Sa.52. Duration of Untreated Juvenile Dermatomyositis (JDM) at Diagnosis: Impact on Muscle Biopsy (MBx) Gene Expression Profiles, Comparisons with Polymyositis (PM)

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• 作者：Sheela Shrestha ; Sheela Shrestha ; Nicholas Geraci ; Gabrielle Morgan ; Yi-Wen Chen
• 关键词：Gold nanoparticles ; Catalysis ; Polymer supports ; H₂O₂ decomposition ; Glucose oxidation
• 刊名：Clinical Immunology
• 出版年：2008
• 出版时间：2008
• 年：2008
• 卷：127
• 期：Supplement 1
• 页码：S97
• 全文大小：54 K

文摘

Gold nanoparticles (Au NPs) were deposited directly from aqueous solution of diethylenediaminegold(III) complex onto polymer beads commercially available, such as poly(methyl methacrylate) (PMMA), polystyrene (PS), and polyaniline (PANI) without surface modification. The dropwise addition of NaBH₄ to reduce Au(III) was found to be very effective to obtain small Au(0) NPs with a narrow size distribution except for PANI. The catalytic performance of Au NPs deposited on polymer beads for H₂O₂ decomposition and glucose oxidation with H₂O₂ were more significantly affected by the kinds of polymer supports than by the size of Au NPs. The equimolar oxidation of glucose with H₂O₂ could be operated by controlling the decomposition rate of H₂O₂ over Au/PMMA.