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Tripathi S, Yadav KS. Development of brimonidine niosomes laden contact lenses for extended release and promising delivery system in glaucoma treatment. Daru 2024; 32:161-175. [PMID: 38158475 PMCID: PMC11087387 DOI: 10.1007/s40199-023-00500-z] [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: 05/11/2023] [Accepted: 12/14/2023] [Indexed: 01/03/2024] Open
Abstract
BACKGROUND Increased intraocular pressure is a common symptom of glaucoma. In severe circumstances, it may result in loss of eyesight. Glaucoma treatment is difficult due to ocular physiological barriers that prevent medications from reaching the afflicted area. Traditional formulations (eye drops) have a short residence period and are rapidly drained away via the nasolacrimal duct, resulting in increased adverse drug responses and lower efficacy. The usage of nanoparticles such as niosomes could be one potential answer to these problems. While niosomes improve drug penetration, they have little effect on ocular retention of the medication. Contact lenses containing niosomes can assist to overcome this disadvantage. OBJECTIVE This study aims to prepare and evaluate Brimonidine niosomes laden contact lenses for the treatment of Glaucoma. METHODS Brimonidine niosomes were prepared using thin film hydration method and evaluated. The contact lenses were soaked in the niosomal formulation at varying intervals (3-10 days). Thereafter, the contact lenses were evaluated for %transmittance, %swelling index, drug quantification and in vitro drug release. The pharmacodynamic studies were conducted to assess the reduction in intraocular pressure (IOP) in albino rabbits. The research compared the results of the reduction in intraocular pressure caused by Brimonidine niosomes laden contact lenses with a marketed preparation of niosomes. RESULTS Higher concentration of the drug was loaded in contact lenses loaded with Brimonidine niosomes compared to the marketed formulation, by soaking method. The contact lenses exhibited an optimal %transmittance of 98.02 ± 0.36 and %swelling index of 50.35 ± 0.57. Increase in the soaking time up to 7 days led to an increase in the drug concentration in the contact lenses. However, no further increase was observed after the 7th day due to saturation of the contact lenses. Brimonidine niosomes laden contact lenses provided a reduction in intraocular pressure that was similar to the marketed preparation. Further, the contact lenses provided extended release up to 20 h. CONCLUSION Brimonidine niosomes laden contact lenses exhibited superior drug loading through the soaking method, displaying optimal %transmittance and %swelling index. Soaking for 7 days increased drug concentration in contact lenses with no further increase due to saturation. These lenses reduced intraocular pressure like the marketed formulation, offering extended release for 20 h.
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Affiliation(s)
- Shresthi Tripathi
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM'S NMIMS (Deemed to Be University), Mumbai, India
| | - Khushwant S Yadav
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM'S NMIMS (Deemed to Be University), Mumbai, India.
