Research Article

Apolipoprotein D Concentration in Human Plasma during Aging and in Parkinson’s Disease: A Cross-Sectional Study

Figure 4

Plasma ApoD levels correlate with disease severity in PD. The linear regression analysis adjusted for age, gender, and PD medications reveal an increase in the plasmatic levels of ApoD, which is correlated with disease severity in PD (). Control data were included in the regression analysis as PD stage 0.