1
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Jose AD, Foo KL, Hu G, Ngar L, Ryda B, Jaiswal J, Wu Z, Agarwal P, Thakur SS. Design and evaluation of curcumin-loaded poloxamer hydrogels as injectable depot formulations. Eur J Pharm Biopharm 2024:114372. [PMID: 38897552 DOI: 10.1016/j.ejpb.2024.114372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 06/06/2024] [Accepted: 06/16/2024] [Indexed: 06/21/2024]
Abstract
Poloxamer hydrogels are of interest as injectable depot delivery systems. However, their use for delivering hydrophobic drugs, such as curcumin, is limited due to poor loading capacity. Here, we evaluated the influence of incorporating hydrophobic medium chain triglycerides (MCT] or amphiphilic polyethylene glycol 400 (PEG400) on the physicochemical properties, drug loading, and in-vitro compatibility of a curcumin-loaded poloxamer hydrogel. Poloxamer 407 and 188 hydrogel formulations (16:6 w/w) were prepared and MCT and PEG400 (saturated with curcumin) were added to these systems, either alone or in combination, up to 10 % w/w. Formulation viscoelasticity, gelation behaviour, injectability, morphology and release profiles were assessed. The cytocompatibility of the formulations was also assessed on dermal fibroblasts (HDFn). Both additives increased curcumin loading into the formulation. Addition of MCT to the hydrogel lowered its gelation temperature, while PEG400 had no notable impact. Both additives increased the force required to inject the formulation. PEG400 containing systems were single phase whereas MCT addition created emulsion systems. All formulations released ∼20-30 % of their loaded curcumin in sustained fashion over 24 h. The modified hydrogel systems showed great biocompatibility on cells when administering up to 100-150 µM curcumin into the culture. This study addresses a key limitation in loading hydrophobic drugs into hydrogels and provides a strategy to enhance drug loading into and performance of hydrogels by integrating additives, such as MCT and PEG400 into the systems.
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Affiliation(s)
- Ashok David Jose
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Kea Leigh Foo
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Grace Hu
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Linda Ngar
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Bovinae Ryda
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Jagdish Jaiswal
- Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Zimei Wu
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Priyanka Agarwal
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Sachin Sunil Thakur
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
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2
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Wen X, Yang X, Ge Z, Ma H, Wang R, Tian F, Teng P, Gao S, Li K, Zhang B, Sivanathan S. Self-powered optical fiber biosensor integrated with enzymes for non-invasive glucose sensing. Biosens Bioelectron 2024; 253:116191. [PMID: 38460209 DOI: 10.1016/j.bios.2024.116191] [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: 01/23/2024] [Revised: 03/02/2024] [Accepted: 03/04/2024] [Indexed: 03/11/2024]
Abstract
To alleviate the discomfort associated with frequent blood glucose detection in diabetic patients, a novel non-invasive tear glucose biosensor has been developed. This involved the design and preparation of a photoelectrochemical probe based on an optical fiber and biological enzymes. One end of the optical fiber connects to a light source, acting as an energy source and imparting, self-powered capability to the biosensor. The opposite end is loaded with nanomaterials and glucose oxidase, designed for insertion into the sample to realize photoelectrochemical sensing. This innovative configuration not only improves the integration of the biosensor but is also suitable for analyzing minuscule voluminal samples. The results show that the proposed biosensor exhibits a linear range from 10 nM to 100 μM, possesses a low detection limit of 4.1 nM and a short response time of 0.7 s. Benefiting from the high selectivity of the enzyme, the proposed biosensor demonstrates excellent resistance to the interference of common tear components. In summary, this work provides a more effective method for non-invasive glucose detection and affords valuable ideas for the design and fabrication of non-invasive and self-powered biosensors.
