Extracellular cisplatin inhibit K_(Ca) current from isolated guinea pig cochlear outer hair cells
Ding-qiang Huang
Abstract
Ding-qiang Huang
Abstract
OBJECTIVE The effects of cisplatin on K Ca currents were investigated in dissociated cochlear outer hair cells of the guinea pig. METHODS Guinea pig was decapitated and the temporal bone was quickly removed. Then the lateral wall of the cochlea was removed. The organ of Corti were dissected out under a dissection microscope. Single cells were obtained by digestion with trypsin and gentle mechanical trituration. Patch clamp technique were used to record K Ca current from isolated guinea pig cochlear outer hair cells and determine the effect of cisplatin on it.RESULTS The results showed that the activation of K Ca channels were inhibited by extracellular cisplatin in concentration of 10 -5 mol·L -1 .CONCLUSION This finding demonstrates that extracellular cisplatin depress K Ca current in the guinea pig cochlear outer hair cells.
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OBJECTIVE The effects of cisplatin on K Ca currents were investigated in dissociated cochlear outer hair cells of the guinea pig. METHODS Guinea pig was decapitated and the temporal bone was quickly removed. Then the lateral wall of the cochlea was removed. The organ of Corti were dissected out under a dissection microscope. Single cells were obtained by digestion with trypsin and gentle mechanical trituration. Patch clamp technique were used to record K Ca current from isolated guinea pig cochlear outer hair cells and determine the effect of cisplatin on it.RESULTS The results showed that the activation of K Ca channels were inhibited by extracellular cisplatin in concentration of 10 -5 mol·L -1 .CONCLUSION This finding demonstrates that extracellular cisplatin depress K Ca current in the guinea pig cochlear outer hair cells.
Key concepts: Guinea pig, Chemistry, Organ of Corti, Extracellular, Cochlea, Outer hair cells, Cisplatin, Inner ear