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Krysiak ZJ, Stachewicz U. Electrospun fibers as carriers for topical drug delivery and release in skin bandages and patches for atopic dermatitis treatment. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2023; 15:e1829. [PMID: 35817463 DOI: 10.1002/wnan.1829] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/27/2022] [Accepted: 05/31/2022] [Indexed: 01/31/2023]
Abstract
The skin is a complex layer system and the most important barrier between the environment and the organism. In this review, we describe some widespread skin problems, with a focus on eczema, which are affecting more and more people all over the world. Most of treatment methods for atopic dermatitis (AD) are focused on increasing skin moisture and protecting from bacterial infection and external irritation. Topical and transdermal treatments have specific requirements for drug delivery. Breathability, flexibility, good mechanical properties, biocompatibility, and efficacy are important for the patches used for skin. Up to today, electrospun fibers are mostly used for wound dressing. Their properties, however, meet the requirements for skin patches for the treatment of AD. Active agents can be incorporated into fibers by blending, coaxial or side-by-side electrospinning, and also by physical absorption post-processing. Drug release from the electrospun membranes is affected by drug and polymer properties and the technique used to combine them into the patch. We describe in detail the in vitro release mechanisms, parameters affecting the drug transport, and their kinetics, including theoretical approaches. In addition, we present the current research on skin patch design. This review summarizes the current extensive know-how on electrospun fibers as skin drug delivery systems, while underlining the advantages in their prospective use as patches for atopic dermatitis. This article is categorized under: Implantable Materials and Surgical Technologies > Nanomaterials and Implants Implantable Materials and Surgical Technologies > Nanotechnology in Tissue Repair and Replacement Therapeutic Approaches and Drug Discovery > Emerging Technologies.
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Affiliation(s)
- Zuzanna J Krysiak
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Krakow, Poland
| | - Urszula Stachewicz
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Krakow, Poland
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Thermal Stability and Kinetics of Thermal Decomposition of Statistical Copolymers of N-Vinylpyrrolidone and Alkyl Methacrylates Synthesized via RAFT Polymerization. J CHEM-NY 2021. [DOI: 10.1155/2021/6633052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The thermal stability and the kinetics of thermal decomposition of statistical copolymers of N-vinylpyrrolidone (NVP) with the alkyl methacrylates, hexyl methacrylate (HMA) and stearyl methacrylate (SMA), were studied by Thermogravimetric Analysis (TGA) and Differential Thermogravimetry (DTG). Statistical copolymers of different compositions were studied, and their thermal decomposition behavior was compared to the corresponding homopolymers. The activation energies of the thermal decomposition were calculated using the Ozawa-Flynn-Wall, the Kissinger, and the Kissinger-Akahira-Sunose methodologies. The effects of the nature of the methacrylate monomer, the copolymer composition, and the rate of heating are discussed.
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Kokkorogianni O, Kontoes-Georgoudakis P, Athanasopoulou M, Polizos N, Pitsikalis M. Statistical Copolymers of N-Vinylpyrrolidone and Isobornyl Methacrylate via Free Radical and RAFT Polymerization: Monomer Reactivity Ratios, Thermal Properties, and Kinetics of Thermal Decomposition. Polymers (Basel) 2021; 13:778. [PMID: 33802615 PMCID: PMC7961878 DOI: 10.3390/polym13050778] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 02/25/2021] [Accepted: 02/26/2021] [Indexed: 11/17/2022] Open
Abstract
The synthesis of statistical copolymers of N-vinylpyrrolidone (NVP) with isobornyl methacrylate (IBMA) was conducted by free radical and reversible addition-fragmentation chain transfer (RAFT) polymerization. The reactivity ratios were estimated using the Finemann-Ross, inverted Fineman-Ross, Kelen-Tüdos, extended Kelen-Tüdos and Barson-Fenn graphical methods, along with the computer program COPOINT, modified to both the terminal and the penultimate models. According to COPOINT the reactivity ratios were found to be equal to 0.292 for NVP and 2.673 for IBMA for conventional radical polymerization, whereas for RAFT polymerization and for the penultimate model the following reactivity ratios were obtained: r11 = 4.466, r22 = 0, r21 = 14.830, and r12 = 0 (1 stands for NVP and 2 for IBMA). In all cases, the NVP reactivity ratio was significantly lower than that of IBMA. Structural parameters of the copolymers were obtained by calculating the dyad sequence fractions and the mean sequence length. The thermal properties of the copolymers were studied by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and differential thermogravimetry (DTG). The results were compared with those of the respective homopolymers.
