NDLI: Lyophilized Oral Sustained Release Polymeric Nanoparticles of Nateglinide

Content Provider	Springer Nature Link
Author	Kaleemuddin, Mohammad Srinivas, Prathima
Copyright Year	2012
Abstract	The objective of this study is to formulate lyophilized oral sustained release polymeric nanoparticles of nateglinide in order to decrease dosing frequency, minimize side effects, and increase bioavailability. Nateglinide-loaded poly Ɛ-caprolactone nanoparticles were prepared by emulsion solvent evaporation with ultrasonication technique and subjected to various studies for characterization including scanning electron microscopy (SEM), Fourier transform infrared spectroscopy, photon correlation spectroscopy and evaluated for in vitro drug release and pharmacodynamic studies. The influence of increase in polymer concentration, ultrasonication time, and solvent evaporation rate on nanoparticle properties was investigated. The formulations were optimized based on the above characterization, and the formulation using 5% polymer, 3-min sonication time, and rota-evaporated was found to have the best drug entrapment efficiency of 64.09 ± 4.27% and size of 310.40 ± 11.42 nm. Based on SEM, nanoparticles were found to be spherical with a smooth surface. In vitro drug release data showed that nanoparticles sustained the nateglinide release for over 12 h compared to conventional tablets (Glinate 60 mg), and drug release was found to follow Fickian mechanism. In vivo studies showed that nanoparticles prolonged the antidiabetic activity of nateglinide in rats significantly (p ≤ 0.05) compared to the conventional tablets (Glinate 60 mg) over a period of 12 h. Accelerated stability data indicated that there was minimal to no change in drug entrapment efficiency.
Starting Page	78
Ending Page	85
Page Count	8
File Format	PDF
Journal	AAPS PharmSciTech
Volume Number	14
Issue Number	1
e-ISSN	15309932
Language	English
Publisher	Springer US
Publisher Date	2012-12-11
Publisher Institution	American Association of Pharmaceutical Scientists
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Pharmacology/Toxicology Biotechnology Biochemistry Pharmacy
Content Type	Text
Resource Type	Article

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