Table 1.

Ratios of metabolites to dopamine contents in the striatum of synuclein null mutant mice

Genotype	α⁺/β⁺/γ⁺	α⁻/β⁺/γ⁺	α⁺/β⁻/γ⁺	α⁺/β⁺/γ⁻	α⁻/β⁺/γ⁻	α⁺/β⁻/γ⁻	α⁻/β⁻/γ⁺	α⁻/β⁻/γ⁻
DOPAC:DA
Average	0.1019	0.1044	0.0940	0.0981	0.1150	0.0893	0.0807^∗	0.1608^∗∗
SEM	0.0062	0.0046	0.0047	0.0072	0.0043	0.0051	0.0053	0.0091
HVA:DA
Average	0.0827	0.0814	0.0908	0.0832	0.0969	0.0911	0.0980	0.1090^∗
SEM	0.0136	0.0059	0.0033	0.0059	0.0058	0.0080	0.0060	0.0026

*p < 0.05 and **p < 0.01 between knockout and wild-type groups, Mann–Whitney test.

Key: DA, dopamine; DOPAC, 3,4-dihydroxyphenylacetic acid; HVA, homovanillic acid; SEM, standard error of the mean.