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Dual effects of tetrandrine on calcium-activated potassium channels in pulmonary artery smooth muscle cells

机译:粉防己碱对肺动脉平滑肌细胞钙激活钾通道的双重作用

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AIM: TO study the effects of tetrandrine (Tet) on calcium-activated potassium channels. METHODS: Inside-out configuration of patch- Clamp single channel recording techniques. RESULTS: Tet 7.5 and 15 μmol·L~-1 increased The open probability from control value 0.251 ± 0.012 to 0.340 ± 0.013 and 0.415 ±0.011, respectively (P<0.01), decreased the close time from (61±15) ms to (33 ±10) and (28 ± 11), ms respectively (P<0.01). CONCLUSION: Tet has concentration-dependent Dual effects on K_Ca channels in isolated rat Pulmonary smooth muscle cells.
机译:目的:研究粉防己碱(Tet)对钙激活钾通道的影响。方法:Patch-Clamp单通道记录技术的内外配置。结果:Tet 7.5和15μmol·L〜-1的打开概率分别从控制值0.251±0.012降低至0.340±0.013和0.415±0.011(P <0.01),使闭合时间从(61±15)ms降低至(33±10)和(28±11),ms(P <0.01)。结论:Tet对离体大鼠肺平滑肌细胞的K_Ca通道具有浓度依赖性的双重作用。

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