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Taghe S, Mirzaeei S, Bagheri M. Preparation of polycaprolactone and polymethacrylate nanofibers for controlled ocular delivery of ketorolac tromethamine: Pharmacokinetic study in Rabbit's Eye. Eur J Pharm Sci 2024; 192:106631. [PMID: 37951316 DOI: 10.1016/j.ejps.2023.106631] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 10/18/2023] [Accepted: 11/08/2023] [Indexed: 11/13/2023]
Abstract
Ophthalmitis is an inflammation of the eye triggered by various conditions including diseases, allergy, trauma, or surgery. Management of this condition usually includes administration of topical anti-inflammatory eye drops such as nonsteroidal anti-inflammatory drugs. To overcome the challenges of conventional eye drops such as frequent administration and low intraocular bioavailability, nanofibrous inserts of Ketorolac tromethamine (KET) were developed in this study. Polycaprolactone and polymethacrylate containing KET were electrospun to prepare biocompatible and biodegradable nanofibers. The inserts were studied for morphology, drug-polymer interaction, physicochemical properties, cell viability, in vitro drug release study and pharmacokinetic study in rabbit's eye. Uniform nanofibers with mean diameters < 350 nm were developed. Suitable mechanical properties with tensile strength up to 2.8 MPa indicated high strength and flexibility of inserts. Nanofibers exhibited controlled drug release for up to 140 h at a concentration more than 50 μg/ml in tears without causing any damage or irritation to the eye. Formulations indicated enhanced pharmacokinetics with 6- to 8-times higher Area Under the Curve (AUC0-144) compared to KET eye drop. Acceptable cell viability confirmed the safety of inserts. Due to the fact that this preservative-free polymer insert can obtain therapeutic concentration in the tear film without fluctuation, it can be a suitable alternative for the treatment of intraocular inflammations with less complications, easier use, and even higher intraocular penetration.
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Affiliation(s)
- Shiva Taghe
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Pharmaceutical Sciences Research Center, Rahesh Daru Novine, Kermanshah 6715847141, Iran; Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Shahla Mirzaeei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Pharmaceutical Sciences Research Center, Rahesh Daru Novine, Kermanshah 6715847141, Iran; Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Masood Bagheri
- Clinical Research Development Center, Imam Khomeini and Mohammad Kermanshahi and Farabi Hospitals, Kermanshah University of Medical Sciences, Kermanshah, Iran; Department of Ophthalmology, Imam Khomeini Eye Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
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2
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Khalid GM, Billa N. Drug-Eluting Sutures by Hot-Melt Extrusion: Current Trends and Future Potentials. Materials (Basel) 2023; 16:7245. [PMID: 38005174 PMCID: PMC10672932 DOI: 10.3390/ma16227245] [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] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/06/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023]
Abstract
Surgical site infections (SSIs) may result from surgical procedures requiring a secondary administration of drugs at site or systemically in treating the infection. Drug-eluting sutures containing antimicrobial agents symbolise a latent strategy that precludes a secondary drug administration. It also offers the possibility of delivering a myriad of therapeutic agents to a localised wound site to effect analgesia, anti-inflammation, or the deployment of proteins useful for wound healing. Further, the use of biodegradable drug-eluting sutures eliminates the need for implanting foreign material into the wound, which needs to be removed after healing. In this review, we expound on recent trends in the manufacture of drug-eluting sutures with a focus on the hot-melt extrusion (HME) technique. HME provides a solvent-free, continuous one-step manufacturing conduit for drug-eluting sutures, hence, there is no drying step, which can be detrimental to the drug or suture threads and, thus, environmentally friendly. There is the possibility of combining the technology with additive manufacturing platforms to generate personalised drug-loaded implantable devices through prototyping and scalability. The review also highlights key material requirements for fabricating drug-eluting sutures by HME, as well as quality attributes. Finally, a preview of emerging drug-eluting sutures and advocacy for harmonisation of quality assurance by regulatory authorities that permits quality evaluation of novelty sutures is presented.
