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Yu B, Shi R, Liu C, Liu Z, Shen P, Hu J, Shi F. pH-responsive gelatin polymer-coated silica-based mesoporous composites for the sustained-release of indomethacin. Heliyon 2023; 9:e13705. [PMID: 36873513 PMCID: PMC9976327 DOI: 10.1016/j.heliyon.2023.e13705] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 02/02/2023] [Accepted: 02/08/2023] [Indexed: 02/15/2023] Open
Abstract
This paper prepared drug-loaded mesoporous silica composites with a pH-responsive type. These composites were prepared by using three-dimensional caged silica (SBA-16) as the carrier, 3-aminopropyl trimethoxysilane (APTMS) as the silane coupling agent, and indomethacin (IMC) as the loaded drug, respectively. The drug-loaded precursor NH2-SBA-16@IMC was prepared by solution diffusion adsorption. Finally, the pH-responsive drug-loaded composites NH2-SBA-16@IMC@GA were synthesized by wrapping the NH2-SBA-16@IMC with a condensation polymer of gelatin and glutaraldehyde. The composition and structure of the drug-loaded composites were characterized by FT-IR, XRD, TG, SEM, TEM, and N2 adsorption-desorption. The in vitro simulated release performance of the drug-loaded composites was investigated at 37 °C under three pH conditions. The results show that the NH2-SBA-16@IMC@GA can be released in response to specific pH environment, which can effectively control the release speed of the indomethacin.
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Affiliation(s)
- Bo Yu
- School of Chemical Engineering & Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, China.,College of Pharmacy, Changchun University of Chinese Medicine, Changchun 130117, China
| | - Ruiping Shi
- School of Chemical Engineering & Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, China
| | - Chunlai Liu
- School of Chemical Engineering & Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, China
| | - Zelong Liu
- School of Chemical Engineering & Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, China
| | - Peihang Shen
- School of Chemical Engineering & Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, China
| | - Jianglei Hu
- School of Chemical Engineering & Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, China
| | - Fengwei Shi
- School of Chemical Engineering & Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, China
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Mononuclear Perfluoroalkyl-Heterocyclic Complexes of Pd(II): Synthesis, Structural Characterization and Antimicrobial Activity. Molecules 2020; 25:molecules25194487. [PMID: 33007913 PMCID: PMC7582383 DOI: 10.3390/molecules25194487] [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] [Received: 08/28/2020] [Revised: 09/20/2020] [Accepted: 09/28/2020] [Indexed: 11/17/2022] Open
Abstract
Two mononuclear Pd(II) complexes [PdCl2(pfptp)] (1) and [PdCl2(pfhtp)] (2), with ligands 2-(3-perfluoropropyl-1-methyl-1,2,4-triazole-5yl)-pyridine (pfptp) and 2-(3-perfluoroheptyl-1-methyl-1,2,4-triazole-5yl)-pyridine (pfhtp), were synthesized and structurally characterized. The two complexes showed a bidentate coordination of the ligand occurring through N atom of pyridine ring and N4 atom of 1,2,4-triazole. Both complexes showed antimicrobial activity when tested against both Gram-negative and Gram-positive bacterial strains.
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Presentato A, Armetta F, Spinella A, Chillura Martino DF, Alduina R, Saladino ML. Formulation of Mesoporous Silica Nanoparticles for Controlled Release of Antimicrobials for Stone Preventive Conservation. Front Chem 2020; 8:699. [PMID: 32974275 PMCID: PMC7471835 DOI: 10.3389/fchem.2020.00699] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 07/07/2020] [Indexed: 12/21/2022] Open
Abstract
The biotic deterioration of artifacts of archaeological and artistic interest mostly relies on the action of microorganisms capable of thriving under the most disparate environmental conditions. Thus, to attenuate biodeterioration phenomena, biocides can be used by the restorers to prevent or slow down the microbial growth. However, several factors such as biocide half-life, its wash-out because of environmental conditions, and its limited time of action make necessary its application repeatedly, leading to negative economic implications. Sound and successful treatments are represented by controlled release systems (CRSs) based on porous materials. Here, we report on the design and development of a CRS system based on mesoporous silica nanoparticles (MSNs), as a carrier, and loaded with a biocide. MSNs, with a diameter of 55 nm and cylindrical pores of ca. 3-8 nm arranged as parallel arrays concerning the NP diameter, and with 422 m2/g of specific surface area were synthesized by the sol-gel method assisted by oil in water emulsion. Biocide loading and release were carried out in water and monitored by UV-Vis Spectroscopy; in addition, microbiological assay was performed using as control the MCM-41 mesoporous silica loaded with the same biocide. The role of specific supramolecular interaction in regulating the release is discussed. Further, we demonstrated that this innovative formulation was useful in inhibiting the in vitro growth of Kocuria rhizophila, an environmental Gram-positive bacterial strain. Besides, the CRS here prepared reduced the bacterial biomass contaminating a real case study (i.e., stone derived from the Santa Margherita cave located in Sicily, Italy), after several months of treatment thus opening for innovative treatments of deteriorated stone artifacts.
