Results 11 to 20 of about 3,377 (106)
Abstract The accelerated pace of biological aging predicts mortality and morbidity later in life. The current study examines whether a change in supportive couple functioning buffers accelerated aging associated with stressful community environments among Black Americans who live in rural, Southern, disadvantaged neighborhoods.
Man‐Kit Lei, Steven R. H. Beach
wiley +1 more source
Highlights This is the first cross‐sectional study of the association between serum IGF2BP3 levels and odds of T2DM in high‐risk Chinese population. Two upregulated (IGF2BP2 and IGF2BP3) and 5 downregulated (METTL3, ALKBH1, YTHDF2, YTHDF3, and HNRNPC) m6A‐related genes could contribute to the occurrence of T2DM.
Xiaoying Wu +11 more
wiley +1 more source
Highlights Vitamin D receptor (VDR) methylation attenuates the association between physical activity and type 2 diabetes mellitus (T2DM). The methylation status of the VDR promoter is associated with the secretion and sensitivity of insulin. A high physical activity level is associated with a decreased risk of T2DM compared to a low physical activity ...
Songcheng Yu +7 more
wiley +1 more source
Background Staphylococcus pseudintermedius is the main aetiological agent of canine pyoderma. Whole genome sequencing is the most comprehensive way of obtaining relevant genomic information about micro‐organisms. Hypothesis/Objectives Oxford Nanopore technology enables quality sequencing and de novo assembly of the whole genome of S.
Lluís Ferrer +13 more
wiley +1 more source
ABSTRACT Articular cartilage regeneration remains a significant challenge because of its limited intrinsic healing capacity and the inadequacy of conventional treatments for restoring structural and functional integrity. In this study, a novel injectable composite hydrogel scaffold was designed to mimic the extracellular matrix (ECM) of native ...
Zhong‐Lian Wu +13 more
wiley +1 more source
DNA启动子或编码区CpG岛甲基化可通过转录抑制途径参与恶性肿瘤的发生和化疗药的耐药[1]。胞嘧啶5’位点甲基化(5-methylcytosine,5mc)是恶性肿瘤中常见的DNA甲基化位点[2]。5mc的形成是一个可逆的过程,研究显示TERT家族蛋白可将5mc进一步氧化为5-羟甲基胞嘧啶(5-hydroxymethylcytosine,5hmc),从而进入胸腺DNA合成途径[3]。恶性肿瘤,包括淋巴瘤中5hmC表达缺失预后差[4-6],提示监测5hmc表达水平有助于判断预后和疗效评估。
王学菊 +3 more
doaj
以黄瓜种子为材料,采用甲硫氨酸(Methionine,Met)浸种的方法,研究了不同浓度Met对黄瓜种子萌发、幼苗生长及离体子叶成花的影响.结果发现:(1)10-4 M Met处理3 h显著促进苗的生长而10-5 M Met浸种处理则有利于子叶的生长;(2)10-5 M Met浸种处理显著促进离体子叶成花;(3)离体子叶培养物的花芽分化力与子叶离体前的子叶/苗的鲜重比呈显著的正相关性 ...
WANGShou-feng(王首锋) +3 more
doaj +1 more source
MLXIPL、PMVK、TRIB3基因启动子区甲基化检测方法的建立
目的建立基因MLXIPL、PMVK、TRIB3启动子区DNA甲基化检测的方法。方法用亚硫酸氢钠和对苯二酚处理外周血细胞基因组DNA标本,以修饰后的DNA标本为模板,每个基因分别用内外侧两套不同的引物对启动子区进行巢式扩增。PCR产物进一步克隆、测序。结果测序结果表明,MLXIPL、PMVK、TRIB3启动子区基因中的非甲基化的C碱基转变为T碱基,而CpG岛被甲基化的C碱基则不改变。结论成功地建立了MLXIPL、PMVK、TRIB3基因甲基化检测的方法,为探索基因启动子区甲基化与疾病的关系做出了铺垫。
钱冉, 郑芳, 郭书忍, 杨娜
doaj
NSCLC组织中MGMT过甲基化状况与临床病理特征的关系探讨
目的探讨非小细胞肺癌(NSCLC)组织中DNA修复酶O6-甲基鸟嘌呤-DNA甲基转移酶(MGMT)过甲基化状况与临床病理特征的关系。方法以2006年3月到2009年7月在河南省胸科医院胸外科手术治疗的77例NSCLC患者作为研究对象,另外选取20例肺良性病变患者作为对照组,采用甲基化特异性PCR(MSP)检测两组病例肺部病变组织中MGMT的甲基化状况。结果研究组有26例出现MGMT基因甲基化,发生率为33.8%,对照组无1例出现MGMT基因甲基化,组间比较差异有统计学意义 ...
亢春彦 +4 more
doaj
白血病患者ID4、WT1、GLIPR1基因启动子区异常甲基化及mRNA表达的研究
DNA甲基化(methylation)作为最早发现的修饰途径一直属于生命科学的前沿课题之一,其能引起染色质结构、DNA构象、DNA稳定性及DNA与蛋白质相互作用方式的改变,从而控制基因表达[1]。研究显示[2]:白血病抑癌基因启动子异常甲基化与白血病的发病机制密切相关,抑癌基因启动子高甲基化抑制相关mRNA的表达水平可能为白血病发病的重要分子机制。本研究采用甲基化特异性PCR(MS-PCR)及实时荧光定量RT-PCR(RTQPCR)对ID4、WT1 ...
崔桂荣, 李焱, 贾振薇, 张金华
doaj

