Abstract
Clinical effects, levels of 5-hydroxyindoleacetic acid (5-HIAA) and homovanillic acid (HVA) in cerebrospinal fluid (CSF) and lithium levels in serum were examined in 13 manic depressive patients acutely admitted because of a manic or hypomanic episode. Patients were examined before and 12 days after the beginning of lithium treatment. Manic scores were significantly reduced during treatment. The levels of 5-HIAA as well as HVA increased significantly during treatment. The HVA to 5-HIAA ratio was significantly reduced, indicating a more pronounced change in 5-HIAA than in HVA. The 5-HIAA and HVA levels before as well as after 12 days of treatment were significantly correlated. No significant correlation was found between manic scores and monoamine metabolites in CSF or between lithium level in serum and reduction of manic scores or elevation of monoamine metabolites in CSF in the relative small number of patients studied.
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