ABSTRACT
Objective:To establish a method to detect food allergen based on Latex-enhanced immune turbidimetry ( PETIA) and apply to clinic.Methods: The PETIA method was used for evaluating the detection system including standard curve , detection-limit,stability, intra-assay and inter-assay precision and cross-reactivity,clinical normal serum specimens and clinical allergic diseases serum specimens were measured to evaluated the perspective of the clinical application .Results: The standard curve :Y=837.1 x2-125.2x+10.036, linear range: 0.0-400 U/ml, the correlation coefficient of the standard curve was 0.996, the intrabatch and interbatch precision was<10%.The normal reference range was≤33.5 U/ml,the AUC of ROC curve was 0.957,the sensitivity was 89.61%,The specificity was 65.22%, the accuracy was 84.00%, and the positive predicted value was 89.61%, the negative predicted value was 65.22%.the test results have strong correlation with ELISA ( r=0.890 2 ) .Conclusion: The PETIA method for detecting food allergen achieved corresponding clinical application standards and may be used for the diagnosis of food allergies .
ABSTRACT
Objective:to investigate clinical significance of serum and urine NGAL (Neutrophil gelatinase-associated lipocalin) in the early kidney damage with primary hypertension.Methods:According to UAER ( urinary microalbumin excreting rate ) ,we divided 90 patients with primary hypertension into three groups (300 mg/24h),and selected 30 healthy people as the control group.Serum and urine NGAL and cystatin C ,serum creatinine,urea nitrogen,high sensitive C reactive protein , transferrin,and basis of blood pressure were detected and followed up one year.Results:Compared with healthy group ,GFR( glomerular filtration rate ) and serum NGAL were decreased significantly in medium and severe proteinuria groups , while urine NGAL was increased.Conclusion:Serum and urine NGAL have been a clear trend changes in kidney damage ,which could be used as a reliable indicator in monitoring renal function of patients with primary hypertension.