兴奋性突触后电位
儿茶酚胺
脊髓
多巴胺
化学
去甲肾上腺素
内科学
内分泌学
神经科学
生物
医学
抑制性突触后电位
作者
David I. Lewis,John H. Coote
出处
期刊:Brain Research
[Elsevier]
日期:1990-10-01
卷期号:530 (2): 229-234
被引量:46
标识
DOI:10.1016/0006-8993(90)91287-q
摘要
The actions of microiontophoretically applied catecholamines on antidromically identified sympathetic preganglionic neurones (SPN) in the upper thoracic spinal cord of the anaesthetized rat were investigated. Noradrenaline (NA) excited the majority of neurones (50/71), however, a significant number were inhibited by the catecholamine (17/71). Adrenaline excited 4/9 SPN and inhibited 2/9. Dopamine had excitatory actions on SPN (3/3). Dual actions of NA on the same SPN were demonstrated, with the actions of the catecholamine being modulated by excitatory amino acids. NA was also shown to induce burst firing in 21% of SPN.
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