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Chitosan-Based Ocular Drug Delivery Systems

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Abstract

Chitosan is widely used in ocular drug delivery systems due to its biocompatibility, biodegradability, and favorable physicochemical characteristics. Chitosan-based ocular drug delivery systems are widely reported to improve the bioavailability at the anterior/posterior pole of the eye due to its mucoadhesive property that helps to increase efficacy of existing ocular drugs, affords stimuli responsive/targeted-based delivery regimen, enhances the corneal permeability, and improves the accumulation of drugs in the corneal/conjunctival epithelia for an extended period of time. This review summarizes the major ocular diseases affecting the eye, ocular delivery systems, novel ocular drug delivery systems, intraocular drug transport barriers, and ocular transporters. The utilization of chitosan toward the ocular drug delivery systems such as stimuli responsive systems, targeted delivery systems, and gene-based delivery systems is also discussed.

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Abbreviations

AMD:

Age-related macular degeneration

BBS:

Bardet-Biedl syndrome

CS:

Chitosan

CS-NP:

Chitosan nanoparticle

JNK:

C-jun NH2 terminal kinase

CSL-NPs:

Core-shell liponanoparticles

CMV:

Cytomegalovirus

DR:

Diabetic retinopathy

DAG:

Diacylglycerol

DES:

Diethyl squarate

EPR:

Enhanced permeability and retention effect

EGDE:

Ethylene glycol diglycidyl ether

HA:

Hyaluronan

LCA:

Leber congenital amaurosis

LCA2:

Leber congenital amaurosis type 2

LCST:

Lower critical solution temperature

NPs:

Nanoparticles

NF- κB:

Nuclear factor-kappa B

PLGA:

Poly(lactic-co-glycolic acid)

PARP:

Poly(adenosine diphosphate-ribose) polymerase-1

PEG:

Polyethylene glycol

PKC:

Protein kinase C

QUR:

Quercetin

RAS:

Renin-angiotensin-aldosterone system

RES:

Resveratrol

RP:

Retinitis pigmentosa

RPE:

Retinal pigment epithelium

ROCK:

Rho-associated protein kinase

SEM:

Scanning electron microscopy

SARM:

Selective androgen receptor modulators

SERM:

Selective estrogen receptor modulators

SNP:

Self-assembled nanoparticles

TDDS:

Targeted drug delivery system

VEGF:

Vascular endothelial growth factor

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© 2019 Springer Nature Singapore Pte Ltd.

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Natesan, S., Krishnaswami, V., Thekkila Veedu, S., Pathayappurakkal Mohanan, D., Ruckmani, K., Palanichamy, R. (2019). Chitosan-Based Ocular Drug Delivery Systems. In: Jana, S., Jana, S. (eds) Functional Chitosan. Springer, Singapore. https://doi.org/10.1007/978-981-15-0263-7_4

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