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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
胎儿纤维连接蛋白(fFN)是一种由胎儿细胞产生的纤连蛋白。它存在于绒毛膜和蜕膜(胎囊和子宫内膜之间)的界面。它被认为是一种粘合剂或 "生物胶",将胎囊与子宫内膜结合在一起。如果发生早产,胎儿纤连蛋白就会 "漏 "到阴道里,可以通过筛查测试来测量,检测结果会产生阴性或阳性。当fFN检测为阳性时,该结果是预测早产风险的一个很好的指标。阴性结果意味着在未来7到10天内发生早产的可能性很小,对于仍有高风险的妇女,可以每周重复测试。 本试剂盒采用双抗体夹心法酶联免疫吸附试验(ELISA)。往预先包被有人胎儿纤维连接蛋白(fFN)捕获抗体的微孔中,依次加入样本、标准品、生物素标记的检测抗体,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胎儿纤维连接蛋白(fFN)呈正相关。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 sandwich enzyme-linked immunosorbent assay (ELISA) principle. Microplate wells are pre-coated with a capture antibody specific to Human fFN. Following this, the sample, standards, a biotin-conjugated detection antibody, and an HRP (horseradish peroxidase)-labeled conjugate are added sequentially to the wells. The procedure involves incubation and wash steps between each addition. For detection, TMB substrate is used. TMB yields a blue color in the presence of the peroxidase activity of HRP. The reaction is then stopped with an acid solution, which converts the blue color to a final yellow color. The intensity of the yellow color is directly proportional to the concentration of Human fFN present in the sample. The optical density (OD) is measured at a wavelength of 450 nm using a microplate reader. Finally, the concentration of the target analyte in the sample is calculated based on the standard curve generated from the standards.