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Díaz-González JCM, Escalona-Villalpando RA, Arriaga LG, Minteer SD, Casanova-Moreno JR. Effects of the cross-linker on the performance and stability of enzymatic electrocatalytic films of glucose oxidase and dimethylferrocene-modified linear poly(ethyleneimine). Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135782] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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2
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Ménard M, Meyer F, Parkhomenko K, Leuvrey C, Francius G, Bégin-Colin S, Mertz D. Mesoporous silica templated-albumin nanoparticles with high doxorubicin payload for drug delivery assessed with a 3-D tumor cell model. Biochim Biophys Acta Gen Subj 2018; 1863:332-341. [PMID: 30391506 DOI: 10.1016/j.bbagen.2018.10.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/29/2018] [Accepted: 10/31/2018] [Indexed: 11/16/2022]
Abstract
Human serum albumin (HSA) nanoparticles emerge as promising carriers for drug delivery. Among challenges, one important issue is the design of HSA nanoparticles with a low mean size of ca. 50 nm and having a high drug payload. The original strategy developed here is to use sacrificial mesoporous nanosilica templates having a diameter close to 30 nm to drive the protein nanocapsule formation. This new approach ensures first an efficient high drug loading (ca. 30%) of Doxorubicin (DOX) in the porous silica by functionalizing silica with an aminosiloxane layer and then allows the one-step adsorption and the physical cross-linking of HSA by modifying the silica surface with isobutyramide (IBAM) groups. After silica template removal, homogenous DOX-loaded HSA nanocapsules (30-60 nm size) with high drug loading capacity (ca. 88%) are thus formed. Such nanocapsules are shown efficient in multicellular tumor spheroid models (MCTS) of human hepatocarcinoma cells by their significant growth inhibition with respect to controls. Such a new synthesis approach paves the way toward new protein based nanocarriers for drug delivery.
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Affiliation(s)
- Mathilde Ménard
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS, Université de Strasbourg, 23, rue du Loess, BP 43, 67034 Strasbourg, France; Université de Strasbourg, INSERM, UMR_S 1121 Biomatériaux et bioingénierie, FMTS, 11 rue Humann, 67085 Strasbourg, Cedex, France
| | - Florent Meyer
- Université de Strasbourg, INSERM, UMR_S 1121 Biomatériaux et bioingénierie, FMTS, 11 rue Humann, 67085 Strasbourg, Cedex, France.
| | - Ksenia Parkhomenko
- Institut de Chimie et Procédés pour l'Energie l'Environnement et la Santé, 25 rue Becquerel, 67087 Strasbourg, France
| | - Cédric Leuvrey
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS, Université de Strasbourg, 23, rue du Loess, BP 43, 67034 Strasbourg, France
| | - Grégory Francius
- CNRS - Université de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement, LCPME, UMR 7564, Villers-lès-Nancy F-54600, France
| | - Sylvie Bégin-Colin
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS, Université de Strasbourg, 23, rue du Loess, BP 43, 67034 Strasbourg, France.
| | - Damien Mertz
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS, Université de Strasbourg, 23, rue du Loess, BP 43, 67034 Strasbourg, France.
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3
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Burnett CL. Glutaral. Int J Toxicol 2017; 36:28S-30S. [PMID: 29025344 DOI: 10.1177/1091581817716646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Christina L Burnett
- 1 Senior Scientific Writer/Analyst, Cosmetic Ingredient Review, Washington, DC, USA
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4
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Phadke KV, Manjeshwar LS, Aminabhavi TM, Sathisha MP. Cellulose acetate butyrate bilayer coated microspheres for controlled release of ciprofloxacin. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-2092-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Morsy R, Hosny M, Reicha F, Elnimr T. Developing and physicochemical evaluation of cross-linked electrospun gelatin–glycerol nanofibrous membranes for medical applications. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.01.064] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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6
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Lam PL, Wong WY, Bian Z, Chui CH, Gambari R. Recent advances in green nanoparticulate systems for drug delivery: efficient delivery and safety concern. Nanomedicine (Lond) 2017; 12:357-385. [DOI: 10.2217/nnm-2016-0305] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Nanotechnology manipulates therapeutic agents at the nanoscale for the development of nanomedicines. However, there are current concerns over nanomedicines, mainly related to the possible toxicity of nanomaterials used for health medications. Due to their small size, they can enter the human body more readily than larger sized particles. Green chemistry encompasses the green synthesis of drug-loaded nanoparticles by reducing the use of hazardous materials in the synthesis process, thus reducing the adverse health impacts of pharmaceutics. This would greatly expand their potential in biomedical treatments. This review highlights the potential risks of nanomedicine formulations to health, delivery routes of green nanomedicines, recent advances in the development of green nanoscale systems for biomedical applications and future perspectives for the green development of nanomedicines.
