Results 21 to 30 of about 31,411 (255)
Zhongguo shiyan zhenduanxue, 2012 目的探讨原发性肝细胞癌人群中谷胱甘肽巯基转移酶基因多态性与肝癌发生、发展的关系。方法我院2008年10月-2010年4月收治的原发性肝癌患者与健康体检者各150名,提取血样,利用多重PCR和限制性片段长度多态性检测法分别检测肝癌人群与体检健康者的谷胱甘肽巯基转移酶基因多态性,并进行对比分析。结果该肝癌人群中:谷胱甘肽巯基转移酶基因多态性型别在病例和对照组研究对象中出现的频率无显著性差别,P>0.05;GSTM1-null、GSTT1-null、GST01-Ala140Asp、GSTP1 ...
唐耘天 +5 more
doaj
Screening of SNP Loci of Growth-related Candidate Gene and Genetic Diversity of Five Populations Based On Microsatellite Markers in Fujian Oyster, Crassostrea angulata [PDF]
, 2015 福建牡蛎(Crassostreaangulata，C.angulata)又名葡萄牙牡蛎，具有重要的经济价值和生态价值，但由于长期未经选育以及人工育苗的应用，导致牡蛎养殖出现经济性状衰退及死亡率逐年增高等现象，亟需加强种质资源保护，开展遗传改良研究。本研究利用单核苷酸多态性分子标记（singlenucleotidepolymorphism，SNP）对福建牡蛎生长相关的5个候选基因，即胰岛素相关多肽（insulinrelatedpeptides，IRPs）、ɑ-淀粉酶（ɑ-Amylase，ɑ-AMY ...
楚瑞敏
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Journal of Animal Ecology, EarlyView.This population‐comparative study reveals that male and female parents respond differently to social and ecological conditions. This sex‐specific responsive strategy is related to the incongruent parental care systems across populations in Chinese penduline tits.
Jia Zheng +5 more
wiley +1 more source
E-选择素基因rs3917422A和rs5355C位点多态性与哈尼族原发性高血压相关性研究
Zhongguo shiyan zhenduanxue, 2009 目的探讨E-选择素基因rs3917422A\C和rs5355C\T位点多态性与哈尼族原发性高血压的关系。方法采用PCR测序技术,对云南哈尼族172例原发性高血压患者和133例正常对照的E-选择素基因rs3917422A\C和rs5355C\T的错义突变进行检测。结果在哈尼族中未发现有rs3917422A多态存在,发现rs5355C基因有多态存在。rs5355C等位基因频率在原发性高血压组中为10.5%,正常对照组中为13.2%,两组之间无显著性差异（P=0.311,P>0.05）。结论哈尼族中E ...
黎曼侬 +6 more
doaj
, 2012 目的筛选稀有鮈鲫HAN近交系遗传质量检测标记。方法采用鳞片活体移植和同工酶聚丙烯酰胺凝胶电泳法对稀有鮈鲫HAN近交系的遗传纯度进行检测。结果在免疫标记分析中,鳞片同体移植存活率为96.7%以上,野生群体移植存活率为7.4%,而HAN系F22鳞片异体移植的成功率为80%,显著高于野生群体。在生化标记分析中,在HAN系F22中无多态性位点,不同个体的同工酶谱呈现高度一致,在野生群体中有2个多态位点即est2和est3,多态位点的比例为15.56%。结论经过多代近亲交配 ...
曹文宣, 王伟, 王剑伟, 邵燕
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Methods in Ecology and Evolution, EarlyView.Abstract Molecular identification of insect food webs can accurately reveal complex trophic interactions and serve as a foundation for understanding ecosystem functioning and advancing biodiversity conservation. This process typically involves DNA library construction, high‐throughput sequencing and subsequent steps, including data assembly, annotation,
Xiao‐man Zhang +9 more
wiley +1 more source
Protein phosphatase 2A-B55δ enhances chemotherapy sensitivity of human hepatocellular carcinoma under the regulation of microRNA-133b [PDF]
, 2016 目的：原发性肝细胞癌(hepatocellularcarcinoma，HCC)是我国公共卫生关注的热点问题之一，寻找增强HCC化疗敏感性的有效干预靶点具有重要意义。蛋白磷酸酶2A(proteinphosphatase2A，PP2A)是重要的肿瘤抑制因子；PPP2R2D基因编码的PP2A-B55δ亚基参与细胞周期有丝分裂调控。我们前期研究验证了PPP2R2D基因3’-非翻译区(3’-untranslatedregion，3’UTR)的+15G>C多态性位点受微小RNA-133b(microRNA-133b，
庄群瑛
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A link between increased temperature and avian body condition in a logged tropical forest
Conservation Biology, EarlyView.Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi +7 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2014 目的探讨白细胞介素1A(IL-1A)多态性与神经胶质瘤的相关性。方法采用聚合酶链反应-限制性片段长度多态性检测154例神经胶质瘤患者和195例正常对照组IL-1A多态性。结果 IL-1A+4845G/T位点:与GG基因型相比,GT/TT基因型显著增加了神经胶质瘤的发病风险(GT/TT与GG相比:χ2=5.94,P=0.015)。与G等位基因相比,T等位基因显著增加了神经胶质瘤的发病风险(χ2=5.97,P=0.015)。未发现IL-1A-889C/T多态性频率分布在对照组和神经胶质瘤组之间存在显著差异 ...
岩亮, 舒云
doaj
Mating system, brood parasitism and extra-pair behaviour in the Chinese egret (Egretta eulophotes) basing on the microsatellite technology [PDF]
, 2015 动物的婚配制度影响着个体的繁殖成功率，直接关系到群体的遗传多样性和种群动态的发展变化，是保护遗传学和生态学领域中非常重要的研究内容。已有学者野外观察到黄嘴白鹭（Egrettaeulophotes）存在婚外交配（EPC）行为，然而，有关黄嘴白鹭的婚配制度、EPC的产生机制以及其是否会导致婚外父权（EPP）现象还未清楚。此外，许多集群繁殖的鸟类都存在种内巢寄生（CBP）现象，而关于黄嘴白鹭巢寄生行为的研究也尚未开展。因此，本研究围绕黄嘴白鹭的婚配制度问题，主要开展以下几方面研究： （1）对3种非损伤性样品 ...
戴宇飞
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