Relevance of EGFR gene mutation with pathological features and prognosis in patients with non-small-cell lung carcinoma

Objective:To study the relevance of EGFR gene mutation with pathological features and prognosis in patients with non-small-cell lung carcinoma.Methods:A total of 297 patients from July 2009 to May 2013 were chosen as objects.EGFR gene mutation were detected with fluorescence quantitative PCR.Relevance of EGFR gene mutation with clinical and pathological features was analyzed,and the prognosis of EGFR- mutant-patients and that of EGFR- wide type-patients was compared.Results:In 297 patients.136(45.79%) showed EGFR gene mutation.EGFR gene mutation had no significant relevance with age.gender,smoking history,family history of cancer and clinical stage(P>0.05);there was significant relevance between EGFR gene mutation and blood type,pathologic types,differentiation and diameter of cancer(P<0.05).The difference between prognosis of EGFR- mutant-patients and that of EGFR- wide type-patients was statistical significance(P<0.05).Conclusions:EGFR gene mutation has significant relevance with pathological features,the prognosis of EGFRmutant-paticnts is better than that of EGFR- wide type-patients.

Inhibitory Effect of MiR-449b on Cancer Cell Growth and Invasion through LGR4 in Non-Small-Cell Lung Carcinoma

Non-small-cell lung carcinoma （NSCLC） is one of the most frequently diagnosed malignancies worldwide. Previous studies have shown that microRNA-449b （miR-449b） functions as a tumor suppressor in many cancers. However, the role of miR- 449b in NSCLC is still unknown. In the present study, miR-449b was significantly down- regulated in NSCLC samples and cell lines. Bioinformatics analysis revealed that 3＇-UTR region of leucine rich repeat containing G protein-coupled receptor 4 （LGR4） mRNA had putative complementary sequences to miR-449b, which was further confirmed by the luciferase assay. Western blotting showed that restoration of miR-449b in NSCLC cells decreased the expression of LGR4. Interestingly, over-expression of miR-449b inhibited growth and invasion of NSCLC cells in vitro. Furthermore, ectopic expression of LGR4 reversed miR-449b-suppressed proliferation and invasion of NSCLC cells. Therefore, the data of the present study demonstrate that miR-449b inhibits tumor cell growth and invasion by targeting LGR4 in NSCLC.

Pang Fuwan Uses Yao Medicine to Observe the Therapeutic Effects on the Physical and Mental Symptoms of Patients with Advanced Non-Small Cell Lung Cancer

Objective: Investigate the efficacy and safety of Yao Medicine in the treatment of advanced non-small-cell lung carcinoma, and explore the best therapeutic measure for clinical benefit. Methods: From July 2020 to July 2022, 84 patients with advanced non-small-cell lung carcinoma were selected and randomly divided into the Observation Group and control group, and the control group was treated with routine Western medicine, with 42 cases in each group. The activity of daily living (ADL) was assessed before and after treatment, meanwhile, the self-rating depression scale (SDS) and self-rating anxiety SAS (SAS) were used to assess the improvement of a bad mood, and quality of life SF-36 was used to assess the quality of life, to judge the efficacy and safety. Results: The effective rate of observation group was 91.67%. The effective rate of the control group was 76.19%. The effective rate of the observation group was significantly higher than that of the control group (P 0.05). There were no significant differences in the scores of SDS, SAS and quality of life between the two groups before treatment (P > 0.05), and after treatment, the scores of SDS, SAS and quality of life in the two groups were compared with those in the control group (P > 0.05), the scores of VAS, SDS and SAS decreased significantly, while ESCV, angle of straight leg elevation, ADL, physiological score, emotional score, social score and health status score increased significantly, the difference was statistically significant (P 0.05). Conclusion: Yao Medicine can improve the psychosomatic symptoms of patients with advanced non-small-cell lung carcinoma better, with better efficacy and higher safety.

