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Bouchmella K, Campanaro FD, Mondo GB, Santos MI, Franco CH, Moraes CB, Biolley C, Mehdi A, Cardoso MB. Tetracycline@silver ions-functionalized mesoporous silica for high bactericidal activity at ultra-low concentration. Nanomedicine (Lond) 2018; 13:1731-1751. [DOI: 10.2217/nnm-2018-0027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: Polyether pores were designed and tetracycline-loaded mesoporous silica materials, with their surface decorated by silver ions, were prepared, with the aim of reaching high antibacterial activity. Meanwhile, mammalian cell cytotoxicity and hemolytic effects were not observed using material concentrations tenfold the ones optimized for the bactericidal tests. Methods: Pore size was tuned by changing the polyether content and the surface was covalently decorated with silver thiolate groups. Results: We showed that the biological activity was enhanced by modulating silver ions and tetracycline releases by tuning silver thiolate group concentration on the silica surface and/or by modulating the pH of the environment. Conclusion: The combined use of tetracycline and silver ions with the mesoporous drug-delivery carrier was a very effective strategy against susceptible and tetracycline-resistant Escherichia coli bacteria.
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Affiliation(s)
- Karim Bouchmella
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brasil
- Laboratório Nacional de Luz Síncrotron (LNLS), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brasil
- Instituto de Química (IQ), Universidade Estadual de Campinas (UNICAMP), CEP 13083-970, Caixa Postal 6154, Campinas, São Paulo, Brasil
| | - Felipe Davi Campanaro
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brasil
- Laboratório Nacional de Luz Síncrotron (LNLS), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brasil
| | - Gabriela Borba Mondo
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brasil
- Laboratório Nacional de Luz Síncrotron (LNLS), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brasil
- Instituto de Química (IQ), Universidade Estadual de Campinas (UNICAMP), CEP 13083-970, Caixa Postal 6154, Campinas, São Paulo, Brasil
| | - Murilo Izidoro Santos
- Laboratório Nacional de Luz Síncrotron (LNLS), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brasil
| | - Caio Haddad Franco
- Laboratório Nacional de Biociências (LNBio), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brasil
| | - Carolina Borsoi Moraes
- Laboratório Nacional de Biociências (LNBio), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brasil
| | - Christine Biolley
- Institut Charles Gerhardt Montpellier (ICGM), UMR5253, University of Montpellier, CNRS, ENSCM, 34095 Montpellier, France
| | - Ahmad Mehdi
- Institut Charles Gerhardt Montpellier (ICGM), UMR5253, University of Montpellier, CNRS, ENSCM, 34095 Montpellier, France
| | - Mateus Borba Cardoso
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brasil
- Laboratório Nacional de Luz Síncrotron (LNLS), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brasil
- Instituto de Química (IQ), Universidade Estadual de Campinas (UNICAMP), CEP 13083-970, Caixa Postal 6154, Campinas, São Paulo, Brasil
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3
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Bjerk TR, de Menezes EW, Pereira MB, Caramão EB, Benvenutti EV, Zini CA. Silver bonded to silica gel applied to the separation of polycyclic aromatic sulfur heterocycles in heavy gas oil. J Chromatogr A 2016; 1470:104-110. [PMID: 27693015 DOI: 10.1016/j.chroma.2016.09.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Revised: 09/07/2016] [Accepted: 09/26/2016] [Indexed: 10/20/2022]
Abstract
Silica gel containing silver ions was prepared and characterized. Silica was organofunctionalized with 3-mercaptopropyl group by using grafting reaction followed by silver ions adsorption (silver covalently bonded to mercaptopropyl silca gel, Ag-MPSG). The organofunctionalization and silver coordination were observed by transmission infrared spectroscopy and elemental analyses (CHN and EDS). The textural characteristics were studied by N2 adsorption-desorption isotherms. Additionally, optical properties were studied by diffuse reflectance spectroscopy. The Ag-MPSG material was employed as stationary phase for the first time for fractionation of a heavy gas oil sample resulting in a fraction that is richer in polycyclic aromatic sulfur heterocycles (PASH). The fractions were analyzed by comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometric detector and Ag-MPSG material provided similar fractionation performance when compared to conventional material [palladium covalently bonded to mercaptopropyl silca gel, Pd(II)-MPSG] usually employed for the same purpose and as the cost of silver is less than the one of palladium, the cost of the fractionation phase was reduced.
