- 著者
- / 岩本 真承 青木 俊二 田中 直美 田嶋 清子 山原 條二 高石 喜久 吉田 雅昭 富松 利明 玉井 洋進 Yoshin TAMAI
- 出版者
- The Pharmaceutical Society of Japan
- 雑誌
- Chemical and Pharmaceutical Bulletin (ISSN:00092363)
- 巻号頁・発行日
- vol.39, no.2, pp.397-399, 1991-02-25 (Released:2008-03-31)
- 参考文献数
- 9
- 被引用文献数
- 40 72
It has been reported that an acetone extract of ginger and its fractions have anti-5-HT (5-hydroxytryptamine; serotonin) effects. In the present study, guinea pig ileum, rat stomach fundus and rabbit aortic strips are used in order to determined the constituents of fraction 2 which are responsible for anti-5-HT effect and to examine their pharmacological properties.The analysis of fraction 2-3 indicated that galanolactone, a diterpenoid, is one of the active constituents. In guinea pig ileum, galanolactone inhibited contractile responses to 5-HT with a pIC50 value 4.93. pIC50 value of galanolactone against the response to 2-methyl-5-HT, a selective 5-HT3 agonist, in the presence of methysergide at 1×10-5M was 5.10. pIC50 values of ICS 205-930, a selective 5-HT3 antagonist, were 5.30 and 7.49, respectively. The concentration-response curve of 5-HT was shown as a biphasic curve and galanolactone caused a selective shift to the right of the second phase.In the same preparations, the pIC50 value of galanolactone and ICS 205-930 against the response to carbamylcholine (CCh) was 4.45 and 4.46.The inhibitory effect of galanolactone on the 5-HT response in the stomach fundus and aortic strips was less than that in the ileum.In addition, in the thoracic aorta precontracted with 50 mM K+, the relaxing effect of galanolactone was about 1/10 of that of papaverine.These results suggest that the anti-5-HT effect of galanolactone, a diterpenoid isolated from ginger, is related to antagonism of 5-HT3 receptors.
- 著者
- 富松 利明 松井 又夫 宇治 昭 加納 蓉子
- 出版者
- 公益社団法人 日本薬学会
- 雑誌
- YAKUGAKU ZASSHI (ISSN:00316903)
- 巻号頁・発行日
- vol.82, no.11, pp.1560-1563, 1962-11-25 (Released:2010-02-19)
- 参考文献数
- 5
- 被引用文献数
- 6
Experimental evidences suggest that the bases contained in Thalictrum thunbergii DC. (Japanese name “Akikaramatsu”) differs slightly by its habitat. In order to elucidate this point, the root of this plant collected in Nagano Prefecture was processed and a comparatively large amount of magnoflorine (I) was obtained, while its leaves and stems yielded takatonine (II). The leaves and stems of the same plant collected in Kochi Prefecture yielded magnoflorine (I) and berberine (III). These results are summarized in Table I.