Serum lipid-bound sialic acid (LSA) assay was evaluated for differential diagnosis between benign and malignant pulmonary disease.Mean serum LSA for normal controls was 13.7±3.7 mg/dl and the upper limit of the ...Serum lipid-bound sialic acid (LSA) assay was evaluated for differential diagnosis between benign and malignant pulmonary disease.Mean serum LSA for normal controls was 13.7±3.7 mg/dl and the upper limit of the normal value was set at 19.8 mg/dl (95% confidence limit,one side).The specificity was 97.l% (95% confidence interval was 93.8%, 100.0%).The mean for benign pulmonary disease was 1 7.l±5.l mg/dl,the specificity was 89.l% (95% confidence interval was 80.9%,97.3%), and the sensitivity was 10.9%.The mean for malignant pulmonary disease was 27.l±7.9 mg/dl, and the sensitivity was 93.3%(95% confidence interval was 88.5%, 98.1%).The serum LSA levels for different malignant pulmonary diseases were different between small cell carcinoma and adenocarcinoma. The results indicate that serum LSA assay might be used as tumor marker to differentiate lung cancer from normal subjects or benign lung disease.展开更多
建立了液相色谱-串联四极杆质谱(Liquid chromatography tandem four stage mass spectrometry,HPLC-MS/MS)检测信阳水牛乳中唾液酸(Sialic acid,SA)含量的分析方法。采用电喷雾离子源,在负离子采集模式下,利用多重反应监测(MRM)唾液酸...建立了液相色谱-串联四极杆质谱(Liquid chromatography tandem four stage mass spectrometry,HPLC-MS/MS)检测信阳水牛乳中唾液酸(Sialic acid,SA)含量的分析方法。采用电喷雾离子源,在负离子采集模式下,利用多重反应监测(MRM)唾液酸离子对:m/z=308/87,170,定量离子对:m/z=308/87。结果表明,唾液酸含量为0.05~0.50μg/g范围内,线性关系良好(R~2=0.999 9),平均回收率为95.1%, RSD为2.6%,检出限、定量限分别为0.05,0.2μg/g,该方法操作简单,有较好准确性和重现性、高灵敏度,可广泛应用于牛乳中唾液酸(SA)的分析检测,为信阳水牛乳及乳制品的开发探索提供更多可能性。展开更多
文摘Serum lipid-bound sialic acid (LSA) assay was evaluated for differential diagnosis between benign and malignant pulmonary disease.Mean serum LSA for normal controls was 13.7±3.7 mg/dl and the upper limit of the normal value was set at 19.8 mg/dl (95% confidence limit,one side).The specificity was 97.l% (95% confidence interval was 93.8%, 100.0%).The mean for benign pulmonary disease was 1 7.l±5.l mg/dl,the specificity was 89.l% (95% confidence interval was 80.9%,97.3%), and the sensitivity was 10.9%.The mean for malignant pulmonary disease was 27.l±7.9 mg/dl, and the sensitivity was 93.3%(95% confidence interval was 88.5%, 98.1%).The serum LSA levels for different malignant pulmonary diseases were different between small cell carcinoma and adenocarcinoma. The results indicate that serum LSA assay might be used as tumor marker to differentiate lung cancer from normal subjects or benign lung disease.
文摘建立了液相色谱-串联四极杆质谱(Liquid chromatography tandem four stage mass spectrometry,HPLC-MS/MS)检测信阳水牛乳中唾液酸(Sialic acid,SA)含量的分析方法。采用电喷雾离子源,在负离子采集模式下,利用多重反应监测(MRM)唾液酸离子对:m/z=308/87,170,定量离子对:m/z=308/87。结果表明,唾液酸含量为0.05~0.50μg/g范围内,线性关系良好(R~2=0.999 9),平均回收率为95.1%, RSD为2.6%,检出限、定量限分别为0.05,0.2μg/g,该方法操作简单,有较好准确性和重现性、高灵敏度,可广泛应用于牛乳中唾液酸(SA)的分析检测,为信阳水牛乳及乳制品的开发探索提供更多可能性。