pavićević
- Department of Biochemistry
- Faculty of Chemistry
- University of Belgrade
- Belgrade 11158, Serbia
| | - Jelena M. Aćimović
- Department of Biochemistry
- Faculty of Chemistry
- University of Belgrade
- Belgrade 11158, Serbia
| | - Ljuba M. Mandić
- Department of Biochemistry
- Faculty of Chemistry
- University of Belgrade
- Belgrade 11158, Serbia
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11
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Pavićević ID, Jovanović VB, Takić MM, Penezić AZ, Aćimović JM, Mandić LM. Fatty acids binding to human serum albumin: Changes of reactivity and glycation level of Cysteine-34 free thiol group with methylglyoxal. Chem Biol Interact 2014; 224:42-50. [DOI: 10.1016/j.cbi.2014.10.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Revised: 09/21/2014] [Accepted: 10/06/2014] [Indexed: 12/24/2022]
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12
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Vidal N, Cavaille J, Graziani F, Robin M, Ouari O, Pietri S, Stocker P. High throughput assay for evaluation of reactive carbonyl scavenging capacity. Redox Biol 2014; 2:590-8. [PMID: 24688895 PMCID: PMC3969608 DOI: 10.1016/j.redox.2014.01.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 01/16/2014] [Accepted: 01/20/2014] [Indexed: 11/19/2022] Open
Abstract
Many carbonyl species from either lipid peroxidation or glycoxidation are extremely reactive and can disrupt the function of proteins and enzymes. 4-hydroxynonenal and methylglyoxal are the most abundant and toxic lipid-derived reactive carbonyl species. The presence of these toxics leads to carbonyl stress and cause a significant amount of macromolecular damages in several diseases. Much evidence indicates trapping of reactive carbonyl intermediates may be a useful strategy for inhibiting or decreasing carbonyl stress-associated pathologies. There is no rapid and convenient analytical method available for the assessment of direct carbonyl scavenging capacity, and a very limited number of carbonyl scavengers have been identified to date, their therapeutic potential being highlighted only recently. In this context, we have developed a new and rapid sensitive fluorimetric method for the assessment of reactive carbonyl scavengers without involvement glycoxidation systems. Efficacy of various thiol- and non-thiol-carbonyl scavenger pharmacophores was tested both using this screening assay adapted to 96-well microplates and in cultured cells. The scavenging effects on the formation of Advanced Glycation End-product of Bovine Serum Albumin formed with methylglyoxal, 4-hydroxynonenal and glucose-glycated as molecular models were also examined. Low molecular mass thiols with an α-amino-β-mercaptoethane structure showed the highest degree of inhibitory activity toward both α,β-unsaturated aldehydes and dicarbonyls. Cysteine and cysteamine have the best scavenging ability toward methylglyoxal. WR-1065 which is currently approved for clinical use as a protective agent against radiation and renal toxicity was identified as the best inhibitor of 4-hydroxynonenal. We describe a rapid method for assessment of reactive carbonyl scavengers. We evaluated the carbonyl scavenger activity of various pharmacophores. α-amino-β-mercaptoethane structure showed the highest degree of activity.
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Affiliation(s)
- N. Vidal
- Aix Marseille Université, CNRS, ICR UMR 7273, 13397, Marseille, France
| | - J.P. Cavaille
- Aix Marseille Université, CNRS, ICR UMR 7273, 13397, Marseille, France
| | - F. Graziani
- Aix Marseille Université, CNRS, ISM2 UMR 7313, 13397, Marseille, France
| | - M. Robin
- Aix Marseille Université, CNRS, ICR UMR 7273, 13397, Marseille, France
| | - O. Ouari
- Aix Marseille Université, CNRS, ICR UMR 7273, 13397, Marseille, France
| | - S. Pietri
- Aix Marseille Université, CNRS, ICR UMR 7273, 13397, Marseille, France
| | - P. Stocker
- Aix Marseille Université, CNRS, ICR UMR 7273, 13397, Marseille, France
- Corresponding author. Tel.: +33 4 91 28 87 92; fax: +33 4 91 28 87 58.
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13
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Aćimović JM, Penezić AZ, Pavićević ID, Jovanović VB, Mandić LM. The efficiency of compounds with α-amino-β-mercapto-ethane group in protection of human serum albumin carbonylation and cross-linking with methylglyoxal. ACTA ACUST UNITED AC 2014; 10:2166-75. [DOI: 10.1039/c4mb00217b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Substances containing an α-amino-β-mercapto-ethane pharmacophore may be used as effective methylglyoxal scavengers and inhibitors of protein carbonylation and cross-linking.
