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不同频率电针镇痛效应的实验与临床研究 总被引:3,自引:0,他引:3
疼痛是一种与组织损伤或潜在的损伤相关的不愉快的主观感觉或情感体验,是人类特有的感觉。西药镇痛疗效差且易成瘾,而针刺因其镇痛效果好,无副作用而被广泛应用于临床。针刺治疗疼痛是祖国传统医学的重要特色之一。电针镇痛是在毫针针刺穴位获得针感后,在针柄上通以微量脉冲来兴奋穴位,以达到镇痛效果。大量的研究表明,电针不同的刺激频率对机体可以产生不同的镇痛效应。本文对不同频率电针镇痛效应的实验与临床研究作一综述。 相似文献
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<正> 在针刺镇痛原理的研究中,有资料表明,低频2赫电针引起的镇痛可被甲啡肽抗体对抗,高频100赫电针镇痛可被强啡肽抗体对抗,而变频2~15赫电针镇痛既可被甲啡肽抗体、也可被强啡肽抗体对抗, 相似文献
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目的:通过音乐电针与脉冲电针在行为学和神经电生理学两个方面镇痛作用的对比观察,证实音乐电针镇痛作用的优越性。方法:将大鼠分为脉冲电针组、音乐电针组和空白对照组,采用热甩尾反射和尾核、海马痛兴奋性和痛抑制性神经元细胞放电技术作为检测指标,探讨脉冲电针和音乐电针对腧穴兴奋性的调节,分析两种电针镇痛作用的效果。结果:音乐电针的镇痛作用明显优于脉冲电针。脉冲电针多次应用后,针刺效应作用出现逐渐减弱现象,表明机体穴位产生了电针耐受作用,而音乐电针则未出现针刺耐受。结论:音乐电针疗法具有克服电针耐受作用,从而能更好地发挥穴位功能。 相似文献
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电针不同经穴对不同性周期雌鼠黑质神经元放电的影响 总被引:1,自引:0,他引:1
探讨不同经穴的镇痛作用及针刺镇痛中多巴胺(DA)与性激素的关系。方法在去卵巢(OVX)大鼠和OVX加注雌二醇(OVX+E2)大鼠黑质(SN)神经元的自发放电和几种刺激的诱发反应之后,分别电针“肾俞”或“三阴交”两穴,以观察电针不同经、穴对上述反应的影响。结果电针“三阴交”后,两组自发放电均趋抑制;而电针“肾俞”后,两组放电均有不同程度激活。结论经、穴对同一SN单位的不同作用表明经、穴是相对独立存在的,各经、穴分别产生不同的调节机制;针刺在镇痛过程中可能对体内的激素水平、镇痛系统和递质系统产生了复杂的综合调节作用。 相似文献
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影响电针镇痛因素的实验研究概况 总被引:4,自引:0,他引:4
本文介绍了有关影响电针镇痛因素的实验研究概况。多数资料表明,电针刺激的强度、频率以及所选择的穴位和时辰不同可产生不同的镇痛作用;不同参数电针刺激的镇痛效应有不同的神经生理和神经生物化学机制。 相似文献
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Hsieh CL Kuo CC Chen YS Li TC Hsieh CT Lao CJ Lee CJ Li JG 《The American journal of Chinese medicine》2000,28(2):291-299
Although electroacupuncture (EA) has been widely used to treat pain, the optimal frequency of EA therapy remains unclear. The study sought to determine the effect of different EA frequencies in a Sprague-Dawley (SD) rat model of pain. Electric stimulation (ES) at frequencies of 2 Hz, 15 Hz or 100 Hz was applied to the ipsilateral or contralateral sciatic nerve of the injected hindpaw of SD rats. Formalin (50 microl, 5%) was subcutaneously injected into the plantar surface of the left hindpaw to induce a nociceptive response. Behavior, including licking and biting, was observed to have two distinct periods, an early phase during the first 5 mins and a late phase from 21-35 mins after injection. The total biting or licking count served as an Indicator of nociceptive response. Our results indicate that ES of the ipsilateral sciatic nerve at a frequency of 2 Hz or 15 Hz reduced the nociceptive responses in both the early and the late phases of the formalin test, whereas ES at 2 Hz had greater antinociceptive effect than ES at 15 Hz in the early phase. No similar analgesic effect in the early phase was observed for ES at 100 Hz. Both pretreatment with ES at 2 Hz and naloxone (3 mg/kg, s.c.) produced a greater antinociceptive response in the late phase than when ES at 2 Hz was delivered immediately after formalin administration. In addition, ES of the neck muscle or contralateral sciatic nerve at a frequency of 2 Hz also decreased licking and biting activity in both phases. The results of this study indicate that different analgesic mechanisms are involved in the response to ES at frequencies of 2 Hz, 15 Hz and 100 Hz, and that ES at 2 Hz has a greater analgesic effect on formalin-induced nociceptive response, especially when it is delivered prior to the onset of pain. The analgesic effect of ES may be mediated via a central origin in the supraspinal level. These findings suggest that 2 Hz may be a good frequency selection for clinical EA applications in analgesia, and that pretreatment with EA at 2 Hz may be an effective method to treat post-operative pain. 相似文献
