青皮注射液对阵发性室上性心动过速即刻转律作用的序贯检验研究

本文报告了应用青皮注射液对阵发性室上性心动过速进行即刻转律治疗,并作开放型单相序贯检验研究,证明青皮注射液对其即刻转律作用有显著性效果。     

桂皮醛对发热大鼠下丘脑蛋白质组双向凝胶电泳分析

目的：观察桂皮醛对酵母致热大鼠的解热作用及其时下丘脑蛋白质组的影响。方法：采用双向凝胶电泳技术和计算机辅助图像分析方法，对蛋白质进行分离，以模型组作为参考胶进行匹配。结果：口服给予桂皮醛后时发热大鼠有解热作用，双向电泳图像分析显示桂皮醛组与模型组匹配率为86％，多个蛋白质点表达量有不同程度的改变。结论：桂皮醛时酵母致热大鼠有解热作用，其差异表达的蛋白质点可能参与了解热过程。     

糖尿病肾病中医药诊治进展

糖尿病肾病是糖尿病患者的主要微血管病变之一,亦是导致终末期肾脏病的重要原因之一。中医药诊治糖尿病肾病有多种理论学说,从不同角度阐释了糖尿病肾病的病机,其中大部分医家认为气阴两虚,肾络瘀阻为主要病因病机。文章将糖尿病肾病中医药诊治进展进行了总结。     

3D打印非共面模版引导125I粒子植入治疗头颈部肿瘤个体化设计与应用

目的 对比3D打印非共面模板引导¹²⁵I粒子植入治疗头颈部肿瘤的术前、术后计划的物理剂量学参数,探索头颈部肿瘤放射性粒子植入治疗用个体化模板设计方法的安全性、可行性、精确性。方法 2016年1月-2016年12月于北京大学第三医院接受3D打印模板辅助CT引导放射性¹²⁵I粒子植入的头颈部复发/转移恶性肿瘤的患者42例。处方剂量110~160Gy,设计制作3D打印非共面模板42块,对比术前、术后物理剂量学参数,包括D90、最小周边剂量(mPD)、V100、V150、V200、适形指数(CI)、靶区外体积指数(EI)、均匀性指数(HI)。结果 为42例患者设计、制作的42块导板术中就位良好,与术前计划相比,术后D90、V100、CI、EI、HI均相近(P=0.490、0.407、0.893、0.143、0.079),mPD、V150、V200不同(P=0.036、0.007、0.000)。结论 术后验证的主要剂量学指标较好地达到了术前计划要求,有良好的治疗精确性,可以满足临床需求。     

RNAi沉默肺腺癌A549细胞系PD-L1基因表达对其增殖和凋亡的影响

目的:沉默肺癌细胞系A549的程序性死亡配体1(programmed death ligand 1,PD-L1)基因,观察其对A549细胞增殖和凋亡的影响。方法:构建PD-L1 shRNA重组质粒p GPU6/PD-L1,并应用脂质体转染法将其转染入A549细胞。RT-PCR法检测PD-L1基因的表达;Western blotting法检测PD-L1蛋白的表达;MTT法检测p GPU6/PD-L1对A549细胞增殖的影响;AnnexinⅤ-FITC/PI双染法检测p GPU6/PD-L1对A549细胞凋亡的影响。结果:成功将p GPU6/PD-L1转染入A549细胞;RT-PCR结果显示p GPU6/PD-L1使A549细胞PD-L1基因表达水平降低;Western blotting结果显示p GPU6/PD-L1转染A549细胞使PDL1蛋白表达减少;MTT结果显示p GPU6/PD-L1能够抑制A549细胞增殖;AnnexinⅤ-FITC/PI双染法检测结果显示p GPU6/PD-L1能够诱导A549细胞凋亡。结论:p GPU6/PD-L1能够下调肺癌细胞A549 PD-L1的表达,抑制细胞增殖,并诱导细胞凋亡。     

Modulatory effects of adiponectin on the polarization of tumor‐associated macrophages

