Genetic identification of a population of noradrenergic neurons implicated in attenuation of stress-related responses.

Genetic identification of a population of noradrenergic neurons implicated in attenuation of stress-related responses.
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DOI:
10.1038/s41380-018-0245-8
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发表时间:
2019-05
影响因子:
11
通讯作者:
Jensen P
Jensen P
中科院分区:
医学1区
文献类型:
--
作者:
Chen YW;Das M;Oyarzabal EA;Cheng Q;Plummer NW;Smith KG;Jones GK;Malawsky D;Yakel JL;Shih YI;Jensen P

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Noradrenergic signaling plays a well-established role in promoting the stress response. Here we identify a subpopulation of noradrenergic neurons, defined by developmental expression of Hoxb1, that has a unique role in modulating stress-related behavior. Using an intersectional chemogenetic strategy, in combination with behavioral and physiological analyses, we show that activation of Hoxb1-noradrenergic (Hoxb1-NE) neurons decreases anxiety-like behavior and promotes an active coping strategy in response to acute stressors. In addition, we use cerebral blood volume (CBV)-weighted functional magnetic resonance imaging to show that chemoactivation of Hoxb1-NE neurons results in reduced activity in stress-related brain regions, including the bed nucleus of the stria terminalis (BNST), amygdala, and locus coeruleus. Thus, the actions of Hoxb1-NE neurons are distinct from the well documented functions of the locus coeruleus in promoting the stress response, demonstrating that the noradrenergic system contains multiple functionally distinct subpopulations.
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