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Yang H, Zhang F, Fan Y, Zhang J, Fang T, Xing D, Zhen Y, Nie Z, Liu Y, Wang D, Li J. Co-delivery of Brinzolamide and Timolol from Micelles-laden Contact Lenses: In vitro and In Vivo Evaluation. Pharm Res 2024; 41:531-546. [PMID: 38366235 DOI: 10.1007/s11095-024-03672-8] [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: 10/16/2023] [Accepted: 01/28/2024] [Indexed: 02/18/2024]
Abstract
PURPOSE Traditional eye drops exhibit a modest bioavailability ranging from 1 to 5%, necessitating recurrent application. Thus, a contact lens-based drug delivery system presents substantial benefits. Nonetheless, pharmaceutical agents exhibiting poor solubility may compromise the quintessential characteristics of contact lenses and are, consequently, deemed unsuitable for incorporation. To address this issue, the present study has engineered a novel composite drug delivery system that amalgamates micellar technology with contact lenses, designed specifically for the efficacious conveyance of timolol and brinzolamide. METHODS Utilizing mPEG-PCL as the micellar material, this study crafted mPEG-PCL micelles loaded with brinzolamide and timolol through the film hydration technique. The micelle-loaded contact lens was fabricated employing the casting method; a uniform mixture of HEMA and EGDMA with the mPEG-PCL micelles enshrouding brinzolamide and timolol was synthesized. Following the addition of a photoinitiator, 50 μL of the concoction was deposited into a contact lens mold. Subsequently, the assembly was subjected to polymerization under 365 nm ultraviolet light for 35 min, resulting in the formation of the micelle-loaded contact lenses. RESULTS In the present article, we delineate the construction of a micelle-loaded contact lens designed for the administration of brinzolamide and timolol in the treatment of glaucoma. The study characterizes crucial properties of the micelle-loaded contact lenses, such as transmittance and ionic permeability. It was observed that these vital attributes meet the standard requirements for contact lenses. In vitro release studies revealed that timolol and brinzolamide could be gradually liberated over periods of up to 72 and 84 h, respectively. In vivo pharmacodynamic evaluation showed a significant reduction in intraocular pressure and a relative bioavailability of 10.84 times that of commercially available eye drops. In vivo pharmacokinetic evaluation, MRT was significantly increased, and the bioavailability of timolol and brinzolamide was 2.71 and 1.41 times that of eye drops, respectively. Safety assessments, including in vivo irritation, histopathological sections, and protein adsorption studies, were conducted as per established protocols, confirming that the experiments were in compliance with safety standards. IN CONCLUSION The manuscript delineates the development of a safe and efficacious micelle-loaded contact lens drug delivery system, which presents a novel therapeutic alternative for the management of glaucoma.
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Affiliation(s)
- Hongyu Yang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, People's Republic of China
| | - Faxing Zhang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, People's Republic of China
| | - Yingzhen Fan
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, People's Republic of China
| | - Jian Zhang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, People's Republic of China
| | - Ting Fang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, People's Republic of China
| | - Dandan Xing
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, People's Republic of China
| | - Yanli Zhen
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, People's Republic of China
| | - Zhihao Nie
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, People's Republic of China
| | - Yaming Liu
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, People's Republic of China
| | - Dongkai Wang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, People's Republic of China.
| | - Ji Li
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, People's Republic of China.
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Sun H, Wang G, Feng Q, Liu S. Polymer-Based Self-Assembled Drug Delivery Systems for Glaucoma Treatment: Design Strategies and Recent Advances. Polymers (Basel) 2023; 15:4466. [PMID: 38006190 PMCID: PMC10675782 DOI: 10.3390/polym15224466] [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: 09/14/2023] [Revised: 10/17/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
Glaucoma has become the world's leading cause of irreversible blindness, and one of its main characteristics is high intraocular pressure. Currently, the non-surgical drug treatment scheme to reduce intraocular pressure is a priority method for glaucoma treatment. However, the complex and special structure of the eye poses significant challenges to the treatment effect and safety adherence of this drug treatment approach. To address these challenges, the application of polymer-based self-assembled drug delivery systems in glaucoma treatment has emerged. This review focuses on the utilization of polymer-based self-assembled structures or materials as important functional and intelligent carriers for drug delivery in glaucoma treatment. Various drug delivery systems, such as eye drops, hydrogels, and contact lenses, are discussed. Additionally, the review primarily summarizes the design strategies and methods used to enhance the treatment effect and safety compliance of these polymer-based drug delivery systems. Finally, the discussion delves into the new challenges and prospects of employing polymer-based self-assembled drug delivery systems for the treatment of glaucoma.