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Affiliation(s)
- Pik-Ling Lam
- State Key Laboratory of Chirosciences, Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, PR China
| | - Wai-Yeung Wong
- State Key Laboratory of Chirosciences, Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, PR China
| | - Zhaoxiang Bian
- Clinical Division, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, PR China
| | - Chung-Hin Chui
- State Key Laboratory of Chirosciences, Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, PR China
- Clinical Division, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, PR China
| | - Roberto Gambari
- Centre of Biotechnology, Department of Life Sciences & Biotechnology, University of Ferrara, Ferrara, Italy
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Anvari M, Chung D. Dynamic rheological and structural characterization of fish gelatin – Gum arabic coacervate gels cross-linked by tannic acid. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.04.028] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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8
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The effects of crosslinkers on physical, mechanical, and cytotoxic properties of gelatin sponge prepared via in-situ gas foaming method as a tissue engineering scaffold. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 63:1-9. [PMID: 27040189 DOI: 10.1016/j.msec.2016.02.034] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 01/23/2016] [Accepted: 02/10/2016] [Indexed: 01/20/2023]
Abstract
In this study porous gelatin scaffolds were prepared using in-situ gas foaming, and four crosslinking agents were used to determine a biocompatible and effective crosslinker that is suitable for such a method. Crosslinkers used in this study included: hexamethylene diisocyanate (HMDI), poly(ethylene glycol) diglycidyl ether (epoxy), glutaraldehyde (GTA), and genipin. The prepared porous structures were analyzed using Fourier Transform Infrared Spectroscopy (FT-IR), thermal and mechanical analysis as well as water absorption analysis. The microstructures of the prepared samples were analyzed using Scanning Electron Microscopy (SEM). The effects of the crosslinking agents were studied on the cytotoxicity of the porous structure indirectly using MTT analysis. The affinity of L929 mouse fibroblast cells for attachment on the scaffold surfaces was investigated by direct cell seeding and DAPI-staining technique. It was shown that while all of the studied crosslinking agents were capable of stabilizing prepared gelatin scaffolds, there are noticeable differences among physical and mechanical properties of samples based on the crosslinker type. Epoxy-crosslinked scaffolds showed a higher capacity for water absorption and more uniform microstructures than the rest of crosslinked samples, whereas genipin and GTA-crosslinked scaffolds demonstrated higher mechanical strength. Cytotoxicity analysis showed the superior biocompatibility of the naturally occurring genipin in comparison with other synthetic crosslinking agents, in particular relative to GTA-crosslinked samples.
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Wang W, Zhang Y, Ye R, Ni Y. Physical crosslinkings of edible collagen casing. Int J Biol Macromol 2015; 81:920-5. [DOI: 10.1016/j.ijbiomac.2015.09.032] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 09/16/2015] [Accepted: 09/18/2015] [Indexed: 11/25/2022]
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10
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Gelatin porous scaffolds fabricated using a modified gas foaming technique: Characterisation and cytotoxicity assessment. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 48:63-70. [DOI: 10.1016/j.msec.2014.10.074] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 08/15/2014] [Accepted: 10/27/2014] [Indexed: 01/15/2023]
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Kahrilas GA, Blotevogel J, Stewart PS, Borch T. Biocides in hydraulic fracturing fluids: a critical review of their usage, mobility, degradation, and toxicity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:16-32. [PMID: 25427278 DOI: 10.1021/es503724k] [Citation(s) in RCA: 175] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Biocides are critical components of hydraulic fracturing ("fracking") fluids used for unconventional shale gas development. Bacteria may cause bioclogging and inhibit gas extraction, produce toxic hydrogen sulfide, and induce corrosion leading to downhole equipment failure. The use of biocides such as glutaraldehyde and quaternary ammonium compounds has spurred a public concern and debate among regulators regarding the impact of inadvertent releases into the environment on ecosystem and human health. This work provides a critical review of the potential fate and toxicity of biocides used in hydraulic fracturing operations. We identified the following physicochemical and toxicological aspects as well as knowledge gaps that should be considered when selecting biocides: (1) uncharged species will dominate in the aqueous phase and be subject to degradation and transport whereas charged species will sorb to soils and be less bioavailable; (2) many biocides are short-lived or degradable through abiotic and biotic processes, but some may transform into more toxic or persistent compounds; (3) understanding of biocides' fate under downhole conditions (high pressure, temperature, and salt and organic matter concentrations) is limited; (4) several biocidal alternatives exist, but high cost, high energy demands, and/or formation of disinfection byproducts limits their use. This review may serve as a guide for environmental risk assessment and identification of microbial control strategies to help develop a sustainable path for managing hydraulic fracturing fluids.
