1
|
Torres-Rodriguez J, E. Bedolla D, D’Amico F, Koopmann AK, Vaccari L, Saccomano G, Kohns R, Huesing N. Polyvinylidene Fluoride Aerogels with Tailorable Crystalline Phase Composition. Gels 2022; 8:gels8110727. [PMID: 36354635 PMCID: PMC9689208 DOI: 10.3390/gels8110727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/02/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
In this work, polyvinylidene fluoride (PVDF) aerogels with a tailorable phase composition were prepared by following the crystallization-induced gelation principle. A series of PVDF wet gels (5 to 12 wt.%) were prepared from either PVDF−DMF solutions or a mixture of DMF and ethanol as non-solvent. The effects of the non-solvent concentration on the crystalline composition of the PVDF aerogels were thoroughly investigated. It was found that the nucleating role of ethanol can be adjusted to produce low-density PVDF aerogels, whereas the changes in composition by the addition of small amounts of water to the solution promote the stabilization of the valuable β and γ phases. These phases of the aerogels were monitored by FTIR and Raman spectroscopies. Furthermore, the crystallization process was followed by in-time and in situ ATR−FTIR spectroscopy. The obtained aerogels displayed specific surface areas > 150 m2 g−1, with variable particle morphologies that are dependent on the non-solvent composition, as observed by using SEM and Synchrotron Radiation Computed micro-Tomography (SR-μCT).
Collapse
Affiliation(s)
- Jorge Torres-Rodriguez
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
| | - Diana E. Bedolla
- Elettra-Sincrotrone Trieste, SS14 Km 163.5, 34149 Trieste, Italy
- Area Science Park, Padriciano 99, 34149 Trieste, Italy
| | | | - Ann-Kathrin Koopmann
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
| | - Lisa Vaccari
- Elettra-Sincrotrone Trieste, SS14 Km 163.5, 34149 Trieste, Italy
| | - Giulia Saccomano
- Elettra-Sincrotrone Trieste, SS14 Km 163.5, 34149 Trieste, Italy
- Department of Engineering and Architecture, University of Trieste, Via Alfonso Valerio 6/1, 34127 Trieste, Italy
| | - Richard Kohns
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
| | - Nicola Huesing
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Correspondence:
| |
Collapse
|
2
|
Synaridou MS, Monou PK, Zacharis CK, Fatouros DG, Panderi I, Markopoulou CK. Amoxicillin chewable tablets intended for pediatric use: formulation development, stability evaluation and taste assessment. Pharm Dev Technol 2021; 26:978-988. [PMID: 34387136 DOI: 10.1080/10837450.2021.1968431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
To cover the unpleasant taste of amoxicillin (250 mg), maize starch (baby food) and milk chocolate were co-formulated. The raw materials and the final formulations were characterized by means of Dynamic Light Scattering (DLS), Differential Scanning Calorimetry (DSC) and Fourier-Transform Infrared (FT-IR) spectroscopy. To evaluate the taste masking two different groups of volunteers were used, according to the Ethical Research Committee of the Aristotle University of Thessaloniki. The optimization of excipients' content in the tablet was determined by experimental design methodology (crossed D-optimal). Due to the matrix complexity, amoxicillin was extracted using liquid extraction and analyzed isocratically by HPLC. The developed chromatographic method was validated (%Recovery 98.7-101.3, %RSD = 1.3, LOD and LOQ 0.15 and 0.45 μg mL-1 respectively) according to the International Conference on Harmonization (ICH) guidelines. The physicochemical properties of the tablets were also examined demonstrating satisfactory quality characteristics (diameter: 15 mm, thickness: 6 mm, hardness <98 Newton, loss of mass <1.0%, disintegration time ∼25min). Additionally, dissolution (%Recovery >90) and in vitro digestion tests (%Recovery >95) were carried out. Stability experiments indicated that amoxicillin is stable in the prepared formulations for at least one year (%Recovery <91).
