Antinociceptive effects of bethanechol or dimethylphenylpiperazinium in models of phasic or incisional pain in rats

Antinociceptive effects of bethanechol or dimethylphenylpiperazinium in models of phasic or incisional pain in rats
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氨甲酰胆碱或二甲基苯基哌嗪在大鼠阶段性疼痛或切口痛模型中的镇痛作用

DOI:
10.1016/j.brainres.2004.05.085
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发表时间:
2004
期刊:
影响因子:
2.9
通讯作者:
Daniel K. Segalla
Daniel K. Segalla
中科院分区:
医学3区
文献类型:
--
作者:
W. A. Prado;Daniel K. Segalla

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毒蕈碱或烟碱激动剂产生抗伤害感受的机制一直是几项研究的主题。在本研究中,我们使用鞘内给药的药物,以表明,毒蕈碱或烟碱激动剂,如氨甲酰胆碱(BCh)和二甲基苯基哌嗪(DM),分别剂量依赖性地增加甩尾潜伏期,并减少由手术切口进行足底方面的后爪产生的疼痛。在这两个测试中的BCh的影响被抑制由以前的鞘内注射阿托品,但不是美加明(毒蕈碱和烟碱拮抗剂,分别)。美加明在两项试验中均显著降低了DM的作用。阿托品可显著降低DM对小鼠甩尾反应的影响,并抑制DM对切口疼痛的作用。鞘内注射半胆碱-3(HC-3),一种胆碱转运蛋白的可逆抑制剂,在甩尾试验中没有改变BCh的作用,但对BCh对抗切口疼痛的作用产生了非显著性降低。相比之下,HC-3在甩尾试验中对DM的作用产生非显著降低,但完全抑制DM对切口疼痛的作用。因此,BCh诱导的抗伤害性感受依赖于直接激活毒蕈碱受体,而DM诱导的抗伤害性感受导致药物与烟碱受体相互作用,以激活从内源性脊髓胆碱能末梢进一步释放乙酰胆碱。DM释放的乙酰胆碱又通过激活毒蕈碱受体诱导抗伤害感受。
The mechanism by which muscarinic or nicotinic agonists produce antinociception has been the subject of several studies. In the present investigation, we used intrathecal administration of drugs to rats to show that muscarinic or nicotinic agonists such as bethanechol (BCh) and dimethylphenylpiperazinium (DM), respectively, dose-dependently increased the tail flick latency and reduced the pain produced by a surgical incision performed on the plantar aspect of a hind paw. The effects of BCh in both tests were inhibited by the previous intrathecal administration of atropine, but not mecamylamine (muscarinic and nicotinic antagonists, respectively). Mecamylamine significantly reduced the effects of DM in both tests. Atropine significantly reduced the effect of DM in the tail flick test and inhibited the effect of DM against the incisional pain. Intrathecal hemicholinium-3 (HC-3), a reversible inhibitor of choline transporter, did not change the effect of BCh in the tail flick test but produced a non-significant reduction of the effect of BCh against incisional pain. In contrast, HC-3 produced a non-significant reduction of the effect of DM in the tail flick test but fully inhibited the effect of DM against incisional pain. Therefore, the BCh-induced antinociception depends on a direct activation of muscarinic receptors, whereas DM-induced antinociception results in drug interaction with nicotinic receptors to activate the further release of acetylcholine from intrinsic spinal cholinergic terminals. The acetylcholine released by DM in turn induces antinociception via activation of muscarinic receptors.
DOI: 10.1046/j.1529-8027.2002.02026_26.x
发表时间: 2002-02
影响因子: 2.5
作者:
EM Pogatzki;GF Gebhart;Tj. Brennan
通讯作者: EM Pogatzki;GF Gebhart;Tj. Brennan
DOI: 10.1016/s0024-3205(98)00600-6
发表时间: 1999-01-08
期刊: LIFE SCIENCES
影响因子: 6.1
作者:
Eisenach, JC
通讯作者: Eisenach, JC
胆碱能镇痛的性别差异II:两种异常性疼痛模型的不同机制。
DOI: 10.1097/00000542-199911000-00039
发表时间: 1999
期刊: Anesthesiology
影响因子: 8.8
作者:
Lavand'homme,PM;Eisenach,JC
通讯作者: Eisenach,JC
DOI: 10.1016/0014-2999(85)90474-1
发表时间: 1985
影响因子: 5
作者:
Yaksh,TL;Dirksen,R;Harty,GJ
通讯作者: Harty,GJ
对鞘内施用烟碱类药物的心血管和行为反应。
DOI: --
发表时间: 1994
期刊: The Journal of pharmacology and experimental therapeutics
影响因子: --
作者:
Khan,IM;Taylor,P;Yaksh,TL
通讯作者: Yaksh,TL