Neurochemical variables in delusional depression.

@article{Lykouras1988NeurochemicalVI,
  title={Neurochemical variables in delusional depression.},
  author={E. Lykouras and Manolis Markianos and Dimitris Malliaras and C. Stefanis},
  journal={The American journal of psychiatry},
  year={1988},
  volume={145 2},
  pages={
          214-7
        }
}
The authors assayed plasma dopamine beta-hydroxylase activity, platelet monoamine oxidase (MAO) activity, plasma prolactin, the urinary monoamine metabolites 3-methoxy-4-hydroxyphenylglycol (MHPG), 5-hydroxyindoleacetic acid (5-HIAA), and homovanillic acid (HVA), and urinary cAMP from 18 delusional and 22 nondelusional depressed inpatients. No significant differences between the two groups were found.