目的探讨淋巴细胞绝对数与C反应蛋白比值(lymphocytes to C-reactive protein ratio,LCR)联合预后营养指数(prognostic nutritional index,PNI)对结直肠癌根治术后感染性并发症的预测作用,并分析影响术后感染性并发症的危险因素,建立一...目的探讨淋巴细胞绝对数与C反应蛋白比值(lymphocytes to C-reactive protein ratio,LCR)联合预后营养指数(prognostic nutritional index,PNI)对结直肠癌根治术后感染性并发症的预测作用,并分析影响术后感染性并发症的危险因素,建立一种能够识别术后感染性并发症风险的新模型并对其效能进行评价。方法回顾性分析2019年3月~2022年4月安徽医科大学第三附属医院收治的339例结直肠癌患者的临床资料,随机分为训练组和验证组。采用X-tile软件确定LCR及PNI的最佳截断值,采用单因素和多因素Logistic回归分析确定术后感染性并发症发生的危险因素,然后通过训练组数据构建列线图预测模型,最后评价该预测模型的效能。结果术前LCR及PNI的最佳截断值分别为0.48和45.65,结合两者构建LCR-PNI评分(0、1、2分),评分越高术后出现感染性并发症的概率越大(P<0.05)。基于列线图的预测模型,训练组和验证组的曲线下面积为0.840和0.814,校准曲线一致性较好;决策分析曲线分析表明,该模型具有较高的净获益水平。结论术前LCR-PNI评分是结直肠癌患者术后感染性并发症的独立危险因素。本研究开发的列线图对结直肠癌根治术后感染性并发症具有良好的个体预测能力。展开更多
目的:探索控制营养状况(Controlling Nutritional Status,CONUT)评分、WPCBAL评分、预后营养指数(Prognostic Nutritional Index,PNI)等3种预后评分系统对晚期肺癌患者生存时间的预测效能。方法:收集2018年12月—2021年12月在山东省第...目的:探索控制营养状况(Controlling Nutritional Status,CONUT)评分、WPCBAL评分、预后营养指数(Prognostic Nutritional Index,PNI)等3种预后评分系统对晚期肺癌患者生存时间的预测效能。方法:收集2018年12月—2021年12月在山东省第一医科大学附属肿瘤医院住院期间发生死亡,且具有评估所需全部数据的138例晚期肺癌患者的相关资料,进行回顾性分析。3个评分系统不同组别人群生存期差异的比较采用Log-rank检验,评估系统对终末期肺癌患者2周生存期的预测效能用受试者工作特征(ROC)曲线进行评价。结果:138例终末期肺癌患者的中位年龄为63.5岁,末次入院的中位生存时间为14 d,2周死亡率为51.4%。Log-rank检验结果显示,CONUT≥5分组的生存时间比CONUT<5分组更短,差异有统计学意义(11 d vs 16 d,P=0.046);WPCBAL≥5分组的生存时间比WPCBAL<5分组更短,差异有统计学意义(8 d vs 16 d,P=0.002)。ROC曲线显示,CONUT、WPCBAL对晚期肺癌患者2周生存状态的预测有一定价值,ROC曲线下面积分别为0.613、0.677。CONUT评分以5为截点时,预测晚期肺癌患者2周生存期的灵敏度、特异度分别为0.61、0.54;WPCBAL评分以5为截点时,预测晚期肺癌患者2周生存期的灵敏度、特异度分别为0.76、0.54。结论:CONUT评分、WPCBAL评分对预测晚期肺癌患者短期生存状态有一定价值,但特异度相对较低,仍需进一步研究。展开更多
The preparation of functionally graded materials （FGMs） of （TiB2）pNi with an intermetallic compound media layer of Ni3Al and a substrate of nickel by field-activated pressure-assisted synthesis process （FAPAS） w...The preparation of functionally graded materials （FGMs） of （TiB2）pNi with an intermetallic compound media layer of Ni3Al and a substrate of nickel by field-activated pressure-assisted synthesis process （FAPAS） was investigated. Ni3Al was chosen as a layer of FGM for the first time due to its great deal of heat released during its synthesis from nickel and aluminium powder. The microstructure, phase composition of layers, micro-hardness and elemental concentration profiles across interfaces were characterized. The significant inter-diffusion of elements between layers showed the formation of good bonds. The measured micro-hardness values of the sample increased monotonically to more than 3 500 HK over a distance of 2 mm from the nickel substrate to the surface layer （TiB2）pNi. The results of this investigation demonstrate the feasibility of the FAPAS process for rapid formation of FGMs with good diffusion bonds.展开更多
