Objective To explore the clinical significance of serum level of pro gastrin releasing peptide 31 98 (ProGRP31 98) for small cell lung cancer (SCLC), in comparison with neuron specific enolase (NSE). Methods S...Objective To explore the clinical significance of serum level of pro gastrin releasing peptide 31 98 (ProGRP31 98) for small cell lung cancer (SCLC), in comparison with neuron specific enolase (NSE). Methods Serum level of ProGRP31 98 and NSE was measured by ELISA respectively in 30 patients with SCLC, 30 with non small cell lung cancer (NSCLC), 15 with benign lung diseases and 15 normal subjects, additionally, 10 SCLC patients after having treatment with chemotherapy were included. The receiver operating characteristic (ROC) curve was used to set the cut off value and evaluate the diagnostic accuracy. Results The serum level of ProGRP31 98 was higher in patients with SCLC than that in other groups. The SCLC patients with extensive disease had a higher value than the patients with limited disease. In SCLC patients with distant metastases, it was also higher than in those without. Increase in serum ProGRP31 98 and NSE was both seen in SCLC patients, but for the former one, the increase was of much greater compared to the normal controls. Given the cut off value for ProGRP31 98 was 40ng·L -1 and for NSE 8μg·L -1 , their sensitivity of diagnosis in SCLC was 73% and 60%, respectively. The area under ROC curve of ProGRP31 98 was significantly larger than that of NSE. All patients responded to chemotherapy showed marked decrease in ProGRP31 98. Conclusion ProGRP31 98 is a more specific and sensitive marker than NSE in the diagnosis of SCLC.展开更多
Objective: This study was designed to investigate promoter methylation status and protein expression of p14^ARF gene in non-small cell lung cancer, and value the role of p14^ARF promoter methylation in carcinogenesis...Objective: This study was designed to investigate promoter methylation status and protein expression of p14^ARF gene in non-small cell lung cancer, and value the role of p14^ARF promoter methylation in carcinogenesis of non-small cell lung cancer. Methods: Promoter methylation status and protein expression of p14^ARF gene in 40 cases of non-small cell lung cancer were analyzed by methylation specific polymerase china reaction (MSP), restriction enzyme-related polymerase chain reaction (RE-PCR) and immunohistochemistry (IHC). Results: The positive rates of p14^ARF promoter methylation in tumor tissues and normal tissues adjacent to cancer were 17.5% (7/40) and 2.5% (1/40) respectively. There were statistically significant differences between them, P〈0.05. The results of RE-PCR were consistent with that of MSP. The expression rate of p14^ARF protein in tumor tissues was significantly lower than that in normal tissues adjacent to cancer, p〈0.01. Promoter methylation status and protein expression of p14^ARF gene in non-small cell lung cancer showed significantly an inverse correlation (r=-0.56, P〈0.01), and both of them did not relate statistically with the clinicopathologic characteristics of patients such as histological classification, clinical stage, differentiation grade and lymph node involvement. Conclusion: Promoter methylation is a crucial mechanism of inactivation of p14^ARF gene. Promoter methylation of p14^ARF gene might he involved in carcinogenesis of non-small cell lung cancer, and is an early event in development process of non-small cell lung cancer. It might be used as a new target in gene treatments in the future.展开更多