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Affiliation(s)
- Garba M. Khalid
- Department of Pharmaceutics, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK;
- FabRx Ltd., Henwood House, Henwood, Asford TN24 8DH, UK
| | - Nashiru Billa
- Pharmaceutical Sciences Department, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
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3
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Han H, Tang L, Li Y, Li Y, Bi M, Wang J, Wang F, Wang L, Mao J. A multifunctional surgical suture with electroactivity assisted by oligochitosan/gelatin-tannic acid for promoting skin wound healing and controlling scar proliferation. Carbohydr Polym 2023; 320:121236. [PMID: 37659821 DOI: 10.1016/j.carbpol.2023.121236] [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: 05/11/2023] [Revised: 07/23/2023] [Accepted: 07/25/2023] [Indexed: 09/04/2023]
Abstract
Surgical wound closure is accomplished most frequently with sutures, optimally proceeding rapidly and without complication. However, surgical sutures can trigger foreign body reactions and incite abnormal collagen deposition. Sustained inflammation can result in abnormal wound healing with hypertrophic scar formation. Therefore, evolution of suture material to inhibit inflammation and scar formation is of great clinical significance. In the present study, commercial 3-0 PPDO [poly(p-dioxanone)] suture was used as the base material and modified by adding two layers: a drug-loaded layer and an electroactive layer. The former layer was curcumin (Cur) encapsulated by PLGA [poly (lactic-co-glycolic acid)] and the latter layer was composed of oligochitosan-gelatin/tannic acid/polypyrrole (OCS-GE/TA/PPy). The multifunctional sutures, named S@LC@CGTP, had desirable sustained-drug release properties in vitro where Cur could be released for 8 days due to the action of PLGA. The three-dimensional network structure of OCS-GE/TA ensured S@LC@CGTP against surface cracking and maintained electrical. Furthermore, using an in vivo experiment, S@LC@CGTP could attenuate inflammation and promote scar-free wound healing according to suppression of infiltrating inflammatory cells, down-regulation of TGF-β1 and collagen type I expression, and improved collagen arrangement. Cumulatively, we indicated that S@LC@CGTP suture material has great potential to facilitate optimal, nearly scarless healing of surgical incisions.
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Affiliation(s)
- Hui Han
- Thyroid Surgery Department, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Liqin Tang
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China; Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai 201620, China
| | - Yan Li
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China; Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai 201620, China
| | - Yong Li
- Thyroid Surgery Department, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Ming Bi
- General department, Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, China.
| | - Jun Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China
| | - Fujun Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China; Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai 201620, China; Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China
| | - Lu Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China; Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai 201620, China; Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China
| | - Jifu Mao
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China; Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai 201620, China; Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China.
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4
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Altun E, Bayram C, Gultekinoglu M, Matharu R, Delbusso A, Homer-Vanniasinkam S, Edirisinghe M. Pressure-Spun Fibrous Surgical Sutures for Localized Antibacterial Delivery: Development, Characterization, and In Vitro Evaluation. ACS Appl Mater Interfaces 2023; 15:45561-45573. [PMID: 37729472 PMCID: PMC10561146 DOI: 10.1021/acsami.3c07956] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 09/06/2023] [Indexed: 09/22/2023]
Abstract
Surgical sutures designed to prevent infection are critical in addressing antibiotic-resistant pathogens that cause surgical site infections. Instead of antibiotics, alternative materials such as biocides have been assessed for coating commercially used sutures due to emerging antibiotic resistance concerns worldwide. This study has a new approach to the development of fibrous surgical sutures with the ability to deliver localized antibacterial agents. A new manufacturing process based on pressure spinning was used for the first time in the production of fibrous surgical sutures by physically blending antibacterial triclosan (Tri) agent with poly(lactic-co-glycolic acid) (PLGA) and poly(ethylene oxide) (PEO) polymers. Fibrous surgical sutures with virgin PLGA, virgin PEO, different ratios of PLGA-PEO, and different ratios of Tri-loaded PLGA-PEO fibrous sutures were produced to mimic the FDA- and NICE-approved PLGA-based sutures available in the market and compared for their characteristics. They were also tested simultaneously with commercially available sutures to compare their in vitro biodegradation, antibacterial, drug release, and cytotoxicity properties. After in vitro antibacterial testing for 24 h, sutures having 285 ± 12 μg/mg Tri loading were selected as a model for further testing as they exhibited antibacterial activity against all tested bacteria strains. The selected model of antibacterial fibrous sutures exhibited an initial burst of Tri release within 24 h, followed by a sustained release for the remaining time until the sutures completely degraded within 21 days. The cell viability assay showed that these surgical sutures had no cytotoxic effect on mammalian cells.
