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Lin X, Moreno IY, Nguyen L, Gesteira TF, Coulson-Thomas VJ. ROS-Mediated Fragmentation Alters the Effects of Hyaluronan on Corneal Epithelial Wound Healing. Biomolecules 2023; 13:1385. [PMID: 37759785 PMCID: PMC10526416 DOI: 10.3390/biom13091385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/11/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
A buildup of reactive oxygen species (ROS) occurs in virtually all pathological conditions. Hyaluronan (HA) is a major extracellular matrix component and is susceptible to oxidation by reactive oxygen species (ROS), yet the precise chemical structures of oxidized HA products (oxHA) and their physiological properties remain largely unknown. This study characterized the molecular weight (MW), structures, and physiological properties of oxHA. For this, high-molecular-weight HA (HMWHA) was oxidized using increasing molar ratios of hydrogen peroxide (H2O2) or hypochlorous acid (HOCl). ROS lead to the fragmentation of HA, with the oxHA products produced by HOCl exhibiting an altered chemical structure while those produced by H2O2 do not. HMWHA promotes the viability of human corneal epithelial cells (hTCEpi), while low MWHA (LMWHA), ultra-LMWHA (ULMWHA), and most forms of oxHA do not. HMWHA and LMWHA promote hTCEpi proliferation, while ULMWHA and all forms of oxHA do not. LMWHA and some forms of oxHA promote hTCEpi migration, while HMWHA does not. Finally, all native forms of HA and oxHA produced by HOCl promote in vivo corneal wound healing, while oxHA produced by H2O2 does not. Taken together, our results show that HA fragmentation by ROS can alter the physiological activity of HA by altering its MW and structure.
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Affiliation(s)
| | | | | | | | - Vivien J. Coulson-Thomas
- College of Optometry, University of Houston, 4401 Martin Luther King Boulevard, Houston, TX 77204-2020, USA; (X.L.); (I.Y.M.); (L.N.); (T.F.G.)
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2
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Toropitsyn E, Pravda M, Rebenda D, Ščigalková I, Vrbka M, Velebný V. A composite device for viscosupplementation treatment resistant to degradation by reactive oxygen species and hyaluronidase. J Biomed Mater Res B Appl Biomater 2022; 110:2595-2611. [PMID: 35727166 DOI: 10.1002/jbm.b.35114] [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: 07/29/2021] [Revised: 05/02/2022] [Accepted: 06/08/2022] [Indexed: 12/15/2022]
Abstract
Osteoarthritis (OA) is one of the most common musculoskeletal disorders in the world. OA is often associated with the loss of viscoelastic and tribological properties of synovial fluid (SF) due to degradation of hyaluronic acid (HA) by reactive oxygen species (ROS) and hyaluronidases. Viscosupplementation is one of the ways how to effectively restore SF functions. However, current viscosupplementation products provide only temporal therapeutic effect because of short biological half-life. In this article we describe a novel device for viscosupplementation (NV) based on the cross-linked tyramine derivative of HA, chondroitin sulfate (CS), and high molecular weight HA by online determination of viscoelastic properties loss during degradation by ROS and hyaluronidase. Rheological and tribological properties of developed viscosupplement were compared with HA solutions with different molecular weights in the range 500-2000 kDa, which are currently commonly used as medical devices for viscosupplementation treatment. Moreover, based on clinical practice and scientific literature all samples were also diluted by model OA SF in the ratio 1:1 (vol/vol) to better predict final properties after injection to the joint. The observed results confirmed that NV exhibits appropriate rheological properties (viscosity, elastic, and viscous moduli) comparable with healthy SF and maintain them during degradation for a significantly longer time than HA solutions with molecular weight in the range 500-2000 kDa and cross-linked material without CS.
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Affiliation(s)
- Evgeniy Toropitsyn
- Contipro a.s., Dolní Dobrouč, Czech Republic.,Biocev, First Faculty of Medicine Charles University, Vestec, Czech Republic
| | | | - David Rebenda
- Faculty of Mechanical Engineering, Brno University of Technology, Brno, Czech Republic
| | | | - Martin Vrbka
- Faculty of Mechanical Engineering, Brno University of Technology, Brno, Czech Republic
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3
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Sun Z, Lyu F, Wu S, Lu Z, Cheng H. Ultrafast construction of partially hydrogen-bonded metal-hyaluronan networks with multiple biotissue-related features. Carbohydr Polym 2022; 295:119852. [DOI: 10.1016/j.carbpol.2022.119852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/29/2022] [Accepted: 07/06/2022] [Indexed: 11/17/2022]
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4
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Peroxidative depolymerization of fucosylated glycosaminoglycan: Bond-cleavage pattern and activities of oligosaccharides. Carbohydr Polym 2022; 295:119855. [DOI: 10.1016/j.carbpol.2022.119855] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/04/2022] [Accepted: 07/06/2022] [Indexed: 11/23/2022]
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5
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Kuznetcova I, Bacher F, Alfadul SM, Tham MJR, Ang WH, Babak MV, Rapta P, Arion VB. Elucidation of Structure-Activity Relationships in Indolobenzazepine-Derived Ligands and Their Copper(II) Complexes: the Role of Key Structural Components and Insight into the Mechanism of Action. Inorg Chem 2022; 61:10167-10181. [PMID: 35713376 PMCID: PMC9490829 DOI: 10.1021/acs.inorgchem.2c01375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Indolo[3,2-d][1]benzazepines (paullones), indolo[3,2-d][2]benzazepines, and indolo[2,3-d][2]benzazepines (latonduines) are isomeric scaffolds of current medicinal interest. Herein, we prepared a small library of novel indolo[3,2-d][2]benzazepine-derived ligands HL1-HL4 and copper(II) complexes 1-4. All compounds were characterized by spectroscopic methods (1H and 13C NMR, UV-vis, IR) and electrospray ionization (ESI) mass spectrometry, while complexes 2 and 3, in addition, by X-ray crystallography. Their purity was confirmed by HPLC coupled with high-resolution ESI mass spectrometry and/or elemental analysis. The stability of compounds in aqueous solutions in the presence of DMSO was confirmed by 1H NMR and UV-vis spectroscopy measurements. The compounds revealed high antiproliferative activity in vitro in the breast cancer cell line MDA-MB-231 and hepatocellular carcinoma cell line LM3 in the low micromolar to nanomolar concentration range. Important structure-activity relationships were deduced from the comparison of anticancer activities of HL1-HL4 and 1-4 with those of structurally similar paullone-derived (HL5-HL7 and 5-7) and latonduine-derived scaffolds (HL8-HL11 and 8-11). The high anticancer activity of the lead drug candidate 4 was linked to reactive oxygen species and endoplasmic reticulum stress induction, which were confirmed by fluorescent microscopy and Western blot analysis.