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Affiliation(s)
- Genevieve A Kahrilas
- Department of Chemistry, Colorado State University , 1872 Campus Delivery, Fort Collins, Colorado 80523, United States
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12
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Chakravarthy S, Sadagopan S, Nair A, Sukumaran SK. Zebrafish as anIn VivoHigh-Throughput Model for Genotoxicity. Zebrafish 2014; 11:154-66. [DOI: 10.1089/zeb.2013.0924] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
| | - Sathish Sadagopan
- Discovery Biology, Anthem Biosciences Private Limited, Bangalore, India
| | - Ayyappan Nair
- Discovery Biology, Anthem Biosciences Private Limited, Bangalore, India
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13
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Boyer IJ, Heldreth B, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD, Liebler DC, Marks JG, Shank RC, Slaga TJ, Snyder PW, Andersen FA. Amended Safety Assessment of Formaldehyde and Methylene Glycol as Used in Cosmetics. Int J Toxicol 2013; 32:5S-32S. [DOI: 10.1177/1091581813511831] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Formaldehyde and methylene glycol may be used safely in cosmetics if established limits are not exceeded and are safe for use in nail hardeners in the present practices of use and concentration, which include instructions to avoid skin contact. In hair-smoothing products, however, in the present practices of use and concentration, formaldehyde and methylene glycol are unsafe. Methylene glycol is continuously converted to formaldehyde, and vice versa, even at equilibrium, which can be easily shifted by heating, drying, and other conditions to increase the amount of formaldehyde. This rapid, reversible formaldehyde/methylene glycol equilibrium is distinguished from the slow, irreversible release of formaldehyde resulting from the so-called formaldehyde releaser preservatives, which are not addressed in this safety assessment (formaldehyde releasers may continue to be safely used in cosmetics at the levels established in their individual Cosmetic Ingredient Review safety assessments).
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Affiliation(s)
- Ivan J. Boyer
- Cosmetic Ingredient Review Toxicologist, Washington, DC, USA
| | - Bart Heldreth
- Cosmetic Ingredient Review Chemist, Washington, DC, USA
| | | | | | - Ronald A. Hill
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | | | | | - James G. Marks
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | - Ronald C. Shank
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | - Thomas J. Slaga
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | - Paul W. Snyder
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
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14
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Li J, Ren N, Qiu J, Jiang H, Zhao H, Wang G, Boughton RI, Wang Y, Liu H. Carbodiimide crosslinked collagen from porcine dermal matrix for high-strength tissue engineering scaffold. Int J Biol Macromol 2013; 61:69-74. [DOI: 10.1016/j.ijbiomac.2013.06.038] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Revised: 06/21/2013] [Accepted: 06/25/2013] [Indexed: 01/09/2023]
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15
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Gentry PR, Rodricks JV, Turnbull D, Bachand A, Van Landingham C, Shipp AM, Albertini RJ, Irons R. Formaldehyde exposure and leukemia: critical review and reevaluation of the results from a study that is the focus for evidence of biological plausibility. Crit Rev Toxicol 2013; 43:661-70. [PMID: 23902349 DOI: 10.3109/10408444.2013.818618] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A recent study (Zhang et al., 2010) has provided results attributed to aneuploidy in circulating stem cells that has been characterized as providing potential support for proposed mechanisms for formaldehyde to impact bone marrow. A critical review of the study, as well as a reanalysis of the underlying data, was performed and the results of this reanalysis suggested factors other than formaldehyde exposure may have contributed to the effects reported. In addition, although the authors stated in their paper that "all scorable metaphase spreads on each slide were analyzed, and a minimum of 150 cells per subject was scored," this protocol was not followed. In fact, the protocol to evaluate the presence of monosomy 7 or trisomy 8 was followed for three or less samples in exposed workers and six or less samples in non-exposed workers. In addition, the assays used (CFU-GM) do not actually measure the proposed events in primitive cells involved in the development of acute myeloid leukemia. Evaluation of these data indicates that the aneuploidy measured could not have arisen in vivo, but rather arose during in vitro culture. The results of our critical review and reanalysis of the data, in combination with recent toxicological and mechanistic studies, do not support a mechanism for a causal association between formaldehyde exposure and myeloid or lymphoid malignancies.
