Abstract:
:The use of "multimodal" combination analgesic therapies or novel single molecules possessing multiple analgesic targets is becoming increasingly attractive. In previous experiments we showed that a substance P antagonist injected intrathecally potentiated the antinociceptive effects of potent opioid receptor agonist, biphalin. Based on examination of the biphalin structure-activity relationship, we designed and synthesized a novel chimeric peptide, termed AA501 (N'(Tyr-D-Ala-Gly-Phe), N"(Z-Trp) hydrazide, Z=benzyloxycarbonyl). AA501 consists of an opioid receptor agonist pharmacophore related to biphalin and a substance P receptor antagonist pharmacophore, both linked by a hydrazide bridge. The present study evaluates the ability of a novel chimeric peptide, AA501, to bind to opioid and substance P receptors and to produce antinociception in tail-flick and formalin tests, and in a neuropathic pain model when administered intrathecally to rats.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Bonney IM,Foran SE,Marchand JE,Lipkowski AW,Carr DBdoi
10.1016/j.ejphar.2004.02.023keywords:
subject
Has Abstractpub_date
2004-03-19 00:00:00pages
91-9issue
1-3eissn
0014-2999issn
1879-0712pii
S0014299904001578journal_volume
488pub_type
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