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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/26378

    Title: Dynamic fluorescence imaging analysis to investigate the cholesterol recruitment in lipid monolayer during the interaction between beta-amyloid (1-40) and lipid monolayers
    Authors: Lin,MS;Chen,XB;Wang,SSS;Chang,Y;Chen,WY
    Contributors: 化學工程與材料工程學系
    Date: 2009
    Issue Date: 2010-06-29 17:26:42 (UTC+8)
    Publisher: 中央大學
    Abstract: Extracellular beta-amyloid (A beta) deposit is considered as one of the primary factors in inducing Alzheimer's disease (AD). However. the mechanism of A beta deposition on the cell membrane and the induced cytotoxicity are still unclear. On the basis of the previous reports and results, we propose the "Recruiting Hypothesis" on the interaction between the plasma membrane and A beta. Recently, many studies focused on cholesterol, which is considered as an important factor for AD. The most challenging issue in studying the cholesterol is non-ideal mixing behavior and non-dynamic analysis. In the present study, we investigated the cholesterol recruitment in the lipid monolayer during the interaction between beta-amyloid peptides A beta (1-40) and lipid monolayers by dynamic fluorescent imaging analysis. Results from lipid monolayer trough studies showed that the rate of A beta adsorption onto lipid monolayer is mainly due to the electrostatic effect which is sensitive to the lipid monolayer composition. From the fluorescence imaging analysis, the interaction of A beta with lipid monolayer containing negative charge lipid and cholesterol brings out the recruiting behavior of the cholesterol and reduces the fluidity of lipid. The present study not only demonstrates the technical application for monitoring the dynamic molecular behaviors at the interface but also reveals the roles to distinguish lipid molecules on the A beta-membrane interaction. (C) 2009 Elsevier B.V. All rights reserved.
    Appears in Collections:[化學工程與材料工程研究所] 期刊論文

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