Collapse
Affiliation(s)
- Maria S Synaridou
- Laboratory of Pharmaceutical Analysis, Department of Pharmaceutical Technology, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Paraskevi Kyriaki Monou
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Constantinos K Zacharis
- Laboratory of Pharmaceutical Analysis, Department of Pharmaceutical Technology, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Dimitrios G Fatouros
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Irene Panderi
- Faculty of Pharmacy, Laboratory of Pharmaceutical Analysis, Panepistimiopolis, National and Kapodistrian University of Athens, Athens, Greece
| | - Catherine K Markopoulou
- Laboratory of Pharmaceutical Analysis, Department of Pharmaceutical Technology, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| |
Collapse
|
3
|
Kazek-Kęsik A, Nosol A, Płonka J, Śmiga-Matuszowicz M, Gołda-Cępa M, Krok-Borkowicz M, Brzychczy-Włoch M, Pamuła E, Simka W. PLGA-amoxicillin-loaded layer formed on anodized Ti alloy as a hybrid material for dental implant applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:998-1008. [PMID: 30423788 DOI: 10.1016/j.msec.2018.10.049] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 09/14/2018] [Accepted: 10/11/2018] [Indexed: 12/26/2022]
Abstract
In this paper, the preparation of a functional hybrid coating loaded with a drug (amoxicillin) on a promising titanium alloy - Ti-15Mo alloy is presented. The titanium alloy surface was anodized in solution with bioactive compounds to obtain a porous oxide layer favorable for MG-63 osteoblast-like cell adhesion. Then, a poly(lactide-co-glycolide) (PLGA) loaded with amoxicillin layer was formed using a dip-coating technique to cover the oxide layer, without filling in all of the pores. The morphology of the surface was evaluated using scanning electron microscopy supported by 3D Roughness Reconstruction software. The surface treatment of the Ti-15Mo alloy surface caused the surface roughness to increase up to 1.71 μm. The anodization process caused the Ti-15Mo alloy surface to become slightly more hydrophilic; however, the formation of the PLGA layer loaded with drug increased the contact angle to 96.5° ± 2.2°, respectively. After 4 weeks of polymer layer degradation, the registered signals on the 1H NMR spectrum were identical to the signals registered for lactic acid (LAc), which confirms that the polymer layer was degraded within a short period of time. The concentration of drug released into the artificial saliva was investigated using high-performance liquid chromatography (HPLC) up to 12 h of coatings immersion. During the first hour of coating degradation in artificial saliva, and the concentration of the drug (13 μg/ml) was enough to inhibit bacterial growth of S. aureus and S. epidermidis. These results were confirmed by agar plate diffusion method and evaluation of the minimal inhibitory concentration (MIC). The cytocompatibility of the materials was determined using the osteoblast-like cells MG-63, and the viability and cell morphology (live/dead staining) were also evaluated. The results showed that amoxicillin influences the osteoblast-like MG-63 cells' behavior during cell culture, especially for the first few hours. The influence on the type of surface treatment on MG-63 cell behavior during 7 days of culture is discussed in this paper. To the best of our knowledge, this is the first time that a fast-degrading layer with amoxicillin has been deposited on previously anodized Ti surface. The formation of functional coating may find application as a cytocompatible coating to prevent bacterial adhesion on long-term implant surfaces.
Collapse
Affiliation(s)
- Alicja Kazek-Kęsik
- Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Street 6, 44-100 Gliwice, Poland.
| | - Agnieszka Nosol
- Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Street 6, 44-100 Gliwice, Poland
| | - Joanna Płonka
- Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Street 6, 44-100 Gliwice, Poland
| | - Monika Śmiga-Matuszowicz
- Faculty of Chemistry, Silesian University of Technology, M. Strzody 9 Street, 44-100 Gliwice, Poland
| | - Monika Gołda-Cępa
- Faculty of Chemistry, Jagiellonian University, Gronostajowa Street 2, 30-387 Krakow, Poland
| | - Małgorzata Krok-Borkowicz
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza Av. 30, 30-059 Krakow, Poland
| | - Monika Brzychczy-Włoch
- Department of Microbiology, Jagiellonian University Medical College, Czysta 18 Street, 31-121 Krakow, Poland
| | - Elżbieta Pamuła
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza Av. 30, 30-059 Krakow, Poland
| | - Wojciech Simka
- Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Street 6, 44-100 Gliwice, Poland
| |
Collapse
|
4
|
Baldino L, Cardea S, Reverchon E. Production of antimicrobial membranes loaded with potassium sorbate using a supercritical phase separation process. INNOV FOOD SCI EMERG 2016. [DOI: 10.1016/j.ifset.2016.01.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
5
|
Baldino L, Sarno M, Cardea S, Irusta S, Ciambelli P, Santamaria J, Reverchon E. Formation of Cellulose Acetate–Graphene Oxide Nanocomposites by Supercritical CO2 Assisted Phase Inversion. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b01452] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lucia Baldino
