Effects of Electroacupuncture on Pain Threshold of Laboring Rats and the Expression of Norepinephrine Transporter and α2 Adrenergic Receptor in the Central Nervous System

Table 1

Comparison of pain threshold in the 6 groups (, unit S).

Group		Before treatment	After treatment
Control	20	6.94 ± 0.89	7.26 ± 1.09
Electroacupuncture Sanyinjiao	20	6.98 ± 1.06	18.26 ± 1.21
Electroacupuncture Hegu	20	6.86 ± 1.00	15.96 ± 1.52
Electroacupuncture Hegu + Sanyinjiao	20	7.31 ± 0.82	14.28 ± 0.97
Electroacupuncture Xuehai	20	6.77 ± 1.04	12.14 ± 1.30
Meperidine	20	7.01 ± 0.96	19.45 ± 1.84
		0.736	216.361

versus that before treatment; versus control group; versus meperidine group; versus Hegu (LI 4) group; versus Hegu (LI 4) and Sanyinjiao (SP 6) group; versus Xuehai (SP 10) group.