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Wang TJ, Rethi L, Ku MY, Nguyen HT, Chuang AEY. A review on revolutionizing ophthalmic therapy: Unveiling the potential of chitosan, hyaluronic acid, cellulose, cyclodextrin, and poloxamer in eye disease treatments. Int J Biol Macromol 2024; 273:132700. [PMID: 38879998 DOI: 10.1016/j.ijbiomac.2024.132700] [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: 08/21/2023] [Revised: 05/24/2024] [Accepted: 05/26/2024] [Indexed: 06/18/2024]
Abstract
Ocular disorders, encompassing both common ailments like dry eye syndrome and more severe situations for instance age-related macular degeneration, present significant challenges to effective treatment due to the intricate architecture and physiological barriers of the eye. Polysaccharides are emerging as potential solutions for drug delivery to the eyes due to their compatibility with living organisms, natural biodegradability, and adhesive properties. In this review, we explore not only the recent advancements in polysaccharide-based technologies and their transformative potential in treating ocular illnesses, offering renewed optimism for both patients and professionals but also anatomy of the eye and the significant obstacles hindering drug transportation, followed by an investigation into various drug administration methods and their ability to overcome ocular-specific challenges. Our focus lies on biological adhesive polymers, including chitosan, hyaluronic acid, cellulose, cyclodextrin, and poloxamer, known for their adhesive characteristics enhancing drug retention on ocular surfaces and increasing bioavailability. A detailed analysis of material designs used in ophthalmic formulations, such as gels, lenses, eye drops, nanofibers, microneedles, microspheres, and nanoparticles, their advantages and limitations, the potential of formulations in improving therapeutic outcomes for various eye conditions. Moreover, we underscore the discovery of novel polysaccharides and their potential uses in ocular drug delivery.
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Affiliation(s)
- Tsung-Jen Wang
- Department of Ophthalmology, Taipei Medical University Hospital, Taipei 11031, Taiwan; Department of Ophthalmology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Lekshmi Rethi
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, New Taipei City, Taiwan; International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, New Taipei City, Taiwan
| | - Min-Yi Ku
- School of Biomedical Engineering, Taipei Medical University, New Taipei City, Taiwan
| | - Hieu Trung Nguyen
- Department of Orthopedics and Trauma, Faculty of Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City 700000, Viet Nam
| | - Andrew E-Y Chuang
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, New Taipei City, Taiwan; International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, New Taipei City, Taiwan; Cell Physiology and Molecular Image Research Center, Taipei Medical University-Wan Fang Hospital, Taipei 11696, Taiwan.
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2
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Cimino C, Sánchez López E, Bonaccorso A, Bonilla L, Musumeci T, Badia J, Baldomà L, Pignatello R, Marrazzo A, Barbaraci C, García ML, Carbone C. In vitro and in vivo studies of ocular topically administered NLC for the treatment of uveal melanoma. Int J Pharm 2024; 660:124300. [PMID: 38851409 DOI: 10.1016/j.ijpharm.2024.124300] [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: 02/16/2024] [Revised: 05/08/2024] [Accepted: 05/31/2024] [Indexed: 06/10/2024]
Abstract
Uveal melanoma is one of the most common and aggressive intraocular malignancies, and, due to its great capability of metastasize, it constitutes the most incident intraocular tumor in adults. However, to date there is no effective treatment since achieving the inner ocular tissues still constitutes one of the greatest challenges in actual medicine, because of the complex structure and barriers. Uncoated and PEGylated nanostructured lipid carriers were developed to achieve physico-chemical properties (mean particle size, homogeneity, zeta potential, pH and osmolality) compatible for the ophthalmic administration of (S)-(-)-MRJF22, a new custom-synthetized prodrug for the potential treatment of uveal melanoma. The colloidal physical stability was investigated at different temperatures by Turbiscan® Ageing Station. Morphology analysis and mucoadhesive studies highlighted the presence of small particles suitable to be topically administered on the ocular surface. In vitro release studies performed using Franz diffusion cells demonstrated that the systems were able to provide a slow and prolonged prodrug release. In vitro cytotoxicity test on Human Corneal Epithelium and Human Uveal Melanoma cell lines and Hen's egg-chorioallantoic membrane test showed a dose-dependent cytotoxic effect of the free prodrug on corneal cells, whose cytocompatibility improved when encapsulated into nanoparticles, as also confirmed by in vivo studies on New Zealand albino rabbits. Antiangiogenic capability and preventive anti-inflammatory properties were also investigated on embryonated eggs and rabbits, respectively. Furthermore, preliminary in vivo biodistribution images of fluorescent nanoparticles after topical instillation in rabbits' eyes, suggested their ability to reach the posterior segment of the eye, as a promising strategy for the treatment of choroidal uveal melanoma.
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Affiliation(s)
- Cinzia Cimino
- PhD in Biotechnology, Department of Biomedical and Biotechnological Sciences, University of Catania, Via Santa Sofia 97, 95123 Catania, Italy; Laboratory of Drug Delivery Technology, Department of Drug and Health Sciences, University of Catania, Via Valdisavoia 5, 95123 Catania, Italy; Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028, Barcelona, Spain; NANOMED, Research Centre for Nanomedicine and Pharmaceutical Nanotechnology, University of Catania
| | - Elena Sánchez López
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028, Barcelona, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028, Barcelona, Spain; Unit of Synthesis and Biomedical Applications of Peptides, IQAC-CSIC, 08034, Barcelona, Spain
| | - Angela Bonaccorso
- Laboratory of Drug Delivery Technology, Department of Drug and Health Sciences, University of Catania, Via Valdisavoia 5, 95123 Catania, Italy; NANOMED, Research Centre for Nanomedicine and Pharmaceutical Nanotechnology, University of Catania
| | - Lorena Bonilla
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028, Barcelona, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028, Barcelona, Spain
| | - Teresa Musumeci
- Laboratory of Drug Delivery Technology, Department of Drug and Health Sciences, University of Catania, Via Valdisavoia 5, 95123 Catania, Italy; NANOMED, Research Centre for Nanomedicine and Pharmaceutical Nanotechnology, University of Catania
| | - Josefa Badia
- Department of Biochemistry and Physiology, Biochemistry and Biomolecular Science, University of Barcelona, 08028 Barcelona, Spain; Institute of Biomedicine of the University of Barcelona (IBUB), 08028 Barcelona, Spain; Research Institute Sant Joan De Déu (IR-SJD), 08950 Barcelona, Spain
| | - Laura Baldomà
- Department of Biochemistry and Physiology, Biochemistry and Biomolecular Science, University of Barcelona, 08028 Barcelona, Spain; Institute of Biomedicine of the University of Barcelona (IBUB), 08028 Barcelona, Spain; Research Institute Sant Joan De Déu (IR-SJD), 08950 Barcelona, Spain
| | - Rosario Pignatello
- Laboratory of Drug Delivery Technology, Department of Drug and Health Sciences, University of Catania, Via Valdisavoia 5, 95123 Catania, Italy; NANOMED, Research Centre for Nanomedicine and Pharmaceutical Nanotechnology, University of Catania
| | - Agostino Marrazzo
- Unit of Synthesis and Biomedical Applications of Peptides, IQAC-CSIC, 08034, Barcelona, Spain; Medicinal Chemistry Laboratory, Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95124 Catania, Italy
| | - Carla Barbaraci
- Medicinal Chemistry Laboratory, Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95124 Catania, Italy; Present address: Laboratory of Medicinal Chemistry (CSIC Associated Unit), Faculty of Pharmacy and Food Sciences, and Institute of Biomedicine (IBUB), University of Barcelona, Av. Joan XXIII, 27-31, 08028 Barcelona, Spain
| | - María Luisa García
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028, Barcelona, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028, Barcelona, Spain
| | - Claudia Carbone
- Laboratory of Drug Delivery Technology, Department of Drug and Health Sciences, University of Catania, Via Valdisavoia 5, 95123 Catania, Italy; NANOMED, Research Centre for Nanomedicine and Pharmaceutical Nanotechnology, University of Catania.
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3
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Bisen AC, Srivastava S, Mishra A, Sanap SN, Biswas A, Choudhury AD, Dubey A, Gupta NM, Yadav KS, Mugale MN, Bhatta RS. Pharmaceutical Emulsions: A Viable Approach for Ocular Drug Delivery. J Ocul Pharmacol Ther 2024; 40:261-280. [PMID: 38654153 DOI: 10.1089/jop.2023.0166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024] Open
Affiliation(s)
- Amol Chhatrapati Bisen
- Pharmaceutics and Pharmacokinetics Division, Lucknow, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Saurabh Srivastava
- Pharmaceutics and Pharmacokinetics Division, Lucknow, Uttar Pradesh, India
| | - Anjali Mishra
- Pharmaceutics and Pharmacokinetics Division, Lucknow, Uttar Pradesh, India
| | - Sachin Nashik Sanap
- Pharmaceutics and Pharmacokinetics Division, Lucknow, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Arpon Biswas
- Pharmaceutics and Pharmacokinetics Division, Lucknow, Uttar Pradesh, India
| | | | - Ayush Dubey
- Pharmaceutics and Pharmacokinetics Division, Lucknow, Uttar Pradesh, India
| | - Neeraj Mohan Gupta
- Department of Chemistry, Government P. G. College, Guna, Madhya Pradesh, India
| | - Karan Singh Yadav
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
- Division of Toxicology and Experimental Medicine; CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Madhav Nilakanth Mugale
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
- Division of Toxicology and Experimental Medicine; CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Rabi Sankar Bhatta
- Pharmaceutics and Pharmacokinetics Division, Lucknow, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
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4
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Gao Q, Chu X, Yang J, Guo Y, Guo H, Qian S, Yang Y, Wang B. An Antibiotic Nanobomb Constructed from pH-Responsive Chemical Bonds in Metal-Phenolic Network Nanoparticles for Biofilm Eradication and Corneal Ulcer Healing. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309086. [PMID: 38488341 PMCID: PMC11165475 DOI: 10.1002/advs.202309086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 02/13/2024] [Indexed: 06/12/2024]
Abstract
In the treatment of refractory corneal ulcers caused by Pseudomonas aeruginosa, antibacterial drugs delivery faces the drawbacks of low permeability and short ocular surface retention time. Hence, novel positively-charged modular nanoparticles (NPs) are developed to load tobramycin (TOB) through a one-step self-assembly method based on metal-phenolic network and Schiff base reaction using 3,4,5-trihydroxybenzaldehyde (THBA), ε-poly-ʟ-lysine (EPL), and Cu2+ as matrix components. In vitro antibacterial test demonstrates that THBA-Cu-TOB NPs exhibit efficient instantaneous sterilization owing to the rapid pH responsiveness to bacterial infections. Notably, only 2.6 µg mL-1 TOP is needed to eradicate P. aeruginosa biofilm in the nano-formed THBA-Cu-TOB owing to the greatly enhanced penetration, which is only 1.6% the concentration of free TOB (160 µg mL-1). In animal experiments, THBA-Cu-TOB NPs show significant advantages in ocular surface retention, corneal permeability, rapid sterilization, and inflammation elimination. Based on molecular biology analysis, the toll-like receptor 4 and nuclear factor kappa B signaling pathways are greatly downregulated as well as the reduction of inflammatory cytokines secretions. Such a simple and modular strategy in constructing nano-drug delivery platform offers a new idea for toxicity reduction, physiological barrier penetration, and intelligent drug delivery.
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Affiliation(s)
- Qiang Gao
- National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325000P. R. China
- State Key Laboratory of Ophthalmology, Optometry and Visual ScienceWenzhou Medical UniversityWenzhou325027P. R. China
| | - Xiaoying Chu
- National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325000P. R. China
| | - Jie Yang
- School of Life SciencesJilin University2699 Qianjin StreetChangchun130012P. R. China
| | - Yishun Guo
- National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325000P. R. China
| | - Hanwen Guo
- National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325000P. R. China
| | - Siyuan Qian
- National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325000P. R. China
| | - Ying‐Wei Yang
- College of ChemistryJilin University2699 Qianjin StreetChangchun130012P. R. China
| | - Bailiang Wang
- National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325000P. R. China
- State Key Laboratory of Ophthalmology, Optometry and Visual ScienceWenzhou Medical UniversityWenzhou325027P. R. China
- NMPA Key Laboratory for Clinical Research and Evaluation of Medical Devices and Drug for Ophthalmic DiseasesWenzhou325027P. R. China
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5
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Ge Z, Long L, Zhang F, Dong R, Chen Z, Tang S, Yang L, Wang Y. Development of an injectable oxidized dextran/gelatin hydrogel capable of promoting the healing of alkali burn-associated corneal wounds. Int J Biol Macromol 2024; 273:132740. [PMID: 38825267 DOI: 10.1016/j.ijbiomac.2024.132740] [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: 09/07/2023] [Revised: 05/22/2024] [Accepted: 05/27/2024] [Indexed: 06/04/2024]
Abstract
The cornea serves as an essential shield that protects the underlying eye from external conditions, yet it remains highly vulnerable to injuries that could lead to blindness and scarring if not promptly and effectively treated. Excessive inflammatory response constitute the primary cause of pathological corneal injury. This study aimed to develop effective approaches for enabling the functional repair of corneal injuries by combining nanoparticles loaded with anti-inflammatory agents and an injectable oxidized dextran/gelatin/borax hydrogel. The injectability and self-healing properties of developed hydrogels based on borate ester bonds and dynamic Schiff base bonds were excellent, improving the retention of administered drugs on the ocular surface. In vitro cellular assays and in vivo animal studies collectively substantiated the proficiency of probucol nanoparticle-loaded hydrogels to readily suppress proinflammatory marker expression and to induce the upregulation of anti-inflammatory mediators, thereby supporting rapid repair of rat corneal tissue following alkali burn-induced injury. As such, probucol nanoparticle-loaded hydrogels represent a prospective avenue to developing long-acting and efficacious therapies for ophthalmic diseases.
