Synergistic Inhibition on Acetylcholinesterase by the Combination of Berberine and Palmatine Originally Isolated from Chinese Medicinal Herbs
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- 作者：Shinghung Mak (1) (2)
Wilson W. K. Luk (1)
Wei Cui (2) (3)
Shengquan Hu (2) (3)
Karl W. K. Tsim (1)
Yifan Han (2) (3) - 关键词：Acetylcholinesterase inhibitor ; Alkaloids ; Alzheimer’s disease ; Berberine ; Palmatine ; Synergism
- 刊名：Journal of Molecular Neuroscience
- 出版年：2014
- 出版时间：July 2014
- 年：2014
- 卷：53
- 期：3
- 页码：511-516
- 全文大小：463 KB
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Wilson W. K. Luk (1)
Wei Cui (2) (3)
Shengquan Hu (2) (3)
Karl W. K. Tsim (1)
Yifan Han (2) (3)
1. Division of Life Science, Center for Chinese Medicine and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay Road, Hong Kong, China
2. Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, SAR, China
3. State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation), The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China - ISSN：1559-1166
文摘
Alzheimer’s disease is a multi-factorial neurodegenerative disorder devastatingly affecting the aged population worldwide. Previous studies have shown that medicinal herbs used in traditional Chinese medicine might be benefit to Alzheimer’s disease patients. Berberine and palmatine, two isoquinoline alkaloids found in several medicinal herbs, were used for memory enhancement in China. In this study, the inhibitory effects of combined berberine and palmatine on acetylcholinesteras were evaluated using recombinant human acetylcholinesterase. Our results showed that the combination of berberine and palmatine inhibited acetylcholinesterase in a mixed competitive pattern. By the median-effect principle, the calculated combination index of the combination was less than 1, suggesting that berberine and plamatine inhibited acetylcholinesterase synergistically. Furthermore, the drug-reducing index of berberine and palmatine were 2.98 and 2.66, respectively. Taken together, the results showed that the combination of the two alkaloids might potentially be developed as a more effective therapeutic strategy for Alzheimer’s disease patients.