Objective:This study was designed to evaluate the clinical significance of the serum thymidine kinase 1(TK1)and prognosis nutrition index(PNI)in the prognosis of elderly patients with advanced non-small cell lung canc...Objective:This study was designed to evaluate the clinical significance of the serum thymidine kinase 1(TK1)and prognosis nutrition index(PNI)in the prognosis of elderly patients with advanced non-small cell lung cancer(NSCLC).Methods:A total of 126 elderly patients with advanced non-small cell lung cancer from Jan.2015 to Apr.2016 were enrolled.The clinical,pathological and survival information were collected.The serum TK1 level was measured as well as PNI was calculated when the patient was admitted to our hospital for the first time.The relationship between serum TK1,PNI,and clinical prognostic characteristics was analyzed.The clinical significance of serum TK1 and PNI in the prognosis of elderly patients with advanced non-small cell lung cancer was investigated.Results:The results showed that the survival time of the patients was related to TK1 and PNI.The further Kaplan-Meier method and log-rank tests showed that the long-term outcome of the high-TK1 group was significantly worse than low-TK1 group(mOS,27 m vs.15 m,P=0.047).Besides,the Kaplan-Meier method and log-rank tests also showed that the long-term outcome of high-PNI group was significantly better than low-PNI group(mOS,31.5 m vs.16 m,P=0.015).However,the Spearman’s correlation analysis showed there was no correlation between PNI and TK1.The univariate and multivariate analysis showed that TK1,PNI and the number of metastatic sites were independent prognostic factors.Conclusions:The study confirmed the TK1 and PNI were independent prognostic factors of advanced NSCLC in the elderly.More attention worth is paid in routine clinical practice for patients cell proliferation and nutritional status.展开更多
文摘目的探讨淋巴细胞绝对数与C反应蛋白比值(lymphocytes to C-reactive protein ratio,LCR)联合预后营养指数(prognostic nutritional index,PNI)对结直肠癌根治术后感染性并发症的预测作用,并分析影响术后感染性并发症的危险因素,建立一种能够识别术后感染性并发症风险的新模型并对其效能进行评价。方法回顾性分析2019年3月~2022年4月安徽医科大学第三附属医院收治的339例结直肠癌患者的临床资料,随机分为训练组和验证组。采用X-tile软件确定LCR及PNI的最佳截断值,采用单因素和多因素Logistic回归分析确定术后感染性并发症发生的危险因素,然后通过训练组数据构建列线图预测模型,最后评价该预测模型的效能。结果术前LCR及PNI的最佳截断值分别为0.48和45.65,结合两者构建LCR-PNI评分(0、1、2分),评分越高术后出现感染性并发症的概率越大(P<0.05)。基于列线图的预测模型,训练组和验证组的曲线下面积为0.840和0.814,校准曲线一致性较好;决策分析曲线分析表明,该模型具有较高的净获益水平。结论术前LCR-PNI评分是结直肠癌患者术后感染性并发症的独立危险因素。本研究开发的列线图对结直肠癌根治术后感染性并发症具有良好的个体预测能力。
文摘目的:探索控制营养状况(Controlling Nutritional Status,CONUT)评分、WPCBAL评分、预后营养指数(Prognostic Nutritional Index,PNI)等3种预后评分系统对晚期肺癌患者生存时间的预测效能。方法:收集2018年12月—2021年12月在山东省第一医科大学附属肿瘤医院住院期间发生死亡,且具有评估所需全部数据的138例晚期肺癌患者的相关资料,进行回顾性分析。3个评分系统不同组别人群生存期差异的比较采用Log-rank检验,评估系统对终末期肺癌患者2周生存期的预测效能用受试者工作特征(ROC)曲线进行评价。结果:138例终末期肺癌患者的中位年龄为63.5岁,末次入院的中位生存时间为14 d,2周死亡率为51.4%。Log-rank检验结果显示,CONUT≥5分组的生存时间比CONUT<5分组更短,差异有统计学意义(11 d vs 16 d,P=0.046);WPCBAL≥5分组的生存时间比WPCBAL<5分组更短,差异有统计学意义(8 d vs 16 d,P=0.002)。ROC曲线显示,CONUT、WPCBAL对晚期肺癌患者2周生存状态的预测有一定价值,ROC曲线下面积分别为0.613、0.677。CONUT评分以5为截点时,预测晚期肺癌患者2周生存期的灵敏度、特异度分别为0.61、0.54;WPCBAL评分以5为截点时,预测晚期肺癌患者2周生存期的灵敏度、特异度分别为0.76、0.54。结论:CONUT评分、WPCBAL评分对预测晚期肺癌患者短期生存状态有一定价值,但特异度相对较低,仍需进一步研究。
