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Querido MM, Paulo I, Hariharakrishnan S, Rocha D, Barbosa N, Galhano dos Santos R, Bordado JM, Teixeira JP, Pereira CC. Self-Disinfecting Paints with the Natural Antimicrobial Substances: Colophony and Curcumin. Antibiotics (Basel) 2021; 10:antibiotics10111351. [PMID: 34827290 PMCID: PMC8615116 DOI: 10.3390/antibiotics10111351] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/26/2021] [Accepted: 11/02/2021] [Indexed: 11/16/2022] Open
Abstract
The risk of infection arising from indirect sources-namely, contaminated surfaces-has been proved, particularly in healthcare facilities. In the attempt to minimize this problem, innumerable research projects involving the development of surfaces with self-disinfecting properties are being conducted. In this work, wall-paints with self-disinfecting properties were developed with the scope of being applied in environments prone to contamination, such as those at healthcare settings. Our approach was to develop new paint formulations containing two natural plant-based products with known antimicrobial activity-colophony (CLF) and curcumin (CUR). The natural substances were separately incorporated on a commercial paint and their antibacterial activity was evaluated with several bacterial species following ISO 22196. To assess the paints' safety, cytotoxicity tests were performed on HaCaT and A549 cell lines, using tests on extracts and direct contact tests, as suggested by the standardized protocol ISO 10993. In general, both paints containing CLF and CUR were able to reduce the bacterial growth after 24 h, compared with the control, the commercial unmodified paint. Colophony was even able to reduce the number of culturable bacteria by over 2 log for Staphylococcus aureus, Escherichia coli, and Bacillus cereus. Regarding the cytotoxicity tests performed (WST-1, NRU, and LDH), both formulations revealed promising results regardless of the methodology used.
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Affiliation(s)
- Micaela Machado Querido
- Environmental Health Department, National Institute of Health, 4000-055 Porto, Portugal; (M.M.Q.); (C.C.P.)
- EPIUnit, Institute of Public Health, University of Porto, 4050-600 Porto, Portugal
- Laboratory for Integrative and Translational Research in Population Health (ITR), 4050-600 Porto, Portugal
- Instituto Ciências Biomédicas Abel Salazar, University of Porto, 4050-313 Porto, Portugal
| | - Ivo Paulo
- CERENA—Centre for Natural Resources and the Environment, Instituto Superior Técnico, 1049-001 Lisboa, Portugal; (I.P.); (S.H.); (R.G.d.S.); (J.M.B.)
| | - Sriram Hariharakrishnan
- CERENA—Centre for Natural Resources and the Environment, Instituto Superior Técnico, 1049-001 Lisboa, Portugal; (I.P.); (S.H.); (R.G.d.S.); (J.M.B.)
| | - Daniel Rocha
- Barbot—Indústria de Tintas, S.A., 4410-295 Vila Nova de Gaia, Portugal; (D.R.); (N.B.)
| | - Nuno Barbosa
- Barbot—Indústria de Tintas, S.A., 4410-295 Vila Nova de Gaia, Portugal; (D.R.); (N.B.)
| | - Rui Galhano dos Santos
- CERENA—Centre for Natural Resources and the Environment, Instituto Superior Técnico, 1049-001 Lisboa, Portugal; (I.P.); (S.H.); (R.G.d.S.); (J.M.B.)
| | - João Moura Bordado
- CERENA—Centre for Natural Resources and the Environment, Instituto Superior Técnico, 1049-001 Lisboa, Portugal; (I.P.); (S.H.); (R.G.d.S.); (J.M.B.)
| | - João Paulo Teixeira
- Environmental Health Department, National Institute of Health, 4000-055 Porto, Portugal; (M.M.Q.); (C.C.P.)
- EPIUnit, Institute of Public Health, University of Porto, 4050-600 Porto, Portugal
- Laboratory for Integrative and Translational Research in Population Health (ITR), 4050-600 Porto, Portugal
- Correspondence:
| | - Cristiana Costa Pereira
- Environmental Health Department, National Institute of Health, 4000-055 Porto, Portugal; (M.M.Q.); (C.C.P.)
