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Gürtler AL, Maltschik AM, M Güler Yildiz S, Vangelofski K, Gade L, Grohganz H, Rades T, Heinz A. Advancing inflammatory skin disease therapy: Sustained tofacitinib release via electrospun fiber dressings. Eur J Pharm Biopharm 2024; 202:114423. [PMID: 39038523 DOI: 10.1016/j.ejpb.2024.114423] [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: 06/19/2024] [Revised: 07/16/2024] [Accepted: 07/18/2024] [Indexed: 07/24/2024]
Abstract
Inflammatory skin diseases are typically managed with semi-solid formulations such as creams and ointments. These treatments often fail to remain on the skin for long, as they can be easily wiped off by clothing, necessitating frequent reapplication throughout the day and resulting in poor patient adherence. Therefore, this study sought to fabricate an electrospun dressing as an alternative dosage form that provides a sustained release of the anti-inflammatory agent tofacitinib over three days. In this study, three types of electrospun fiber dressings - uniaxial, coaxial, and layer-by-layer - were produced and examined for their morphological, mechanical, and release characteristics. In addition to a comprehensive characterization, another objective was to analyze the drug permeation behavior from these fiber dressings on porcine skin, comparing their performance to that of a tofacitinib cream. The layer-by-layer system notably exhibited a delayed drug release, while the uniaxial and coaxial systems demonstrated an initial burst release. However, the permeation studies revealed no significant differences between these systems, underscoring the necessity of conducting such studies - a crucial aspect often overlooked in research on electrospun fiber dressings. Overall, this study highlights the potential of electrospun, drug-loaded dressings for the treatment of inflammatory skin diseases.
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Affiliation(s)
- Anna-Lena Gürtler
- Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark
| | - Andreas M Maltschik
- Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark
| | - Sibel M Güler Yildiz
- Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark
| | - Katerina Vangelofski
- Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark
| | - Luna Gade
- Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark
| | - Holger Grohganz
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Thomas Rades
- Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark
| | - Andrea Heinz
- Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark.
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Gürtler AL, Rades T, Heinz A. Electrospun fibers for the treatment of skin diseases. J Control Release 2023; 363:621-640. [PMID: 37820983 DOI: 10.1016/j.jconrel.2023.10.009] [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: 07/21/2023] [Revised: 09/20/2023] [Accepted: 10/04/2023] [Indexed: 10/13/2023]
Abstract
Skin diseases are among the most common diseases in the global population and with the growth of the aging population, they represent an increasing burden to healthcare systems worldwide. Even though they are rarely life-threatening, the suffering for those affected is high due to the visibility and physical discomfort related to these diseases. Typical symptoms of skin diseases include an inflamed, swollen or itchy skin, and therefore, there is a high demand for effective therapy options. In recent years, electrospinning has attracted considerable interest in the field of drug delivery. The technique allows producing multifunctional drug-loaded fibrous patches from various natural and synthetic polymers with fiber diameters in the nano- and micrometer range, suitable for the treatment of a wide variety of skin diseases. The great potential of electrospun fiber patches not only lies in their tunable drug release properties and the possibility to entrap a variety of therapeutic compounds, but they also provide physical and mechanical protection to the impaired skin area, exhibit a high surface area, allow gas exchange, absorb exudate due to their porous structure and are cytocompatible and biodegradable. In the case of wound healing, cell adhesion is promoted due to the resemblance of the electrospun fibers to the structure of the native extracellular matrix. This review gives an overview of the potential applications of electrospun fibers in skin therapy. In addition to the treatment of bacterial, diabetic and burn wounds, focus is placed on inflammatory diseases such as atopic dermatitis and psoriasis, and therapeutic options for the treatment of skin cancer, acne vulgaris and herpes labialis are discussed. While we aim to emphasize the great potential of electrospun fiber patches for the treatment of skin diseases with this review paper, we also highlight challenges and limitations of current research in the field.
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Affiliation(s)
- Anna-Lena Gürtler
- Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark
| | - Thomas Rades
- Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark
| | - Andrea Heinz
- Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark.