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Affiliation(s)
- Irina Kuznetcova
- Institute of Inorganic Chemistry of the University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Felix Bacher
- Institute of Inorganic Chemistry of the University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Samah Mutasim Alfadul
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Max Jing Rui Tham
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Singapore 117544, Singapore
| | - Wee Han Ang
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Singapore 117544, Singapore
| | - Maria V Babak
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Peter Rapta
- Institute of Physical Chemistry and Chemical Physics, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-81237 Bratislava, Slovak Republic
| | - Vladimir B Arion
- Institute of Inorganic Chemistry of the University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
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6
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Slezak J, Kura B, LeBaron TW, Singal PK, Buday J, Barancik M. Oxidative Stress and Pathways of Molecular Hydrogen Effects in Medicine. Curr Pharm Des 2021; 27:610-625. [PMID: 32954996 DOI: 10.2174/1381612826666200821114016] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/02/2020] [Indexed: 11/22/2022]
Abstract
There are many situations of excessive production of reactive oxygen species (ROS) such as radiation, ischemia/reperfusion (I/R), and inflammation. ROS contribute to and arises from numerous cellular pathologies, diseases, and aging. ROS can cause direct deleterious effects by damaging proteins, lipids, and nucleic acids as well as exert detrimental effects on several cell signaling pathways. However, ROS are important in many cellular functions. The injurious effect of excessive ROS can hypothetically be mitigated by exogenous antioxidants, but clinically this intervention is often not favorable. In contrast, molecular hydrogen provides a variety of advantages for mitigating oxidative stress due to its unique physical and chemical properties. H2 may be superior to conventional antioxidants, since it can selectively reduce ●OH radicals while preserving important ROS that are otherwise used for normal cellular signaling. Additionally, H2 exerts many biological effects, including antioxidation, anti-inflammation, anti-apoptosis, and anti-shock. H2 accomplishes these effects by indirectly regulating signal transduction and gene expression, each of which involves multiple signaling pathways and crosstalk. The Keap1-Nrf2-ARE signaling pathway, which can be activated by H2, plays a critical role in regulating cellular redox balance, metabolism, and inducing adaptive responses against cellular stress. H2 also influences the crosstalk among the regulatory mechanisms of autophagy and apoptosis, which involve MAPKs, p53, Nrf2, NF-κB, p38 MAPK, mTOR, etc. The pleiotropic effects of molecular hydrogen on various proteins, molecules and signaling pathways can at least partly explain its almost universal pluripotent therapeutic potential.
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Affiliation(s)
- Jan Slezak
- Centre of Experimental Medicine, Institute for Heart Research, Slovak Academy of Sciences, 841 04 Bratislava, Slovakia
| | - Branislav Kura
- Centre of Experimental Medicine, Institute for Heart Research, Slovak Academy of Sciences, 841 04 Bratislava, Slovakia
| | - Tyler W LeBaron
- Centre of Experimental Medicine, Institute for Heart Research, Slovak Academy of Sciences, 841 04 Bratislava, Slovakia
| | - Pawan K Singal
- Institute of Cardiovascular Sciences, St. Boniface Hospital Research Centre, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
| | - Jozef Buday
- Department of Psychiatry, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, 121 08 Prague 2, Czech Republic
| | - Miroslav Barancik
- Centre of Experimental Medicine, Institute for Heart Research, Slovak Academy of Sciences, 841 04 Bratislava, Slovakia
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7
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Antioxidant vs. Prooxidant Properties of the Flavonoid, Kaempferol, in the Presence of Cu(II) Ions: A ROS-Scavenging Activity, Fenton Reaction and DNA Damage Study. Int J Mol Sci 2021; 22:ijms22041619. [PMID: 33562744 PMCID: PMC7915082 DOI: 10.3390/ijms22041619] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/29/2021] [Accepted: 02/03/2021] [Indexed: 01/04/2023] Open
Abstract
Kaempferol is a flavonoid that occurs in tea and in many vegetables and fruits, including broccoli, cabbage, beans, grapes, apples, and strawberries. The efficacy of Kaempferol has been demonstrated in the treatment of breast, esophageal, cervical, ovarian, and liver cancers and leukemia, which very likely arises from its prooxidant properties and the activation of pro-apoptotic pathways. Indeed, this matter has already been the focus of a number of published studies and reviews. The aim of the present study was to elucidate the antioxidant vs. prooxidant properties of flavonoids in the presence of the redox-active metal, copper (II) ion, by means of the Fenton reaction. The specific motivation of this work is that, since an increased level of Cu(II) ions is known to be associated with many disease states such as neurological conditions (Alzheimer’s disease) and cancer, any interaction between these ions and flavonoids might affect the outcome of therapeutic uses of the latter. The structure of the Cu-kaempferol complex in DMSO was investigated by means of low temperature EPR spectroscopy, which confirmed the existence of at least two distinct coordination environments around the copper (II) ion. UV vis-spectra of kaempferol and its Cu(II) complex in DMSO revealed an interaction between the 5-OH (A ring) group and the 4-CO (C ring) group