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First received: September 09, 2022

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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