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The Basolateral Amygdala Is Essential for Rapid Escape: A Human and Rodent Study.
Cell ( IF 45.5 ) Pub Date : 2018-Oct-18 , DOI: 10.1016/j.cell.2018.09.028
David Terburg 1 , Diego Scheggia 2 , Rodrigo Triana Del Rio 2 , Floris Klumpers 3 , Alexandru Cristian Ciobanu 2 , Barak Morgan 4 , Estrella R Montoya 5 , Peter A Bos 5 , Gion Giobellina 2 , Erwin H van den Burg 2 , Beatrice de Gelder 6 , Dan J Stein 7 , Ron Stoop 2 , Jack van Honk 8
Affiliation  

Rodent research delineates how the basolateral amygdala (BLA) and central amygdala (CeA) control defensive behaviors, but translation of these findings to humans is needed. Here, we compare humans with natural-selective bilateral BLA lesions to rats with a chemogenetically silenced BLA. We find, across species, an essential role for the BLA in the selection of active escape over passive freezing during exposure to imminent yet escapable threat (Timm). In response to Timm, BLA-damaged humans showed increased startle potentiation and BLA-silenced rats demonstrated increased startle potentiation, freezing, and reduced escape behavior as compared to controls. Neuroimaging in humans suggested that the BLA reduces passive defensive responses by inhibiting the brainstem via the CeA. Indeed, Timm conditioning potentiated BLA projections onto an inhibitory CeA pathway, and pharmacological activation of this pathway rescued deficient Timm responses in BLA-silenced rats. Our data reveal how the BLA, via the CeA, adaptively regulates escape behavior from imminent threat and that this mechanism is evolutionary conserved across rodents and humans.

中文翻译:


基底外侧杏仁核对于快速逃脱至关重要:人类和啮齿动物研究。



啮齿动物研究描述了基底外侧杏仁核(BLA)和中央杏仁核(CeA)如何控制防御行为,但需要将这些发现转化为人类。在这里,我们将具有自然选择性双侧 BLA 损伤的人类与具有化学遗传学沉默 BLA 的大鼠进行比较。我们发现,在不同物种中,在面临迫在眉睫但可逃避的威胁时,BLA 在选择主动逃避而不是被动冻结方面发挥着重要作用 (T imm )。与对照组相比,BLA 损伤的人类对 T imm的反应表现出惊吓增强,而 BLA 沉默的大鼠则表现出惊吓增强、冻结和逃避行为减少。人类神经影像学表明,BLA 通过 CeA 抑制脑干,从而减少被动防御反应。事实上,T imm调节增强了 BLA 对抑制性 CeA 通路的投射,而该通路的药理激活可以挽救 BLA 沉默大鼠中缺陷的 T imm反应。我们的数据揭示了 BLA 如何通过 CeA 适应性调节逃避迫在眉睫的威胁的行为,并且这种机制在啮齿动物和人类中是进化保守的。
更新日期:2018-10-19
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