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Marques Gonçalves M, Florencio Maluf D, Pontarolo R, Ketzer Saul C, Almouazen E, Chevalier Y. Negatively charged chitosan nanoparticles prepared by ionotropic gelation for encapsulation of positively charged proteins. Int J Pharm 2023:123164. [PMID: 37356507 DOI: 10.1016/j.ijpharm.2023.123164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 03/21/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
The nanoprecipitation of hydrogel nanoparticles by complex coacervation is investigated through a systematic study of the popular chitosan-polyphosphate pair of polyelectrolytes with opposite charges at pH 4. Polyphosphates of varying molar masses and electrical charges are investigated as alternatives to the commonly used tripolyphosphate, so as to assess the influence of the strength of electrostatic interactions on the fabrication possibility, the size of hydrogel particles, and their overall charge. Sodium hexametaphosphate and sodium polyphosphate allow the manufacture of such nanoparticles with either a positive or a negative charge, depending on the chitosan/polyphosphate ratio and the order of mixing. The classical way of mixing by pouring the polyphosphate solution into the chitosan solution yields microparticles. Inverting the order of mixing by pouring the chitosan solution into the polyphosphate solution allows the precipitation of negatively charged nanoparticles with diameters in the range 100-200 nm. Such charge inversion of the chitosan into negative is not possible with the common TPP. It was achieved using sodium hexametaphosphate and sodium polyphosphate having a larger negative charge. Charge inversion of chitosan allows an efficient encapsulation of positively charged proteins with an improved encapsulation efficiency than in the usual TPP-based coacervate. The encapsulation of the bovine serum albumin at pH 4 is given as a case study of a positively charged protein.
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Affiliation(s)
- Melissa Marques Gonçalves
- Laboratory of Automatic Control, Chemical and Pharmaceutical Engineering (LAGEPP), University Claude Bernard Lyon 1, 69622 Villeurbanne, France; Federal University of Paraná (UFPR), 80210-170 Curitiba, Brazil
| | | | | | | | - Eyad Almouazen
- Laboratory of Automatic Control, Chemical and Pharmaceutical Engineering (LAGEPP), University Claude Bernard Lyon 1, 69622 Villeurbanne, France
| | - Yves Chevalier
- Laboratory of Automatic Control, Chemical and Pharmaceutical Engineering (LAGEPP), University Claude Bernard Lyon 1, 69622 Villeurbanne, France
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Hochheim S, Sampaio NMFM, da Cruz AF, Del Mercato LL, D'Amone E, da Silva BJG, Saul CK, de Oliveira CC, Riegel-Vidotti I. Preparation and Investigation of Thermally Annealed Zein-Propolis Electrospun Nanofibers for Biomedical Applications. Macromol Biosci 2023; 23:e2200524. [PMID: 36852933 DOI: 10.1002/mabi.202200524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 11/29/2022] [Revised: 02/15/2023] [Indexed: 03/01/2023]
Abstract
Zein, a corn-derived protein, has a variety of applications ranging from drug delivery to tissue engineering and wound healing. This work aims to develop a biocompatible scaffold for dermal applications based on thermally annealed electrospun propolis-loaded zein nanofibers. Pristine fibers' biocompatibility is determined in vitro. Next, propolis from Melipona quadrifasciata is added to the fibers at different concentrations (5% to 25%), and the scaffolds are studied. The physicochemical properties of zein/propolis precursor dispersions are evaluated and the results are correlated to the fibers' properties. Due to zein's and propolis' very favorable interactions, which are responsible for the increase in the dispersions surface tension, nanometric size ribbon-like fibers ranging from 420 to 575 nm are obtained. The fiber's hydrophobicity is not dependent on propolis concentration and increases with the annealing procedure. Propolis inhibitory concentration (IC50 ) is determined as 61.78 µg mL-1 . When loaded into fibers, propolis is gradually delivered to cells as Balb/3T3 fibroblasts and are able to adhere, grow, and interact with pristine and propolis-loaded fibers, and cytotoxicity is not observed. Therefore, the zein-propolis nanofibers are considered biocompatible and safe. The results are promising and provide prospects for the development of wound-healing nanofiber patches-one of propolis' main applications.
