Abstract：
:The antinociceptive effect of intraplantar (i.pl.) ICI 204448 ((R,S)-N-[2-(N-methyl-3,4-dichloro-phenylacetamido)-2-(3-carbox yph enyl)- ethyl]pyrrolidine hydrochloride)) (20, 30, 40 and 50 micrograms), a kappa-opioid receptor agonist which has limited access to the central nervous system, was studied in a well-established rat model of peripheral mononeuropathy produced by moderate constriction of the sciatic nerve. Vocalization thresholds to paw pressure were used as a nociceptive test. On the injected nerve-injured paw, ICI 204448 at 20 and 30 micrograms had no significant effect, but higher doses (40 micrograms) produced a significant antinociceptive effect, which plateaued at 50 micrograms. By contrast, no antinociceptive effect was observed on the contralateral paw. The effect of ICI 204448 (40 micrograms) was significantly antagonised by the specific kappa-opioid receptor antagonist nor-binaltorphimine (20 and 30 micrograms), when co-injected in the nerve-injured paw.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Keïta H,Kayser V,Guilbaud Gdoi
10.1016/0014-2999(95)00122-2subject
Has Abstractpub_date
1995-04-24 00:00:00pages
275-80issue
2-3eissn
0014-2999issn
1879-0712pii
0014-2999(95)00122-2journal_volume
277pub_type
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journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
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abstract：:The endogenous cannabinoid system has been noted for its therapeutic potential, as well as the psychoactivity of cannabinoids such as Δ9-tetrahydrocannabinol (THC). However, less is known about the psychoactivity of anandamide (AEA), an endocannabinoid ligand. Thus, the goals of this study were to establish AEA as a d...
journal_title：European journal of pharmacology
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