of kaempferol with Cu(II) ions. An ABTS assay confirmed that kaempferol acted as an effective radical scavenger, and that this effect was further enhanced in the form of the Cu(II)-kaempferol complex. Quantitative EPR spin trapping experiments, using DMPO as the spin trap, confirmed suppression of the formation of a mixture of hydroxyl, superoxide, and methyl radicals, in a Fenton reaction system, upon coordination of kaempferol to the redox-active Cu(II) ions, by 80% with respect to the free Cu(II) ions. A viscometric study revealed a better DNA-intercalating ability of the Cu-kaempferol complex than for free kaempferol, essential for conferring anticancer activity of these substances. The results of the viscometric measurements were compared with those from a DNA damage study of Cu-kaempferol complexes in a Fenton reaction system, using gel electrophoresis. At low concentrations of kaempferol (Cu–kaempferol ratios of 1:1 and 1:2), a very weak protective effect on DNA was noted, whereas when kaempferol was present in excess, a significant DNA-protective effect was found. This can be explained if the weakly intercalated kaempferol molecules present at the surface of DNA provide protection against attack by ROS that originate from the Fenton reaction involving intercalated Cu(II)-kaempferol complexes. Following the application of ROS scavengers, L-histidine, DMSO, and SOD, gel electrophoresis confirmed the formation of singlet oxygen, hydroxyl radicals, and superoxide radical anions, respectively. We propose that the prooxidant properties of Cu-kaempferol complexes may provide anticancer activity of these substances. When present in excess, kaempferol displays antioxidant properties under Cu-Fenton conditions. This suggests that kaempferol might prove a suitable candidate for the prevention or treatment of oxidative stress related medical conditions that involve a disturbed metabolism of redox metals such as copper, for example, Menkes disease, and neurological disorders, including Alzheimer’s disease. For the potential use of kaempferol in clinical practice, it will be necessary to optimize the dose size and critical age of the patient so that this flavonoid may be beneficial as a preventive drug against cancer and neurological disorders.
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8
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Jozefíková F, Perontsis S, Šimunková M, Barbieriková Z, Švorc L, Valko M, Psomas G, Moncol’ J. Novel copper(ii) complexes with fenamates and isonicotinamide: structure and properties, and interactions with DNA and serum albumin. NEW J CHEM 2020. [DOI: 10.1039/d0nj02007a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Reactions of non-steroidal anti-inflammatory drugs tolfenamic, meclofenamic, mefenamic, clonixic and niflumic acids with isonicotinamide and copper(ii) acetate resulted in the formation of five novel mixed-ligand Cu(ii) coordination compounds.
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Affiliation(s)
- Flóra Jozefíková
- Department of Inorganic Chemistry
- Faculty of Chemical and Food Technology
- Slovak University of Technology
- Bratislava
- Slovakia
| | - Spyros Perontsis
- Department of General and Inorganic Chemistry
- Faculty of Chemistry
- Aristotle University of Thessaloniki
- GR-54124 Thessaloniki
- Greece
| | - Miriama Šimunková
- Department of Physical Chemistry
- Faculty of Chemical and Food Technology
- Slovak University of Technology
- Bratislava
- Slovakia
| | - Zuzana Barbieriková
- Department of Physical Chemistry
- Faculty of Chemical and Food Technology
- Slovak University of Technology
- Bratislava
- Slovakia
| | - L’ubomír Švorc
- Department of Analytical Chemistry
- Faculty of Chemical and Food Technology
- Slovak University of Technology
- Bratislava
- Slovakia
| | - Marian Valko
- Department of Physical Chemistry
- Faculty of Chemical and Food Technology
- Slovak University of Technology
- Bratislava
- Slovakia
| | - George Psomas
- Department of General and Inorganic Chemistry
- Faculty of Chemistry
- Aristotle University of Thessaloniki
- GR-54124 Thessaloniki
- Greece
| | - Ján Moncol’
- Department of Inorganic Chemistry
- Faculty of Chemical and Food Technology
- Slovak University of Technology
- Bratislava
- Slovakia
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9
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Kura B, Bagchi AK, Singal PK, Barancik M, LeBaron TW, Valachova K, Šoltés L, Slezák J. Molecular hydrogen: potential in mitigating oxidative-stress-induced radiation injury. Can J Physiol Pharmacol 2019; 97:287-292. [DOI: 10.1139/cjpp-2018-0604] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Uncontrolled production of oxygen and nitrogen radicals results in oxidative and nitrosative stresses that impair cellular functions and have been regarded as causative common denominators of many pathological processes. In this review, we report on the beneficial effects of molecular hydrogen in scavenging radicals in an artificial system of•OH formation. As a proof of principle, we also demonstrate that in rat hearts in vivo, administration of molecular hydrogen led to a significant increase in superoxide dismutase as well as pAKT, a cell survival signaling molecule. Irradiation of the rats caused a significant increase in lipid peroxidation, which was mitigated by pre-treatment of the animals with molecular hydrogen. The nuclear factor erythroid 2-related factor 2 is regarded as an important regulator of oxyradical homeostasis, as well as it supports the functional integrity of cells, particularly under conditions of oxidative stress. We suggest that the beneficial effects of molecular hydrogen may be through the activation of nuclear factor erythroid 2-related factor 2 pathway that promotes innate antioxidants and reduction of apoptosis, as well as inflammation.
