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- W4282842842 abstract "Oral administration of cholesterol-lowering statins, HMG-CoA reductase inhibitors, is associated with beneficial effects on eye conditions. This work aims to design contact lenses (CLs) that can sustainedly deliver pravastatin and thus improve the ocular efficacy while avoiding systemic side effects of statins. Bioinspired hydrogels were prepared with monomers that resemble hydrophobic (ethylene glycol phenyl ether methacrylate) and amino (2-aminoethyl methacrylamide hydrochloride) functionalities of the active site of HMG-CoA. Best performing CLs loaded >6 mg/g, in vitro fulfilled the release demands for daily wearing, and showed anti-inflammatory activity (lowering TNF-α). High hydrostatic pressure sterilization preserved the stability of both the drug and the hydrogel network. Ex vivo tests revealed the ability of pravastatin to accumulate in cornea and sclera and to penetrate through transscleral route. In vivo tests (rabbits) confirmed that, compared to eye drops and for the same dose, CLs provided significantly higher pravastatin levels in tear fluid within 1 to 7 h of wearing. Moreover, after 8 h wearing pravastatin was present in cornea, sclera, aqueous humour and vitreous humour. Strong correlations between percentages of drug released in vitro and in vivo were found. Effects of volume and proteins on release rate and Levy plots were identified." @default.
- W4282842842 created "2022-06-15" @default.
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- W4282842842 date "2022-08-01" @default.
- W4282842842 modified "2023-10-18" @default.
- W4282842842 title "Contact lenses for pravastatin delivery to eye segments: Design and in vitro-in vivo correlations" @default.
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- W4282842842 doi "https://doi.org/10.1016/j.jconrel.2022.06.001" @default.
- W4282842842 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35688348" @default.
- W4282842842 hasPublicationYear "2022" @default.
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