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Article: A cold- and menthol-activated current in rat dorsal root ganglion neurones: properties and role in cold transduction.

Full Text (publisher's website) ; Article Metadata ; Article Data (extracted)
Reid G; Babes A; Pluteanu F
J. Physiol. (Lond.), 2002


Table 1

Characteristics of neurones sesitive and insensitive to cold, 100 μm (-) and 0.5 μm capaicin

Cold-sensitive n Cold-insensitive n p*
Diameter (all neurones) (μm) 19.7 ± 3.9 331 24.7 ± 6.7 1106 <0.001
Diameter (neurones treated with menthold and/or capsaicin) (μm) 21.4 ± 5.6 39 25.9 ± 6.7 241 <0.001
Diameter (capsaicin-insensitive only) (μm) 21.5 ± 4.9 18 24.6 ± 5.8 119 0.005
Diameter (capsaicin-insensitive only) (μm) 21.5 ± 5.4** 20 — — —
Number of menthol-sensitive neurones 27/38(71%) — 5/254(2%) — <0.001 (X2 text)
Number of capaicin-sensitive neurones 19/39(49%) — 123/236(52%) — n.s. (X2 test)
ΔFIFO 0.219 ± 0.331 39 0.278 ± 0.332 236 n.s
Menthol-sensitive Menthol-insensitive
Cold threshold (cold-sensitive only) (°C) 30.4 ± 2.1 27 25.6 ± 2.9 11 <0.001
Capasaicin-sensitive Capsaicin-insensitive
Cold threshold (cold-sensitive only) (°C) 27.8 ± 3.1 19 30.6 ± 27 20 <0.001

  • ↵* student's unpaired t test unlese stated.

  • ↵** P = 0.56 vs. cold- and capsaicin-sensitive neurones.


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
DRG temperature cell cell diameter 21.5 ± 4.9 21.5 (um) Data Table
DRG temperature cell cell diameter 19.7 ± 3.9 19.7 (um) Data Table
DRG temperature cell cell diameter 21.5 ± 5.4 21.5 (um) Data Table
DRG temperature cell cell diameter 21.4 ± 5.6 21.4 (um) Data Table