Results 21 to 30 of about 5,189 (159)
Key Largo woodrats are a small and endangered island species, whose individuals tend to occur in family groups. Isolation from mainland populations, predation, and habitat fragmentation have caused genetic drift, leading to low overall diversity. Here, we found that a major category 4 hurricane promoted genetic diversity in the Key Largo woodrat ...
Taylor Ackley +5 more
wiley +1 more source
DNA甲基化与高脂血症的关系研究进展 Progress of the Relationship between DNA Methylation and Hyperlipidemia
高脂血症是心血管疾病的主要危险因素之一,且是可遗传、可干预的因素。较多研究发现,DNA甲基化修饰与血脂水平之间具有相关性,目前发现涉及的基因主要有肉碱棕榈酰转移酶1A(carnitine palmitoyl transferase 1 A,CPT1A)基因、三磷酸腺苷结合盒转运体G1(adenosine triphosphate binding cassette transporter G1,ABCG1)基因、固醇调控元件结合蛋白1(sterol regulatory element-binding ...
韩颖, 周宏宇, 李子孝
doaj +1 more source
The Effects and Mechanisms of JMJD1A on Colorectal Tumorigenesis [PDF]
结直肠癌(colorectalcancer,CRC)是当今世界高发恶性肿瘤之一,多数由散发腺瘤阶段性发展而来,少数结肠癌的发生呈家族性聚集现象或由炎性肠病诱导发生。对结肠癌的早期筛查与诊断是结肠癌防治重点,由于结肠癌患者个体间差异性大,对靶向药物的开发是未来结肠癌治疗的重要辅助手段。 组蛋白去甲基化酶JMJD1A(Jumonjidomaincontaining1A)通过羟基化作用使组蛋白赖氨酸去甲基进而行使转录调节功能,参与精子生成、能量代谢、干细胞更新调控,也参与低氧诱导下的肿瘤调控 ...
苗萌萌
core
ABSTRACT Objective To evaluate the performance of non‐invasive prenatal testing (NIPT) in vanishing‐twin and multiple pregnancies. Methods This study was conducted as part of the TRIDENT‐2 study, in which NIPT was offered as a first‐tier screening test to women with a multiple pregnancy or vanishing‐twin pregnancy between 1 June 2020 and 31 March 2023 ...
J. C. A. van Eekhout +86 more
wiley +1 more source
表观遗传学是研究在基因的核苷酸序列不发生改变的情况下,基因发生了可遗传的表达的一门新兴学科。其机制主要包括DNA甲基化,组蛋白修饰,代谢记忆,RNA介导的基因沉默,染色质重塑及基因组印记等。糖尿病是以高血糖及胰岛素缺乏为特征的一种多因素的慢性代谢性疾病,与基因及环境因素相关[1]。近几年,越来越多的研究表明 ...
燕艳, 刘仲祥, 张秀娟
doaj
The epigenetic mechanism of imprinted gene IGF2 regulated by MEN1 in hepatocellular carcinogenesis [PDF]
原发性肝癌是肝细胞或肝内胆管上皮细胞发生的恶性肿瘤。死亡率仅次于胃癌和食道癌,其中肝细胞癌(hepatocellularcarcinoma,HCC)占原发性肝癌的90%。我们实验室围绕menin复合物调控的组蛋白甲基化与疾病发生关系开展了较系统深入的研究,证明了menin在肝细胞肝癌、非小细胞型肺癌及恶性黑色素瘤等非内分泌系统肿瘤中的重要生物学功能,阐明了menin调控组蛋白甲基化修饰的规律及机制。胰岛素样生长因子——2(insulinlikegrowthfactor2,IGF2 ...
丁丽红
core
The Two Faces of Introgression in Conservation Biology 基因渗入在保育生物学中的双重面貌
Conservation biologist need to take into account the various aspects of introgression in their attempts to protect the species integrity and evolutionary potential of threatened species. To do so, they have to overcome the bias created by the Mayrian species concept that considers species as having distinct gene pools.
Harald Schneider, Charles H. Cannon
wiley +1 more source
Lung epithelial cell differentiation in human and mouse:Environment, epigenetics and epigenetic editing [PDF]
Roken tijdens de zwangerschap verhoogt het risico op ontwikkeling van astma op de kinderleeftijd. Daarnaast lijkt roken tijdens de zwangerschap een risicofactor te zijn voor ontwikkeling van de chronische rook-gerelateerde longziekte COPD (chronisch ...
Song, Juan
core +4 more sources
本文通过选择物燕科8个物种以及雨燕科5个物种,以线粒体基因Cyt b作为分子标记,通过分子生物学手段对燕科和雨燕科部分鸟类进行重建系统发育树,采用贝叶斯推论法(Bayesian Inference)和最大似然法(ML,Maximum Likelihood)以验证分子生物学分类结果是否与宏观形态学分类结果相一致。结果表明,两种方法所建系统发育树具有相同的拓扑结构,燕科和雨燕科鸟类形成两个不同的支系。进一步的遗传距离分析表明,白腰雨燕和洋斑燕之间遗传距离最大,达到0.197 ...
刘方庆 胡梦英 文陇英
doaj
China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition
Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
wiley +1 more source

