Triterpene Compounds which are Effective on Improvement of Brain Function
a triterpene compound and brain technology, applied in the field of triterpene compounds, can solve the problems of cognitive impairment, social and economic loss, and serious social and economic problems, and achieve the effects of improving brain function, reducing the risk of death, and improving the effect of cognitive function
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[0033] The following specific examples are intended to be illustrative of the invention and should not be construed as limiting the scope of the invention as defined by appended claims.
example1
Passive Avoidance Test
[0034] To verify whether oleanolic acid, hederagenine and ursolic acid may improve in vivo the failure of memory associated with mild cognitive impairment and dementia, the passive avoidance test was carried out.
[0035] A shuttle box (50×15×40 cm) was used as an experimental device. The box was divided into two rooms by a guillotine door, where one of which was bright by illumination while the other was dark by black cloth, giving rise to two different illumination effects.
[0036] Firstly, mice were placed into a bright room, the bright room was kept lighted and the guillotine door was kept open. The mice entered the dark room in 20 sec in accordance with their negative phototaxis and the guillotine door was kept closed upon the entrance. The latency period in which a mouse enters the dark room from the bright room was measured in a manner described above. On the first day of the test, all mice were subject to a training trial for 20-sec latency period.
[0037]...
example2
Toxicity Test
[0042] Oleanolic acid, hederagenine and ursolic acid were orally administered seven times into ICR mice (body weight 25-30 g, 5 male mice per unit dose, BGI, Korea) in the unit dose of 2.0 g / kg, 680 mg / kg, 230 mg / kg and 75 mg / kg, respectively, for 1 week and on that day, mice treated were observed with naked eyes in an interval of 30 min. Furthermore, for 2 weeks after the administration, the death rate, general conditions and body weight of mice were examined and abnormality of organs was observed via autopsy.
[0043] It was elucidated that LD50 of oleanolic acid, hederagenine and ursolic acid was no less than 5.0 g / kg (LD10=750 mg / kg), all dosages gave rise to no disorders and the results of autopsy were not different from the control group.
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