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Affiliation(s)
- Xingyue Wen
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Xinghua Yang
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China.
| | - Zhongxuan Ge
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Hongyu Ma
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Rui Wang
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Fengjun Tian
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China.
| | - Pingping Teng
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Shuai Gao
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Kang Li
- Faculty of Computing, Engineering & Science, University of South Wales, Wales, CF37 1DL, UK
| | - Bo Zhang
- Faculty of Computing, Engineering & Science, University of South Wales, Wales, CF37 1DL, UK; Henan Academy of Special Optics Ltd., Xinxiang, 453000, China
| | - Sivagunalan Sivanathan
- Faculty of Computing, Engineering & Science, University of South Wales, Wales, CF37 1DL, UK
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3
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Shatabayeva E, Kaldybekov DB, Ulmanova L, Zhaisanbayeva BA, Mun EA, Kenessova ZA, Kudaibergenov SE, Khutoryanskiy VV. Enhancing Mucoadhesive Properties of Gelatin through Chemical Modification with Unsaturated Anhydrides. Biomacromolecules 2024; 25:1612-1628. [PMID: 38319691 PMCID: PMC10934270 DOI: 10.1021/acs.biomac.3c01183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/13/2024] [Accepted: 01/16/2024] [Indexed: 02/07/2024]
Abstract
Gelatin is a water-soluble natural polyampholyte with poor mucoadhesive properties. It has traditionally been used as a major ingredient in many pharmaceuticals, including soft and hard capsules, suppositories, tissue engineering, and regenerative medicine. The mucoadhesive properties of gelatin can be improved by modifying it through conjugation with specific adhesive unsaturated groups. In this study, gelatin was modified by reacting with crotonic, itaconic, and methacrylic anhydrides in varying molar ratios to yield crotonoylated-, itaconoylated-, and methacryloylated gelatins (abbreviated as Gel-CA, Gel-IA, and Gel-MA, respectively). The successful synthesis was confirmed using 1H NMR, FTIR spectroscopies, and colorimetric TNBSA assay. The effect of chemical modification on the isoelectric point was studied through viscosity and electrophoretic mobility measurements. The evolution of the storage (G') and loss (G'') moduli was employed to determine thermoreversible gelation points of modified and unmodified gelatins. The safety of modified gelatin derivatives was assessed with an in vivo slug mucosal irritation test (SMIT) and an in vitro MTT assay utilizing human pulmonary fibroblasts cell line. Two different model dosage forms, such as physical gels and spray-dried microparticles, were prepared and their mucoadhesive properties were evaluated using a flow-through technique with fluorescent detection and a tensile test with ex vivo porcine vaginal tissues and sheep nasal mucosa. Gelatins modified with unsaturated groups exhibited superior mucoadhesive properties compared to native gelatin. The enhanced ability of gelatin modified with these unsaturated functional groups is due to the formation of covalent bonds with cysteine-rich subdomains present in the mucin via thiol-ene click Michael-type addition reactions occurring under physiologically relevant conditions.
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Affiliation(s)
- Elvira
O. Shatabayeva
- Reading
School of Pharmacy, University of Reading, Whiteknights, RG6 6DX Reading, United Kingdom
- Department
of Chemistry and Chemical Technology, Al-Farabi
Kazakh National University, 050040 Almaty, Kazakhstan
| | - Daulet B. Kaldybekov
- Reading
School of Pharmacy, University of Reading, Whiteknights, RG6 6DX Reading, United Kingdom
- Department
of Chemistry and Chemical Technology, Al-Farabi
Kazakh National University, 050040 Almaty, Kazakhstan
- Institute
of Polymer Materials and Technology, 050019 Almaty, Kazakhstan
| | - Leila Ulmanova
- School
of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan
| | - Balnur A. Zhaisanbayeva
- School
of Engineering and Digital Sciences, Nazarbayev
University, 010000 Astana, Kazakhstan
| | - Ellina A. Mun
- School
of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan
| | - Zarina A. Kenessova
- Department
of Chemistry and Chemical Technology, Al-Farabi
Kazakh National University, 050040 Almaty, Kazakhstan
| | | | - Vitaliy V. Khutoryanskiy
- Reading
School of Pharmacy, University of Reading, Whiteknights, RG6 6DX Reading, United Kingdom
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4
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Huang Z, Moiseev RV, Melides SS, Bae W, Jurewicz I, Khutoryanskiy VV, Keddie JL. Pickering emulsions stabilised with oligoglycine-functionalised nanodiamond as a model system for ocular drug delivery applications. SOFT MATTER 2023; 19:5513-5526. [PMID: 37434584 DOI: 10.1039/d3sm00495c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
Oil-in-water emulsions, stabilised with conventional surfactants, are commonly used in eye drops for ocular drug delivery. However, the presence of surfactants can sometimes irritate tissues. Furthermore, conventional emulsions often have poor retention on ocular tissue. Pickering emulsions stabilised with nanoparticles have been gaining attention in recent years for a range of biomedical applications because of their biocompatibility. Here, Pickering emulsions were evaluated for the first time for the confinement of organic components for potential application in ocular drug delivery. For a model system, we used nanodiamond (ND) nanoparticles functionalised with covalently-bonded two-tail (2T) oligoglycine C10(NGly4)2 to make Pickering oil-in-water emulsions, which were stable over three months of storage under neutral pH. We proved the non-toxicity of ND-2T Pickering emulsions, comparable to buffer solution, via an ex vivo bovine corneal permeability and opacity test. The retention of the oil phase in the ND-2T stabilised emulsions on corneal tissue is significantly increased because of the mucoadhesive properties arising from the positively-charged terminal amino groups of 2T. Our formulated emulsions have a surface tension, pH and salt concentration comparable to that of tear fluid. The high retention of the ND-2T-stabilised emulsions on the corneal surface, in combination with their non-toxicity, gives them distinct advantages for ocular drug delivery. The principles of this model system could be applied in the future design of a range of formulations for drug delivery.
