Role of vasoactive intestinal peptide and nitric oxide in the modulation of electroacupucture on gastric motility in stressed rats

Table 1 Effect of EA on gastric electroactivity of antrum under restrained-cold stress in rats (mean ± SD)

Groups	n	Frequency (cpm)	Amplitude (μv)
Control	20	3.07 ± 0.55 (0.18)	363.21 ± 42.41 (0.12)
Model	20	4.26 ± 0.58b (0.14)	428.54 ± 56.23b (0.13)
EA	20	3.41 ± 0.48d (0.14)	378.62 ± 24.38d (0.06)
Non-acupoint	20	4.12 ± 0.36 (0.09)	407.25 ± 65.42 (0.16)

^bP < 0.01 vs control group;

^dP < 0.01 vs model group. Numerical value in brackets is variation coefficient.

Table 2 Effect of EA on VIP and NO concentrations under restrained-cold stress in rats (Mean ± SD)

Groups	n	NO			VIP
		Plasma	Antrum	Bulb tissues	Plasma	Antrum	Bulb tissues
		(μmol·L-1)	(ng/mg)	(ng/mg)	(μmol/L)	(ng/mg)	(ng/mg)
Control	10	28.35 ± 1.32	45.23 ± 2.11	34.51 ± 3.24	8.80 ± 2.55	1.95 ± 0.62	0.48 ± 0.07
Model	10	19.24 ± 0.95b	28.01 ± 1.42b	23.48 ± 2.62 b	5.16 ± 1.58b	1.12 ± 0.46b	0.37 ± 0.05b
EA	10	25..36 ± 1.61d	44.51 ± 0.89d	31.72 ± 1.06 d	14.35 ± 3.47d	1.63 ± 0.59 a	0.64 ± 0.10d
Non-acupoint	10	20.13 ± 1.78	29.76 ± 1.14	28.67 ± 1.06	4.87 ± 1.48	1.09 ± 0.41	0.39 ± 0.05

^bP < 0.01 vs control group;

^aP < 0.05,

^dP < 0.01 vs model group.