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- W2048320403 abstract "Aim: The aim of this study was to evaluate methylprednisolone penetration into ocular structures after low-current trans-scleral hydrogel iontophoresis, as compared with the common intravenous (i.v.) treatment. Methods: Methylprednisolone hemisuccinate (MPH) iontophoresis was studied in rabbits, using drug-loaded hydrogels mounted on a portable iontophoretic device. Cathodal iontophoresis of 2.6 mA/cm2 was applied for 5 min at two opposite sites on the sclera or for 10 min at the same site. Ocular drug levels were determined 2 h after iontophoretic treatment, then compared to mock iontophoresis and i.v. infusion of 10 mg/kg methylprednisolone. Results: Significantly higher methylprednisolone levels were found in ocular tissues after iontophoresis, compared with the control groups, except for the sclera concentrations, which were similar to the concentrations achieved after mock iontophoresis. Two (2) h after the trans-scleral iontophoretic treatment, 178.59 ± 21.63 μg/g, 6.74 ± 2.38 μg/ml, and 2.71 ± 0.57 μg/mL were found in the retina, aqueous humor, and vitreous, respectively. No significant differences were found between one or two site treatments of trans-scleral iontophoresis. Nondetectable concentrations were found 2 h after the i.v. infusion of 10 mg/kg of methylprednisolone in all evaluated ocular tissues and fluids. Conclusions: A short, low-current noninvasive iontophoretic treatment, using methylpred-nisolone-loaded hydrogels, has potential clinical value in treating ocular inflammatory diseases." @default.
- W2048320403 created "2016-06-24" @default.
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- W2048320403 date "2008-06-01" @default.
- W2048320403 modified "2023-10-16" @default.
- W2048320403 title "Methylprednisolone Delivery to the Back of the Eye using Hydrogel Iontophoresis" @default.
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- W2048320403 doi "https://doi.org/10.1089/jop.2007.0097" @default.
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