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Vol. 8, No. 2, 2000
Issue release date: August 2000
Section title: Original Paper
Neuroimmunomodulation 2000;8:83–90
(DOI:10.1159/000026457)

Central Monoamine Activity following Acute and Repeated Systemic Interleukin-2 Administration

Lacosta S. · Merali Z. · Anisman H.
aInstitute of Neuroscience, Carleton University, bSchool of Psychology and the Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: 8/14/2000

Number of Print Pages: 8
Number of Figures: 3
Number of Tables: 1

ISSN: 1021-7401 (Print)
eISSN: 1423-0216 (Online)

For additional information: http://www.karger.com/NIM

Abstract

Interleukin-2 (IL-2), together with other cytokines, may be involved in communication between the immune system and the CNS. Moreover, IL-2 alterations have been implicated in psychiatric disorders, and IL-2 immunotherapy may engender neuropsychiatric and cognitive disturbances. Given the presumed relationship between mood disturbances and monoamine activity, the present investigation was undertaken to determine the central monoamine alterations associated with acute and repeated systemic IL-2 administration in mice. Acute, systemic IL-2 (0.55–17.6 × 103 IU) did not influence plasma adrenocorticotropic hormone or corticosterone levels, but increased the utilization of norepinephrine (NE) within the paraventricular nucleus of the hypothalamus. In contrast to the effects of acute IL-2 administration, when administered repeatedly (for 7 days), IL-2 increased NE utilization within the median eminence plus arcuate nucleus and in the hippocampus, and to a lesser extent in the central amygdala and medial prefrontal cortex. These changes in utilization were accompanied by increased levels of NE within the median eminence plus arcuate nucleus and central amygdala, and reduced NE within the locus coeruleus. As well, serotonin (5-hydroxytryptamine; 5-HT) levels were altered within the hippocampus and prefrontal cortex, and dopamine turnover was reduced within the caudate and substantia nigra. The finding of altered central neurotransmitter activity needs to be considered in the context of the marked cognitive/memory impairments, as well as the neuropsychiatric symptoms, which are associated with IL-2 immunotherapy in humans.


  

Author Contacts

Hymie Anisman
Life Sciences Research Building, Carleton University
Ottawa, Ontario K1S 5B6 (Canada)
Tel. +1 613 520 2699, Fax +1 613 520 4052
E-Mail hanisman@ccs.carleton.ca

  

Article Information

Received: Received: August 30, 1999
Accepted: April 17, 2000
Number of Print Pages : 8
Number of Figures : 3, Number of Tables : 1, Number of References : 56

  

Publication Details

NeuroImmunoModulation
Official Journal of the International Society for Neuroimmunomodulation

Vol. 8, No. 2, Year 2000 (Cover Date: Released August 2000)

Journal Editor: S.M. McCann, Dallas, Tex.; J.M. Lipton, Dallas, Tex.
ISSN: 1021–7401 (print), 1423–0216 (Online)

For additional information: http://www.karger.ch/journals/nim


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: 8/14/2000

Number of Print Pages: 8
Number of Figures: 3
Number of Tables: 1

ISSN: 1021-7401 (Print)
eISSN: 1423-0216 (Online)

For additional information: http://www.karger.com/NIM


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