Pembrolizumab-emerging treatment of pulmonary sarcomatoid carcinoma: A case report

BACKGROUND Few studies have addressed the efficacy of pembrolizumab in pulmonary sarcomatoid carcinoma(PSC),a rare,previously rapidly fatal subtype of nonsmall-cell lung cancer.CASE SUMMARY We report the case of a 69-year-old man presented with respiratory distress caused by a large left upper lung lobe mass diagnosed as PSC with programmed death-ligand 1 expressed on more than 50 percent of tumor cells.The patient was started on pembrolizumab and,after 5 cycles,there was a more than 80 percent decrease in the size of the tumor mass.Further decrease was seen at the end of 10 cycles.The patient has been tolerating pembrolizumab well,with no limiting side-effects.Fourteen months after first coming into the hospital,he remains asymptomatic.CONCLUSION Pembrolizumab appears as a viable emerging treatment for PSC.

Advances in adjuvant systemic therapy for non-small-cell lung cancer

Non-small-cell lung cancer remains a leading cause of death around the world. For most cases, the only chance of cure comes from resection for localised disease, however relapse rates remain high following surgery. Data has emerged over recent years regarding the utility of adjuvant chemotherapy for improving disease-free and overall survival of patients following curative resection. This paper reviews the clinical trials that have been conducted in this area along with the studies integrating radiation therapy in the adjuvant setting. The role of prognostic gene signatures are reviewed as well as ongoing clinical trials including those incorporating biological or targeted therapies.

Unresectable stage Ⅲ non-small-cell lung cancer: Have we made any progress?

Lung cancer is responsible for the most cancer deaths worldwide with an incidence that is still rising. One third of patients have unresectable stage ⅢA or stage ⅢB disease. The standard of care for locally advanceddisease in patients with good performance status consists of combined modality therapy in particular concurrent chemoradiotherapy. But despite a lot of efforts done in the past, local control and survival of patients with unresectable stage Ⅲ non-small-cell lung cancer(NSCLC) remains poor. Improving outcomes for patients with unresectable stage Ⅲ NSCLC has therefore been an area of ongoing research. Research has focused on improving systemic therapy, improving radiation therapy or adding a maintenance therapy to consolidate the initial therapy. Also implementation of newer targeted therapies and immunotherapy has been investigated as well as the option of prophylactic cranial irradiation. This article reviews the latest literature on improving local control and preventing distant metastases. It seems that we have reached a plateau with conventional chemotherapy. Radiotherapy dose escalation did not improve outcome although increasing radiation dose-intensity with new radiotherapy techniques and the use of newer agents, e.g., immunotherapy might be promising. In the future well-designed clinical trials are necessary to prove those promising results.

Apoptosis of Lewis Lung Carcinoma Cells Induced by Microwave via p53 and Proapoptotic Proteins In vivo

Background： Microwave therapy is a minimal invasive procedure and has been employed in clinical practice for the treatment of various types of cancers. However, its therapeutic application in non-small-cell lung cancer and the underlying mechanism remains to be investigated. This study aimed to investigate its effect on Lewis lung carcinoma （LLC） tumor in vivo. Methods： Fifty LLC tumor-bearing C57BL/6 mice were adopted to assess the effect of microwave radiation on the growth and apoptosis of LLC tumor in vivo. These mice were randomly assigned to 10 groups with 5 mice in each group. Five groups were treated by single pulse microwave at different doses for different time, and the other five groups were radiated by multiple-pulse treatment of a single dose. Apoptosis of cancer cells was determined by terminal deoxynucleotidyl transferase dUTP nick-end labeling assay. Western blotting was applied to detect the expression of proteins. Results： Single pulse of microwave radiation for 5 min had little effect on the mice. Only 15-min microwave radiation at 30 mW/cm2 significantly increased the mice body temperature （2.20 ± 0.82）℃ as compared with the other groups （0.78 ± 0.29 ℃, 1.24 ± 0.52 ℃, 0.78 ± 0.42 ℃, respectively）, but it did not affect the apoptosis of LLC tumor cells significantly. Continous microwave radiation exposure, single dose microwave radiation once per day for up to seven days, inhibited cell division and induced apoptosis of LLC tumor cells in a dose- and duration-dependent manner. It upregulated the protein levels of p53, Caspase 3, Bax and downregulated Bcl-2 protein. Conclusions： Multiple exposures of LLC-bearing mice to microwave radiation effectively induced tumor cell apoptosis at least partly by upregulating proapoptotic proteins and downregulating antiapoptotic proteins. Continuous radiation at low microwave intensity Ibr a short time per day is promising in treating non-small-cell lung cancer.

