Association of Fecal Calprotectin with Motor and Nonmotor Features in Idiopathic Parkinson's Disease and Atypical Parkinsonism.
BACKGROUND AND OBJECTIVES Gut inflammation and microbiota dysregulation are increasingly implicated in Parkinson's disease (PD). Fecal calprotectin, a neutrophil-derived protein and marker of intestinal inflammation, may serve as a non-invasive indicator of gut-brain axis dysfunction in parkinsonian disorders. To evalu...