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Table 1 Membrane characteristics of TMJ innervating TG neurons of control (NS) and CFA-injected rats

From: Upregulation of cystathionine-β-synthetase expression contributes to inflammatory pain in rat temporomandibular joint

 

NS (n = 22)

CFA (n = 26)

p Value

Cell size (μm)

25.9 ± 0.75

24.6 ± 5.39

NS

Cm (pF)

29.16 ± 1.23

26.53 ± 1.09

NS

RP (mV)

-54.23 ± 1.07

-50.69 ± 0.81

< 0.01

Rin (MΩ)

635.5 ± 44.2

643.6 ± 21.8

NS

Rheobase (nA)

0.18 ± 0.02

0.11 ± 0.01

< 0.05

# of APs (2Xrheobase)

5.32 ± 0.79

8.27 ± 0.78

< 0.05

# of APs (3Xrheobase)

7.5 ± 1.10

12.58 ± 1.20

< 0.01

AP Threshold (mV)

-29.33 ± 1.77

-30.68 ± 1.42

NS

AP Amplitude (mV)

97.51 ± 2.34

87.35 ± 3.22

<0.05

AP Overshoot (mV)

41.24 ± 2.28

35.43 ± 2.84

NS

AP Duration (ms)

2.49 ± 0.17

2.05 ± 0.12

NS

# of APs (Ramp 100 pA)

1.32 ± 0.43

2.31 ± 0.76

NS

# of APs (Ramp 300 pA)

8.19 ± 1.65

15.15 ± 1.76

< 0.01

# of APs (Ramp 500 pA)

17.45 ± 2.87

29.15 ± 2.40

< 0.01

  1. Values are mean ± SEM, with sample size in parenthesis; Cm, membrane capacitance; RP, Resting membrane potential; AP, Action potential; Rin, Input resistance; NS, No significance; p values were determined by two sample t-Test or Mann-Whitney test where appropriate.