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Affiliation(s)
- Sabrina Hochheim
- Macromolecules and Interfaces Research Group, Department of Chemistry, Universidade Federal do Parana, Av Cel Francisco H dos Santos, s/n, Curitiba, PR, 81530, Brazil
| | - Naiara M F M Sampaio
- Macromolecules and Interfaces Research Group, Department of Chemistry, Universidade Federal do Parana, Av Cel Francisco H dos Santos, s/n, Curitiba, PR, 81530, Brazil
| | - Anderson Fraga da Cruz
- Laboratory of Inflammatory and Neoplastic Cells, Department of Cell Biology, Section of Biological Sciences, Universidade Federal do Parana, Curitiba, 81530, Brazil
| | - Loretta L Del Mercato
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), c/o Campus Ecotekne, via Monteroni, Lecce, 73100, Italy
| | - Eliana D'Amone
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), c/o Campus Ecotekne, via Monteroni, Lecce, 73100, Italy
| | - Bruno José Gonçalves da Silva
- Macromolecules and Interfaces Research Group, Department of Chemistry, Universidade Federal do Parana, Av Cel Francisco H dos Santos, s/n, Curitiba, PR, 81530, Brazil
| | - Cyro Ketzer Saul
- Department of Physics, Universidade Federal do Parana, Curitiba, 81530, Brazil
| | - Carolina Camargo de Oliveira
- Laboratory of Inflammatory and Neoplastic Cells, Department of Cell Biology, Section of Biological Sciences, Universidade Federal do Parana, Curitiba, 81530, Brazil
| | - Izabel Riegel-Vidotti
- Macromolecules and Interfaces Research Group, Department of Chemistry, Universidade Federal do Parana, Av Cel Francisco H dos Santos, s/n, Curitiba, PR, 81530, Brazil
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Gonçalves MM, Lobsinger KL, Carneiro J, Picheth GF, Pires C, Saul CK, Maluf DF, Pontarolo R. Morphological study of electrospun chitosan/poly(vinyl alcohol)/glycerol nanofibres for skin care applications. Int J Biol Macromol 2022; 194:172-178. [PMID: 34863828 DOI: 10.1016/j.ijbiomac.2021.11.195] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 09/11/2021] [Revised: 11/15/2021] [Accepted: 11/27/2021] [Indexed: 12/17/2022]
Abstract
This study aimed to evaluate the influence of formulation and procedure parameters in obtaining thick and continuous chitosan/PVA/glycerol nanofibres to be applied in skin care. For that, the polymers were characterized by nuclear magnetic resonance, Fourier-transform infrared spectroscopy, and size-exclusion chromatography. After this, 96 chitosan/PVA/glycerol nanofibre scaffolds were prepared by electrospinning method, using factorial designs. The independent variables were crude and pure chitosan, 2 brands of PVA, 2 needle gauges, high and low polymer concentration, high and low glycerol concentration, and final solution with and without ultrafiltration. Morphological analysis was performed by scanning electron microscopy, atomic force microscopy, and confocal microscopy. The best sample (NF67) presented an average thickness of 268.3 nm, uniform distribution, and high yield. It was obtained at a 1:3.5 (crude chitosan: PVA with lower molecular weight, but more hydrolysed) ratio and lower glycerol concentration, suggesting that the degree of hydrolysis of the PVA is more important than its molecular weight for obtaining better quality nanofibres and that the glycerol also makes the electrospinning process difficult. Thus, it was possible to choose parameters that provide scaffolds that could be applied as a matrix extracellular-like material in wound healing.