Purpose of this study was to evaluate the variation of the dose to gross tumor volume (GTV) related to tumor position and lung density for lung stereotactic body radiotherapy (SBRT) using a virtual phantom. The densit...Purpose of this study was to evaluate the variation of the dose to gross tumor volume (GTV) related to tumor position and lung density for lung stereotactic body radiotherapy (SBRT) using a virtual phantom. The density of the equivalent lung surrounding the GTV (10 mm diameter) was defined as 0.10, 0.15, 0.25, 0.35, and 0.45 g/cm3. A planning target volume (PTV) was generated by adding a uniform 8 mm margin to the internal target volume (ITV). We defined that the 99% of the GTV should be covered by 100% of the prescribed dose using Monte Carlo (MC) calculation. The GTV structure was replicated from ITV to the PTV periphery at 1 mm intervals. Planned dose to the GTV was defined as the predicted dose in the replicated GTV structure. Simulated dose to the GTV was defined as the calculated dose in the replicated GTV structure taking into account the tumor position error. D99 of the planned dose to the GTV at the 8 mm shift position was 78.1%, 81.6%, 87.3%, 91.4% and 94.4% at equivalent lung densities of 0.10, 0.15, 0.25, 0.35, and 0.45 g/cm3, respectively. D99 of the simulated dose to the GTV at the 8 mm shift position was 96.9%, 95.3%, 94.2%, 95.1 % and 96.3% at equivalent lung densities of 0.10, 0.15, 0.25, 0.35, and 0.45 g/cm3, respectively. Planned dose to GTV is strongly dependent on lung density and tumor position errors, while simulated dose to GTV does not show any significant dependence.展开更多
Background and objective Invasion and metastasis is not only the malignant phenotypes of lung cancer but also the main cause of death. Elucidating the molecular mechanism of
近年来,随着肺结节的比例升高,术前经皮肺穿刺活检或经支气管镜活检越来越受到重视。大量临床证据也证实,Ⅰ期非小细胞肺癌(non-small cell lung cancer,NSCLC)的肺穿刺活检是安全可行的。但是,由于肺磨玻璃结节的组织学特点,与实性结...近年来,随着肺结节的比例升高,术前经皮肺穿刺活检或经支气管镜活检越来越受到重视。大量临床证据也证实,Ⅰ期非小细胞肺癌(non-small cell lung cancer,NSCLC)的肺穿刺活检是安全可行的。但是,由于肺磨玻璃结节的组织学特点,与实性结节相比穿刺时更容易发生出血或咳嗽,肿瘤细胞在血流或气流冲击下可能会沿着肺泡壁或针道种植,导致胸膜复发和气腔播散(spread through air spaces,STAS),尤其是胸膜下结节合并有脏层胸膜侵犯和淋巴细胞浸润时需要慎重选择。展开更多
目的:探究模式化单孔胸腔镜肺癌根治术(VATS)对患者肺功能丢失及肿瘤微转移的影响。方法:选取2021年1月—2022年5月样本医院收治的68例行VATS患者作为研究对象,按照治疗方法不同将其分为研究组(n=34,采用模式化单孔VATS)和对照组(n=34,...目的:探究模式化单孔胸腔镜肺癌根治术(VATS)对患者肺功能丢失及肿瘤微转移的影响。方法:选取2021年1月—2022年5月样本医院收治的68例行VATS患者作为研究对象,按照治疗方法不同将其分为研究组(n=34,采用模式化单孔VATS)和对照组(n=34,采用常规三孔VATS),比较两组患者手术相关指标、肺功能指标[第1秒呼吸容积(FEV1)、一氧化碳弥散量(DLCO)、用力肺活量(FVC)]、外周血肿瘤微转移指标[金属基质蛋白酶9(MMP-9)、肺特异性X蛋白(LUNX)、KLF4基因m RNA的相对表达量]、氧化应激指标[血清活性氧(ROS)、缺血修饰白蛋白(IMA)、晚期氧化蛋白产物(AOPP)]、并发症及复发情况。结果:研究组手术用时、术后引流量、术中出血量、住院时间均低于对照组,差异有统计学意义(χ^(2)=4.621、2.314、3.043、5.057,P<0.05);术后,两组患者FEV1、FVC、DLCO均降低,且研究组高于对照组,差异有统计学意义(P<0.05);术后,两组患者外周血MMP-9、LUNX m RNA表达均下降,KLF4 m RNA表达升高,且研究组MMP-9、LUNX m RNA表达低于对照组,KLF4 m RNA表达高于对照组,差异有统计学意义(P<0.05);术后,两组患者血清ROS、IMA、AOPP均升高,且研究组低于对照组,差异有统计学意义(P<0.05);研究组并发症发生率均低于对照组,差异均有统计学意义(χ^(2)=4.660,P<0.05)。结论:模式化单孔VATS能明显改善患者肺功能丢失,降低转移肿瘤细胞活跃度和复发率,促进患者康复和改善预后。展开更多
文摘Objective To explore the clinical significance of serum level of pro gastrin releasing peptide 31 98 (ProGRP31 98) for small cell lung cancer (SCLC), in comparison with neuron specific enolase (NSE). Methods Serum level of ProGRP31 98 and NSE was measured by ELISA respectively in 30 patients with SCLC, 30 with non small cell lung cancer (NSCLC), 15 with benign lung diseases and 15 normal subjects, additionally, 10 SCLC patients after having treatment with chemotherapy were included. The receiver operating characteristic (ROC) curve was used to set the cut off value and evaluate the diagnostic accuracy. Results The serum level of ProGRP31 98 was higher in patients with SCLC than that in other groups. The SCLC patients with extensive disease had a higher value than the patients with limited disease. In SCLC patients with distant metastases, it was also higher than in those without. Increase in serum ProGRP31 98 and NSE was both seen in SCLC patients, but for the former one, the increase was of much greater compared to the normal controls. Given the cut off value for ProGRP31 98 was 40ng·L -1 and for NSE 8μg·L -1 , their sensitivity of diagnosis in SCLC was 73% and 60%, respectively. The area under ROC curve of ProGRP31 98 was significantly larger than that of NSE. All patients responded to chemotherapy showed marked decrease in ProGRP31 98. Conclusion ProGRP31 98 is a more specific and sensitive marker than NSE in the diagnosis of SCLC.
