Abstract
A methylene chloride soluble fraction of the fruits of Cudrania tricuspidata significantly inhibited the mouse brain monoamine oxidase (MAO). Three known prenylated isoflavones were isolated and identified by activity-guided fractionation. Gancaonin A (1), 4′-O- methylalpinumisoflavone (2), and alpinumisoflavone (3) inhibited MAO activity in a concentration-dependent manner with IC50 values of 19.4, 23.9, and 25.8 μM, respectively. Of these, gancaonin A (1) showed a selective and potent inhibitory effect against MAO-B (IC50 0.8 μM) than MAO-A (IC50 >800 μM). The kinetic analysis using Lineweaver-Burk plots indicated that gancaonin A (1) competitively inhibited MAO-B.
Original language | English |
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Pages (from-to) | 1324-1327 |
Number of pages | 4 |
Journal | Archives of pharmacal research |
Volume | 28 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2005 Dec |
Externally published | Yes |
Bibliographical note
Funding Information:This work was supported by a Chungbuk National University Grant in 2004. We are grateful to Korea Basic Science Institute for 1Hand 13C-NMR spectral measurements.
Keywords
- Cudrania tricuspidata
- Gancaonin A
- Monoamine oxidase inhibitor
- Moraceae
- Prenylated isoflavone
ASJC Scopus subject areas
- Molecular Medicine
- Drug Discovery
- Organic Chemistry