1
|
Carrazco Ávila PY, Arias Moliz T, Rosales Leal JI, Baca P, Rodríguez Valverde MÁ, Morales Hernandez ME. Novel Ti surface coated with PVA hydrogel and chitosan nanoparticles with antibacterial drug release: An experimental in vitro study. Clin Implant Dent Relat Res 2024; 26:427-441. [PMID: 38419213 DOI: 10.1111/cid.13305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 12/04/2023] [Accepted: 01/13/2024] [Indexed: 03/02/2024]
Abstract
OBJECTIVES The aims of this study were to design a novel titanium surface coated with a PVA hydrogel matrix and chitosan-based nanoparticles and to investigate the antibiotic release and its ability to inhibit microbial activity. METHODS Two drug delivery systems were developed and mixed. Chitosan-based nanoparticles (NP) and a polyvinyl alcohol film (PVA). The size, ζ-potential, stability, adhesive properties, and encapsulation profile of NP, as well as the release kinetics of drug delivery systems and their antimicrobial ability of PVA and PVANP films, were studied on Ti surfaces. The systems were loaded with doxycycline, vancomycin, and doxepin hydrochloride. RESULTS Nanoparticles presented a ζ-potential greater than 30 mV for 45 days and the efficiency drug encapsulation was 26.88% ± 1.51% for doxycycline, 16.09% ± 10.24% for vancomycin and 17.57% ± 11.08% for doxepin. In addition, PVA films were loaded with 125 μg/mL of doxycycline, 125 μg/mL of vancomycin, and 100 μg/mL of doxepin. PVANP-doxycycline achieved the antibacterial effect at 4 h while PVA-doxycycline maintained its effect at 24 h.
Collapse
Affiliation(s)
- Pablo Yael Carrazco Ávila
- Department of Stomatology, School of Dentistry, Campus de Cartuja s/n, University of Granada, Granada, Spain
| | - Teresa Arias Moliz
- Department of Microbiology, School of Dentistry, University of Granada, Granada, Spain
| | - Juan Ignacio Rosales Leal
- Department of Stomatology, School of Dentistry, Campus de Cartuja s/n, University of Granada, Granada, Spain
| | - Pilar Baca
- Department of Stomatology, School of Dentistry, Campus de Cartuja s/n, University of Granada, Granada, Spain
| | | | | |
Collapse
|
2
|
Lou CW, Hung CY, Wei M, Li T, Shiu BC, Lin JH. Antibacterial Surgical Sutures Developed Using Electrostatic Yarn Wrapping Technology. J Funct Biomater 2023; 14:jfb14050248. [PMID: 37233358 DOI: 10.3390/jfb14050248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/09/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023] Open
Abstract
A significant amount of research has been conducted on applying functional materials as surgical sutures. Therefore, research on how to solve the shortcomings of surgical sutures through available materials has been given increasing attention. In this study, hydroxypropyl cellulose (HPC)/PVP/zinc acetate nanofibers were coated on absorbable collagen sutures using an electrostatic yarn winding technique. The metal disk of an electrostatic yarn spinning machine gathers nanofibers between two needles with positive and negative charges. By adjusting the positive and negative voltage, the liquid in the spinneret is stretched into fibers. The selected materials are toxicity free and have high biocompatibility. Test results indicate that the nanofiber membrane comprises evenly formed nanofibers despite the presence of zinc acetate. In addition, zinc acetate can effectively kill 99.9% of E. coli and S. aureus. Cell assay results indicate that HPC/PVP/Zn nanofiber membranes are not toxic; moreover, they improve cell adhesion, suggesting that the absorbable collagen surgical suture is profoundly wrapped in a nanofiber membrane that exerts antibacterial efficacy and reduces inflammation, thus providing a suitable environment for cell growth. The employment of electrostatic yarn wrapping technology is proven effective in providing surgical sutures with antibacterial efficacy and a more flexible range of functions.
