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• W2884295928 abstract "To develop a nanoemulsion-nanoformulation in order to enhance brain bioavailability for Amiloride (Amilo) via intranasal (i.n.) drug delivery in the brain.Oleic Acid, Tween-20 and Carbitol were selected as oil, surfactant and co-surfactant, respectively. For nanoemulsion preparation, an aqueous micro titration method followed by a high energy ultra-sonication method was used whereas three-factor three-level central composite design was employed to get the best formulation. The independent variables selected for the optimization were %oil, % Surfactant and co-surfactant (Smix) and sonication time (seconds).Based on the constraints applied for independent and dependent variables, the optimized formulation was selected with 2.5% oil, 10% Smix and a sonication time of 45 s. The experimental values observed for dependent variables such as hydrodynamic diameter (nm), % transmittance and % cumulative drug release were found to be 89.36 ± 11.18 nm, 99.23 ± 0.84% and 80.36 ± 5.48%, respectively. Results showed; a spherical shape (transmission electron microscopy and scanning electron microscopy - assisted morphological characterization), polydispersity index (0.231 ± 0.018), zeta potential (-9.83 ± 0.12 mV), refractive index (1.38 ± 0.042), viscosity (41 ± 5 cp), pH (6.4 ± 0.18) and drug content of 98.28 ± 0.29%, for optimized Amiloride-loaded-Nanoemulsion (Amilo-NE). For bioavailability evaluation, ultra-performance liquid chromatography-mass spectroscopy based bioanalytical method was developed and validated for pharmacokinetics, biodistribution, brain-targeting efficiency (1992.67 ± 45.63%) and nose-to-brain transport (586.18 ± 11.63%) whereby an enhanced Amilo-brain bioavailability was observed as compared to intravenous administration (i.v.). Furthermore, Amilo-NE enhanced the treatment in seizure threshold i.e. both rodent models of epilepsy (increasing current electroshock and pentylenetetrazole) induced seizures in mice.A significant role of Amilo-NE as observed after high targeting potential and efficiency of the formulation supports the easy brain targeting for Amilo-NE." @default.
• W2884295928 created "2018-08-03" @default.
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• W2884295928 date "2018-07-23" @default.
• W2884295928 modified "2023-09-23" @default.
• W2884295928 title "RETRACTED ARTICLE: Impact of ultrasonication techniques on the preparation of novel Amiloride-nanoemulsion used for intranasal delivery in the treatment of epilepsy" @default.
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• W2884295928 doi "https://doi.org/10.1080/21691401.2018.1489826" @default.
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• W2884295928 hasPublicationYear "2018" @default.
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