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Article: Early postnatal loss of heat sensitivity among cutaneous myelinated nociceptors in Swiss-Webster mice.

Full Text (publisher's website) ; Article Metadata ; Article Data (extracted)
Ye Y; Woodbury CJ
J. Neurophysiol., 2010


Table 2.

Postnatal physiological changes in AMH and AM nociceptors

Factor AMH AM
P2–P5 P6–P10 P2–P5 P6–P10
Average postnatal age, days 3.6–1.0; 40 8.2–1.6; 25 3.8–1.1; 19 8.3–1.5; 45
Conduction velocity, m/s 0.8 ± 0.2‡‡‡* (0.6–3.2; 40) 1.3 ± 0.6 (0.6–3.2; 25) 1.0 ± 0.4‡‡‡ (0.7–2.5; 19) 1.6 ± 0.8 (0.6–4.9; 45)
Mechanical threshold, mN# 0.71* (0.08–3.9; 36) 0.71 (0.08–5.7; 23) 1.13 (0.4–13.7; 16) 1.56 (0.08–19.5; 42)
Heat threshold, °C 49.7 ± 3.6 (42.2–55.2; 40) 48.8 ± 3.7 (38.0–53.3; 25)
Spike amplitude, mV 70.0 ± 10.1 (45.5–88.4; 25) 69.2 ± 8.2 (54.5–86.4; 20) 63.7 ± 12.0 (46.4–84.1; 11) 70.8 ± 10.4 (40.8–93.6; 35)
Spike overshoot, mV 16.5 ± 11.4* (−7.9–35.9; 25) 13.2 ± 12.8 (−8.4–37.3; 20) 7.2 ± 13.0‡ (−13.5–26.5; 11) 15.2 ± 11.1 (−10.3–32.6; 35)
Spike duration (D50), ms 1.7 ± 0.6‡ (0.8–3.0; 25) 1.3 ± 0.5 (0.6–2.1; 20) 1.5 ± 0.5 (1.0–2.3; 11) 1.5 ± 0.5 (0.5–3.0; 35)
AHP duration (AHP50), ms 5.9 ± 2.6‡ (2.1–12.5; 25) 4.3 ± 2.5 (1.3–10.1; 20) 5.6 ± 2.2 (3.1–9.2; 11) 6.7 ± 6.2 (2.2–35.1; 35)

  • Values represent means ± SD (range; n), except

  • ↵# (median, Mann–Whitney U test.

  • ↵‡ Difference (P < 0.05) within the same cell types (e.g., AMH or AM) across different age groups; ‡‡P < 0.01;

  • ↵‡‡‡ P < 0.001.

  • ↵* Difference (P < 0.05) across different cell types within the same age group.


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
DRG temperature cell spike threshold (mN#) 0.71 -- Data Table
DRG temperature cell spike threshold 49.7 ± 3.6 -- Data Table
DRG temperature cell spike amplitude (mV) 70.0 ± 10.1 70.0 (mV) Data Table
DRG temperature cell spike peak (mV) 16.5 ± 11.4 16.5 (mV) Data Table
DRG temperature cell spike width 1.7 ± 0.6 -- Data Table
DRG temperature cell AHP duration 5.9 ± 2.6 -- Data Table