Plasma Prolidase Activity and Oxidative Stress in Patients with Parkinson’s Disease

Table 2

Representation of PPA, TOS, TAS, and OSI with duration of disease in patients with PD.

Duration of Parkinson’s disease	(240)	PPA (mmol min^−1 L^−1)	TOS (mol H2O2 Eq/L)	TAS (mmol Trolox Eq/L)	OSI (arbitrary unit)
≤2 years ( = 0.5 to 2.0 years)	140	43.13 ± 29.89	14.71 ± 2.39	1.98 ± 0.38	7.92 ± 2.53
>2 years ( = 2.5 to 14.0 years)	100	38.44 ± 25.43	19.34 ± 2.33	1.27 ± 0.16	15.73 ± 4.14
value			<0.001	<0.001	<0.001

Significant (Sig.) value less than 0.05 was considered. Data are mean ± standard deviation, = range, = value according to Student’s -test, and = value according to Mann-Whitney test.