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Affiliation(s)
- Branislav Kura
- Centre of Experimental Medicine, Institute for Heart Research, Slovak Academy of Sciences, 841 04 Bratislava, Slovak Republic
| | - Ashim K. Bagchi
- Institute of Cardiovascular Sciences, St. Boniface Hospital Research Centre, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
| | - Pawan K. Singal
- Institute of Cardiovascular Sciences, St. Boniface Hospital Research Centre, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
| | - Miroslav Barancik
- Centre of Experimental Medicine, Institute for Heart Research, Slovak Academy of Sciences, 841 04 Bratislava, Slovak Republic
| | - Tyler W. LeBaron
- Centre of Experimental Medicine, Institute for Heart Research, Slovak Academy of Sciences, 841 04 Bratislava, Slovak Republic
- Molecular Hydrogen Institute, Enoch, Utah 84721, USA
| | - Katarina Valachova
- Centre of Experimental Medicine, Institute of Experimental Pharmacology and Toxicology, 841 04 Bratislava, Slovak Republic
| | - Ladislav Šoltés
- Centre of Experimental Medicine, Institute of Experimental Pharmacology and Toxicology, 841 04 Bratislava, Slovak Republic
| | - Ján Slezák
- Centre of Experimental Medicine, Institute for Heart Research, Slovak Academy of Sciences, 841 04 Bratislava, Slovak Republic
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Efficient Degradation of High-Molecular-Weight Hyaluronic Acid by a Combination of Ultrasound, Hydrogen Peroxide, and Copper Ion. Molecules 2019; 24:molecules24030617. [PMID: 30754615 PMCID: PMC6384647 DOI: 10.3390/molecules24030617] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 02/01/2019] [Accepted: 02/06/2019] [Indexed: 11/17/2022] Open
Abstract
Hyaluronic acid (HA) was depolymerized by a combination of ultrasound, hydrogen peroxide and copper ion. The structures of high-molecular-weight hyaluronic acid (HMW-HA) and low-molecular-weight hyaluronic acid (LMW-HA) were determined by Fourier transform infrared (FTIR) spectroscopy, circular dichroism (CD) spectroscopy, and UV-VIS absorption spectroscopy. The degradations of HMW-HA using a physical method, a chemical method, and a combination of physical and chemical method were compared. The results show that HA can be effectively degraded by a combinatorial method involving ultrasound, hydrogen peroxide, and copper ion. Under the degradation conditions of 50 mM H2O2, 5.0 μM CuCl2, 160 W, pH 4.0, and reaction at 50 °C for 30 min, the content of glucuronic acid was 36.56%, and the yield of LMW-HA was 81.71%. The FTIR, CD, and UV-VIS absorption spectra of HA did not change with the decrease in molecular weight, indicating that the structure of HA remained intact during the degradation.
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11
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Khakina EA, Kraevaya OA, Popova ML, Peregudov AS, Troyanov SI, Chernyak AV, Martynenko VM, Kulikov AV, Schols D, Troshin PA. Synthesis of different types of alkoxy fullerene derivatives from chlorofullerene C 60Cl 6. Org Biomol Chem 2018; 15:773-777. [PMID: 27830866 DOI: 10.1039/c6ob02251k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report novel synthetic routes for facile preparation of highly functionalized fullerene derivatives C60(OR)5X (X = H, Cl, Br), C60(OR)4O and C60(OR)2 from chlorofullerene C60Cl6. The first water-soluble fullerene compound bearing residues of 3-oxypropanoic acid demonstrated a potent anti-HIV activity.
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Affiliation(s)
| | - Ol'ga A Kraevaya
- IPCP RAS, Semenov Prospect 1, Chernogolovka, 142432, Russia. and HCC RAS, Miusskaya pl. 9, Moscow, 125047, Russia
| | - Maria L Popova
- IPCP RAS, Semenov Prospect 1, Chernogolovka, 142432, Russia. and HCC RAS, Miusskaya pl. 9, Moscow, 125047, Russia
| | | | - Sergey I Troyanov
- Department of Chemistry, Moscow State University, Leninskie gory, Moscow, 119991, Russia
| | | | | | | | - Dominique Schols
- Rega Institute for Medical Research, KU Leuven, Minderbroedersstraat 10, B-3000, Leuven, Belgium
| | - Pavel A Troshin
- IPCP RAS, Semenov Prospect 1, Chernogolovka, 142432, Russia. and Skolkovo Institute of Science and Technology, Nobel St. 3, Moscow, 143026, Russian Federation
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12
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Fe3O4-TiO2: Gd nanoparticles with enhanced photocatalytic activity and magnetic recyclability. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2017.11.049] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Abstract
The glycosaminoglycan hyaluronan (HA) is a key component of the microenvironment surrounding cells. In healthy tissues, HA molecules have extremely high molecular mass and consequently large hydrodynamic volumes. Tethered to the cell surface by clustered receptor proteins, HA molecules crowd each other, as well as other macromolecular species. This leads to severe nonideality in physical properties of the biomatrix, because steric exclusion leads to an increase in effective concentration of the macromolecules. The excluded volume depends on both polymer concentration and hydrodynamic volume/molecular mass. The biomechanical properties of the extracellular matrix, tissue hydration, receptor clustering, and receptor-ligand interactions are strongly affected by the presence of HA and by its molecular mass. In inflammation, reactive oxygen and nitrogen species fragment the HA chains. Depending on the rate of chain degradation relative to the rates of new synthesis and removal of damaged chains, short fragments of the HA molecules can be present at significant levels. Not only are the physical properties of the extracellular matrix affected, but the HA fragments decluster their primary receptors and act as endogenous danger signals. Bioanalytical methods to isolate and quantify HA fragments have been developed to determine profiles of HA content and size in healthy and diseased biological fluids and tissues. These methods have potential use in medical diagnostic tests. Therapeutic agents that modulate signaling by HA fragments show promise in wound healing and tissue repair without fibrosis.
