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Article: Effects of a chronic compression of the dorsal root ganglion on voltage-gated Na+ and K+ currents in cutaneous afferent neurons.

Full Text (publisher's website) ; Article Metadata ; Article Data (extracted)
Tan ZY; Donnelly DF; LaMotte RH
J. Neurophysiol., 2006



TABLE 1.Membrane properties of control and CCD neurons
n Diameter, µm Cm, pF Vm, mV Rin, MΩ AP Rheobase, pA/pF AP VTH, mV AP Amplitude, mV AP Duration, ms AHP Amplitudo, mV AHP Duration, ms MS/non-MS
Control 31 38.5 ± 0.5 87.2 ± 5.8 –56.2 ± 1.5 122.5 ± 15.6 7.9 ± 1.4 –26.0 ± 1.9 86.5 ± 3.9 1.30 ± 0.15 17.1 ± 1.1 25.6 ± 4.9 5/21
CCD 24 38.7 ± 0.5 83.9 ± 5.8 –55.0 ± 1.6 94.3 ± 13.3 4.1 ± 0.7* –33.8 ± 1.9† 85.7 ± 4.0 1.18 ± 0.11 15.9 ± 1.4 30.9 ± 8.0 13/10‡
Values are mean ± SE; n is number of cells. Cm, cell capacitance; Vm, membrane potential; Rin, input resistance; AP rheobase, current threshold of action potential; VTH, voltage threshold; AHP, afterhyperpolarization; MS, number of cells discharging multiple (>2) spikes to current step at 2.5x rheobase; non-MS, number of cells discharging ≤2 spikes.

* P < 0.05,

† P < 0.01 (Student's t-test, significant differences between control and CCD);

‡ P < 0.01 (χ2 test, significant difference between control and CCD).


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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 cell diameter 38.5 ± 0.5 -- Data Table
Dorsal root ganglion cell cell capacitance (pF) 87.2 ± 5.8 -- Data Table
Dorsal root ganglion cell resting membrane potential (mV) -56.2 ± 1.5 -- Data Table
Dorsal root ganglion cell input resistance (MΩ) 122.5 ± 15.6 -- Data Table
Dorsal root ganglion cell rheobase (pA/pF) 7.9 ± 1.4 -- Data Table
Dorsal root ganglion cell spike threshold (mV) -26.0 ± 1.9 -- Data Table
Dorsal root ganglion cell spike amplitude (mV) 86.5 ± 3.9 -- Data Table
Dorsal root ganglion cell spike width (ms) 1.3 ± 0.15 -- Data Table
Dorsal root ganglion cell AHP amplitude (mV) 17.1 ± 1.1 -- Data Table
Dorsal root ganglion cell AHP duration (ms) 25.6 ± 4.9 -- Data Table