Accurate preoperative prediction of lymph node metastasis(LNM)in esophageal cancer(EC)patients is of crucial clinical significance for treatment planning and prognosis.AIM To develop a clinical radiomics nomogram that...Accurate preoperative prediction of lymph node metastasis(LNM)in esophageal cancer(EC)patients is of crucial clinical significance for treatment planning and prognosis.AIM To develop a clinical radiomics nomogram that can predict the preoperative lymph node(LN)status in EC patients.METHODS A total of 32 EC patients confirmed by clinical pathology(who underwent surgical treatment)were included.Real-time fluorescent quantitative reverse transcription-polymerase chain reaction was used to detect the expression of B7-H3 mRNA in EC tissue obtained during preoperative gastroscopy,and its correlation with LNM was analyzed.Radiomics features were extracted from multi-modal magnetic resonance imaging of EC using Pyradiomics in Python.Feature extraction,data dimensionality reduction,and feature selection were performed using XGBoost model and leave-one-out cross-validation.Multivariable logistic regression analysis was used to establish the prediction model,which included radiomics features,LN status from computed tomography(CT)reports,and B7-H3 mRNA expression,represented by a radiomics nomogram.Receiver operating characteristic area under the curve(AUC)and decision curve analysis(DCA)were used to evaluate the predictive performance and clinical application value of the model.RESULTS The relative expression of B7-H3 mRNA in EC patients with LNM was higher than in those without metastasis,and the difference was statistically significant(P<0.05).The AUC value in the receiver operating characteristic(ROC)curve was 0.718(95%CI:0.528-0.907),with a sensitivity of 0.733 and specificity of 0.706,indicating good diagnostic performance.The individualized clinical prediction nomogram included radiomics features,LN status from CT reports,and B7-H3 mRNA expression.The ROC curve demonstrated good diagnostic value,with an AUC value of 0.765(95%CI:0.598-0.931),sensitivity of 0.800,and specificity of 0.706.DCA indicated the practical value of the radiomics nomogram in clinical practice.CONCLUSION This study developed a radiomics nomogram that includes radiomics features,LN status from CT reports,and B7-H3 mRNA expression,enabling convenient preoperative individualized prediction of LNM in EC patients.展开更多
目的:探讨丹芍化纤方抗肝纤维化的作用机制方法:采用Ⅳ型胶原酶消化及Ficoll密度梯度离心的方法, 分离、培养大鼠肝细胞,加入5%、10%、20%药物血清干预体外培养的肝细胞,用MTT法测定肝细胞的增生,荧光实时定量PT-PCR(Real Time RT—PCR...目的:探讨丹芍化纤方抗肝纤维化的作用机制方法:采用Ⅳ型胶原酶消化及Ficoll密度梯度离心的方法, 分离、培养大鼠肝细胞,加入5%、10%、20%药物血清干预体外培养的肝细胞,用MTT法测定肝细胞的增生,荧光实时定量PT-PCR(Real Time RT—PCR)法检测肝细胞内天冬氨酸特异的半胱氨酸蛋白酶-3(caspase-3)mRNA表达,并检测培养上清中的白蛋白. 结果:丹芍化纤方药物血清对肝细胞的增生及白蛋白合成有促进作用,能显著下调肝细胞内caspase-3mRNA的表达, 其表达水平与正常大鼠血清组比较有显著性差异,呈明显的浓度依赖关系. 结论:丹芍化纤方发挥抗肝纤维化作用与其促进肝细胞增生、蛋白合成功能,抑制肝细胞凋亡有关.展开更多
目的探讨前列腺按摩后前列腺液沉渣中DD3mRNA含量在前列腺癌诊断中的应用价值。方法在前列腺穿刺活检前或术前麻醉后收集前列腺按摩后患者的前列腺液。其中前列腺癌(Pca)患者31例,前列腺增生患者(BPH)59例,离心取细胞沉淀物,用荧光实时...目的探讨前列腺按摩后前列腺液沉渣中DD3mRNA含量在前列腺癌诊断中的应用价值。方法在前列腺穿刺活检前或术前麻醉后收集前列腺按摩后患者的前列腺液。其中前列腺癌(Pca)患者31例,前列腺增生患者(BPH)59例,离心取细胞沉淀物,用荧光实时定量逆转录-聚合酶链反应(Real time RT-PCR)方法检测DD3mRNA和PSAmRNA含量,以PSAmRNA作为管家基因校正前列腺液沉渣中的前列腺细胞,以DD3mRNA/PSAmRNA比值表示DD3mRNA含量。SPSS 13.0分析相关数据,以穿刺活检或术后病理检查结果为金标准,用受试者工作特征曲线(ROC)对DD3mRNA诊断性能进行分析,并与血清tPSA进行比较,同时探讨前列腺液DD3mRNA相对定量值阳性率与病理分级的关系。结果前列腺癌患者前列腺液DD3mRNA表达量明显高于BPH,差异具有统计学意义(P<0.05)。ROC曲线分析结果显示,曲线下面积(ROC-AUC)=0.879(95%CI=0.795～0.964)。DD3mRNA相对定量值截断值取0.015313时,其诊断效能最大。其灵敏度为0.806,特异度为0.864,准确性0.67,阳性预测值75.8%,阴性预测值89.5%,阳性似然比、阴性似然比分别为5.97、0.224。若血清tPSA分别以4ng/ml和10ng/ml为截断值时,灵敏度分别为83.8%和54.84%,特异度分别为61.02%和83.05%,不同病理分级之间DD3mRNA的阳性率差异无统计学意义(P>0.05)。结论前列腺液中DD3mRNA测定的诊断性能明显高于血清PSA,作为前列腺癌的一种非损伤性诊断方法具有良好的应用前景。展开更多
