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. 2005 Oct;28(10):1989-91.
doi: 10.1248/bpb.28.1989.

Pharmacological study on the novel antinociceptive agent, a novel monoterpene alkaloid from Incarvillea sinensis

Yu-Ming Chi  1 , Motoyuki Nakamura, Toyokichi Yoshizawa, Xi-Ying Zhao, Wen-Mei Yan, Fumio Hashimoto, Junei Kinjo, Toshihiro Nohara, Shinobu Sakurada
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Free article

Pharmacological study on the novel antinociceptive agent, a novel monoterpene alkaloid from Incarvillea sinensis

Yu-Ming Chi et al. Biol Pharm Bull. 2005 Oct.
Free article

Abstract

To determine the antinociceptive mechanism of incarvillateine (INCA), the opiate antagonists nor-binaltorphimine (nor-BNI), beta-funaltrexamine (beta-FNA) and naltrindole (NTI) were pretreated prior to its injection in a formalin test. The antinociceptive effect of INCA was antagonized by nor-BNI (kappa-receptor antagonist) and beta-FNA (mu-receptor antagonist), while NTI (delta-receptor antagonist) did not influence its effect. Furthermore, the antinociceptive effect of INCA was blocked by theophylline (THEO), an adenosine-receptor antagonist. These results suggested that the antinociceptive effect arose from the activation of mu-, kappa-receptors and adenosine-receptor.

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