Gastrointestinal Dysfunction in Parkinson's Disease.

Area of Science:

• Neuroscience
• Gastroenterology
• Microbiology

Background:

• Growing evidence links gastrointestinal (GI) dysfunction to Parkinson's disease (PD) over the last 30 years.
• Pathology in the enteric nervous system (ENS) suggests the GI tract may be an origin or entry point for PD.
• Gut microbiota dysbiosis is increasingly recognized in association with PD.

Purpose of the Study:

• To review current knowledge on GI pathophysiology and microbiome changes in Parkinson's disease.
• To explore how these GI changes evolve with disease progression.
• To discuss common GI problems in PD, their diagnostic evaluations, and treatment options.

Main Methods:

• Review of existing literature on Parkinson's disease, gastrointestinal dysfunction, and the gut microbiome.
• Focus on clinical manifestations, pathophysiology, and therapeutic strategies.
• Analysis of the relationship between GI changes and PD medication response.

Main Results:

• Clinical features of GI dysfunction in PD are well-identified.
• The GI tract and ENS are implicated in PD pathogenesis and pathology spread to the CNS via the vagus nerve.
• Changes in the gut microbiome are associated with PD.

Conclusions:

• GI dysfunction is a significant component of Parkinson's disease.
• Understanding GI pathophysiology and microbiome alterations is vital for managing PD and its treatment responses.
• Further research into GI-targeted diagnostics and therapeutics for PD is warranted.