Organizational principles of amygdalar input-output neuronal circuits.

Organizational principles of amygdalar input-output neuronal circuits.
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杏仁核输入输出神经元回路的组织原理

DOI:
10.1038/s41380-021-01262-3
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发表时间:
2021-12
影响因子:
11
通讯作者:
Julius Zhu J
Julius Zhu J
中科院分区:
医学1区
文献类型:
--
作者:
Huang L;Chen Y;Jin S;Lin L;Duan S;Si K;Gong W;Julius Zhu J

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杏仁核是研究最多的大脑结构之一,它整合了全脑的异质输入,并管理多维输出,以控制对生存至关重要的各种行为,但杏仁核输入-输出神经元回路是如何组织的仍不清楚。使用一个简化的细胞类型和投影特异性逆行跨突触追踪技术,我们仔细检查了杏仁基底外侧复合体(BLA)的四个主要输出神经元群的全脑传入输入,分别投射到床纹终末核(BNST),腹侧海马(vHPC),内侧前额叶皮质(mPFC)和背侧核(NAc)。全脑输入输出定量分析揭示了BLA传出神经元接收具有不同输入权重和主导上下文表征的各种传入。值得注意的是,由BNST-,vHPC-,mPFC-和NAC投射BLA神经元接收的传入表现出几乎相同的起源和输入权重。这些结果表明,杏仁核BLA输入输出神经元回路的组织遵循输入依赖和输出独立的原则,理想的整合全脑范围内的不同传入刺激,以控制平行的传出动作。这些数据为改善焦虑症的虚拟现实暴露治疗提供了客观依据,并验证了简化的细胞类型和投射特异性逆行跨突触追踪方法。
The amygdala, one of the most studied brain structures, integrates brain-wide heterogeneous inputs and governs multidimensional outputs to control diverse behaviors central to survival, yet how amygdalar input-output neuronal circuits are organized remains unclear. Using a simplified cell-type- and projection-specific retrograde transsynaptic tracing technique, we scrutinized brain-wide afferent inputs of four major output neuronal groups in the amygdalar basolateral complex (BLA) that project to the bed nucleus of the stria terminals (BNST), ventral hippocampus (vHPC), medial prefrontal cortex (mPFC) and nucleus accumbens (NAc), respectively. Brain-wide input-output quantitative analysis unveils that BLA efferent neurons receive a diverse array of afferents with varied input weights and predominant contextual representation. Notably, the afferents received by BNST-, vHPC-, mPFC- and NAc-projecting BLA neurons exhibit virtually identical origins and input weights. These results indicate that the organization of amygdalar BLA input-output neuronal circuits follows the input-dependent and output-independent principles, ideal for integrating brain-wide diverse afferent stimuli to control parallel efferent actions. The data provide the objective basis for improving the virtual reality exposure therapy for anxiety disorders and validate the simplified cell-type- and projection-specific retrograde transsynaptic tracing method.
DOI: 10.1038/nn.3322
发表时间: 2013-03
影响因子: 25
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