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Studies With Positron Emission Tomography and [Fluorine 18]Fluorodeoxyglucose

Edythe D. London, PhD; Emmanuel P. M. Broussolle, MD; Jonathan M. Links, PhD; Dean F. Wong, MD; Nicola G. Cascella, MD; Robert F. Dannals, PhD; Motoki Sano, MD, PhD; Ronald Herning, PhD; Frederick R. Snyder, MA; Lillian R. Rippetoe, RN; Thomas J. K. Toung, MD; Jerome H. Jaffe, MD; Henry N. Wagner, Jr, MD

Arch Gen Psychiatry. 1990;47(1):73-81.

Abstract
• Morphine sulfate effects (30 mg, intramuscularly) on cerebral glucose utilization and subjective self-reports were examined in 12 polydrug abusers by positron emission tomography and [fluorine 18]fluorodeoxyglucose in a double-blind placebocontrolled crossover study. During testing, subjects sat with eyes covered, listening to white noise and "beep" prompts. Morphine significantly reduced glucose utilization by 10% in whole brain and by about 5% to 15% in telencephalic areas and the cerebellar cortex, assuming no contribution of hypercapnia. When the contribution of Paco₂ (45 minutes after morphine was administered) was partialled out, significant morphine-induced reductions persisted in whole brain and six cortical areas. Irrespective of morphine, left-greater-than-right asymmetry occurred in the temporal cortex, and an interaction between hemisphere and drug was noted in the postcentral gyrus. In most cases, effects on glucose utilization were not significantly related to measures of euphoria.

Author Affiliations
From the Addiction Research Center, National Institute on Drug Abuse (Drs London, Broussolle, Cascella, Sano, Herning, and Jaffe, Ms Rippetoe, and Mr Snyder), and Departments of Radiology (Drs Links, Wong, Dannals, and Wagner) and Anesthesiology (Dr Toung), The Johns Hopkins Medical Institutions, Baltimore, Md.

Footnotes
Accepted for publication April 7, 1989.

Presented in abstract form at the 17th Annual Meeting of the Society for Neuroscience, New Orleans, La, November 19, 1987; 140th Annual Meeting of the American Psychiatric Association, Chicago, Ill, May 9-15, 1987; and 34th Annual Meeting of Society of Nuclear Medicine, Toronto, Canada, June 2-5, 1987.

Reprint requests to Addiction Research Center, National Institute on Drug Abuse, PO Box 5180, Baltimore, MD 21224 (Dr London).

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