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| | Electrophysiological Assay (In vitro Assay) |
| Description: | Patch voltage clamp electrophysiology allows for the direct measurement and quantification of block of voltage-gated sodium channels (Nav's), and allows the determination of the time- and voltage-dependence of block which has been interpreted as differential binding to the resting, open, and inactivated states of the sodium channel (Hille, B., Journal of General Physiology (1977), 69: 497-515).The following patch voltage clamp electrophysiology studies were performed on representative compounds of the invention using human embryonic kidney cells (HEK), permanently transfected with an expression vector containing the full-length cDNA coding for the desired human sodium channel α-subunit, grown in culture media containing 10% FBS, 1% PSG, and 0.5 mg/mL G418 at 37° C. with 5% CO2. HEK cells used for the electrophysiology (EP) recordings had a passage number of less than 40 for all studies and were used within three days from the time of plating. Nav1.7 and Nav1.5 cDNAs (NM_00297 |
| Affinity data for this assay | |
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