Tungstate competitively inhibits the utilization of molybdenum for the formation of xanthine dehydrogenases . 钨酸盐竞争性地抑制钼的利用以形成黄嘌呤脱氢酶。
2.
Tea contains , in addition to caffeine , small amounts of two other methyl xanthines , theobromine and theophylline , 3 , 7 - dimethy1 and 1 , 3 - dimethy1 xanthine , respectively 茶除了含咖啡因以外，还含有少量的另外两种甲基黄酮嘌呤，即可可碱和茶碱，它们分别是3 ， 7 -二甲基黄嘌呤和1 ， 3 -二甲基黄嘌呤。
3.
Drugs that block some activities of the enzyme , known as xanthine oxidoreductase ( xor ) , might therefore offer a novel antiobesity therapy designed to fight fat before it even forms , the researchers said 研究人员说，像黄嘌呤氧化还原酶（ xor ）等已知的阻止酶活性的药物，可能因此提供一种新的在肥胖形成前来对抗它的抗肥胖疗法。
4.
Second , carbon nanotube ( cnt ) was used in the fabrication of xanthine oxidase ( xod ) biosensor . xod / cnt / gc electrode was fabricated . the influences of cnt , ph and scan rate to the electrode were discussed 系统地研究了ph 、扫速对hrp酶电极电化学性能的影响,优化了电极的制备条件,实现了hrp酶电极对h2o2的响应,并考察了电极的稳定性。
5.
Protein kinase a is camp - dependent kinase , one of the most important signal transduction pathways , plays a pivotal role in growth , differentiation , tumor occur , cell cycle control , etc . pka activators such as camp , 8 - br - camp or phosphodiesterase ( pde ) inhibitor isomethyl butyl xanthine ( imbx ) or purified pka catalytic subunit all can inhibit germinal vesicle breakdown ( gvbd ) and meiotic maturation in mouse oocytes , also in xenopus oocytes 蛋白激酶a ( proteinkinasea ， pka )是依赖于camp的丝苏氨酸蛋白激酶，是重要的信号传导途径之一，广泛参与许多生命过程，包括生长、分化、肿瘤发生、细胞凋亡、细胞周期调控等。以小鼠卵母细胞为实验对象，给予pka激动剂camp 、 8 - br - camp或磷酸二酯酶抑制剂imbx ( isomethylbutylxanthine )均可抑制小鼠卵母细胞的胚泡破裂及减数分裂成熟。
6.
In the present study , after treated with xanthine / xanthine oxidase system , cells viability , cells cycle , the expression of apoptosis proteins p53 , bax and bcl - 2 , and the level of superoxidase , glutathione , malondialdehyde of neuronal differentiated pc 12 cells in the absence and / or presence of c . chinensis extract were also compared 通过比较活性氧作用细胞后的细胞活力、细胞周期、凋亡相关蛋白( p53 、 bax 、 bcl - 2 )水平以及细胞中sod 、 gsh 、 mda的差异，发现菟丝子提取物对活性氧引起的细胞凋亡有一定的保护作用。
