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Inhibition of tacrine on delayed rectifier and transient outward potassium currents in cultured rat hippocampal neurons
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- Author:
- No author available
- Journal Title:
- ACTA PHARMACEUTICA SINICA
- Issue:
- 2
- DOI:
- 10.3321/j.issn:0513-4870.2004.02.004
- Key Word:
- 他克林;钾通道;海马;神经元;膜片钳技术
Abstract： 目的研究他克林对培养大鼠海马神经元上延迟整流钾电流(IK)和瞬间外向钾电流(IA)的影响.方法大鼠海马神经元原代培养,全细胞膜片钳记录培养大鼠海马神经元上电压依赖性外向钾电流和瞬间外向钾电流变化.结果他克林明显抑制海马神经元延迟整流钾电流和瞬间外向钾电流,呈浓度依赖性,对延迟整流钾电流的敏感性高于瞬间外向钾电流.30 μmol·L-1他克林显著影响IK和IA稳态激活曲线,使所有电流的V1/2左移.结论他克林明显抑制延迟整流钾电流和瞬间外向钾电流,对延迟整流钾电流的敏感性高于瞬间外向钾电流.
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