Cyclodextrin-grafted poly(anhydride) nanoparticles for oral glibenclamide administration. In vivo evaluation using C. elegans
| Autor: | Juan M. Irache, José L. Vizmanos, Yiyan He, Zhongwei Gu, María Cristina Martínez-Ohárriz, Paula Aranaz, David Lucio |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Administration Oral Pharmaceutical Science Nanoparticle 02 engineering and technology Glibenclamide 03 medical and health sciences Oral administration Glyburide medicine Animals Hypoglycemic Agents Molecule Caenorhabditis elegans chemistry.chemical_classification Drug Carriers Cyclodextrin Maleates Polymer Lipid Metabolism 021001 nanoscience & nanotechnology Combinatorial chemistry 2-Hydroxypropyl-beta-cyclodextrin Drug Liberation 030104 developmental biology chemistry Covalent bond Nanoparticles Polyethylenes 0210 nano-technology Conjugate medicine.drug |
| Zdroj: | International Journal of Pharmaceutics. 547:97-105 |
| ISSN: | 0378-5173 |
| DOI: | 10.1016/j.ijpharm.2018.05.064 |
| Popis: | The aim of this work was to prepare and evaluate cyclodextrins-modified poly(anhydride) nanoparticles to enhance the oral administration of glibenclamide. A conjugate polymer was synthesized by incorporating hydroxypropyl-β-cyclodextrin to the backbone of poly(methylvinyl ether-co-maleic anhydride) via Steglich reaction. The degree of substitution of anhydride rings by cyclodextrins molecules was calculated to be 4.9% using H-NMR spectroscopy. A central composite design of experiments was used to optimize the preparative process. Under the optimal conditions, nanoparticles displayed a size of about 170 nm, a surface charge of −47 mV and a drug loading of 69 µg GB/mg. X-ray diffraction studies confirmed the loss of the crystalline structure of GB due to its dispersion into the nanoparticles, either included into cyclodextrin cavities or entrapped in the polymer chains. Glibenclamide was mainly release by Fickian-diffusion in simulated intestinal fluid. GB-loaded nanoparticles produced a hypolipidemic effect over C. elegans N2 wild-type and daf-2 mutant. The action mechanism included daf-2 and daf-28 genes, both implicated in the insulin signaling pathway of C. elegans. In summary, the covalent linkage of cyclodextrin to the poly(anhydride) backbone could be an interesting strategy to prepare nanoparticles for the oral administration of glibenclamide. |
| Databáze: | OpenAIRE |
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