Abstract
Objective To establish a nanometer magnetic particle chemiluminescence methodfor the detection of specific IgE antibodies to Tyrophagus putrefaciens allergen. Methods According to the routine operation steps of chemiluminescence, chemiluminescence reaction system and suitable immune reaction conditions for detection of specific IgE of Tyrophagus putrescentiae allergen are established. Considering the performance of the chemiluminescence method established in this paper, the American Somerfly Phadia method wasused as the gold standard to evaluate the test performance of the established chemiluminescence method. Results In thechemiluminescence reaction system, Luminol concentration in luminescent substrate A solution is 0.4 mg/ml, Urea hydrogen peroxidein luminescent substrate B solutionis 0.2 mg/ml.The sensitivity of this luminescent reaction system to horseradish peroxidase (HRP) is very high, the minimum detectable HRP is 0.01 ng/ml.In the immune response, the room temperature light-shielding reaction was detected for 5 min after the addition of substrates A and B, and the detection values were effective within 5-30 min. 37 ℃ is optimum luminescence reaction temperature. Choose the range of 0.35-100 IU/ml as the standard curve. According to the results of 120 clinical trials, using Phadia (immunofluorescence method) as the gold standard, the chemiluminescence method established in this study has significant significance for the detection of Tyrophagus putrescentiae allergen. Conclusion A nanometer magnetic particle chemiluminescence method was successfully established for the detection of specific IgE antibodies to Tyrophagus putrescentiae allergen. Key words: Tyrophagus putrescentiae allergen; Nanometer magnetic particles; Chemiluminescence; Streptavidin; Biotin
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