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Affiliation(s)
- Zhengwei Ge
- Aier Eye Hospital, Jinan University, Guangzhou, Guangdong Province 510071, China; Changsha Aier Eye Hospital, Changsha, Hunan Province 410000, China
| | - Linyu Long
- Aier Academy of Ophthalmology, Central South University, Changsha, Hunan 410009, China; Aier Eye Institute, Aier Eye Hospital Group, Changsha, Hunan Province 410035, China; National Engineering Research Center for Biomaterials, Chuanda-Jinbo Joint Research Center, Sichuan University, Chengdu, 610064, China; Eye Center of Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Fanjun Zhang
- National Engineering Research Center for Biomaterials, Chuanda-Jinbo Joint Research Center, Sichuan University, Chengdu, 610064, China
| | - Ruiqi Dong
- National Engineering Research Center for Biomaterials, Chuanda-Jinbo Joint Research Center, Sichuan University, Chengdu, 610064, China
| | - Zhongping Chen
- Aier Eye Hospital, Jinan University, Guangzhou, Guangdong Province 510071, China; Changsha Aier Eye Hospital, Changsha, Hunan Province 410000, China; Aier Academy of Ophthalmology, Central South University, Changsha, Hunan 410009, China; School of Stomatology and Ophthalmology, Xianning Medical College, Hubei University of Science and Technology, Xianning, Hubei Province, China.
| | - Shibo Tang
- Changsha Aier Eye Hospital, Changsha, Hunan Province 410000, China; Aier Academy of Ophthalmology, Central South University, Changsha, Hunan 410009, China; Aier Eye Institute, Aier Eye Hospital Group, Changsha, Hunan Province 410035, China.
| | - Li Yang
- National Engineering Research Center for Biomaterials, Chuanda-Jinbo Joint Research Center, Sichuan University, Chengdu, 610064, China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Chuanda-Jinbo Joint Research Center, Sichuan University, Chengdu, 610064, China
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6
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Al-Bassam L, Shearman GC, Brocchini S, Alany RG, Williams GR. The Potential of Selenium-Based Therapies for Ocular Oxidative Stress. Pharmaceutics 2024; 16:631. [PMID: 38794293 PMCID: PMC11125443 DOI: 10.3390/pharmaceutics16050631] [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: 03/27/2024] [Revised: 04/26/2024] [Accepted: 05/01/2024] [Indexed: 05/26/2024] Open
Abstract
Oxidative stress plays a critical role in the development of chronic ocular conditions including cataracts, age-related macular degeneration, and diabetic retinopathy. There is a need to explore the potential of topical antioxidants to slow the progression of those conditions by mediating oxidative stress and maintaining ocular health. Selenium has attracted considerable attention because it is a component of selenoproteins and antioxidant enzymes. The application of selenium to a patient can increase selenoprotein expression, counteracting the effect of reactive oxygen species by increasing the presence of antioxidant enzymes, and thus slowing the progression of chronic ocular disorders. Oxidative stress effects at the biomolecular level for prevalent ocular conditions are described in this review along with some of the known defensive mechanisms, with a focus on selenoproteins. The importance of selenium in the eye is described, along with a discussion of selenium studies and uses. Selenium's antioxidant and anti-inflammatory qualities may prevent or delay eye diseases. Recent breakthroughs in drug delivery methods and nanotechnology for selenium-based ocular medication delivery are enumerated. Different types of selenium may be employed in formulations aimed at managing ocular oxidative stress conditions.
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Affiliation(s)
- Lulwah Al-Bassam
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK; (L.A.-B.); (S.B.)
| | - Gemma C. Shearman
- School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Penrhyn Rd, Kingston upon Thames KT1 2EE, UK; (G.C.S.); (R.G.A.)
| | - Steve Brocchini
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK; (L.A.-B.); (S.B.)
| | - Raid G. Alany
- School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Penrhyn Rd, Kingston upon Thames KT1 2EE, UK; (G.C.S.); (R.G.A.)
- School of Pharmacy, The University of Auckland, Auckland 1142, New Zealand
| | - Gareth R. Williams
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK; (L.A.-B.); (S.B.)
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Farahmandnejad M, Alipour S, Nokhodchi A. Physical and mechanical properties of ocular thin films: a systematic review and meta-analysis. Drug Discov Today 2024; 29:103964. [PMID: 38552779 DOI: 10.1016/j.drudis.2024.103964] [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: 01/19/2024] [Revised: 03/11/2024] [Accepted: 03/22/2024] [Indexed: 04/07/2024]
Abstract
The ocular thin film presents a potential solution for addressing challenges to ocular drug delivery. In this review, we summarise the findings of a comprehensive review analysing 336 formulations from 68 studies. We investigated the physical and mechanical properties of ocular thin films, categorised into natural polymer-based, synthetic polymer-based, and combined polymer films. The results showed that the type of polymers used impacted mucoadhesion force, moisture absorption:moisture loss ratio, pH, swelling index, and elongation percentage. Significant relationships were found between these properties within each subgroup. The results also highlighted the influence of plasticisers on elongation percentage, mucoadhesion force, swelling index, and moisture absorption:moisture loss ratio. These findings have implications for designing and optimising ocular drug formulations and selecting appropriate plasticisers to achieve formulations with the desired properties.
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Affiliation(s)
- Mitra Farahmandnejad
- Department of Drug & Food Quality Control, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Shohreh Alipour
- Department of Drug & Food Quality Control, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Ali Nokhodchi
- School of Life Sciences, University of Sussex, Brighton, UK; Lupin Research Inc, Coral Springs, FL, USA.
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Padalhin A, Abueva C, Ryu HS, Yoo SH, Seo HH, Park SY, Chung PS, Woo SH. Impact of Thermo-Responsive N-Acetylcysteine Hydrogel on Dermal Wound Healing and Oral Ulcer Regeneration. Int J Mol Sci 2024; 25:4835. [PMID: 38732054 PMCID: PMC11084650 DOI: 10.3390/ijms25094835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/19/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
This study investigates the efficacy of a thermo-responsive N-acetylcysteine (NAC) hydrogel on wound healing and oral ulcer recovery. Formulated by combining NAC with methylcellulose, the hydrogel's properties were assessed for temperature-induced gelation and cell viability using human fibroblast cells. In vivo experiments on Sprague Dawley rats compared the hydrogel's effects against saline, NAC solution, and a commercial NAC product. Results show that a 5% NAC and 1% methylcellulose solution exhibited optimal outcomes. While modest improvements in wound healing were observed, significant enhancements were noted in oral ulcer recovery, with histological analyses indicating fully regenerated mucosal tissue. The study concludes that modifying viscosity enhances NAC retention, facilitating tissue regeneration. These findings support previous research on the beneficial effects of antioxidant application on damaged tissues, suggesting the potential of NAC hydrogels in improving wound care and oral ulcer treatment.
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Affiliation(s)
- Andrew Padalhin
- Beckman Laser Institute Korea, College of Medicine, Dankook University, Cheonan 31116, Republic of Korea; (A.P.); (C.A.); (H.S.R.); (S.Y.P.); (P.-S.C.)
| | - Celine Abueva
- Beckman Laser Institute Korea, College of Medicine, Dankook University, Cheonan 31116, Republic of Korea; (A.P.); (C.A.); (H.S.R.); (S.Y.P.); (P.-S.C.)
- Medical Laser Research Center, Dankook University, Cheonan 31116, Republic of Korea
| | - Hyun Seok Ryu
- Beckman Laser Institute Korea, College of Medicine, Dankook University, Cheonan 31116, Republic of Korea; (A.P.); (C.A.); (H.S.R.); (S.Y.P.); (P.-S.C.)
| | - Seung Hyeon Yoo
- School of Medical Lasers, Dankook University, Cheonan 31116, Republic of Korea; (S.H.Y.); (H.H.S.)
| | - Hwee Hyon Seo
- School of Medical Lasers, Dankook University, Cheonan 31116, Republic of Korea; (S.H.Y.); (H.H.S.)
| | - So Young Park
- Beckman Laser Institute Korea, College of Medicine, Dankook University, Cheonan 31116, Republic of Korea; (A.P.); (C.A.); (H.S.R.); (S.Y.P.); (P.-S.C.)
| | - Phil-Sang Chung
- Beckman Laser Institute Korea, College of Medicine, Dankook University, Cheonan 31116, Republic of Korea; (A.P.); (C.A.); (H.S.R.); (S.Y.P.); (P.-S.C.)
- Medical Laser Research Center, Dankook University, Cheonan 31116, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Dankook University, Cheonan 31116, Republic of Korea
| | - Seung Hoon Woo
- Beckman Laser Institute Korea, College of Medicine, Dankook University, Cheonan 31116, Republic of Korea; (A.P.); (C.A.); (H.S.R.); (S.Y.P.); (P.-S.C.)
- Medical Laser Research Center, Dankook University, Cheonan 31116, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Dankook University, Cheonan 31116, Republic of Korea
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9
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Said M, Elsayed I, Aboelwafa AA, Elshafeey AH, Hassan M. Ocular Mucoadhesive and Biodegradable Sponge-Like Inserts for the Sustained and Controlled Delivery of Voriconazole; Preparation, D-optimal Factorial Optimization and in-vivo Evaluation. J Pharm Sci 2024; 113:961-973. [PMID: 37949171 DOI: 10.1016/j.xphs.2023.09.026] [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: 05/13/2023] [Revised: 09/30/2023] [Accepted: 09/30/2023] [Indexed: 11/12/2023]
Abstract
The aim of this study was to formulate and optimize by statistical means mucoadhesive and biodegradable sponge-like inserts loaded with voriconazole (VCZ) which increases the contact time of the drug with the eye and sustain its release from the formula in a controlled manner. This avoids the pulsed effect reported for the drug suspension and results in reducing the number of drug instillations in the eye with the result of enhancing the patient compliance. Also, the sponge like nature of the insert reduces the foreign body sensation caused by other ocular solid dosage forms. They were prepared using casting/freeze-drying technique using five polymers namely high molecular weight chitosan (CH), sodium alginate (AL), sodium carboxy methyl cellulose (CMC), gellan gum (GG) and xanthan gum (XG). The prepared inserts were subjected to evaluations of their visual appearance, weight variation, drug content, surface pH, in-vitro release (percent drug released after 1h (Q1 (%)), mean dissolution time (MDT) and dissolution efficiency (DE)) in addition to kinetic analysis of the release data, water uptake, mucoadhesion and rheology of the forming plain polymer solution at the maximum rate of shear. The independent variables of the D-optimal factorial design were the polymer type and concentration while Q1 (%), MDT, DE, % water uptake after 15 minutes and rheology at the maximum rate of shear were chosen as dependant variables. The performed optimization process using design expert software showed an optimum formula consisting of 2 % GG. It showed slow release behavior compared to the drug suspension. FTIR and DSC studies showed that there is no interaction between VCZ and GG. The optimum formula has good in-vitro mucoadhesive properties and pH in the safe ocular range. Moreover, it showed promising in-vivo results of rapid hydration and gelling in addition to good mucoadhesive behavior when instilled in the eye, high ocular safety and biocompatibility, sustained antifungal activity in comparison to the drug suspension and finally biodegradation. So, it may be taken into consideration as an outstanding carrier for the ocular delivery of VCZ.
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Affiliation(s)
- Mayada Said
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Ibrahim Elsayed
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt; Department of Pharmaceutical Sciences, College of Pharmacy and Thumbay Research Institute for Precision Medicine, Gulf Medical University, Ajman, UAE
| | - Ahmed A Aboelwafa
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Ahmed H Elshafeey
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Mariam Hassan
- Department of Microbiology and immunology, Faculty of Pharmacy, Cairo University, Cairo, Egypt; Department of Microbiology and Immunology, Faculty of Pharmacy, Galala University, New Galala City, Suez, Egypt
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10
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Ch S, Paul M, Padaga SG, Ghosh B, Biswas S. Cationized gelatin-sodium alginate polyelectrolyte nanoparticles encapsulating moxifloxacin as an eye drop to treat bacterial keratitis. Int J Biol Macromol 2024; 264:130457. [PMID: 38432265 DOI: 10.1016/j.ijbiomac.2024.130457] [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: 09/04/2023] [Revised: 02/16/2024] [Accepted: 02/24/2024] [Indexed: 03/05/2024]
Abstract
A mucoadhesive polyelectrolyte complex (PEC) nanoparticles were developed for ocular moxifloxacin (Mox) delivery in Bacterial Keratitis (BK). Moxifloxacin-loaded G/CG-Alg NPs were prepared by an amalgamation of cationic polymers (gelatin (G)/cationized gelatin (CG)), and anionic polymer (sodium alginate (Alg)) along with Mox respectively. Mox@CG-Alg NPs were characterized for physicochemical parameters such as particle size (DLS technique), morphology (SEM analysis), DSC, XRD, encapsulation efficiency, drug loading, mucoadhesive study (by texture analyzer), mucin turbidity, and viscosity assessment. The NPs uptake and toxicity of the formulation were analyzed in the Human Corneal Epithelial (HCE) cell line and an ocular irritation study was performed on the HET-CAM. The results indicated that the CG-Alg NPs, with optimal size (217.2 ± 4 nm) and polydispersity (0.22 ± 0.05), have shown high cellular uptake in monolayer and spheroids of HCE. The drug-loaded formulation displayed mucoadhesiveness, trans-corneal permeation, and sustained the release of the Mox. The anti-bacterial efficacy studied on planktonic bacteria/biofilms of P. aeruginosa and S. aureus (in vitro) indicated that the Mox@CG-Alg NPs displayed low MIC, higher zone of bacterial growth inhibition, and cell death compared to free Mox. A significant reduction of bacterial load was observed in the BK-induced mouse model.
