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- W2086392355 abstract "To investigate the feasibility of iontophoretic delivery of large molecules across buccal mucosa, and to establish its potential for enhanced drug delivery. Qualitative (6 h) and quantitative (8 and 36 h) assessment of porcine buccal mucosa, using a diffusion cell in vitro model, was carried out by fluorescent microscopy and UV/Vis spectroscopy respectively, with four fluorescently-labeled model species (3 and 10 kDa dextrans, 12 kDa parvalbumin and 66 kDa bovine serum albumin, BSA). Passive and iontophoresis parameters were obtained. The experimental iontophoresis data were compared with theoretical predictions. The two dextrans and parvalbumin showed enhanced permeation through buccal mucosa after anodal iontophoresis (1–6 h). Passive diffusion and cathodal iontophoresis resulted in minimal permeation. BSA could not be measured by either mode. Iontophoretic delivery profiles compared to passive delivery, had reduced time lags (30–50 versus ~270 min) and increased flux (~37 times faster). Time lag factor/enhancement ratio (TLF/ER) data confirmed that iontophoresis significantly enhanced permeation. The diffusion coefficients (D, passive) for dextrans were significantly higher than for parvalbumin, with the converse obtained for solubility (C0); permeability coefficients (P) were similar for all three species. Potential differences (V) for the two higher kDa species were significantly higher than for the lowest kDa species. Experimental and theoretical data were in reasonable agreement. The experimental and theoretical data, confirming enhanced delivery of the model species via iontophoresis, gave a suitable basis for its potential application in the mouth, in a clinical setting and opens pathways to further research for delivering precious drugs topically and systemically." @default.
- W2086392355 created "2016-06-24" @default.
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- W2086392355 date "2013-06-01" @default.
- W2086392355 modified "2023-10-10" @default.
- W2086392355 title "Electrically induced transport of macromolecules through oral buccal mucosa" @default.
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- W2086392355 doi "https://doi.org/10.1016/j.dental.2013.03.016" @default.
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