Morphological analysis of the visceral sensory pathways to the leptin-melanocortin system in the feeding. related neural circuits of the hypothalamus

我们研究了大鼠下丘脑中瘦素-黑素皮质素系统的内脏感觉通路。本研究的结果如下：(1)增食欲素神经元受臂旁外侧核谷氨酸能神经元的兴奋影响，臂旁外侧核是内脏感觉信息的传递部位；(2)黑素浓缩激素神经元受参与嗅觉和内脏信息处理的皮质和基底内侧核谷氨酸能神经元的兴奋影响。

We examined the visceral sensory pathways to the leptin-melanocortin system in the rat hypothalamus. The results of the present study are as follows :(1) orexin neurons are under the excitatory influence of the glutamatergic neurons of the lateral parabrachial nucleus which is the relay site of visceral sensory information ;(2) melanin-concentrating hormone neurons are under the excitatory influence of the glutamatergic neurons of the cortical and basomedial nuclei which are involved in processing olfactory and visceral information.