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Affiliation(s)
- Zhiwei Huang
- School of Mathematics and Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK.
| | - Roman V Moiseev
- Reading School of Pharmacy, University of Reading, Whiteknights, Reading, RG6 6DX, UK
- Physicochemical, Ex Vivo and Invertebrates Tests and Analysis Centre (PEVITAC), University of Reading, Whiteknights, Reading, RG6 6DX, UK
| | - Solomon S Melides
- School of Mathematics and Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK.
| | - Wooli Bae
- School of Mathematics and Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK.
| | - Izabela Jurewicz
- School of Mathematics and Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK.
| | - Vitaliy V Khutoryanskiy
- Reading School of Pharmacy, University of Reading, Whiteknights, Reading, RG6 6DX, UK
- Physicochemical, Ex Vivo and Invertebrates Tests and Analysis Centre (PEVITAC), University of Reading, Whiteknights, Reading, RG6 6DX, UK
| | - Joseph L Keddie
- School of Mathematics and Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK.
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5
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Li S, Chen L, Fu Y. Nanotechnology-based ocular drug delivery systems: recent advances and future prospects. J Nanobiotechnology 2023; 21:232. [PMID: 37480102 PMCID: PMC10362606 DOI: 10.1186/s12951-023-01992-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/09/2023] [Indexed: 07/23/2023] Open
Abstract
Ocular drug delivery has constantly challenged ophthalmologists and drug delivery scientists due to various anatomical and physiological barriers. Static and dynamic ocular barriers prevent the entry of exogenous substances and impede therapeutic agents' active absorption. This review elaborates on the anatomy of the eye and the associated constraints. Followed by an illustration of some common ocular diseases, including glaucoma and their current clinical therapies, emphasizing the significance of drug therapy in treating ocular diseases. Subsequently, advances in ocular drug delivery modalities, especially nanotechnology-based ocular drug delivery systems, are recommended, and some typical research is highlighted. Based on the related research, systematic and comprehensive characterizations of the nanocarriers are summarized, hoping to assist with future research. Besides, we summarize the nanotechnology-based ophthalmic drugs currently on the market or still in clinical trials and the recent patents of nanocarriers. Finally, inspired by current trends and therapeutic concepts, we provide an insight into the challenges faced by novel ocular drug delivery systems and further put forward directions for future research. We hope this review can provide inspiration and motivation for better design and development of novel ophthalmic formulations.
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Affiliation(s)
- Shiding Li
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, China
| | - Liangbo Chen
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, China
| | - Yao Fu
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, China.
