Mechanisms of action of vanadium.

Mechanisms of action of vanadium.
复制标题

钒的作用机制。

DOI:
10.1146/annurev.pa.24.040184.002441
复制
发表时间:
1984
影响因子:
12.5
通讯作者:
B. R. Nechay
B. R. Nechay
中科院分区:
医学1区
文献类型:
--
作者:
B. R. Nechay

文献摘要

参考文献

被引文献

相似文献

钒分布广泛,是地壳中第21位最丰富的元素,平均含量为135 ppm。在海水中,钒的丰度排名第三十四,平均浓度仅为 2 ppb。由于它作为某些生命形式的基本元素而进化,并且由于其广泛的工业用途,钒的生物作用引起了科学家的兴趣。关于钒的历史和先前的知识都有精彩的记载。 (1-7)。钒的化学性质很复杂,因为该金属可以以 -1 到 +5 的氧化态存在,并且经常形成聚合物 (8)。最近,Rubinson (9) 回顾了有关生化活性钒形态的材料。以下概括似乎是合理的。在哺乳动物和鸟类中正常浓度较低的情况下,任何游离钒都将以水合单体形式存在。在 pH 4-8 的体液中,主要物质是 VOi(+5 氧化态)、钒酸盐(偏钒酸盐)。 VOi 可以通过阴离子转运系统进入某些细胞,并被谷胱甘肽还原为 VOH(+4 氧化态)氧钒。据推测,氧化还原反应可能如下:H+ + VOi + 2GSH → Y02+ + G2S2 + OH+ e + H20。可以预期与细胞外和细胞内配体的广泛结合。由于磷酸盐和 Mg2+ 在生物过程中普遍存在,YOi 作为磷酸盐和 Y02+ 的类似物,其大小类似于 Mg2+(各自的离子半径:0.60 和 0.65 英尺),可能具有许多生物化学和细胞作用位点。例如,钒化合物可抑制 ATP 磷酸水解酶、核糖核酸酶、腺苷酸激酶、磷酸果糖激酶、角鲨烯合成酶、3-磷酸甘油醛脱氢酶 (10)、
Vanadium is widely distributed, the twenty-first most abundant element in the Earth's crust, with an average content of 135 ppm. In sea water, vanadium ranks thirty-fourth in abundance, with an average concentration of only 2 ppb. Because it evolved as an essential element for certain forms of life and also because of its wide industrial use, the biological actions of vanadium are of interest to scientists. Excellent accounts of the history and previous know ledge of vanadium are available. (1-7). The chemistry of vanadium is complex because the metal can exist in oxidation states from -1 to +5 and forms polymers frequently (8). Recently Rubinson (9) reviewed the material concerning the form of biochemically active vanadium. The following generalizations appear justified. At low­ normal concentrations in mammals and birds, any free vanadium will be in hydrated, monomeric form. In the body fluids at pH 4-8, the predominant species will be VOi ( + 5 oxidation state), vanadate (metavanadate). VOi may enter certain cells by an anion transport system and be reduced by glutathione to VOH (+4 oxidation state), vanadyl. By way of speculation, the oxidation­ reduction reactions may be as follows: H+ + VOi + 2GSH � Y02+ + G2S2 + OH+ e + H20. Extensive binding to extraand intracellular ligands may be expected. Since phosphate and Mg2+ are ubiquitous in biological processes, YOi as the analogue of phosphate and Y02+, which resembles the size of Mg2+ (respective ionic radii: 0.60 and 0.65 ft.), potentially have many bio­ chemical and cellular sites of action. For example, vanadium compounds in­ hibit ATP phosphohydrolases, ribonuclease, adenylate kinase, phosphofructo­ kinase, squalene synthetase, glyceraldehyde-3-phosphate dehydrogenase (10),
DOI: --
发表时间: 1982
期刊: The Journal of biological chemistry
影响因子: --
作者:
Chasteen,ND;Theil,EC
通讯作者: Theil,EC
动力蛋白 ATP 酶的瞬态动力学分析。
DOI: 10.1002/cm.970020720
发表时间: 1982
期刊: Progress in clinical and biological research
影响因子: --
作者:
Johnson,KA;Porter,ME
通讯作者: Porter,ME
钒酸盐对大鼠肾小管功能的影响。
DOI: 10.1152/ajprenal.1981.240.6.f522
发表时间: 1981
期刊: The American journal of physiology
影响因子: --
作者:
Westenfelder,C;Hamburger,RK;Garcia,ME
通讯作者: Garcia,ME
钒的心脏作用。
DOI: --
发表时间: 1983
期刊: Federation proceedings
影响因子: --
作者:
Akera,T;Temma,K;Takeda,K
通讯作者: Takeda,K
DOI: 10.1007/978-1-4684-4259-5_33
发表时间: 1982
影响因子: --
作者:
Herzig,JW;Peterson,JW;Solaro,RJ;Rüegg,JC
通讯作者: Rüegg,JC