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
中科院分区:
文献类型:
--
作者:
W. A. Prado;Daniel K. Segalla
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.
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影响因子:
2.5
作者:
EM Pogatzki;GF Gebhart;Tj. Brennan
通讯作者:
EM Pogatzki;GF Gebhart;Tj. Brennan
影响因子:
6.1
作者:
Eisenach, JC
通讯作者:
Eisenach, JC
影响因子:
8.8
作者:
Lavand'homme,PM;Eisenach,JC
通讯作者:
Eisenach,JC
影响因子:
5
作者:
Yaksh,TL;Dirksen,R;Harty,GJ
通讯作者:
Harty,GJ
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