Collapse
Affiliation(s)
- Ching-Wen Lou
- Fujian Key Laboratory of Novel Functional Textile Fibers and Materials, Minjiang University, Fuzhou 350108, China
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Yunlin 638, Taiwan
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung City 413305, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung City 404333, Taiwan
| | - Chun-Yu Hung
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Yunlin 638, Taiwan
- Department of Orthopaedic Surgery, Jen-Ai Hospital, Taichung City 412, Taiwan
| | - Mengdan Wei
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Tingting Li
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
- Tianjin and Ministry of Education Key Laboratory for Advanced Textile Composite Materials, Tiangong University, Tianjin 300387, China
| | - Bing-Chiuan Shiu
- Fujian Key Laboratory of Novel Functional Textile Fibers and Materials, Minjiang University, Fuzhou 350108, China
- College of Material and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Jia-Horng Lin
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
- College of Material and Chemical Engineering, Minjiang University, Fuzhou 350108, China
- Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 407102, Taiwan
- School of Chinese Medicine, China Medical University, Taichung City 404333, Taiwan
| |
Collapse
|
3
|
Németh K, Kazsoki A, Visnovitz T, Pinke B, Mészáros L, Buzás EI, Zelkó R. Nanofiber formation as a promising technology for preservation and easy storage of extracellular vesicles. Sci Rep 2022; 12:22012. [PMID: 36539440 PMCID: PMC9768167 DOI: 10.1038/s41598-022-25916-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 12/07/2022] [Indexed: 12/24/2022] Open
Abstract
Extracellular vesicles (EVs) are cell-derived, membrane-enclosed particles with the potential for a wide range of future therapeutic applications. However, EVs have almost always been administered by direct injection, likely hindering their efficacy because of rapid clearance from the injection site. The present study aimed to incorporate medium-sized extracellular vesicles (mEVs) into fast-dissolving electrospun polyvinylpyrrolidone-based nanofibers to explore the storage-dependent structure-activity relationship of the resulting nanofibrous formulations. Aqueous polyvinylpyrrolidone-based precursor solutions were selected for the electrospinning process. The presence of EVs in the electrospun samples was confirmed by transmission electron microscopy, flow cytometry, and confocal laser scanning microscope. The results indicate that the fibrous structure of the samples was preserved until the end of the 12-week storage period. Furthermore, regardless of the storage temperature (4 °C or room temperature), nanofibers and nanofiber-associated EVs were present throughout the experimental period. Incorporating EVs into a stable solid polymeric delivery base could preserve their stability; meanwhile, according to the characteristics of the polymer, their targeted and controlled release can be achieved.
Collapse
Affiliation(s)
- Krisztina Németh
- grid.11804.3c0000 0001 0942 9821Department of Genetics Cell and Immunobiology, Semmelweis University, Nagyvárad Square 4, Budapest, 1089 Hungary ,ELKH-SE Translational Extracellular Vesicle Research Group, Budapest, Hungary
| | - Adrienn Kazsoki
- grid.11804.3c0000 0001 0942 9821University Pharmacy Department of Pharmacy Administration, Semmelweis University, Hőgyes Endre Street 7-9, Budapest, 1092 Hungary
| | - Tamás Visnovitz
- grid.11804.3c0000 0001 0942 9821Department of Genetics Cell and Immunobiology, Semmelweis University, Nagyvárad Square 4, Budapest, 1089 Hungary ,grid.5591.80000 0001 2294 6276Department of Plant Physiology and Molecular Plant Biology, Eötvös Loránd University, Pázmány Péter Sétány 1/C, Budapest, 1117 Hungary
| | - Balázs Pinke
- grid.6759.d0000 0001 2180 0451Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem Rkp. 3, Budapest, 1111 Hungary
| | - László Mészáros
- grid.6759.d0000 0001 2180 0451Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem Rkp. 3, Budapest, 1111 Hungary ,ELKH-BME Research Group for Composite Science and Technology, Műegyetem Rkp. 3, Budapest, 1111 Hungary
| | - Edit I. Buzás