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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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Hashemi S, Mortazavi SA, Moghimi HR, Darbasizadeh B. Development and Evaluation of a Novel Methotrexate-Loaded Electrospun Patch to Alleviate Psoriasis Plaques. Drug Dev Ind Pharm 2022; 48:355-366. [PMID: 36000909 DOI: 10.1080/03639045.2022.2117373] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To achieve an effective topical formulation of Methotrexate (MTX) as a first-line treatment of psoriasis, we formulated three MTX-loaded electrospun nanofibrous patches composed of polycaprolactone (PCL), Eudragit L100, and a mixture of them. SIGNIFICANCE Topical delivery of MTX provides an appropriate therapeutic performance while circumventing the life-threatening side effects of systemic administration. METHODS Three MTX-loaded electrospun nanofibrous patches were prepared and characterized in terms of size and morphology (using SEM), thermal behavior (by TGA and DSC), and crystalline structure (using XRD). Furthermore, the wettability and mechanical strength of samples were investigated through water contact angle and tensile strength tests. Also, the encapsulation efficiency of MTX was calculated. Subsequently, in vitro drug release profile of each formulation was obtained and different kinetic models were fitted to achieve the best-matched model. Accordingly, the ex vivo skin permeation of MTX was studied for the optimum formulation. RESULTS All samples showed appropriate morphology, thermal behavior, and encapsulation efficiency. Also, XRD results showed that MTX is dispersed within the polymeric matrices in the amorphous state (with no crystalline region). Release studies demonstrated that MTX-loaded Eudragit L100-PCL formulation outperformed in terms of mechanical behavior and in vitro drug release. This formulation also exhibited better skin permeation. CONCLUSION The obtained controlled-release MTX-loaded electrospun patches seem promising to provide a long-acting topical treatment of psoriatic plaques with minimized systemic side effects.
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Affiliation(s)
- Shiva Hashemi
- Department of Pharmaceutics and Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Alireza Mortazavi
- Department of Pharmaceutics and Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Reza Moghimi
- Department of Pharmaceutics and Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Protein Technology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Behzad Darbasizadeh
- Department of Pharmaceutics and Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Chen A, Luo Y, Xu J, Guan X, He H, Xuan X, Wu J. Latest on biomaterial-based therapies for topical treatment of psoriasis. J Mater Chem B 2022; 10:7397-7417. [PMID: 35770701 DOI: 10.1039/d2tb00614f] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Psoriasis is an autoimmune inflammatory disease which is fundamentally different from dermatitis. Its treatments include topical medications and systemic drugs depending on different stages of the disease. However, these commonly used therapies are falling far short of clinical needs due to various drawbacks. More precise therapeutic strategies with minimized side effects and improved compliance are highly demanded. Recently, the rapid development of biomaterial-based therapies has made it possible and promising to attain topical psoriasis treatment. In this review, we briefly describe the significance and challenges of the topical treatment of psoriasis and emphatically overview the latest progress in novel biomaterial-based topical therapies for psoriasis including microneedles, nanoparticles, nanofibers, and hydrogels. Current clinical trials related to each biomaterial are also summarized and discussed.
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Affiliation(s)
- Anqi Chen
- Department of Dermatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China. .,School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yuting Luo
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035, China
| | - Jie Xu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035, China
| | - Xueran Guan
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035, China
| | - Huacheng He
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China.
| | - Xuan Xuan
- Department of Dermatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China.
| | - Jiang Wu
- Department of Dermatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China. .,School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035, China
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Krysiak ZJ, Szewczyk PK, Berniak K, Sroczyk EA, Boratyn E, Stachewicz U. Stretchable skin hydrating PVB patches with controlled pores' size and shape for deliberate evening primrose oil spreading, transport and release. BIOMATERIALS ADVANCES 2022; 136:212786. [PMID: 35929319 DOI: 10.1016/j.bioadv.2022.212786] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 03/29/2022] [Accepted: 03/31/2022] [Indexed: 06/15/2023]
Abstract
With the increasing number of skin problems such as atopic dermatitis and the number of affected people, scientists are looking for alternative treatments to standard ointment or cream applications. Electrospun membranes are known for their high porosity and surface to volume area, which leads to a great loading capacity and their applications as skin patches. Polymer fibers are widely used for biomedical applications such as drug delivery systems or regenerative medicine. Importantly, fibrous meshes are used as oil reservoirs due to their excellent absorption properties. In our study, nano- and microfibers of poly (vinyl butyral-co-vinyl alcohol-co-vinyl acetate) (PVB) were electrospun. The biocompatibility of PVB fibers was confirmed with the keratinocytes culture studies, including cells' proliferation and replication tests. To verify the usability and stretchability of electrospun membranes, they were tested in two forms as-spun and elongated after uniaxially stretched. We examine oil transport through the patches for as-spun fibers and compare it with the numerical simulation of oil flow in the 3D reconstruction of nano- and microfiber networks. Evening primrose oil spreading and water vapor transmission rate (WVTR) tests were performed too. Finally, for skin hydration tests, manufactured materials loaded with evening primrose oil were applied to the forearm of volunteers for 6 h, showing increased skin moisture after using patches. This study clearly demonstrates that pore size and shape, together with fiber diameter, influence oil transport in the electrospun patches allowing to understand the key driving process of electrospun PVB patches for skin hydration applications. The oil release improves skin moisture and can be designed regarding the needs, by manufacturing different fibers' sizes and arrangements. The fibrous based patches loaded with oils are easy to handle and could remain on the altered skin for a long time and deliver the oil, therefore they are an ideal material for overnight bandages for skin treatment.
