Gut Microbiome Alterations in Parkinson’s Patients

Parameter

Experimental Findings

Microbial Dysbiosis Pattern

• Depletion of Anti-Inflammatory Taxa- Significant reduction in Short-Chain Fatty Acid (SCFA) producing bacteria (which maintain the gut mucosal barrier and modulate systemic immune response).
• Enrichment of Pro-Inflammatory Bacteria- Higher relative abundance of inflammatory bacterial strains promoting low-grade systemic inflammation.

Neurotransmitter Pathway Modulation

• Microbial metabolic functional profiling revealed significant alterations in pathways responsible for synthesizing and metabolizing Dopamine, GABA (gamma-aminobutyric acid), and Glutamate key chemical messengers regulating motor control and neural signaling.

Enteric Nervous System (ENS) Link

• Reinforces the hypothesis that pathological misfolding and aggregation of α-synuclein protein may originate in the gut's enteric nervous system prior to propagating to the brain's substantia nigra via the vagus nerve.