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Affiliation(s)
- Hao Sun
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China;
- Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450000, China
| | - Guangtong Wang
- Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450000, China
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150080, China
| | - Qingying Feng
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, China;
| | - Shaoqin Liu
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China;
- Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450000, China
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150080, China
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Zhu Y, Li S, Li J, Falcone N, Cui Q, Shah S, Hartel MC, Yu N, Young P, de Barros NR, Wu Z, Haghniaz R, Ermis M, Wang C, Kang H, Lee J, Karamikamkar S, Ahadian S, Jucaud V, Dokmeci MR, Kim HJ, Khademhosseini A. Lab-on-a-Contact Lens: Recent Advances and Future Opportunities in Diagnostics and Therapeutics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108389. [PMID: 35130584 PMCID: PMC9233032 DOI: 10.1002/adma.202108389] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 01/27/2022] [Indexed: 05/09/2023]
Abstract
The eye is one of the most complex organs in the human body, containing rich and critical physiological information (e.g., intraocular pressure, corneal temperature, and pH) as well as a library of metabolite biomarkers (e.g., glucose, proteins, and specific ions). Smart contact lenses (SCLs) can serve as a wearable intelligent ocular prosthetic device capable of noninvasive and continuous monitoring of various essential physical/biochemical parameters and drug loading/delivery for the treatment of ocular diseases. Advances in SCL technologies and the growing public interest in personalized health are accelerating SCL research more than ever before. Here, the current status and potential of SCL development through a comprehensive review from fabrication to applications to commercialization are discussed. First, the material, fabrication, and platform designs of the SCLs for the diagnostic and therapeutic applications are discussed. Then, the latest advances in diagnostic and therapeutic SCLs for clinical translation are reviewed. Later, the established techniques for wearable power transfer and wireless data transmission applied to current SCL devices are summarized. An outlook, future opportunities, and challenges for developing next-generation SCL devices are also provided. With the rise in interest of SCL development, this comprehensive and essential review can serve as a new paradigm for the SCL devices.
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Affiliation(s)
- Yangzhi Zhu
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Shaopei Li
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Jinghang Li
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
- School of Engineering, Westlake University, Hangzhou, Zhejiang Province, 310024, China
- School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan, Hubei Province, 430205, China
| | - Natashya Falcone
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Qingyu Cui
- Department of Medicine, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Shilp Shah
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Martin C Hartel
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Ning Yu
- Department of Chemical and Environmental Engineering, University of California-Riverside, Riverside, CA, 92521, USA
| | - Patric Young
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | | | - Zhuohong Wu
- Department of Nanoengineering, University of California-San Diego, San Diego, CA, 92093, USA
| | - Reihaneh Haghniaz
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Menekse Ermis
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Canran Wang
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Heemin Kang
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Junmin Lee
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | | | - Samad Ahadian
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Vadim Jucaud
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Mehmet R Dokmeci
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Han-Jun Kim
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
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Agnifili L, Sacchi M, Figus M, Posarelli C, Lizzio RAU, Nucci P, Mastropasqua L. Preparing the ocular surface for glaucoma filtration surgery: an unmet clinical need. Acta Ophthalmol 2022; 100:740-751. [PMID: 35088941 DOI: 10.1111/aos.15098] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 12/07/2021] [Accepted: 12/29/2021] [Indexed: 12/16/2022]
Abstract
The mutual relationship among medical therapy, ocular surface (OS) and filtration surgery (FS) represents one of the most crucial issues in glaucoma management. As the long-term use of intraocular pressure-lowering medications significantly affect the OS health, patients with an uncontrolled disease frequently undergo glaucoma surgery in less-than-ideal conditions. As we known, OS changes strongly affect the post-operative bleb filtration capability. Therefore, improving the OS conditions before proceeding with FS is needed. Currently, given the rapid diffusion of new surgical procedures, this need is even more perceived. Nevertheless, despite surgeons retain the OS preparation of primary importance, and recognize the OS disease (OSD) as the only modifiable risk factor for filtration failure, there is no agreement on which strategies should be preferred to prepare patients. This is largely due to the lack of validated guidelines, which forces clinicians to adopt personal approaches based on evidence derived from low-quality studies. In this review, we provided an overview of risk factors involved in the FS failure, with particular attention to those depending on OS changes, and how OSD negatively affects the aqueous humor resorption after surgery. Moreover, we reported the most exploited measures to mitigate the OSD before surgery, the possible reasons underlying the absence of shared approaches, and the upcoming area of intervention to preserve the OS health during glaucoma management. Finally, based on the current evidence, we proposed a pre-operative outline reporting the main risk factors that should be considered before surgery, and the therapeutical options available to improve the OS.