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Affiliation(s)
- Zuzanna J Krysiak
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow, Poland
| | - Piotr K Szewczyk
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow, Poland
| | - Krzysztof Berniak
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow, Poland
| | - Ewa A Sroczyk
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow, Poland
| | | | - Urszula Stachewicz
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow, Poland.
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Stachewicz U. Application of Electrospun Polymeric Fibrous Membranes as Patches for Atopic Skin Treatments. ADVANCES IN POLYMER SCIENCE 2022. [DOI: 10.1007/12_2022_139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Özen İ, Wang X. Biomedicine: electrospun nanofibrous hormonal therapies through skin/tissue—a review. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1985493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- İlhan Özen
- Textile Engineering Department, Erciyes University, Melikgazi, Kayseri, Turkey
| | - Xungai Wang
- Institute for Frontier Materials, Deakin University, Geelong, Australia
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Kumar L, Verma S, Joshi K, Utreja P, Sharma S. Nanofiber as a novel vehicle for transdermal delivery of therapeutic agents: challenges and opportunities. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00324-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Abstract
Background
Transdermal delivery of drugs is a quite challenging task for pharmaceutical scientists. The transdermal route is preferred over the oral route due to various advantages like avoidance of the first-pass effect, non-invasiveness, and high patient compliance. Therefore, it is necessary to develop an effective carrier system that enables the effective passage of the drug through the dermal barrier.
Main body of abstract
Various novel drug delivery systems are used to enhance the permeation of a variety of drugs through the skin barrier. Researchers around the globe have explored nanofibers for the transdermal delivery of various therapeutic agents. Nanofibers are designed to have a high concentration of therapeutic agents in them promoting their flux through various skin layers. Polymeric nanofibers can be explored for the loading of both hydrophilic and lipophilic drugs. Biopolymer-based nanofibers have been also explored for transdermal delivery. They are capable of controlling the release of therapeutic agents for a prolonged time.
Short conclusion
The literature presented in this review paper provides significant proof that nanofibers will have an intense impact on the transdermal delivery of different bioactive molecules in the future.
Graphic abstract
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Krysiak ZJ, Kaniuk Ł, Metwally S, Szewczyk PK, Sroczyk EA, Peer P, Lisiecka-Graca P, Bailey RJ, Bilotti E, Stachewicz U. Nano- and Microfiber PVB Patches as Natural Oil Carriers for Atopic Skin Treatment. ACS APPLIED BIO MATERIALS 2020; 3:7666-7676. [PMID: 33225238 PMCID: PMC7672701 DOI: 10.1021/acsabm.0c00854] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 08/18/2020] [Indexed: 11/30/2022]
Abstract
![]()
Atopic
dermatitis (eczema) is a widespread disorder, with researchers
constantly looking for more efficacious treatments. Natural oils are
reported to be an effective therapy for dry skin, and medical textiles
can be used as an alternative or supporting therapy. In this study,
fibrous membranes from poly(vinyl butyral-co-vinyl alcohol-co-vinyl
acetate) (PVB) with low and high molecular weights were manufactured
to obtain nano- and micrometer fibers via electrospinning
for the designed patches used as oil carriers for atopic skin treatment.
The biocompatibility of PVB patches was analyzed using proliferation
tests and scanning electron microscopy (SEM), which combined with
a focused ion beam (FIB) allowed for the 3D visualization of patches.
The oil spreading tests with evening primrose, black cumin seed, and
borage were verified with cryo-SEM, which showed the advantage nanofibers
have over microfibers as carriers for low-viscosity oils. The skin
tests expressed the usability and the enhanced oil delivery performance
for electrospun patches. We demonstrate that through the material
nano- and microstructure, commercially available polymers such as
PVB have great potential to be deployed as a biomaterial in medical
applications, such as topical treatments for chronic skin conditions.
