Study of apolipoprotein E genetic polymorphism in patients with atherosclerotic cerebral infarction

INTRODUCTIONAtheroscleroticCerebralInfarction (ACI)isoneofthemostcommoncerebralvasculardis easse.Itspathogenesishasnotyetbeencom pletelyexpounded ,althoughmoreandmorestudiesshowingthatgeneticfactorsmayplayanimportantrole ,especiallygeneticmutations.Lo cat…     

脑梗塞患者血中一氧化氮对血小板功能的影响

[目的]研究脑梗塞患者血中一氧化氮(NO)的含量与血小板功能之间的关系.[方法]将20例脑梗塞患者分别于发病急性期和稳定期采用硝酸还原酶法测血中NO含量;用光电比浊法和免疫荧光分析法分别测定血小板聚集率(PAgT)和血小板α-颗粒膜蛋白(GMP-140)水平;同时检测正常对照15例[结果]血清中NO含量在发病急性期较正常对照明显增高(P<0.01).同时,PAgT与正常对照有显著性差异(PADP<0.05,PADR<0.01);而血小板GMP-140在急性期和稳定期较正常对照均有显著性差异(P<0.01).[结论]脑梗塞发病急性期随着血中NO含量的增高,导致PAgT受抑,血小板GMP-140水平减低.     

小剂量尿激酶加法安明在脑梗塞早期的应用

目的 :研究小剂量尿激酶和法安明在脑梗塞早期应用的临床疗效。方法 :将 10 8例脑梗塞患者分为三组 ,分别采用小剂量尿激酶治疗 (简称尿激酶组 ) ;小剂量尿激酶加法安明治疗 (简称联合组 ) ;传统疗法 (简称对照组 )。治疗前后采用欧洲卒中评分法进行神经功能评分。结果 :治疗前各组分数无显著性差异 ,治疗后联合组 >尿激酶组 >对照组 ,差异均有显著性。联合组的卒中继续进展及再梗塞发生率明显降低。结论 :小剂量尿激酶与法安明联用能有效阻止血栓进展 ,减少再梗塞 ,有利于神经功能恢复 ,疗效显著而无明显副作用。     

Use of stochastic simulations to investigate the power and design of a whole genome association study using single nucleotide polymorphism arrays in farm animals

This paper presents a quick, easy to implement and versatile way of using stochastic simulations to investigate the power and design of using single nucleotide polymorphism (SNP) arrays for genome-wide association studies in farm animals. It illustrates the methodology by discussing a small example where 6 experimental designs are considered to analyse the same resource consisting of 6006 animals with pedigree and phenotypic records: (1) genotyping the 30 most widely used sires in the population and all of their progeny (515 animals in total), (2) genotyping the 100 most widely used sires in the population and all of their progeny (1102 animals in total), genotyping respectively (3) 515 and (4) 1102 animals selected randomly or genotyping respectively (5) 515 and (6) 1102 animals from the tails of the phenotypic distribution. Given the resource at hand, designs where the extreme animals are genotyped perform the best, followed by designs selecting animals at random. Designs where sires and their progeny are genotyped perform the worst, as even genotyping the 100 most widely used sires and their progeny is not as powerful of genotyping 515 extreme animals.     

Methylenetetrahydrofolate reductase C677T polymorphism predicts response and time to progression to gemcitabine-based chemotherapy for advanced non-small cell lung cancer in a Chinese Han population

Objective:The aim of this study was to evaluate the association between the methylenetetrahydrofolate reductase(MTHFR) C677T excision repair cross-complementation group 1(ERCC1) genetic polymorphisms and the clinical efficacy of gemcitabine-based chemotherapy in advanced non-small cell lung cancer(NSCLC).Methods:A total of 135 chemonaive patients with unresectable advanced NSCLC were treated with gemcitabine/platinum regimens.The polymorphisms of MTHFR C677T,ERCC1 C8092A,and ERCC1 C118T were genotyped using the TaqMan methods.Results:The overall response rate was 28.9%.Patients with MTHFR CC genotype had a higher rate of objective response than patients with variant genotype(TT or CT)(41.2% versus 19.1%,P=0.01).Median time to progression(TTP) of patients with MTHFR CC genotype was longer than that of patients with variant genotype(7.6 months versus 5.0 months,P=0.003).No significant associations were obtained between ERCC1 C118T and C8092A polymorphisms and both response and survival.Conclusions:Our data suggest the value of MTHFR C677T polymorphism as a possible predictive marker of response and TTP in advanced NSCLC patients treated with gemcitabine/platinum.     

