CAS NO: | 94356-26-0 |
包装 | 价格(元) |
1mg | 电议 |
5mg | 电议 |
10mg | 电议 |
生物活性 | Piceatannol 3'-O-glucoside, an active component of Rhubarb, activates endothelialnitric oxide(NO)synthasethrough inhibition ofarginaseactivity withIC50s of 11.22 μM and 11.06 μM againstarginaseIandarginaseII, respectively. | ||||||||||||||||
IC50& Target | NO synthase[1] | ||||||||||||||||
体外研究 (In Vitro) | Piceatannol 3'-O-glucoside (Piceatannol-3'-O-β-D-glucopyranoside; PG) is a potent component of stilbenes, inhibits the activity of arginase I and II prepared from mouse liver and kidney lysates, respectively, in a dose-dependent manner. In human umbilical vein endothelial cells, incubation of Piceatannol 3'-O-glucoside markedly blocks arginase activity and increases nitrite and nitrate (NOx) production, as measured by Griess assay. In liver lysates, incubation of different concentrations of Piceatannol 3'-O-glucoside significantly decreases arginase I activity (75±5% at 1 μM, 72±7% at 3 μM, 62±1% at 10 μM) compared to untreated control (100±9%). In kidney lysates, the residual arginase activities after incubation of 1, 3 and 10 μM Piceatannol 3'-O-glucoside are 75±6, 74±5, and 53±8%, respectively. Arginase activity is measured in the presence of different concentration of Piceatannol 3'-O-glucoside (from 0 to 120 μM) using liver lysate and kidney lysate. The 50% inhibitory concentrations (IC50) are 11.22 μM for the liver lysate and 11.06 μM for kidney lysate. The values are obtained using the software of Graphpad prizm 4.0. Piceatannol 3'-O-glucoside inhibits arginase activity and increases NO production in HUVECs. Piceatannol 3'-O-glucoside inhibits lipoxygenase activity upto 66% at the concentration of 100 μM and IC50value is 69 μM[1]. | ||||||||||||||||
体内研究 (In Vivo) | In order to ascertain whether Piceatannol 3'-O-glucoside (PG) ameliorates vascular function in wild-type (WT) and atherogenic model mice [apolipoprotein E-null mice (ApoE-/-)] and to investigate the possible underlying mechanism. Preincubation of aortic vessels from WT mice fed a normal diet (ND) with Piceatannol 3'-O-glucoside attenuates vasoconstriction response to U46619 and phenylephrine (PE), while the vasorelaxant response to acetylcholine (Ach) is markedly enhanced in an endothelium-dependent manner. Piceatannol 3'-O-glucoside treatment attenuates the phenylephrine (PE)-dependent contractile response, and significantly improves the acetylcholine (Ach)-dependent vasorelaxation response in aortic rings from ApoE-/-mice fed a high-cholesterol diet (HCD). Piceatannol 3'-O-glucoside administration in the drinking water significantly reduces fatty streak formation in ApoE-/-mice fed an HCD[2]. | ||||||||||||||||
分子量 | 406.38 | ||||||||||||||||
性状 | Solid | ||||||||||||||||
Formula | C20H22O9 | ||||||||||||||||
CAS 号 | 94356-26-0 | ||||||||||||||||
中文名称 | 白皮杉醇 3'-O-葡萄糖苷 | ||||||||||||||||
结构分类 |
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运输条件 | Room temperature in continental US; may vary elsewhere. | ||||||||||||||||
储存方式 | 4°C, protect from light *In solvent : -80°C, 6 months; -20°C, 1 month (protect from light) | ||||||||||||||||
溶解性数据 | In Vitro: DMSO : 50 mg/mL(123.04 mM;Need ultrasonic) H2O :< 0.1 mg/mL (ultrasonic;warming;heat to 60℃)(insoluble) 配制储备液
* 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。 In Vivo: 请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照In Vitro方式配制澄清的储备液,再依次添加助溶剂: ——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议您现用现配,当天使用;
以下溶剂前显示的百
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