基金The Yancheng Key Research and Development Program(Social Development),No.YCBE202324。
文摘Accurate preoperative prediction of lymph node metastasis(LNM)in esophageal cancer(EC)patients is of crucial clinical significance for treatment planning and prognosis.AIM To develop a clinical radiomics nomogram that can predict the preoperative lymph node(LN)status in EC patients.METHODS A total of 32 EC patients confirmed by clinical pathology(who underwent surgical treatment)were included.Real-time fluorescent quantitative reverse transcription-polymerase chain reaction was used to detect the expression of B7-H3 mRNA in EC tissue obtained during preoperative gastroscopy,and its correlation with LNM was analyzed.Radiomics features were extracted from multi-modal magnetic resonance imaging of EC using Pyradiomics in Python.Feature extraction,data dimensionality reduction,and feature selection were performed using XGBoost model and leave-one-out cross-validation.Multivariable logistic regression analysis was used to establish the prediction model,which included radiomics features,LN status from computed tomography(CT)reports,and B7-H3 mRNA expression,represented by a radiomics nomogram.Receiver operating characteristic area under the curve(AUC)and decision curve analysis(DCA)were used to evaluate the predictive performance and clinical application value of the model.RESULTS The relative expression of B7-H3 mRNA in EC patients with LNM was higher than in those without metastasis,and the difference was statistically significant(P<0.05).The AUC value in the receiver operating characteristic(ROC)curve was 0.718(95%CI:0.528-0.907),with a sensitivity of 0.733 and specificity of 0.706,indicating good diagnostic performance.The individualized clinical prediction nomogram included radiomics features,LN status from CT reports,and B7-H3 mRNA expression.The ROC curve demonstrated good diagnostic value,with an AUC value of 0.765(95%CI:0.598-0.931),sensitivity of 0.800,and specificity of 0.706.DCA indicated the practical value of the radiomics nomogram in clinical practice.CONCLUSION This study developed a radiomics nomogram that includes radiomics features,LN status from CT reports,and B7-H3 mRNA expression,enabling convenient preoperative individualized prediction of LNM in EC patients.
文摘目的探讨前列腺按摩后前列腺液沉渣中DD3mRNA含量在前列腺癌诊断中的应用价值。方法在前列腺穿刺活检前或术前麻醉后收集前列腺按摩后患者的前列腺液。其中前列腺癌(Pca)患者31例,前列腺增生患者(BPH)59例,离心取细胞沉淀物,用荧光实时定量逆转录-聚合酶链反应(Real time RT-PCR)方法检测DD3mRNA和PSAmRNA含量,以PSAmRNA作为管家基因校正前列腺液沉渣中的前列腺细胞,以DD3mRNA/PSAmRNA比值表示DD3mRNA含量。SPSS 13.0分析相关数据,以穿刺活检或术后病理检查结果为金标准,用受试者工作特征曲线(ROC)对DD3mRNA诊断性能进行分析,并与血清tPSA进行比较,同时探讨前列腺液DD3mRNA相对定量值阳性率与病理分级的关系。结果前列腺癌患者前列腺液DD3mRNA表达量明显高于BPH,差异具有统计学意义(P<0.05)。ROC曲线分析结果显示,曲线下面积(ROC-AUC)=0.879(95%CI=0.795～0.964)。DD3mRNA相对定量值截断值取0.015313时,其诊断效能最大。其灵敏度为0.806,特异度为0.864,准确性0.67,阳性预测值75.8%,阴性预测值89.5%,阳性似然比、阴性似然比分别为5.97、0.224。若血清tPSA分别以4ng/ml和10ng/ml为截断值时,灵敏度分别为83.8%和54.84%,特异度分别为61.02%和83.05%,不同病理分级之间DD3mRNA的阳性率差异无统计学意义(P>0.05)。结论前列腺液中DD3mRNA测定的诊断性能明显高于血清PSA,作为前列腺癌的一种非损伤性诊断方法具有良好的应用前景。