基金Funded by the National Natural Science Foundation of China(No.50975190)
文摘The preparation of functionally graded materials （FGMs） of （TiB2）pNi with an intermetallic compound media layer of Ni3Al and a substrate of nickel by field-activated pressure-assisted synthesis process （FAPAS） was investigated. Ni3Al was chosen as a layer of FGM for the first time due to its great deal of heat released during its synthesis from nickel and aluminium powder. The microstructure, phase composition of layers, micro-hardness and elemental concentration profiles across interfaces were characterized. The significant inter-diffusion of elements between layers showed the formation of good bonds. The measured micro-hardness values of the sample increased monotonically to more than 3 500 HK over a distance of 2 mm from the nickel substrate to the surface layer （TiB2）pNi. The results of this investigation demonstrate the feasibility of the FAPAS process for rapid formation of FGMs with good diffusion bonds.
文摘Objective:This study was designed to evaluate the clinical significance of the serum thymidine kinase 1(TK1)and prognosis nutrition index(PNI)in the prognosis of elderly patients with advanced non-small cell lung cancer(NSCLC).Methods:A total of 126 elderly patients with advanced non-small cell lung cancer from Jan.2015 to Apr.2016 were enrolled.The clinical,pathological and survival information were collected.The serum TK1 level was measured as well as PNI was calculated when the patient was admitted to our hospital for the first time.The relationship between serum TK1,PNI,and clinical prognostic characteristics was analyzed.The clinical significance of serum TK1 and PNI in the prognosis of elderly patients with advanced non-small cell lung cancer was investigated.Results:The results showed that the survival time of the patients was related to TK1 and PNI.The further Kaplan-Meier method and log-rank tests showed that the long-term outcome of the high-TK1 group was significantly worse than low-TK1 group(mOS,27 m vs.15 m,P=0.047).Besides,the Kaplan-Meier method and log-rank tests also showed that the long-term outcome of high-PNI group was significantly better than low-PNI group(mOS,31.5 m vs.16 m,P=0.015).However,the Spearman’s correlation analysis showed there was no correlation between PNI and TK1.The univariate and multivariate analysis showed that TK1,PNI and the number of metastatic sites were independent prognostic factors.Conclusions:The study confirmed the TK1 and PNI were independent prognostic factors of advanced NSCLC in the elderly.More attention worth is paid in routine clinical practice for patients cell proliferation and nutritional status.