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Affiliation(s)
| | | | | | | | - Marinos Pitsikalis
- Industrial Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (O.K.); (P.K.-G.); (M.A.); (N.P.)
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Mitsoni E, Roka N, Pitsikalis M. Statistical copolymerization of N-vinyl-pyrrolidone and alkyl methacrylates via RAFT: reactivity ratios and thermal analysis. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1776-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Huang L, Cao K, Hu P, Liu Y. Orthogonal experimental preparation of Sanguis Draconis- Polyvinylpyrrolidone microfibers by electrospinning. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 30:308-321. [PMID: 30686124 DOI: 10.1080/09205063.2019.1570432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
How to improve the bioavailability of the Sanguis Draconis (SD) is an important problem in the potential clinical applications. The aim of this study was to develop a drug delivery system to achieve high bioavailability of SD, a drug with poor water solubility. It will promote the research about new formulations of the SD and the other insoluble drugs. In this study, a highly biocompatible hydrophilic polymer, polyvinylpyrrolidone (PVP), was selected as a carrier, mixed with different proportions of SD to produce SD-PVP microfibers by solution electrospinning. By orthogonal experiments, the optimal spinning conditions of the preparation of SD-PVP fibers were investigated. The morphology of different proportions of SD-PVP microfibers was observed by scanning electron microscopy, and the phase characteristics were characterized by Fourier transform infrared spectrometry, X-ray diffraction, and differential scanning calorimetry. The hydrophilic properties of SD-PVP fiber membranes with different SD content were analyzed by the water contact angle assay. In vitro dissolution experiments were carried out to observe the dissolution of drugs in SD-PVP fiber membranes. The results showed that the diameter of SD-PVP fibers increased with the enlargement of SD content. A eutectic mixture was formed after blending PVP and SD, and the hydrogen bonds were formed between the SD and PVP with no chemical reaction occurred. The dispersion of SD in the fiber decreased with the increase of SD content. The higher the content of SD in the fiber, the more hydrophobic the fiber membrane. In vitro dissolution studies revealed that the dissolution content of SD from SD-PVP microfibers was significantly higher than that of the pure or original drug SD. However, as the SD content increased from 15% to 30%, the dissolution of the drug in the SD-PVP fibers decreased. The SD-PVP fiber prepared in this study showed much higher solubility than the original drug in vitro, which has great significance for the development of new dosage forms for the clinical application of SD, and it has a useful reference for the study of similar bioavailability of poorly soluble drugs.
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Affiliation(s)
- Libing Huang
- a College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology , Beijing , China
| | - Kuan Cao
- a College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology , Beijing , China
| | - Ping Hu
- b Beijing Key Laboratory of Advanced Functional Polymer Composites , College of Materials Science and Engineering, Beijing University of Chemical Technology , Beijing , China
| | - Yong Liu
- b Beijing Key Laboratory of Advanced Functional Polymer Composites , College of Materials Science and Engineering, Beijing University of Chemical Technology , Beijing , China
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Tarus D, Hamard L, Caraguel F, Wion D, Szarpak-Jankowska A, van der Sanden B, Auzély-Velty R. Design of Hyaluronic Acid Hydrogels to Promote Neurite Outgrowth in Three Dimensions. ACS APPLIED MATERIALS & INTERFACES 2016; 8:25051-25059. [PMID: 27598554 DOI: 10.1021/acsami.6b06446] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A hyaluronic acid (HA)-based extracellular matrix (ECM) platform with independently tunable stiffness and density of cell-adhesive peptide (RGD, arginine-glycine-aspartic acid) that mimics key biochemical and mechanical features of brain matrix has been designed. We demonstrated here its utility in elucidating ECM regulation of neural progenitor cell behavior and neurite outgrowth. The analysis of neurite outgrowth in 3-D by two-photon microscopy showed several important results in the development of these hydrogels. First, the ability of neurites to extend deeply into these soft HA-based matrices even in the absence of cell-adhesive ligand further confirms the potential of HA hydrogels for central nervous system (CNS) regeneration. Second, the behavior of hippocampal neural progenitor cells differed markedly between the hydrogels with a storage modulus of 400 Pa and those with a modulus of 800 Pa. We observed an increased outgrowth and density of neurites in the softest hydrogels (G' = 400 Pa). Interestingly, cells seeded on the surface of the hydrogels functionalized with the RGD ligand experienced an optimum in neurite outgrowth as a function of ligand density. Surprinsingly, neurites preferentially progressed inside the gels in a vertical direction, suggesting that outgrowth is directed by the hydrogel structure. This work may provide design principles for the development of hydrogels to facilitate neuronal regeneration in the adult brain.