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Affiliation(s)
- Sanjay Ch
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, Telangana, India
| | - Milan Paul
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, Telangana, India
| | - Sri Ganga Padaga
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, Telangana, India
| | - Balaram Ghosh
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, Telangana, India
| | - Swati Biswas
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, Telangana, India.
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11
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Latham SG, Williams RL, Grover LM, Rauz S. Achieving net-zero in the dry eye disease care pathway. Eye (Lond) 2024; 38:829-840. [PMID: 37957294 DOI: 10.1038/s41433-023-02814-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 09/27/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
Climate change is a threat to human health and wellbeing across the world. In recent years, there has been a surge in awareness of this crisis, leading to many countries and organisations setting "net-zero" targets. This entails minimising carbon emissions and neutralising remaining emissions by removing carbon from the atmosphere. At the 2022 United Nations Climate Change Conference (COP27), commitments to transition away from fossil fuels and augment climate targets were underwhelming. It is therefore imperative for public and private sector organisations to demonstrate successful implementation of net-zero and set a precedent for the global political consensus. As a top 10 world employer, the United Kingdom National Health Service (NHS) has pledged to reach net-zero by 2045. The NHS has already taken positive steps forward, but its scale and complexity as a health system means stakeholders in each of its services must highlight the specifications for further progress. Dry eye disease is a chronic illness with an estimated global prevalence of 29.5% and an environmentally damaging care pathway. Moreover, environmental damage is a known aggravator of dry eye disease. Worldwide management of this illness generates copious amounts of non-recyclable waste, utilises inefficient supply chains and involves recurrent follow-up appointments and prescriptions. By mapping the dry eye disease care pathway to environmental impact, in this review we will highlight seven key areas in which reduced emissions and pollution could be targeted. Examining these approaches for improved environmental sustainability is critical in driving the transformation needed to preserve our health and wellbeing.
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Affiliation(s)
- Samuel G Latham
- Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Birmingham and Midland Eye Centre, Sandwell and West Birmingham NHS Trust, Birmingham, UK
| | - Richard L Williams
- School of Chemical Engineering, College of Engineering and Physical Sciences, University of Birmingham, Birmingham, UK
- Healthcare Technologies Institute, University of Birmingham, Birmingham, UK
| | - Liam M Grover
- School of Chemical Engineering, College of Engineering and Physical Sciences, University of Birmingham, Birmingham, UK
- Healthcare Technologies Institute, University of Birmingham, Birmingham, UK
| | - Saaeha Rauz
- Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.
- Birmingham and Midland Eye Centre, Sandwell and West Birmingham NHS Trust, Birmingham, UK.
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12
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Li Z, Huang W, Zhang M, Huo Y, Li F, Song L, Wu S, Yang Q, Li X, Zhang J, Yang L, Hao J, Kang L. Minocycline-loaded nHAP/PLGA microspheres for prevention of injury-related corneal angiogenesis. J Nanobiotechnology 2024; 22:134. [PMID: 38549081 PMCID: PMC10979583 DOI: 10.1186/s12951-024-02317-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 01/26/2024] [Indexed: 04/01/2024] Open
Abstract
BACKGROUND Corneal neovascularization (CoNV) threatens vision by disrupting corneal avascularity, however, current treatments, including pharmacotherapy and surgery, are hindered by limitations in efficacy and adverse effects. Minocycline, known for its anti-inflammatory properties, could suppress CoNV but faces challenges in effective delivery due to the cornea's unique structure. Therefore, in this study a novel drug delivery system using minocycline-loaded nano-hydroxyapatite/poly (lactic-co-glycolic acid) (nHAP/PLGA) nanoparticles was developed to improve treatment outcomes for CoNV. RESULTS Ultra-small nHAP was synthesized using high gravity technology, then encapsulated in PLGA by a double emulsion method to form nHAP/PLGA microspheres, attenuating the acidic by-products of PLGA degradation. The MINO@PLGA nanocomplex, featuring sustained release and permeation properties, demonstrated an efficient delivery system for minocycline that significantly inhibited the CoNV area in an alkali-burn model without exhibiting apparent cytotoxicity. On day 14, the in vivo microscope examination and ex vivo CD31 staining corroborated the inhibition of neovascularization, with the significantly smaller CoNV area (29.40% ± 6.55%) in the MINO@PLGA Tid group (three times daily) than that of the control group (86.81% ± 15.71%), the MINO group (72.42% ± 30.15%), and the PLGA group (86.87% ± 14.94%) (p < 0.05). Fluorescein sodium staining show MINO@PLGA treatments, administered once daily (Qd) and three times daily (Tid) demonstrated rapid corneal epithelial healing while the Alkali injury group and the DEX group showed longer healing times (p < 0.05). Additionally, compared to the control group, treatments with dexamethasone, MINO, and MINO@PLGA were associated with an increased expression of TGF-β as evidenced by immunofluorescence, while the levels of pro-inflammatory cytokines IL-1β and TNF-α demonstrated a significant decrease following alkali burn. Safety evaluations, including assessments of renal and hepatic biomarkers, along with H&E staining of major organs, revealed no significant cytotoxicity of the MINO@PLGA nanocomplex in vivo. CONCLUSIONS The novel MINO@PLGA nanocomplex, comprising minocycline-loaded nHAP/PLGA microspheres, has shown a substantial capacity for preventing CoNV. This study confirms the complex's ability to downregulate inflammatory pathways, significantly reducing CoNV with minimal cytotoxicity and high biosafety in vivo. Given these findings, MINO@PLGA stands as a highly promising candidate for ocular conditions characterized by CoNV.
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Affiliation(s)
- Zitong Li
- Department of Ophthalmology, Peking University First Hospital, Beijing, 100034, People's Republic of China
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Wenpeng Huang
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Ming Zhang
- Department of Pathology, Peking University International Hospital, Beijing, China
| | - Yan Huo
- Department of Ophthalmology, PLA Rocket Force Characteristic Medical Center, Beijing, China
| | - Feifei Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Lele Song
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Sitong Wu
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Qi Yang
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, 100034, People's Republic of China
| | - Xiaoming Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Jianjun Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
| | - Liu Yang
- Department of Ophthalmology, Peking University First Hospital, Beijing, 100034, People's Republic of China.
| | - Jianchen Hao
- Department of Ophthalmology, Peking University First Hospital, Beijing, 100034, People's Republic of China.
| | - Lei Kang
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, 100034, People's Republic of China.
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13
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Villapiano F, Silvestri T, Lo Gatto C, Aleo D, Campani V, Graziano SF, Giancola C, D'Aria F, De Rosa G, Biondi M, Mayol L. Thermosensitive In Situ Gelling Poloxamers/Hyaluronic Acid Gels for Hydrocortisone Ocular Delivery. Gels 2024; 10:193. [PMID: 38534611 DOI: 10.3390/gels10030193] [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: 08/02/2023] [Revised: 03/06/2024] [Accepted: 03/09/2024] [Indexed: 03/28/2024] Open
Abstract
This study endeavored to overcome the physiological barriers hindering optimal bioavailability in ophthalmic therapeutics by devising drug delivery platforms that allow therapeutically effective drug concentrations in ocular tissues for prolonged times. Thermosensitive drug delivery platforms were formulated by blending poloxamers (F68 and F127) with low-molecular-weight hyaluronic acid (HA) in various concentrations and loaded with hydrocortisone (HC). Among the formulations examined, only three were deemed suitable based on their desirable gelling properties at a temperature close to the eye's surface conditions while also ensuring minimal gelation time for swift ocular application. Rheological analyses unveiled the ability of the formulations to develop gels at suitable temperatures, elucidating the gel-like characteristics around the physiological temperature essential for sustained drug release. The differential scanning calorimetry findings elucidated intricate hydrogel-water interactions, indicating that HA affects the water-polymer interactions within the gel by increasing the platform hydrophilicity. Also, in vitro drug release studies demonstrated significant hydrocortisone release within 8 h, governed by an anomalous transport mechanism, prompting further investigation for optimized release kinetics. The produced platforms offer promising prospects for efficacious ocular drug delivery, addressing pivotal challenges in ocular therapeutics and heralding future advancements in the domain.
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Affiliation(s)
- Fabrizio Villapiano
- Department of Pharmacy, University of Naples Federico II, D. Montesano St. 49, 80131 Naples, Italy
| | - Teresa Silvestri
- Department of Pharmacy, University of Naples Federico II, D. Montesano St. 49, 80131 Naples, Italy
| | - Camilla Lo Gatto
- Department of Pharmacy, University of Naples Federico II, D. Montesano St. 49, 80131 Naples, Italy
| | - Danilo Aleo
- Medivis Srl, Carnazza St. 34/C, 95030 Tremestieri Etneo, Catania, Italy
| | - Virginia Campani
- Department of Pharmacy, University of Naples Federico II, D. Montesano St. 49, 80131 Naples, Italy
| | - Sossio Fabio Graziano
- Department of Pharmacy, University of Naples Federico II, D. Montesano St. 49, 80131 Naples, Italy
| | - Concetta Giancola
- Department of Pharmacy, University of Naples Federico II, D. Montesano St. 49, 80131 Naples, Italy
| | - Federica D'Aria
- Department of Pharmacy, University of Naples Federico II, D. Montesano St. 49, 80131 Naples, Italy
| | - Giuseppe De Rosa
- Department of Pharmacy, University of Naples Federico II, D. Montesano St. 49, 80131 Naples, Italy
| | - Marco Biondi
- Department of Pharmacy, University of Naples Federico II, D. Montesano St. 49, 80131 Naples, Italy
- Interdisciplinary Research Centre on Biomaterials (CRIB), Piazzale Tecchio 80, 80125 Naples, Italy
| | - Laura Mayol
- Interdisciplinary Research Centre on Biomaterials (CRIB), Piazzale Tecchio 80, 80125 Naples, Italy
- Department of Advanced Biomedical Sciences, University of Naples Federico II, S. Pansini St. 5, 80131 Naples, Italy
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14
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Ahmed T, Islam MN, Monalisa R, Ehsan F, Huang SW. Polysaccharides polymers for glaucoma treatment-a review. Eur J Ophthalmol 2024; 34:338-356. [PMID: 37231538 DOI: 10.1177/11206721231178057] [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] [Indexed: 05/27/2023]
Abstract
One of the major challenges in preventing glaucoma progression is patient compliance with medication regimens. Since conventional ophthalmic dosage forms have numerous limitations, researchers have been intensively working on developing polymers-based delivery systems for glaucoma drugs. Specifically, research and development efforts have increased using polysaccharide polymers such as sodium alginate, cellulose, β-cyclodextrin, hyaluronic acid, chitosan, pectin, gellan gum, galactomannans for sustained release to the eye to overcome treatment challenges, showing promise in improving drug release and delivery, patient experience, and treatment compliance. In the recent past, multiple research groups have successfully designed sustained drug delivery systems, promoting the efficacy as well as the feasibility of glaucoma drugs with single/combinations of polysaccharides to eliminate the drawbacks associated with the glaucoma treatment. Naturally available polysaccharides, when used as drug vehicles can increase the retention time of eye drops on the ocular surface, leading to improved drug absorption and bioavailability. Additionally, some polysaccharides can form gels or matrices that can release drugs slowly over time, providing sustained drug delivery and reducing the need for frequent dosing. Thus, this review aims to provide an overview of the pre-clinical and clinical studies of polysaccharide polymers applied for glaucoma treatment along with their therapeutic outcomes.
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Affiliation(s)
- Tanvir Ahmed
- Food Engineering & Tea Technology, Shahjalal University of Science & Technology, Sylhet 3114, Bangladesh
| | - Md Nazmul Islam
- Deaprtment of Microbiology, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Rina Monalisa
- Deaprtment of Microbiology, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Feroz Ehsan
- Department of Medicine, Aziz Fatimah Hospital, Faisalabad 38000, Pakistan
| | - Shu-Wei Huang
- Department of Orthopedics, Wan Fang Hospital, Taipei Medical University, Taipei 116, Taiwan
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15
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Csorba A, Katona G, Budai-Szűcs M, Balogh-Weiser D, Molnár P, Maka E, Kazsoki A, Vajna M, Zelkó R, Nagy ZZ, Balogh GT. A Comparative Pharmacokinetic Study for Cysteamine-Containing Eye Drops as an Orphan Topical Therapy in Cystinosis. Int J Mol Sci 2024; 25:1623. [PMID: 38338900 PMCID: PMC10855117 DOI: 10.3390/ijms25031623] [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: 01/02/2024] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
Cystinosis is a low-prevalence lysosomal storage disease. The pathomechanism involves abnormal functioning of the cystinosine lysosomal cystine transporter (CTNS), causing intraliposomal accumulation of the amino acid cysteine disulfide, which crystallizes and deposits in several parts of the body. The most common ophthalmic complication of cystinosis is the deposition of "gold dust" cystine crystals on the cornea, which already occurs in infancy and leads to severe photosensitivity and dry eyes as it gradually progresses with age. In the specific treatment of cystinosis, preparations containing cysteamine (CYA) are used. The availability of commercialized eyedrops for the targeted treatment is scarce, and only Cystadrops® are commercially available with strong limitations. Thus, magistral CYA-containing compounded eyedrops (CYA-CED) could have a key role in patient care; however, a rationally designed comprehensive study on the commercialized and magistral products is still missing. This work aims to build up a comprehensive study about commercialized and magistral CYA eye drops, involving pharmacokinetic and physicochemical characterization (applying mucoadhesivity, rheology test, investigation of drug release, and parallel artificial membrane permeability assays), as well as ex vivo tests, well supported by statistical analysis.