- grid.11804.3c0000 0001 0942 9821Department of Genetics Cell and Immunobiology, Semmelweis University, Nagyvárad Square 4, Budapest, 1089 Hungary ,ELKH-SE Translational Extracellular Vesicle Research Group, Budapest, Hungary ,HCEMM-SU Extracellular Vesicle Research Group, Budapest, Hungary
| | - Romána Zelkó
- grid.11804.3c0000 0001 0942 9821University Pharmacy Department of Pharmacy Administration, Semmelweis University, Hőgyes Endre Street 7-9, Budapest, 1092 Hungary
| |
Collapse
|
4
|
Cellulose-Based Nanofibers Processing Techniques and Methods Based on Bottom-Up Approach-A Review. Polymers (Basel) 2022; 14:polym14020286. [PMID: 35054691 PMCID: PMC8781687 DOI: 10.3390/polym14020286] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/27/2021] [Accepted: 01/06/2022] [Indexed: 02/04/2023] Open
Abstract
In the past decades, cellulose (one of the most important natural polymers), in the form of nanofibers, has received special attention. The nanofibrous morphology may provide exceptional properties to materials due to the high aspect ratio and dimensions in the nanometer range of the nanofibers. The first feature may lead to important consequences in mechanical behavior if there exists a particular orientation of fibers. On the other hand, nano-sizes provide a high surface-to-volume ratio, which can have important consequences on many properties, such as the wettability. There are two basic approaches for cellulose nanofibers preparation. The top-down approach implies the isolation/extraction of cellulose nanofibrils (CNFs) and nanocrystals (CNCs) from a variety of natural resources, whereby dimensions of isolates are limited by the source of cellulose and extraction procedures. The bottom-up approach can be considered in this context as the production of nanofibers using various spinning techniques, resulting in nonwoven mats or filaments. During the spinning, depending on the method and processing conditions, good control of the resulting nanofibers dimensions and, consequently, the properties of the produced materials, is possible. Pulp, cotton, and already isolated CNFs/CNCs may be used as precursors for spinning, alongside cellulose derivatives, namely esters and ethers. This review focuses on various spinning techniques to produce submicrometric fibers comprised of cellulose and cellulose derivatives. The spinning of cellulose requires the preparation of spinning solutions; therefore, an overview of various solvents is presented showing their influence on spinnability and resulting properties of nanofibers. In addition, it is shown how bottom-up spinning techniques can be used for recycling cellulose waste into new materials with added value. The application of produced cellulose fibers in various fields is also highlighted, ranging from drug delivery systems, high-strength nonwovens and filaments, filtration membranes, to biomedical scaffolds.
Collapse
|
5
|
Saraiva S, Pereira P, Paula CT, Rebelo RC, Coelho JFJ, Serra AC, Fonseca AC. Development of electrospun mats based on hydrophobic hydroxypropyl cellulose derivatives. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 131:112498. [PMID: 34857284 DOI: 10.1016/j.msec.2021.112498] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 10/06/2021] [Accepted: 10/13/2021] [Indexed: 12/21/2022]
Abstract
In this work, hydroxypropyl cellulose esters (HPCE) with long aliphatic chains were prepared and innovatively used in electrospinning to obtain hydroxypropyl cellulose (HPC)-based mats with enhanced resistance to moist environments. The described approach is very simple and does not require any post-treatment (e.g. cross-linking step) to overcome a major problem concerning the premature loss of properties of cellulose-based materials when in contact with moisture. HPCE-based electrospun mats were characterized in terms of their morphology, swelling ability and in vitro hydrolytic degradation. The mats exhibited a swelling capacity of over 115%, depending on the degree of substitution. The in vitro hydrolytic degradation tests showed the high structural integrity of the mats (< 5% weight loss) over a period of 30 days. The in vitro cytotoxicity tests showed that the mats of HPC esters are cytocompatible and promote the adhesion, proliferation and spreading of NIH3T3 fibroblast cells. These data suggest that the HPCE mats may be interesting materials for wound dressings, as well as for other tissue engineering applications.