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Affiliation(s)
- Dominte Tarus
- Grenoble Alpes University , Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), 601, rue de la Chimie, BP 53, Grenoble 38041 Cedex 9, France
| | - Lauriane Hamard
- Platform Intravital Microscopy, France Life Imaging, Grenoble Alpes University , INSERM U1205, 17 rue des Martyrs, 38054 Grenoble, France
| | - Flavien Caraguel
- Platform Intravital Microscopy, France Life Imaging, Grenoble Alpes University , INSERM U1205, 17 rue des Martyrs, 38054 Grenoble, France
| | - Didier Wion
- Grenoble Alpes University , INSERM U1205, 17 rue des Martyrs, 38054 Grenoble, France
| | - Anna Szarpak-Jankowska
- Grenoble Alpes University , Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), 601, rue de la Chimie, BP 53, Grenoble 38041 Cedex 9, France
| | - Boudewijn van der Sanden
- Platform Intravital Microscopy, France Life Imaging, Grenoble Alpes University , INSERM U1205, 17 rue des Martyrs, 38054 Grenoble, France
| | - Rachel Auzély-Velty
- Grenoble Alpes University , Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), 601, rue de la Chimie, BP 53, Grenoble 38041 Cedex 9, France
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Liu L, Bai S, Yang H, Li S, Quan J, Zhu L, Nie H. Controlled release from thermo-sensitive PNVCL-co-MAA electrospun nanofibers: The effects of hydrophilicity/hydrophobicity of a drug. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 67:581-589. [PMID: 27287157 DOI: 10.1016/j.msec.2016.05.083] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 05/13/2016] [Accepted: 05/18/2016] [Indexed: 12/13/2022]
Abstract
The thermo-sensitive copolymer poly(N-vinylcaprolactam-co-methacrylic acid) (PNVCL-co-MAA) was synthesized by free radical polymerization and the resulting nanofibers were fabricated using an electrospinning process. The molecular weight of the copolymer was adjusted by varying the content of methacrylic acid (MAA) while keeping that of N-vinylcaprolactam (NVCL) constant. Hydrophilic captopril and hydrophobic ketoprofen were used as model drugs, and PNVCL-co-MAA nanofibers were used as the drug carrier to investigate the effects of drug on its release properties from nanofibers at different temperatures. The results showed that slow release over several hours was observed at 40°C (above the lower critical solution temperature (LCST) of PNVCL-co-MAA), while the drugs exhibited a burst release of several seconds at 20°C (below the LCST). Drug release slowed with increasing content of the hydrophobic monomer NVCL. The hydrophilic captopril was released at a higher rate than the hydrophobic ketoprofen. The drug release characteristics were dependent on the temperature, the portion of hydrophilic groups and hydrophobic groups in the copolymer and hydrophilicity/hydrophobicity of drug. Study on the mechanism of release showed that Korsmeyer-Peppas model as a major drug release mechanism. Given these results, the PNVCL-co-MAA copolymers are proposed to have useful applications in intellectual drug delivery systems.
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Affiliation(s)
- Lin Liu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
| | - Shaoqing Bai
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Huiqin Yang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Shubai Li
- Changzhou Institute of Engineering Technology, Changzhou 213164, China
| | - Jing Quan
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Limin Zhu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Huali Nie
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China.
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Huma F, Akhter Z, Yasin T, Zafar-uz-Zaman M, Manan A. Crosslinking of poly(N-vinyl pyrrolidone-co-n-butyl methacrylate) copolymers for controlled drug delivery. Polym Bull (Berl) 2013. [DOI: 10.1007/s00289-013-1069-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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