Abstract
This work aimed to enhance the oral bioavailability of diacerein. The drug was incorporated in self-nanoemulsifying drug delivery system. Ternary phase diagrams were constructed using Capryol™90, Miglyol®812 and isopropyl myristate as oils, Tween®80 and Tween®20 as surfactants and PEG 200 and PEG 300 as co-surfactants. Among a total of 432 formulae, 17 formulae were clear. They were assessed for mean droplet size, polydispersity index (PDI), saturation solubility and transmission electron microscopy. Solid granules were obtained by adsorption on Aeroperl®300. Results for DSC, PXRD, and SEM of prepared granules revealed that diacerein was molecularly dispersed within the formula. Desirability factor was adopted to find the granules with maximum solubility, maximum dissolution efficiency, maximum dissolution rate and percentage of drug dissolved at 5 min and minimum dissolution time and Carr’s index. The optimized formula consisted of 10% Miglyol®812, 70% Tween®80 and 20% PEG 200 adsorbed to Aeroperl® 300 with a ratio of 2:1 preconcentrate:carrier. It recorded a 3.77-fold increase in bioavailability, compared to the marketed product. Such enhancement means lower doses and less gastrointestinal side effects.
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Abbreviations
- BCS:
-
Biopharmaceutics Classification System
- SNEDDS:
-
Self-nanoemulsifying drug delivery systems
- SNEG:
-
Self-nanoemulsifying granules
- MDS:
-
Mean droplet size
- PDI:
-
Polydispersity index
- TEM:
-
Transmission electron microscopy
- DSC:
-
Differential scanning calorimetry
- FTIR:
-
Fourier transform infrared spectroscopy
- PXRD:
-
Powder X-ray diffraction
- SEM:
-
Scanning electron microscopy
- D.E.0–30 :
-
Dissolution efficiency 30 min
- MDT:
-
Mean dissolution time
- Q 5 :
-
Percentage of drug released at time 5 min
- DR5 :
-
Dissolution rate during first 5 min of dissolution
- REC:
-
Research Ethics Committee
- LC-MS/MS:
-
Liquid chromatography–tandem mass spectrometry
- IS:
-
Internal standard
- HLB:
-
Hydrophilic–lipophilic balance
- IPM:
-
Isopropyl myristate
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The experiment protocol was accepted by the Research Ethics Committee of Faculty of Pharmacy, Cairo University, Cairo, Egypt (PI 911).
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Naseef, M.A., Ibrahim, H.K. & Nour, S.A.EK. Solid Form of Lipid-Based Self-Nanoemulsifying Drug Delivery Systems for Minimization of Diacerein Adverse Effects: Development and Bioequivalence Evaluation in Albino Rabbits. AAPS PharmSciTech 19, 3097–3109 (2018). https://doi.org/10.1208/s12249-018-1138-5
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DOI: https://doi.org/10.1208/s12249-018-1138-5