- Department
of Industrial Engineering, University of Salerno, Via Giovanni
Paolo II, 132, 84084 Fisciano (SA), Italy
| | - Maria Sarno
- Department
of Industrial Engineering, University of Salerno, Via Giovanni
Paolo II, 132, 84084 Fisciano (SA), Italy
- NANO_MATES,
Research Centre for Nanomaterials and Nanotechnology, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy
| | - Stefano Cardea
- Department
of Industrial Engineering, University of Salerno, Via Giovanni
Paolo II, 132, 84084 Fisciano (SA), Italy
| | - Silvia Irusta
- Nanoscience Institute of Aragon (INA) and Networking Biomedical Research Center of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 50018 Zaragoza, Spain
| | - Paolo Ciambelli
- Department
of Industrial Engineering, University of Salerno, Via Giovanni
Paolo II, 132, 84084 Fisciano (SA), Italy
- NANO_MATES,
Research Centre for Nanomaterials and Nanotechnology, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy
| | - Jesus Santamaria
- Nanoscience Institute of Aragon (INA) and Networking Biomedical Research Center of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 50018 Zaragoza, Spain
| | - Ernesto Reverchon
- Department
of Industrial Engineering, University of Salerno, Via Giovanni
Paolo II, 132, 84084 Fisciano (SA), Italy
- NANO_MATES,
Research Centre for Nanomaterials and Nanotechnology, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy
| |
Collapse
|
6
|
Campardelli R, Baldino L, Reverchon E. Supercritical fluids applications in nanomedicine. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2015.01.030] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
7
|
Gugliuzza A, Cardea S, Drioli E, Reverchon E. Supercritical CO2–EtOH expanded liquid processing to produce tailored PEEK-WC membranes. RSC Adv 2014. [DOI: 10.1039/c4ra11021h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
8
|
|
9
|
Della Porta G, Del Gaudio P, De Cicco F, Aquino RP, Reverchon E. Supercritical Drying of Alginate Beads for the Development of Aerogel Biomaterials: Optimization of Process Parameters and Exchange Solvents. Ind Eng Chem Res 2013. [DOI: 10.1021/ie401335c] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giovanna Della Porta
- Department of Industrial Engineering, University of Salerno, via Ponte don Melillo, 84084 Fisciano (SA),
Italy
| | - Pasquale Del Gaudio
- Department of Pharmaceutical
and Biomedical Sciences, University of Salerno, via Ponte don Melillo, 84084 Fisciano (SA), Italy
| | - Felicetta De Cicco
- Department of Pharmaceutical
and Biomedical Sciences, University of Salerno, via Ponte don Melillo, 84084 Fisciano (SA), Italy
| | - Rita P. Aquino
- Department of Pharmaceutical
and Biomedical Sciences, University of Salerno, via Ponte don Melillo, 84084 Fisciano (SA), Italy
| | - Ernesto Reverchon
- Department of Industrial Engineering, University of Salerno, via Ponte don Melillo, 84084 Fisciano (SA),
Italy
| |
Collapse
|
10
|
Domingo C, Saurina J. An overview of the analytical characterization of nanostructured drug delivery systems: towards green and sustainable pharmaceuticals: a review. Anal Chim Acta 2012; 744:8-22. [PMID: 22935368 DOI: 10.1016/j.aca.2012.07.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 07/06/2012] [Accepted: 07/09/2012] [Indexed: 10/28/2022]
Abstract
The analytical characterization of drug delivery systems prepared by means of green manufacturing technologies using CO(2) as a processing fluid is here reviewed. The assessment of the performance of nanopharmaceuticals designed for controlled drug release may result in a complex analytical issue and multidisciplinary studies focused on the evaluation of physicochemical, morphological and textural properties of the products may be required. The determination of the drug content as well as the detection of impurities and solvent residues are often carried out by chromatography. Assays on solid state samples relying on X-ray, vibrational and nuclear magnetic resonance spectroscopies are of great interests to study the composition and structure of pharmaceutical forms. The morphology and size of particles are commonly checked by microscopy and complementary chemical information can be extracted in combination with spectroscopic accessories. Regarding the thermal behavior, calorimetric and thermogravimetric techniques are applied to assess the thermal transitions and stability of the samples. The evaluation of drug release profiles from the nanopharmaceuticals can be based on various experimental set-ups depending on the administration route to be considered. Kinetic curves showing the evolution of the drug concentration as a function of time in various physiological conditions (e.g., gastric, plasmatic or topical) are recorded commonly by UV-vis spectroscopy and/or chromatography. Representative examples are commented in detail to illustrate the characterization strategies.
Collapse
Affiliation(s)
- Concepción Domingo
- Instituto de Ciencia de Materiales de Barcelona (CSIC), Campus de la UAB s/n, 08193 Bellaterra, Spain
| | | |
Collapse
|