- EPIUnit, Institute of Public Health, University of Porto, 4050-600 Porto, Portugal
- Laboratory for Integrative and Translational Research in Population Health (ITR), 4050-600 Porto, Portugal
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Gomes IB, Querido MM, Teixeira JP, Pereira CC, Simões LC, Simões M. Prolonged exposure of Stenotrophomonas maltophilia biofilms to trace levels of clofibric acid alters antimicrobial tolerance and virulence. Chemosphere 2019; 235:327-335. [PMID: 31265978 DOI: 10.1016/j.chemosphere.2019.06.184] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 06/13/2019] [Accepted: 06/24/2019] [Indexed: 06/09/2023]
Abstract
The presence of pharmaceuticals in water sources, including in drinking water (DW), is increasingly being recognized as an emerging and global concern for the environment and public health. Based on the principles of the "One Health" initiative, the present work aims to understand the effects of clofibric acid (CA), a lipid regulator, on the behavior of a selected bacterium isolated from drinking water (DW). Biofilms of the opportunistic pathogen Stenotrophomonas maltophilia were exposed to CA for 12 weeks at 170 and 17000 ng/L. The effects of CA were evaluated on planktonic S. maltophilia susceptibility to chlorine and antibiotics (amoxicillin, ciprofloxacin, erythromycin, kanamycin, levofloxacin, oxacillin, spectinomycin, tetracycline and trimethoprim-sulfamethoxazole), biofilm formation, motility, siderophores production and on the adhesion and internalization of the human colon adenocarcinoma cell line (HT-29). It was found that CA did not affect planktonic S. maltophilia tolerance to chlorine exposure. Additionally, no effects were observed on biofilm formation, motility and siderophores production. However, biofilms formed after CA exposure were more tolerant to chlorine disinfection and lower CFU reductions were obtained. Of additional concern was the effect of CA exposure on S. maltophilia increased tolerance to erythromycin. CA exposure also slightly reduced S. maltophilia ability to invade HT-29 cells. In conclusion, this work reinforces the importance of studying the effects of non-antibiotic contaminants on the behavior of environmental microorganisms, particularly their role as drivers affecting resistance evolution and selection.
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Affiliation(s)
- I B Gomes
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465, Porto, Portugal
| | - M M Querido
- Department of Environmental Health, Portuguese National Institute of Health DR. Ricardo Jorge, Rua Alexandre Herculano, 321, 4000-055, Porto, Portugal; EPIUnit - Institute of Public Health, University of Porto, Rua das Taipas, 135, 4050-600, Porto, Portugal
| | - J P Teixeira
- Department of Environmental Health, Portuguese National Institute of Health DR. Ricardo Jorge, Rua Alexandre Herculano, 321, 4000-055, Porto, Portugal; EPIUnit - Institute of Public Health, University of Porto, Rua das Taipas, 135, 4050-600, Porto, Portugal
| | - C C Pereira
- Department of Environmental Health, Portuguese National Institute of Health DR. Ricardo Jorge, Rua Alexandre Herculano, 321, 4000-055, Porto, Portugal; EPIUnit - Institute of Public Health, University of Porto, Rua das Taipas, 135, 4050-600, Porto, Portugal
| | - L C Simões
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - M Simões
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465, Porto, Portugal.
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Querido MM, Aguiar L, Neves P, Pereira CC, Teixeira JP. Self-disinfecting surfaces and infection control. Colloids Surf B Biointerfaces 2019; 178:8-21. [PMID: 30822681 PMCID: PMC7127218 DOI: 10.1016/j.colsurfb.2019.02.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 02/04/2019] [Accepted: 02/05/2019] [Indexed: 12/27/2022]
Abstract
According to World Health Organization, every year in the European Union, 4 million patients acquire a healthcare associated infection. Even though some microorganisms represent no threat to healthy people, hospitals harbor different levels of immunocompetent individuals, namely patients receiving immunosuppressors, with previous infections, or those with extremes of age (young children and elderly), requiring the implementation of effective control measures. Public spaces have also been found an important source of infectious disease outbreaks due to poor or none infection control measures applied. In both places, surfaces play a major role on microorganisms' propagation, yet they are very often neglected, with very few guidelines about efficient cleaning measures and microbiological assessment available. To overcome surface contamination problems, new strategies are being designed to limit the microorganisms' ability to survive over surfaces and materials. Surface modification and/or functionalization to prevent contamination is a hot-topic of research and several different approaches have been developed lately. Surfaces with anti-adhesive properties, with incorporated antimicrobial substances or modified with biological active metals are some of the strategies recently proposed. This review intends to summarize the problems associated with contaminated surfaces and their importance on infection spreading, and to present some of the strategies developed to prevent this public health problem, namely some already being commercialized.
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Affiliation(s)
- Micaela Machado Querido
- National Institute of Health, Environmental Health Department, Porto, Portugal; EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal
| | - Lívia Aguiar
- National Institute of Health, Environmental Health Department, Porto, Portugal
| | - Paula Neves
- National Institute of Health, Environmental Health Department, Porto, Portugal
| | - Cristiana Costa Pereira
- National Institute of Health, Environmental Health Department, Porto, Portugal; EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal.