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Affiliation(s)
- Anita Csorba
- Department of Ophthalmology, Semmelweis University, Mária Street 39, H-1085 Budapest, Hungary
| | - Gábor Katona
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös Street 6, H-6720 Szeged, Hungary
| | - Mária Budai-Szűcs
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös Street 6, H-6720 Szeged, Hungary
| | - Diána Balogh-Weiser
- Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - Péter Molnár
- Molteam Llc., Mélyfúró Street 4, H-1151 Budapest, Hungary
| | - Erika Maka
- Department of Ophthalmology, Semmelweis University, Mária Street 39, H-1085 Budapest, Hungary
| | - Adrienn Kazsoki
- University Pharmacy Department of Pharmacy Administration, Semmelweis University, Hőgyes Endre Street 7-9, H-1092 Budapest, Hungary
| | - Márton Vajna
- University Pharmacy Department of Pharmacy Administration, Semmelweis University, Hőgyes Endre Street 7-9, H-1092 Budapest, Hungary
| | - Romána Zelkó
- University Pharmacy Department of Pharmacy Administration, Semmelweis University, Hőgyes Endre Street 7-9, H-1092 Budapest, Hungary
| | - Zoltán Zsolt Nagy
- Department of Ophthalmology, Semmelweis University, Mária Street 39, H-1085 Budapest, Hungary
| | - György T. Balogh
- Department of Pharmaceutical Chemistry, Semmelweis University, Hőgyes Endre Street 7-9, H-1092 Budapest, Hungary
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16
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Ashique S, Mishra N, Mohanto S, Gowda BJ, Kumar S, Raikar AS, Masand P, Garg A, Goswami P, Kahwa I. Overview of processed excipients in ocular drug delivery: Opportunities so far and bottlenecks. Heliyon 2024; 10:e23810. [PMID: 38226207 PMCID: PMC10788286 DOI: 10.1016/j.heliyon.2023.e23810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 01/17/2024] Open
Abstract
Ocular drug delivery presents a unique set of challenges owing to the complex anatomy and physiology of the eye. Processed excipients have emerged as crucial components in overcoming these challenges and improving the efficacy and safety of ocular drug delivery systems. This comprehensive overview examines the opportunities that processed excipients offer in enhancing drug delivery to the eye. By analyzing the current landscape, this review highlights the successful applications of processed excipients, such as micro- and nano-formulations, sustained-release systems, and targeted delivery strategies. Furthermore, this article delves into the bottlenecks that have impeded the widespread adoption of these excipients, including formulation stability, biocompatibility, regulatory constraints, and cost-effectiveness. Through a critical evaluation of existing research and industry practices, this review aims to provide insights into the potential avenues for innovation and development in ocular drug delivery, with a focus on addressing the existing challenges associated with processed excipients. This synthesis contributes to a deeper understanding of the promising role of processed excipients in improving ocular drug delivery systems and encourages further research and development in this rapidly evolving field.
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Affiliation(s)
- Sumel Ashique
- Department of Pharmaceutical Sciences, Bengal College of Pharmaceutical Sciences & Research, Durgapur 713212, West Bengal, India
| | - Neeraj Mishra
- Amity Institute of Pharmacy, Amity University Madhya Pradesh, Gwalior, 474005, India
| | - Sourav Mohanto
- Department of Pharmaceutics, Yenepoya Pharmacy College & Research Centre, Yenepoya (Deemed to Be University), Mangalore, 575018, India
| | - B.H. Jaswanth Gowda
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, Belfast BT9 7BL, UK
| | - Shubneesh Kumar
- Department of Pharmaceutics, Bharat Institute of Technology, School of Pharmacy, Meerut 250103, UP, India
| | - Amisha S. Raikar
- Department of Pharmaceutics, PES Rajaram and Tarabai Bandekar College of Pharmacy, Ponda, Goa 403401, India
| | - Priya Masand
- Department of Pharmaceutical Technology, Meerut Institute of Engineering & Technology, (MIET), NH-58, Delhi-Roorkee Highway, Meerut, Uttar Pradesh 250005, India
| | - Ashish Garg
- Department of Pharmaceutics, Guru Ramdas Khalsa Institute of Science and Technology (Pharmacy), Jabalpur, Madhya Pradesh, India
| | - Priyanka Goswami
- Department of Pharmacognosy, Saraswati Institute of Pharmaceutical Sciences, Gandhinagar 382355, Gujarat, India
- Maharashtra Educational Society's H.K. College of Pharmacy, Mumbai: 400102.India
| | - Ivan Kahwa
- Department of Pharmacy, Faculty of Medicine, Mbarara University of Science and Technology, P.O Box 1410, Mbarara, Uganda
- Pharm-Bio Technology and Traditional Medicine Centre, Mbarara University of Science and Technology, P. O Box 1410, Mbarara, Uganda
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17
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Mohan P, Rajeswari J, Kesavan K. Cationic microemulsion of voriconazole for the treatment of fungal keratitis: in vitro and in vivo evaluation. Ther Deliv 2024. [PMID: 38180042 DOI: 10.4155/tde-2023-0069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024] Open
Abstract
Aim: This investigation aimed to develop a voriconazole-loaded chitosan-coated cationic microemulsion (CVME) to treat fungal keratitis. Methods: Microemulsions were prepared using water titration, and the optimized microemulsion was coated with chitosan to prepare CVME. The physicochemical parameters, ocular irritation potential, in vitro antifungal efficacy and in vitro release studies were performed. The in vivo antifungal efficacy study was conducted in a fungal infection-induced rabbit eye model. Results: The developed CVME displayed acceptable physicochemical properties and excellent mucoadhesive behavior and showed a sustained release profile. Ex vivo and in vivo studies concluded that higher permeability and improved antifungal efficacy were observed for CVME than drug suspension (DS). Conclusion: The prepared CVME7 is a viable alternative to treating fungal keratitis with existing approaches.
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Affiliation(s)
- Parasuraman Mohan
- Department of Pharmacy, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, C.G., 495009, India
- Department of Pharmaceutics, Vellalar College of Pharmacy, Erode, Tamil Nadu, 638012, India
| | - Jothimani Rajeswari
- Department of Pharmacy, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, C.G., 495009, India
| | - Karthikeyan Kesavan
- Department of Pharmacy, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, C.G., 495009, India
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18
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Chomchalao P, Saelim N, Lamlertthon S, Sisopa P, Tiyaboonchai W. Mucoadhesive Hybrid System of Silk Fibroin Nanoparticles and Thermosensitive In Situ Hydrogel for Amphotericin B Delivery: A Potential Option for Fungal Keratitis Treatment. Polymers (Basel) 2024; 16:148. [PMID: 38201813 PMCID: PMC10780372 DOI: 10.3390/polym16010148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/24/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
The purpose of this work was to investigate the feasibility of a novel ophthalmic formulation of amphotericin B-encapsulated silk fibroin nanoparticles incorporated in situ hydrogel (AmB-FNPs ISG) for fungal keratitis (FK) treatment. AmB-FNPs ISG composites were successfully developed and have shown optimized physicochemical properties for ocular drug delivery. Antifungal effects against Candida albicans and in vitro ocular irritation using corneal epithelial cells were performed to evaluate the efficacy and safety of the composite formulations. The combined system of AmB-FNPs-ISG exhibited effective antifungal activity and showed significantly less toxicity to HCE cells than commercial AmB. In vitro and ex vivo mucoadhesive tests demonstrated that the combination of silk fibroin nanoparticles with in situ hydrogels could enhance the adhesion ability of the particles on the ocular surface for more than 6 h, which would increase the ocular retention time of AmB and reduce the frequency of administration during the treatment. In addition, AmB-FNP-PEG ISG showed good physical and chemical stability under storage condition for 90 days. These findings indicate that AmB-FNP-PEG ISG has a great potential and be used in mucoadhesive AmB eye drops for FK treatment.
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Affiliation(s)
- Pratthana Chomchalao
- Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok 65000, Thailand;
- College of Medicine and Public Health, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Nuttawut Saelim
- Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok 65000, Thailand
| | - Supaporn Lamlertthon
- Centre of Excellence in Fungal Research, Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok 65000, Thailand
| | - Premnapa Sisopa
- Department of Health and Cosmetic Product Development, Faculty of Food and Agricultural Technology, Pibulsongkram Rajabhat University, Phitsanulok 65000, Thailand
| | - Waree Tiyaboonchai
- Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok 65000, Thailand;
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19
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Omran S, Elnaggar YSR, Abdallah OY. Controlled release, chitosan-tethered luteolin phytocubosomes; Formulation optimization to in-vivo antiglaucoma and anti-inflammatory ocular evaluation. Int J Biol Macromol 2024; 254:127930. [PMID: 37944733 DOI: 10.1016/j.ijbiomac.2023.127930] [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: 08/17/2023] [Revised: 10/31/2023] [Accepted: 11/05/2023] [Indexed: 11/12/2023]
Abstract
A chitosan-coated luteolin-loaded phytocubosomal system was prepared to improve the pharmacodynamic performance of luteolin in the treatment of glaucoma and ocular inflammation after topical ocular administration. Luteolin, a potent anti-oxidant herbal drug with poor aqueous solubility, was complexed with phospholipid. The prepared phytocubosomes were coated with chitosan, producing homogenously distributed nanosized particles (258 ± 9.05 nm) with a positive charge (+49 ± 6.09 mV), improved EE% (96 %), and increased concentration of encapsulated drug to 288 μg/ml. Polarized light microscopy revealed a cubic phase. Chitosan-coated phytocubosomes showed a sustained drug release profile (38 % over 24 h) and improved anti-oxidant activity (IC50 of 32 μg/ml). Ex vivo transcorneal permeation was higher by 3.60 folds compared to luteolin suspension. Irritancy tests confirmed their safety in ocular tissues after single and multiple administrations. The pharmacodynamic studies on glaucomatous rabbit eyes demonstrated 6.46-, 3.88-, and 1.89-fold reductions in IOP of chitosan-coated phytocubosomes compared to luteolin suspension, cubosomes, and phytocubosomes, respectively. Pharmacodynamic anti-inflammatory studies revealed faster recovery capabilities of chitosan-coated phytocubosomes over other formulations. Thus, chitosan-coated phytocubosomes could be a promising ocular hybrid system for delivering herbal lipophilic drugs such as luteolin.
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Affiliation(s)
- Sarah Omran
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt
| | - Yosra S R Elnaggar
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt; Head of International Publication & Nanotechnology Consultation Center (INCC), Faculty of Pharmacy, Pharos University in Alexandria, Egypt.
| | - Ossama Y Abdallah
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt
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20
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Omran S, Elnaggar YSR, Abdallah OY. Carrageenan tethered ion sensitive smart nanogel containing oleophytocubosomes for improved ocular luteolin delivery. Int J Pharm 2023; 646:123482. [PMID: 37802260 DOI: 10.1016/j.ijpharm.2023.123482] [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: 06/03/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 10/08/2023]
Abstract
Ophthalmic delivery of luteolin (LU) was studied after formulating a carrageenan-based novel ion-sensitive in situ gel (ISG) incorporating oleophytocubosomes for prolonged ocular residence time and improved ocular bioavailability of the poorly absorbed herbal drug luteolin. The prepared oleophytocubosomes and ISG were compared with LU suspension. Optimized oleophytocubosomes possessed small, homogenously distributed negatively charged particles with high entrapment efficiency. Polarized light microscope revealed a cubic phase. Optimized ISG matrix composed of 0.4% kappa carrageenan (KC), and 2% hydroxypropylmethylcellulose (HPMC) demonstrated rapid gelation, high resistance to dilution, increased viscosity after gelation, and strong mucoadhesive properties. oleophytocubosomes exerted improved drug release, while a more sustained release was observed for ISG oleophytocubosomes. The antioxidant activity of both formulations was significantly higher than that of LU suspension. Oleophytocubosome and ISG oleophytocubosome revealed significantly higher apparent permeability coefficients of 3.62 and 2.90 folds, respectively, compared to LU suspension. Irritation tests showed the safety of both formulations for single- and multiple-ocular administration. In-vivo studies demonstrated that the ISG system showed prolonged antiglaucoma effects and a faster anti-inflammatory effect, followed by oleophytocubosomes.
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Affiliation(s)
- Sarah Omran
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt
| | - Yosra S R Elnaggar
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt; Head of International-Publishing and Nanotechnology Consultation Center INCC, Pharos University in Alexandria, Egypt.
| | - Ossama Y Abdallah
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt
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21
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Abla KK, Mehanna MM. Lipid-based nanocarriers challenging the ocular biological barriers: Current paradigm and future perspectives. J Control Release 2023; 362:70-96. [PMID: 37591463 DOI: 10.1016/j.jconrel.2023.08.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 08/09/2023] [Accepted: 08/10/2023] [Indexed: 08/19/2023]
Abstract
Eye is the most specialized and sensory body organ and treating eye diseases efficiently is necessary. Despite various attempts, the design of a consummate ophthalmic drug delivery system remains unsolved because of anatomical and physiological barriers that hinder drug transport into the desired ocular tissues. It is important to advance new platforms to manage ocular disorders, whether they exist in the anterior or posterior cavities. Nanotechnology has piqued the interest of formulation scientists because of its capability to augment ocular bioavailability, control drug release, and minimize inefficacious drug absorption, with special attention to lipid-based nanocarriers (LBNs) because of their cellular safety profiles. LBNs have greatly improved medication availability at the targeted ocular site in the required concentration while causing minimal adverse effects on the eye tissues. Nevertheless, the exact mechanisms by which lipid-based nanocarriers can bypass different ocular barriers are still unclear and have not been discussed. Thus, to bridge this gap, the current work aims to highlight the applications of LBNs in the ocular drug delivery exploring the different ocular barriers and the mechanisms viz. adhesion, fusion, endocytosis, and lipid exchange, through which these platforms can overcome the barrier characteristics challenges.
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Affiliation(s)
- Kawthar K Abla
- Pharmaceutical Nanotechnology Research lab, Faculty of Pharmacy, Beirut Arab University, Beirut, Lebanon
| | - Mohammed M Mehanna
- Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt; Department of Pharmaceutical Sciences, School of Pharmacy, Lebanese American University, Byblos, Lebanon.
