Stress and dopamine: implications for the pathophysiology of chronic widespread pain

被引:100
作者
Wood, PB [1 ]
机构
[1] LSU, Hlth Sci Ctr, Dept Family Med, Shreveport, LA 71103 USA
关键词
D O I
10.1016/j.mehy.2003.10.013
中图分类号
R-3 [医学研究方法]; R3 [基础医学];
学科分类号
1001 ;
摘要
Fibromyalgia has been called a "stress- related disorder" due to the onset and exacerbation of symptoms in the context of stressful events. Evidence suggests that inhibition of tonic pain is mediated by activation of mesolimbic dopamine neurons, arising from the cell bodies of the ventral tegmental area and projecting to the nucleus accumbens. This pain-suppression system is activated by acute stress, via the release of endogenous opioids and substance P within the ventral tegmental area. However, prolonged exposure to unavoidable stress produces both reduction of dopamine output in the nucleus accumbens and development of persistent hyperatgesia. It is proposed that a stress-related reduction of dopaminergic tone within the nucleus accumbens contributes to the development of hyperalgesia in the context of chronic stress and thus plays a rote in the pathogenesis of fibromyalgia. A stress-related dysfunction of mesolimbic doparninergic activity might serve as the basis for other fibromyalgia-associated phenomena as well. (C) 2004 Elsevier B.V. All right reserved.
引用
收藏
页码:420 / 424
页数:5
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