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辅酶ⅠNAD(H)含量测定试剂盒(分光光度法)

TOPEK190586
4℃/-20℃
6个月
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TOPEK190586 50T/24S $90.82
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Introduction：

正式测定前务必取2-3个预期差异较大的样本做预测定                                             

测定意义：

辅酶ⅠNAD(H)广泛存在于动物、植物、微生物和培养细胞中，NAD+是糖酵解（EMP）和三羧酸循环（TCA）的主要氢受体，生成的 NADH 经呼吸电子链（ETC）传递把电子交给氧，在合成 ATP 的同时，形成大量的 ROS，同时 NADH 再生为 NAD+。糖、脂、蛋白质三大代谢物质分解中的氧化反应绝大部分通过这一体系完成。NAD(H)含量和 NADH/NAD+比值的高低可用于评价糖酵解和 TCA 循环的强弱。较高的 NAD(H)及 NADH/NAD+比值说明细胞呼吸耗氧量较高，处于过氧化状态。此外，NADH/NAD+比值升高也可抑制糖酵解和 TCA循环。另外，NAD+降解产物对细胞信号传导、代谢和基因表达等具有重要的调控作用。 

测定原理：

分别用酸性和碱性提取液提取样品中 NAD+和 NADH，NADH 通过 PMS 的递氢作用，还原氧化型噻唑蓝（MTT）为甲瓒，在 570nm 下检测吸光值；而 NAD+可被乙醇脱氢酶还原为NADH，进一步采用 MTT 还原法检测。

These protocols are for reference only. Biotopped does not independently validate these methods.

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