| | - João Paulo Teixeira
- National Institute of Health, Environmental Health Department, Porto, Portugal; EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal
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Bessa MJ, Brandão F, Querido MM, Costa C, Pereira CC, Valdiglesias V, Laffon B, Carriere M, Teixeira JP, Fraga S. Optimization of the harvesting and freezing conditions of human cell lines for DNA damage analysis by the alkaline comet assay. Mutat Res 2018; 845:402994. [PMID: 31561887 DOI: 10.1016/j.mrgentox.2018.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 12/06/2018] [Accepted: 12/09/2018] [Indexed: 10/27/2022]
Abstract
The comet assay is a commonly used method for in vitro and in vivo genotoxicity assessment. This versatile assay can be performed in a wide range of tissues and cell types. Although most of the studies use samples immediately processed after collection, frozen biological samples can also be used. The present study aimed to optimize a collection and freezing protocol to minimize the DNA damage associated with these procedures in human cell line samples for comet assay analysis. This study was conducted in glial A172 and lung alveolar epithelial A549 cells. Two cell detachment methods (mechanical vs enzymatic) and two cryoprotective media [FBS + 10% DMSO vs Cell Culture Media (CCM) + 10% DMSO] were tested, and DNA damage assessed at four time points following storage at -80 °C (one, two, four and eight weeks). In both cell lines, no differences in % tail intensity were detected between fresh and frozen cells up to eight weeks, irrespective of the harvesting method and freezing medium used. However, freshly isolated A172 cells exhibited a significant lower DNA damage when resuspended in CCM + 10% DMSO, while for A549 fresh cells the preferable harvesting method was the enzymatic one since it induced less DNA damage. Although both harvesting methods and cryoprotective media tested were found suitable, our data indicate that enzymatic harvesting and cryopreservation in CCM + 10% DMSO is a preferable method for DNA integrity preservation of human cell line samples for comet assay analysis. Our data also suggest that CCM is a preferable and cost-effective alternative to FBS in cryopreservation media. This optimized protocol allows the analysis of in vitro cell samples collected and frozen at different locations, with minimal interference on the basal DNA strand break levels in samples kept frozen up to eight weeks.
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Affiliation(s)
- Maria João Bessa
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Fátima Brandão
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Micaela Machado Querido
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Carla Costa
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Cristiana Costa Pereira
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Vanessa Valdiglesias
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Universidade da Coruña, DICOMOSA Group, Department of Psychology, Area of Psychobiology, Coruña, Spain.
| | - Blanca Laffon
- Universidade da Coruña, DICOMOSA Group, Department of Psychology, Area of Psychobiology, Coruña, Spain.
| | - Marie Carriere
- Université Grenoble-Alpes, CEA, CNRS, INAC-SyMMES, Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST), France.
| | - João Paulo Teixeira
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Sónia Fraga
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
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Felgueiras HP, Wang LM, Ren KF, Querido MM, Jin Q, Barbosa MA, Ji J, Martins MCL. Octadecyl Chains Immobilized onto Hyaluronic Acid Coatings by Thiol-ene "Click Chemistry" Increase the Surface Antimicrobial Properties and Prevent Platelet Adhesion and Activation to Polyurethane. ACS Appl Mater Interfaces 2017; 9:7979-7989. [PMID: 28165702 DOI: 10.1021/acsami.6b16415] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Infection and thrombus formation are still the biggest challenges for the success of blood contact medical devices. This work aims the development of an antimicrobial and hemocompatible biomaterial coating through which selective binding of albumin (passivant protein) from the bloodstream is promoted and, thus, adsorption of other proteins responsible for bacterial adhesion and thrombus formation can be prevented. Polyurethane (PU) films were coated with hyaluronic acid, an antifouling agent, that was previously modified with thiol groups (HA-SH), using polydopamine as the binding agent. Octadecyl acrylate (C18) was used to attract albumin since it resembles the circulating free fatty acids and albumin is a fatty acid transporter. Thiol-ene "click chemistry" was explored for C18 immobilization on HA-SH through a covalent bond between the thiol groups from the HA and the alkene groups from the C18 chains. Surfaces were prepared with different C18 concentrations (0, 5, 10, and 20%) and successful immobilization was demonstrated by scanning electron microscopy (SEM), water contact angle determinations, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). The ability of surfaces to bind albumin selectively was determined by quartz crystal microbalance with dissipation (QCM-D). Albumin adsorption increased in response to the hydrophobic nature of the surfaces, which augmented with C18 saturation. HA-SH coating reduced albumin adsorption to PU. C18 immobilized onto HA-SH at 5% promoted selective binding of albumin, decreased Staphylococcus aureus adhesion and prevented platelet adhesion and activation to PU in the presence of human plasma. C18/HA-SH coating was established as an innovative and promising strategy to improve the antimicrobial properties and hemocompatibility of any blood contact medical device.
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Affiliation(s)
- Helena P Felgueiras
- i3S, Instituto de Investigação e Inovação em Saúde, ‡INEB, Instituto de Engenharia Biomédica , Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - L M Wang
- Department of Polymer Science & Engineering, Zhejiang University , Hangzhou 310027, China
| | - K F Ren
- Department of Polymer Science & Engineering, Zhejiang University , Hangzhou 310027, China
| | - M M Querido
- i3S, Instituto de Investigação e Inovação em Saúde, ‡INEB, Instituto de Engenharia Biomédica , Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Q Jin
- Department of Polymer Science & Engineering, Zhejiang University , Hangzhou 310027, China
| | - M A Barbosa
- i3S, Instituto de Investigação e Inovação em Saúde, ‡INEB, Instituto de Engenharia Biomédica , Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - J Ji
- Department of Polymer Science & Engineering, Zhejiang University , Hangzhou 310027, China
| | - M C L Martins
- i3S, Instituto de Investigação e Inovação em Saúde, ‡INEB, Instituto de Engenharia Biomédica , Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
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