Cerebrospinal Fluid Cytokines and Neurodegeneration-Associated Proteins in Parkinson's Disease.

CSF Markers and Clinical Variables Bivariate correlation analyses revealed a significant relationship between semantic fluency and α‐synuclein that withstood correction for multiple testing ( r = −0.53, P = 0.003) as well as nominally significant associations ( P < 0.05) between semantic fluency and IL‐6, ACE‐R and IL‐6, and age and both IFN‐γ and IL‐1β (Table S2 ).

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