A novel barium-sensitive calcium influx into rat astrocytes at low external potassium.

@article{Dallwig2000ANB,
  title={A novel barium-sensitive calcium influx into rat astrocytes at low external potassium.},
  author={Roger Dallwig and Harald Vitten and Joachim W. Deitmer},
  journal={Cell calcium},
  year={2000},
  volume={28 4},
  pages={247-59}
}
Cultured rat cerebellar astrocytes, loaded with the Ca2+-sensitive fluorescent dyes Fura-2 or Fluo-3, responded with cytoplasmic Ca2+ transients, when the external K+ concentration was reduced from 5 mM to below 1 mM. Ca2+ transients were generated after changing to a saline containing 0.2 mM K+ in 82% of the cells (n =303) with a delay of up to 4 min. Cultured rat cortical neurones, which responded in high-K+ saline (50 mM) with Ca2+ transients, showed no Ca2+ responses in low K+ (n =22). In… CONTINUE READING

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