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6
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Bierbrauer KL, Comini LR, Leonhard V, Escobar Manzanelli MA, Castelli G, Farfán S, Alasino RV, Beltramo DM. Eudragit Films as Carriers of Lipoic Acid for Transcorneal Permeability. Polymers (Basel) 2023; 15:polym15071793. [PMID: 37050407 PMCID: PMC10097161 DOI: 10.3390/polym15071793] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 04/08/2023] Open
Abstract
Diabetes mellitus (DM) is a highly prevalent disease affecting almost 10% of the world population; it is characterized by acute and chronic conditions. Diabetic patients have twenty-five times higher risk of going blind and developing cataracts early than the general population. Alpha-lipoic acid (LA) is a highly valuable natural antioxidant for the prevention and treatment of ophthalmic complications, such as diabetic keratopathy and retinopathy. However, its applicability is limited due to its low solubility in water; therefore, suitable systems are required for its formulation. In this work we developed an erodible insert based on Eudragit E100 (E PO) and Lipoic Acid (LA) for the delivery of this compound for the preventive treatment of ocular diseases especially in diabetic patients. Film evaluation was carried out by mechanical and thermal properties, mucoadhesivity, drug release, dynamic light scattering and corneal permeability as the concentration of LA increased. It was shown that upon LA release, it forms nanoparticles in combination with E PO that favor corneal permeation and LA retention in the cornea. These E PO-LA films also resulted non-irritable hence they are promising for their application in the treatment of ocular diseases.
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Affiliation(s)
- Karina L. Bierbrauer
- Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, Santa María de Punilla, Córdoba CP 5164, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CCT Córdoba, Córdoba CP X5000, Argentina
| | - Laura R. Comini
- Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, Santa María de Punilla, Córdoba CP 5164, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CCT Córdoba, Córdoba CP X5000, Argentina
| | - Victoria Leonhard
- Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, Santa María de Punilla, Córdoba CP 5164, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CCT Córdoba, Córdoba CP X5000, Argentina
| | - Micaela A. Escobar Manzanelli
- Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, Santa María de Punilla, Córdoba CP 5164, Argentina
| | - Gabriela Castelli
- Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, Santa María de Punilla, Córdoba CP 5164, Argentina
| | - Silvia Farfán
- Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, Santa María de Punilla, Córdoba CP 5164, Argentina
| | - Roxana V. Alasino
- Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, Santa María de Punilla, Córdoba CP 5164, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CCT Córdoba, Córdoba CP X5000, Argentina
| | - Dante M. Beltramo
- Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, Santa María de Punilla, Córdoba CP 5164, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CCT Córdoba, Córdoba CP X5000, Argentina
- Facultad de Ciencias Químicas, Universidad Católica de Córdoba, Córdoba CP X5000, Argentina
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7
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Onugwu AL, Nwagwu CS, Onugwu OS, Echezona AC, Agbo CP, Ihim SA, Emeh P, Nnamani PO, Attama AA, Khutoryanskiy VV. Nanotechnology based drug delivery systems for the treatment of anterior segment eye diseases. J Control Release 2023; 354:465-488. [PMID: 36642250 DOI: 10.1016/j.jconrel.2023.01.018] [Citation(s) in RCA: 46] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/07/2023] [Accepted: 01/07/2023] [Indexed: 01/17/2023]
Abstract
Diseases affecting the anterior segment of the eye are the primary causes of vision impairment and blindness globally. Drug administration through the topical ocular route is widely accepted because of its user/patient friendliness - ease of administration and convenience. However, it remains a significant challenge to efficiently deliver drugs to the eye through this route because of various structural and physiological constraints that restrict the distribution of therapeutic molecules into the ocular tissues. The bioavailability of topically applied ocular medications such as eye drops is typically less than 5%. Developing novel delivery systems to increase the retention time on the ocular surfaces and permeation through the cornea is one of the approaches adopted to boost the bioavailability of topically administered medications. Drug delivery systems based on nanotechnology such as micelles, nanosuspensions, nanoparticles, nanoemulsions, liposomes, dendrimers, niosomes, cubosomes and nanowafers have been investigated as effective alternatives to conventional ocular delivery systems in treating diseases of the anterior segment of the eye. This review discussed different nanotechnology-based delivery systems that are currently investigated for treating and managing diseases affecting the anterior ocular tissues. We also looked at the challenges in translating these systems into clinical use and the prospects of nanocarriers as a vehicle for the delivery of phytoactive compounds to the anterior segment of the eye.
