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Methanol extrapure AR

Company: SRL Sisco Research Laboratories
Catalog#: 65524
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Fluorometric Estimation of Glutathione in Cultured Microglial Cell Lysate
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2017-06-05
[Abstract]  Glutathione is one of the major antioxidant defense components present in cells. It is predominantly present as reduced glutathione (GSH) and converted into oxidized glutathione (GSSG) while reducing the free radicals like hydroxyl ions (OH-). For the measurement of GSH and GSSG, o-phthalaldehyde (OPT) has been used as a fluorescent reagent. O-phthalaldehyde has an ability to react specifically with GSH at pH 8 and GSSG at pH 12 respectively. N-ethylmaleimide (NEM) has been used to prevent auto-oxidation of GSH during measurement of GSSG in the present protocol. The original protocol by Hissin and Hilf was developed for glutathione estimation in Rat liver tissue. The present protocol has been standardized following Hissin and Hilf (1976) for the estimation of ... [摘要]  谷胱甘肽是细胞中存在的主要抗氧化防御成分之一。它主要作为还原型谷胱甘肽(GSH)存在并转化为氧化型谷胱甘肽(GSSG),同时还可以减少自由基,如羟基离子(OH)。对于GSH和GSSG的测定,邻苯二甲醛(OPT)已被用作荧光试剂。邻苯二甲醛具有与pH8的GSH和pH12的GSSG特异性反应的能力。已经使用N-甲基马来酰亚胺(NEM)来在本方案中测量GSSG期间防止GSH的自动氧化。 Hissin和Hilf的原始方案被开发用于大鼠肝组织中的谷胱甘肽估计。目前的方案已经在Hissin和Hilf(1976)之后被标准化,用于估计培养的小胶质细胞裂解物中的谷胱甘肽,但它也可以用于其它哺乳动物细胞裂解物。在我们的实验中,相同的方案已被用于估计小鼠神经母细胞瘤细胞N2a的全细胞裂解物中的谷胱甘肽。

背景 该方法于1976年由Hissin和Hilf在分析生物化学方面出版(Hissin和Hilf,1976)。然而,有可用于准确检测GSH的方法;由于GSH容易氧化转化为GSSG,所以大多数方法给出过高的GSSG。 ...

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