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Neves DA, Ratuznei TM, Serafim BM, Mattoso N, Saul CK. ZnO nanoparticle fabrication starting from ultra-high (1:2) PVOH/ZnAc proportion electrospun nanowire mats. Braz J Chem Eng 2018. [DOI: 10.1590/0104-6632.20180351s20160369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Guimarães JL, Trindade Cursino AC, Ketzer Saul C, Sierrakowski MR, Ramos LP, Satyanarayana KG. Evaluation of Castor Oil Cake Starch and Recovered Glycerol and Development of "Green" Composites Based on Those with Plant Fibers. Materials (Basel) 2016; 9:ma9020076. [PMID: 28787878 PMCID: PMC5456479 DOI: 10.3390/ma9020076] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 01/13/2016] [Indexed: 12/01/2022]
Abstract
Continuous efforts are being made in some countries for the recovery of crude glycerin (RG/CG) and castor oil cake (COC), the two byproducts of biodiesel production. These are expected to help, not only in addressing environmental safety, but also in adding value to those byproducts, which otherwise may go to waste. Finding ways to utilize those byproducts underlines the main objective of this study. This paper presents the evaluation of (i) COC, glycerin and banana and sugarcane fibers for moisture content; (ii) COC for structural and thermal properties; and (iii) CG for its chemical characteristics. The possibility of using COC and CG with the selected fibers as reinforcement in the development of bio-composites is attempted through thermo-molding. Results revealed enhanced mechanical properties for these composites. The obtained results are discussed in terms of the observed morphology.
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Affiliation(s)
- José Luis Guimarães
- Setor de Educação Profissional e Tecnológica; Universidade Federal do Paraná-UFPR, Centro Politécnico, Rua Alcides Vieira Arcoverde, 1225, Jardim das Américas, Curitiba 81520-260, Brazil.
| | - Ana Cristina Trindade Cursino
- Departamento de Química, Universidade Federal do Paraná-UFPR, Centro Politécnico, P. B. No.19081, Jardim das Américas, Curitiba 81531-980, Brazil.
| | - Cyro Ketzer Saul
- Departamento de Física, Universidade Federal do Paraná-UFPR, Centro Politécnico, P. B. No.19044, Jardim das Américas, Curitiba 81531-980, Brazil.
| | - Maria Rita Sierrakowski
- Departamento de Química, Universidade Federal do Paraná-UFPR, Centro Politécnico, P. B. No.19081, Jardim das Américas, Curitiba 81531-980, Brazil.
| | - Luiz Pereira Ramos
- Departamento de Química, Universidade Federal do Paraná-UFPR, Centro Politécnico, P. B. No.19081, Jardim das Américas, Curitiba 81531-980, Brazil.
| | - Kestur Gundappa Satyanarayana
- Departamento de Química, Universidade Federal do Paraná-UFPR, Centro Politécnico, P. B. No.19081, Jardim das Américas, Curitiba 81531-980, Brazil.
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Lubambo AF, Ono L, Drago V, Mattoso N, Varalda J, Sierakowski MR, Sakakibara CN, Freitas RA, Saul CK. Tuning Fe3O4 nanoparticle dispersion through pH in PVA/guar gum/electrospun membranes. Carbohydr Polym 2015; 134:775-83. [PMID: 26428185 DOI: 10.1016/j.carbpol.2015.08.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [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: 05/28/2015] [Revised: 08/07/2015] [Accepted: 08/10/2015] [Indexed: 10/23/2022]
Abstract
Polyvinyl Alcohol (PVA)/guar gum (GG) membranes with different loads of paramagnetic iron oxide Fe3O4 nanoparticles were successfully electrospun using both non-alkaline and alkaline stock solutions. The nanoparticle homogeneity distribution was clearly enhanced in fibers obtained from alkaline stock solutions. This is mainly due to the interaction between GG and the metallic ion, which also leads to further dispersion of remained uncoated nanoparticles in the mixture. It was also noticed that GG favors nanoparticle stability in the mixture and contributes to nanoparticle encapsulation. X-ray results showed that all membranes were semi-crystalline. FTIR-ATR spectra showed that Fe-O absorption band intensity improved with increasing nanoparticle load, reaching saturation at 3.5mg/ml Fe3O4 concentration under alkaline conditions. VSM analyses showed that the nanoparticles are paramagnetic and were successfully incorporated by the fibers. In vitro biocompatibility tests using L929 cells indicates adequate levels of cytotoxicity and cell adhesion/proliferation assays for both membranes obtained from non-alkaline and alkaline stock solutions. Therefore, they have potential for biomedical applications as biodegradable wound dressing.