Collapse
Affiliation(s)
- Sofia Saraiva
- University of Coimbra, CEMMPRE, Department of Chemical Engineering, Rua Sílvio Lima- Pólo II, 3030-290 Coimbra, Portugal
| | - Patrícia Pereira
- University of Coimbra, CEMMPRE, Department of Chemical Engineering, Rua Sílvio Lima- Pólo II, 3030-290 Coimbra, Portugal; IPN, Instituto Pedro Nunes, Associação para a Inovação e Desenvolvimento em Ciência e Tecnologia, Rua Pedro Nunes, 3030-199 Coimbra, Portugal
| | - C T Paula
- University of Coimbra, CEMMPRE, Department of Chemical Engineering, Rua Sílvio Lima- Pólo II, 3030-290 Coimbra, Portugal
| | - R C Rebelo
- University of Coimbra, CEMMPRE, Department of Chemical Engineering, Rua Sílvio Lima- Pólo II, 3030-290 Coimbra, Portugal
| | - Jorge F J Coelho
- University of Coimbra, CEMMPRE, Department of Chemical Engineering, Rua Sílvio Lima- Pólo II, 3030-290 Coimbra, Portugal
| | - Arménio C Serra
- University of Coimbra, CEMMPRE, Department of Chemical Engineering, Rua Sílvio Lima- Pólo II, 3030-290 Coimbra, Portugal
| | - Ana C Fonseca
- University of Coimbra, CEMMPRE, Department of Chemical Engineering, Rua Sílvio Lima- Pólo II, 3030-290 Coimbra, Portugal.
| |
Collapse
|
6
|
Song Y, Cong Y, Wang B, Zhang N. Applications of Fourier transform infrared spectroscopy to pharmaceutical preparations. Expert Opin Drug Deliv 2020; 17:551-571. [PMID: 32116058 DOI: 10.1080/17425247.2020.1737671] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Introduction: Various pharmaceutical preparations are widely used for clinical treatment. Elucidation of the mechanisms of drug release and evaluation of drug efficacy in biological samples are important in drug design and drug quality control.Areas covered: This review classifies recent applications of Fourier transform infrared (FTIR) spectroscopy in the field of medicine to comprehend drug release and diffusion. Drug release is affected by many factors of preparations, such as drug delivery system and microstructure polymorphism. The applications of FTIR imaging and nano-FTIR technique in biological samples lay a foundation for studying drug mechanism in vivo.Expert opinion: FTIR spectroscopy meets the research needs on preparations to understand the processes and mechanisms underlying drug release. The combination of attenuated total reflectance-FTIR imaging and nano-FTIR accompanied by chemometrics is a potent tool to overcome the deficiency of conventional infrared detection. FTIR shows an enormous potential in drug characterization, drug quality control, and bio-sample detection.
Collapse
Affiliation(s)
- Yijie Song
- Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yuanhua Cong
- Center for Pharmaceutics Research, Shanghai Institute of Materia Medica Chinese Academy of Sciences, Shanghai, China
| | - Bing Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Center for Pharmaceutics Research, Shanghai Institute of Materia Medica Chinese Academy of Sciences, Shanghai, China
| | - Ning Zhang
- Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| |
Collapse
|
7
|
Jaworska J, Włodarczyk J, Karpeta-Jarząbek P, Janeczek H, Stojko M, Kasperczyk J. Electrospun, drug-enriched bioresorbable nonwovens based on poly(glycolide-ɛ-caprolactone) and poly(d,l-lactide-glycolide) for urological applications. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.06.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
8
|
Vass P, Démuth B, Farkas A, Hirsch E, Szabó E, Nagy B, Andersen SK, Vigh T, Verreck G, Csontos I, Marosi G, Nagy ZK. Continuous alternative to freeze drying: Manufacturing of cyclodextrin-based reconstitution powder from aqueous solution using scaled-up electrospinning. J Control Release 2019; 298:120-127. [PMID: 30779951 DOI: 10.1016/j.jconrel.2019.02.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 02/13/2019] [Accepted: 02/15/2019] [Indexed: 01/27/2023]
Abstract
The aims of this study were to evaluate electrospinning as a continuous alternative to freeze drying in the production of a reconstitution injection dosage form, and to prove that aqueous electrospinning can be realized with a high production rate at room temperature. High-speed electrospinning with a novel continuous cyclone collection was used to manufacture a formulation of the poorly water-soluble antifungal voriconazole (VOR) with sulfobutylether-β-cyclodextrin (SBE-β-CD). The freeze-dried, marketed product of this drug substance, Vfend® also contains SBE-β-CD as excipient. SBE-β-CD acted as a 'quasi-polymer', and it could be electrospun despite its low molecular mass (2163 Da). According to X-ray diffraction and differential scanning calorimetry, no traces of crystalline VOR were detectable in the fibers. Furthermore, Raman mapping and energy dispersive spectroscopy measurements showed a uniform distribution of amorphous VOR in the fibers. Reconstitution tests carried out with ground fibrous powder showed complete dissolution resulting in a clear solution after 30 s (similarly to Vfend®). The high productivity rate (~240 g/h) achieved using high-speed electrospinning makes this scaled-up, continuous and flexible manufacturing process capable of fulfilling the technological and capacity requirements of the pharmaceutical industry. This work shows that aqueous high-speed electrospinning, being a continuous and high-throughput process, is an economically viable production alternative to freeze drying.
