不同气虚证小鼠甲状腺G蛋白通路及相关基因转录特征

目的:观察不同气虚证小鼠甲状腺G蛋白信号通路及功能激素基因表达的特征.方法:采用小鼠计量化四诊和辨证方法,以及GeneChip Mouse Exon 1.0 ST Array等技术,观察正常小鼠、肿瘤气虚证荷瘤小鼠甲状腺G蛋白信号通路及相关基因表达特征.结果:不同气虚小鼠垂体TSH与甲状腺TSH受体(TSHR)表达量均增加,但正常气虚证小鼠甲状腺G蛋白通路的腺苷酸环化酶(AC)和蛋白激酶A(PKA)未见相应的表达量增加;而肿瘤气虚证小鼠则相应增加、活跃,发生响应,Ras基因亦如是.结论:正常气虚小鼠甲状腺G蛋白通路中大多基因表达不活跃可能是其部分物质基础,而荷瘤小鼠气虚证系因实致虚,因此表现与正常气虚证不同,即甲状腺尚处于代偿状态.     

闭合复位经皮空心加压螺钉治疗股骨颈骨折32例临床分析

目的总结C臂x线监控下闭合复位空心加压螺钉内固定治疗中老年型股骨颈骨折的临床疗效分析。方法自2002年2月-2008年5月对32例闭合复位一空心加压螺钉内固定治疗中老年股骨颈骨折的临床资料进行回顾性分析。结果GardenⅠ型骨折5例,Ⅱ型16例,Ⅲ型11例。32例均获随访,随访时间1年一5年,所有病例骨折愈合良好;Ⅲ型骨折2例,股骨头坏死。患者髋关节功能恢复优良率84．4％。结论：闭合复位经皮空心加压螺钉内固定治疗股骨颈骨折具有创伤小,方法简便,手术时间短,对GardenⅠⅡⅢ型骨折治疗效果满意。     

Giganteaside D induces ROS-mediated apoptosis in human hepatocellular carcinoma cells through the MAPK pathway

Purpose

Every year, almost one million individuals are diagnosed with hepatocellular carcinoma (HCC) worldwide and more than 690,000 patients die of it. At present, most therapeutic anti-HCC agents are not effective, which is due to the appearance of chemo-resistance and/or toxic side effects. Therefore, it is imperative to find novel more effective anti-HCC agents. Here, we evaluated the effect of giganteaside D (GD), an oleanolic acid saponin from P. scabiosaefolia, on the growth and apoptosis of HCC cells.

Methods and results

Using MTT and clonogenic assays, we found that GD exhibited a significant growth inhibitory effect on the HCC-derived cell lines HepG2 and Bel-7402. In addition, we found that GD induced mitochondria-mediated apoptosis in these HCC-derived cells, as indicated by a decreased mitochondrial potential, activation of Caspase-9 and Caspase-3, cleavage of PARP and release of Cytochrome C from the mitochondria. Besides, we found that GD stimulated the generation of reactive oxygen species (ROS) and that blockage of ROS attenuated the GD-induced mitochondria-mediated apoptosis. Additionally, we found that GD treatment led to a decrease in phosphorylated Erk (p-Erk) and triggered the generation of p-JNK, both components of the mitogen-activated protein kinase (MAPK) signaling pathway. Inhibition of Erk or JNK by specific inhibitors or siRNAs augmented or attenuated the cytotoxic and apoptotic effects of GD.

Conclusions

From our results we conclude that GD can induce ROS-mediated apoptosis in HCC-derived cells through the MAPK pathway. This observation may open up avenues to explore the future use of GD as a HCC chemotherapeutic agent.

     

Detection and clinical significance of thrombomodulin in both plasma and tissue extracts of cancer patients

Thrombomodulin?is the endothelial cell surface glycoprotein that converts thrombin from a procoagulant protein into the activator for protein C. Thrombin plays an important role in the adhesion of cancer cells to endothelial cells through fibrin formation and platelet activation, and thrombin stimulates tumor cell bindings to endothelial cells[1]. In this article, the changes of TM were studied in both plasma and tissue extracts of cancer patients for evaluating its clinical significance. P…     

贲门癌术前大剂量放疗与单纯手术的比较(附60例报告)

我院胸外科在1987年3月至1989年3月随机性对Ⅲ期贲门癌30例行术前10MeVX线的直线加速器、10cm×10cm的前后两野快速、大剂量（25Gy／5次／5天）对穿照射，共和30例单纯手术的结果进行比较。组织学的有效率64％。放疗组肿瘤切除率为83．3％（25／30），单纯手术组为80％（24／30）。5年生存率放疗组30％（9／30），单纯手术组23.3％（7／30）。两组比较无显著性差异（p＞0．05）。术后并发症前者未增加。     