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Affiliation(s)
- Mary K Cowman
- Tandon School of Engineering, New York University, New York, NY, United States
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14
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Jomova K, Lawson M, Drostinova L, Lauro P, Poprac P, Brezova V, Michalik M, Lukes V, Valko M. Protective role of quercetin against copper(II)-induced oxidative stress: A spectroscopic, theoretical and DNA damage study. Food Chem Toxicol 2017; 110:340-350. [PMID: 29107026 DOI: 10.1016/j.fct.2017.10.042] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 10/24/2017] [Accepted: 10/25/2017] [Indexed: 01/27/2023]
Abstract
The radical scavenging and metal chelating properties of flavonoids indicate that they may play a protective role in diseases with perturbed metal homeostasis such as Alzheimer's disease. In this work we investigated the effect of the coordination of quercetin to copper(II) in view of the formation of ROS in Cu-catalyzed Fenton reaction. ABTS and DPPH assays confirmed that the copper(II)-quercetin complex exhibits a stronger radical scavenging activity than does quercetin alone. EPR spin trapping experiments have shown that chelation of quercetin to copper significantly suppressed the formation of hydroxyl radicals in the Cu(II)-Fenton reaction. DNA damage experiments revealed a protective effect for quercetin, but only at higher stoichiometric ratios of quercetin relative to copper. DNA protective effect of quercetin against ROS attack was described by two mechanisms. The first mechanism lies in suppressed formation of ROS due to the decreased catalytic action of copper in the Fenton reaction, as a consequence of its chelation and direct scavenging of ROS by free quercetin. Since the Cu-quercetin complex intercalates into DNA, the second mechanism was attributed to a suppressed intercalating ability of the Cu-quercetin complex due to the mildly intercalating free quercetin into DNA, thus creating a protective wall against stronger intercalators.
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Affiliation(s)
- Klaudia Jomova
- Department of Chemistry, Faculty of Natural Sciences, Constantine the Philosopher University, 949 74 Nitra, Slovakia
| | - Michael Lawson
- Department of Chemistry, Faculty of Natural Sciences, Constantine the Philosopher University, 949 74 Nitra, Slovakia
| | - Lenka Drostinova
- Department of Chemistry, Faculty of Natural Sciences, Constantine the Philosopher University, 949 74 Nitra, Slovakia
| | - Peter Lauro
- Department of Chemistry, Faculty of Natural Sciences, Constantine the Philosopher University, 949 74 Nitra, Slovakia
| | - Patrik Poprac
- Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovakia
| | - Vlasta Brezova
- Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovakia
| | - Martin Michalik
- Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovakia
| | - Vladimir Lukes
- Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovakia
| | - Marian Valko
- Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovakia.
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15
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Ebid R. Hyaluronan and its function as an unspecific regulator of cell-bound receptors. Med Hypotheses 2015; 85:249-52. [PMID: 26021678 DOI: 10.1016/j.mehy.2015.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 02/03/2015] [Accepted: 05/04/2015] [Indexed: 11/15/2022]
Abstract
In a former study on primary mesangial cells a regulatory function of hyaluronan (HA) was shown. HA is the backbone of a cell-bound jelly-barrier. The thickness of that cell-bound jelly-barrier regulates the access of ligands to their cellular receptors in an unspecific way. The thickness of that barrier is reduced by degradation of HA. The hypothesis was that this regulatory mechanism is not restricted to mesangial cells, but applies for other cell types as well. A selective and topic oriented review of the literature was performed to collect references, which support the impression, that this unspecific mechanism of receptor-regulation by HA is not restricted to primary mesangial cells. On the basis of the data from the review of the literature it was concluded that the regulatory mechanism of HA also applies for other than mesangial cells. On the basis of the said mechanism it was concluded that a tissue-specific regulation of HA on the cell surface might be relevant in therapy, especially in chronic diseases.
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Degradation of hyaluronic acid derived from tilapia eyeballs by a combinatorial method of microwave, hydrogen peroxide, and ascorbic acid. Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2014.12.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Simulescu V, Mondek J, Kalina M, Pekař M. Kinetics of long-term degradation of different molar mass hyaluronan solutions studied by SEC-MALLS. Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2014.12.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Bobeničová M, Valko M, Brezová V, Dvoranová D. UVA generated free radicals in irinotecan (CPT-11) in the presence of copper ions. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2014.06.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Holubova L, Korecka L, Podzimek S, Moravcova V, Rotkova J, Ehlova T, Velebny V, Bilkova Z. Enhanced multiparametric hyaluronan degradation for production of molar-mass-defined fragments. Carbohydr Polym 2014; 112:271-6. [PMID: 25129744 DOI: 10.1016/j.carbpol.2014.05.096] [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: 03/12/2014] [Revised: 05/07/2014] [Accepted: 05/19/2014] [Indexed: 11/25/2022]
Abstract
Hyaluronic acid (HA) is known to serve as a dynamic mediator intervening in many physiological functions. Its specific effect has been repeatedly confirmed to be strongly influenced by the molecular size of hyaluronan fragments. However common technological approaches of HA fragments production have their limitations. In many cases, the final products do not meet the strict pharmaceutical requirements, specifically due to size polydispersity and reaction contaminants. We present novel methodology based on combination of unique incidental ability of the plant-derived protease papain to split the glycosidic bonds and an indispensable advantages of biocompatible macroporous material with incorporated ferrous ions serving as carrier for covalent papain fixation. This atypical and yet unpublished highly efficient multiparametric approach allows enhanced HA fragmentation for easily and safely producing molar-mass-defined HA fragments with narrow size distribution. Native polyacrylamide gel electrophoresis (PAGE) and size exclusion chromatography/multi-angle light scattering (SEC-MALS) confirmed the effectiveness of our multiparametric approach.
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Affiliation(s)
- Lucie Holubova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 3210 Pardubice, Czech Republic; Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 3210 Pardubice, Czech Republic
| | - Lucie Korecka
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 3210 Pardubice, Czech Republic.
| | - Stepan Podzimek
- Synthetic Polymers, Fibres and Textiles Chemistry Unit, Institute of Chemistry and Technology of Macromolecular Materials, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 3210 Pardubice, Czech Republic
| | - Veronika Moravcova
- Contipro Pharma a.s., Dolni Dobrouc 401, 561 02 Dolni Dobrouc, Czech Republic
| | - Jana Rotkova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 3210 Pardubice, Czech Republic
| | - Tereza Ehlova
- Contipro Pharma a.s., Dolni Dobrouc 401, 561 02 Dolni Dobrouc, Czech Republic
| | - Vladimir Velebny
- Contipro Pharma a.s., Dolni Dobrouc 401, 561 02 Dolni Dobrouc, Czech Republic
| | - Zuzana Bilkova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 3210 Pardubice, Czech Republic
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Tamer TM. Hyaluronan and synovial joint: function, distribution and healing. Interdiscip Toxicol 2013; 6:111-25. [PMID: 24678248 PMCID: PMC3967437 DOI: 10.2478/intox-2013-0019] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 08/25/2013] [Accepted: 09/10/2013] [Indexed: 11/20/2022] Open
Abstract
Synovial fluid is a viscous solution found in the cavities of synovial joints. The principal role of synovial fluid is to reduce friction between the articular cartilages of synovial joints during movement. The presence of high molar mass hyaluronan (HA) in this fluid gives it the required viscosity for its function as lubricant solution. Inflammation oxidation stress enhances normal degradation of hyaluronan causing several diseases related to joints. This review describes hyaluronan properties and distribution, applications and its function in synovial joints, with short review for using thiol compounds as antioxidants preventing HA degradations under inflammation conditions.
