• 분석과학
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• 제6권4호
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• pp.395-399
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• 1993

혈압 강하제로 쓰이는 생약인 조구등(Uncaria hooks)으로부터 네 가지 알칼로이드(corynoxeine, rhyncophylline, isocorynoxeine, isorhynchophylline)들을 분리하고 이들을 HPLC를 이용하여 정량하였다. 그 결과 조구등내 함량은 isocorynoxeine 0.21%, isorhynchophylline 0.16%, corynoxeine 0.28%, rhynchophylline 0.23%인 것으로 나타났다. 또한 corynoxeine과 isocorynoxeine, rhynchophylline과 isorhynchophylline은 열처리에 의하여 상호 변환하였으며 물로 열처리하여 추출하였을 때 corynoxeine과 rhynchophylline의 상대적인 양이 증가하였다.

• 동의생리병리학회지
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• 제18권4호
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• pp.1111-1119
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• 2004

In this study, we investigated that the effects of corynoxeine on the apoptosis by inducible CT105 in PC 12 cells and neuronpathogenic agent as CT105 confirmed with apoptosis, DNA fragmentation, neurite outgrowth and immunocytochemistry analysis This study examines whether corynoxeine have an anti-alzhmeimer agent by inhibition of apoptosis by CT105 and induces neurite outgrowth. Cytotoxicity was assessed in PC12 cell cultures by DNA fragmentation and measuring lactate dehydrogenase (LDH) in the culture media. The treatment of corynoxeine in exposure of cultures to CT105 and provided complete protection against cytotoxicity. CT105-induced cytotoxicity was blocked by apoptotsis, repaired by DNA fragmentation, neurite outgrowth and exposure to CT105 expression and regenerated with neurite outgrowth and immunocytochemistry by corynoxeine. These results indicate that in neuronal cell cultures, damage of T105, repaired excitotoxicity by corynoxeine and CT105-induced cytotoxicity is blocked primarily by the activation of anti-apoptosis.

• Natural Product Sciences
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• 제11권3호
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• pp.145-149
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• 2005

A methanol soluble extract from the dried hooks and stems of Uncaria rhynchophylla showed a strong inhibitory activity against monoamine oxidase in mouse brain. Using a bioassay-guided purification of this extract, a known ${\beta}-carboline$ type alkaloid, harman (1), was obtained as an active constituent. In addition, five known indole alkaloids, isocorynoxeine (2), isorhynchophylline (3), corynoxeine (4), cadambine (5), and $3{\alpha}-dihydrocadambine$ (6), were isolated and found to be weakly active or inactive.