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Esparza-González SC, Sánchez-Valdés S, Ramírez-Barrón SN, Loera-Arias MJ, Bernal J, Meléndez-Ortiz HI, Betancourt-Galindo R. Effects of different surface modifying agents on the cytotoxic and antimicrobial properties of ZnO nanoparticles. Toxicol In Vitro 2016; 37:134-141. [PMID: 27666655 DOI: 10.1016/j.tiv.2016.09.020] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [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: 04/15/2016] [Revised: 08/23/2016] [Accepted: 09/21/2016] [Indexed: 02/06/2023]
Abstract
Zinc oxide (ZnO) nanoparticles (NPs) have received considerable attention in the medical field because of their antibacterial properties, primarily for killing and reducing the activity of numerous microorganisms. The purpose of this study was to determine whether surface-modified ZnO NPs exhibit different properties compared with unmodified ZnO. The antimicrobial and cytotoxic properties of modified ZnO NPs as well as their effects on inflammatory cytokine production were evaluated. ZnO NPs were prepared using a wet chemical method. Then, the surfaces of these NPs were modified using 3-aminopropyltriethoxysilane (APTES) and dimethyl sulfoxide (DMSO) as modifying agents via a chemical hydrolysis method. According to infrared spectroscopy analysis (FTIR), the structure of the ZnO remained unchanged after modification. Antibacterial assays demonstrated that APTES modification is more effective at inducing an antimicrobial effect against Gram-negative bacteria than against Gram-positive bacteria. Cytotoxicity studies showed that cell viability was dose-dependent; moreover, pristine and APTES-modified ZnO exhibited low cytotoxicity, whereas DMSO-modified ZnO exhibited toxicity even at a low NP concentration. An investigation of inflammatory cytokine production demonstrated that the extent of stimulation was related to the ZnO NP concentration but not to the surface modification, except for IFN-γ and IL-10, which were not detected even at high NP concentrations.
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Affiliation(s)
- S C Esparza-González
- Facultad de Medicina U.S., Universidad Autónoma de Coahuila Saltillo, Coahuila, Mexico
| | - S Sánchez-Valdés
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna 140, Saltillo, Coahuila 25294, Mexico
| | - S N Ramírez-Barrón
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna 140, Saltillo, Coahuila 25294, Mexico
| | - M J Loera-Arias
- Departamento de Histología, Facultad de Medicina UANL, Monterrey, Nuevo León, Mexico
| | - J Bernal
- Unidad Médica Ojo Caliente, Av. Ojo Caliente 901-A Aguascalientes, Ags, Mexico
| | - H Iván Meléndez-Ortiz
- CONACyT-Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna 140, Saltillo, Coahuila 25294, Mexico
| | - R Betancourt-Galindo
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna 140, Saltillo, Coahuila 25294, Mexico.
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Betancourt-Galindo R, Cabrera Miranda C, Puente Urbina BA, Castañeda-Facio A, Sánchez-Valdés S, Mata Padilla J, García Cerda LA, Perera YA, Rodríguez-Fernández OS. Encapsulation of Silver Nanoparticles in a Polystyrene Matrix by Miniemulsion Polymerization and Its Antimicrobial Activity. ACTA ACUST UNITED AC 2012. [DOI: 10.5402/2012/186851] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Surface-modified silver nanoparticles (NAg) were encapsulated into a polystyrene (PS) matrix by in situ miniemulsion polymerization. Silver nanoparticles were modified with 3-aminopropyltrimethoxysilane (APTMS) that acts as a coupling agent and costabilizer in the polymerization reaction. The PS-Nag nanocomposites synthesized via miniemulsion polymerization were made at two different concentrations of the initiator (0.7 and 2.5 g/L in H2O); at higher concentration of the initiator the conversion and efficiency of encapsulation increases, and the average particle size decreases. The PS-NAg composites showed excellent antimicrobial performance toward bacteria such as Escherichia coli and Staphylococcus aureus.
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Affiliation(s)
- R. Betancourt-Galindo
- Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna Hermosillo no. 140, 25253 Saltillo, COAH, Mexico
| | - C. Cabrera Miranda
- Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna Hermosillo no. 140, 25253 Saltillo, COAH, Mexico
| | - B. A. Puente Urbina
- Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna Hermosillo no. 140, 25253 Saltillo, COAH, Mexico
| | - A. Castañeda-Facio
- Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna Hermosillo no. 140, 25253 Saltillo, COAH, Mexico
| | - S. Sánchez-Valdés
- Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna Hermosillo no. 140, 25253 Saltillo, COAH, Mexico
| | - J. Mata Padilla
- Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna Hermosillo no. 140, 25253 Saltillo, COAH, Mexico
| | - L. A. García Cerda
- Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna Hermosillo no. 140, 25253 Saltillo, COAH, Mexico
| | - Y. A. Perera
- Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna Hermosillo no. 140, 25253 Saltillo, COAH, Mexico
| | - O. S. Rodríguez-Fernández
- Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna Hermosillo no. 140, 25253 Saltillo, COAH, Mexico
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Lozano T, Laria J, Lafleur P, Sánchez-Valdés S, Rodríguez-González F, Morales-Cepeda A. Beta phase in polypropylene induced by shear in a single-screw extruder. POLYM ENG SCI 2012. [DOI: 10.1002/pen.23114] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ramírez-Vargas E, Sandoval-Arellano Z, Hernández-Valdez JS, Martínez-Colunga JG, Sánchez-Valdés S. Compatibility of HDPE/postconsumer HDPE blends using compatibilizing agents. J Appl Polym Sci 2006. [DOI: 10.1002/app.23214] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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López-Quintanilla ML, Sánchez-Valdés S, Ramos de Valle LF, Medellín-Rodríguez FJ. Effect of some compatibilizing agents on clay dispersion of polypropylene-clay nanocomposites. J Appl Polym Sci 2006. [DOI: 10.1002/app.23262] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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