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Affiliation(s)
- Tamer Mahmoud Tamer
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, Egypt
- Laboratory of Bioorganic Chemistry of Drugs, Institute of Experimental Pharmacology & Toxicology, Slovak Academy of Sciences, Bratislava, Slovak Republic
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21
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D’Este M, Alini M, Eglin D. Single step synthesis and characterization of thermoresponsive hyaluronan hydrogels. Carbohydr Polym 2012; 90:1378-85. [DOI: 10.1016/j.carbpol.2012.07.007] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 06/21/2012] [Accepted: 07/02/2012] [Indexed: 01/31/2023]
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22
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Hrabárová E, Valachová K, Juránek I, Soltés L. Free-radical degradation of high-molar-mass hyaluronan induced by ascorbate plus cupric ions: evaluation of antioxidative effect of cysteine-derived compounds. Chem Biodivers 2012; 9:309-17. [PMID: 22344907 DOI: 10.1002/cbdv.201100046] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Based on our previous findings, the present study has focused on free-radical-mediated degradation of the synovial biopolymer hyaluronan. The degradation was induced in vitro by the Weissberger's system comprising ascorbate plus cupric ions in the presence of oxygen, representing a model of the early phase of acute synovial joint inflammation. The study presents a novel strategy for hyaluronan protection against oxidative degradation with the use of cysteine-derived compounds. In particular, the work objectives were to evaluate potential protective effects of reduced form of L-glutathione, L-cysteine, N-acetyl-L-cysteine, and cysteamine, against free-oxygen-radical-mediated degradation of high-molar-mass hyaluronan in vitro. The hyaluronan degradation was influenced by variable activity of the tested thiol compounds, also in dependence of their concentration applied. It was found that L-glutathione exhibited the most significant protective and chain-breaking antioxidative effect against the hyaluronan degradation. Thiol antioxidative activity, in general, can be influenced by many factors such as various molecule geometry, type of functional groups, radical attack accessibility, redox potential, thiol concentration and pK(a), pH, ionic strength of solution, as well as different ability to interact with transition metals. Antioxidative activity was found to decrease in the following order: L-glutathione, cysteamine, N-acetyl-L-cysteine, and L-cysteine. These findings might be beneficial in future development of potential drugs in the treatment of synovial hyaluronan depletion-derived diseases.
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Affiliation(s)
- Eva Hrabárová
- Department of Carbohydrate Enzymology, Institute of Chemistry, Slovak Academy of Sciences, SK-84538 Bratislava.
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23
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Cozikova D, Laznickova A, Hermannova M, Svanovsky E, Palek L, Buffa R, Sedova P, Koppova R, Petrik M, Smejkalova D, Laznicek M, Velebny V. Preparation and the kinetic stability of hyaluronan radiolabeled with 111In, 125I and 14C. J Pharm Biomed Anal 2010; 52:517-24. [PMID: 20189740 DOI: 10.1016/j.jpba.2010.02.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Revised: 02/05/2010] [Accepted: 02/05/2010] [Indexed: 10/19/2022]
Abstract
Three different procedures for the labeling of hyaluronan (HA) with (111)In, (125)I and (14)C radionuclides were compared, and the kinetic stability of radiolabeled HA under different conditions (saline, artificial gastric juice and plasma) was established. Modification of HA structure with bifunctional chelating agents (DTPA) or with the prosthetic group (tyramine or tyrosine) was essential prior (111)In and (125)I labeling. These chemical labeling techniques were fast, simple and inexpensive, and labeled agents with a high specific activity were obtained. The only disadvantage of these methods was the occurrence of unknown functional groups in the HA molecule requiring further characterization of the compound. Conversely, HA labeling with (14)C by biotechnological synthesis was found to be rather expensive and time-consuming process. Although, the final product (14)C-HA was identical to natural HA its low specific activity presents certain limitation for its application in biological experiments. Stability studies showed that (14)C-HA and (125)I-Tm-HA were stable in all studied mediums. In the case of (125)I-Trs-HA, stability slightly decreased in rat plasma and in artificial gastric juice with increasing time. The least stable was (111)In-DTPA-HA, which degraded completely after 48h in artificial gastric juice. Kinetic stability studies may provide primary information concerning the properties of radiolabeled HA in vitro, which is essential for the use and explanation of its behavior in biological experiments.
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Affiliation(s)
- D Cozikova
- Contipro C a.s., Dolni Dobrouc 401, 561 02 Dolni Dobrouc, Czech Republic.
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24
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Šoltés L, Kogan G. Catabolism of hyaluronan: involvement of transition metals. Interdiscip Toxicol 2009; 2:229-38. [PMID: 21217859 PMCID: PMC2984116 DOI: 10.2478/v10102-009-0026-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2009] [Revised: 07/20/2009] [Accepted: 07/21/2009] [Indexed: 11/20/2022] Open
Abstract
One of the very complex structures in the vertebrates is the joint. The main component of the joint is the synovial fluid with its high-molar-mass glycosaminoglycan hyaluronan, which turnover is approximately twelve hours. Since the synovial fluid does not contain any hyaluronidases, the fast hyaluronan catabolism is caused primarily by reductive-oxidative processes.Eight transition metals - V(23), Mn(25), Fe(26), Co(27), Ni(28), Cu(29), Zn(30), and Mo(42) - naturally occurring in living organism are essential for the control of various metabolic and signaling pathways. They are also the key elements in catabolism of hyaluronan in the joint.In this overview, the role of these metals in physiological and pathophysiological catabolism of hyaluronan is described. The participation of these metals in the initiation and propagation of the radical degradation hyaluronan is critically reviewed.