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Affiliation(s)
- Esra Altun
- Department
of Mechanical Engineering, University College
London (UCL), Torrington Place, London WC1E 7JE, U.K.
| | - Cem Bayram
- Department
of Nanotechnology and Nanomedicine, Graduate School of Science and
Engineering, Hacettepe University, Ankara 06800, Turkey
| | - Merve Gultekinoglu
- Department
of Nanotechnology and Nanomedicine, Graduate School of Science and
Engineering, Hacettepe University, Ankara 06800, Turkey
| | - Rupy Matharu
- Department
of Civil, Environmental and Geomatic Engineering, University College London, Gower Street, London WC1E
6BT, U.K.
| | - Angelo Delbusso
- Department
of Mechanical Engineering, University College
London (UCL), Torrington Place, London WC1E 7JE, U.K.
| | | | - Mohan Edirisinghe
- Department
of Mechanical Engineering, University College
London (UCL), Torrington Place, London WC1E 7JE, U.K.
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5
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Shafiq M, Rafique M, Cui Y, Pan L, Do CW, Ho EA. An insight on ophthalmic drug delivery systems: Focus on polymeric biomaterials-based carriers. J Control Release 2023; 362:446-467. [PMID: 37640109 DOI: 10.1016/j.jconrel.2023.08.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 05/15/2023] [Revised: 08/18/2023] [Accepted: 08/21/2023] [Indexed: 08/31/2023]
Abstract
Presently, different types of eye diseases, such as glaucoma, myopia, infection, and dry eyes are treated with topical eye drops. However, due to ocular surface barriers, eye drops require multiple administrations, which may cause several risks, thereby necessitating additional strategies. Some of the key characteristics of an ideal ocular drug delivery system are as follows: (a) good penetration into cornea, (b) high drug retention in the ocular tissues, (c) targetability to the desired regions of the eye, and (d) good bioavailability. It is worthy to note that the corneal epithelial tight junctions hinder the permeation of therapeutics through the cornea. Therefore, it is necessary to design nanocarriers that can overcome these barriers and enhance drug penetration into the inner parts of the eye. Moreover, intelligent multifunctional nanocarriers can be designed to include cavities, which may help encapsulate sufficient amount of the drug. In addition, nanocarriers can be modified with the targeting moieties. Different types of nanocarriers have been developed for ocular drug delivery applications, including emulsions, liposomes, micelles, and nanoparticles. However, these formulations may be rapidly cleared from the eye. The therapeutic use of the nanoparticles (NPs) is also hindered by the non-specific adsorption of proteins on NPs, which may limit their interaction with the cellular moieties or other targeted biological factors. Functional drug delivery systems (DDS), which can offer targeted ocular drug delivery while avoiding the non-specific protein adsorption could exhibit great potential. This could be further realized by the on-demand DDS, which can respond to the stimuli in a spatio-temporal fashion. The cell-mediated DDS offer another valuable platform for ophthalmological drug delivery.
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Affiliation(s)
- Muhammad Shafiq
- Department of Chemical Engineering, Faculty of Engineering, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Muhammad Rafique
- Key Laboratory of Bioactive Materials (Ministry of Education), State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yingkun Cui
- School of Optometry, The Hong Kong Polytechnic University, Hong Kong, China
| | - Li Pan
- School of Optometry, The Hong Kong Polytechnic University, Hong Kong, China; First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, China
| | - Chi-Wai Do
- School of Optometry, The Hong Kong Polytechnic University, Hong Kong, China; Research Institute of Smart Ageing (RISA), The Hong Kong Polytechnic University, Hong Kong, China; Centre for Eye and Vision Research (CEVR), 17W Hong Kong Science Park, Hong Kong
| | - Emmanuel A Ho
- School of Pharmacy, University of Waterloo, Waterloo, Canada; Waterloo Institute for Nanotechnology, Waterloo, Canada; Centre for Eye and Vision Research (CEVR), 17W Hong Kong Science Park, Hong Kong.
