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European journal of pharmacology

Anandamide transport inhibition by the vanilloid agonist olvanil.


PMID 9920187

Abstract

The structural similarities between the anandamide transport inhibitor N-(4-hydroxyphenyl)-arachidonylamide (AM404) and the synthetic vanilloid agonist olvanil [(N-vanillyl)-9-oleamide], prompted us to investigate the possibility that olvanil may interfere with anandamide transport. The intracellular accumulation of [3H]anandamide by human astrocytoma cells was prevented by olvanil with a Ki value of 14.1+/-7.1 microM. By contrast, capsaicin [(8-methyl-N-vanillyl)-6-noneamide], a plant-derived vanilloid agonist, and capsazepine (N-[2-(4-chlorophenyl)ethyl]-1,3,4,5-tetrahydro-7,8-dihydroxy-2 H-2-benzazepine-2-carbothioamide), a vanilloid antagonist, had no such effect (Ki > 100 microM). These results indicate that, although less potent than AM404 (Ki 2.1+/-0.2 microM), olvanil may reduce anandamide clearance at concentrations similar to those needed for vanilloid receptor activation.

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O0257
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C26H43NO3