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Affiliation(s)
- Jelena M. Aćimović
- Department of Biochemistry
- Faculty of Chemistry
- University of Belgrade
- Belgrade, Serbia
| | - Ana Z. Penezić
- Department of Biochemistry
- Faculty of Chemistry
- University of Belgrade
- Belgrade, Serbia
| | - Ivan D. Pavićević
- Department of Biochemistry
- Faculty of Chemistry
- University of Belgrade
- Belgrade, Serbia
| | - Vesna B. Jovanović
- Department of Biochemistry
- Faculty of Chemistry
- University of Belgrade
- Belgrade, Serbia
| | - Ljuba M. Mandić
- Department of Biochemistry
- Faculty of Chemistry
- University of Belgrade
- Belgrade, Serbia
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14
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Improving the reliability of human serum albumin-thiol group determination. Anal Biochem 2013; 439:17-22. [DOI: 10.1016/j.ab.2013.03.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 03/11/2013] [Accepted: 03/27/2013] [Indexed: 11/19/2022]
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15
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Dell'edera D, Tinelli A, Milazzo GN, Malvasi A, Domenico C, Pacella E, Pierluigi C, Giuseppe T, Marcello G, Francesco L, Epifania AA. Effect of multivitamins on plasma homocysteine in patients with the 5,10 methylenetetrahydrofolate reductase C677T homozygous state. Mol Med Rep 2013; 8:609-12. [PMID: 23818036 DOI: 10.3892/mmr.2013.1563] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Accepted: 06/20/2013] [Indexed: 12/13/2022] Open
Abstract
The role of hyperhomocysteinemia (HHcy) as a cardiovascular risk factor remains a matter of debate, while it correlates with folates, it demonstrates inverse correlation with plasma homocysteine (Hcy) levels and vitamin B12 levels and reduces plasma Hcy levels following supplementation with multivitamins. The purpose of this study was to demonstrate that administering multivitamins at specific doses for 90 days restores normal plasma Hcy levels in women who are homozygous for the thermolabile variant of 5,10 methylenetetrahydrofolate reductase (MTHFR C677T). We enrolled 106 healthy females aged between 30 and 42 years, who were non-smokers, non-vegetarian, normotensive and who had no history of food abuse in the previous months. Only females were enrolled in order to rule out any bias due to the variation in Hcy plasma concentrations between males and females. Patient blood sampling was performed in order to determine plasma Hcy, serum folic acid and vitamin B12 levels. Furthermore, molecular characterization of the C677T polymorphism present in the MTHFR gene, was also performed. The results of this study demonstrated that supplementation with specific multivitamins restores normal plasma Hcy levels, regardless of the MTHFR genotype. Furthermore, it is unnecessary to adminster high doses of folate to reduce plasma Hcy levels, and administering high doses of folate may cause pro-inflammatory and pro-proliferative effects.
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Affiliation(s)
- Domenico Dell'edera
- Unit of Cytogenetic and Molecular Genetics, Madonna delle Grazie Hospital, Matera, Italy.
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Shumaev KB, Gubkina SA, Vanin AF, Burbaev DS, Mokh VP, Topunov AF, Ruuge EK. Formation of a new type of dinitrosyl iron complexes bound to cysteine modified with methylglyoxal. Biophysics (Nagoya-shi) 2013. [DOI: 10.1134/s000635091302019x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Pathological significance of mitochondrial glycation. Int J Cell Biol 2012; 2012:843505. [PMID: 22778743 PMCID: PMC3388455 DOI: 10.1155/2012/843505] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Accepted: 05/01/2012] [Indexed: 01/08/2023] Open
Abstract
Glycation, the nonenzymatic glycosylation of biomolecules, is commonly observed in diabetes and ageing. Reactive dicarbonyl species such as methylglyoxal and glyoxal are thought to be major physiological precursors of glycation. Because these dicarbonyls tend to be formed intracellularly, the levels of advanced glycation end products on cellular proteins are higher than on extracellular ones. The formation of glycation adducts within cells can have severe functional consequences such as inhibition of protein activity and promotion of DNA mutations. Although several lines of evidence suggest that there are specific mitochondrial targets of glycation, and mitochondrial dysfunction itself has been implicated in disease and ageing, it is unclear if glycation of biomolecules specifically within mitochondria induces dysfunction and contributes to disease pathology. We discuss here the possibility that mitochondrial glycation contributes to disease, focussing on diabetes, ageing, cancer, and neurodegeneration, and highlight the current limitations in our understanding of the pathological significance of mitochondrial glycation.
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