Collapse
Affiliation(s)
- Panna Vass
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics (BME), Műegyetem rakpart 3, Budapest H-1111, Hungary
| | - Balázs Démuth
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics (BME), Műegyetem rakpart 3, Budapest H-1111, Hungary.
| | - Attila Farkas
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics (BME), Műegyetem rakpart 3, Budapest H-1111, Hungary
| | - Edit Hirsch
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics (BME), Műegyetem rakpart 3, Budapest H-1111, Hungary
| | - Edina Szabó
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics (BME), Műegyetem rakpart 3, Budapest H-1111, Hungary
| | - Brigitta Nagy
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics (BME), Műegyetem rakpart 3, Budapest H-1111, Hungary
| | - Sune K Andersen
- Oral Solids Development, Janssen R&D, Turnhoutseweg 30, Beerse B-2340, Belgium
| | - Tamás Vigh
- Oral Solids Development, Janssen R&D, Turnhoutseweg 30, Beerse B-2340, Belgium
| | - Geert Verreck
- Oral Solids Development, Janssen R&D, Turnhoutseweg 30, Beerse B-2340, Belgium
| | - István Csontos
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics (BME), Műegyetem rakpart 3, Budapest H-1111, Hungary
| | - György Marosi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics (BME), Műegyetem rakpart 3, Budapest H-1111, Hungary
| | - Zsombor K Nagy
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics (BME), Műegyetem rakpart 3, Budapest H-1111, Hungary
| |
Collapse
|
9
|
Kazsoki A, Domján A, Süvegh K, Zelkó R. Microstructural characterization of papaverine-loaded HPC/PVA gels, films and nanofibers. Eur J Pharm Sci 2018; 122:9-12. [DOI: 10.1016/j.ejps.2018.06.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 06/19/2018] [Accepted: 06/19/2018] [Indexed: 11/24/2022]
|
10
|
Darbasizadeh B, Motasadizadeh H, Foroughi-Nia B, Farhadnejad H. Tripolyphosphate-crosslinked chitosan/poly (ethylene oxide) electrospun nanofibrous mats as a floating gastro-retentive delivery system for ranitidine hydrochloride. J Pharm Biomed Anal 2018; 153:63-75. [DOI: 10.1016/j.jpba.2018.02.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/07/2018] [Accepted: 02/08/2018] [Indexed: 12/18/2022]
|
11
|
Kovács A, Démuth B, Meskó A, Zelkó R. Preformulation Studies of Furosemide-Loaded Electrospun Nanofibrous Systems for Buccal Administration. Polymers (Basel) 2017; 9:polym9120643. [PMID: 30965943 PMCID: PMC6418805 DOI: 10.3390/polym9120643] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 11/21/2017] [Accepted: 11/22/2017] [Indexed: 11/16/2022] Open
Abstract
Furosemide loaded electrospun fibers were prepared for buccal administration, with the aim of improving the oral bioavailability of the poorly soluble and permeable crystalline drug, which can be achieved by the increased solubility and by the circumvention of the intensive first pass metabolism. The water soluble hydroxypropyl cellulose (HPC) was chosen as a mucoadhesive polymer. In order to improve the electrospinnability of HPC, poly (vinylpyrrolidone) (PVP) was used. During the experiments, the total polymer concentration was kept constant at 15% (w/w), and only the ratio of the two polymers (HPC-PVP = 5:5, 6:4, 7:3, 8:2, 9:1) was changed. A combination of rheological measurements with scanning electron microscopic morphological images of electrospun samples was applied for the determination of the optimum composition of the gels for fiber formation. The crystalline–amorphous transition of furosemide was tracked by Fourier transform infrared spectroscopy. A correlation was found between the rheological properties of the polymer solutions and their electrospinnability, and the consequent morphology of the resultant samples. With decreasing HPC ratio of the system, a transition from the spray-dried droplets to the randomly oriented fibrous structures was observed. The results enable the determination of the polymer ratio for the formation of applicable quality of electrospun fibers.
