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首页> 外文期刊>Neuron >A Role of Drd2 Hippocampal Neurons in Context-Dependent Food Intake
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A Role of Drd2 Hippocampal Neurons in Context-Dependent Food Intake

机译:DRD2海马神经元在上下文依赖食物摄入中的作用

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摘要

Associative learning of food cues that link location in space to food availability guides feeding behavior in mammals. However, the function of specific neurons that are elements of the higher-order, cognitive circuitry controlling feeding behavior is largely unexplored. Here, we report that hippocampal dopamine 2 receptor (hD2R) neurons are specifically activated by food and that both acute and chronic modulation of their activity reduces food intake in mice. Upstream projections from the lateral entorhinal cortex (LEC) to the hippocampus activate hD2R cells and can also decrease food intake. Finally, activation of hD2R neurons interferes with the encoding of a spatial memory linking food to a specific location via projections from the hippocampus to the septal area. Altogether these data describe a previously unidentified LEC > hippocampus > septal higher-order circuit that regulates feeding behavior.
机译:食品提示的联想学习,将空间中的位置与食物可用性引导哺乳动物的行为联系起来。 然而,特定神经元的功能,其是高阶认知电路控制馈电行为的元素在很大程度上是未开发的。 在这里,我们报告了海马多巴胺2受体(HD2R)神经元由食物特异性激活,并且急性和慢性调节它们的活性降低了小鼠的食物摄入量。 从横向梭形皮质(LEC)到海马激活HD2R细胞的上游突起,也可以降低食物摄入量。 最后,HD2R神经元的激活干扰了将食物连接到特定位置的空间存储器的编码通过从海马到隔间区域的突出部。 总而言之,这些数据描述了先前未识别的LEC>海马>调节喂养行为的隔膜高阶电路。

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