Physiology of quantal norepinephrine release from somatodendritic sites of neurons in locus coeruleus.
Physiology of quantal norepinephrine release from somatodendritic sites of neurons in locus coeruleus.
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蓝斑神经元体树突部位量子去甲肾上腺素释放的生理学
DOI:
10.3389/fnmol.2012.00029
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发表时间:
2012
影响因子:
4.8
通讯作者:
Zhou Z
中科院分区:
文献类型:
--
作者:
Huang HP;Zhu FP;Chen XW;Xu ZQ;Zhang CX;Zhou Z
Norepinephrine (NE) released from the nerve terminal of locus coeruleus (LC) neurons contributes to about 70% of the total extracellular NE in primates brain. In addition, LC neurons also release NE from somatodendritic sites. Quantal NE release from soma of LC neurons has the characteristics of long latency, nerve activity-dependency, and autoinhibition by α2-adrenergic autoreceptor. The distinct kinetics of stimulus-secretion coupling in somata is regulated by action potential patterns. The physiological significance of soma and dendritic release is to produce negative-feedback and to down-regulate neuronal hyperactivity, which consequently inhibit NE release from axon terminal of LC projecting to many brain areas. Recent discoveries about the LC somatodendritic release may provide new insights into the pathogenesis of clinic disease involving LC-NE system dysfunction, and may help developing remedy targeted to the LC area.
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影响因子:
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DOI:
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