| 产品描述: | Ibutilide (U70226E free base) 是一种延长动作电位的抗心律失常剂,作用于 AT-1 细胞,可有效阻断快激活延迟整流钾电流 (IKr)。 |
| 体外研究: |
Ibutilide is a potent IKr blocker with an EC50 value of 20 nM at +20 mV in atrial tumor myocytes (AT-1) cells. Ibutilide blocks IKr in cells expressing HERG+MDR1*1 to the same extent as cells expressing HERG alone (IC50: 22.5 nM vs 27.4 nM). However, cells expressing MDR1*7 show a marked resistance to Ibutilide (IC50: 105.3 nM vs 27.4 nM). |
| 体内研究: |
Ibutilide prolongs cardiac repolarization in vitro and in vivo. Ibutilide infusions (administered cumulatively in three doses, 0.01, 0.02 and 0.05 mg/kg i.v., each as a 10-min infusion) results in both polymorphic and monomorphic non-sustained ventricular tachycardia. |
| 参考文献: |
1. Ibutilide, a methanesulfonanilide antiarrhythmic, is a potent blocker of the rapidly activating delayed rectifier K+ current (IKr) in AT-1 cells. Concentration-, time-, voltage-, and use-dependent effects. Circulation. 1995 Mar 15;91(6):1799-806. 2. B F McBride, et al. Influence of the G2677T/C3435T haplotype of MDR1 on P-glycoprotein trafficking and Ibutilide-induced block of HERG. Pharmacogenomics J. 2009 Jun;9(3):194-201. 3. S S Chugh, et al. Altered response to Ibutilide in a heart failure model. Cardiovasc Res. 2001 Jan;49(1):94-102. |
| 溶解性: |
可溶于DMSO |
| 保存条件: |
-80°C 6个月;-20°C 1个月 |
| 配置溶液浓度参考: |
|
1mg |
5mg |
10mg |
| 1 mM |
2.6 ml |
13.001 ml |
26.002 ml |
| 5 mM |
0.52 ml |
2.6 ml |
5.2 ml |
| 10 mM |
0.26 ml |
1.3 ml |
2.6 ml |
| 50 mM |
0.052 ml |
0.26 ml |
0.52 ml |
|
| 注意: |
部分产品我司仅能提供部分信息,我司不保证所提供信息的权威性,仅供客户参考交流研究之用。 |