Collapse
Affiliation(s)
- Andrea Kovács
- Gedeon Richter Plc., Formulation R&D, Gyömrői Street 19-21, H-1103 Budapest, Hungary.
- University Pharmacy Department of Pharmacy Administration, Semmelweis University, Hőgyes Endre Street 7-9, H-1092 Budapest, Hungary.
| | - Balázs Démuth
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8. 3, H-1103 Budapest, Hungary.
| | - Andrea Meskó
- University Pharmacy Department of Pharmacy Administration, Semmelweis University, Hőgyes Endre Street 7-9, H-1092 Budapest, Hungary.
| | - Romána Zelkó
- University Pharmacy Department of Pharmacy Administration, Semmelweis University, Hőgyes Endre Street 7-9, H-1092 Budapest, Hungary.
| |
Collapse
|
12
|
Kazsoki A, Szabó P, Süvegh K, Vörös T, Zelkó R. Macro- and microstructural tracking of ageing-related changes of papaverine hydrochloride-loaded electrospun nanofibrous buccal sheets. J Pharm Biomed Anal 2017; 143:62-67. [PMID: 28577418 DOI: 10.1016/j.jpba.2017.05.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 05/15/2017] [Accepted: 05/17/2017] [Indexed: 10/19/2022]
Abstract
Electrospun papaverine hydrochloride-loaded nanofibrous sheets consist of hydroxypropyl cellulose/poly(vinyl alcohol) composite were prepared for buccal administration for cerebral ischemia. The nanofibrous drug delivery system was subjected to accelerated stability test for four weeks in order to scrutinize the solid state changes relating to the stress induced (40±2°C/75±5% relative humidity) physical ageing. Micro- and macrostructural alterations were detected using scanning electron microscopy (SEM), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR) and positron annihilation lifetime spectroscopy (PALS). Significant changes were revealed at both supramolecular and macroscopic levels. Microscopic morphology uncovered major morphological transitions. Subtle variations of Raman and FTIR spectra indicated that the local chemical environment of papaverine was altered suggesting a partial phase transition of the active. Discrete o-Ps lifetimes and lifetime-distributions unveiled a two-step ageing process of the drug carrier. In addition to the tracking of the glassy-to-rubbery transition of the fiber forming polymers, the Raman spectroscopy enabled monitoring the kinetics of the phase transition observed.
Collapse
Affiliation(s)
- Adrienn Kazsoki
- University Pharmacy Department of Pharmacy Administration, Semmelweis University,Hőgyes Endre St. 7-9, H-1092 Budapest, Hungary
| | - Péter Szabó
- University Pharmacy Department of Pharmacy Administration, Semmelweis University,Hőgyes Endre St. 7-9, H-1092 Budapest, Hungary
| | - Károly Süvegh
- Laboratory of Nuclear Chemistry, Eötvös Loránd University/HAS Chemical Research Center, P.O. Box 32, H-1518 Budapest, Hungary
| | - Tamás Vörös
- Doctoral School of Chemistry, Eötvös Loránd University, Pázmány Péter Prom. 1/A, H-1117 Budapest, Hungary
| | - Romána Zelkó
- University Pharmacy Department of Pharmacy Administration, Semmelweis University,Hőgyes Endre St. 7-9, H-1092 Budapest, Hungary.
| |
Collapse
|