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DNA scaffold nanoparticles coated with HPMC/EC for oral delivery.
- Source :
-
International journal of pharmaceutics [Int J Pharm] 2019 May 01; Vol. 562, pp. 321-332. Date of Electronic Publication: 2019 Mar 27. - Publication Year :
- 2019
-
Abstract
- The control of the glycemic level among diabetes/T2 patients is very important for their long term survival and avoiding further complexities including micro/macrovascular diseases as well as diabetic neuropathy. Vildagliptin (VD) is a drug that has addressed these issues successfully with the desired safety portfolio. We used DNA-nanocubes for initial nano-encapsulation of VD followed by HPMC/EC coating. The results revealed the stable, smooth, spherical and nano-sized nanoparticles with improved size uniformity (from 100 to 400 nm in diameter) and encapsulation-efficiency (E.E.%) than previously reported (500-2000 nm) with the chemical compatibility evident in ATR/FTIR and DSC results. Animal experiments results revealed the improvement of incretin level in the serums due to potent DPP-4 inhibition compared to the free-VD/solution with better maintenance of glycemic levels after feeding. The safety of these HPMC/EC-DNA-VD nanoparticles was assessed through the histological-examination after completion of the treatment turn. The solvent evaporation technique provided the better coating of HPMC around DNA-core with gastro-resistant and effervescent property due to presence of NaHCO <subscript>3</subscript> (0.01%) in the formulations that caused delayed delivery of VD as well as nanoparticles to the intestine, increasing the availability time of the drug and nanospheres at the target sites (intestine and blood) where DPP-4 enzyme is most abundant (to degrade the GLP-1 and GIP causing loss of control of the postprandial glycemic levels. So the availability of sustained release nanospheres near the target sites and prolonged DPP-4 inhibition improved the outcomes of the therapy.<br /> (Copyright © 2019 Elsevier B.V. All rights reserved.)
- Subjects :
- Animals
Cellulose administration & dosage
Cellulose chemistry
Diabetes Mellitus, Experimental blood
Diabetes Mellitus, Experimental drug therapy
Drug Stability
Glucagon-Like Peptide 1 blood
Mice
Cellulose analogs & derivatives
DNA administration & dosage
DNA chemistry
Dipeptidyl-Peptidase IV Inhibitors administration & dosage
Dipeptidyl-Peptidase IV Inhibitors chemistry
Hypromellose Derivatives administration & dosage
Hypromellose Derivatives chemistry
Nanoparticles administration & dosage
Nanoparticles chemistry
Vildagliptin administration & dosage
Vildagliptin chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1873-3476
- Volume :
- 562
- Database :
- MEDLINE
- Journal :
- International journal of pharmaceutics
- Publication Type :
- Academic Journal
- Accession number :
- 30928213
- Full Text :
- https://doi.org/10.1016/j.ijpharm.2019.03.054