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- W2558522085 abstract "This study investigates potentials of solid lipid nanoparticles (SLN)-based gel for transdermal delivery of tenoxicam (TNX) and describes a pharmacokinetic–pharmacodynamic (PK–PD) modeling approach for predicting concentration–time profile in skin. A 23 factorial design was adopted to study the effect of formulation factors on SLN properties and determine the optimal formulation. SLN-gel tolerability was investigated using rabbit skin irritation test. Its anti-inflammatory activity was assessed by carrageenan-induced rat paw edema test. A published Hill model for in vitro inhibition of COX-2 enzyme was fitted to edema inhibition data. Concentration in skin was represented as a linear spline function and coefficients were estimated using non-linear regression. Uncertainty in predicted concentrations was assessed using Monte Carlo simulations. The optimized SLN was spherical vesicles (58.1 ± 3.1 nm) with adequate entrapment efficiency (69.6 ± 2.6%). The SLN-gel formulation was well-tolerated. It increased TNX activity and skin level by 40 ± 13.5, and 227 ± 116%, respectively. Average Cmax and AUC0–24 predicted by the model were 2- and 3.6-folds higher than the corresponding values computed using in vitro permeability data. SLN-gel is a safe and efficient carrier for TNX across skin in the treatment of inflammatory disorders. PK–PD modeling is a promising approach for indirect quantitation of skin deposition from PD activity data." @default.
- W2558522085 created "2016-12-08" @default.
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- W2558522085 date "2016-12-20" @default.
- W2558522085 modified "2023-10-15" @default.
- W2558522085 title "Development of a nanogel formulation for transdermal delivery of tenoxicam: a pharmacokinetic–pharmacodynamic modeling approach for quantitative prediction of skin absorption" @default.
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- W2558522085 doi "https://doi.org/10.1080/03639045.2016.1268153" @default.
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