Association of Enterococcus faecalis and tyrosine decarboxylase gene levels with levodopa pharmacokinetics in Parkinson's disease.

Similarly, relative tyrDC gene abundance was lower in the high levodopa AUC group [−21.29 (−23.51 to −20.03)] than in the low levodopa AUC group [−18.61 (−20.58 to −17.11)], although this difference did not reach statistical significance ( p = 0.067; Fig. 3d ).

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