| 货号 | 规格 | 价格 | 上海 | 北京 | 武汉 | 南京 | 购买数量 |
|---|---|---|---|---|---|---|---|
S80616-50mg |
≥98% | ￥480.00 | 4 | - | - | - |
|
S80616-100mg |
≥98% | ￥950.00 | 货期：2-3天 | - | - | - |
|
| 产品描述： | Doxapram inhibits TASK-1, TASK-3, TASK-1/TASK-3 heterodimeric channel function with EC50 of 410 nM, 37 μM, 9 μM, respectively. Target: Potassium Channel Doxapram is a respiratory stimulant. Doxapram (15-150 microM) also evoked 3H overflow in a concentration dependent manner, and doxapram-evoked release was inhibited by the Ca2+ channel blocker nifedipine (5 microM). Analysis of released tritiated compounds suggested that doxapram preferentially stimulated the release of dopamine. Our results indicate that the mechanism of action of doxapram shares similarities with that of hypoxia in the carotid body. Doxapram (1-100 microM) caused rapid, reversible and dose-dependent inhibitions of K+ currents recorded in type I cells (IC50 approximately 13 microM). doxapram was also seen to directly inhibit Ca(2+)-independent K+ currents. Doxapram was a more potent inhibitor of the Ca(2+)-activated K+ currents recorded under control conditions. Doxapram (10 microM) was without effect on L-type Ca2+ channel currents recorded under conditions where K+ channel activity was minimized and was also without significant effect on K+ currents recorded in the neuronal cell line NG-108 15, suggesting a selective effect on carotid body type I cells. The effects of doxapram on type I cells show similarities to those of the physiological stimuli of the carotid body, suggesting that doxapram may share a similar mechanism of action in stimulating the intact organ | ||||||||||||||||||||
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| 靶点： | Potassium Channel | ||||||||||||||||||||
| 体内研究： | Doxapram (0.05-0.25 mg/kg，静脉注射) 通过刺激猫颈动脉和主动脉化学感受器选择性地间接激活延髓呼吸神经元。 Doxapram (> 1 mg/kg，静脉注射) 刺激犬脑干呼吸中枢，而非外周化学感受器。 Doxapram (1-2 mg/kg，静脉注射，单次给药或每日一次，连续 14 天) 对家猪心房具有特异性抗心律失常作用。 |
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| 参考文献： | 1. Cotten JF, et al. The ventilatory stimulant doxapram inhibits TASK tandem pore (K2P) potassium channel function but does not affect minimum alveolar anesthetic concentration. Anesth Analg, 2006, 102(3), 779-785. 2. Peers, C., Effects of doxapram on ionic currents recorded in isolated type I cells of the neonatal rat carotid body. Brain Res, 1991. 568(1-2): p. 116-22. 3. Anderson-Beck, R., et al., Doxapram stimulates dopamine release from the intact rat carotid body in vitro. Neurosci Lett, 1995. 187(1): p. 25-8. | ||||||||||||||||||||
| 保存条件： | 2-8℃ | ||||||||||||||||||||
| 配置溶液浓度参考： |
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| 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。 |
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