Volume 47, Issue 4 pp. 921-928
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Changes in Local Cerebral Glucose Utilization and Dopamine Metabolism in the Rat Brain Following Acute Administration of Haloperidol

Masayoshi Kurachi M.D.

Corresponding Author

Masayoshi Kurachi M.D.

Department of Neuropsychiatry, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Toyama

Masayoshi Kurachi, M.D., Department of Neuropsychiatry, Faculty of Medicine, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-01, Japan.Search for more papers by this author
Shin-ichi Yasui M.D.

Shin-ichi Yasui M.D.

Department of Neuropsychiatry, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Toyama

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Ryoko Shibata M.D.

Ryoko Shibata M.D.

Department of Neuropsychiatry, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Toyama

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Masahiko Murata M.D.

Masahiko Murata M.D.

Department of Neuropsychiatry, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Toyama

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Hirohumi Hagino M.D.

Hirohumi Hagino M.D.

Department of Neuropsychiatry, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Toyama

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Yasuyuki Tanii M.D.

Yasuyuki Tanii M.D.

Department of Neuropsychiatry, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Toyama

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Kouichi Kurata M.D.

Kouichi Kurata M.D.

Department of Neuropsychiatry, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Toyama

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First published: December 1993
Citations: 1

Abstract

Abstract: The effects of acute administration of haloperidol on local cerebral glucose utilization (LCGU) in 26 discrete regions of the rat brain were examined by the quantitative autoradiographic [14C] 2-deoxy-D-glucose technique and compared with the changes in dopamine (DA) metabolism in 13 brain regions examined by a high performance liquid chromatographic assay. A moderate dose (0.25 mg/kg) of acute haloperidol significantly reduced LCGU in a few brain regions; a high dose (1.0 mg/kg) reduced LCGU in 11 regions including the prefrontal cortex, thalamus and other subcortical structures, but not in the caudate putamen or accumbens nucleus. However, the levels of DA metabolite in the caudate-putamen, accumbens nucleus, prefrontal cortex, and medial thalamus were strikingly elevated with both doses of haloperidol. Thus, the changes in LCGU did not parallel presynaptic DA metabolism in terms of direction or distribution, and they might represent mainly the activities of postsynaptic sites.

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