Sustained release of proteins from contact lenses with porous annulus.
Biologics
Contact lenses
Hydrogel
Hydroxyethyl methacrylate
Modeling
Ophthalmic drug delivery
Proteins
Journal
Drug delivery and translational research
ISSN: 2190-3948
Titre abrégé: Drug Deliv Transl Res
Pays: United States
ID NLM: 101540061
Informations de publication
Date de publication:
14 Oct 2024
14 Oct 2024
Historique:
accepted:
24
09
2024
medline:
15
10
2024
pubmed:
15
10
2024
entrez:
14
10
2024
Statut:
aheadofprint
Résumé
Ophthalmic drugs are administered to the front of the eye by eyedrops. The bioavailability of drugs delivered via eye drops is low due to tear turnover. Contact lenses can address some deficiencies of eye drops by sustaining the delivery of drugs, but commercial contact lenses have small pore sizes that cannot load biologics, which are becoming more common for treating ophthalmic diseases. This study aims to investigate novel poly(hydroxyethyl methacrylate) (pHEMA) lenses with transparent center and porous annulus for sustained release of model proteins. A novel hydrogel polymerization process was used to fabricate concentric, porous layer pHEMA hydrogel rods. The hydrogels were lathe cut into contact lenses which were explored for the delivery of proteins and gold nanoparticles. Lenses were characterized by partition coefficient and diffusivity, which was estimated by fitting experimental data to an analytical model. Transmittance measurements were made to compare transparency of porous lens centers to commercial contact lenses. Porous pHEMA lenses consisting of a concentric, porous layer made from 55% water content in precursor were successfully lathe cut into lenses with transparent center and opaque porous annulus. The porous lenses could load large model proteins of bovine serum albumin and human γ-globulin and provide sustained release. The core annular pHEMA contact lenses consisting of an outer annulus of opaque, porous pHEMA and an inner, center layer of clear, nonporous pHEMA can provide sustained delivery of biologics.
Identifiants
pubmed: 39402394
doi: 10.1007/s13346-024-01720-9
pii: 10.1007/s13346-024-01720-9
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Office of Dietary Supplements
ID : R01EY034477
Informations de copyright
© 2024. Controlled Release Society.
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