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22
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Pina Costa C, Nižić Nodilo L, Silva R, Martins E, Zadravec D, Kalogjera L, Nuno Moreira J, Manuel Sousa Lobo J, Hafner A, Catarina Silva A. In situ hydrogel containing diazepam-loaded nanostructured lipid carriers (DZP-NLC) for nose-to-brain delivery: development, characterization and deposition studies in a 3D-printed human nasal cavity model. Int J Pharm 2023; 644:123345. [PMID: 37619806 DOI: 10.1016/j.ijpharm.2023.123345] [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: 01/28/2023] [Revised: 06/26/2023] [Accepted: 08/21/2023] [Indexed: 08/26/2023]
Abstract
The nasal route has been investigated as a promising alternative for drug delivery to the central nervous system, avoiding passage through the blood-brain barrier and improving bioavailability. In this sense, it is necessary to develop and test the effectiveness of new formulations proposed for the management of neurological disorders. Thereby, the aim of this work was to develop and characterize an ion sensitive in situ hydrogel containing diazepam-loaded nanostructured lipid carriers (DZP-NLC) for nasal delivery in the treatment of epilepsy. Physical characterization of the developed formulations was performed and included the evaluation of rheological features, particle size, polydispersity index (PDI) and zeta potential (ZP) of an in situ hydrogel containing DZP-NLC. Afterwards, in vitro drug release, in vitro mucoadhesion and biocompatibility studies with RPMI 2650 nasal cells were performed. The in situ hydrogel containing DZP-NLC was aerosolized with a nasal spray device specifically designed for nose-to-brain delivery (VP7 multidose spray pump with a 232 N2B actuator) and characterized for droplet size distribution and spray cone angle. Finally, the deposition pattern of this hydrogel was evaluated in a 3D-printed human nasal cavity model. The developed in situ hydrogel containing DZP-NLC presented adequate characteristics for nasal administration, including good gelling ability, mucoadhesiveness and prolonged drug release. In addition, after inclusion in the hydrogel net, the particle size (81.79 ± 0.53 nm), PDI (0.21 ± 0.10) and ZP (-30.90 ± 0.10 mV), of the DZP-NLC remained appropriate for nose-to-brain delivery. Upon aerosolization in a nasal spray device, a suitable spray cone angle (22.5 ± 0.2°) and adequate droplet size distribution (Dv (90) of 317.77 ± 44.12 µm) were observed. Biocompatibility studies have shown that the developed formulation is safe towards RPMI 2650 cells in concentrations up to 100 μg/mL. Deposition studies on a 3D-printed human nasal cavity model revealed that the best nasal deposition profile was obtained upon formulation administration without airflow and at an angle from horizontal plane of 75°, resulting in 47% of administered dose deposited in the olfactory region and 89% recovery. The results of this study suggested that the intranasal administration of the developed in situ hydrogel containing DZP-NLC could be a promising alternative to the conventional treatments for epilepsy.
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Affiliation(s)
- Cláudia Pina Costa
- UCIBIO, REQUIMTE, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal; Associate Laboratory i4HB Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Laura Nižić Nodilo
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Renata Silva
- UCIBIO, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, Porto University, Porto, Portugal
| | - Eva Martins
- UCIBIO, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, Porto University, Porto, Portugal
| | - Dijana Zadravec
- Sestre milosrdnice University Hospital Center "Sestre milosrdnice", University of Zagreb, Zagreb, Croatia
| | - Livije Kalogjera
- Sestre milosrdnice University Hospital Center "Sestre milosrdnice", University of Zagreb, Zagreb, Croatia
| | - João Nuno Moreira
- CNC - Center for Neuroscience and Cell Biology, Center for Innovative Biomedicine and Biotechnology (CIBB), Faculty of Medicine (Pólo I), University of Coimbra, 3004-531 Coimbra, Portugal; Univ Coimbra - University of Coimbra, CIBB, Faculty of Pharmacy, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - José Manuel Sousa Lobo
- UCIBIO, REQUIMTE, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal; Associate Laboratory i4HB Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Anita Hafner
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Ana Catarina Silva
- UCIBIO, REQUIMTE, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal; Associate Laboratory i4HB Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, Portugal; FP-I3ID (Instituto de Investigação, Inovação e Desenvolvimento), FP-BHS (Biomedical and Health Sciences Research Unit), Faculty of Health Sciences, University Fernando Pessoa, 4249 004 Porto, Portugal.
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23
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Yang C, Nguyen DD, Lai J. Poly(l-Histidine)-Mediated On-Demand Therapeutic Delivery of Roughened Ceria Nanocages for Treatment of Chemical Eye Injury. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302174. [PMID: 37430140 PMCID: PMC10502830 DOI: 10.1002/advs.202302174] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 06/10/2023] [Indexed: 07/12/2023]
Abstract
Development of topical bioactive formulations capable of overcoming the low bioavailability of conventional eye drops is critically important for efficient management of ocular chemical burns. Herein, a nanomedicine strategy is presented to harness the surface roughness-controlled ceria nanocages (SRCNs) and poly(l-histidine) surface coatings for triggering multiple bioactive roles of intrinsically therapeutic nanocarriers and promoting transport across corneal epithelial barriers as well as achieving on-demand release of dual drugs [acetylcholine chloride (ACh) and SB431542] at the lesion site. Specifically, the high surface roughness helps improve cellular uptake and therapeutic activity of SRCNs while exerting a negligible impact on good ocular biocompatibility of the nanomaterials. Moreover, the high poly(l-histidine) coating amount can endow the SRCNs with an ≈24-fold enhancement in corneal penetration and an effective smart release of ACh and SB431542 in response to endogenous pH changes caused by tissue injury/inflammation. In a rat model of alkali burn, topical single-dose nanoformulation can efficaciously reduce corneal wound areas (19-fold improvement as compared to a marketed eye drops), attenuate ≈93% abnormal blood vessels, and restore corneal transparency to almost normal at 4 days post-administration, suggesting great promise for designing multifunctional metallic nanotherapeutics for ocular pharmacology and tissue regenerative medicine.
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Affiliation(s)
- Chia‐Jung Yang
- Department of Biomedical EngineeringChang Gung UniversityTaoyuan33302Taiwan
| | - Duc Dung Nguyen
- Department of Biomedical EngineeringChang Gung UniversityTaoyuan33302Taiwan
| | - Jui‐Yang Lai
- Department of Biomedical EngineeringChang Gung UniversityTaoyuan33302Taiwan
- Department of OphthalmologyChang Gung Memorial Hospital, LinkouTaoyuan33305Taiwan
- Department of Materials EngineeringMing Chi University of TechnologyNew Taipei City24301Taiwan
- Research Center for Chinese Herbal MedicineCollege of Human EcologyChang Gung University of Science and TechnologyTaoyuan33303Taiwan
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24
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Xie G, Lin S, Wu F, Liu J. Nanomaterial-based ophthalmic drug delivery. Adv Drug Deliv Rev 2023; 200:115004. [PMID: 37433372 DOI: 10.1016/j.addr.2023.115004] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/27/2023] [Accepted: 07/04/2023] [Indexed: 07/13/2023]
Abstract
The low bioavailability and side effects of conventional drugs for eye disease necessitate the development of efficient drug delivery systems. Accompanying the developments of nanofabrication techniques, nanomaterials have been recognized as promising tools to overcome these challenges due to their flexible and programmable properties. Given the advances achieved in material science, a broad spectrum of functional nanomaterials capable of overcoming various ocular anterior and posterior segment barriers have been explored to satisfy the demands for ocular drug delivery. In this review, we first highlight the unique functions of nanomaterials suitable for carrying and transporting ocular drugs. Then, various functionalization strategies are emphasized to endow nanomaterials with superior performance in enhanced ophthalmic drug delivery. The rational design of several affecting factors is essential for ideal nanomaterial candidates and is depicted as well. Lastly, we introduce the current applications of nanomaterial-based delivery systems in the therapy of different ocular anterior and posterior segment diseases. The limitations of these delivery systems as well as potential solutions are also discussed. This work will inspire innovative design thinking for the development of nanotechnology-mediated strategies for advanced drug delivery and treatment toward ocular diseases.
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Affiliation(s)
- Guocheng Xie
- Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine, Institute of Molecular Medicine, State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Sisi Lin
- Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine, Institute of Molecular Medicine, State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Feng Wu
- Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine, Institute of Molecular Medicine, State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.
| | - Jinyao Liu
- Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine, Institute of Molecular Medicine, State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.
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25
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Mascarenhas M, Chaudhari P, Lewis SA. Natamycin Ocular Delivery: Challenges and Advancements in Ocular Therapeutics. Adv Ther 2023; 40:3332-3359. [PMID: 37289410 PMCID: PMC10329963 DOI: 10.1007/s12325-023-02541-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 05/03/2023] [Indexed: 06/09/2023]
Abstract
Fungal keratitis, an ocular fungal infection, is one of the leading causes of monocular blindness. Natamycin has long been considered the mainstay drug used for treating fungal keratitis and is the only US Food and Drug Administration (USFDA)-approved drug, commercially available as a topical 5% w/v suspension. Furthermore, ocular fungal infection treatment takes a few weeks to months to recover, and the available marketed antifungal suspensions are associated with poor residence time, limited bioavailability (< 5%) and high dosing frequency as well as minor irritation and discomfort. Despite these challenges, natamycin is still the preferred drug choice for treating fungal keratitis, as it has fewer side effects and less ocular toxicity and is more effective against Fusarium species than other antifungal agents. Several novel therapeutic approaches for the topical delivery of natamycin have been reported to overcome the challenges posed by the conventional dosage forms and to improve ocular bioavailability for the efficient management of fungal keratitis. Current progress in the delivery systems uses approaches aimed at improving the corneal residence time, bioavailability and antifungal potency, thereby reducing the dose and dosing frequency of natamycin. In this review, we discuss the various strategies explored to overcome the challenges present in ocular drug delivery of natamycin and improve its bioavailability for ocular therapeutics.
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Affiliation(s)
- Mabel Mascarenhas
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhavnagar, Manipal, Karnataka, 576104, India
| | - Pinal Chaudhari
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhavnagar, Manipal, Karnataka, 576104, India
| | - Shaila A Lewis
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhavnagar, Manipal, Karnataka, 576104, India.
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26
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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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27
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Sapowadia A, Ghanbariamin D, Zhou L, Zhou Q, Schmidt T, Tamayol A, Chen Y. Biomaterial Drug Delivery Systems for Prominent Ocular Diseases. Pharmaceutics 2023; 15:1959. [PMID: 37514145 PMCID: PMC10383518 DOI: 10.3390/pharmaceutics15071959] [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: 05/02/2023] [Revised: 06/26/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
Ocular diseases, such as age-related macular degeneration (AMD) and glaucoma, have had a profound impact on millions of patients. In the past couple of decades, these diseases have been treated using conventional techniques but have also presented certain challenges and limitations that affect patient experience and outcomes. To address this, biomaterials have been used for ocular drug delivery, and a wide range of systems have been developed. This review will discuss some of the major classes and examples of biomaterials used for the treatment of prominent ocular diseases, including ocular implants (biodegradable and non-biodegradable), nanocarriers (hydrogels, liposomes, nanomicelles, DNA-inspired nanoparticles, and dendrimers), microneedles, and drug-loaded contact lenses. We will also discuss the advantages of these biomaterials over conventional approaches with support from the results of clinical trials that demonstrate their efficacy.
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Affiliation(s)
- Avin Sapowadia
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
| | - Delaram Ghanbariamin
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
- Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Libo Zhou
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
| | - Qifa Zhou
- Department of Biomedical Engineering and Ophthalmology, University of Southern California, Los Angeles, CA 90089, USA
| | - Tannin Schmidt
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
- Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Ali Tamayol
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
- Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Yupeng Chen
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
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28
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Peng X, Zhang T, Liu R, Jin X. Potential in exosome-based targeted nano-drugs and delivery vehicles for posterior ocular disease treatment: from barriers to therapeutic application. Mol Cell Biochem 2023:10.1007/s11010-023-04798-w. [PMID: 37402019 DOI: 10.1007/s11010-023-04798-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 06/21/2023] [Indexed: 07/05/2023]
Abstract
Posterior ocular disease, a disease that accounts for 55% of all ocular diseases, can contribute to permanent vision loss if left without treatment. Due to the special structure of the eye, various obstacles make it difficult for drugs to reach lesions in the posterior ocular segment. Therefore, the development of highly permeable targeted drugs and delivery systems is particularly important. Exosomes are a class of extracellular vesicles at 30-150 nm, which are secreted by various cells, tissues, and body fluids. They carry various signaling molecules, thus endowing them with certain physiological functions. In this review, we describe the ocular barriers and the biogenesis, isolation, and engineering of exosomes, as exosomes not only have pharmacological effects but also are good nanocarriers with targeted properties. Moreover, their biocompatibility and immunogenicity are better than synthetic nanocarriers. Most importantly, they may have the ability to pass through the blood-eye barrier. Thus, they may be developed as both targeted nano-drugs and nano-delivery vehicles for the treatment of posterior ocular diseases. We focus on the current status and potential application of exosomes as targeted nano-drugs and nano-delivery vehicles in posterior ocular diseases.
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Affiliation(s)
- Xingru Peng
- State Key Laboratory of Component‑based Chinese Medicine, Haihe Laboratory of Modern Chinese Medicine, College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Tingting Zhang
- State Key Laboratory of Component‑based Chinese Medicine, Haihe Laboratory of Modern Chinese Medicine, College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Rui Liu
- State Key Laboratory of Component‑based Chinese Medicine, Haihe Laboratory of Modern Chinese Medicine, College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Xin Jin
- Department of Health Services, Logistics University of People's Armed Police Force, Tianjin, Chenlin Road, Hedong District, Tianjin, 300162, China.
