(-)-Huperzine A is an Acetylcholinesterase inhibitor and NMDA receptor antagonist with an IC50 of 126 μM for NMDA-induced current. Huperzine A, is a naturally occurring sesquiterpene alkaloid compound found in the plant firmoss Huperzia serrata. The IC (50) values of huperzine A were neither altered by changing the concentrations of glycine (2-0.2 μM) and pH (7.4-6.7) in the external solution, nor by addition of Zn (2+) (5 μM) and dithiothreitol (5 mM) to the external solution.
| Cell Experiment | |
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| Cell lines | |
| Preparation method | |
| Concentrations | |
| Incubation time | |
| Animal Experiment | |
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| Animal models | Male Sprague-Dawley rats |
| Formulation | Saline |
| Dosages | 0.1 mg/kg |
| Administration | Orally |
| Molecular Weight | 242.32 |
| Formula | C15H18N2O |
| CAS Number | 102518-79-6 |
| Solubility (25°C) | DMSO 10 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
[3] Xiao Sang, et al. Research on endophytic fungi for producing huperzine A on a large-scale
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