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Affiliation(s)
- Alessandro Presentato
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), University of Palermo, Palermo, Italy
| | - Francesco Armetta
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), University of Palermo, Palermo, Italy
| | - Alberto Spinella
- Advanced Technologies Network (ATeN) Center, University of Palermo, Palermo, Italy
| | - Delia Francesca Chillura Martino
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), University of Palermo, Palermo, Italy.,Advanced Technologies Network (ATeN) Center, University of Palermo, Palermo, Italy
| | - Rosa Alduina
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), University of Palermo, Palermo, Italy
| | - Maria Luisa Saladino
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), University of Palermo, Palermo, Italy
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Saladino ML, Markowska M, Carmone C, Cancemi P, Alduina R, Presentato A, Scaffaro R, Biały D, Hasiak M, Hreniak D, Wawrzyńska M. Graphene Oxide Carboxymethylcellulose Nanocomposite for Dressing Materials. MATERIALS 2020; 13:ma13081980. [PMID: 32340390 PMCID: PMC7216044 DOI: 10.3390/ma13081980] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/19/2020] [Accepted: 04/20/2020] [Indexed: 12/14/2022]
Abstract
Sore, infected wounds are a major clinical issue, and there is thus an urgent need for novel biomaterials as multifunctional constituents for dressings. A set of biocomposites was prepared by solvent casting using different concentrations of carboxymethylcellulose (CMC) and exfoliated graphene oxide (Exf-GO) as a filler. Exf-GO was first obtained by the strong oxidation and exfoliation of graphite. The structural, morphological and mechanical properties of the composites (CMCx/Exf-GO) were evaluated, and the obtained composites were homogenous, transparent and brownish in color. The results confirmed that Exf-GO may be homogeneously dispersed in CMC. It was found that the composite has an inhibitory activity against the Gram-positive Staphylococcus aureus, but not against Gram-negative Pseudomonas aeruginosa. At the same time, it does not exhibit any cytotoxic effect on normal fibroblasts.
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Affiliation(s)
- Maria Luisa Saladino
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale Delle Scienze Bld. 16-17, I-90128 Palermo, Italy; (C.C.); (P.C.); (R.A.); (A.P.)
- Correspondence: (M.L.S.); (D.B.); (M.W.)
| | - Marta Markowska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, PL-50-422 Wrocław, Poland; (M.M.); (D.H.)
- Carbonmed Spółka z Ograniczoną Odpowiedzialnością, ul. Okólna 2, 50-422 Wrocław, Poland
| | - Clara Carmone
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale Delle Scienze Bld. 16-17, I-90128 Palermo, Italy; (C.C.); (P.C.); (R.A.); (A.P.)
| | - Patrizia Cancemi
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale Delle Scienze Bld. 16-17, I-90128 Palermo, Italy; (C.C.); (P.C.); (R.A.); (A.P.)
| | - Rosa Alduina
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale Delle Scienze Bld. 16-17, I-90128 Palermo, Italy; (C.C.); (P.C.); (R.A.); (A.P.)
| | - Alessandro Presentato
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale Delle Scienze Bld. 16-17, I-90128 Palermo, Italy; (C.C.); (P.C.); (R.A.); (A.P.)
| | - Roberto Scaffaro
- Department of Engineering, University of Palermo, Viale Delle Scienze Bld. 6, I-90128 Palermo, Italy;
| | - Dariusz Biały
- Carbonmed Spółka z Ograniczoną Odpowiedzialnością, ul. Okólna 2, 50-422 Wrocław, Poland
- Division of Preclinical Research, Faculty of Health Sciences, Wroclaw Medical University, Ludwika Pasteura 1, PL-50-367 Wrocław, Poland
- Correspondence: (M.L.S.); (D.B.); (M.W.)
| | - Mariusz Hasiak
- Department of Mechanics and Material Science Engineering, Wrocław University of Science and Technology, Smoluchowskiego 25, PL-50-370 Wrocław, Poland;
| | - Dariusz Hreniak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, PL-50-422 Wrocław, Poland; (M.M.); (D.H.)
- Carbonmed Spółka z Ograniczoną Odpowiedzialnością, ul. Okólna 2, 50-422 Wrocław, Poland
| | - Magdalena Wawrzyńska
- Carbonmed Spółka z Ograniczoną Odpowiedzialnością, ul. Okólna 2, 50-422 Wrocław, Poland
- Division of Preclinical Research, Faculty of Health Sciences, Wroclaw Medical University, Ludwika Pasteura 1, PL-50-367 Wrocław, Poland
- Correspondence: (M.L.S.); (D.B.); (M.W.)
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