Twist、E—cadherin及Vimentin在表达及意义宫颈鳞状上皮癌变的

目的探讨宫颈鳞状上皮癌变过程中Twist、E-cadherin、Vimentin的表达规律及临床意义。方法以慢性宫颈炎为对照,检测宫颈上皮内瘤变（CIN）及宫颈鳞状细胞癌组织标本中Twist（原位杂交）、E-cadherin、Vimentin（SABC免疫组化法）的表达情况,分析其相关性。结果（1）慢性宫颈炎、CINI、CINII、CINIU及宫颈癌组中：Twist的阳性率分别为10．O％、28．1％、29．6％、42．9％、64．3％,其中Twist在宫颈鳞癌的表达均明显高于其他组（P〈0．05）。E-cadherin、Vimentin的阳性率分别为80．O％、68．8％、55．6％、51．4％、39．3％和0、6．3％、7．4％、31．4％、32．1％,其中两者在宫颈鳞癌组、CINⅢ组中的表达与慢性宫颈炎组比较差异均有统计学意义（P〈0．05）,（2）分析全部CIN及宫颈癌病例,Twist的表达与E-cadherin呈负相关（r=-0．37,P〈0．01）,与Vimentin呈正相关（r：0．23,P〈0．05）。结论宫颈组织中Twist的异常表达与宫颈鳞状上皮癌变发生关系密切,Twist可能通过调控E-cadherin、Vimentin的表达参与宫颈鳞状细胞癌的发生。     

2010-2011年北京市儿童甲型H3N2流感病毒的血凝素基因特征和遗传进化分析

目的了解2010年9月1日～2011年8月31日北京市儿童甲型H3N2流感活动特点,并对病毒血凝素的基因和进化特征进行研究。方法采集哨点医院收集的1 040份儿童流感样病例样本和14份疫情样本,进行MDCK细胞分离病毒。选取26株甲型H3N2流感毒株进行血凝素(HA1)基因的扩增和序列测定。采用生物信息软件进行序列比对和进化分析。结果 2010-2011年流感监测季期间,总共分离64株甲型H3N2毒株,占分离毒株构成的65.31%。病毒HA1基因出现了Ⅰ、Ⅱ两个明显分支,均有S214I氨基酸变异。另外,分支I的毒株序列还均出现P162S、R261Q氨基酸变异;分支II的毒株序列均出现D53N、K62E、Y94H、K144N、T212A、I230V氨基酸变异,涉及A、C两个抗原决定簇,并新增1～2个糖基化位点。结论 2010年9月～2011年2月期间北京市儿童甲型H3N2流感活动活跃,并且其毒株呈现出两个明显不同的进化分支,其中一个分支毒株的血凝素基因特性发生了明显改变。     

催化光度法测定体液腺苷脱氨酶的活性

目的：改进了测定体液中腺苷脱氨酶活性的催化光度测定法。方法：利用Berthelot显色反应，通过测定单位时间内释放出来的NH，量来推算ADA的活性，并通过正交设计与单因素试验相结合优化测定条件，得到最佳测定方法。结果：批内和批间相对标准偏差范围分别为1．16％-2．17％，2．49％～3．25％。与文献方法对比，试剂用量减少一半，反应时间缩短40min。结论：本试验操作快速简便，灵敏度高，重复性好，用于测定。ADA活性较低的体液也能获得满意结果。可在临床推广应用。     

影响医院业务收入因素的灰色关联分析

本文对影响医院业务收入的固定资产总值、专业设备资金、每门诊人次收费等八项主要因素运用灰色系统的理论加以分析,主要目的是找出对业务收入影响强弱的因素,分析原因,提出建议,旨在为领导制定计划、安排人员、分配物资等方面提供可靠的信息和依据。     

液相分析仪紫外检测器标准物质的研制及不确定度评定

研制了液相分析仪紫外检测器检定用标准物质,简要介绍了标准物质的配制方法,重点介绍了标准物质的均匀性检验和稳定性检验,详细分析了标准物质不确定度的评定,对各级医疗机构药品检验具有重要的指导意义。     

分光光度法测定小儿氨酚黄那敏颗粒中胆红素的含量

目的:建立小儿氮酚黄耶敏颗粒中胆红素的含量测定方法.方法:采用紫外分光光度法,检测波长453 nm.结果:胆红素在0.672～6.720 μg/ml范围内具有良好线性关系(r=0.9999),平均回收率为99.10%,RSD=0.22%.结论:本法简便,准确.     

