共查询到20条相似文献,搜索用时 47 毫秒
1.
2.
3.
生物芯片技术在食品检测中的应用 总被引:12,自引:1,他引:12
生物芯片检测技术是一种全新的微量分析技术。生物芯片基本技术包括方阵构建、样品制备、化学反应和结果检测 ;生物芯片技术在食品微生物领域、食品毒理学、营养学、转基因产品检测中均有应用 相似文献
4.
生物芯片技术的应用与展望 总被引:1,自引:0,他引:1
生物芯片技术是20世纪90年代中期发展起来的一项尖端技术,已经成为生命科学界的研究热点之一。本文阐述了生物芯片的基本概念,简述了其制备过程、主要分类及其在分子生物学、食品科学和医学研究中的应用,并对其发展前景作了预测及展望。 相似文献
5.
生物芯片技术在药物研究中的应用前景 总被引:3,自引:0,他引:3
1991年 ,美国Stephenfodor等提出了DNA芯片的概念[1] ,随着人类基因组计划 (HumanGenomeProject,HGP)的实施 ,生物芯片技术已成为基因组计划中的一种重要技术手段。生物芯片 (biologicalchip或biochip) ,把生化分析系统中的样品制备、生化反应和结果检测三个部分有机地结合起来连续完成。与传统的检测方法相比 ,具有高通量、高信息量、快速、微型化、自动化、成本低、污染少、用途广等特点[2 ] 。生物芯片包括基因芯片、蛋白质芯片或肽芯片、细胞芯片、组织芯片、元件型的微阵列… 相似文献
6.
7.
生物芯片技术是20世纪后期发展起来的新技术,在生命科学的各个领域逐渐得到广泛应用。本文就该技术在微生物学领域,特别是在病原微生物检验、病原微生物的基因组和基因变异性及基因多态性分析、病原微生物的致病机制、病原微生物感染后宿主机体基因表达的变化等方面的应用进行总结。 相似文献
8.
生物芯片技术及其在基础生物科学研究中的应用 总被引:1,自引:0,他引:1
回顾了生物芯片的发展历史,重点介绍了生物芯片技术的两大技术基础:分子生物技术和微细加工生物技术;阐述了生物芯片技术的核心内容,总结了生物芯片的三大类型,并对生物芯片技术在生命科学基础研究中的应用进行了深入探讨和展望。 相似文献
9.
10.
11.
12.
基因枪在大鼠闭塞性血管病基因治疗中的应用 总被引:1,自引:0,他引:1
探讨利用基因枪技术转移肝细胞生长因子基因治疗大鼠肢体闭塞性血管病的可行性,构建了携带人肝细胞生长因子(HGF)基因的重组真核表达载体(pUDKH),在制备好大鼠下肢闭塞性血管病模型后,通过基因枪或肌肉直接注射法,向局部缺血部位肌肉中转移pUDKH,每只5ug(基因枪)和12ug(肌肉注射),应用常规组织病理切片(H.E.染色)及免疫组织化学方法观察血管形成及基因表达,转移pUDKH后第10天,用基因枪和直接注射法转移的局部肌肉组织的HGF的表达明显高于转移空白质粒(pUDK)的对照组,pUDKH组可见明显的小血管新生,而pUKD组至20天时仍未观察到或仅见到极少量的新生血管,基因枪与肌肉注射两组相比血管密度无明显差异,采用基因枪直接转移pUDKH裸露质粒子肢体缺血局部的方法是可行的,转移的基因可在局部有效表达,达到促进血管形成的预期目的。 相似文献
13.
目的:构建带有组织特异性FLT-1启动子的真核表达载体,检测其在转染的人脐静脉内皮细胞(HUVEC)中对荧光素酶报告基因表达的驱动能力。方法:采用PCR扩增FLT-1启动子,插入到pGL3-Basic-luc载体中,构建携带FLT-1启动子的真核表达载体pGL3-FLT-Basic-luc,经脂质体法转染HUVEC、HepG2、NIH3T3和HEK293细胞,于转染48h后采用双荧光报告系统检测荧光素酶表达活性。 结果:酶切及测序证实构建的pGL3-FLT-Basic-luc载体中含有序列正确的FLT-1基因启动子,双荧光报告系统检测显示,转染的HUVEC细胞其荧光素酶活性明显高于HEK293细胞(P<0.01),而转染的HepG2和NIH3T3细胞中未检测出荧光素酶表达。结论:克隆的FLT-1启动子具有较高的血管内皮特异性转录活性,可作为血管疾病靶向基因治疗的启动子来源。图 相似文献
14.
Substantial Linkage Disequilibrium Across the Dihydrolipoyl Succinyltransferase Gene Region Without Alzheimer's Disease Association 总被引:1,自引:0,他引:1
Association of the candidate gene DLST with late-onset Alzheimer's disease (LOAD) risk has been suggested on the basis of case-control studies. This gene, located on chromosome 14q24.3, encodes a subunit of a mitochondrial component known to be defective in AD, the alpha-ketoglutarate dehydrogenase complex. Positive reports have correlated different DLST alleles with LOAD, whereas other groups have failed to find any significant association. We therefore reexamined the association of DLST and LOAD in a more ethnically homogeneous series using three additional single nucleotide polymorphisms (SNP) located within or closely flanking either end of the DLST gene. Pairwise analysis of these SNPs indicated there was strong linkage disequilibrium across the DLST locus. Analysis of complex genotypes or haplotypes based upon all five SNP loci failed to identify a LOAD risk allele, suggesting that further studies of DLST in relation to AD are not warranted. 相似文献
15.
