目的通过比较坑道噪声性听力损失易感人群和非易感人群血清蛋白指纹图谱的差异,寻找显著性表达的差异蛋白,为筛选更适合从事特殊兵种作业的官兵提供参考。方法根据噪声性听力损失易感人群分布情况,选择每个兵种高度易感组20人为模型...目的通过比较坑道噪声性听力损失易感人群和非易感人群血清蛋白指纹图谱的差异,寻找显著性表达的差异蛋白,为筛选更适合从事特殊兵种作业的官兵提供参考。方法根据噪声性听力损失易感人群分布情况,选择每个兵种高度易感组20人为模型建立组,非易感组18人为对照组,共38人,收集其血清样本。应用磁珠联合基质辅助激光解吸电离飞行时间质谱(matrix-assisted laser desorption/ionization time of flight mass spectrometry,MALDI—TOF—Ms)对两组样本进行差异蛋白研究,筛选出显著性差异的血清蛋白,并应用遗传算法建立诊断模型。结果噪声性听力损失易感人群组与对照组之间共检测出55个差异血清多肽峰,其中有统计学意义的差异峰仅有2个,分子量分别为1083.57Da和1061.68Da(P〈0.05)。以这两个差异蛋白建立数据模型,结果提示该模型诊断敏感度为54.24%,特异度为91.67%。结论噪声性听力损失易感人群组与对照组之间存在差异显著的血清蛋白,应用遗传算法建立血清差异蛋白的诊断模型,可为筛选更适合从事特殊兵种作业的官兵提供参考。展开更多
OBJECTIVE:This study screened serum tumor biomarkers by surface enhanced laser desorption/ionization time-of-flight mass spectrometry(SELDI-TOF-MS) to establish a subset which could be used for the prediction of Qi de...OBJECTIVE:This study screened serum tumor biomarkers by surface enhanced laser desorption/ionization time-of-flight mass spectrometry(SELDI-TOF-MS) to establish a subset which could be used for the prediction of Qi deficiency syndrome and phlegm and blood stasis in patients with non-small cell lung cancer;and as diagnostic model of Chinese medicine.METHODS:Serum samples from 63 lung cancer patients with Qi deficiency syndrome and phlegm and blood stasis,and 28 lung cancer patients with non-Qi deficiency syndrome and phlegm and blood stasis were analyzed using SELDI-TOF-MS with a PBS II-C protein chip reader.Protein profiles were generated using immobilized metal affinity capture(IMAC3) protein chips.Differentially-expressed proteins were screened.Protein peak clustering and classification analyses were performed using Biomarker Wizard and Biomarker Pattern software packages,respectively.RESULTS:A total of 268 effective protein peaks were detected in the 1,000-10,000 Da molecular range for the 15 serum proteins screened(P<0.05).The decision tree model was M 2284.97,with a sensitivity of 96.2% and a specificity of 66.7%.CONCLUSION:SELDI-TOF-MS techniques,combined with a decision tree model,can help identify serum proteomic biomarkers related to Qi deficiency syndrome and phlegm and blood stasis in lung cancer patients;and the predictive model can be used to discriminate between Chinese medicine diagnostic models of disease.展开更多
文摘目的通过比较坑道噪声性听力损失易感人群和非易感人群血清蛋白指纹图谱的差异,寻找显著性表达的差异蛋白,为筛选更适合从事特殊兵种作业的官兵提供参考。方法根据噪声性听力损失易感人群分布情况,选择每个兵种高度易感组20人为模型建立组,非易感组18人为对照组,共38人,收集其血清样本。应用磁珠联合基质辅助激光解吸电离飞行时间质谱(matrix-assisted laser desorption/ionization time of flight mass spectrometry,MALDI—TOF—Ms)对两组样本进行差异蛋白研究,筛选出显著性差异的血清蛋白,并应用遗传算法建立诊断模型。结果噪声性听力损失易感人群组与对照组之间共检测出55个差异血清多肽峰,其中有统计学意义的差异峰仅有2个,分子量分别为1083.57Da和1061.68Da(P〈0.05)。以这两个差异蛋白建立数据模型,结果提示该模型诊断敏感度为54.24%,特异度为91.67%。结论噪声性听力损失易感人群组与对照组之间存在差异显著的血清蛋白,应用遗传算法建立血清差异蛋白的诊断模型,可为筛选更适合从事特殊兵种作业的官兵提供参考。
基金Supported by the National Natural Science Foundation of China(No.30572293)the "Eleventh Five" TCM Foundation for Major Clinical Research of PLA(No.2006051002)the Natural Science Foundation of Fujian Province,China(No. 2010J01197)
文摘OBJECTIVE:This study screened serum tumor biomarkers by surface enhanced laser desorption/ionization time-of-flight mass spectrometry(SELDI-TOF-MS) to establish a subset which could be used for the prediction of Qi deficiency syndrome and phlegm and blood stasis in patients with non-small cell lung cancer;and as diagnostic model of Chinese medicine.METHODS:Serum samples from 63 lung cancer patients with Qi deficiency syndrome and phlegm and blood stasis,and 28 lung cancer patients with non-Qi deficiency syndrome and phlegm and blood stasis were analyzed using SELDI-TOF-MS with a PBS II-C protein chip reader.Protein profiles were generated using immobilized metal affinity capture(IMAC3) protein chips.Differentially-expressed proteins were screened.Protein peak clustering and classification analyses were performed using Biomarker Wizard and Biomarker Pattern software packages,respectively.RESULTS:A total of 268 effective protein peaks were detected in the 1,000-10,000 Da molecular range for the 15 serum proteins screened(P<0.05).The decision tree model was M 2284.97,with a sensitivity of 96.2% and a specificity of 66.7%.CONCLUSION:SELDI-TOF-MS techniques,combined with a decision tree model,can help identify serum proteomic biomarkers related to Qi deficiency syndrome and phlegm and blood stasis in lung cancer patients;and the predictive model can be used to discriminate between Chinese medicine diagnostic models of disease.