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Article: Capsaicin inhibits activation of voltage-gated sodium currents in capsaicin-sensitive trigeminal ganglion neurons.

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Liu L; Oortgiesen M; Li L; Simon SA
J. Neurophysiol., 2001


Table 1.

Properties of TG neurons

Type I Type II Type III Type IV
No. of cells 10 66 6 5
Cell diameter, μM 32.3 ± 7.2 30.2 ± 4.8 40.9 ± 4.9 34.9 ± 4.9
Cell capacitance, pF 37.9 ± 21.6 30.3 ± 19.1 68.1 ± 29.9 46.4 ± 20
AP amplitude, mV 113.2 ± 14.6 116.9 ± 0.8 114.6 ± 14.3 127.8 ± 10.5
Threshold, mV −11.6 ± 5.8 −13.2 ± 7.0 −27.0 ± 7.4 −17.6 ± 6.9
APD 50%, ms 5.8 ± 1.4 2.6 ± 0.8 0.8 ± 0.2 1.9 ± 1.2
Max rate of depolarization, mV/s 136.6 ± 109.5 163.9 ± 78.4 377.1 ± 141.1 283.9 ± 74.4
Max rate of repolarization, mV/s 24.6 ± 11.6 53.0 ± 9.8 155.8 ± 57.3 94.4 ± 59.4
Percent capsaicin-sensitive cells 60 76 0 0
  • Action potentials (APs) were classified following many of the characteristics outlined in Cardenas et al. (1995). The APs were analyzed at the smallest value of injected current in which their parameters did not markedly change. The AP amplitude was measured from the baseline (−60 mV) to the peak; the AP duration at half height (APD 50%) is the time corresponding to half the action potential amplitude. TG, trigeminal ganglion.


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Dorsal root ganglion cell Trigeminal ganglion Repetitive AP neuron cell diameter (μM) 34.9 ± 4.9 (5) -- Data Table
Dorsal root ganglion cell Trigeminal ganglion Long-duration AP neuron cell capacitance (pF) 37.9 ± 21.6 (10) 37.9 (pF) Data Table
Dorsal root ganglion cell Trigeminal ganglion Small AP duration neuron cell capacitance (pF) 30.3 ± 19.1 (66) 30.3 (pF) Data Table
Dorsal root ganglion cell Trigeminal ganglion Large soma diameter neuron cell capacitance (pF) 68.1 ± 29.9 (6) 68.1 (pF) Data Table
Dorsal root ganglion cell Trigeminal ganglion Repetitive AP neuron cell capacitance (pF) 46.4 ± 20.0 (5) 46.4 (pF) Data Table
Dorsal root ganglion cell Trigeminal ganglion Long-duration AP neuron spike amplitude (mV) 113.2 ± 14.6 (10) 113.2 (mV) Data Table
Dorsal root ganglion cell Trigeminal ganglion Small AP duration neuron spike amplitude (mV) 116.9 ± 0.8 (66) 116.9 (mV) Data Table
Dorsal root ganglion cell Trigeminal ganglion Large soma diameter neuron spike amplitude (mV) 114.6 ± 14.3 (6) 114.6 (mV) Data Table
Dorsal root ganglion cell Trigeminal ganglion Repetitive AP neuron spike amplitude (mV) 127.8 ± 10.5 (5) 127.8 (mV) Data Table
Dorsal root ganglion cell Trigeminal ganglion Long-duration AP neuron spike threshold (mV) -11.6 ± 5.8 (10) -11.6 (mV) Data Table
Dorsal root ganglion cell Trigeminal ganglion Small AP duration neuron spike threshold (mV) -13.2 ± 7.0 (66) -13.2 (mV) Data Table
Dorsal root ganglion cell Trigeminal ganglion Large soma diameter neuron spike threshold (mV) -27.0 ± 7.4 (6) -27.0 (mV) Data Table
Dorsal root ganglion cell Trigeminal ganglion Repetitive AP neuron spike threshold (mV) -17.6 ± 6.9 (5) -17.6 (mV) Data Table
Dorsal root ganglion cell Trigeminal ganglion Long-duration AP neuron spike half-width (ms) 5.8 ± 1.4 (10) 5.8 (ms) Data Table
Dorsal root ganglion cell Trigeminal ganglion Small AP duration neuron spike half-width (ms) 2.6 ± 0.8 (66) 2.6 (ms) Data Table
Dorsal root ganglion cell Trigeminal ganglion Large soma diameter neuron spike half-width (ms) 0.8 ± 0.2 (6) 0.8 (ms) Data Table
Dorsal root ganglion cell Trigeminal ganglion Repetitive AP neuron spike half-width (ms) 1.9 ± 1.2 (5) 1.9 (ms) Data Table
Dorsal root ganglion cell Trigeminal ganglion Long-duration AP neuron cell diameter (μM) 32.3 ± 7.2 (10) 32.3 (um) Data Table
Dorsal root ganglion cell Trigeminal ganglion Small AP duration neuron cell diameter (μM) 30.2 ± 4.8 (66) -- Data Table
Dorsal root ganglion cell Trigeminal ganglion Large soma diameter neuron cell diameter (μM) 40.9 ± 4.9 (6) -- Data Table