Title : Urinary Bladder-Relaxant Effect of Kurarinone Depending on Potentiation of Large-Conductance Ca2+-Activated K+ Channels.

Pub. Date : 2016 Aug

PMID : 27251362






5 Functional Relationships(s)
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1 From 794 natural compounds, kurarinone, a flavanone from Sophora flavescens, strongly potentiated BKCa channels. kurarinone potassium calcium-activated channel subfamily M alpha 1 Rattus norvegicus
2 Whereas kurarinone strongly potentiated the homomeric BKCa channel composed of only the alpha subunit, its effects were much smaller on heteromeric channels coassembled with auxiliary beta subunits. kurarinone potassium calcium-activated channel subfamily M alpha 1 Rattus norvegicus
3 Although the activation kinetics was not altered significantly, the deactivation of BKCa channels was dramatically slowed by kurarinone treatment. kurarinone potassium calcium-activated channel subfamily M alpha 1 Rattus norvegicus
4 At the single-channel level, kurarinone increased the open probability of the BKCa channel without affecting its single-channel conductance. kurarinone potassium calcium-activated channel subfamily M alpha 1 Rattus norvegicus
5 These results indicate that kurarinone can directly potentiate BKCa channels and demonstrate the therapeutic potentials of kurarinone and its derivatives for developing antioveractive bladder medications and supplements. kurarinone potassium calcium-activated channel subfamily M alpha 1 Rattus norvegicus