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Advancements in Nanodrug Delivery Systems as Controlled-Release Systems for Glaucoma Therapy: An Inspirational Step
Tanin Hosseinkhani1, Ahmad Karami2, Shahla Mirzaeei1,2
1Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran.
Abstract:
Glaucoma is a collection of disorders that result in permanent vision loss and is characterized by a gradual decline in retinal ganglion cells. While it may not always be high, intraocular pressure (IOP) is the sole risk factor that can be modified according to extensive clinical research. Glaucoma remains the leading cause of irreversible blindness, yet early treatment lowering intraocular pressure is effective in slowing the rate of visual deterioration. Issues like poor absorption, low bioavailability, and short drug resistance time have thus made the management of glaucoma challenging when using conventional ophthalmic drugs. Thus, extensive research has been conducted to explore specific nanodrug delivery systems from various nanocarriers such as nanoparticles, micelles, liposomes and nanofibers, with a focus on systems that have achieved drug release for more than 12 h. These carriers have demonstrated substantial improvements in a lot of the evaluated aspects: enhancing ocular barrier-crossing capabilities, improving bioavailability, prolonging drug release, targeting active tissues of interest, and reducing IOP. This review covers recent developments in nanocarrier ocular delivery systems regarding the management of glaucoma. In this study, the advantages and disadvantages of each system were evaluated and their potential for advancing translation from research to clinic were assessed.
Insights
Nanodrug delivery systems offer improved glaucoma treatment by enhancing bioavailability and prolonging drug release. These advanced carriers show promise for overcoming challenges associated with conventional eye drops for managing intraocular pressure.
Area of Science:
- Ophthalmology
- Nanotechnology
- Pharmacology
Background:
- Glaucoma causes irreversible vision loss due to retinal ganglion cell decline.
- Elevated intraocular pressure (IOP) is the primary modifiable risk factor for glaucoma.
- Conventional ophthalmic drugs face challenges like poor absorption and short drug retention.
Purpose of the Study:
- To review recent advancements in nanocarrier-based ocular drug delivery systems for glaucoma management.
- To evaluate the advantages and disadvantages of various nanocarriers.
- To assess the clinical translation potential of these nanodrug systems.
Main Methods:
- Review of recent developments in nanodrug delivery for glaucoma.
- Evaluation of nanocarriers including nanoparticles, micelles, liposomes, and nanofibers.
- Assessment of drug release profiles (specifically >12 hours) and ocular performance.
Main Results:
- Nanocarriers significantly improve ocular barrier penetration and bioavailability.
- These systems offer prolonged drug release, enhancing therapeutic efficacy.
- Nanodrug delivery systems demonstrate potential for targeted delivery and IOP reduction.
Conclusions:
- Nanodrug delivery systems represent a promising strategy to overcome limitations of conventional glaucoma treatments.
- Various nanocarriers show potential for improved patient outcomes and clinical application.
- Further research is needed to optimize nanocarrier systems for widespread clinical use in glaucoma management.
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