文摘Objective: This study was designed to investigate promoter methylation status and protein expression of p14^ARF gene in non-small cell lung cancer, and value the role of p14^ARF promoter methylation in carcinogenesis of non-small cell lung cancer. Methods: Promoter methylation status and protein expression of p14^ARF gene in 40 cases of non-small cell lung cancer were analyzed by methylation specific polymerase china reaction (MSP), restriction enzyme-related polymerase chain reaction (RE-PCR) and immunohistochemistry (IHC). Results: The positive rates of p14^ARF promoter methylation in tumor tissues and normal tissues adjacent to cancer were 17.5% (7/40) and 2.5% (1/40) respectively. There were statistically significant differences between them, P〈0.05. The results of RE-PCR were consistent with that of MSP. The expression rate of p14^ARF protein in tumor tissues was significantly lower than that in normal tissues adjacent to cancer, p〈0.01. Promoter methylation status and protein expression of p14^ARF gene in non-small cell lung cancer showed significantly an inverse correlation (r=-0.56, P〈0.01), and both of them did not relate statistically with the clinicopathologic characteristics of patients such as histological classification, clinical stage, differentiation grade and lymph node involvement. Conclusion: Promoter methylation is a crucial mechanism of inactivation of p14^ARF gene. Promoter methylation of p14^ARF gene might he involved in carcinogenesis of non-small cell lung cancer, and is an early event in development process of non-small cell lung cancer. It might be used as a new target in gene treatments in the future.
文摘Purpose of this study was to evaluate the variation of the dose to gross tumor volume (GTV) related to tumor position and lung density for lung stereotactic body radiotherapy (SBRT) using a virtual phantom. The density of the equivalent lung surrounding the GTV (10 mm diameter) was defined as 0.10, 0.15, 0.25, 0.35, and 0.45 g/cm3. A planning target volume (PTV) was generated by adding a uniform 8 mm margin to the internal target volume (ITV). We defined that the 99% of the GTV should be covered by 100% of the prescribed dose using Monte Carlo (MC) calculation. The GTV structure was replicated from ITV to the PTV periphery at 1 mm intervals. Planned dose to the GTV was defined as the predicted dose in the replicated GTV structure. Simulated dose to the GTV was defined as the calculated dose in the replicated GTV structure taking into account the tumor position error. D99 of the planned dose to the GTV at the 8 mm shift position was 78.1%, 81.6%, 87.3%, 91.4% and 94.4% at equivalent lung densities of 0.10, 0.15, 0.25, 0.35, and 0.45 g/cm3, respectively. D99 of the simulated dose to the GTV at the 8 mm shift position was 96.9%, 95.3%, 94.2%, 95.1 % and 96.3% at equivalent lung densities of 0.10, 0.15, 0.25, 0.35, and 0.45 g/cm3, respectively. Planned dose to GTV is strongly dependent on lung density and tumor position errors, while simulated dose to GTV does not show any significant dependence.
基金supported by grants from the Key Project of National Natural Science Foundation of China (to Qinghua ZHOU) (No.30430300)National Natural Science Foundation of China (to Qinghua ZHOU) (No.30070333)
文摘Background and objective Invasion and metastasis is not only the malignant phenotypes of lung cancer but also the main cause of death. Elucidating the molecular mechanism of
文摘近年来,随着肺结节的比例升高,术前经皮肺穿刺活检或经支气管镜活检越来越受到重视。大量临床证据也证实,Ⅰ期非小细胞肺癌(non-small cell lung cancer,NSCLC)的肺穿刺活检是安全可行的。但是,由于肺磨玻璃结节的组织学特点,与实性结节相比穿刺时更容易发生出血或咳嗽,肿瘤细胞在血流或气流冲击下可能会沿着肺泡壁或针道种植,导致胸膜复发和气腔播散(spread through air spaces,STAS),尤其是胸膜下结节合并有脏层胸膜侵犯和淋巴细胞浸润时需要慎重选择。
文摘目的:探究模式化单孔胸腔镜肺癌根治术(VATS)对患者肺功能丢失及肿瘤微转移的影响。方法:选取2021年1月—2022年5月样本医院收治的68例行VATS患者作为研究对象,按照治疗方法不同将其分为研究组(n=34,采用模式化单孔VATS)和对照组(n=34,采用常规三孔VATS),比较两组患者手术相关指标、肺功能指标[第1秒呼吸容积(FEV1)、一氧化碳弥散量(DLCO)、用力肺活量(FVC)]、外周血肿瘤微转移指标[金属基质蛋白酶9(MMP-9)、肺特异性X蛋白(LUNX)、KLF4基因m RNA的相对表达量]、氧化应激指标[血清活性氧(ROS)、缺血修饰白蛋白(IMA)、晚期氧化蛋白产物(AOPP)]、并发症及复发情况。结果:研究组手术用时、术后引流量、术中出血量、住院时间均低于对照组,差异有统计学意义(χ^(2)=4.621、2.314、3.043、5.057,P<0.05);术后,两组患者FEV1、FVC、DLCO均降低,且研究组高于对照组,差异有统计学意义(P<0.05);术后,两组患者外周血MMP-9、LUNX m RNA表达均下降,KLF4 m RNA表达升高,且研究组MMP-9、LUNX m RNA表达低于对照组,KLF4 m RNA表达高于对照组,差异有统计学意义(P<0.05);术后,两组患者血清ROS、IMA、AOPP均升高,且研究组低于对照组,差异有统计学意义(P<0.05);研究组并发症发生率均低于对照组,差异均有统计学意义(χ^(2)=4.660,P<0.05)。结论:模式化单孔VATS能明显改善患者肺功能丢失,降低转移肿瘤细胞活跃度和复发率,促进患者康复和改善预后。