Metabolism of amino acids differs in the brains of Djungarian hamster (P. sungorus) and Roborovskii hamster (P. roborovskii)

SpringerPlus

Table 1 Concentrations of L- and D-amino acids in the brain of Djungarian and Roborovskii hamsters during light and dark periods

Amino acids	Djungarian hamster		Roborovskii hamster		Results of ANOVA
	Light	Dark	Light	Dark	Species	Time	Interaction
Essential amino acids
L-Isoleucine	63.5 ± 2.3	74.7 ± 3.9	69.2 ± 2.8	80.1 ± 3.8	NS	P < 0.01	NS
L-Leucine	172 ± 7	220 ± 12	202 ± 6	234 ± 14	NS	P < 0.001	NS
L-Histidine	636 ± 28	815 ± 44	697 ± 28	732 ± 23	NS	P < 0.01	P < 0.05
L-Tryptophan	2323 ± 149	2677 ± 176	2488 ± 156	2758 ± 324	NS	NS	NS
Nonessential amino acids
GABA	2708 ± 102	3881 ± 185	3107 ± 88	3634 ± 122	NS	P < 0.0001	P < 0.05
L-Aspartic acid	2463 ± 63	3045 ± 97	2637 ± 106	3183 ± 158	NS	P < 0.001	NS
D-Aspartic acid	13.9 ± 1.2	18.0 ± 0.8	14.6 ± 0.6	17.3 ± 0.5	NS	P < 0.05	NS
L-Glutamine	6882 ± 176	9264 ± 691	7248 ± 264	7696 ± 317	NS	P < 0.01	P < 0.05

Values are means ± S.E.M. in pmol/mg wet tissue; n = 5–7 in each group; NS: Not significant.