Ophthalmic solution of pirenoxine sodium-layered double hydroxide nanosheets and intercalated nanoparticles
10.11665/j.issn.1000-5048.20160410
- VernacularTitle:吡诺克辛钠-层状双氢氧化物纳米片及插层纳米粒复合物滴眼液的研究
- Author:
Huibo CHI
1
;
Tingting XU
;
Hongyan CHEN
;
Feng CAO
Author Information
1. 中国药科大学药剂学教研室
- Publication Type:Journal Article
- Keywords:
layered double hydroxides;
nanosheets;
nanoparticles;
exfoliation;
pirenoxine sodium;
in vitro release;
precorneal retention
- From:
Journal of China Pharmaceutical University
2016;47(4):448-456
- CountryChina
- Language:Chinese
-
Abstract:
The aim of this study was to evaluate the potential application of layered double hydroxide(LDH)nanosheets for ocular drug delivery. Using LDH nanosheets as carriers, carboxymethyl cellulose(CMC)as a stabilizer and pirenoxine sodium(PRN)as the model drug, CMC-PRN-LDH nanosheets were prepared. PRN-LDHs nanoparticles were synthesized via co-precipitation method. X-ray diffraction, atomic force microscopy, transmission electron microscopy and laser particle sizer were employed to characterize the physicochemical properties of LDH nanosheets, CMC-LDH nanosheets and PRN-LDH nanocomposites. Stability, accumulative release in vitro and precorneal retention in vivo of both CMC-PRN-LDH nanosheets and PRN-LDHs nanoparticles were evaluated. It was found that CMC-PRN-LDH nanosheets were electrostatically stabilized by CMC absorbed on the surface of LDH nanosheets, but PRN-LDHs nanoparticles aggregated in phosphate buffered saline. 12-hr accumulative release percentage of PRN from CMC-PRN-LDH nanosheets and PRN-LDHs nanoparticles were 70. 44% and 44. 21% in vitro, respectively. Compared with the commercial PRN eye drops, there existed 4. 18-fold increase in AUC0-6 h and 1. 79-fold in mean retention time of CMC-PRN-LDH nanosheets. Negligible levels of PRN-LDHs nanoparticles might be attributed to inter-groups difference. Draize test showed that CMC-PRN-LDH nanosheets were non-irritant to the rabbit eyes after single and repeated dosing. It suggest that this novel LDH nanosheet could be a promising carrier for ocular drug delivery with prolonged residence time.
