Abstract
This paper reviews recent research on the contribution of the proinflammatory cytokine interleukin-1β (IL-1β) and the purine nucleoside adenosine in mediating behavioral depression and related symptoms of conservation-withdrawal in animal models of traumatic stress, major depression, and illness. Activation of brain IL-1β receptors appears to contribute to conservation-withdrawal by exacerbating the immediate impact of a stressor or by enhancing and prolonging the overall reaction. Moreover, brain cytokine signaling is capable of recruiting adenosine signaling at A2A, which directly mediates symptoms of behavioral depression. The adenosine receptors densely populate spiny GABAergic neurons in the striopallidal tract in the striatum and form part of an A2A/D2/mGLU receptor complex. Activation of these A2A receptors functionally uncouples dopamines excitatory motivation influence on ongoing behavior, leading to a state of conservation- withdrawal.
Keywords: ATP, Adenosine receptors, adenosine receptor antagonists, shock, Reserpine, DMSO
CNS & Neurological Disorders - Drug Targets
Title: Cytokine-Purine Interactions in Traumatic Stress, Behavioral Depression,and Sickness
Volume: 5 Issue: 5
Author(s): Thomas R. Minor, Qingjun Huang and Alexis E. Witt
Affiliation:
Keywords: ATP, Adenosine receptors, adenosine receptor antagonists, shock, Reserpine, DMSO
Abstract: This paper reviews recent research on the contribution of the proinflammatory cytokine interleukin-1β (IL-1β) and the purine nucleoside adenosine in mediating behavioral depression and related symptoms of conservation-withdrawal in animal models of traumatic stress, major depression, and illness. Activation of brain IL-1β receptors appears to contribute to conservation-withdrawal by exacerbating the immediate impact of a stressor or by enhancing and prolonging the overall reaction. Moreover, brain cytokine signaling is capable of recruiting adenosine signaling at A2A, which directly mediates symptoms of behavioral depression. The adenosine receptors densely populate spiny GABAergic neurons in the striopallidal tract in the striatum and form part of an A2A/D2/mGLU receptor complex. Activation of these A2A receptors functionally uncouples dopamines excitatory motivation influence on ongoing behavior, leading to a state of conservation- withdrawal.
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Cite this article as:
Minor R. Thomas, Huang Qingjun and Witt E. Alexis, Cytokine-Purine Interactions in Traumatic Stress, Behavioral Depression,and Sickness, CNS & Neurological Disorders - Drug Targets 2006; 5 (5) . https://dx.doi.org/10.2174/187152706778559282
DOI https://dx.doi.org/10.2174/187152706778559282 |
Print ISSN 1871-5273 |
Publisher Name Bentham Science Publisher |
Online ISSN 1996-3181 |
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