目的探讨血浆循环microRNA-126浓度与非小细胞肺癌(NSCLC)的相关性及其诊断价值。方法采用实时荧光定量PCR方法检测130例NSCLC患者和作为对照的170例健康人的血浆循环microRNA-126浓度。结果对照组血浆循环microRNA-126浓度显著高于NSCL...目的探讨血浆循环microRNA-126浓度与非小细胞肺癌(NSCLC)的相关性及其诊断价值。方法采用实时荧光定量PCR方法检测130例NSCLC患者和作为对照的170例健康人的血浆循环microRNA-126浓度。结果对照组血浆循环microRNA-126浓度显著高于NSCLC组(P<0.01)。血浆循环microRNA-126浓度ROC曲线下面积(area under theROC curve,AUC)为0.758,95%CI为0.704～0.811(P<0.01)。当血浆microRNA-126浓度为1051 fmol/L时,血浆microRNA-126对NSCLC诊断的特异度为90.0%,灵敏度为46.4%。其浓度与患者的年龄、性别、吸烟,病理分型和分期均无显著的相关性(P>0.05)。结论血浆循环microRNA-126浓度对NSCLC有一定的临床诊断意义,联合其他血浆microRNA或肿瘤标志物,如神经元特异性烯醇化酶、癌胚抗原和细胞角蛋白片段21-1,可以弥补单一检测的局限性,以提高肺癌的阳性检出率,为临床提供可靠的依据。展开更多
AIM:To investigate the content of serum micro RNA-126(mi R-126) and its role in screening retinal endothelial injury and early diagnosis of proliferative diabetic retinopathy.METHODS:The study included 184 serum sampl...AIM:To investigate the content of serum micro RNA-126(mi R-126) and its role in screening retinal endothelial injury and early diagnosis of proliferative diabetic retinopathy.METHODS:The study included 184 serum samples,59 samples from healthy individuals,44 samples from diabetes mellitus(DM) patients without diabetic retinopathy(NDR),42 from non-proliferative diabetic retinopathy(NPDR) patients and 39 samples from proliferative diabetic retinopathy(PDR) patients.The expression of mi R-126 was evaluated using a real-time quantitative polymerase chain reaction.RESULTS:The serum content of mi R-126 declined as the damage degree in the retina.There was significant difference between the two retinopathy groups(P<0.001).No difference was observed in mi R-126 content between healthy individuals and NDR patients(P>0.05).Receiver operating characteristic curve(ROC) analyses indicated that serum mi R-126 had significant diagnostic value for PDR.It yielded an area under the curve(AUC) of ROC of 0.976 with 81.21% sensitivity and 90.34% specificity in discriminating PDR from healthy controls,and an AUC of ROC of 0.919 with 84.75% sensitivity and 94.41% specificity in discriminating NDR and NPDR from healthy controls.When the diagnostic threshold was greater than or equal to 8.43,there was an increase in the possibility of NPDR.When the content of mi R-126 was less than or equal to 5.02,the possibility of the occurrence of PDR increased.CONCLUSION:Serum mi R-126 can serve as a non-invasive biomarker for screening retinal endothelial injury and early diagnosis PDR.展开更多
文摘目的探讨血浆循环microRNA-126浓度与非小细胞肺癌(NSCLC)的相关性及其诊断价值。方法采用实时荧光定量PCR方法检测130例NSCLC患者和作为对照的170例健康人的血浆循环microRNA-126浓度。结果对照组血浆循环microRNA-126浓度显著高于NSCLC组(P<0.01)。血浆循环microRNA-126浓度ROC曲线下面积(area under theROC curve,AUC)为0.758,95%CI为0.704～0.811(P<0.01)。当血浆microRNA-126浓度为1051 fmol/L时,血浆microRNA-126对NSCLC诊断的特异度为90.0%,灵敏度为46.4%。其浓度与患者的年龄、性别、吸烟,病理分型和分期均无显著的相关性(P>0.05)。结论血浆循环microRNA-126浓度对NSCLC有一定的临床诊断意义,联合其他血浆microRNA或肿瘤标志物,如神经元特异性烯醇化酶、癌胚抗原和细胞角蛋白片段21-1,可以弥补单一检测的局限性,以提高肺癌的阳性检出率,为临床提供可靠的依据。
基金Supported by Science and Technology Planning Project of Guangdong Province(No.201 4A020212631)Science and Technology Planning Project of Guangzhou(No.201604020105)Science and Technology Planning Project of Tianhe District,Guangzhou(No.201504KW023)
文摘AIM:To investigate the content of serum micro RNA-126(mi R-126) and its role in screening retinal endothelial injury and early diagnosis of proliferative diabetic retinopathy.METHODS:The study included 184 serum samples,59 samples from healthy individuals,44 samples from diabetes mellitus(DM) patients without diabetic retinopathy(NDR),42 from non-proliferative diabetic retinopathy(NPDR) patients and 39 samples from proliferative diabetic retinopathy(PDR) patients.The expression of mi R-126 was evaluated using a real-time quantitative polymerase chain reaction.RESULTS:The serum content of mi R-126 declined as the damage degree in the retina.There was significant difference between the two retinopathy groups(P<0.001).No difference was observed in mi R-126 content between healthy individuals and NDR patients(P>0.05).Receiver operating characteristic curve(ROC) analyses indicated that serum mi R-126 had significant diagnostic value for PDR.It yielded an area under the curve(AUC) of ROC of 0.976 with 81.21% sensitivity and 90.34% specificity in discriminating PDR from healthy controls,and an AUC of ROC of 0.919 with 84.75% sensitivity and 94.41% specificity in discriminating NDR and NPDR from healthy controls.When the diagnostic threshold was greater than or equal to 8.43,there was an increase in the possibility of NPDR.When the content of mi R-126 was less than or equal to 5.02,the possibility of the occurrence of PDR increased.CONCLUSION:Serum mi R-126 can serve as a non-invasive biomarker for screening retinal endothelial injury and early diagnosis PDR.