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6
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Li Y, Meng Q, Chen S, Ling P, Kuss MA, Duan B, Wu S. Advances, challenges, and prospects for surgical suture materials. Acta Biomater 2023; 168:78-112. [PMID: 37516417 DOI: 10.1016/j.actbio.2023.07.041] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 07/07/2023] [Accepted: 07/24/2023] [Indexed: 07/31/2023]
Abstract
As one of the long-established and necessary medical devices, surgical sutures play an essentially important role in the closing and healing of damaged tissues and organs postoperatively. The recent advances in multiple disciplines, like materials science, engineering technology, and biomedicine, have facilitated the generation of various innovative surgical sutures with humanization and multi-functionalization. For instance, the application of numerous absorbable materials is assuredly a marvelous progression in terms of surgical sutures. Moreover, some fantastic results from recent laboratory research cannot be ignored either, ranging from the fiber generation to the suture structure, as well as the suture modification, functionalization, and even intellectualization. In this review, the suture materials, including natural or synthetic polymers, absorbable or non-absorbable polymers, and metal materials, were first introduced, and then their advantages and disadvantages were summarized. Then we introduced and discussed various fiber fabrication strategies for the production of surgical sutures. Noticeably, advanced nanofiber generation strategies were highlighted. This review further summarized a wide and diverse variety of suture structures and further discussed their different features. After that, we covered the advanced design and development of surgical sutures with multiple functionalizations, which mainly included surface coating technologies and direct drug-loading technologies. Meanwhile, the review highlighted some smart and intelligent sutures that can monitor the wound status in a real-time manner and provide on-demand therapies accordingly. Furthermore, some representative commercial sutures were also introduced and summarized. At the end of this review, we discussed the challenges and future prospects in the field of surgical sutures in depth. This review aims to provide a meaningful reference and guidance for the future design and fabrication of innovative surgical sutures. STATEMENT OF SIGNIFICANCE: This review article introduces the recent advances of surgical sutures, including material selection, fiber morphology, suture structure and construction, as well as suture modification, functionalization, and even intellectualization. Importantly, some innovative strategies for the construction of multifunctional sutures with predetermined biological properties are highlighted. Moreover, some important commercial suture products are systematically summarized and compared. This review also discusses the challenges and future prospects of advanced sutures in a deep manner. In all, this review is expected to arouse great interest from a broad group of readers in the fields of multifunctional biomaterials and regenerative medicine.
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Affiliation(s)
- Yiran Li
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China
| | - Qi Meng
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China
| | - Shaojuan Chen
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China
| | - Peixue Ling
- Shandong Academy of Pharmaceutical Science, Jinan, 250101, China
| | - Mitchell A Kuss
- Mary & Dick Holland Regenerative Medicine Program and Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Bin Duan
- Mary & Dick Holland Regenerative Medicine Program and Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Shaohua Wu
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China; Shandong Academy of Pharmaceutical Science, Jinan, 250101, China.
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7
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Wang X, Luan F, Yue H, Song C, Wang S, Feng J, Zhang X, Yang W, Li Y, Wei W, Tao Y. Recent advances of smart materials for ocular drug delivery. Adv Drug Deliv Rev 2023; 200:115006. [PMID: 37451500 DOI: 10.1016/j.addr.2023.115006] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 07/18/2023]
Abstract
Owing to the variety and complexity of ocular diseases and the natural ocular barriers, drug therapy for ocular diseases has significant limitations, such as poor drug targeting to the site of the disease, poor drug penetration, and short drug retention time in the vitreous body. With the development of biotechnology, biomedical materials have reached the "smart" stage. To date, despite their inability to overcome all the aforementioned drawbacks, a variety of smart materials have been widely tested to treat various ocular diseases. This review analyses the most recent developments in multiple smart materials (inorganic particles, polymeric particles, lipid-based particles, hydrogels, and devices) to treat common ocular diseases and discusses the future directions and perspectives regarding clinical translation issues. This review can help researchers rationally design more smart materials for specific ocular applications.
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Affiliation(s)
- Xiaojun Wang
- Department of Ophthalmology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, PR China; State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Fuxiao Luan
- Department of Ophthalmology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, PR China; State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Hua Yue
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Cui Song
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Shuang Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Jing Feng
- Department of Ophthalmology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, PR China
| | - Xiao Zhang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Wei Yang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yuxin Li
- Department of Ophthalmology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, PR China; State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Wei Wei
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
| | - Yong Tao
- Department of Ophthalmology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, PR China.