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Amornsudthiwat P, Mongkolnavin R, Kanokpanont S, Panpranot J, Wong CS, Damrongsakkul S. Improvement of early cell adhesion on Thai silk fibroin surface by low energy plasma. Colloids Surf B Biointerfaces 2013; 111:579-86. [PMID: 23893032 DOI: 10.1016/j.colsurfb.2013.07.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 05/16/2013] [Accepted: 07/03/2013] [Indexed: 11/25/2022]
Abstract
Low energy plasma has been introduced to treat the surface of Thai silk fibroin which should be enhanced for cell adhesion due to its native hydrophobic surface. Plasma surface treatment could introduce desirable hydrophilic functionalities on the surface without using any chemicals. In this work, nitrogen glow discharge plasma was generated by a low energy AC50Hz power supply system. The plasma operating conditions were optimized to reach the highest nitrogen active species by using optical emission spectroscopy. X-ray photoelectron spectroscopy (XPS) revealed that amine, hydroxyl, ether, and carboxyl groups were induced on Thai silk fibroin surface after plasma treatment. The results on Fourier transform infrared attenuated total reflection (FTIR-ATR) spectroscopy confirmed that the plasma treated effects were only on the outermost layer since there was no change in the bulk chemistry. The surface topography was insignificantly changed from the detection with atomic force microscopy (AFM). The plasma-treated effects were the improved surface wettability and cell adhesion. After a 90-s treatment, the water contact angle was at 20°, while the untreated surface was at 70°. The early cell adhesion of L929 mouse fibroblast was accelerated. L929 cells only took 3h to reach 100% cell adhesion on 90 s N2 plasma-treated surface, while there was less than 50% cell adhesion on the untreated Thai silk fibroin surface after 6h of culture. The cell adhesion results were in agreement with the cytoskeleton development. L929 F-actin was more evident on 90 s N2 plasma-treated surface than others. It could be concluded that a lower energy AC50Hz plasma system enhanced early L929 mouse fibroblast adhesion on Thai silk fibroin surface without any significant change in surface topography and bulk chemistry.
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Affiliation(s)
- Phakdee Amornsudthiwat
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Rattachat Mongkolnavin
- Department of Physics, Faculty of Science, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok 10330, Thailand; Plasma Technology and Nuclear Fusion Research Unit, Chulalongkorn University, 10330 Bangkok, Thailand
| | - Sorada Kanokpanont
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Joongjai Panpranot
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Chiow San Wong
- Plasma Technology Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Siriporn Damrongsakkul
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok 10330, Thailand; Plasma Technology and Nuclear Fusion Research Unit, Chulalongkorn University, 10330 Bangkok, Thailand.
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17
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Evaluation of mercury mediated in vitro cytotoxicity among cell lines established from green sea turtles. Toxicol In Vitro 2013; 27:1025-30. [DOI: 10.1016/j.tiv.2013.01.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Revised: 01/15/2013] [Accepted: 01/24/2013] [Indexed: 11/19/2022]
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18
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Mazzeo DEC, Matsumoto ST, Levy CE, de Angelis DDF, Marin-Morales MA. Application of micronucleus test and comet assay to evaluate BTEX biodegradation. CHEMOSPHERE 2013; 90:1030-6. [PMID: 22980962 DOI: 10.1016/j.chemosphere.2012.08.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 08/03/2012] [Accepted: 08/05/2012] [Indexed: 05/14/2023]
Abstract
The BTEX (benzene, toluene, ethylbenzene and xylene) mixture is an environmental pollutant that has a high potential to contaminate water resources, especially groundwater. The bioremediation process by microorganisms has often been used as a tool for removing BTEX from contaminated sites. The application of biological assays is useful in evaluating the efficiency of bioremediation processes, besides identifying the toxicity of the original contaminants. It also allows identifying the effects of possible metabolites formed during the biodegradation process on test organisms. In this study, we evaluated the genotoxic and mutagenic potential of five different BTEX concentrations in rat hepatoma tissue culture (HTC) cells, using comet and micronucleus assays, before and after biodegradation. A mutagenic effect was observed for the highest concentration tested and for its respective non-biodegraded concentration. Genotoxicity was significant for all non-biodegraded concentrations and not significant for the biodegraded ones. According to our results, we can state that BTEX is mutagenic at concentrations close to its water solubility, and genotoxic even at lower concentrations, differing from some described results reported for the mixture components, when tested individually. Our results suggest a synergistic effect for the mixture and that the biodegradation process is a safe and efficient methodology to be applied at BTEX-contaminated sites.