^(18)F-FDG uptake as a biologic factor predicting outcome in patients with resected non-small-cell lung cancer

Background The outcome of surgical treatment of non-small-cell lung cancer （NSCLC） remains poor. In many patients the biological behavior of NSCLC does not follow a definite pattern, and can not be accurately predicted before treatment. ^18F-fluoro-2-deoxy-glucose （^18F-FDG） uptake on positron-emission tomography （PET） is associated with the aggressiveness of NSCLC. The present study focused on the role of ^18F-FDG uptake in predicting the outcome of surgically treated patients with NSCLC. Methods A retrospective analysis was made of 82 patients who underwent complete resection and preoperative FDG PET. The maximum standardized uptake value （SUVmax）, in addition to five clinicopathological factors and three biomolecular factors, which could possibly influence survival, was compared for possible association with patients＇ recurrence and survival, by the Log-rank test in univariate analysis and the Cox proportional hazards model in multivariate analysis. The association between SUVmax and other factors was also analyzed. Results Patients with SUVmax more than 11 had a disease-free survival and overall survival shorter than patients with SUVmax less than 11 in univariate analyses （P〈0.001, P=0.002）. In the multivariate analysis, SUVmax （dichotomized by 11） was the only significant predictor for tumor recurrence. TNM stage and SUVmax （dichotomized by 11） were independent predictors for the overall survival. Associations of SUVmax with p53 overexpression, proliferating cell nuclear antigen （PCNA） labeling index and microvascular density of the tumor were significant in the entire group. Conclusions ^18F-FDG uptake on PET may be used to noninvasively assess biological aggressiveness of NSCLC in vivo, identifying the surgically-treated patients with poor prognosis who could benefit from additional therapy.

Chemotherapy in conjunction with traditional Chinese medicine for survival of elderly patients with advanced non-small-cell lung cancer:protocol for a randomized double-blind controlled trial

BACKGROUND： Traditional Chinese medicine （TCM） is considered an important complementary therapy with beneficial effects for cancer patients. Elderly patients with non-small-cell lung cancer （NSCLC） are a complex patient group with increasing co-morbidity and shrinking physiological reserve, and may derive substantial benefit from the supportive aspects of TCM Researchers from Shanghai Longhua Hospital found that qi and yin deficiency is a common syndrome in patients with stage III or IV lung cancer. This project was designed to study the combination of single-agent chemotherapy with TCM methods of benefiting qi and yin in elderly patients with advanced NSCLC. METHODS AND DESIGN： This is a double-blind controlled, multi-center, and prospective study with randomly selected participants from elderly NSCLC patients in China. Seventy-six patients who meet the inclusion criteria will be allocated into two groups, which will receive treatments of 3-week single-agent chemotherapy with TCM or placebo for four cycles Progression-free survival （PFS） is the primary end point, and the secondary end points are overall survival, objective response rate, time-to-progression, and quality of life （EORTC QLQ-LC43, and TCM syndrome score） Meanwhile, other end points such as toxicity, side effects and safety of the treatments will be assessed. DISCUSSION： Results from this study may provide evidence on the effectiveness, and parameters for the usage of single-agent chemotherapy combined with or without TCM on PFS of elderly patients with NSCLC.

