Table 3.

Amounts of 5-hydroxytryptophan (5-HTP) in rat brain (n = 6).

Group	5-HTP
	15 min	30 min	60 min	120 min
Normal group	641.72 ± 75.64a,b,c,*	690.12 ± 82.87a,b,c,**	619.87 ± 47.17a,b,c,*	624.36 ± 46.85a,b,c,*
Model group	639.78 ± 32.18a,b,c,*	693.42 ± 62.60a,b,c,**	619.63 ± 84.04a,b,c,*	652.40 ± 106.03a,b,*,c,**
Positive group	712.84 ± 58.08b,*	708.35 ± 42.79	677.16 ± 18.09a,**,b,c,*	683.96 ± 93.86a,b,**
LC–GE (1:3) group	779.35 ± 73.35d,e,*	781.29 ± 104.96d,e,**	764.06 ± 84.25d,e,*,f,**	793.75 ± 93.74d,e,*,f,**
LC–GE (2:3) group	852.53 ± 133.68d,e,f,*	792.94 ± 45.01d,e,**	817.82 ± 44.03d,e,f,*	798.53 ± 91.29d,e,*,f,**
LC–GE (4:3) group	799.25 ± 42.27d,e,*	780.20 ± 52.98d,e,**	804.72 ± 62.98d,e,f,*	772.80 ± 59.16d,*,e,f,**

Data are presented as (ng/g), mean ± standard deviation.

^*p < 0.01.

^**p < 0.05.

5-HTP = 5-hydroxytryptophan; LC–GE = Ligusticum chuanxiong–Gastrodia elata.

^aStatistically significant, other groups versus LC-GE (1:3) group.

^bStatistically significant, other groups versus LC-GE (2:3) group.

^cStatistically significant, other groups versus LC-GE (4:3) group.

^dStatistically significant, other groups versus normal group.

^eStatistically significant, other groups versus model group.

^FStatistically significant, other groups versus positive group.