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Published on: February 11, 2011
[Potassium channels in saccular hair cells in the bullfrog]
1PLA General Hospital, Beijing.
Abstract:
By means of cell-attached and excised inside-out patch clamp techniques, we studied ion channels of the basolateral membrane of hair cells isolated from the bull-frog's sacculus. Three types of K+ channels were recorded, with conductances of 19-23PS, 46PS and 78PS respectively. The reversal potential was -56 +/- 20mV. The kinetics of the high- and low-conductance type K+ channels was different. The former was identified as KCa and the latter was suspected as KDR or KIR. They have important function in the sensory coding of hair cells.
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