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<正> 强啡肽(Dynorphin)是1979年Goldstain等发现的一种内源性阿片肽,它在离体豚鼠回肠标本上具有强烈的阿片样活性。近年来,对于它在体内不同中枢部位的痛觉调制作用以及在电针镇痛中所起的作用日益引起人们的兴趣。在脊髓内,已有资 相似文献
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This study examined whether or not the antinociceptive effect of 2- or 100-Hz electroacupuncture (EA) depends on the integrity of the retrosplenial cortex (RSC). Rats were taken for determination of tail-flick latency before and after injection of saline or 2% lidocaine (0.25 μl) into the retrosplenial cortex (RSC) bilaterally. Five minutes later, they were submitted to a 20-minute period of 2 Hz, 100 Hz, or sham EA at the Zusanli and Sanyinjiao acupoints bilaterally, and tail-flick latency was measured within 30 seconds after the end of stimulation and at 5-minute intervals for up to 30 minutes. EA at a frequency of either 2 or 100 Hz induced a strong and long-lasting inhibition of the tail-flick reflex in rats treated with saline (0.25 μl) injected into the RSC. The analgesia produced by 2-Hz EA lasted for a shorter time in lidocaine-treated rats. By contrast, RSC impairment did not change the analgesic effect of 100 Hz EA. The integrity of the RSC is implicated in the duration of analgesia induced by low-frequency EA but is not essential for the analgesic effects evoked by high-frequency EA. 相似文献
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In this review,we explored the dose-effect relationship of electroacupuncture(EA) analgesia and its stimulus parameters by searching articles on clinical and experimental research of EA analgesia in the past30 years.The impacts on the analgesic effects are discussed in terms of the pulse waveform,frequency,amplitude,wave width,and time effect,as well as parameter combinations,and the optimization of the EA parameters are summarized for the treatment of neuropathic,inflammatory,and cancer pains.I... 相似文献
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大鼠尾核头部微量注射纳洛酮和多巴胺对电针效应的影响 总被引:1,自引:0,他引:1
<正> 尾核不但参与躯体运动的调节,也和感觉机能有关。我们以往的工作表明,刺激大鼠尾核头部能够激活大多数中缝大核(NRM)神经元的自发放电和抑制其伤害性刺激诱发的反应;在尾核头部前区微量注射吗啡也能明显地抑制NRM神经元的伤害感受性反应;电针“足三里”穴激活NRM神经元自发放电和抑制伤害感受性反应的效应在电解损毁双侧尾核头部后明显降低。这些结果均表明,尾核头部参与对疼痛的调节和控制;其效应至少有一部分是通过脑 相似文献
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不同频率对关节炎大鼠痛反应及中枢γ—氨基丁酸和谷氨酸含量的影响 总被引:7,自引:1,他引:6
电针在急性关节炎动物模型上有镇痛作用,但不同电针参数的研究未见报道。本实验用100赫芝和15赫芝两种频率电针关节炎大鼠阳陵泉穴,可见低频电针镇痛效应优于高频电针;低频电针组脊髓谷氨酸含量低于高频电针组,γ-氨基丁酸含量在两组间无明显著差别。结果提示脊髓谷氨酸可能与不同频率电针的镇痛效应有密切关系。 相似文献
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镇痛效应对电灸调节荷瘤大鼠NK细胞活性的影响 总被引:1,自引:0,他引:1
为探讨针刺镇痛效应与针灸调节免疫作用间的相关性,以大鼠NK细胞活性变化为指标,通过荷瘤抑制大鼠免疫功能,观察电灸、电灸结合D-苯丙氨酸等对荷瘤大鼠和电针镇痛不同敏感状态荷瘤大鼠NK细胞活性的影响。结果显示:W256瘤株荷瘤大鼠NK细胞活性明显低于正常大鼠,电灸能明显改善其NK细胞活性。2Hz电针刺激大鼠“足三里”穴时,存在镇痛有效群(痛阈升高大鼠)和无效群(痛阈无变化大鼠)之别,电灸“关元”穴,能明显提高电针镇痛有效群荷瘤大鼠的NK细胞活性,但不能改善镇痛无效群荷痛大鼠的NK细胞活性,经加用吗啡分解酶抑制剂D-苯丙氨酸(250mg/kg,ip)后,镇痛有效群荷瘤大鼠的NK细胞活性有更大程度的提高,接近正常大鼠的水平。镇痛无效群荷瘤大鼠的NK细胞治性也有明显改善。单用同等剂量的D-苯丙氨酸并不影响NK细胞活性。本工作结果表明,电灸改善荷瘤大鼠NK细胞活性与大鼠本身对电针镇痛的敏感性有关,针刺镇痛效应可能影响其对免疫功能的调制作用。 相似文献
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目的:观察电针对重型颅脑损伤昏迷患者的促醒作用。方法:90例重型颅脑外伤患者随机分为对照组、电针组及纳络酮组,各30例。对照组予常规西医治疗;纳络酮组在常规西医治疗基础上加静脉滴注纳络酮;电针组在常规西医治疗基础上加用电针治疗,针刺百会、水沟、风府透哑门、合谷和涌泉,疏密波,频率1Hz/50Hz,强度1~4mA。各组治疗均每天1次,共治疗14d。观察各组患者在治疗前后及治疗结束后1个月的格拉斯哥昏迷评分(GCS)变化,比较各组患者在治疗结束后1个月格拉斯哥预后分级(GOS)及清醒率。结果:各组患者治疗后的GCS评分较治疗前均明显改善(P<0.05),且治疗结束1个月的GCS评分较治疗结束时继续提高(P<0.05)。纳络酮组及电针组在治疗结束及结束后1个月的GCS评分及GOS分级都明显优于对照组(均P<0.05),电针组与纳络酮组之间比较差异无统计学意义(P>0.05)。治疗结束后1个月,电针组及纳络酮组清醒率均优于对照组(P<0.05),电针组与纳络酮组之间差异无统计学意义(P>0.05)。结论:早期电针干预可提高重型颅脑损伤患者的GCS评分、GOS分级及清醒率,促进神经功能的恢复,对重型颅脑损伤昏迷患者具有促醒及改善预后的作用。 相似文献