Abstract
NS 1619 activates the large-conductance Ca(2+)-dependent K+ channel (BKCa) in membrane patches isolated from rat ventromedial hypothalamic neurones. The activation is concentration dependent, with a maximal effect at less than 30 microM, reversible and can be inhibited by application of iberiotoxin to the extracellular membrane. NS 1619 does not activate ATP-K+ channels present in the same neurones.
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