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Affiliation(s)
- Zuzanna J Krysiak
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Łukasz Kaniuk
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Sara Metwally
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Piotr K Szewczyk
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Ewa A Sroczyk
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Petra Peer
- Institute of Hydrodynamics of the Czech Academy of Sciences, Prague 16612, Czech Republic
| | - Paulina Lisiecka-Graca
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Russell J Bailey
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, U.K
| | - Emiliano Bilotti
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, U.K
| | - Urszula Stachewicz
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
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Biopolymeric films as delivery vehicles for controlled release of hydrocortisone: Promising devices to treat chronic skin diseases. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 114:111074. [DOI: 10.1016/j.msec.2020.111074] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 12/17/2022]
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Celebioglu A, Uyar T. Hydrocortisone/cyclodextrin complex electrospun nanofibers for a fast-dissolving oral drug delivery system. RSC Med Chem 2020; 11:245-258. [PMID: 33479631 PMCID: PMC7484989 DOI: 10.1039/c9md00390h] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 10/07/2019] [Indexed: 12/29/2022] Open
Abstract
The electrospinning of hydrocortisone/cyclodextrin complex nanofibers was performed in order to develop a fast-dissolving oral drug delivery system. Hydrocortisone is a water-insoluble hydrophobic drug, yet, the water solubility of hydrocortisone was significantly enhanced by inclusion complexation with hydroxypropyl-beta-cyclodextrin (HP-β-CyD). In this study, hydrocortisone/HP-β-CyD complexes were prepared in aqueous solutions having molar ratios of 1/1, 1/1.5 and 1/2 (hydrocortisone/HP-β-CyD). Highly concentrated aqueous solutions of HP-β-CyD (180%, w/v) were used for hydrocortisone/HP-β-CyD systems (1/1, 1/1.5 and 1/2) in order to perform electrospinning without the use of an additional polymer matrix. The turbidity of hydrocortisone/HP-β-CyD (1/1 and 1/1.5) aqueous solutions indicated the presence of some uncomplexed crystals of hydrocortisone whereas the aqueous solution of hydrocortisone/HP-β-CyD (1/2) was homogeneous indicating that hydrocortisone becomes totally water-soluble by inclusion complexation with HP-β-CyD. Nonetheless, the electrospinning of hydrocortisone/HP-β-CyD systems (1/1, 1/1.5 and 1/2) successfully yielded defect-free uniform nanofibrous structures. Moreover, the electrospinning process was quite efficient that hydrocortisone was completely preserved without any loss yielding hydrocortisone/HP-β-CyD nanofibers having the initial molar ratios (1/1, 1/1.5 and 1/2). The structural and thermal characterization of the hydrocortisone/HP-β-CyD nanofibers revealed that hydrocortisone was totally inclusion complexed with HP-β-CyD and was in the amorphous state in hydrocortisone/HP-β-CyD (1/2) nanofibers whereas some uncomplexed crystalline hydrocortisone was present in hydrocortisone/HP-β-CyD (1/1 and 1/1.5) nanofibers. Nevertheless, hydrocortisone/HP-β-CyD (1/1, 1/1.5 and 1/2) complex aqueous systems were electrospun in the form of nanofibrous webs having a free-standing and flexible nature. The hydrocortisone/HP-β-CyD (1/1, 1/1.5 and 1/2) nanofibrous webs have shown fast-dissolving behavior in water or when they were in contact with artificial saliva. Yet, the hydrocortisone/HP-β-CyD (1/2) nanofibrous web dissolved more quickly than the hydrocortisone/HP-β-CyD (1/1 and 1/1.5) nanofibrous webs due to the full inclusion complexation and the amorphous state of hydrocortisone in this sample. In short, the results suggest that polymer-free electrospun nanofibrous webs produced from hydrocortisone/HP-β-CyD could be quite applicable for fast-dissolving oral drug delivery systems.
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Affiliation(s)
- Asli Celebioglu
- Department of Fiber Science & Apparel Design , College of Human Ecology , Cornell University , Ithaca , NY 14853 , USA . ;
| | - Tamer Uyar
- Department of Fiber Science & Apparel Design , College of Human Ecology , Cornell University , Ithaca , NY 14853 , USA . ;
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