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Distinct metabolomic and proteomic signatures in Parkinson's disease patients with REM sleep behavior disorder - PubMed

3 hours ago
  • #Parkinson's disease
  • #REM sleep behavior disorder
  • #metabolomics
  • RBD-PD patients show distinct metabolic reprogramming: shift from TCA cycle to glycolysis, dysregulated urea cycle, lipid remodeling, and increased inflammatory/immune responses.
  • Disturbances in RBD-PD include accumulation of gut microbiota-derived toxic aromatic amino acid catabolites, also observed in idiopathic RBD patients.
  • Gut microbial dysbiosis in RBD-PD and iRBD drives functional shifts away from fiber fermentation towards enhanced protein/amino acid degradation, linked to oxidative stress and neuroinflammation.
  • The study highlights gut microbiota-driven dysfunction as a key contributor to both iRBD and RBD-PD subtypes, clarifying molecular heterogeneity in Parkinson's disease.