搜索结果: 1-15 共查到“儿科学 DNA”相关记录20条 . 查询时间(0.168 秒)
重症肺炎支原体肺炎患儿肺炎支原体DNA复制水平与病情的相关性
重症支原体肺炎 支原体DNA 支气管肺泡灌洗术 儿童
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2020/6/24
探讨重症肺炎支原体肺炎（SMPP）患儿咽拭子、肺泡灌洗液（BALF）中肺炎支原体DNA （MP-DNA）复制水平与病情的相关性。方法 44例行支气管肺泡灌洗术的SMPP患儿为研究对象，分别在急性期和恢复期检测相关血清细胞因子水平及咽拭子MP-DNA复制倍数，并检测急性期BALF中白细胞介素（IL）-18水平及MP-DNA复制倍数。并按照病程中是否出现呼吸衰竭需要机械通气分为机械通气组（n=19）与...
缺氧缺血脑损伤新生大鼠大脑皮质组织线粒体DNA羟甲基化水平
缺氧缺血性脑病 线粒体DNA 羟甲基化 新生大鼠
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2020/6/16
检测缺氧缺血脑损伤新生大鼠大脑皮质组织线粒体DNA（mtDNA）中5-羟甲基胞嘧啶（5hmC）的甲基化含量及动态变化。方法 将24只7日龄雄性Sprague-Dawley大鼠随机分为对照组、24 h模型组和48 h模型组，每组8只。采用结扎颈总动脉结合缺氧法构建新生大鼠缺氧缺血性脑损伤动物模型，对照组不接受结扎及缺氧处理。采用化学氧化法结合重亚硫酸盐转化测序技术（oxBS-Seq）检测大鼠大脑皮质...
Role of the Multifunctional DNA Repair and Redox Signaling Protein Ape1/Ref-1 in Cancer and Endothelial Cells: Small-Molecule Inhibition of the Redox Function of Ape1
APE1/Ref-1 redox signaling cancer
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2014/12/12
The DNA base excision-repair pathway is responsible for the repair of DNA damage caused by oxidation/alkylation and protects cells against the effects of endogenous and exogenous agents. Removal of th...
Protection of Human Lung Cells against Hyperoxia Using the DNA Base Excision Repair Genes hOgg1 and Fpg
oxygen toxicity DNA damage DNA repair
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2014/12/12
Hyperoxia causes pulmonary toxicity in part by injuring alveolar epithelial cells. Previous studies have shown that toxic oxygen-derived species damage DNA and this damage is recognized and repaired b...
Altering DNA Base Excision Repair: Use of Nuclear and Mitochondrial-Targeted N-Methylpurine DNA Glycosylase to Sensitize Astroglia to Chemotherapeutic Agents
DNA repair astrocytes
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2014/12/12
Primary astrocyte cultures were used to investigate the modulation of DNA repair as a tool for sensitizing astrocytes to genotoxic agents. Base excision repair (BER) is the principal mechanism by whic...
DNA Repair Proteins as Molecular Targets for Cancer Therapeutics
DNA repair cancer therapeutics
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2014/12/12
Cancer therapeutics include an ever-increasing array of tools at the disposal of clinicians in their treatment of this disease. However, cancer is a tough opponent in this battle and current treatment...
Conversion of the Bifunctional 8-oxoguanine/β-δ AP DNA Repair Activities of Drosophila Ribosomal Protein S3 into the Human S3 Monofunctional β- elimination Catalyst Through a Single Amino Acid Change
DNA repair drosophila ribosomal protein s3
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2014/12/12
The Drosophila S3 ribosomal protein has important roles in both protein translation and DNA repair. In regards to the latter activity, it has been shown that S3 contains vigorous N-glycosylase activit...
A novel fluorometric oligonucleotide assay to measure O 6-methylguanine DNA methyltransferase, methylpurine DNA glycosylase, 8-oxoguanine DNA glycosylase and abasic endonuclease activities: DNA repair status in human breast carcinoma cells overexpressing methylpurine DNA glycosylase
APE1/Ref-1 DNA repair status
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2014/12/12
DNA repair status plays a major role in mutagenesis, carcinogenesis and resistance to genotoxic agents. Because DNA repair processes involve multiple enzymatic steps, understanding cellular DNA repair...
Conditional Targeting of the DNA Repair Enzyme hOGG1 into Mitochondria
DNA repair mitochondria
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2014/12/12
Oxidative damage to mitochondrial DNA (mtDNA) has been suggested to be a key factor in the etiologies of many diseases and in the normal process of aging. Although the presence of a repair system to r...
Knockdown of the DNA repair and redox signaling protein Ape1/ Ref-1 blocks ovarian cancer cell and tumor growth
base excision repair APE1/Ref-1 ovarian cancer
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2014/12/12
Apurinic endonuclease 1/redox effector factor-1 (Ape1/Ref-1 or Ape1) is an essential protein with two distinct functions. It is a DNA repair enzyme in the base excision repair (BER) pathway and a redu...
N-methylpurine DNA glycosylase overexpression increases alkylation sensitivity by rapidly removing non-toxic 7-methylguanine adducts
N-methylpurine DNA glycosylase alkylating agents cancer therapeutics
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2014/12/12
Previous studies indicate that overexpression of N-methylpurine DNA glycosylase (MPG) dramatically sensitizes cells to alkylating agent-induced cytotoxicity. We recently demonstrated that this sensiti...
APE1/Ref-1 (APE1), the mammalian ortholog of Escherichia coli Xth, and a multifunctional protein possessing both DNA repair and transcriptional regulatory activities, has a pleiotropic role in control...
The yeast 8-oxoguanine DNA glycosylase (Ogg1) contains a DNA deoxyribophosphodiesterase (dRpase) activity
Ogg1 cloning dRpase activity
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2014/12/12
The yeast OGG1 gene was recently cloned and shown to encode a protein that possesses N-glycosylase/AP lyase activities for the repair of oxidatively damaged DNA at sites of 7,8-dihydro-8-oxoguanine (8...
DNA测序研究维生素D受体基因多态性与儿童克罗恩病相关性
维生素D受体 25羟维生素D 基因多态性 儿童
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2014/11/14
初步探讨维生素D受体基因多态性TaqI、BsmI、ApaI位点在儿童克罗恩病（CD）发病中的作用。方法：选取19例CD患儿为病例组，122例正常健康体检儿童为对照组。ELISA方法检测血清25羟维生素D3 [25(OH)D3]水平；基因测序方法检测两组维生素D受体基因多态性TaqI、BsmI、ApaI位点，比较两组之间基因型和等位基因分布频率。结果：病例组血清25(OH)D3水平（17.3±2.4...
从基因启动子区DNA甲基化环节, 探讨n-3多不饱和脂肪酸(n-3 polyunsaturated fatty acids, n-3 PUFAs)对肥胖状态下瘦素表达的表观遗传调控机制。方法 3~4周龄C57BL/6J雄性小鼠30只, 随机被分为3组(每组10只), 分别给予高脂饲料、鱼油n-3 PUFAs高脂饲料(脂肪含量均为34.9%, 供能比为40%)以及正常脂饲料(脂肪含量为4.3%, 供...