Effect of scar-producing moxibustion at the acupoints Zusanli(ST 36) and Feishu(BL 13) on neutrophil-to-lymphocyte ratio and quality of life in patients with non-small-cell lung cancer: A randomized,controlled trial

OBJECTIVE: To evaluate the effect of heat stimulation via scar-producing moxibustion at the acupoints Zusanli(ST 36) and Feishu(BL 13) on the neutrophil-to-lymphocyte ratio(NLR) and quality of life in patients with non-small-cell lung cancer(NSCLC).METHODS: Seventy patients with NSCLC were randomly assigned into two groups: group A received scar-producing moxibustion at the acupoints Zusanli(ST 36) and Feishu(BL 13) every day for 6 weeks, while group B received no intervention(control group). Outcome measures were the NLR and the scores from the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire(EORTC QLQ-C30). The NLR and the EORTC QLQ-C30 were assessed at baseline and at the end of 6 weeks.RESULTS: Five participants dropped out, leaving afinal total of 65 participants who completed the trial. Groups A and B had a similar mean NLR at baseline. After the treatment course, the NLR in group A was significantly lower than that in group B(P <0.001). Compared with group B, the EORTC QLQ-C30 scores in group A were significantly greater in terms of global health status or quality of life(P < 0.001) and function(P < 0.05), and significantly lower in terms of symptoms(P < 0.05).CONCLUSION: The present study suggests that performing scar-producing moxibustion by heat-stimulating the acupoints Zusanli(ST 36) and Feishu(BL13) effectively decreases the NLR and improves the quality of life in patients with NSCLC.

Role of positron emission tomography-computed tomography in non-small cell lung cancer

Lung cancer is the leading cause of cancer-related mortality worldwide. Non-small cell carcinoma and small cell carcinoma are the main histological subtypes and constitutes around 85% and 15% of all lung cancer respectively. Multimodality treatment plays a key role in the successful management of lung cancer depending upon the histological subtype, stage of disease, and performance status. Imaging modalities play an important role in the diagnosis and accurate staging of the disease, in assessing the response to neoadjuvant therapy, and in the follow-up of the patients. Last decade has witnessed voluminous upsurge in the use of positron emission tomography-computed tomography(PET-CT); role of PET-CT has widened exponentially in the management of lung cancer. The present article reviews the role of 18-fluoro-deoxyglucose PET-CT in the management of non small cell lung cancer with emphasis on staging of the disease and the assessment of response to neoadjuvant therapy based on available literature.

Parametrization of Survival Measures (Part III) Clinical Evidences in Single Arm Studies with Endpoint of Overall Survival

Many clinical trials have prospective or retrospective data-sets without comparison to the control-group formed by the same cohort as the active one. The measured single arm naturally contains the relevant information, however, in most of the cases, it is impossible to obtain it from the complex survival curve without a reference. In our previous articles [1] [2], we had shown that the self-similar Weibull distribution fits the self-organized biological mechanisms well, and so it is the best option to study the single-arm survival curves, where self-organizing process is actively present. With the Weibull decomposition of the survival curve, we can fit at least two subgroups of patients. The weighted sum of the decomposed fractions could be optimized analytically and determining the best parameters of the components and the best composition ratio of the weighted sum is also possible. In this part of our series of articles, we will show how the method works in a real clinical environment through modulated electro-hyperthermia (mEHT) as a complementary method, applied curatively when no other conventional curative therapies are available. The decomposed function of the non-responding group provides an excellent agreement with the historical controls in pancreatic cancer and non-small-cell-lung-cancer studies. In the case of glioblastoma multiform, the historical missing control from the institute where the treatment was made does not allow a comparison. We used a modified Hardin-Jones-Pauling statistical estimation and had shown in single arm clinical trials for advanced pancreas, non-small cell lung cancer and glioblastoma multiforme, that this estimation is applicable, and it is corresponding with the historical arm and with the non-responding group where this comparison was available.

