Mechanisms underlying fatigue: a voxel-based morphometric study of chronic fatigue syndrome.

Mechanisms underlying fatigue: a voxel-based morphometric study of chronic fatigue syndrome.
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DOI:
10.1186/1471-2377-4-14
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发表时间:
2004-10-04
期刊:
影响因子:
2.6
通讯作者:
Sadato N
Sadato N
中科院分区:
医学4区
文献类型:
--
作者:
Okada T;Tanaka M;Kuratsune H;Watanabe Y;Sadato N

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疲劳是一种触发休息的重要感觉,但其潜在的神经机制仍不清楚。长期强烈疲劳是慢性疲劳综合征的一种症状,被用作研究疲劳机制的模型。使用磁共振成像,我们对16名患者和49名年龄匹配的健康对照者进行了基于体素的形态测量。我们发现,慢性疲劳综合征患者的双侧前额叶皮质灰质体积减少。在这些区域内,右前额叶皮层的体积减少与受试者疲劳的严重程度有关。这些结果是一致的乙酰-L-肉碱摄取,这是慢性疲劳综合征的生化标志之一,在前额叶皮层的异常分布与以前的报告。因此,前额叶皮层可能是调节疲劳感觉的神经系统的重要组成部分。
Fatigue is a crucial sensation that triggers rest, yet its underlying neuronal mechanisms remain unclear. Intense long-term fatigue is a symptom of chronic fatigue syndrome, which is used as a model to study the mechanisms underlying fatigue. Using magnetic resonance imaging, we conducted voxel-based morphometry of 16 patients and 49 age-matched healthy control subjects. We found that patients with chronic fatigue syndrome had reduced gray-matter volume in the bilateral prefrontal cortex. Within these areas, the volume reduction in the right prefrontal cortex paralleled the severity of the fatigue of the subjects. These results are consistent with previous reports of an abnormal distribution of acetyl-L-carnitine uptake, which is one of the biochemical markers of chronic fatigue syndrome, in the prefrontal cortex. Thus, the prefrontal cortex might be an important element of the neural system that regulates sensations of fatigue.
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