Clinical Trial: AADC/TDC in Advanced Parkinson's Disease
Study Status: COMPLETED
Recruit Status: COMPLETED
Condition: Parkinson Disease
Study Type: OBSERVATIONAL
Official Title: Aromatic L-amino Acid Decarboxylase Activity, Tyrosine Decarboxylase Activity and Gut Microbiome in Patients With Advanced Parkinson's Disease
Brief Summary:
Rationale: Many persons with Parkinson's disease (PD) develop a progressive resistance to levodopa, which is the pharmacological mainstay of PD treatment.Recently, two enzymatic pathways have been identified that could be (partially) responsible for this: 1) breakdown of levodopa by bacterial tyrosine decarboxylase (TDC), an enzyme which normally decarboxylates dietary tyrosine but which is also able to decarboxylate levodopa.Accumulation of bacterial TDC in the small intestine, such as in the context of…
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