S100A4和uPA在非小细胞性肺癌中的表达及临床意义

[目的]探讨S100A4和尿激酶型纤溶酶原激活剂(uPA)在非小细胞性肺癌(NSCLC)组织中的表达及临床意义.[方法]采用免疫组化二步法(PV法)检测89例手术切除的NSCLC组织中S100A4和uPA蛋白的表达探讨其与临床病理因素及预后的关系.[结果]89例标本中S100A4和uPA阳性率分别为84.3％(75/89)、78.6％(70/89),两者表达显著相关(P＜0.01)；S100A4表达与肿瘤的TNM分期、淋巴结转移及远处转移显著相关,uPA表达与肿瘤的TNM分期、淋巴结转移及分化程度显著相关.S100A4蛋白、uPA蛋白阴性组患者中位生存时间均明显大于阳性组；Cox比例风险模型(x2=64.297,P=0.000)多因素分析表明,分化程度(P=0.005)、淋巴结转移(P=0.023)、S100A4过表达(P=0.000)及uPA过表达(P=0.003)为影响 NSCLC 预后的独立因素.[结论]NSCLC组织中存在S100A4、uPA的高表达,且两者之间的表达强度具有等级相关性,其高表达提示患者预后不良；联合检测二者表达可预测NSCLC发生转移的危险性及患者预后情况.

Clinical observation of Yiqi Qingdu Prescription(益气清毒方)on the treatment of intermediate-stage and advanced non-small-cell lung cancer

OBJECTIVE:To observe the effects of the Yiqi Qingdu prescription(益气清毒方)on intermediate-stage and advanced non-small-cell lung cancer(NSCLC).METHODS:In total,300 patients with intermediate-stage or advanced NSCLC were randomly and equally divided into three groups using computer-generated random numbers as follows:Western medicine(WM),Chinese medicine(CM),and integrated Traditional Chinese and Western Medicine(IM).After 3 months of treatment,the overall response rate(ORR);disease control rate(DCR);symptom score(SS);Karnofsky performance status(KPS);adverse event score;counts of CD3^(+),CD4^(+),and CD8^(+)cells;CD4^(+)/CD8^(+)ratio;and carcinoembryonic antigen(CEA)level were compared among the groups.RESULTS:The ORRs were 30.36%,20.24%,and 7.87%in the IM,CM,and WM groups,respectively,whereas the DCRs were 85%,75%,and 73%,respectively.Compared to the CM group,the ORR was significantly higher in the WM and IM groups,whereas the DCR was significantly higher in the IM group(all P<0.05).SS was obviously higher in the WM group than in the other two groups(both P<0.01).KPS was significantly lower in the WM group after treatment(P=0.005).The mean number of adverse events was significantly lower in the CM(2.2±1.3)and IM(2.4±1.3)groups than in the WM group(4.6±1.7,both P<0.05).CD3^(+)cell counts were significantly decreased in the WM group(P=0.031).In the IM group,CD8^(+)cell counts were increased after treatment,whereas the CD4^(+)/CD8^(+)ratio was decreased(both P<0.01).Compared with the WM group,CD3^(+)(P=0.01),CD4^(+)(P=0.044),and CD8^(+)(P=0.009)cell counts were significantly higher in the IM group,whereas the CD4^(+)/CD8^(+)ratio was significantly lower(P=0.011).Relative to the CM group,CD8^(+)cell counts were significantly higher(P=0.001)and the CD4^(+)/CD8^(+)ratio was significant ly lower in the IM group(P=0.001).CEA levels were significantly increased in the CM group(P=0.023).CONCLUSION:The Yiqi Qingdu prescription can improve the outcomes of WM in patients with NSCLC.