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Shi YQ, Chen X, Dai J, Jiang ZF, Li N, Zhang BY, Zhang ZB. Selenium pretreatment attenuates formaldehyde-induced genotoxicity in A549 cell lines. Toxicol Ind Health 2012; 30:901-9. [DOI: 10.1177/0748233712466129] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Formaldehyde is a major industrial chemical and has been extensively used in the manufacture of synthetic resins and chemicals. Numerous studies indicate that formaldehyde can induce various genotoxic effects in vitro and in vivo. A recent study indicated that formaldehyde impaired antioxidant cellular defences and enhanced lipid peroxidation. Selenium is an important antioxidant. We hypothesized that reactive oxygen species (ROS) and lipid peroxidation are involved in formaldehyde-induced genotoxicity in human lung cancer cell line, A549 cell line. To test the hypothesis, we investigated the effects of selenium on formaldehyde-induced genotoxicity in A549 cell lines. The results indicated that exposure to formaldehyde showed the induction of DNA–protein cross-links (DPCs). Formaldehyde significantly increased the malondialdehyde levels and decreased the activities of superoxide dismutase and glutathione peroxidase. In addition, the activations of necrosis factor-κB (NF-κB) and activator protein 1 (AP-1) were induced by the formaldehyde treatment. The pretreatment with selenium counteracted the formaldehyde-induced oxidative stress, ameliorated DPCs and attenuated the activation of NF-κB and AP-1 in A549 cell lines. All the results suggested that the pretreatment with selenium attenuated the formaldehyde-induced genotoxicity through its ROS scavenging and anti-DPCs effects in A549 cell lines.
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Affiliation(s)
- Yu-Qin Shi
- School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, Hubei, People’s Republic of China
| | - Xin Chen
- School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, Hubei, People’s Republic of China
| | - Juan Dai
- Wuhan Center for Disease Prevention and Control, Wuhan, Hubei, People’s Republic of China
| | - Zhong-Fa Jiang
- Hubei Center for Disease Prevention and Control, Wuhan, Hubei, People’s Republic of China
| | - Ning Li
- Hubei Center for Disease Prevention and Control, Wuhan, Hubei, People’s Republic of China
| | - Ben-Yan Zhang
- School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, Hubei, People’s Republic of China
| | - Zhi-Bing Zhang
- School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, Hubei, People’s Republic of China
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Zhang BY, Shi YQ, Chen X, Dai J, Jiang ZF, Li N, Zhang ZB. Protective effect of curcumin against formaldehyde-induced genotoxicity in A549 Cell Lines. J Appl Toxicol 2012; 33:1468-73. [PMID: 23059809 DOI: 10.1002/jat.2814] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Revised: 07/19/2012] [Accepted: 07/19/2012] [Indexed: 11/09/2022]
Abstract
Formaldehyde is ubiquitous in the environment. It is known to be a genotoxic substance. We hypothesized that reactive oxygen species (ROS) and lipid peroxidation are involved in formaldehyde-induced genotoxicity in human lung cancer cell lines A549. To test this hypothesis, we investigated the effects of antioxidant on formaldehyde-induced genotoxicity in A549 Cell Lines. Formaldehyde exposure caused induction of DNA-protein cross-links (DPCs). Curcumin is an important antioxidant. Formaldehyde significantly increased malondialdehyde (MDA) levels, and decreased superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activity. In addition, the activation of NF-κB and AP-1 were induced by formaldehyde treatment. Pretreatment with curcumin counteracted formaldehyde-induced oxidative stress, ameliorated DPCs and attenuated activation of NF-κB and AP-1 in A549 Cell Lines. These results, taken together, suggest that formaldehyde induced genotoxicity through its ROS and lipid peroxidase activity and caused DPCs effects in A549 cells.