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Affiliation(s)
- Luca Agnifili
- Department of Medicine and Ageing Science, Ophthalmology Clinic University ‘G. D'Annunzio’ of Chieti‐Pescara Pescara Italy
| | - Matteo Sacchi
- San Giuseppe Hospital, University Eye Clinic IRCCS Multimedica Milan Italy
| | - Michele Figus
- Ophthalmology Unit, Department of Surgery, Medicine, Molecular and Emergency University of Pisa Pisa Italy
| | - Chiara Posarelli
- Ophthalmology Unit, Department of Surgery, Medicine, Molecular and Emergency University of Pisa Pisa Italy
| | | | - Paolo Nucci
- Department of Clinical Science and Community Health University of Milan Milan Italy
| | - Leonardo Mastropasqua
- Department of Medicine and Ageing Science, Ophthalmology Clinic University ‘G. D'Annunzio’ of Chieti‐Pescara Pescara Italy
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Li Q, Ma C, Ma Y, Ma Y, Mao Y, Meng Z. Sustained bimatoprost release using gold nanoparticles laden contact lenses. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:1618-1634. [PMID: 33980134 DOI: 10.1080/09205063.2021.1927656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Contact lenses are ideally suited for sustained ocular drug delivery to bypass the issues associated with eye drop therapy. However, drugs such as bimatoprost loaded by the conventional soaking method show poor drug uptake, high burst release, and altered critical lens properties. In this study, the effect of gold nanoparticles (GNPs) on bimatoprost loading/uptake from the soaking solution and its release kinetics from the lens was investigated. In one method, GNP solutions of varying strength were loaded into the bimatoprost soaking solution (mM-SS batches), and in another method, the GNPs were included in the contact lens matrix during casting (mM-GN-L batches). The GNPs were spherical with average size of 21.1 nm and -20.1 mV zeta potential. The swelling, oxygen permeability, and optical transmittance of the lens were improved compared to those of the lens drug-loaded by the conventional soaking method (SM-L). The mM-GN-L batches showed significant improvement in drug uptake from the soaking solution compared to the SM-L and mM-SS batches. The in vitro studies showed relatively low burst and sustained bimatoprost release up to 72 h compared to 24 h with the SM-L batch. The ability to sustain drug release improved proportionally with an increase in the amount of GNPs in the lens. The presence of GNPs lowered protein adherence. The GNP-laden lenses were deemed safe in ocular irritation and histopathology reports (rabbit model). Further, they showed higher drug retention in the rabbit tear fluid compared to the SM-L lens. In conclusion, the presence of GNPs in contact lenses increased drug uptake from the soaking solution, and improved the in vitro and in vivo release kinetics without affecting the critical properties of the contact lenses for therapeutic application.
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Affiliation(s)
- Qiong Li
- Department of Ophthalmology, The Third People's Hospital of Yinchuan, Yinchuan City, Ningxia Hui Autonomous Region, China
| | - Cheng Ma
- Department of Ophthalmology, The 942 Hospital of Chinese PLA, Yinchuan City, Ningxia Hui Autonomous Region, China
| | - Yingpeng Ma
- Department of Ophthalmology, The 942 Hospital of Chinese PLA, Yinchuan City, Ningxia Hui Autonomous Region, China
| | - Yiping Ma
- Outpatient Department, Ningxia Armed Police Corps Hospital, Yinchuan City, Ningxia Hui Autonomous Region, China
| | - Yan Mao
- Department of Ophthalmology, The 942 Hospital of Chinese PLA, Yinchuan City, Ningxia Hui Autonomous Region, China
| | - Zelan Meng
- Department of Ophthalmology, The 942 Hospital of Chinese PLA, Yinchuan City, Ningxia Hui Autonomous Region, China
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