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29
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López-Cano JJ, González-Cela-Casamayor MA, Andrés-Guerrero V, Vicario-de-la-Torre M, Benítez-Del-Castillo JM, Herrero-Vanrell R, Molina-Martínez IT. New trends towards glaucoma treatment: Topical osmoprotective microemulsions loaded with latanoprost. Ocul Surf 2023; 29:314-330. [PMID: 37295473 DOI: 10.1016/j.jtos.2023.05.013] [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: 03/09/2023] [Revised: 05/29/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023]
Abstract
The chronic use of hypotensive agents eventually leads to ocular surface damage and poor patient compliance during glaucoma management. Thus, new sustained drug delivery systems are needed. This work aimed to develop osmoprotective latanoprost-loaded microemulsion formulations as new potential glaucoma treatments with ocular surface protective properties. The microemulsions were characterized and latanoprost encapsulation efficacy determined. In-vitro tolerance, osmoprotective efficacy, cell internalization as well as cell-microemulsion interactions and distribution were performed. In vivo hypotensive activity was conducted in rabbits to assess intraocular pressure reduction and relative ocular bioavailability. Physicochemical characterization showed nanodroplet sizes within 20-30 nm, being in vitro tolerance within 80 and 100% viability in corneal and conjunctival cells. Besides, microemulsions exhibited higher protection under hypertonic conditions than untreated cells. Cell fluorescence lasted for 11 days after short exposure to coumarin-loaded microemulsions (5 min) showing extensive internalization in different cell compartments by electronic microscopy. In vivo studies exhibited that a single instillation of latanoprost-loaded microemulsions reduced the intraocular pressure for several days (4-6 days without polymer and 9-13 days with polymers). Relative ocular bioavailability was 4.5 and 19 times higher than the marketed formulation. These findings suggest the use of these microemulsions as potential combined strategies for extended surface protection and glaucoma treatment.
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Affiliation(s)
- J J López-Cano
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, School of Pharmacy (UCM), Plaza Ramón y Cajal s/n, Madrid, 28040, Spain; Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Health Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, 28040, Spain
| | - M A González-Cela-Casamayor
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, School of Pharmacy (UCM), Plaza Ramón y Cajal s/n, Madrid, 28040, Spain; Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Health Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, 28040, Spain
| | - V Andrés-Guerrero
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, School of Pharmacy (UCM), Plaza Ramón y Cajal s/n, Madrid, 28040, Spain; Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Health Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, 28040, Spain
| | - M Vicario-de-la-Torre
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, School of Pharmacy (UCM), Plaza Ramón y Cajal s/n, Madrid, 28040, Spain; Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Health Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, 28040, Spain
| | - J M Benítez-Del-Castillo
- Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Health Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, 28040, Spain; Ocular Surface and Inflammation Unit, Ophthalmology Department, Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, 28040, Spain
| | - R Herrero-Vanrell
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, School of Pharmacy (UCM), Plaza Ramón y Cajal s/n, Madrid, 28040, Spain; Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Health Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, 28040, Spain.
| | - I T Molina-Martínez
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, School of Pharmacy (UCM), Plaza Ramón y Cajal s/n, Madrid, 28040, Spain; Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Health Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, 28040, Spain.
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30
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Khan S, Sharma A, Jain V. An Overview of Nanostructured Lipid Carriers and its Application in Drug Delivery through Different Routes. Adv Pharm Bull 2023; 13:446-460. [PMID: 37646052 PMCID: PMC10460807 DOI: 10.34172/apb.2023.056] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 07/24/2022] [Accepted: 09/09/2022] [Indexed: 09/01/2023] Open
Abstract
Nanostructured Lipid Carriers (NLC) are nano-sized colloidal drug delivery system that contains a lipid mixture consisting of both solid and liquid lipids in their core. This Lipid-Based Nanosystem is introduced as a biocompatible, non-toxic, and safe nano-drug delivery system as compared to polymeric or metallic nanoparticles. Due to its safety, stability, and high drug loading capacity compared to other lipid-based nanocarriers, NLC gained the attention of researchers to formulate safe and effective drug carriers. The ability to increase drug solubility and permeability while encapsulating the drug in a lipidic shell makes them an ideal carrier for drug delivery through difficult-to-achieve routes. Surface modification of NLC and the use of various additives result in drug targeting and increased residence time. With such qualities, NLCs can be used to treat a variety of diseases such as cancer, infections, neurodegenerative diseases, hypertension, diabetes, and pain management. This review focuses on the recent developments being made to deliver the drugs and genes through different routes via these nanocarriers. Here, we also discuss about historical background, structure, types of NLC and commonly employed techniques for manufacturing lipid-based nanocarriers.
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Affiliation(s)
- Shadab Khan
- Mahakal Institute of Pharmaceutical Studies, Ujjain, India
| | | | - Vikas Jain
- Mahakal Institute of Pharmaceutical Studies, Ujjain, India
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31
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Tang X, Liu J, Yan R, Peng Q. Carbohydrate polymer-based bioadhesive formulations and their potentials for the treatment of ocular diseases: A review. Int J Biol Macromol 2023; 242:124902. [PMID: 37210054 DOI: 10.1016/j.ijbiomac.2023.124902] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/27/2023] [Accepted: 05/13/2023] [Indexed: 05/22/2023]
Abstract
Eyes are directly exposed to the outer environment and susceptible to infections, leading to various ocular disorders. Local medication is preferred to treat eye diseases due to its convenience and compliance. However, the rapid clearance of the local formulations highly limits the therapeutic efficacy. In the past decades, several carbohydrate bioadhesive polymers (CBPs), such as chitosan and hyaluronic acid, have been used in ophthalmology for sustained ocular drug delivery. These CBP-based delivery systems have improved the treatment of ocular diseases to a large extent but also caused some undesired effects. Herein, we aim to summarize the applications of some typical CBPs (including chitosan, hyaluronic acid, cellulose, cyclodextrin, alginate and pectin) in treating ocular diseases from the general view of ocular physiology, pathophysiology and drug delivery, and to provide a comprehensive understanding of the design of the CBP-based formulations for ocular use. The patents and clinical trials of CBPs for ocular management are also discussed. In addition, a discussion on the concerns of CBPs in clinical use and the possible solutions is presented.
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Affiliation(s)
- Xuelin Tang
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jianhong Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Ruijiao Yan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Qiang Peng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
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32
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Ana RD, Gliszczyńska A, Sanchez-Lopez E, Garcia ML, Krambeck K, Kovacevic A, Souto EB. Precision Medicines for Retinal Lipid Metabolism-Related Pathologies. J Pers Med 2023; 13:jpm13040635. [PMID: 37109021 PMCID: PMC10145959 DOI: 10.3390/jpm13040635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/01/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
Oxidation of lipids and lipoproteins contributes to inflammation processes that promote the development of eye diseases. This is a consequence of metabolism dysregulation; for instance, that of the dysfunctional peroxisomal lipid metabolism. Dysfunction of lipid peroxidation is a critical factor in oxidative stress that causes ROS-induced cell damage. Targeting the lipid metabolism to treat ocular diseases is an interesting and effective approach that is now being considered. Indeed, among ocular structures, retina is a fundamental tissue that shows high metabolism. Lipids and glucose are fuel substrates for photoreceptor mitochondria; therefore, retina is rich in lipids, especially phospholipids and cholesterol. The imbalance in cholesterol homeostasis and lipid accumulation in the human Bruch's membrane are processes related to ocular diseases, such as AMD. In fact, preclinical tests are being performed in mice models with AMD, making this area a promising field. Nanotechnology, on the other hand, offers the opportunity to develop site-specific drug delivery systems to ocular tissues for the treatment of eye diseases. Specially, biodegradable nanoparticles constitute an interesting approach to treating metabolic eye-related pathologies. Among several drug delivery systems, lipid nanoparticles show attractive properties, e.g., no toxicological risk, easy scale-up and increased bioavailability of the loaded active compounds. This review analyses the mechanisms involved in ocular dyslipidemia, as well as their ocular manifestations. Moreover, active compounds as well as drug delivery systems which aim to target retinal lipid metabolism-related diseases are thoroughly discussed.
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Affiliation(s)
- Raquel da Ana
- UCIBIO-Applied Molecular Biosciences Unit, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Anna Gliszczyńska
- Department of Food Chemistry and Biocatalysis, Faculty of Biotechnology and Food Science, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland
| | - Elena Sanchez-Lopez
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08007 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08007 Barcelona, Spain
- Unit of Synthesis and Biomedical Applications of Peptides, IQAC-CSIC, 08034 Barcelona, Spain
| | - Maria L Garcia
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08007 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08007 Barcelona, Spain
| | - Karolline Krambeck
- UCIBIO-Applied Molecular Biosciences Unit, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
- Health Sciences School, Guarda Polytechnic Institute, 6300-035 Guarda, Portugal
| | - Andjelka Kovacevic
- Department of Pharmaceutical Technology, Institute of Pharmacy, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Eliana B Souto
- UCIBIO-Applied Molecular Biosciences Unit, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
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Ghezzi M, Ferraboschi I, Fantini A, Pescina S, Padula C, Santi P, Sissa C, Nicoli S. Hyaluronic acid - PVA films for the simultaneous delivery of dexamethasone and levofloxacin to ocular tissues. Int J Pharm 2023; 638:122911. [PMID: 37028574 DOI: 10.1016/j.ijpharm.2023.122911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/08/2023]
Abstract
Ocular drug delivery is challenging due to the poor drug penetration across ocular barriers and short retention time of the formulation at the application site. Films, applied as inserts or implants, can be used to increase residence time while controlling drug release. In this work, hydrophilic films made of hyaluronic acid and two kinds of PVA were loaded with dexamethasone (included as hydroxypropylcyclodextrin complex) and levofloxacin. This association represents one of the main treatments for the post cataract surgery management, and it is also promising for eye infections whith pain and inflammation. Films were characterized in terms of swelling and drug release and were then applied to porcine eye bulbs and isolated ocular tissues. Film swelling leads to the formation of either a gel (3D swelling) or a larger film (2D swelling) depending on the type of PVA used. Films, prepared in an easy and scalable method, demonstrated high loading capacity, controlled drug release and the capability to deliver dexamethasone and levofloxacin to the cornea and across the sclera, to potentially target also the posterior eye segment. Overall, this device can be considered a multipurpose delivery platform intended for the concomitant release of lipophilic and hydrophilic drugs.
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Innovation in the Development of Synthetic and Natural Ocular Drug Delivery Systems for Eye Diseases Treatment: Focusing on Drug-Loaded Ocular Inserts, Contacts, and Intraocular Lenses. Pharmaceutics 2023; 15:pharmaceutics15020625. [PMID: 36839947 PMCID: PMC9961328 DOI: 10.3390/pharmaceutics15020625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/07/2023] [Accepted: 02/10/2023] [Indexed: 02/15/2023] Open
Abstract
Nowadays, ocular drug delivery still remains a challenge, since the conventional dosage forms used for anterior and posterior ocular disease treatments, such as topical, systemic, and intraocular administration methods, present important limitations mainly related to the anatomical complexity of the eye. In particular, the blood-ocular barrier along with the corneal barrier, ocular surface, and lacrimal fluid secretion reduce the availability of the administered active compounds and their efficacy. These limitations have increased the need to develop safe and effective ocular delivery systems able to sustain the drug release in the interested ocular segment over time. In the last few years, thanks to the innovations in the materials and technologies employed, different ocular drug delivery systems have been developed. Therefore, this review aims to summarize the synthetic and natural drug-loaded ocular inserts, contacts, and intraocular lenses that have been recently developed, emphasizing the characteristics that make them promising for future ocular clinical applications.
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35
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Bedos L, Allbaugh RA, Roy M, Kubai MA, Sebbag L. Precorneal retention time of ocular lubricants measured with fluorophotometry in healthy dogs. Vet Ophthalmol 2023; 26 Suppl 1:81-88. [PMID: 36749146 DOI: 10.1111/vop.13065] [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: 06/21/2022] [Revised: 12/18/2022] [Accepted: 01/20/2023] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Determine the precorneal retention time of five different ocular lubricants commonly used in dogs. ANIMALS STUDIED Six healthy Beagle dogs (n = 12 eyes). PROCEDURES Five ocular lubricants were studied: Artificial Tears Solution® (1.4% polyvinyl alcohol), I-Drop® Vet Plus (0.25% hyaluronate), Optixcare® Eye Lube Plus (0.25% hyaluronate), Systane® Ultra (0.4% polyethylene glycol 400 and 0.3% propylene glycol), and Artificial Tears Ointment® (mineral oil/white petrolatum). Each lubricant was mixed with 10% sodium fluorescein to achieve 1% fluorescein formulations. Following topical administration of 35 mg in each eye, tear fluid was collected with capillary tubes at selected times (0, 1, 5, 10, 20, 30, 40, 50, 60, 90, 120, 180 min) and fluorescein concentrations were measured with a computerized scanning ocular fluorophotometer. RESULTS Tear fluorescence was significantly greater with Artificial Tears Ointment® compared with other lubricant formulations from 1 to 20 min post-administration. Median (range) precorneal retention times were significantly different among the 5 lubricants, ranging from 40 minutes (20-90 min) for Artificial Tears Ointment®, 35 min (20-90 min) for Systane® Ultra, 30 min (10-60 min) for I-Drop® Vet Plus, 25 min (10-60 min) for Optixcare® Eye Lube Plus, and 10 min (10-20 min) for Artificial Tears Solution®. Precorneal retention time was significantly lower for Artificial Tears Solution® compared with the other 4 formulations. CONCLUSIONS This study established normative data for the retention time of common lubricants on the ocular surface of dogs, which may be used to guide clinicians with their choice of lubricant and frequency of administration.