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Affiliation(s)
- Ladislav Šoltés
- Institute of Experimental Pharmacology, Slovak Academy of Sciences, SK-84104 Bratislava, Slovakia
| | - Grigorij Kogan
- Directorate Health, Directorate General Research, European Commission, B-1049, Brussels, Belgium
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25
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Hrabárová E, Valachová K, Rychlý J, Rapta P, Sasinková V, Malíková M, Šoltés L. High-molar-mass hyaluronan degradation by Weissberger's system: Pro- and anti-oxidative effects of some thiol compounds. Polym Degrad Stab 2009. [DOI: 10.1016/j.polymdegradstab.2009.05.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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26
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Rees MD, Kennett EC, Whitelock JM, Davies MJ. Oxidative damage to extracellular matrix and its role in human pathologies. Free Radic Biol Med 2008; 44:1973-2001. [PMID: 18423414 DOI: 10.1016/j.freeradbiomed.2008.03.016] [Citation(s) in RCA: 145] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Revised: 03/16/2008] [Accepted: 03/20/2008] [Indexed: 02/08/2023]
Abstract
The extracellular compartments of most biological tissues are significantly less well protected against oxidative damage than intracellular sites and there is considerable evidence for such compartments being subject to a greater oxidative stress and an altered redox balance. However, with some notable exceptions (e.g., plasma and lung lining fluid) oxidative damage within these compartments has been relatively neglected and is poorly understood. In particular information on the nature and consequences of damage to extracellular matrix is lacking despite the growing realization that changes in matrix structure can play a key role in the regulation of cellular adhesion, proliferation, migration, and cell signaling. Furthermore, the extracellular matrix is widely recognized as being a key site of cytokine and growth factor binding, and modification of matrix structure might be expected to alter such behavior. In this paper we review the potential sources of oxidative matrix damage, the changes that occur in matrix structure, and how this may affect cellular behavior. The role of such damage in the development and progression of inflammatory diseases is discussed.
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Affiliation(s)
- Martin D Rees
- The Heart Research Institute, 114 Pyrmont Bridge Rd, Camperdown, NSW 2050, Australia
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27
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Hyaluronic Acid: Its Function and Degradation in in vivo Systems. BIOACTIVE NATURAL PRODUCTS (PART N) 2008. [DOI: 10.1016/s1572-5995(08)80035-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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28
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Soltés L, Stankovská M, Kogan G, Mendichi R, Volpi N, Sasinková V, Gemeiner P. Degradation of high-molar-mass hyaluronan by an oxidative system comprising ascorbate, Cu(II), and hydrogen peroxide: Inhibitory action of antiinflammatory drugs—Naproxen and acetylsalicylic acid. J Pharm Biomed Anal 2007; 44:1056-63. [PMID: 17553647 DOI: 10.1016/j.jpba.2007.04.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2007] [Revised: 04/25/2007] [Accepted: 04/26/2007] [Indexed: 10/23/2022]
Abstract
Changes in dynamic viscosity of the solutions of a high-molar-mass hyaluronan (HA) were monitored using a rotational viscometer. The degradative conditions generated in the HA solutions by a system comprising ascorbate plus Cu(II) plus H(2)O(2) were studied either in the presence or absence of a drug--naproxen or acetylsalicylic acid. Continual decrease of the dynamic viscosity of HA solution was indicative of the polymer degradation. Addition of the drug retarded/inhibited the HA degradation in a concentration-dependent manner. The characteristics of the fragmented polymers were investigated by FT-IR spectroscopy and by two different liquid chromatographic techniques, namely by size-exclusion chromatography equipped with a multi-angle light scattering photometric detector and by high-performance liquid chromatography connected on-line to a spectrofluorometer.
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Affiliation(s)
- L Soltés
- Institute of Experimental Pharmacology, Slovak Academy of Sciences, SK-84104 Bratislava, Slovakia
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29
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Sreeprasad TS, Samal AK, Pradeep T. Body- or tip-controlled reactivity of gold nanorods and their conversion to particles through other anisotropic structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:9463-71. [PMID: 17665936 DOI: 10.1021/la700851x] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
We report the shape transformation of gold nanorods to spherical nanoparticles, assisted by cupric ions. The reaction proceeds through a series of structures and could be arrested at any stage to produce particles of desired shape. In the presence of a larger concentration of cetyltrimethylammonium bromide (CTAB), selective etching of the tips of the nanorods occurs to a greater extent. The subsequent transformation is driven by the surface reconstruction of nanorods to generate more stable surfaces. As the stability of various surfaces depends on the protecting agent used, the reactivity is modified by controlling its presence at the surface. We show that the body of the rods is more susceptible for reaction at reduced CTAB concentrations. During the conversion to particles, several anisotropic transient structures were observed and were imaged using high-resolution transmission electron microscopy (HRTEM). The transformation occurs due to the hydroxyl radicals produced by Cu2+ in the presence of ascorbic acid (AA). A mechanism has been proposed and several control experiments were conducted to test it. The cupric ion induced shape transformations can be extended to other ions, and knowing the mechanism allows the control of the process to stabilize various anisotropic structures.
