Fig. 6From: Comprehensive metabolic profiling of Parkinson’s disease by liquid chromatography-mass spectrometryMetabolic disturbances in PD. a Alterations in PUFA metabolism. b. Alterations in bile acid synthesis pathway. The red frame indicates cytotoxic bile acid, the green frame indicates neuroprotective bile acid. c The proteolytic metabolism products were increased in PD. d Alterations in tryptophan metabolismBack to article page