No correlation between serotonin and its metabolite 5-HIAA in the cerebrospinal fluid and [11C]AZ10419369 binding measured with PET in healthy volunteers

• [(11) C]AZ10419369 is sensitive to pharmacologically enhanced endogenous serotonin levels. Twelve healthy volunteers underwent [(11) C]AZ10419369 PET and lumbar puncture. There were no correlations between [(11) C]AZ10419369 binding and concentrations of serotonin and its metabolite 5-HIAA in cerebrospinal fluid, suggesting that [(11) C]AZ10419369 brain binding does not reflect baseline serotonin levels in cerebrospinal fluid.

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