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8
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Uzel E, Durgun ME, Esentürk-Güzel İ, Güngör S, Özsoy Y. Nanofibers in Ocular Drug Targeting and Tissue Engineering: Their Importance, Advantages, Advances, and Future Perspectives. Pharmaceutics 2023; 15:pharmaceutics15041062. [PMID: 37111550 PMCID: PMC10145046 DOI: 10.3390/pharmaceutics15041062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/17/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023] Open
Abstract
Nanofibers are frequently encountered in daily life as a modern material with a wide range of applications. The important advantages of production techniques, such as being easy, cost effective, and industrially applicable are important factors in the preference for nanofibers. Nanofibers, which have a broad scope of use in the field of health, are preferred both in drug delivery systems and tissue engineering. Due to the biocompatible materials used in their construction, they are also frequently preferred in ocular applications. The fact that they have a long drug release time as a drug delivery system and have been used in corneal tissue studies, which have been successfully developed in tissue engineering, stand out as important advantages of nanofibers. This review examines nanofibers, their production techniques and general information, nanofiber-based ocular drug delivery systems, and tissue engineering concepts in detail.
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Affiliation(s)
- Egemen Uzel
- Institute of Graduate Studies in Health Sciences, Istanbul University, Istanbul 34010, Türkiye
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul 34126, Türkiye
| | - Meltem Ezgi Durgun
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul 34126, Türkiye
| | - İmren Esentürk-Güzel
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Health Sciences, Istanbul 34668, Türkiye
| | - Sevgi Güngör
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul 34126, Türkiye
| | - Yıldız Özsoy
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul 34126, Türkiye
- Correspondence: ; Tel.: +90-212-4400000 (ext. 13498)
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9
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Parikh KS, Josyula A, Inoue T, Fukunishi T, Zhang H, Omiadze R, Shi R, Yazdi Y, Hanes J, Ensign LM, Hibino N. Nanofiber-coated, tacrolimus-eluting sutures inhibit post-operative neointimal hyperplasia in rats. J Control Release 2023; 353:96-104. [PMID: 36375620 PMCID: PMC9892275 DOI: 10.1016/j.jconrel.2022.11.020] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 10/13/2022] [Accepted: 11/08/2022] [Indexed: 11/24/2022]
Abstract
Post-operative complications of vascular anastomosis procedures remain a significant clinical challenge and health burden globally. Each year, millions of anastomosis procedures connect arteries and/or veins in vascular bypass, vascular access, organ transplant, and reconstructive surgeries, generally via suturing. Dysfunction of these anastomoses, primarily due to neointimal hyperplasia and the resulting narrowing of the vessel lumen, results in failure rates of up to 50% and billions of dollars in costs to the healthcare system. Non-absorbable sutures are the gold standard for vessel anastomosis; however, damage from the surgical procedure and closure itself causes an inflammatory cascade that leads to neointimal hyperplasia at the anastomosis site. Here, we demonstrate the development of a novel, scalable manufacturing system for fabrication of high strength sutures with nanofiber-based coatings composed of generally regarded as safe (GRAS) polymers and either sirolimus, tacrolimus, everolimus, or pimecrolimus. These sutures provided sufficient tensile strength for maintenance of the vascular anastomosis and sustained drug delivery at the site of the anastomosis. Tacrolimus-eluting sutures provided a significant reduction in neointimal hyperplasia in rats over a period of 14 days with similar vessel endothelialization in comparison to conventional nylon sutures. In contrast, systemically delivered tacrolimus caused significant weight loss and mortality due to toxicity. Thus, drug-eluting sutures provide a promising platform to improve the outcomes of vascular interventions without modifying the clinical workflow and without the risks associated with systemic drug delivery.
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Affiliation(s)
- Kunal S Parikh
- Center for Nanomedicine, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Center for Bioengineering Innovation & Design, Johns Hopkins University, Baltimore, MD 21218, USA; Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Aditya Josyula
- Center for Nanomedicine, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Takahiro Inoue
- Department of Cardiac Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Takuma Fukunishi
- Department of Cardiac Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Huaitao Zhang
- Department of Cardiac Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Revaz Omiadze
- Center for Nanomedicine, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Richard Shi
- Center for Nanomedicine, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Youseph Yazdi
- Center for Bioengineering Innovation & Design, Johns Hopkins University, Baltimore, MD 21218, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Justin Hanes
- Center for Nanomedicine, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA; Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University, Baltimore, MD 21231, USA; Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Laura M Ensign
- Center for Nanomedicine, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA; Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University, Baltimore, MD 21231, USA; Department of Gynecology and Obstetrics and Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Narutoshi Hibino
- Department of Cardiac Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Department of Cardiac Surgery, University of Chicago/Advocate Children's Hospital, Chicago, IL 60637, USA.