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Affiliation(s)
- Adaeze Linda Onugwu
- Drug Delivery & Nanomedicines Research Laboratory, Department of Pharmaceutics, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Chinekwu Sherridan Nwagwu
- Drug Delivery & Nanomedicines Research Laboratory, Department of Pharmaceutics, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Obinna Sabastine Onugwu
- Department of Pharmacognosy, Enugu State University of Science and Technology, Agbani, Enugu State, Nigeria
| | - Adaeze Chidiebere Echezona
- Drug Delivery & Nanomedicines Research Laboratory, Department of Pharmaceutics, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Chinazom Precious Agbo
- Drug Delivery & Nanomedicines Research Laboratory, Department of Pharmaceutics, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Stella Amarachi Ihim
- Department of Pharmacology and Toxicology, University of Nigeria, Nsukka, Enugu State, Nigeria; Pharmacology and Physiology Unit, Department of Science Laboratory Technology, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Prosper Emeh
- Drug Delivery & Nanomedicines Research Laboratory, Department of Pharmaceutics, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Petra Obioma Nnamani
- Drug Delivery & Nanomedicines Research Laboratory, Department of Pharmaceutics, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Anthony Amaechi Attama
- Drug Delivery & Nanomedicines Research Laboratory, Department of Pharmaceutics, University of Nigeria, Nsukka, Enugu State, Nigeria; Department of Pharmaceutics and Pharmaceutical Technology, Enugu State University of Science and Technology, Agbani, Enugu State, Nigeria.
| | - Vitaliy V Khutoryanskiy
- Reading School of Pharmacy, University of Reading, Whiteknights, Reading, RG6 6AD, United Kingdom.
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8
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Ricci F, Racaniello GF, Lopedota A, Laquintana V, Arduino I, Lopalco A, Cutrignelli A, Franco M, Sigurdsson HH, Denora N. Chitosan/sulfobutylether-β-cyclodextrin based nanoparticles coated with thiolated hyaluronic acid for indomethacin ophthalmic delivery. Int J Pharm 2022; 622:121905. [PMID: 35697201 DOI: 10.1016/j.ijpharm.2022.121905] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 06/03/2022] [Accepted: 06/07/2022] [Indexed: 12/18/2022]
Abstract
Indomethacin (IND) is topically administered for the treatment of the anterior segment diseases such as conjunctivitis, uveitis, and inflammation prevention for post-cataract surgery, as well as posterior segment diseases as macular edema. Currently IND is available as 0.1% w/v hydroxypropyl-β-cyclodextrin-based eye drop formulation and its bioavailability is limited by several drawbacks such as the nasolacrimal duct draining, the reflex blinking and the low volume of the conjunctival sac. In this study, chitosan (CS)/sulfobutylether-β-cyclodextrin (SBE-β-CD) based nanoparticles (NPs) with a mean diameter of 340 (±7) nm, a ζ-potential value of +18.3 (±0.5) mV and coated with thiolated low molecular weight hyaluronic acid were formulated to improve both the solubility and the residential time in the conjunctival sac of the loaded drug IND. The NPs were prepared through the ionotropic gelation technique, exploiting the interaction between the positively charged amino group of CS and the negatively charged sulfonic group of SBE-β-CD. The mucoadhesive properties of the NPs were evaluated on chicken trachea and esophagus tissues using a texture analyser. The irritability effects of NPs were disclaimed with Hecam test. The developed coated NPs showed increased residential time in the conjunctival sac, displayed no irritancy or toxicity for local administration, making them an optimal and innovative drug delivery system for the treatment of anterior segment inflammation diseases. On the other hand, the uncoated NPs displayed better permeating properties since they are smaller and could be further exploited for the treatment of posterior segment diseases.
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Affiliation(s)
- Fabrizio Ricci
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari "Aldo Moro", 70125 Bari, Italy; Department of Pharmaceutical Technology, University of Innsbruck, Institute of Pharmacy, Center for Chemistry and Biomedicine, 6020 Innsbruck, Austria
| | | | - Angela Lopedota
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari "Aldo Moro", 70125 Bari, Italy
| | - Valentino Laquintana
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari "Aldo Moro", 70125 Bari, Italy
| | - Ilaria Arduino
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari "Aldo Moro", 70125 Bari, Italy
| | - Antonio Lopalco
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari "Aldo Moro", 70125 Bari, Italy
| | - Annalisa Cutrignelli
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari "Aldo Moro", 70125 Bari, Italy
| | - Massimo Franco
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari "Aldo Moro", 70125 Bari, Italy
| | | | - Nunzio Denora
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari "Aldo Moro", 70125 Bari, Italy.
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