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新生嗅觉投射神经元对血清素的短暂摄取。

Transient uptake of serotonin by newborn olfactory projection neurons.

作者信息

Beltz B S, Benton J L, Sullivan J M

机构信息

Department of Biological Sciences, Wellesley College, Wellesley, MA 02481, USA.

出版信息

Proc Natl Acad Sci U S A. 2001 Oct 23;98(22):12730-5. doi: 10.1073/pnas.231471298.

Abstract

A life-long turnover of sensory and interneuronal populations has been documented in the olfactory pathways of both vertebrates and invertebrates, creating a situation where the axons of new afferent and interneuronal populations must insert into a highly specialized glomerular neuropil. A dense serotonergic innervation of the primary olfactory processing areas where these neurons synapse also is a consistent feature across species. Prior studies in lobsters have shown that serotonin promotes the branching of olfactory projection neurons. This paper presents evidence that serotonin also regulates the proliferation and survival of projection neurons in lobsters, and that the serotonergic effects are associated with a transient uptake of serotonin into newborn neurons.

摘要

在脊椎动物和无脊椎动物的嗅觉通路中,已记录到感觉神经元和中间神经元群体的终生更替,这就产生了一种情况,即新的传入神经元和中间神经元群体的轴突必须插入高度特化的肾小球神经毡中。这些神经元发生突触的主要嗅觉处理区域存在密集的5-羟色胺能神经支配,这也是跨物种的一个一致特征。先前对龙虾的研究表明,5-羟色胺可促进嗅觉投射神经元的分支。本文提供的证据表明,5-羟色胺还可调节龙虾投射神经元的增殖和存活,且5-羟色胺能效应与新生神经元对5-羟色胺的短暂摄取有关。

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