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10
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Hong S, Yoon J, Cha J, Ahn J, Mandakhbayar N, Park JH, Im J, Jin G, Kim M, Knowles JC, Lee H, Lee J, Kim H. Hyperelastic, shape‐memorable, and ultra‐cell‐adhesive degradable polycaprolactone‐polyurethane copolymer for tissue regeneration. Bioeng Transl Med 2022; 7:e10332. [PMID: 36176615 PMCID: PMC9472029 DOI: 10.1002/btm2.10332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/04/2022] [Accepted: 04/13/2022] [Indexed: 12/05/2022] Open
Abstract
Novel polycaprolactone‐based polyurethane (PCL‐PU) copolymers with hyperelasticity, shape‐memory, and ultra‐cell‐adhesion properties are reported as clinically applicable tissue‐regenerative biomaterials. New isosorbide derivatives (propoxylated or ethoxylated ones) were developed to improve mechanical properties by enhanced reactivity in copolymer synthesis compared to the original isosorbide. Optimized PCL‐PU with propoxylated isosorbide exhibited notable mechanical performance (50 MPa tensile strength and 1150% elongation with hyperelasticity under cyclic load). The shape‐memory effect was also revealed in different forms (film, thread, and 3D scaffold) with 40%–80% recovery in tension or compression mode after plastic deformation. The ultra‐cell‐adhesive property was proven in various cell types which were reasoned to involve the heat shock protein‐mediated integrin (α5 and αV) activation, as analyzed by RNA sequencing and inhibition tests. After the tissue regenerative potential (muscle and bone) was confirmed by the myogenic and osteogenic responses in vitro, biodegradability, compatible in vivo tissue response, and healing capacity were investigated with in vivo shape‐memorable behavior. The currently exploited PCL‐PU, with its multifunctional (hyperelastic, shape‐memorable, ultra‐cell‐adhesive, and degradable) nature and biocompatibility, is considered a potential tissue‐regenerative biomaterial, especially for minimally invasive surgery that requires small incisions to approach large defects with excellent regeneration capacity.
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11
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Xu L, Liu Y, Zhou W, Yu D. Electrospun Medical Sutures for Wound Healing: A Review. Polymers (Basel) 2022; 14:polym14091637. [PMID: 35566807 PMCID: PMC9105379 DOI: 10.3390/polym14091637] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/16/2022] [Accepted: 04/17/2022] [Indexed: 02/01/2023] Open
Abstract
With the increasing demand for wound healing around the world, the level of medical equipment is also increasing, but sutures are still the preferred medical equipment for medical personnel to solve wound closures. Compared with the traditional sutures, the nanofiber sutures produced by combining the preparation technology of drug-eluting sutures have greatly improved both mechanical properties and biological properties. Electrospinning technology has attracted more attention as one of the most convenient and simple methods for preparing functional nanofibers and the related sutures. This review firstly discusses the structural classification of sutures and the performance analysis affecting the manufacture and use of sutures, followed by the discussion and classification of electrospinning technology, and then summarizes the relevant research on absorbable and non-absorbable sutures. Finally, several common polymers and biologically active substances used in creating sutures are concluded, the related applications of sutures are discussed, and the future prospects of electrospinning sutures are suggested.
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Affiliation(s)
- Lin Xu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (L.X.); (W.Z.)
| | - Yanan Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (L.X.); (W.Z.)
- Correspondence: (Y.L.); (D.Y.)
| | - Wenhui Zhou
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (L.X.); (W.Z.)
| | - Dengguang Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (L.X.); (W.Z.)
- Shanghai Engineering Technology Research Center for High-Performance Medical Device Materials, Shanghai 200093, China
- Correspondence: (Y.L.); (D.Y.)