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Affiliation(s)
- A F Lubambo
- Department of Physics, Universidade Federal do Paraná-UFPR, Centro Politécnico, P.O Box 19044, Curitiba, Paraná, Brasil.
| | - L Ono
- Department of Pathology, Universidade Federal do Paraná-UFPR, Centro Politécnico, P.O Box 19031, Curitiba, Paraná, Brasil
| | - V Drago
- Department of Physics, Universidade Federal de Santa Catarina-UFSC, Campus universitário Reitor João Davi Ferreira Lima, Florianópolis, Santa Catarina, Brasil
| | - N Mattoso
- Department of Physics, Universidade Federal do Paraná-UFPR, Centro Politécnico, P.O Box 19044, Curitiba, Paraná, Brasil
| | - J Varalda
- Department of Physics, Universidade Federal do Paraná-UFPR, Centro Politécnico, P.O Box 19044, Curitiba, Paraná, Brasil
| | - M-R Sierakowski
- Department of Chemistry, Universidade Federal do Paraná-UFPR, Centro Politécnico, P. O. Box 1908, Curitba, Paraná, Brasil
| | - C N Sakakibara
- Department of Chemistry, Universidade Federal do Paraná-UFPR, Centro Politécnico, P. O. Box 1908, Curitba, Paraná, Brasil
| | - R A Freitas
- Department of Chemistry, Universidade Federal do Paraná-UFPR, Centro Politécnico, P. O. Box 1908, Curitba, Paraná, Brasil
| | - C K Saul
- Department of Physics, Universidade Federal do Paraná-UFPR, Centro Politécnico, P.O Box 19044, Curitiba, Paraná, Brasil
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Foti L, Sionek A, Stori EM, Soares PP, Pereira MM, Krieger MA, Petzhold CL, Schreiner WH, Soares MJ, Goldenberg S, Saul CK. Electrospray induced surface activation of polystyrene microbeads for diagnostic applications. J Mater Chem B 2015; 3:2725-2731. [DOI: 10.1039/c4tb01884b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Proposed electrochemical reaction mechanism: (a) highly charged microbeads approach the electrolyte; (b) microbeads sink and are solvated by water molecules; (c) water oxidation reaction disrupts PS surface bonds; (d) oxygen is incorporated into the polymer chains.
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Affiliation(s)
- Leonardo Foti
- Instituto de Biologia Molecular do Paraná
- 81350-010 – Curitiba
- Brazil
| | - Andre Sionek
- Departamento de Física – UFPR
- 81531-990 – Curitiba
- Brazil
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Lubambo AF, de Freitas RA, Sierakowski MR, Lucyszyn N, Sassaki GL, Serafim BM, Saul CK. Electrospinning of commercial guar-gum: Effects of purification and filtration. Carbohydr Polym 2013; 93:484-91. [DOI: 10.1016/j.carbpol.2013.01.031] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 12/11/2012] [Accepted: 01/13/2013] [Indexed: 10/27/2022]
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de Souza PEN, Cusatis C, Saul CK, Rodrigues ARD, de Camargo PC. Thick-mode resonance of a PZT/Si wafer stack investigated by X-ray diffraction in Bragg geometry. J Appl Crystallogr 2003. [DOI: 10.1107/s0021889803012998] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
X-ray diffraction in Bragg geometry was used to investigate the effects of standing longitudinal acoustic waves on an Si(111) wafer. A PZT/Si(111) stack with a resonant frequency of 2.34 MHz was constructed. In addition to the ultrasonic vibration, a thermal effect is evident. The thermal contribution causes an angular displacement of the Bragg profile and was mapped without time resolution. The actual ultrasonic oscillation of the surface was measured using a stroboscopic system. Bulging of the Si(111) surface was mapped out and the maximum deformation near the centre of the Si wafer was determined for a given ultrasonic power. Simple modelling using finite differences was helpful in determining the acoustic and thermal contributions.
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