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Affiliation(s)
- L Bedos
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - R A Allbaugh
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - M Roy
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - M A Kubai
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - L Sebbag
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA.,Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel
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Popova E, Matveeva O, Beznos O, Tikhomirova V, Kudryashova E, Grigoriev Y, Chesnokova N, Kost O. Chitosan-Covered Calcium Phosphate Particles Co-Loaded with Superoxide Dismutase 1 and ACE Inhibitor: Development, Characterization and Effect on Intraocular Pressure. Pharmaceutics 2023; 15:pharmaceutics15020550. [PMID: 36839871 PMCID: PMC9962464 DOI: 10.3390/pharmaceutics15020550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/25/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Improvement of the efficiency of drug penetration into the eye tissues is still an actual problem in ophthalmology. One of the most promising solutions is drug encapsulation in carriers capable of overcoming the cornea/sclera tissue barrier. Formulations on the base of antioxidant enzyme, superoxide dismutase 1 (SOD1), and an inhibitor of angiotensin-converting enzyme, enalaprilat, were prepared by simultaneous inclusion of both drugs into calcium phosphate (CaP) particles in situ with subsequent covering of the particles with 5 kDa chitosan. The formulations obtained were characterized by dynamic light scattering and scanning electron microscopy. Hybrid CaP-chitosan particles co-loaded with SOD1 and enalaprilat had a mean hydrodynamic diameter of 120-160 nm and ζ-potential +20 ± 1 mV. The percentage of the inclusion of SOD1 and enalaprilat in hybrid particles was 30% and 56%, respectively. The ability of SOD1 and enalaprilat to reduce intraocular pressure (IOP) was examined in vivo in normotensive Chinchilla rabbits. It was shown that topical instillations of SOD1/enalaprilat co-loaded hybrid particles were much more effective in decreasing IOP compared to free enzyme or free enalaprilat and even to the same particles that contained a single drug. Thus, the proposed formulations demonstrate potential as prospective therapeutic agents for the treatment of glaucoma.
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Affiliation(s)
- Ekaterina Popova
- Chemistry Faculty, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Olesya Matveeva
- Chemistry Faculty, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Olga Beznos
- Helmholtz National Medical Research Center of Eye Diseases, 105062 Moscow, Russia
| | - Victoria Tikhomirova
- Chemistry Faculty, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Elena Kudryashova
- Chemistry Faculty, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Yuri Grigoriev
- Shubnikov Institute of Crystallography, Federal Scientific Research Center Crystallography and Photonics, Russian Academy of Sciences, 119333 Moscow, Russia
| | - Natalia Chesnokova
- Helmholtz National Medical Research Center of Eye Diseases, 105062 Moscow, Russia
| | - Olga Kost
- Chemistry Faculty, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
- Correspondence: ; Tel.: +7-495-939-34-30
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Grassiri B, Mezzetta A, Maisetta G, Migone C, Fabiano A, Esin S, Guazzelli L, Zambito Y, Batoni G, Piras AM. Betaine- and L-Carnitine-Based Ionic Liquids as Solubilising and Stabilising Agents for the Formulation of Antimicrobial Eye Drops Containing Diacerein. Int J Mol Sci 2023; 24:ijms24032714. [PMID: 36769037 PMCID: PMC9916883 DOI: 10.3390/ijms24032714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023] Open
Abstract
The therapeutic efficacy of topically administered drugs, however powerful, is largely affected by their bioavailability and, thus, ultimately, on their aqueous solubility and stability. The aim of this study was to evaluate the use of ionic liquids (ILs) as functional excipients to solubilise, stabilise, and prolong the ocular residence time of diacerein (DIA) in eye drop formulations. DIA is a poorly soluble and unstable anthraquinone prodrug, rapidly hydrolysed to rhein (Rhe), for the treatment of osteoarthritis. DIA has recently been evaluated as an antimicrobial agent for bacterial keratitis. Two ILs based on natural zwitterionic compounds were investigated: L-carnitine C6 alkyl ester bromide (Carn6), and betaine C6 alkyl ester bromide (Bet6). The stabilising, solubilising, and mucoadhesive properties of ILs were investigated, as well as their cytotoxicity to the murine fibroblast BALB/3T3 clone A31 cell line. Two IL-DIA-based eye drop formulations were prepared, and their efficacy against both Staphylococcus aureus and Pseudomonas aeruginosa was determined. Finally, the eye drops were administered in vivo on New Zealand albino rabbits, testing their tolerability as well as their elimination and degradation kinetics. Both Bet6 and Carn6 have good potential as functional excipients, showing solubilising, stabilising, mucoadhesive, and antimicrobial properties; their in vitro cytotoxicity and in vivo ocular tolerability pave the way for their future use in ophthalmic applications.
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Affiliation(s)
| | - Andrea Mezzetta
- Department of Pharmacy, University of Pisa, 56126 Pisa, Italy
| | - Giuseppantionio Maisetta
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
| | - Chiara Migone
- Department of Pharmacy, University of Pisa, 56126 Pisa, Italy
| | - Angela Fabiano
- Department of Pharmacy, University of Pisa, 56126 Pisa, Italy
| | - Semih Esin
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
- Centre for Instrument Sharing of University of Pisa (CISUP), 56126 Pisa, Italy
| | | | - Ylenia Zambito
- Department of Pharmacy, University of Pisa, 56126 Pisa, Italy
- Research Centre for Nutraceutical and Healthy Foods “NUTRAFOOD”, University of Pisa, 56124 Pisa, Italy
| | - Giovanna Batoni
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
- Centre for Instrument Sharing of University of Pisa (CISUP), 56126 Pisa, Italy
| | - Anna Maria Piras
- Department of Pharmacy, University of Pisa, 56126 Pisa, Italy
- Centre for Instrument Sharing of University of Pisa (CISUP), 56126 Pisa, Italy
- Correspondence:
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38
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Račić A, Krajišnik D. Biopolymers in Mucoadhesive Eye Drops for Treatment of Dry Eye and Allergic Conditions: Application and Perspectives. Pharmaceutics 2023; 15:pharmaceutics15020470. [PMID: 36839790 PMCID: PMC9962975 DOI: 10.3390/pharmaceutics15020470] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/15/2023] [Accepted: 01/28/2023] [Indexed: 02/04/2023] Open
Abstract
Dry eye syndrome and allergic conjunctivitis are the most common inflammatory disorders of the eye surface. Although eye drops are the most usual prescribed dosage form, they are characterized by low ocular availability due to numerous barrier mechanisms of the eye. The use of biopolymers in liquid ophthalmic preparations has numerous advantages, such as increasing the viscosity of the tear film, exhibiting bioadhesive properties, and resisting the drainage system, leading to prolonged retention of the preparation at the site of application, and improvement of the therapeutic effect. Some mucoadhesive polymers are multifunctional excipients, so they act by different mechanisms on increasing the permeability of the cornea. Additionally, many hydrophilic biopolymers can also represent the active substances in artificial tear preparations, due to their lubrication and moisturizing effect. With the modification of conventional ophthalmic preparations, there is a need for development of new methods for their characterization. Numerous methods for the assessment of mucoadhesiveness have been suggested by the literature. This review gives an overview related to the development of mucoadhesive liquid ophthalmic formulations for the treatment of dry eye and allergic conditions.
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Affiliation(s)
- Anđelka Račić
- Department of Pharmacy, University of Banja Luka-Faculty of Medicine, Save Mrkalja 14, 78000 Banja Luka, Bosnia and Herzegovina
| | - Danina Krajišnik
- Department of Pharmaceutical Technology and Cosmetology, University of Belgrade-Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
- Correspondence: ; Tel.: +381-11-395-1359
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39
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Pardeshi SR, More MP, Patil PB, Mujumdar A, Naik JB. Statistical optimization of voriconazole nanoparticles loaded carboxymethyl chitosan-poloxamer based in situ gel for ocular delivery: In vitro, ex vivo, and toxicity assessment. Drug Deliv Transl Res 2022; 12:3063-3082. [PMID: 35525868 DOI: 10.1007/s13346-022-01171-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2022] [Indexed: 12/16/2022]
Abstract
The research study reflects the development of novel voriconazole (VCZ) loaded nanoparticles (NPs) for prolonged delivery for the management of ocular diseases. The in situ ophthalmic gel was prepared by incorporating NPs into carboxymethyl chitosan (CMCh) and poloxamer. The central composite design was used to optimize the process for the preparation of nanoparticles by the o/w solvent evaporation method. The developed nanoparticles were evaluated for the encapsulation efficiency (89.6 ± 1.2%), particle size (219.3 ± 1.8 nm), polydispersity index (PDI, 0.1), zeta potential (- 21.1 ± 1.12 mV), saturation solubility, DSC study, and drug release. The etherification process grafts carboxyl surface functional groups, on chitosan, and was confirmed by FTIR and NMR studies. The developed CMCh-poloxamer based gelling system was found to be clear and transparent with gelation temperature varying from 33 to 40 °C. The nanoparticle-loaded gel containing CMCh demonstrated enhanced antifungal activity against Candida albicans. The optimized batch containing CMCh showed improved mucoadhesion by 2.86-fold compared to VCZ nanosuspension. The drug release was prolonged up to 8 h with an ex vivo study suggesting the enhanced permeation across goat cornea estimated via fluorescent microscope. The hen's egg chorioallantoic membrane study revealed that the formulation was non-irritant and tolerated by the chorioallantoic membrane. The present study concludes that the VCZ loaded nanoparticulate in situ ophthalmic gel using CMCh may act as a potential alternative for traditional eye drops.
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Affiliation(s)
- Sagar R Pardeshi
- University Institute of Chemical Technology, KBC North Maharashtra University, Jalgaon, Maharashtra, 425001, India
| | - Mahesh P More
- Department of Pharmaceutics, Dr. Rajendra Gode College of Pharmacy, Malkapur, 443101, India
| | - Pritam B Patil
- Department of Chemical Engineering, Shri S'ad Vidya Mandal Institute of Technology, Bharuch, Gujarat, 392001, India
| | - Arun Mujumdar
- Department of Bioresource Engineering, Macdonald College, McGill University, Ste. Anne de Bellevue, QC, Canada
| | - Jitendra B Naik
- University Institute of Chemical Technology, KBC North Maharashtra University, Jalgaon, Maharashtra, 425001, India.
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40
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Almendro Vedia VG, Martínez-Pedrero F, Maestro A, Guzmán E, Natale P. Editorial: Biomimetic and bioinspired membranes to reconstruct the properties of natural systems. Front Mol Biosci 2022; 9:1079570. [DOI: 10.3389/fmolb.2022.1079570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 10/31/2022] [Indexed: 11/17/2022] Open
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41
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Moiseev R, Kaldybekov DB, Filippov SK, Radulescu A, Khutoryanskiy VV. Maleimide-Decorated PEGylated Mucoadhesive Liposomes for Ocular Drug Delivery. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13870-13879. [PMID: 36327096 PMCID: PMC9671038 DOI: 10.1021/acs.langmuir.2c02086] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Liposomes are promising spherical vesicles for topical drug delivery to the eye. Several types of vesicles were formulated in this study, including conventional, PEGylated, and maleimide-decorated PEGylated liposomes. The physicochemical characteristics of these liposomes, including their size, zeta potential, ciprofloxacin encapsulation efficiency, loading capacity, and release, were evaluated. The structure of these liposomes was examined using dynamic light scattering, transmission electron microscopy, and small angle neutron scattering. The ex vivo corneal and conjunctival retention of these liposomes were examined using the fluorescence flow-through method. Maleimide-decorated liposomes exhibited the best retention performance on bovine conjunctiva compared to other types of liposomes studied. Poor retention of all liposomal formulations was observed on bovine cornea.
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Affiliation(s)
- Roman
V. Moiseev
- Reading
School of Pharmacy, University of Reading, Whiteknights, RG6 6DXReading, United Kingdom
| | - Daulet B. Kaldybekov
- Reading
School of Pharmacy, University of Reading, Whiteknights, RG6 6DXReading, United Kingdom
- Department
of Chemistry and Chemical Technology, Al-Farabi
Kazakh National University, 050040Almaty, Kazakhstan
| | - Sergey K. Filippov
- Reading
School of Pharmacy, University of Reading, Whiteknights, RG6 6DXReading, United Kingdom
| | - Aurel Radulescu
- Forschungszentrum
Jülich GmbH, Jülich Centre for Neutron Science (JCNS)
at Heinz Maier-Leibnitz Zentrum (MLZ), Lichtenbergstraße 1, 85748Garching, Germany
| | - Vitaliy V. Khutoryanskiy
- Reading
School of Pharmacy, University of Reading, Whiteknights, RG6 6DXReading, United Kingdom
- . Phone: +44(0) 118 378 6119. Fax: +44(0) 118
378 4703
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42
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Erdinest N, Pincovich S, London N, Solomon A. Neurostimulation for dry eye disease. Curr Opin Allergy Clin Immunol 2022; 22:328-334. [PMID: 35779066 DOI: 10.1097/aci.0000000000000841] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW To review the neuroanatomy and physiology of the basal and reflex tearing and present the available and developing therapies using the concept of neurostimulation in dry eye disease (DED). RECENT FINDINGS The most prevalent current DED treatments seek to supplement low tear volume and tear components or reduce inflammation. Neurostimulation is a unique approach gaining momentum in recent years, geared toward increasing the production of all basal tear components by stimulating the nerves responsible for producing the various tear components. The neuroanatomy of the lacrimal unit provides several possible access points to stimulate tear production through two arms of the sensory trigeminal nerves. Modes of stimulation include chemical or energy in electrical or magnetic form. Research thus far has shown that neurostimulation can achieve lacrimal, goblet cell, and meibomian gland stimulation. Subjectively it improves symptoms of DED. Clinically, neurostimulation has improved the signs and symptoms of DED by increasing basal tear production and tear volume. SUMMARY Neurostimulation using electrical, mechanical, or chemical means is a novel concept to increase tear production and was demonstrated to be an effective, safe, and well-tolerated method for managing DED.
