Am J Psychiatry:催产素可能降低社会威胁的过度敏感反应

2013-10-28 刘揆亮/翻译 医学论坛网

日前,《美国精神病学杂志》刊登了一篇名为《边缘性人格障碍女性中催产素与降低社会威胁过度敏感反应》的文章。作者通过研究发现,边缘性人格障碍患者在信息处理的早期反射阶段显示出对社会威胁的过度敏感。   边缘性人格障碍患者以情绪过激惹、应激水平增高、容易生气和敌意、冲动行为为特点。他们容易对模棱两可的面部表情发泄愤怒,对威胁性的社会线索产生增强、延长的反应,这与增强、延长的杏仁核反应有关。因为

日前,《美国精神病学杂志》刊登了一篇名为《边缘性人格障碍女性中催产素与降低社会威胁过度敏感反应》的文章。作者通过研究发现,边缘性人格障碍患者在信息处理的早期反射阶段显示出对社会威胁的过度敏感。

边缘性人格障碍患者以情绪过激惹、应激水平增高、容易生气和敌意、冲动行为为特点。他们容易对模棱两可的面部表情发泄愤怒,对威胁性的社会线索产生增强、延长的反应,这与增强、延长的杏仁核反应有关。因为经鼻给予神经肽催产素显示出改善面部识别,将注意力从负性社会信息转移开的作用,作者对边缘性人格障碍患者是否可从应用催产素中获益进行了研究。

作者采用一项随机、双盲、安慰剂对照设计的试验,对40名现经DSM-IV诊断为边缘性人格障碍的未用药的成年女性患者(根据激素分析排了2名患者)与41名健康女性按年龄、教育和IQ配对,经鼻给予26IU的催产素或安慰剂后参加45分钟的情绪分类任务。因变量为通过眼球描计测定的初始反向眼动的时程与数量、手工反应时程及杏仁核对于愤怒和恐惧的面部表情(与快乐表情相比较)的血氧水平依赖反应。

结果显示,与对照组相比,边缘性人格障碍患者对愤怒的面部的眼睛显示出更多、更迅速的初始固定改变,杏仁核对于愤怒表情的激活反应也更大、更迅速。这些异常行为和神经模式在给予催产素后正常化。

由此得出结论:边缘性人格障碍患者在信息处理的早期反射阶段显示出对社会威胁的过度敏感。催产素可能降低社会威胁的过度敏感反应,因而减少威胁驱动的反应性攻击行为增强的边缘性人格障碍或其它精神障碍中的愤怒和攻击性行为。

原文出处:

Bertsch K, Gamer M, Schmidt B, Schmidinger I, Walther S, Kästel T, Schnell K, Büchel C, Domes G, Herpertz SC.Oxytocin and reduction of social threat hypersensitivity in women with borderline personality disorder.Am J Psychiatry. 2013 Oct 1;170(10):1169-77. doi: 10.1176/appi.ajp.2013.13020263.

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    2013-10-30 zhanfl
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