[EN] IMIDAZOLOTHIAZOLE COMPOUNDS AS MODULATORS OF PROTEIN KINASE<br/>[FR] COMPOSÉS IMIDAZOLOTHIAZOLES UTILISÉS COMME MODULATEURS DE PROTÉINE KINASES
申请人:AMBIT BIOSCIENCE CORP
公开号:WO2010054058A1
公开(公告)日:2010-05-14
Compounds, compositions and methods are provided for modulating the activity of receptor kinases and for the treatment, prevention, or amelioration of one or more symptoms of disease or disorder mediated by receptor kinases.
Direct Electrochemical Oxidation of Disulfides at Anodically Pretreated Boron-Doped Diamond Electrodes
作者:C. Terashima、Tata N. Rao、B. V. Sarada、Y. Kubota、A. Fujishima
DOI:10.1021/ac020583q
日期:2003.4.1
Anodically oxidized diamond electrodes have been used to oxidize disulfides, thiols, and methionine in aqueous acidic media and tested for amperometric detection of these compounds after chromatographic separation. Cyclic voltammetric signals for 1 mM glutathione disulfide (GSSG) were observed at 1.39 and 1.84 V vs SCE, the values being less positive than those of its as-deposited counterpart as well as glassy carbon electrode. The voltammetric and chronocoulometric results have indicated the high stability of the electrode with negligible adsorption. A positive shift in the peak potential with increasing pH indicated the attractive electrostatic interaction between the anodically oxidized diamond surface and the positively charged GSSG in acidic media that promoted its analytical performance. The results of the electrolysis experiments of disulfides and thiols showed that the oxidation reaction mechanism of glutathione (GSH) and GSSG involves oxygen transfer. Following separation by liquid chromatography (LC), the determination of both GSH and GSSG in rat whole blood was achieved at a constant potential (1.50 V vs Ag/AgCl), and the limits of detection for GSH and GSSG were found to be 1.4 nM (0.028 pmol) and 1.9 nM (0.037 pmol) with a linear calibration range up to 0.25 mM. These detection limits were much lower than those reported for the amperometry using Bi−PbO2 electrodes and LC−mass spectrometry, and the LC method using diamond electrodes were comparable with enzymatic assay in real sample analysis. The high response stability and reproducibility together with the possibility of regeneration of the electrode surface by on-line anodic treatment at 3 V for 30 min further support the applicability of anodically pretreated diamond for amperometric detection of disulfides.
阳极氧化金刚石电极用于在酸性水介质中氧化二硫化物、硫醇和蛋氨酸,并在色谱分离后测试了这些化合物的安培检测。与 SCE 相比,1 mM 谷胱甘肽二硫化物(GSSG)的循环伏安信号分别为 1.39 V 和 1.84 V,其正值低于其沉积电极和玻璃碳电极。伏安法和计时电流法的结果表明,该电极具有极高的稳定性,吸附作用可以忽略不计。随着 pH 值的升高,峰值电位发生正向移动,这表明在酸性介质中,阳极氧化金刚石表面与带正电荷的 GSSG 之间存在有吸引力的静电作用,从而提高了其分析性能。二硫化物和硫醇的电解实验结果表明,谷胱甘肽(GSH)和 GSSG 的氧化反应机制涉及氧转移。经液相色谱(LC)分离后,在恒定电位(1.50 V vs Ag/AgCl)条件下测定了大鼠全血中的 GSH 和 GSSG,发现 GSH 和 GSSG 的检测限分别为 1.4 nM(0.028 pmol)和 1.9 nM(0.037 pmol),线性校准范围可达 0.25 mM。这些检测限远远低于使用 Bi-PbO2 电极的安培法和液相色谱-质谱法的检测限,而使用金刚石电极的液相色谱法在实际样品分析中可与酶法相媲美。反应的高稳定性和可重复性,以及通过在 3 V 电压下在线阳极处理 30 分钟使电极表面再生的可能性,进一步证明了阳极处理过的金刚石适用于二硫化物的安培检测。
IMIDAZOLOTHIAZOLE COMPOUNDS AND METHODS OF USE THEREOF
申请人:Apuy Julius L.
公开号:US20120070410A1
公开(公告)日:2012-03-22
Compounds, compositions and methods are provided for modulating the activity of receptor kinases and for the treatment, prevention, or amelioration of one or more symptoms of disease or disorder mediated by receptor kinases.
Cosmetic or dermatological active ingredient combination
申请人:Batzer Jan
公开号:US20050008665A1
公开(公告)日:2005-01-13
The invention is a cosmetic or dermatological preparation comprising an active ingredient combination of at least one antioxidant or a derivative thereof and 8-hexadecene-1,16-dicarboxylic acid.