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胰高血糖素样肽-1(GLP-1)是一种 30 或 31 个氨基酸长的肽类激素,来源 于胰高血糖素肽的组织特异性翻译后处理。它由肠道内分泌 L 细胞和脑干孤 束核内的某些神经元在食用食物时产生和分泌。最初的产物 GLP-1(1-37) 容易被酰胺化和蛋白裂解,从而产生两个截断的和等价的生物活性形式,即 GLP-1(7-36)酰胺和 GLP-1(7-37)。活跃的 GLP-1 由两个α-螺旋组成, 分别位于 13-20 和 24-35 的氨基酸位置,由一个连接区分开。与葡萄糖依赖 性胰岛素促进肽(GIP)一样,GLP-1 也是一种增加剂;因此,它能够通过 增强胰岛素的分泌,以葡萄糖依赖的方式降低血糖水平。 本试剂盒采用竞争法酶联免疫吸附试验(ELISA)。往预先包被有人胰高血糖素样肽1(GLP-1)抗原的微孔中,依次加入样本、标准品、Biotin标记的抗体,HRP酶结合物,中间经过温育和洗涤,用底物TMB显色,TMB在过氧化物酶(HRP)的催化下转化成蓝色,并在酸的作用下转化成最终的黄色。颜色的深浅和样本中的人胰高血糖素样肽1(GLP-1)呈负相关。用酶标仪在450nm波长下测定吸光度(OD值),计算样本浓度。
This kit employs the competitive enzyme-linked immunosorbent assay (ELISA) principle. Microplate wells are pre-coated with Human GLP-1 antigen. The sample, standards, a biotin-labeled antibody, and an HRP enzyme conjugate are then added sequentially to the wells. The procedure includes incubation and wash steps between each addition. TMB substrate is used for color development. In the presence of the peroxidase (HRP) enzyme, TMB is catalyzed to produce a blue color, which is then converted into a final stable yellow color upon the addition of an acid stop solution. The intensity of the resulting yellow color is inversely proportional to the concentration of Human GLP-1 in the sample. The optical density (OD) is measured at a wavelength of 450 nm using a microplate reader, and the concentration of the target analyte in the sample is calculated based on the standard curve.