Pharmacopsychiatry 2006; 39(3): 100-108
DOI: 10.1055/s-2006-941483
Original Paper
© Georg Thieme Verlag KG Stuttgart · New York

Catecholamine Response to Methamphetamine is Related to Glucocorticoid Levels but not to Pleasurable Subjective Response

D. S. Harris1 , V. I. Reus2 , O. Wolkowitz2 , P. Jacob2  III , E. T. Everhart2 , M. Wilson2 , J. E. Mendelson2 , R. T. Jones2
  • 1Department of Psychiatry and Tri-State Tobacco & Alcohol Research Center, University of Cincinnati and Cincinnati VA Medical Center, Cincinnati, USA
  • 2Langley Porter Psychiatric Institute, Department of Psychiatry, University of California, San Francisco, USA
Further Information

Publication History

Received: 4.10.2005 Revised: 16.2.2006

Accepted: 13.3.2006

Publication Date:
23 May 2006 (online)

Preview

Introduction: Corticosteroids may modulate addiction. We previously described subjective, physiological, and endocrine effects of 0.5 mg/kg of intravenous methamphetamine after augmenting cortisol level with hydrocortisone or blocking cortisol response with the corticosteroid synthesis inhibitor metyrapone in a double-blind, balanced crossover study. Although the pharmacologic manipulations produced the expected hormonal changes, pleasurable subjective effects of methamphetamine were unchanged. Metyrapone was followed by frequent premature ventricular complexes (PVCs) in two subjects during methamphetamine administration. In order to better understand these results, we examined changes in two plasma catecholamine metabolites, homovanillic acid (HVA) and 3-methoxy-4-hydroxyphenylglycol (MHPG), and their relationship to the previously reported hormonal changes and physiological and subjective responses. Methods: Plasma from 10 methamphetamine subjects from the earlier study was assayed for HVA and MHPG by high performance liquid chromatography. Results: HVA levels were greater after hydrocortisone or metyrapone pretreatment compared to placebo, and MHPG levels were greater after metyrapone pretreatment. Hydrocortisone pretreatment diminished HVA and MHPG increases after methamphetamine (perhaps explaining the lack of expected increase in pleasurable effects), but metyrapone did not. HVA and MHPG concentrations were not correlated with pleasurable drug effects but were inversely related to reports of ”Bad Drug Effect.” Increases in MHPG and DHEA concentrations were positively correlated. Metyrapone pre-treated subjects with PVCs had lower HVA and MHPG concentrations. Conclusion: Raising cortisol concentration and blocking cortisol synthesis did not produce opposite effects, perhaps because of metyrapone’s effect on the hypothalamic-pituitary-adrenal axis, its stress-like effects, and its effects on neurosteroids.

References

Debra S. Harris, MD

Associate Professor of Clinical Psychiatry

Dept. of Psychiatry

University of Cincinnati and Cincinnati VA Medical Center

3200 Vine St.

Cincinnati, OH 45220

USA

Phone: +1 513 861 3100

Fax: +1 513 489 6046

Email: debra.harris4@va.gov