國家衛生研究院 NHRI:Item 3990099045/12822
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/12822


    Title: Correlation between tribological properties and the quantified structural changes of lysozyme on poly (2-hydroxyethyl methacrylate) contact lens
    Authors: Chang, YC;Su, CY;Chang, CH;Fang, HW;Wei, Y
    Contributors: Institute of Biomedical Engineering and Nanomedicine
    Abstract: The ocular discomfort is the leading cause of contact lens wear discontinuation. Although the tear proteins as a lubricant might improve contact lens adaptation, some in vitro studies suggested that the amount of adsorbed proteins could not simply explain the lubricating performance of adsorbed proteins. The purpose of this study was to quantify the structural changes and corresponding ocular lubricating properties of adsorbed protein on a conventional contact lens material, poly (2-hydroxyethyl methacrylate) (pHEMA). The adsorption behaviors of lysozyme on pHEMA were determined by the combined effects of protein-surface and protein-protein interactions. Lysozyme, the most abundant protein in tear, was first adsorbed onto the pHEMA surface under widely varying protein solution concentrations to saturate the surface, with the areal density of the adsorbed protein presenting different protein-protein effects within the layer. These values were correlated with the measured secondary structures, and corresponding friction coefficient of the adsorbed and protein covered lens surface, respectively. The decreased friction coefficient value was an indicator of the lubricated surfaces with improved adaptation. Our results indicate that the protein-protein effects help stabilize the structure of adsorbed lysozyme on pHEMA with the raised friction coefficient measured critical for the innovation of contact lens material designs with improved adaptation.
    Date: 2020-07-23
    Relation: Polymers. 2020 Jul 23;12(8):Article number 1639.
    Link to: http://dx.doi.org/10.3390/polym12081639
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=2073-4360&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000567160700001
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85089490067
    Appears in Collections:[Others] Periodical Articles

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