Somatostatin and corticotrophin releasing hormone cell types are a major source of descending input from the forebrain to the parabrachial nucleus in mice.

Somatostatin and corticotrophin releasing hormone cell types are a major source of descending input from the forebrain to the parabrachial nucleus in mice.
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生长抑素和促肾上腺皮质激素释放激素细胞类型是小鼠从前脑到臂旁核下降输入的主要来源。

DOI:
10.1093/chemse/bju038
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发表时间:
2014
期刊:
影响因子:
3.5
通讯作者:
Lundy,Robert
Lundy,Robert
中科院分区:
心理学4区
文献类型:
--
作者:
Magableh,Ali;Lundy,Robert

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脑桥臂旁核(PBN)接收来自高阶前脑区域的大量下降输入,这些输入对味觉诱发反应产生抑制和兴奋影响。将生长抑素(Sst)和促肾上腺皮质激素释放激素(Crh)报告小鼠与向尾侧PBN注射逆行示踪剂CTb-488一起使用,以确定Sst和Crh细胞类型对源自外侧下丘脑(LH)、杏仁核中央(CeA)、终纹床核(BNST)和岛皮质(IC)的下行通路的贡献程度。注射后5至7天,将动物安乐死,并准备组织切片用于共聚焦显微镜。除IC外,前脑各部位的Crh细胞类型均向前脑区转移,其中源自前脑区的比例最大。对于Sst细胞类型,CeA中双标记细胞比例最大,其次是BNST。LH中很少有逆行标记的细胞共表达Sst,而IC中没有观察到双标记的细胞。目前的研究结果表明,Sst和Crh细胞类型是杏仁核和/或BNST到PBN下行通路的重要组成部分,并定位在中枢味觉加工中发挥神经调节作用。
The pontine parabrachial nucleus (PBN) receives substantial descending input from higher order forebrain regions that exerts inhibitory and excitatory influences on taste-evoked responses. Somatostatin (Sst) and corticotrophin releasing hormone (Crh) reporter mice were used in conjunction with injection of the retrograde tracer CTb-488 into the caudal PBN to determine the extent to which Sst and Crh cell types contribute to the descending pathways originating in the lateral hypothalamus (LH), central nucleus of the amygdala (CeA), bed nucleus of the stria terminalis (BNST), and insular cortex (IC). Five to 7 days following injections, the animals were euthanized and tissue sections prepared for confocal microscopy. Crh cell types in each forebrain site except IC project to the PBN with the greatest percentage originating in the BNST. For Sst cell types, the largest percentage of double-labeled cells was found in the CeA followed by the BNST. Few retrogradely labeled cells in the LH coexpressed Sst, whereas no double-labeled cells were observed in IC. The present results suggest that Sst and Crh cell types are a substantial component of the descending pathways from the amygdala and/or BNST to the PBN and are positioned to exert neuromodulatory effects on central taste processing.
臂旁核中的神经化学相互作用介导内脏丘脑神经元的内脏输入。
DOI: 10.1152/ajpregu.1995.268.3.r786
发表时间: 1995
期刊: The American journal of physiology
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DOI: 10.1152/ajpregu.1993.264.4.r668
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期刊: The American journal of physiology
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脑桥的味觉神经编码
DOI: --
发表时间: 1976
期刊: Brain Research
影响因子: 2.9
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生长抑素通过超极化和增强IM(一种被毒蕈碱激动剂阻断的非失活电压依赖性外向电流)来抑制孤束复合体神经元的兴奋性。
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DOI: 10.1016/0361-9230(92)90167-v
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影响因子: 3.8
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