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Affiliation(s)
- Ben-Yan Zhang
- School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, 430081, Hubei, China
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21
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Chen B, Li H, Ding Y, Suo H. Formation and microstructural characterization of whey protein isolate/beet pectin coacervations by laccase catalyzed cross-linking. Lebensm Wiss Technol 2012. [DOI: 10.1016/j.lwt.2012.01.006] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Lu K, Craft S, Nakamura J, Moeller BC, Swenberg JA. Use of LC-MS/MS and stable isotopes to differentiate hydroxymethyl and methyl DNA adducts from formaldehyde and nitrosodimethylamine. Chem Res Toxicol 2012; 25:664-75. [PMID: 22148432 DOI: 10.1021/tx200426b] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Formaldehyde is a known human and animal carcinogen that forms DNA adducts, and causes mutations. While there is widespread exposure to formaldehyde in the environment, formaldehyde is also an essential biochemical in all living cells. The presence of both endogenous and exogenous sources of formaldehyde makes it difficult to develop exposure-specific DNA biomarkers. Furthermore, chemicals such as nitrosodimethylamine form one mole of formaldehyde for every mole of methylating agent, raising questions about potential cocarcinogenesis. Formaldehyde-induced hydroxymethyl DNA adducts are not stable and need to be reduced to stable methyl adducts for detection, which adds another layer of complexity to identifying the origins of these adducts. In this study, highly sensitive mass spectrometry methods and isotope labeled compounds were used to differentiate between endogenous and exogenous hydroxymethyl and methyl DNA adducts. We demonstrate that N(2)-hydroxymethyl-dG is the primary DNA adduct formed in cells following formaldehyde exposure. In addition, we show that alkylating agents induce methyl adducts at N(2)-dG and N(6)-dA positions, which are identical to the reduced forms of hydroxymethyl adducts arising from formaldehyde. The use of highly sensitive LC-MS/MS and isotope labeled compounds for exposure solves these challenges and provides mechanistic insights on the formation and role of these DNA adducts.
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Affiliation(s)
- Kun Lu
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
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Balanced electrostatic blending approach--an alternative to chemical crosslinking of Thai silk fibroin/gelatin scaffold. Int J Biol Macromol 2011; 50:7-13. [PMID: 21983026 DOI: 10.1016/j.ijbiomac.2011.08.028] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Revised: 08/24/2011] [Accepted: 08/24/2011] [Indexed: 12/18/2022]
Abstract
In tissue engineering, chemical crosslinking is widely used for conjugating two or more biomaterials to mainly control biodegradability and strength. For example, Thai silk fibroin/gelatin scaffold will offer mechanical strength from Thai silk fibroin and cell attraction from gelatin. However, chemical crosslinking requires crosslinking agent which could potentially pose negative impact from remaining trace amount of chemicals especially in medical application. Here we present an alternative approach to chemical crosslinking-a balance electrostatic blending approach. In this approach, two opposite charge biomaterials were selected for blending, with different ratios. Both materials were bound together with electrostatic force. The maximum binding was achieved when mixture electric potential approaches zero. In this work, we compared this approach with traditionally chemical crosslinking in terms of physical appearance, binding effectiveness, mechanical strength (in dry/wet conditions), in vitro biodegradation, and cell proliferation. We found that 50/50 weight ratio of Thai silk fibroin/gelatin scaffold had almost comparable properties to chemical crosslinked scaffold. It has similar appearance, binding effectiveness, and affinity for cell proliferation. For mechanical properties, even this approach yields lower dry compressive modulus compared with chemical crosslinking. But in wet condition, the compressive modulus from both methods is similar. However, the biodegradation time of non-crosslinked scaffolds is slightly faster than that of chemical crosslinked ones. These results demonstrate that a balance electrostatic approach is an alternative approach to chemical crosslinking when there is a concern of remaining trace amount of crosslinking agent in medical application.
