首页> 美国政府科技报告 >Patch-Clamp Studies in Human Macrophages: Single-Channel and Whole-Cell Characterization of Two K+ Conductances
【24h】

Patch-Clamp Studies in Human Macrophages: Single-Channel and Whole-Cell Characterization of Two K+ Conductances

机译:人类巨噬细胞中的膜片钳研究:两个K +电导的单通道和全细胞表征

获取原文

摘要

Human peripheral blood monocytes cultured for varying periods of time were studied using whole-cell and single channel patch-clamp recording techniques. Whole-cell recordings revealed both an outward potassium current activating at potentials > 20 mV and an inwardly rectifying K current present at potentials negative to -60 mV. Tail currents elicited by voltage steps that activated outward current reversed near Ek, indicating that the outward current was the single-channel current. Excised and cell-attached single-channel data showed that calcium-activated K channels were absent in freshly isolated monocytes but were present in > 85% of patches from macrophages cultured for >7 days. Only whole-cell inward currents. The inward current was blocked by external barium and increased when K10 increased. Inward-rectifying single-channel currents with a conductance of 28 pS were present in cells exhibiting inward whole-cell currents. These single-channel currents are similar to those described in detail in J774. 1 cells. Keywords: Ion channels, Ionic current, Reprints. (aw)

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号