Fig. 3From: Serum short-chain fatty acids and its correlation with motor and non-motor symptoms in Parkinson’s disease patientsThe effect of anti-Parkinson medications on peripheral venous concentrations of SCFAs in PD patients. A Serum propionic acid concentration was higher in PD patients taking trihexyphenidyl (n = 14) (P = 0.028). B Serum propionic acid concentration was higher in PD patients taking tizanidine (n = 16) (P = 0.032)Back to article page