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Affiliation(s)
- Thiago R Bjerk
- "PGCIMAT"-Instituto de Química, UFRGS, CEP 91501-970 Porto Alegre, RS, Brazil
| | - Eliana W de Menezes
- "PGCIMAT"-Instituto de Química, UFRGS, CEP 91501-970 Porto Alegre, RS, Brazil
| | | | - Elina B Caramão
- "PGCIMAT"-Instituto de Química, UFRGS, CEP 91501-970 Porto Alegre, RS, Brazil; ITP, UNIT, CEP49032-490 Aracaju, SE, Brazil; INCT-E&A, Instituto Nacional de Ciência e Tecnologia em Energia e Meio Ambiente, CEP 40170-115 Salvador, BA, Brazil
| | | | - Cláudia A Zini
- "PGCIMAT"-Instituto de Química, UFRGS, CEP 91501-970 Porto Alegre, RS, Brazil; INCT-E&A, Instituto Nacional de Ciência e Tecnologia em Energia e Meio Ambiente, CEP 40170-115 Salvador, BA, Brazil.
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4
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Chen WH, Tseng YT, Hsieh S, Liu WC, Hsieh CW, Wu CW, Huang CH, Lin HY, Chen CW, Lin PY, Chau LK. Silanization of solid surfaces via mercaptopropylsilatrane: a new approach of constructing gold colloid monolayers. RSC Adv 2014. [DOI: 10.1039/c4ra05583g] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mercaptopropylsilatrane (MPS) was investigated as a novel self-assembled film on silica surfaces and also as a novel adhesive layer for the construction of a gold colloid monolayer on silica surfaces.
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Affiliation(s)
- Wen-Hao Chen
- Department of Chemistry and Biochemistry and Center for Nano Bio-Detection (AIM-HI)
- National Chung Cheng University
- Chiayi 62102, Taiwan
| | - Yen-Ta Tseng
- Department of Chemistry and Biochemistry and Center for Nano Bio-Detection (AIM-HI)
- National Chung Cheng University
- Chiayi 62102, Taiwan
| | - Shuchen Hsieh
- Department of Chemistry and Center for Biomedical Sensor Research
- National Sun Yat-Sen University
- Kaohsiung 804, Taiwan
- School of Pharmacy
- College of Pharmacy
| | - Wan-Chun Liu
- Department of Chemistry and Biochemistry and Center for Nano Bio-Detection (AIM-HI)
- National Chung Cheng University
- Chiayi 62102, Taiwan
| | - Chiung-Wen Hsieh
- Department of Chemistry and Center for Biomedical Sensor Research
- National Sun Yat-Sen University
- Kaohsiung 804, Taiwan
| | - Chin-Wei Wu
- Department of Chemistry and Biochemistry and Center for Nano Bio-Detection (AIM-HI)
- National Chung Cheng University
- Chiayi 62102, Taiwan
| | - Chen-Han Huang
- Department of Chemistry and Biochemistry and Center for Nano Bio-Detection (AIM-HI)
- National Chung Cheng University
- Chiayi 62102, Taiwan
| | - Hsing-Ying Lin
- Department of Chemistry and Biochemistry and Center for Nano Bio-Detection (AIM-HI)
- National Chung Cheng University
- Chiayi 62102, Taiwan
| | - Chao-Wen Chen
- Department of Chemistry and Biochemistry and Center for Nano Bio-Detection (AIM-HI)
- National Chung Cheng University
- Chiayi 62102, Taiwan
| | - Pei-Ying Lin
- Department of Chemistry and Center for Biomedical Sensor Research
- National Sun Yat-Sen University
- Kaohsiung 804, Taiwan
| | - Lai-Kwan Chau
- Department of Chemistry and Biochemistry and Center for Nano Bio-Detection (AIM-HI)
- National Chung Cheng University
- Chiayi 62102, Taiwan
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6
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Machado ME, de Menezes EW, Bregles LP, Caramão EB, Benvenutti EV, Zini CA. Palladium(II) chemically bonded to silica surface applied to the separation and identification of polycyclic aromatic sulfur heterocycles in heavy oil. J Sep Sci 2013; 36:1636-43. [DOI: 10.1002/jssc.201200773] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 02/06/2013] [Accepted: 02/12/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Maria Elisabete Machado
- LAAO - Laboratório de Química Analítica Ambiental e Oleoquímica; UFRGS - Universidade Federal do Rio Grande do Sul; RS Brasil
| | - Eliana Weber de Menezes
- LSS - Laboratório de Sólidos e Superfícies, Instituto de Química; UFRGS - Universidade Federal do Rio Grande do Sul; RS Brasil
| | - Lucas Panizzi Bregles
- LAAO - Laboratório de Química Analítica Ambiental e Oleoquímica; UFRGS - Universidade Federal do Rio Grande do Sul; RS Brasil
| | - Elina Bastos Caramão
- LAAO - Laboratório de Química Analítica Ambiental e Oleoquímica; UFRGS - Universidade Federal do Rio Grande do Sul; RS Brasil
| | - Edilson Valmir Benvenutti
- LSS - Laboratório de Sólidos e Superfícies, Instituto de Química; UFRGS - Universidade Federal do Rio Grande do Sul; RS Brasil
| | - Cláudia Alcaraz Zini
- LAAO - Laboratório de Química Analítica Ambiental e Oleoquímica; UFRGS - Universidade Federal do Rio Grande do Sul; RS Brasil
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