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Affiliation(s)
- T S Sreeprasad
- DST Unit on Nanoscience (DST-UNS), Department of Chemistry and Sophisticated Analytical Instrument Facility, Indian Institute of Technology, Madras, Chennai, India
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Stern R, Kogan G, Jedrzejas MJ, Soltés L. The many ways to cleave hyaluronan. Biotechnol Adv 2007; 25:537-57. [PMID: 17716848 DOI: 10.1016/j.biotechadv.2007.07.001] [Citation(s) in RCA: 284] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2007] [Revised: 07/06/2007] [Accepted: 07/11/2007] [Indexed: 01/30/2023]
Abstract
Hyaluronan is being used increasingly as a component of artificial matrices and in bioengineering for tissue scaffolding. The length of hyaluronan polymer chains is now recognized as informational, involving a wide variety of size-specific functions. Inadvertent scission of hyaluronan can occur during the process of preparation. On the other hand, certain size-specific hyaluronan fragments may be desirable, endowing the finished bioengineered product with specific properties. In this review, the vast arrays of reactions that cause scission of hyaluronan polymers is presented, including those on an enzymatic, free radical, and chemical basis.
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Affiliation(s)
- Robert Stern
- Department of Pathology, School of Medicine, UCSF Comprehensive Cancer Center, University of California San Francisco, San Francisco, California 94143-0511, USA
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31
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Soltés L, Valachová K, Mendichi R, Kogan G, Arnhold J, Gemeiner P. Solution properties of high-molar-mass hyaluronans: the biopolymer degradation by ascorbate. Carbohydr Res 2007; 342:1071-7. [PMID: 17362893 DOI: 10.1016/j.carres.2007.02.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Revised: 01/31/2007] [Accepted: 02/16/2007] [Indexed: 11/24/2022]
Abstract
An accurate molecular characterization, molar mass and size distributions, of 10 hyaluronan (HA) samples was performed by using a multi-angle light scattering detector connected on-line to a size exclusion chromatographic system. The dynamic viscosity eta of the HA solutions was investigated using a rotational viscometer. On monitoring the sample dynamic viscosity for up to 5h, a small however constant increase of the eta value was observed, indicating rheopectic behavior of all 10 HA solutions. Addition of ascorbic acid to the HA solutions caused significant changes in the rheological properties of the samples investigated. The change of eta values in the course of time was explained by the redox reactions (caused by the added ascorbate) that occur during the dynamic viscosity monitoring.
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Affiliation(s)
- Ladislav Soltés
- Institute of Experimental Pharmacology, Slovak Academy of Sciences, SK-84104 Bratislava, Slovakia.
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32
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In vitro screening of the action of non-steroidal anti-inflammatory drugs on hypochlorous acid-induced hyaluronan degradation. Polym Degrad Stab 2007. [DOI: 10.1016/j.polymdegradstab.2007.01.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Rychlý J, Šoltés L, Stankovská M, Janigová I, Csomorová K, Sasinková V, Kogan G, Gemeiner P. Unexplored capabilities of chemiluminescence and thermoanalytical methods in characterization of intact and degraded hyaluronans. Polym Degrad Stab 2006. [DOI: 10.1016/j.polymdegradstab.2006.07.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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34
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Soltés L, Stankovská M, Brezová V, Schiller J, Arnhold J, Kogan G, Gemeiner P. Hyaluronan degradation by copper(II) chloride and ascorbate: rotational viscometric, EPR spin-trapping, and MALDI–TOF mass spectrometric investigations. Carbohydr Res 2006; 341:2826-34. [PMID: 17049501 DOI: 10.1016/j.carres.2006.09.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2006] [Revised: 09/19/2006] [Accepted: 09/25/2006] [Indexed: 11/20/2022]
Abstract
The degradation of high-molar-mass hyaluronan (HA) by copper(II) chloride and ascorbate was studied by means of rotational viscometry. It was found that even small amounts of CuCl(2) present in the oxidative system led to the pronounced degradation of HA, reflected in a rapid decrease of the dynamic viscosity of the biopolymer solution. Such degradation was induced by free radicals generated in elevated amounts in the presence of copper ions. Electron paramagnetic resonance investigations performed on a model oxidative system containing Cu(II) and ascorbic acid proved the formation of relatively stable ascorbate anion radicals resulting from the reaction of ascorbic acid with hydroxyl radicals. In this way, by scavenging the hydroxyl radicals, ascorbic acid protected HA from their degradative action. Matrix-assisted laser desorption ionization-time-of-flight (MALDI-TOF) mass spectrometry was applied to analyze the degraded HA. The results showed that only regular fragmentation of hyaluronan occurred using the mentioned oxidative system that led to the formation of HA oligomers with unaffected primary chemical structure.
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Affiliation(s)
- Ladislav Soltés
- Institute of Experimental Pharmacology, Slovak Academy of Sciences, SK-84104 Bratislava, Slovakia.
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Mendoza G, Alvarez AI, Pulido MM, Molina AJ, Merino G, Real R, Fernandes P, Prieto JG. Inhibitory effects of different antioxidants on hyaluronan depolymerization. Carbohydr Res 2006; 342:96-102. [PMID: 17123492 DOI: 10.1016/j.carres.2006.10.027] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2006] [Revised: 10/25/2006] [Accepted: 10/27/2006] [Indexed: 11/18/2022]
Abstract
Hyaluronan (HA) was depolymerized by hydroxyl radicals generated from hydrogen peroxide and cupric ions. Inhibition of HA degradation by four well-known antioxidants was investigated, as HA can scavenge reactive oxygen species (ROS). Change in hyaluronan molecular weight was observed by size-exclusion chromatography. Inhibition of HA degradation was estimated from the retention times observed. It was found that HA degradation was inhibited in a clearly concentration-dependent manner by mannitol, thiourea and vinpocetine. Propofol also inhibited the depolymerization, but its concentration-dependent effect was not so clear. The antioxidant concentrations at which HA degradation was decreased by 50% were 42 microM for thiourea; 1.35 microM for vinpocetine; and 0.39 microM for propofol. A concentration of 26.51 mM of mannitol was needed to attain the same inhibitory effect. Although many factors are involved in a therapeutic response, the results obtained in this study support the idea that HA may be protected from ROS attack by the concomitant use of well-known antioxidants.
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Affiliation(s)
- Gracia Mendoza
- Department of Physiology, University of Leon, E-24071 Leon, Spain
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