| Autor: |
Thaler, Manfred, Steigner, Wieland, Köhler, Kurt, Simonis, Wilhelm, Urbach, Wolfgang |
| Zdroj: |
FEBS Letters; January 1987, Vol. 219 Issue: 2 p351-354, 4p |
| Abstrakt: |
A concentration-dependent effect of Ba 2+on voltage-independent opening of K +channels in Eremosphaerawas examined. Low concentrations of external Ba 2+(10 −2mM) cause the release of repetitive transient potentials. Higher concentrations of Ba 2+, however, inhibit these Ba 2+-induced repetitive and also light-off triggered transient potentials. Experiments with different Ca 2+concentrations in the medium and the treatment with La 3+suggest the interaction of Ba 2+with Ca 2+channels and the participation of internal Ca 2+in the activation of K +channels. |
| Databáze: |
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