Limbic resposiveness to procaine in cocaine-addicted subjects

B. Adinoff, M. D. Devous, S. M. Best, M. S. George, D. Alexander, K. Payne

Research output: Contribution to journalArticle

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Abstract

Objective: The limbic system plays a critical role in motivation, emotional expression, and memory. The authors investigated whether a state of permanent limbic neuronal hyperexcitability, or sensitization, is present in cocaine addicts as a consequence of repeated cocaine use. Method: Single photon emission computed tomography (SPECT) of regional cerebral blood flow (rCBF) was used to compare the central nervous system response to the limbic stimulus procaine in 10 cocaine-dependent male patients and 10 healthy comparison male subjects. Results: The cocaine-addicted subjects demonstrated bilateral activation of the orbitofrontal cortex after the procaine challenge, whereas the comparison subjects showed activation of the anterior cingulate, bilateral insular, and right amygdalar regions. After receiving placebo, the cocaine-addicted subjects showed markedly lower rCBF in the bilateral orbitofrontal cortex than the comparison subjects. Conclusions: The pattern of hypoperfusion in the placebo state followed by heightened activation with procaine in the cocaine-addicted subjects is similar to the pattern of interictal hypoperfusion and ictal hyperperfusion that has been observed in subjects with epilepsy. The findings for the cocaine-addicted subjects may thus represent evidence of localized (orbitofrontal) sensitization.

Original languageEnglish (US)
Pages (from-to)390-398
Number of pages9
JournalAmerican Journal of Psychiatry
Volume158
Issue number3
DOIs
StatePublished - 2001

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Procaine
Cocaine
Cerebrovascular Circulation
Regional Blood Flow
Prefrontal Cortex
Placebos
Limbic System
Gyrus Cinguli
Single-Photon Emission-Computed Tomography
Motivation
Epilepsy
Central Nervous System
Stroke

ASJC Scopus subject areas

  • Psychiatry and Mental health

Cite this

Adinoff, B., Devous, M. D., Best, S. M., George, M. S., Alexander, D., & Payne, K. (2001). Limbic resposiveness to procaine in cocaine-addicted subjects. American Journal of Psychiatry, 158(3), 390-398. https://doi.org/10.1176/appi.ajp.158.3.390

Limbic resposiveness to procaine in cocaine-addicted subjects. / Adinoff, B.; Devous, M. D.; Best, S. M.; George, M. S.; Alexander, D.; Payne, K.

In: American Journal of Psychiatry, Vol. 158, No. 3, 2001, p. 390-398.

Research output: Contribution to journalArticle

Adinoff, B, Devous, MD, Best, SM, George, MS, Alexander, D & Payne, K 2001, 'Limbic resposiveness to procaine in cocaine-addicted subjects', American Journal of Psychiatry, vol. 158, no. 3, pp. 390-398. https://doi.org/10.1176/appi.ajp.158.3.390
Adinoff B, Devous MD, Best SM, George MS, Alexander D, Payne K. Limbic resposiveness to procaine in cocaine-addicted subjects. American Journal of Psychiatry. 2001;158(3):390-398. https://doi.org/10.1176/appi.ajp.158.3.390
Adinoff, B. ; Devous, M. D. ; Best, S. M. ; George, M. S. ; Alexander, D. ; Payne, K. / Limbic resposiveness to procaine in cocaine-addicted subjects. In: American Journal of Psychiatry. 2001 ; Vol. 158, No. 3. pp. 390-398.
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