The plasticity of macrophages with selective functional phenotypes partially arises in respective to their microenvironment. Tumor‐associated macrophages (TAMs) may promote disease progression with tumor specific manner. Here we report that in pediatric malignant soft‐tissue tumors, the presence of TAMs and expression of adiponectin (APN) are heterogeneous. Both APN and TAMs had high expression in rhabdomyosarcoma, especially in the malignant subtype, alveolar rhabdomyosarcoma. To investigate the mode of action of APN on TAM activation, a murine MN/MCA1 sarcoma model was used. The Results revealed that exogenous APN had no effect on MN/MCA1 proliferation but tumor size was markedly reduced in apn^?/? mice versus WT controls. The accumulation of TAMs in apn^?/? mice was also reduced which correlated to downregulated serum levels of MCP‐1. Likewise, TAMs in apn^?/? mice exhibited a M1‐like phenotype, characterized by increase in MHC II^high population and M1 phenotypic markers, such as iNOS gene and serum TNF‐α accompanied by a decrease in M2 markers, namely YM1 gene and serum IL‐10. In addition, APN deficiency increased the number of CD4⁺ T cells, CD8⁺ T cells and NK cells in tumors and reduced tumor metastasis. The altered phenotype of TAMs in apn^?/? mice was associated with a marked decrease in phospho‐p38 and treatment with a p38 MAPK inhibitor significantly reduced tumor size and increased MHC II expression on TAMs in WT mice, implying p38 MAPK signaling pathway may contribute to APN‐mediated TAM polarization. Collectively, our findings suggest that APN may have a potential role in regulating soft tissue sarcoma growth.     

紫外线诱导体外培养的LOVO、HT-29细胞的凋亡

目的研究紫外线照射体外培养的大肠癌ＬＯＶＯ和ＨＴ┐２９细胞后，诱导这两株大肠癌细胞系发生凋亡的作用。方法紫外线照射两株大肠癌细胞系后２４～３６ｈ，通过琼脂糖凝胶电泳、ＨＥ染色和流式细胞仪检测两株细胞发生凋亡的情况。结果两株大肠癌细胞在形态学上出现典型的细胞核固缩、碎裂，琼脂糖凝胶电泳显现特征性的“梯状”带，流式细胞仪分别在２４和３６ｈ出现亚二倍体峰。结论紫外线具有杀灭癌细胞的作用，其机制与诱导细胞凋亡有关；其方法简单、易行，可作为研究细胞凋亡的较好的体外模型。     

Frequent hypermethylation of RASSF1A and TSLC1, and high viral load of Epstein-Barr Virus DNA in nasopharyngeal carcinoma and matched tumor-adjacent tissues

We examined the promoter hypermethylation of tumor-suppressor genes RASSF1A and TSLC1, quantitated EBV DNA load in nasopharyngeal carcinoma (NPC) tissues (T tissues), and matched tumor-adjacent tissues outside 0.5 cm (P tissues) and outside 1.0 cm (Z tissues) to evaluate the role of promoter hypermethylation of RASSF1A and TSLC1 as well as viral load in the pathogenesis of NPC. Methylation-specific polymerase chain reaction (PCR) for RASSF1A and TSLC1 and quantitative real-time PCR analysis of EBV DNA were performed on matched T, P, and Z tissues (n = 28) as well as chronic nasopharyngitis tissues (n = 8). Hypermethylated RASSF1A was frequently detected in the T (82%) and P tissues (75%), but less frequently in Z tissues (46%). he average quantities of EBV DNA (copies/microg DNA) in matched T, P, and Z tissues were 673,000, 90,000, and 7000. The differences of promoter hypermethylation of RASSF1A and EBV viral load among T, P, and Z tissues were statistically significant, with more frequent methylation and higher viral load detected when tissues examined were nearer to the NPC tissues. Our results suggest that aberrant hypermethylation of RASSF1A and high EBV load might be important events in NPC pathogenesis, and they may be useful molecular diagnostic markers for this cancer.     

NEDD9在食管鳞状细胞癌中表达的意义

目的:探讨NEDD9在食管鳞癌中表达的意义及与肿瘤发生发展和转移的关系。方法:采用免疫组化方法及Real-time PCR技术检测NEDD9在40例食管鳞癌癌组织、癌旁正常组织中的表达情况,并分析NEDD9的表达与肿瘤临床病理特征之间的关系。结果:食管癌组织与癌旁正常组织中NEDD9蛋白阳性表达率分别为77.5%、25.0%,mRNA表达CT值分别为1.704±0.360、0.843±0.526,食管癌组织中NEDD9蛋白及mRNA水平均明显高于癌旁组织及正常食管组织。NEDD9的表达与患者年龄、性别无关(P>0.05),与肿瘤组织分化程度、TNM分期及有无淋巴结转移有关(P<0.05)。结论:NEDD9在食管癌组织中表达明显高于正常癌旁食管组织,可能促进食管癌的侵袭及转移,可作为食管癌治疗的潜在靶点。