搜索结果: 1-15 共查到“生物学 Ca2”相关记录40条 . 查询时间(0.118 秒)
哺乳动物胚胎发育的早期事件主要受卵子母源效应因子的调控。大家熟知的母源因子包括MATER (NLRP5)、PADI6以及STELLA (又称为DPPA3 或PGC7)等。它们由母源效应基因编码，并于卵子发生过程中积累和储存，参与早期胚胎发育的重要事件。哺乳动物卵子受精后的一个普遍特征是精子入卵后引发一系列重复的钙(Ca2+)升高，称为[Ca2+]i 振荡，这对卵子向胚胎过渡至关重要。尽管多年来已经...
Ca2+信号调控气孔运动的分子机制研究获进展（图）
Ca2+信号 气孔运动 分子机制
2022/9/13
2022年9月8日，The Plant Cell在线发表了中国科学院分子植物科学卓越创新中心植物分子遗传国家重点实验室王永飞研究组撰写的题为Multiple cyclic nucleotide-gated channels function as ABA-activated Ca2+ channels required for ABA-induced stomatal closure in Ara...
中科院上海分院王永飞研究组在Ca2+信号调控气孔运动的分子机制解析方面取得突破（图）
王永飞 气孔运动 植物分子遗传
2022/12/17
2022年9月8日，植物学领域的国际权威学术期刊The Plant Cell在线发表了中科院分子植物科学卓越创新中心植物分子遗传国家重点实验室王永飞研究组题为“Multiple cyclic nucleotide-gated channels function as ABA-activated Ca2+ channels required for ABA-induced stomatal clos...
2022年9月8日，植物学领域的国际权威学术期刊The Plant Cell在线发表了中科院分子植物科学卓越创新中心植物分子遗传国家重点实验室王永飞研究组题为“Multiple cyclic nucleotide-gated channels function as ABA-activated Ca2+ channels required for ABA-induced stomatal clos...
研究丝素肽(SFP)络合Ca2+含量对人正常肝细胞L02生长的影响。采用CaCl2-乙醇-水三元体系制备(SF)，并获得不同Ca2+含量的SFP后进行相对分子质量分级；采用EDTA滴定法测定SFP中Ca2+含量，细胞增殖率评价其细胞毒性，圆二色谱(CD)检测二级结构。结果表明：随透析时间(12、24、36 h)增加，SFP中Ca2+含量分别为16.00%、9.60%、0.40%，逐渐减小，对L02...
丛枝菌根真菌(AMF)能够和大多数陆地植物形成共生体系, 对于植物生长发育和适应各种逆境胁迫具有重要作用。很多研究表明干旱胁迫下AMF能够促进宿主植物对水分的吸收从而增强植物抗旱能力, 但目前针对AMF根外菌丝响应水分胁迫的生理变化以及AMF与宿主植物逆境信号交流的研究并不多。该研究利用AMF Rhizophagus irregularis和胡萝卜(Daucus carota var. sativ...
应用焦锑酸钾沉淀技术对水芹发育花药中的Ca2+分布特征和生理功能进行分析。在小孢子母细胞的胼胝质壁中聚集了较多的钙沉淀颗粒, 其他部位较少。小孢子母细胞减数分裂后, 花药药壁和药隔组织中的钙沉淀颗粒明显增加。早期小孢子先在花粉外壁基柱层中聚集了较多的钙沉淀颗粒, 在小孢子质膜与花粉外壁之间也特异性聚集了许多钙沉淀颗粒。在小孢子形成大液泡过程中, 小孢子质膜内陷形成小液泡, 钙沉淀颗粒被包裹到小液泡...
海马CA2可控制脑回路激活与抑制平衡
脑 海马CA2 神经
2017/5/11
日本理化学研究所日前宣布，他们的一个国际联合研究小组通过对小鼠进行研究，发现脑内负责记忆的海马CA2可以控制海马内局部神经回路的激活与抑制平衡，从而发现了防止与记忆和位置认识相关的神经回路紊乱的机理。
基于家族分析的苜蓿逆境应答Ca2+ ATPase家族基因筛选与鉴定
苜蓿 Ca2+ ATPase 家族分析 逆境应答 表达分析
2018/12/29
Ca2+ ATPase属于P型ATPase超家族, 在植物对外界逆境的应答中发挥重要作用, 但迄今尚未有苜蓿Ca2+ ATPase基因研究的相关报道。为筛选逆境胁迫应答Ca2+ ATPases, 本研究鉴定获得了16个苜蓿Ca2+ ATPase家族成员, 分布在7条染色体上, 且存在一对旁系同源基因。系统进化分析表明苜蓿Ca2+ ATPases分为ACA和ECA亚家族, ACA亚家族分为4组, 且...
Diet-induced dyslipidemia drives store-operated Ca2+ entry, Ca2+ dysregulation, non-alcoholic steatohepatitis, and coronary atherogenesis in metabolic syndrome
Coronary heart disease -- Risk factors Fatty liver Atherosclerosis
2015/5/22
Risk of coronary artery disease (CAD), the leading cause of death, greatly increases in metabolic syndrome. Metabolic syndrome (MetS; obesity, insulin resistance, glucose intolerance, dyslipidemia, an...
Role of Voltage-Dependent K+ and Ca2+ Channels in Coronary Electromechanical Coupling: Effects of Metabolic Syndrome
blood flow obesity metabolic syndrome
2015/5/22
Regulation of coronary blood flow is a highly dynamic process that maintains the delicate balance between oxygen delivery and metabolism in order to preserve cardiac function. Evidence to date support...
Ethylene activates a plasma membrane Ca2+-permeable channel in tobacco suspension cells
cytosolic Ca2+ activity ethylene patch-clamp plasma membrane Ca2+-permeable channel tobacco (Nicotiana tabacum) suspension cells
2015/2/5
Here, the effects of the ethylene-releasing compound, ethephon, and the ethylene precursor, 1-aminocyclopropane-1-carboxylic acid (ACC), on ionic currents across plasma membranes and on the cytosolic ...
Characterization of the sperm factor responsible for initiating [Ca2+]i oscillations during fertilization in mammalian eggs
Biological sciences Sperm factor Oscillations Fertilization Mammalian eggs
2015/1/28
During fertilization the sperm activates the mammalian egg by eliciting [Ca2+]i oscillations. However, how the sperm triggers [Ca2+]i oscillations in mammalian eggs remains unknown. To test the possib...
Characterizing the Heavy Metal Chelator, TPEN, as a Ca2+ Tool in the Mammalian Oocyte
Calcium Oocyte TPEN Endoplasmic Reticulum Egg
2014/12/12
N,N,N’,N’-tetrakis-(2-Pyridylmethyl) ethylenediamine (TPEN) is a heavy metal chelator with high affinity for zinc. TPEN causes important responses in mammalian eggs. For example, these eggs are arrest...
CHARACTERIZATION OF Ca2+ INFLUX PATHWAY(S) DURING MOUSE OOCYTE MATURATION
Calcium influx oocyte maturation SOCE Stim1 Phosphorylation
2014/12/10
Ca2+ signaling induced at fertilization, also known as oscillations, is essential in mammalian eggs to initiate early embryonic development. The generation of the oscillations relies on optimization o...