TIMD4 对CNSCLC患者预后的诊断价值分析

【目的】探讨T细胞免疫球蛋白和黏蛋白结构域4(TIMD4)对中央型非小细胞肺癌(CNSCLC)患者预后的诊断价值。【方法】选择2015年4月至2017年6月在榆林市横山区人民医院接受治疗的139例CNSCLC患者,所有患者均采用经导管动脉化疗栓塞(TACE)联合经皮射频消融(RFA)治疗,根据3年预后情况分为生存组和死亡组。采用蛋白质免疫印迹法检测单个核细胞中TIMD4表达水平,分析TIMD4对CNSCLC患者预后的诊断价值。【结果】生存组和死亡组TIMD4水平均随时间进展呈降低趋势(P<0.05)。生存组T1、T2时TIMD4水平低于死亡组,差异均有统计学意义(P<0.05)。高TIMD4组中位生存时间低于低TIMD4组,差异有统计学意义(P<0.05)。COX回归分析结果显示:TNM分期和T2时TIMD4是CNSCLC患者预后的独立危险因素(P<0.05);分化程度高和服用靶向药是CNSCLC患者预后的独立保护因素(P<0.05)。由TNM分期、分化程度、服用靶向药和T2时TIMD4构建的列线图回归模型的拟合曲线与理想曲线重合度较高,且一致性指数C-index为0.803。【结论】CNSCLC患者TIMD4水平高提示预后不良风险高,基于TIMD4构建的列线图回归模型有较高的精准度和区分度,可评估CNSCLC患者预后。

HIF-1α、VEGF及MMP-9在非小细胞肺癌组织中的表达及其意义

【目的】探讨缺氧诱导因子-la（HIF-1a）、血管内皮生长因子（VEGF）及基质金属蛋白酶-9（MMP-9）在非小细胞肺癌（NSCLC）组织中的表达。【方法】采用免疫组化法检测91例NSCLC组织及相对应的癌旁正常组织中HIF-la、VEGF及MMP-9的阳性表达，并分析其与NSCLC临床病理参数的关系。【结果】NSCLC中HIF_1a、VEGF及MMP-9阳性率均显著高于癌旁正常组织（P〈0．05）；低分化NSCLC中HIF-1α、VEGF及MMP-9阳性率高于中高分化（P〈0．05）；Ⅲ～Ⅳ期的NSCLC中HIF-1α、VEGF及MMP-9阳性率高于I～Ⅱ期（P〈0．05），有淋巴结转移的NSCLC中HIF-1q、VEGF及MMP-9阳性率高于无淋巴结转移的（P〈0．05）；而NSCLC中HIF-1α、VEGF及MMP-9阳性率与年龄、性别、肿瘤直径及病理类型无关（P〉0．05）；NSCLC中HIF-1a、VEGF及MMP-9阳性表达呈两两正相关（P〈0．05）。【结论】HIF_1a、VEGF及MMP-9在NSCLC组织中高表达，且与病情的发生发展相关，三者联合检测可能为NSCLC的预后评估及靶向治疗提供依据。

NSCLC组织中MMP-9、bcl-2及HSP90α表达及其临床意义

【目的】探讨非小细胞肺癌（NSCLC）组织中基质金属蛋白酶．9（MMP-9）、B淋巴细胞瘤_2基因（bcl-2）、热休克蛋白90α（HsP90d）的蛋白及其mRNA的表达情况及临床意义。【方法】收集62例NSCLC患者的病理组织标本作为观察组，并取其中30例患者癌旁正常肺组织（距肿瘤边缘〉3cm）作为对照组，测定两组MMP-9、bcl-2、HSP90仅蛋白及其mRNA表达水平及与临床病理特征的相关性。【结果】①观察组MMP。9mRNA、bcl-2mRNA、HSP90α mRNA蛋白表达水平及阳性率均高于对照组（P〈0．05）；②不同TNM分期、伴或不伴淋巴结转移NSCLC患者组织MMP-9、HSP90ct蛋白阳性率比较差异有显著性（P〈0．05），不同组织类型NSCLC患者组织bcl-2蛋白阳性率比较差异有显著性（P〈0．05）。【结论】NSCLC组织中MMP-9、bcl-2、HSP900t蛋白阳性率均高于癌旁正常组织，MMP-9、bcl-2表达与TNM分期及淋巴结转移有关，bcl-2蛋白表达与NSCLC组织学类型有关。

Mechanism underlying the effect of Liujunzi decoction(六君子汤)on advanced-stage non-small cell lung cancer in patients after first-line chemotherapy