急性脑梗塞患者粘附分子CD_(18)、CD_(54)表达的研究

[目的]探讨粘附分子CD18、CD54粘附功能及其表达变化与急性脑梗塞(ACI)关系.[方法]用流式细胞术检测88例ACI患者白细胞粘附分子CD18、CD54含量与脑梗塞发生时程、部位、面积及治疗前后表达。并与30例正常人作对照.[结果]ACI患者CD18、CD54表达明显增高,与正常对照组比较差异显著(P<0.05),与梗塞面积、部位关系不大;ACI患者CD18、CD54表达在7d内均可有较高水平的表达,治疗10d后表达降低,治疗前后比较CD18、CD54差异有意义(P<0.05).[结论]CD18、CD54参与脑梗塞发生发展病理过程.可做为诊断脑梗塞、评估预后的一项辅助指标.     

急性ST段抬高型心肌梗死继发心脏破裂的预测因素分析

研究目的：心脏破裂是急性ST段抬高型心肌梗死最严重的并发症之一,病情凶险,死亡率高。通过明确心肌梗死后出现心脏破裂并发症的危险因素,早期识别心脏破裂高危人群,有利于在急性心肌梗死的早期采取干预措施以减少心脏破裂的发生。创新要点：既往缺乏对中国sT段抬高型心肌梗死继发心脏破裂的系统风险评估,本研究采用回顾性队列研究的方法,完善并健全中国多中心的急性心肌梗死数据库,样本总量达到9798例,为国内同类研究中样本量最多。既往的国外文献报道：女性、高龄、心梗后就诊时间延迟、前壁心肌梗死、溶栓治疗等是心肌梗死后心脏破裂的独立危险因素。本研究在中国人群验证以上危险因素的基础上首次提出就诊时血色素下降及白细胞计数的升高与随后发生的心脏破裂密切相关。新的心脏破裂预测因素的发现有利于对心脏破裂更精细化的危险分层,早期识别心脏破裂高危人群。研究方法：建立中国多中心心肌梗死数据库,比较发生心脏破裂与未发生心脏破裂患者临床特点的差异,筛选敏感特异的心脏破裂的独立预测因素。重要结论：中国人群急性ST段抬高型心肌梗死后心脏破裂的发生率是1．82％,独立预测因素主要包括：高龄、女性、就诊时静息心率增快、前壁心肌梗死、心功能不全、就诊时间延迟、肾功能不全、贫血与白细胞计数升高。本文第一次提出就诊时贫血状态及白细胞计数的升高时与心脏破裂的发生直接相关。     

低分子肝素加丹参注射液治疗急性脑梗塞的疗效观察

目的观察低分子肝素(速避凝)加丹参注射液治疗急性梗塞的疗效.方法对60例起病在48h内的急性脑梗塞患者随机分为治疗组和对照组给予低分子肝素加丹参及普通治疗.结果治疗组较对照组治愈率(P＜0.05)明显提高.结论本疗法疗效理想,应用方便,副反应轻而小,值得临床推广.     

Study of Resistin gene expression in peripheral blood mononuclear cell and its gene polymorphism in a small range population

INTRODUCTION Recently discovered as an endocrine organ, adi-pose tissue can secrete many cytokines such as Re-sistin, adiponectin and free fatty acids, and receives much attention in the study of insulin resistance and type 2 diabetes mellitus (T2DM). As a peptide hor-mone secreted by adipocyte, Resistin is considered to be the linkage between obesity and insulin resistance (Steppan et al., 2001). Most studies on Resistin in-vestigate adipose tissue. In this experiment we de-tected t…     

A meta-analysis of randomized trials on clinical outcomes of paclitaxel-eluting stents versus bare-metal stents in ST-segment elevation myocardial infarction patients

A meta-analysis was performed to address the efficacy and safety of paclitaxel-eluting stent (PES) in ST-segment elevation myocardial infarction (STEMI) patients. A systematic literature search was conducted to identify all randomized clinical trials in mortality, recurrent myocardial infarction (rMI), repeat revascularization (RR), and stent thrombosis (ST). A total of 4190 STEMI patients were enrolled in six randomized trials comparing PES with bare-metal stent (BMS). The pooled repeat revascularization rate was 5.7% in PES group, significantly lower than 10.0% in BMS group with an odds ratio (OR) of 0.56, 95% confidence interval (CI) [0.44, 0.72] (P<0.00001). No significant difference was found between PES and BMS groups in mortality at one year after the indexing procedure (3.9% vs. 5.1%, OR 0.88, 95% CI [0.63, 1.21], P=0.42). Similarly, rMI rate did not differ significantly between the two groups (3.4% vs. 4.1%, OR 0.80, 95% CI [0.56, 1.13], P=0.21). PES was also associated with the comparable pooled rate of definite stent thrombosis with BMS (2.3% vs. 2.4%, OR 0.81, 95% CI [0.52, 1.26], P=0.35). The results show that PES improved clinical outcomes in STEMI patients with a decreased need for repeat revascularization and no concerns for safety.     