重组人肿瘤坏死因子β(HuTNFβ)的纯化及抗肿瘤效应的初步研究

本文利用能表达HuTNFβ的工程菌株(P20KLT)按常规培养及扩增．即采用LB培养液(内含Amp100．μg／ml Tet 5μg／ml)；1：40扩增．当A550达0．1时，加入IAA(20μg／ml)，当A550为1．0时，中止培养，离心(5000rpm，4℃)收集菌体。在菌体中按1：5加入缓冲液，冰浴中超声破碎，13，000rpm高速离心20分钟，     

Targeting an RNA-Binding Protein Network in Acute Myeloid Leukemia

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TLR3和TLR4基因多态性与EBV相关胃癌易感性的关系

目的 探讨TLR3c.1377和TLR4Asp299Gly基因多态性与EBV感染在EBV相关胃癌（EBVassociated gastric carcinoma, EBVaGC）发生中的相关性。方法 选用41例EBVaGC组织、62例EBV阴性胃癌（EBV-negative gastric carcinoma, EBVnGC）组织以及64例健康人群血标本作为研究对象,采用PCR结合限制性长度多态性分析（reaction-restriction fragment length polymorphism, RFLP)技术检测TLR3c.1377 和TLR4 Asp299Gly基因多态性,并对实验结果进行统计分析。结果 （1）胃癌组与对照组比较TLR3c.1377基因型频率差异有统计学意义（P=0.025）,胃癌组T等位基因频率明显高于对照组（45.6% vs. 29.7%,P=0.004),T等位基因携带者的患病风险明显高于非携带者(OR=2.435,P=0.008）;（2）EBVaGC、EBVnGC以及对照组间TLR3c.1377基因型、等位基因频率差异无统计学意义（P>0.05）。（3）EBVaGC组,EBVnGC组以及正常对照组所有个体TLR4 Asp299Gly基因型均为Asp/Asp纯合子（P>0.05）。结论 TLR3c.1377基因多态性与胃癌易感性有关,T等位基因为胃癌的危险因子,而C等位基因为一保护基因;TLR3c.1377基因多态性与EBVaGC易感性无明显相关。     

基于DWI-ADC值动态监测宫颈癌放化疗疗效的临床研究

目的:通过DWI-ADC值测定动态监测宫颈癌放化疗疗效。方法:对2014年4月至2016年9月我院病理确诊的37例中晚期（FIGO分期Ⅱb-Ⅲb）宫颈鳞癌患者分别于同步放化疗前（A节点）、外照射治疗结束时（B节点）、后装内照射治疗3次时（C节点）、同步放化疗治疗结束时（D节点)行4次常规MRI及DWI检查。在ADC图上绘制ROI测量病灶、正常子宫肌层的ADC值;计算不同时间节点病灶的体积。所有数据经过统计学处理。结果:A、B、C、D时间节点病灶ADC值组间比较有明显差异(P<0.01),从A→D节点病灶ADC值逐步上升,其中ADC值上升最明显的为B节点,增幅32.55%;病灶体积缩小最明显为B-C节点,缩小率为65.64%。D节点病灶与A节点正常子宫肌层的ADC值比较无统计学差异。结论:基于ADC值测定能够更早、更精确、定量地动态评估中晚期宫颈鳞癌同步放化疗效果,并对预后疗效给予准确预测。     

胞苷脱氨酶基因对小鼠大剂量化疗的保护作用

Objective:To explore the feasibility of transfecting cytidine deaminase(CD)gene into mouse bone marrow cells in order to observe the drug resistance of high dose Ara-C and improve the tolerance of myelosuppression following combination chemotherapy.Methods:Human cytidine deaminase gene was transfected into mice bone marrow cells by retroviral vector.Resistant colony-forming unit granulocyte-macrophage(CFU-GM)assay was performed after the transfected mice bone marrow cells treated by the Ara-C.DNA was extracted from mice bone marrow cells.The drug resistant gene in mice bone marrow cells after transfection was detected by PCR.Results:Bone marrow cells of lhe donor mice cultured with lhe retroviral producer cells showed the drug resistant colonies and resistance to Ara-C,so did accept mice transplanted with the CD gene(CFU-GM of donor mice was 52%,X2=124.62,P＜0.01:accept mice was 54%,X2=126.26.P＜0.01,both compared with the contrast group).The animal survival rate was significantly higher in gene transfected group than that of the control(X2=7.42.P＜0.01).CD gene of transfected bone marrow cells was confirmed by PCR.Conclusion:CD gene can be transfected into bone marrow cells of mice efficiently and increase the drug resistance to Ara-C.