Impact of pathological response after preoperative transcatheter arterial chemoembolization (TACE) on incidences of microvascular invasion and early tumor recurrence in hepatocellular carcinoma: a multicenter propensity score matching analysis

BackgroundTo study the influence of pathological responses (PR) after transcatheter arterial chemoembolization (TACE) on incidences of microvascular invasion (MVI) and early recurrence in hepatocellular carcinoma (HCC) patients.MethodsBetween 2013 to 2015, consecutive HCC patients who underwent liver resection with “curative” intent at three hospitals were enrolled in this study. Patients with different areas of PR after preoperative TACE were compared with those without preoperative TACE on the incidences of MVI, early recurrence rates and patterns of recurrence before and after propensity score matching (PSM).ResultsOf 1,970 patients, 737 patients who received preoperative TACE were divided into three groups according to the areas of PR: ≥90% (n=226), 60–90% (n=447), and <60% (n=64). PR ≥90% was an independent protective factor of incidences of MVI [odds ratio (OR), 0.144; 95% confidence interval (CI), 0.082–0.245, P<0.001) and early recurrence (HR, 0.742; 95% CI, 0.561–0.963, P=0.032); while PR<60% was an independent risk factor of incidences of MVI (OR, 6.076; 95% CI, 3.004–11.728, P<0.001) and early recurrence (HR, 1.428; 95% CI, 1.095–1.929; P=0.009). Furthermore, patients with PR <60% were significantly more likely to develop multiple intrahepatic recurrences involving multiple hepatic segments when compared with patients without preoperative TACE.ConclusionsThis study indicated the area of PR after TACE was closely associated with the incidences of MVI and early tumor recurrence. Patients with PR <60% were at significantly higher risks of having more MVI, early and multiple tumor recurrences     

益气化痰消瘀法治疗颈动脉粥样硬化斑块疗效观察

目的:探讨益气化痰消瘀法治疗颈动脉粥样硬化斑块的临床效果.方法:选取本院收治的50例颈动脉粥样硬化斑块患者为研究对象,于分层基础上随机将患者平均分为两组.对照组采用常规西医治疗,观察组在对照组基础上行中医益气化痰消瘀法治疗.比较两组患者的治疗效果.结果:治疗后,两组疗效比较观察组优于对照组,差异有统计学意义(P<0.0...     

Comparative analysis of transient receptor potential channel 5 opposite strand-induced gene expression patterns and protein-protein interactions in triple-negative breast cancer

In patients with triple-negative breast cancer (TNBC), high tumour mutation burden and aberrant oncogene expression profiles are some of the causes of poor prognosis. Therefore, it is necessary to identify aberrantly expressed oncogenes, since they have the potential to serve as therapeutic targets. Transient receptor potential channel 5 opposite strand (TRPC5OS) has been previously shown to function as a novel tumour inducer. However, the underlying mechanism of TRPC5OS function in TNBC remain to be elucidated. Therefore, in the present study TRPC5OS expression was first measured in tissue samples of patients with TNBC and a panel of breast cancer cell lines (ZR-75-1, MDA-MB-453, SK-BR-3, JIMT-1, BT474 and HCC1937) by using qRT-PCR and Western blotting. Subsequently, the possible effects of TRPC5OS on MDA-MB-231 cells proliferation were determined using Cell Counting Kit-8 and 5-Ethynyl-2′-deoxyuridine assays after Lentiviral transfection of MDA-MB-231. In addition, potential interaction partners of TRPC5OS were explored using liquid chromatography-mass spectrometry (LC-MS)/MS. Gene expression patterns following TRPC5OS overexpression were also detected in MDA-MB-231 cells by using High-throughput sequencing. Gene Ontology (GO) and Kyoto Encyclopaedia of Genes and Genomes (KEGG) analysis were then used to systematically verify the potential interactions among the TRPC5OS-regulated genes. The potential relationship between TRPC5OS-interacting proteins and gene expression patterns were studied using Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) analysis. TRPC5OS expression was found to be significantly higher in TNBC tumour tissues and breast cancer cell lines compared with luminal tumour tissues and ZR-75-1. In addition, the overexpression of TRPC5OS significantly increased cell proliferation. High-throughput sequencing results revealed that 5,256 genes exhibited differential expression following TRPC5OS overexpression, including 3,269 upregulated genes and 1,987 downregulated genes. GO analysis results indicated that the functions of these differentially expressed genes were enriched in the categories of ‘cell division’ and ‘cell proliferation’ regulation. KEGG analysis showed that the TRPC5OS-regulated genes were associated with processes of ‘homologous recombination’ and ‘TNF signalling pathways’. Subsequently, 17 TRPC5OS-interacting proteins were found using LC-MS/MS and STRING analysis. The most important protein among interacting proteins was ENO1 which was associated with glycolysis and regulated proliferation of cancer. In summary, data from the present study suggest that TRPC5OS overexpression can increase TNBC cell proliferation and ENO1 may be a potential target protein mediated by TRPC5OS. Therefore, TRPC5OS may serve as a novel therapeutic target for TNBC.     

Box-behnken响应面法优化紫红生肌软膏的醇提工艺

目的 优选紫红生肌软膏的醇提工艺参数,为紫红生肌软膏的新药开发提供依据.方法 以栀子苷、连翘酯苷A、羟基红花黄色素A为评价指标,在单因素试验的基础上,以乙醇浓度、加醇量、提取时间为考察因素,采用Box-behnken响应面法设计试验,采用层次分析法-熵权法组合赋权确定各指标权重系数并计算综合评分,从而优化紫红生肌软膏醇...