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Tectum-to-Rectum t1_j23xayd wrote

Reply to comment by Turtle2727 in In Parkinson disease, why doesn't the adrenal gland fill the dopamine deficiency? by Actual-Pumpkin1567

Some do secrete dopamine. Dopamine is a metabolic precursor to epi and norepi. There are small amounts that get secreted, and certain rare subtypes of pheo will secrete dopamine. However, like everyone else said, dopamine isn’t able to cross the BBB so it’s not useful for treating PD.

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