Table 1
Effect of A. arguta on brain cholinesterase activity in mice

Group	Dose	Cholinesterase activitya (μmol/h/mg protein)
Control	-	75.4 ± 4.6
Aβ (25-35)	15 nmol/animal	93.2 ± 6.3#
+ A. arguta	25 mg/kg	75.2 ± 4.2
+ A. arguta	50 mg/kg	75.5 ± 5.8
+ A. arguta	100 mg/kg	67.1 ± 4.8**

Results are expressed as the means ± S.E.M. of acetylthiocholine concentration hydrolyzed by cholinesterase preparation of brain homogenate for 1 h (n = 8 mice/group).
P<0.05 vs. control
P<0.01 vs. Aβ (25-35) alone.