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12
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Wang S, Yu Y, Li H, Huang Y, Wang J, Jin Q, Ji J. pH
‐sensitive polyion nanocomplexes for antimicrobial peptide delivery. Journal of Polymer Science 2022. [DOI: 10.1002/pol.20210945] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shuting Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Yan Yu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Heyang Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Yan Huang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Jing Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Qiao Jin
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Jian Ji
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
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13
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Madheswaran D, Sivan M, Valtera J, Kostakova EK, Egghe T, Asadian M, Novotny V, Nguyen NHA, Sevcu A, Morent R, De Geyter N, Lukas D. Composite yarns with antibacterial nanofibrous sheaths produced by collectorless alternating‐current electrospinning for suture applications. J Appl Polym Sci 2021. [DOI: 10.1002/app.51851] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Divyabharathi Madheswaran
- Faculty of Textile Engineering, Department of Nonwovens and Nanofibrous Materials Technical University of Liberec Liberec Czech Republic
| | - Manikandan Sivan
- Faculty of Textile Engineering, Department of Nonwovens and Nanofibrous Materials Technical University of Liberec Liberec Czech Republic
| | - Jan Valtera
- Faculty of Mechanical Engineering, Department of Textile Machine Design Technical University of Liberec Liberec Czech Republic
| | - Eva Kuzelova Kostakova
- Faculty of Science, Humanities, and Education, Department of Chemistry – Bioengineering Technical University of Liberec Liberec Czech Republic
| | - Tim Egghe
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - Mahtab Asadian
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - Vit Novotny
- Centre for Nanomaterials, Advanced Technologies and Innovations Technical University of Liberec Liberec Czech Republic
| | - Nhung H. A. Nguyen
- Centre for Nanomaterials, Advanced Technologies and Innovations Technical University of Liberec Liberec Czech Republic
| | - Alena Sevcu
- Faculty of Science, Humanities, and Education, Department of Chemistry – Bioengineering Technical University of Liberec Liberec Czech Republic
- Centre for Nanomaterials, Advanced Technologies and Innovations Technical University of Liberec Liberec Czech Republic
| | - Rino Morent
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - Nathalie De Geyter
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - David Lukas
- Faculty of Science, Humanities, and Education, Department of Chemistry – Bioengineering Technical University of Liberec Liberec Czech Republic
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14
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Josyula A, Omiadze R, Parikh K, Kanvinde P, Appell MB, Patel P, Saeed H, Sutar Y, Anders N, He P, McDonnell PJ, Hanes J, Date AA, Ensign LM. An ion-paired moxifloxacin nanosuspension eye drop provides improved prevention and treatment of ocular infection. Bioeng Transl Med 2021; 6:e10238. [PMID: 34589607 PMCID: PMC8459599 DOI: 10.1002/btm2.10238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/08/2021] [Accepted: 06/13/2021] [Indexed: 12/28/2022] Open
Abstract
There are numerous barriers to achieving effective intraocular drug administration, including the mucus layer protecting the ocular surface. For this reason, antibiotic eye drops must be used multiple times per day to prevent and treat ocular infections. Frequent eye drop use is inconvenient for patients, and lack of adherence to prescribed dosing regimens limits treatment efficacy and contributes to antibiotic resistance. Here, we describe an ion-pairing approach used to create an insoluble moxifloxacin-pamoate (MOX-PAM) complex for formulation into mucus-penetrating nanosuspension eye drops (MOX-PAM NS). The MOX-PAM NS provided a significant increase in ocular drug absorption, as measured by the area under the curve in cornea tissue and aqueous humor, compared to Vigamox in healthy rats. Prophylactic and treatment efficacy were evaluated in a rat model of ocular Staphylococcus aureus infection. A single drop of MOX-PAM NS was more effective than Vigamox, and completely prevented infection. Once a day dosing with MOX-PAM NS was similar, if not more effective, than three times a day dosing with Vigamox for treating S. aureus infection. The MOX-PAM NS provided increased intraocular antibiotic absorption and improved prevention and treatment of ocular keratitis, and the formulation approach is highly translational and clinically relevant.
