Publication: Formation, physical stability and in vitro antimalarial activity of dihydroartemisinin nanosuspensions obtained by co-grinding method
Issued Date
2008-03-01
Resource Type
ISSN
15205762
03639045
03639045
Other identifier(s)
2-s2.0-41149114651
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Drug Development and Industrial Pharmacy. Vol.34, No.3 (2008), 314-322
Suggested Citation
Jiraporn Chingunpitak, Satit Puttipipatkhachorn, Porntip Chavalitshewinkoon-Petmitr, Yuichi Tozuka, Kunikazu Moribe, Keiji Yamamoto Formation, physical stability and in vitro antimalarial activity of dihydroartemisinin nanosuspensions obtained by co-grinding method. Drug Development and Industrial Pharmacy. Vol.34, No.3 (2008), 314-322. doi:10.1080/03639040701662388 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/18965
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Formation, physical stability and in vitro antimalarial activity of dihydroartemisinin nanosuspensions obtained by co-grinding method
Other Contributor(s)
Abstract
The purpose of this study was to investigate the formation of drug nanoparticles from binary and ternary mixtures, consisting of dihydroartemisinin (DHA), a poorly water-soluble antimalarial drug, with water-soluble polymer and/or surfactant. Binary mixtures of drug/polyvinyl pyrrolidone K30 (PVP K30), binary mixtures of drug/sodium deoxycholate (NaDC), and ternary mixtures of drug/PVP K30/NaDC were prepared at different weight ratios and then ground by vibrating rod mill to obtain ground mixtures. Nanosuspension was successfully formed after dispersing ternary ground mixtures or DHA/NaDC ground mixtures in water. The ternary ground mixtures did not give superior nanosuspension in terms of particle size reduction and recovery of drug nanoparticles, but they provided more physically stable nanosuspensions than DHA/NaDC ground mixtures. The size of drug nanoparticles was decreased with increasing grinding time and lowering amount of PVP K30 and NaDC. About 95% of drug nanoparticles were found in the nanosuspension from ternary ground mixtures. Zeta potential measurement suggested that stable nanosuspension was attributable to adsorption of NaDC and PVP K30 onto surface of drug particles. Atomic force microscopy and transmission electron microscopy with selected area diffraction indicated that DHA in nanosuspension was existed as nanocrystals. The obtained nanosuspensions had higher in vitro antimalarial acitivity against Plasmodium falciparum than microsuspensions. The results suggest that co-grinding of DHA with PVP K30 and NaDC seems to be a promising method to prepare DHA nanosuspension. Copyright © Informa Healthcare USA, Inc.