Effect of enalapril on plasma homocysteine levels in patients with essential hypertension

Objective:To investigate the effect of enalapril on plasma homocysteine(Hcy) levels and the association of methylenetetrahydrofolate reductase(MTHFR) C677T polymorphism with the changes of Hcy levels in response to enalapril among patients with essential hypertension.Methods:A total of 130 patients with mild-to-moderate essential hypertension were enrolled and enalapril was orally administered at a dose of 10 mg/d for eight weeks.Plasma Hcy levels were measured by denaturing high-performance liquid chromatography(DHPLC) at baseline and after eight weeks of treatment.Genotyping of MTHFR C677T polymorphism was performed by TaqMan probe technique.Results:Compared with baseline,plasma Hcy levels did not change significantly after eight weeks(P=0.81).Stratified by baseline Hcy levels,a significant increase in plasma Hcy levels(P=0.02) among those with Hcy 10 μmol/L was observed,in contrast to no significant changes in plasma Hcy levels(P=0.54) among those with Hcy ≥10 μmol/L.No significant association was observed between MTHFR C677T polymorphism and changes in Hcy levels in response to enalapril.Conclusions:Enalapril may cause an increase in plasma Hcy levels among the hypertensives with low baseline Hcy levels.There was no significant association between MTHFR C677T genotypes and changes in Hcy levels in response to enalapril among subjects with essential hypertension.     

Association of CASP9, CASP10 gene polymorphisms and tea drinking with colorectal cancer risk in the Han Chinese population

The initiators caspase-9(CASP9) and caspase-10(CASP10) are two key controllers of apoptosis and play important roles in carcinogenesis.This study aims to explore the association between CASPs gene polymorphisms and colorectal cancer(CRC) susceptibility in a population-based study.A two-stage designed population-based case-control study was carried out,including a testing set with 300 cases and 296 controls and a validation set with 206 cases and 845 controls.A total of eight tag selected single nucleotide polymorphisms(SNPs) in CASP9 and CASP10 were chosen based on HapMap and the National Center of Biotechnology Information(NCBI) datasets and genotyped by restriction fragment length polymorphism(RFLP) assay.Multivariate logistic regression models were applied to evaluate the association of SNPs with CRC risk.In the first stage,from eight tag SNPs,three polymorphisms rs4646077(odds ratio(OR) AA+AG:0.654,95% confidence interval(CI):0.406-1.055;P=0.082),rs4233532(OR CC:1.667,95% CI:0.967-2.876;OR CT:1.435,95% CI:0.998-2.063;P=0.077),and rs2881930(OR CC:0.263,95% CI:0.095-0.728,P=0.036) showed possible association with CRC risk.However,none of the three SNPs,rs4646077(OR AA+AG:1.233,95% CI:0.903-1.683),rs4233532(OR CC:0.892,95% CI:0.640-1.243;OR CT:1.134,95% CI:0.897-1.433),and rs2881930(OR CC:1.096,95% CI:0.620-1.938;OR CT:1.009,95% CI:0.801-1.271),remained significant with CRC risk in the validation set,even after stratification for different tumor locations(colon or rectum).In addition,never tea drinking was associated with a significantly increased risk of CRC in testing set together with validation set(OR:1.755,95% CI:1.319-2.334).Our results found that polymorphisms of CASP9 and CASP10 genes may not contribute to CRC risk in Chinese population and thereby the large-scale case-control studies might be in consideration.In addition,tea drinking was a protective factor for CRC.     

血细胞形态学检查诊断深部真菌感染探讨

目的:探讨血细胞形态学变化对深部真菌感染的诊断价值;方法:常规方法对深部真菌感染患者的外周血和骨髓进行血细胞形态学检查;结果:发现粒细胞系统反应性增生,并有较特异的形态学改变。主要为中性粒细胞的颗粒增多和空泡变性;结论:血细胞形态学变化对深部真菌感染具有提示性诊断价值。结合患者的临床资料,可对深部真菌感染作出初步诊断。     

Study on the serum levels of soluble intercellular adhesion molecule-1 (sICAM-1) in patients with Helicobacter pylori Infection

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