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Affiliation(s)
- Aditya Josyula
- The Center for Nanomedicine, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Revaz Omiadze
- The Center for Nanomedicine, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Ophthalmology, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Kunal Parikh
- The Center for Nanomedicine, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Ophthalmology, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Center for Bioengineering Innovation and DesignJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Pranjali Kanvinde
- The Center for Nanomedicine, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Ophthalmology, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Matthew B. Appell
- The Center for Nanomedicine, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Pratikkumar Patel
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of PharmacyUniversity of Hawaii HiloHawaiiUSA
| | - Hiwa Saeed
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of PharmacyUniversity of Hawaii HiloHawaiiUSA
| | - Yogesh Sutar
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of PharmacyUniversity of Hawaii HiloHawaiiUSA
| | - Nicole Anders
- The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins UniversityBaltimoreMarylandUSA
| | - Ping He
- The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins UniversityBaltimoreMarylandUSA
| | - Peter J. McDonnell
- Department of Ophthalmology, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Justin Hanes
- The Center for Nanomedicine, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
- Department of Ophthalmology, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins UniversityBaltimoreMarylandUSA
- Department of Environmental Health SciencesJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of NeurosurgeryJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Abhijit A. Date
- The Center for Nanomedicine, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Ophthalmology, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of PharmacyUniversity of Hawaii HiloHawaiiUSA
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of MedicineUniversity of Hawaii ManoaHonoluluHawaiiUSA
| | - Laura M. Ensign
- The Center for Nanomedicine, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
- Department of Ophthalmology, The Wilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins UniversityBaltimoreMarylandUSA
- Department of Gynecology and Obstetrics and Division of Infectious DiseasesJohns Hopkins University School of MedicineBaltimoreMarylandUSA
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15
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Khan R, Yee AL, Gilbert JA, Haider A, Jamal SB, Muhammad F. Triclosan-containing sutures: safety and resistance issues need to be addressed prior to generalized use. Appl Nanosci 2021. [DOI: 10.1007/s13204-021-01979-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Abstract
Implantable biomaterials are essential surgical devices, extending and improving the quality of life of millions of people globally. Advances in materials science, manufacturing, and in our understanding of the biological response to medical device implantation over several decades have resulted in improved safety and functionality of biomaterials. However, post-operative infection and immune responses remain significant challenges that interfere with biomaterial functionality and host healing processes. The objectives of this review is to provide an overview of the biology of post-operative infection and the physiological response to implanted biomaterials and to discuss emerging strategies utilizing local drug delivery and surface modification to improve the long-term safety and efficacy of biomaterials.
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Affiliation(s)
- Aditya Josyula
- Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Kunal S Parikh
- Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- Center for Bioengineering Innovation and Design, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Ian Pitha
- Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Laura M Ensign
- Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA.
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA.
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA.
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University, Baltimore, MD, 21287, USA.
- Departments Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- Department of Medicine, Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
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17
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Mirzaeei S, Taghe S, Asare-Addo K, Nokhodchi A. Polyvinyl Alcohol/Chitosan Single-Layered and Polyvinyl Alcohol/Chitosan/Eudragit RL100 Multi-layered Electrospun Nanofibers as an Ocular Matrix for the Controlled Release of Ofloxacin: an In Vitro and In Vivo Evaluation. AAPS PharmSciTech 2021; 22:170. [PMID: 34085150 PMCID: PMC8175245 DOI: 10.1208/s12249-021-02051-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 05/11/2021] [Indexed: 11/30/2022] Open
Abstract
A novel nanofiber insert was prepared with a modified electrospinning method to enhance the ocular residence time of ofloxacin (OFX) and to provide a sustained release pattern by covering hydrophilic polymers, chitosan/polyvinyl alcohol (CS/PVA) nanofibers, with a hydrophobic polymer, Eudragit RL100 in layers, and by glutaraldehyde (GA) cross-linking of CS-PVA nanofibers for the treatment of infectious conjunctivitis. The morphology of the prepared nanofibers was studied using scanning electron microscopy (SEM). The average fiber diameter was found to be 123 ± 23 nm for the single electrospun nanofiber with no cross-linking (OFX-O). The single nanofibers, cross-linked for 10 h with GA (OFX-OG), had an average fiber diameter of 159 ± 30 nm. The amount of OFX released from the nanofibers was measured in vitro and in vivo using UV spectroscopy and microbial assay methods against Staphylococcus aureus, respectively. The antimicrobial efficiency of OFX formulated in cross-linked and non-cross-linked nanofibers was affirmed by observing the inhibition zones of Staphylococcus aureus and Escherichia coli. In vivo studies using the OFX nanofibrous inserts on a rabbit eye confirmed a sustained release pattern for up to 96 h. It was found that the cross-linking of the nanofibers by GA vapor could reduce the burst release of OFX from OFX-loaded CS/PVA in one layer and multi-layered nanofibers. In vivo results showed that the AUC0–96 for the nanofibers was 9–20-folds higher compared to the OFX solution. This study thus demonstrates the potential of the nanofiber technology is being utilized to sustained drug release in ocular drug delivery systems.
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