Figure 2.

Antioxidant enzymes quantification through western analysis of controls (n = 9), iRBD (n = 7), and PD patients (n = 9). (a) Representative blots showing expression levels CAT, SOD2 and Gpx antioxidants, and β-actin loading control. Well ID is as follows: (1) control, (2) control, (3) iRBD, (4) iRBD, and (5) control. (b) Quantification of SOD2 levels. (c) Quantification of Gpx levels. AU, arbitrary units; SOD2, superoxide dismutase-2; Gpx, glutathione peroxidase; PD, Parkinson's disease; iRBD, idiopathic REM sleep behavior disorder.