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Affiliation(s)
- Nir Erdinest
- Department of Ophthalmology, Hadassah-Hebrew University Medical Center, Jerusalem
| | | | | | - Abraham Solomon
- Department of Ophthalmology, Hadassah-Hebrew University Medical Center, Jerusalem
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Salata GC, Malagó ID, Lopes LB. A Lipid-Based In Situ-Forming Hexagonal Phase for Prolonged Retention and Drug Release in the Breast Tissue. AAPS PharmSciTech 2022; 23:260. [PMID: 36123553 DOI: 10.1208/s12249-022-02411-9] [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: 06/13/2022] [Accepted: 08/26/2022] [Indexed: 11/30/2022] Open
Abstract
In this study, the addition of monoolein to phosphatidylcholine (PC), tricaprylin, and propylene glycol (PG) mixtures was studied to produce fluid precursor formulations (FIPs) that could transform into hexagonal phase (resistant to aqueous dilution) in vitro and in vivo. The overall goal was to obtain FIPs that could incorporate chemopreventive drugs for subcutaneous administration in the mammary tissue to inhibit the development and/or recurrence of breast cancer. Increasing PG content reduced FIP viscosity up to ~ 2.5-fold, while increases in PC (over monoolein) increased the formation of emulsified systems. The hexagonal phase was observed at 20% of water and higher, with the minimum amount of water necessary for this formation increasing with PG content. The selected FIP formed a depot in vivo after ~ 24 h of administration; its structure was compatible with the hexagonal phase and it remained in the mammary tissue for at least 30 days, prolonging the permanence of a fluorescent probe. In vitro, the release of the synthetic retinoid fenretinide was slow, with ~ 9% of the drug released in 72 h. Consistent with this slow release, fenretinide IC50 in breast cancer cells was ~ 100-fold higher in the selected FIP compared to its solution. The FIP reduced cell migration and presented higher cytotoxicity towards tumor compared to non-tumor cells. Given the limited number of options for pharmacological prevention of breast cancer development and recurrences, this formulation could potentially find applicability to reduce the frequency of administration and improve local concentrations of chemopreventive drugs.
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Affiliation(s)
- Giovanna C Salata
- Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, 1524 Av. Prof. Lineu Prestes, São Paulo-SP, 05508-000, Brazil
| | - Isabella D Malagó
- Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, 1524 Av. Prof. Lineu Prestes, São Paulo-SP, 05508-000, Brazil
| | - Luciana B Lopes
- Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, 1524 Av. Prof. Lineu Prestes, São Paulo-SP, 05508-000, Brazil.
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Ocular Drug Delivery: Advancements and Innovations. Pharmaceutics 2022; 14:pharmaceutics14091931. [PMID: 36145679 PMCID: PMC9506479 DOI: 10.3390/pharmaceutics14091931] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/24/2022] [Accepted: 09/06/2022] [Indexed: 11/16/2022] Open
Abstract
Ocular drug delivery has been significantly advanced for not only pharmaceutical compounds, such as steroids, nonsteroidal anti-inflammatory drugs, immune modulators, antibiotics, and so forth, but also for the rapidly progressed gene therapy products. For conventional non-gene therapy drugs, appropriate surgical approaches and releasing systems are the main deliberation to achieve adequate treatment outcomes, whereas the scope of “drug delivery” for gene therapy drugs further expands to transgene construct optimization, vector selection, and vector engineering. The eye is the particularly well-suited organ as the gene therapy target, owing to multiple advantages. In this review, we will delve into three main aspects of ocular drug delivery for both conventional drugs and adeno-associated virus (AAV)-based gene therapy products: (1) the development of AAV vector systems for ocular gene therapy, (2) the innovative carriers of medication, and (3) administration routes progression.
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Grassiri B, Cesari A, Balzano F, Migone C, Kali G, Bernkop-Schnürch A, Uccello-Barretta G, Zambito Y, Piras AM. Thiolated 2-Methyl-β-Cyclodextrin as a Mucoadhesive Excipient for Poorly Soluble Drugs: Synthesis and Characterization. Polymers (Basel) 2022; 14:polym14153170. [PMID: 35956685 PMCID: PMC9370929 DOI: 10.3390/polym14153170] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 07/30/2022] [Accepted: 07/31/2022] [Indexed: 02/01/2023] Open
Abstract
Thiolated cyclodextrins are structurally simple mucoadhesive macromolecules, which are able to host drugs and increase their apparent water solubility, as well as interact with the mucus layer prolonging drug residence time on the site of absorption. The aim of this study was to synthesize through green microwave-assisted process a freely soluble thiolated 2-methyl-β-cyclodextrin (MβCD-SH). Its inclusion complex properties with dexamethasone (Dex), a poor water soluble drug, and mucoadhesive characteristics were also determined. The product was deeply characterized through NMR spectroscopy (2D COSY, 2D HSQC, 1D/2D TOCSY, and 1D ROESY), showing a thiolation degree of 67%, a selective thiolation on the C6 residues and a monomeric structure. The association constant of MβCD and MβCD-SH with Dex resulted in 2514.3 ± 32.3 M−1 and 2147.0 ± 69.3 M−1, respectively, indicating that both CDs were able to host the drug. Microrheological analysis of mucin in the presence of MBCD-SH showed an increase of complex viscosity, G′ and G″, due to disulphide bond formation. The cytotoxicity screening on fibroblast BALB/3T3 clone A31 cells indicated an IC50 of 27.7 mg/mL and 30.0 mg/mL, for MβCD and MβCD-SH, respectively. Finally, MβCD-SH was able to self-assemble in water into nanometric structures, both in the presence and absence of the complexed drug.
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Affiliation(s)
- Brunella Grassiri
- Department of Pharmacy, University of Pisa, Via Bonanno 33, 56126 Pisa, Italy; (B.G.); (C.M.); (Y.Z.)
| | - Andrea Cesari
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy;
| | - Federica Balzano
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 13, 56124 Pisa, Italy; (F.B.); (G.U.-B.)
| | - Chiara Migone
- Department of Pharmacy, University of Pisa, Via Bonanno 33, 56126 Pisa, Italy; (B.G.); (C.M.); (Y.Z.)
| | - Gergely Kali
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria; (G.K.); (A.B.-S.)
| | - Andreas Bernkop-Schnürch
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria; (G.K.); (A.B.-S.)
| | - Gloria Uccello-Barretta
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 13, 56124 Pisa, Italy; (F.B.); (G.U.-B.)
| | - Ylenia Zambito
- Department of Pharmacy, University of Pisa, Via Bonanno 33, 56126 Pisa, Italy; (B.G.); (C.M.); (Y.Z.)
- Interdepartmental Research Centre “Nutraceuticals and Food for Health”, University of Pisa, 56100 Pisa, Italy
| | - Anna Maria Piras
- Department of Pharmacy, University of Pisa, Via Bonanno 33, 56126 Pisa, Italy; (B.G.); (C.M.); (Y.Z.)
- Correspondence: ; Tel.: +39-3392221213
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Lamoudi L, Akretche S, Hadjsadok A, Daoud K. Fusidic Acid Microemulsion Based on a Pseudoternary Phase Diagram: Development, Characterization, and Evaluation. J Pharm Innov 2022. [DOI: 10.1007/s12247-022-09668-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Lee K, Lee G, Lee S, Park CY. Advances in ophthalmic drug delivery technology for postoperative management after cataract surgery. Expert Opin Drug Deliv 2022; 19:945-964. [PMID: 35917497 DOI: 10.1080/17425247.2022.2109624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Cataract surgery is becoming more common due to an aging world population. Intraocular lenses and surgical technique have developed remarkably recently, but the development of postoperative medication to prevent postsurgery complications has been relatively delayed. We still largely depend on eye drops for the management of post-cataract-surgery patients. Mental and physical problems that often occur in elderly cataract patients make it difficult for patients to apply eye drops by themselves. It is necessary to develop new effective drug delivery methods. AREAS COVERED This updated review article provides a brief review of why drug management is needed following cataract surgery and an overview of current developments in new drug delivery methods for ophthalmic treatment. In particular, various novel drug delivery methods that can be used for post-cataract-surgery management and their current development stages are extensively reviewed. EXPERT OPINION Rapidly developing technologies, such as intraocular and external ophthalmic implants, polymers, and nanotechnology, are being actively applied to develop novel drug delivery systems for safe and effective management after cataract surgery. Their goal is to achieve sufficient drug release for the desired duration with a single application. These will largely replace the inconvenience of eye drops for elderly patients in the future.
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Affiliation(s)
- Kangmin Lee
- Department of Ophthalmology, Dongguk University, Ilsan Hospital, Goyang, South Korea
| | - Gahye Lee
- Department of Ophthalmology, Dongguk University, Ilsan Hospital, Goyang, South Korea
| | - Soomin Lee
- Department of Ophthalmology, Dongguk University, Ilsan Hospital, Goyang, South Korea
| | - Choul Yong Park
- Department of Ophthalmology, Dongguk University, Ilsan Hospital, Goyang, South Korea
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Fabiano A, De Leo M, Cerri L, Piras AM, Braca A, Zambito Y. Saffron extract self-assembled nanoparticles to prolong the precorneal residence of crocin. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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González Cela Casamayor MA, López Cano JJ, Andrés Guerrero V, Herrero Vanrell R, Benítez Del Castillo JM, Molina Martínez IT. A novel osmoprotective liposomal formulation from synthetic phospholipids to reduce in vitro hyperosmolar stress in dry eye treatments. J Liposome Res 2022:1-12. [PMID: 35706400 DOI: 10.1080/08982104.2022.2087083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Dry eye disease (DED) is a worldwide, multifactorial disease mainly caused by a deficit in tear production or increased tear evaporation with an increase in tear osmolarity and inflammation. This causes discomfort and there is a therapeutic need to restore the homeostasis of the ocular surface. The aim of the present work was to develop a biodegradable and biocompatible liposomal formulation from the synthetic phospholipids 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) and 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) that is able to reduce the effects of hypertonic stress by helping to restore the lipid layer of the tear film. Liposomes were made using the lipid film hydration method with synthetic phospholipids (10 mg/mL) with and without 0.2% HPMC. They were characterised in terms of size, osmolarity, pH, surface tension, and viscosity. Additionally, the in vitro toxicity of the formulation at 1 and 4 h in human corneal epithelial cells (hTERT-HCECs) and human conjunctival cells (IM-HConEpiC) was determined. Furthermore, osmoprotective activity was tested in a corneal model of hyperosmolar stress. In vivo acute tolerance testing was also carried out in albino New Zealand rabbits by topical application of the ophthalmic formulations every 30 min for 6 h. All the assayed formulations showed suitable physicochemical characteristics for ocular surface administration. The liposomal formulations were well-tolerated in cell cultures and showed osmoprotective activity in a hyperosmolar model. No alterations or discomfort were reported when they were topically administered in rabbits. According to the results, the osmoprotective liposomal formulations developed in this work are promising candidates for the treatment of DED.
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Affiliation(s)
- Miriam Ana González Cela Casamayor
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain
| | - José Javier López Cano
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain
| | - Vanessa Andrés Guerrero
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain.,University Institute of Industrial Pharmacy (IUFI), Facultad de Farmacia, Universidad Complutense de Madrid, Spain
| | - Rocío Herrero Vanrell
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain.,University Institute of Industrial Pharmacy (IUFI), Facultad de Farmacia, Universidad Complutense de Madrid, Spain
| | - José Manuel Benítez Del Castillo
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Ocular Surface and Inflammation Unit (USIO), Departamento de Inmunología, Oftalmología y OLR, Hospital Clínico San Carlos, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain
| | - Irene Teresa Molina Martínez
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain.,University Institute of Industrial Pharmacy (IUFI), Facultad de Farmacia, Universidad Complutense de Madrid, Spain
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Polat HK, Kurt N, Aytekin E, Akdağ Çaylı Y, Bozdağ Pehlivan S, Çalış S. Design of Besifloxacin HCl-Loaded Nanostructured Lipid Carriers: In Vitro and Ex Vivo Evaluation. J Ocul Pharmacol Ther 2022; 38:412-423. [PMID: 35675672 DOI: 10.1089/jop.2022.0008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Objective: In the treatment of severe cases of bacterial keratitis, conventional eye drops containing antibiotics should be applied daily and very frequently. The aim of this study is to develop low-dose high-effect formulations with the prepared nanostructured lipid carrier (NLC) formulations to reduce antibiotic resistance and increase patient compliance. Methods: NLC formulations were loaded with besifloxacin HCl (BHL) and the besifloxacin HCl: sulfobutyl ether beta-cyclodextrin (SBE-CD) complex. Positive charge was gained with chitosan, and corneal permeation and resolubility were increased with SBE-CD. In vitro characterization studies, permeability studies, and cytotoxicity and ex vivo transport studies were carried out. Results: In this study, it was found that SBE-CD increased BHL's solubility by 8-fold based on phase solubility studies. The optimized NLCs were small in size (13.63-16.09 nm) with a low polydispersity index (0.107-0.181) and adequate BHL drug loading efficiency. In vitro release studies showed that formulations were released approximately for 8 h and at levels over the minimum inhibitory concentration of Pseudomonas aeruginosa and Staphylococcus aureus. NLC formulations had a better corneal permeation rate than the marketed product during 6 h of ex vivo studies. Conclusions: According to in vitro and ex vivo data, it was determined that the most favorable NLC formulation was the formulation containing BHL/SBE-CD that was covered with chitosan. It has the highest drug loading capacity and one of the highest ex vivo corneal passage levels, along with desired drug release. The formulation containing BHL/SBE-CD and chitosan can be a potential alternative for the treatment of bacterial keratitis.
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Affiliation(s)
- Heybet Kerem Polat
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey.,Department of Pharmaceutical Technology, Faculty of Pharmacy, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Nihat Kurt
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey.,Department of Pharmaceutical Technology, Faculty of Pharmacy, Tokat Gaziosmanpaşa University, Tokat, Turkey
| | - Eren Aytekin
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
| | - Yagmur Akdağ Çaylı
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
| | - Sibel Bozdağ Pehlivan
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
| | - Sema Çalış
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
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