Table 2.

Effects of Kv1.5W461F and Kv4.2W362F expression on SCG neuron firing properties 2-a

Rin(GΩ)Vm (mV)APThresh(pA)APA (mV)APD50 (msec)APD90(msec)n
Wild typeAll cells0.34  ± 0.03−48 ± 146  ± 582  ± 43.66  ± 0.145.92  ± 0.2028
Phasic0.26  ± 0.02−45 ± 267  ± 180  ± 54.18  ± 0.246.55  ± 0.3412
Adapting0.60  ± 0.06−48 ± 124  ± 287  ± 33.57  ± 0.205.96  ± 0.209
Tonic0.22  ± 0.02−52 ± 142  ± 291  ± 32.97  ± 0.034.87  ± 0.207
Kv1.5W461FAll cells0.38  ± 0.04−48 ± 132  ± 389  ± 83.08  ± 0.145.26  ± 0.2525
Phasic0.30  ± 0.03−49 ± 243  ± 62-16090  ± 3*3.16  ± 0.18*5.36  ± 0.37*6
Adapting0.48  ± 0.06−47 ± 224  ± 289  ± 33.25  ± 0.245.51  ± 0.4511
Tonic0.30  ± 0.05−50 ± 136  ± 592  ± 22.77  ± 0.214.84  ± 0.418
Kv4.2W362FAll cells0.68  ± 0.08−49 ± 128  ± 290  ± 23.54  ± 0.275.59  ± 0.2225
Phasic0.64  ± 0.142-160−47 ± 230  ± 72-16082  ± 33.63  ± 0.446.07  ± 0.336
Adapting0.76  ± 0.12−47 ± 126  ± 389  ± 23.47  ± 0.145.76  ± 0.2313
Tonic0.60  ± 0.092-160−53 ± 327  ± 22-16099  ± 42.90  ± 0.094.90  ± 0.206
Kv1.5W461F + Kv4.2W362FAll cells1.08  ± 0.172-160−44 ± 235  ± 488  ± 33.07  ± 0.19*5.11  ± 0.30*38
Phasic0.36  ± 0.04*−43 ± 438  ± 72-16090  ± 72.76  ± 0.242-1604.71  ± 0.312-1605
Adapting1.28  ± 0.17*−42 ± 225  ± 281  ± 63.75  ± 0.436.11  ± 0.6617
Tonic0.47  ± 0.042-160−47 ± 231  ± 594  ± 42.65  ± 0.244.54  ± 0.3916
  • F2-a All values are means ± SEM. Rin, Input resistance;Vm, resting membrane potential; APthresh, current required to reach the threshold for generating an action potential; APA, action potential amplitude.

  • Mean values are significantly different from those in wild-type cells at the

  • * p < 0.03 and

  • F2-160 p < 0.005 levels.