Combined strategies of apomorphine diester prodrugs and nanostructured lipid carriers for efficient brain targeting

doi:10.1088/0957-4484/23/9/095103

CNU IR > Pharmacy and Science > Dept. of Pharmacy > Periodical Articles > Item 310902800/27672

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/27672

Title:	Combined strategies of apomorphine diester prodrugs and nanostructured lipid carriers for efficient brain targeting
Authors:	Liu, Kuo-Sheng Wen, Chih-Jen Yen, Tzu-Chen Sung, K.C. Ku, Ming-Chuan Wang, Jhi-Joung Fang, Jia-You
Contributors:	藥學系
Keywords:	Central-Nervous-System In-Vitro Parkinsons-Disease Drug-Delivery Nanoparticles Liposomes Ester Skin Emulsions Release
Date:	2012-03-09
Issue Date:	2014-03-21 16:17:11 (UTC+8)
Publisher:	Iop Publishing Ltd
Abstract:	Our aim is to develop nanostructured lipid carriers (NLCs) for loading the apomorphine diester prodrugs, diacetyl apomorphine (DAA) and diisobutyryl apomorphine (DIA), into the brain. NLCs were prepared using sesame oil/cetyl palmitate as the lipid matrices. Experiments were performed with the objective of evaluating the physicochemical characteristics, drug release, safety and brain-targeting efficacy of the NLCs. The size of regular NLCs (N-NLCs) was 214 nm. The addition of Forestall (FE) and polyethylene glycol (PEG) to the NLCs (P-NLCs) increased the particle diameter to 250 nm. The zeta potentials of N-NLCs and P-NLCs were respectively shown to be -21 and 48 mV. Diester prodrugs were more lipophilic and more chemically stable than the parent apomorphine. The hydrolysis study indicated that the prodrugs underwent bioconversion in plasma and brain extract, with DAA exhibiting faster degradation than DIA. Sustained release was achieved through the synergistic effect of integrating strategies of prodrugs and NLCs, with the longer carbon chain showing the slower release (DIA < DAA). None of the NLCs tested here exhibited a toxicity problem according to the examination of neutrophil lactate dehydrogenase (LDH) release and hemolysis. Results of a bioimaging study in mice showed that P-NLCs largely accumulated in the brain. The distribution duration of the fluorescent dye in the brain region was also prolonged by the nanocarriers.
Relation:	Nanotechnology, 23(9), 95103
Appears in Collections:	[Dept. of Pharmacy] Periodical Articles

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