不同脉冲波形电针对佐剂性关节炎大鼠的影响

目的:探讨电针治疗佐剂性关节炎(AA)最佳适宜的脉冲波形参数.方法:将40只Wistar大鼠随机分为5组,电针观察组分别采用不同脉冲波形电针对AA大鼠进行治疗,以痛阈、关节肿胀度和炎症局部组织中5-羟色胺(5-HT)、β内啡肽(β-EP)、亮脑啡肽(LEK)的含量为观察指标.结果:治疗后不同脉冲波形电针组痛阈高于模型组(P＜0.05,P＜0.01);电针组炎症局部肿胀度虽然高于正常组(P＜0.01),但较模型组为低(P＜0.05,P＜0.01);电针组炎症局部组织中5-HT含量低于模型组(P＜0.05,P＜0.01);与模型组相比,声电波电针有升高炎症局部组织中β-EP和LEK含量的作用(P＜0.01,P＜0.05),断续波电针有升高β-EP的作用(P＜0.05).结论:电针治疗AA最佳适宜的脉冲波形为声电波.

Analgesic effects of electroacupuncture of different pulse waveforms in the rat of adjuvant arthritis

OBJECTIVE: To explore the best pulse waveform of electroacupuncture for treatment of adjuvant arthritis (AA). METHODS: Forty Wistar rats were randomly divided into 5 groups. The electroacupuncture groups of AA were treated with different pulse waveforms of electroacupuncture, respectively. Pain threshold, swelling degrees of joint, and contents of 5-HT, beta-EP and LEK in local tissues of inflammation were observed. RESULTS: After the treatment, pain thresholds of the electroacupuncture groups with different pulse waveforms were higher than that of the model group (P < 0.05, P < 0.01); the local swelling degrees of inflammation in the electroacupuncture group were higher than that in the normal group (P < 0. 01), but was lower than that in the model group (P < 0.05, P < 0. 01); the contents of 5-HT in local tissues of inflammation in the electroacupuncture groups were lower than that in the model group (P < 0.05, P < 0.01); in comparison with the model group, the electroacupuncture of sound-electric wave increased the contents of beta-EP and LEK (P < 0.01, P < 0.05) and the electroacupuncture of intermittent wave increased the content of beta-EP in local tissues of inflammation (P < 0.05). CONCLUSION: Sound-electric wave is the best pulse waveform of electroacupuncture for treatment of adjuvant arthritis.