OBJECTIVE:To further clarify the anticancer mechanisms of Liujunzi decoction(六君子汤)and provide possible targets for the treatment of advanced-stage nonsmall cell lung cancer(NSCLC)by re-analyzing differential gene expression profile of peripheral blood mononuclear cells(PBMCs)from Liujunzi decoctiontreated NSCLC patients receiving first-line chemotherapy.METHODS:The PBMC gene expression microarray data set GSE61926 was retrieved from a high throughput gene expression database.Differentially expressed genes(DEGs)were screened by paired sample t-test and the multiple ratio method.Gene ontology and Kyoto encyclopedia of genes and genomes(KEGG)pathway analyses were performed using the DAVID database.The protein–protein interaction(PPI)network was constructed using interaction gene library retrieval tools and Cytoscape software.RESULTS:A total of 162 DEGs were identified,with 67 upregulated genes and 95 downregulated genes.The functional distribution of Gene Oncology(GO)genes showed that DEGs were mostly concentrated in extracellular regions,calcium ion binding,and transcriptase activity.KEGG pathway analysis showed that cytokine–cytokine receptor interactions were significantly enriched.PPI network analysis screened out the top 10 central protein-coding genes with the highest nodal degree:IL2,PIWIL4,DICER1,PIWIL2,SAA1,XCL1,IL22RA1,ARHGAP11A,DCP1A,and GDNF.Among them,the central protein-coding gene with the highest node degree was IL2.In addition,the central protein-coding genes with high node degrees and high molecular complex detection(MCODE)scores were PIWIL4,DICER1,PIWIL2,and DCP1A,all of which are related to tumor development.CONCLUSIONS:One signaling pathway and 10 central protein-coding genes related to anticancer mechanisms were screened by re-analysis of GSE61926 data.IL2,PIWIL4,DICER1,PIWIL2,and DCP1 A may have important roles in the mechanism of Liujunzi decoction treatment against NSCLC.Our results suggest that the anticancer mechanism of Liujunzi decoction may be related to gene silencing by RNA and the biological processes of piwi-interacting RNA and other small RNAs.

肺鳞癌患者血清miRNA-181a的表达及其对肺癌细胞功能的影响

【目的】探讨肺鳞癌患者血清中microRNA-181a（miR-181a）水平的变化及其对人肺鳞癌细胞生物学功能的影响。【方法】选择56例肺鳞癌患者和50名健康成人，采用stem-[oop定量PCR的方法检测其血清中miR-181a的表达变化；体外实验采用CCK8和Transwell小室实验检测miR-181a对人肺鳞癌细胞株NCI-H226增殖、侵袭和迁移能力的影响。【结果】miR-181a在肺鳞癌患者血清中表达较健康成人显著降低（P〈0．05）；miR181a可明显抑制肺鳞癌细胞NCI—H226的增殖、侵袭和迁移。【结论】在肺鳞癌患者miR-181a是一种保护性的微小RNA，具有较好的诊断和治疗前景。

Expression of Syk in non-small cell lung cancer and its relationship with clinicopathological parameters

This study aims to research the expression of spleen tyrosine kinase(Syk)in non-small cell lung cancer(NSCLC)and the relationship between Syk and clinico-pathologic factors and p53.Immunohistochemistry was applied to detect the expression of Syk and p53 protein in 39 cases of NSCLC(23 cases of lung squamous cell can-cer,16 cases of lung adenocarcinoma)and tumor-sur-rounding normal lung tissues.The positive rate of Syk was 46.15%(18/39)and 100%(39/39)in NSCLC and tumor-surrounding normal lung tissues,respectively.The expres-sion level of Syk in NSCLC was significantly lower than that in tumor-surrounding normal lung tissues(P=0.000).The Syk expression was positively correlated with the p53 expression in NSCLC specimens(P=0.025).There was no significant association between Syk expression and lymph node metastasis,differentiation degree,tumor size and tumor node metastasis(TNM).The present study demonstrated that Syk was aberrantly expressed in the NSCLC and might have a significant impact on tumor growth and progression.