We investigated the relationships among the +1444C/T polymorphism in the C-reactive protein (CRP) gene and the concentration
of CRP and the risk of coronary heart disease. Using polymerase chain reaction-restriction fragment length polymorphism, we
analyzed the frequency distribution of genotypes and alleles of the +1444C/T polymorphism in samples from 128 patients with
coronary heart disease (coronary stenosis more than 50%) and 119 unrelated normal individuals. The plasma levels of CRP and
lipids in the subjects were also measured. The frequencies of the genotypes were CC 89.1%, CT 10.9%, and TT 0% in patients
and CC 89.9%, CT 10.1%, and TT 0% in controls. The frequency of allele C was 94.5% in patients and 95.0% in controls, and
allele T was 5.5% in patients and 5.1% in controls. The distribution of genotypes and alleles in the Chinese Han population
was significantly different from that of the Caucasian population. There were no significant differences between frequencies
of genotype and allele of controls and those of patients (P>0.05), but in controls the concentrations of CRP in the CC genotype subgroup were significantly higher than those in the
CT genotype subgroup (P<0.05). This suggests that the +1444C/T variant in the CRP gene influences the basal CRP level in normal people. These findings
imply that there may eventually be a need to establish genotype-specific risk thresholds of the CRP level. 相似文献
16.
目的 探讨肿瘤坏死因子α(TNF-α)基因启动子区-238G/A和-308G/A多态与皖南地区汉族人Graves病(GD)发生的关系.方法 采用Taqman探针等位基因鉴别技术,检测和分析432例Graves病患者和629例正常对照者的TNF-α基因-238G/A和-308G/A多态位点的基因型和等位基因的频率.结果 TNF-α-238G/A和-308G/A多态基因型和等位基因频率在病例组和对照组的分布均无统计学差异(P>0.05),根据基因型分组进行临床病理特征比较亦未发现相关性.结论 TNF-α-238G/A和-308G/A多态与皖南地区汉族人GD发病无相关性. 相似文献
17.
18.
阿尔茨海默病(Alzheimer’s disease,AD)是痴呆最常见的类型,以记忆减退、认知障碍和行为异常为主要临床表现,可能与遗传和环境因素有关。研究认为β淀粉样蛋白肽(amyloid beta,Aβ)的蓄积是AD发病的中心环节。脑啡肽(Neprilysin,NEP)作为脑内Aβ的主要降解酶,是AD研究的热点。现阶段关于NEP基因多态性和AD发病的关联研究颇多,但尚未证实两者间的关系,存在许多不一致的结论。该文利用文献检索系统,对NEP基因多态性与AD临床相关性的文献进行检索分析,了解目前研究现状,分析可能造成的原因,探索进一步的研究方案。 相似文献
19.
胆固醇酯转运蛋白基因多态性与冠心病关系的研究进展 总被引:1,自引:0,他引:1
胆固醇酯转运蛋白(CETP)是杀菌蛋白基因家族的重要成员,其主要功能是介导血浆中的胆固醇酯逆向从外周组织转运至肝脏中。目前,CETP基因被广泛认为是冠状动脉疾病(CHD)易感基因之一,CETP基因位点的遗传差异表明其与高密度脂蛋白浓度的变化有关,而高密度脂蛋白的浓度高低与冠心病的形成有很大的关系。因此,CETP的功能、遗传差异及与冠心病的关系是当前心血管疾病研究中的一个热点。本文较全面地阐述了CETP的生物学特性、功能以及CETP基因多态性与冠心病的关系。 相似文献
20.
《Journal of receptor and signal transduction research》2013,33(1):54-57
AbstractAssociation of vitamin D receptor (VDR) BsmI (rs1544410) gene polymorphism with the chronic kidney disease (CKD) susceptibility from the published reports are still conflicting. This meta-analysis was performed to evaluate the relationship between VDR BsmI (rs1544410) gene polymorphism and the risk of CKD. The association studies were identified from PubMed, Cochrane Library and China Biological Medicine Database on 1 March 2014, and eligible investigations were included and synthesized using meta-analysis method. Nine reports were recruited into this meta-analysis for the association of VDR BsmI gene polymorphism with CKD susceptibility. In this meta-analysis for overall populations, the BsmI B allele BB genotype and bb genotype were not associated with the risk of CKD (B allele: OR?=?1.12, 95% CI: 0.88–1.44, p?=?0.36; BB genotype: OR?=?1.15, 95% CI: 0.81–1.62, p?=?0.43; bb genotype: OR?=?0.86, 95% CI: 0.61–1.20, p?=?0.36). Furthermore, VDR BsmI gene polymorphism was not associated with CKD susceptibility in Asians and in Caucasians. In conclusion, the BsmI gene polymorphism was not associated with CKD susceptibility in overall populations, in Asians and in Caucasians. However, more studies should be conducted to confirm it. 相似文献