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Speit G, Kuhner S, Linsenmeyer R, Schutz P. Does formaldehyde induce aneuploidy? Mutagenesis 2011; 26:805-11. [DOI: 10.1093/mutage/ger050] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Different Molecular Weight Chitosan-Based Membranes for Tissue Regeneration. MATERIALS 2011; 4:380-389. [PMID: 28879996 PMCID: PMC5448491 DOI: 10.3390/ma4020380] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2011] [Revised: 01/16/2011] [Accepted: 01/21/2011] [Indexed: 11/17/2022]
Abstract
Natural polymers, such as chitosan, obtained from chitin, are been widely studied for use in the tissue regeneration field. This study established a protocol to attain membranes made from this biopolymer, consisting of high or low molecular weight chitosan. The biocompatibility of these membranes was histologically evaluated, comparing them to collagen membrane surgically implanted in rat subcutaneous tissue. Fifteen Holtzmann rats were divided in three experimental groups: High and Low Molecular Weight Chitosan membranes (HMWC and LMWC) and Collagen membranes (C-control group); each of them with three experimental periods: 7, 15 and 30 days. As a result, after the seven days evaluation, the membranes were present and associated with a variable degree of inflammation, and after the 15 and 30 days evaluations, the membranes were absent in all groups. It is concluded that the chitosan-based membranes were successfully attained and presented comparable resorption times to collagen membranes.
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Speit G, Gelbke HP, Pallapies D, Morfeld P. Occupational Exposure to Formaldehyde, Hematotoxicity and Leukemia-Specific Chromosome Changes in Cultured Myeloid Progenitor Cells – Letter. Cancer Epidemiol Biomarkers Prev 2010; 19:1882-4; author reply 1884-5. [DOI: 10.1158/1055-9965.epi-10-0155] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Hashimoto K, Nakajima Y, Matsumura S, Chatani F. An in vitro micronucleus assay with size-classified micronucleus counting to discriminate aneugens from clastogens. Toxicol In Vitro 2010; 24:208-16. [DOI: 10.1016/j.tiv.2009.09.006] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Revised: 07/24/2009] [Accepted: 09/04/2009] [Indexed: 11/15/2022]
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Speit G, Fröhler-Keller M, Schütz P, Neuss S. Low sensitivity of the comet assay to detect acetaldehyde-induced genotoxicity. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2008; 657:93-7. [DOI: 10.1016/j.mrgentox.2008.07.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2008] [Revised: 07/29/2008] [Accepted: 07/30/2008] [Indexed: 11/27/2022]
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Tests for genotoxicity and mutagenicity of furan and its metabolite cis-2-butene-1,4-dial in L5178Y tk+/− mouse lymphoma cells. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2008; 657:127-32. [DOI: 10.1016/j.mrgentox.2008.08.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2008] [Revised: 07/22/2008] [Accepted: 08/16/2008] [Indexed: 11/23/2022]
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Speit G, Schmid O, Neuss S, Schütz P. Genotoxic effects of formaldehyde in the human lung cell line A549 and in primary human nasal epithelial cells. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2008; 49:300-307. [PMID: 18366098 DOI: 10.1002/em.20386] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The alkaline comet assay was used to further characterize the induction of DNA-protein crosslinks (DPX) by formaldehyde (FA) and their removal in the human lung cell line A549 and in primary human nasal epithelial cells (HNEC). DPX were indirectly measured as the reduction of gamma ray-induced DNA migration. FA induced DPX in A549 cells in a concentration-related manner in the range of 100-300 microM. This result is in agreement with previous studies using different mammalian cell lines. The main new findings of the present study are: (i) Determination of cytotoxicity in relation to genotoxicity strongly depend on the method used. Cytotoxicity measured as the reduction in cell counts 48 hr after addition of FA to the cultures occurred parallel to the induction of DPX while colony forming ability was already reduced at 10 times lower FA concentrations; (ii) DPX induced by a 1-hr FA treatment were completely removed within 8 hr cultivation in fresh medium while in the presence of FA in the medium DPX levels remained unchanged for 24 hr; (iii) Induction and removal of DPX did not fundamentally differ between exponentially growing and confluent A549 cultures; (iv) Slowly proliferating HNEC showed the same sensitivity towards FA-induced DPX as A549 cells (i.e. the same FA concentrations induced DPX under the same experimental conditions) and removed DPX with a similar efficiency. In summary, these results contribute to a better understanding of the genotoxic activity of FA in vitro and indicate that the tested cultured primary and permanent human cells do not differ fundamentally with regard to the processing of FA-induced primary genotoxic effects.
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Affiliation(s)
- Günter Speit
- Institut für Humangenetik, Universität Ulm, Ulm, Germany.
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