Extra-focal catecholamine levels in ‘kindled’ rat forebrains

W. McIntyre Burnham, Gary A. King , Kenneth G. Lloyd
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引用次数: 17

Abstract

  • 1.

    1. Levels of noradrenaline, dopamine and dopamine metabolites were measured in the striatum, limbic system and hypothalamus of amygdala-kindled and yoked control rats.

  • 2.

    2. Subjects were sacrificed three weeks after the kindled animals had displayed their fifth “Stage 5” generalized convulsion.

  • 3.

    3. No significant differences between kindled and control brains were found in any region except the hypothalamus. In the hypothalamus, noradrenaline and dopamine levels were significantly elevated in the kindled tissue. DOPAC was unchanged.

  • 4.

    4. The data suggest that amygdala kindling produces long lasting catecholaminergic changes in the hypothalamus, a major target for amygdaloid efferent fibers. They are in general agreement with the “noradrenaline hypothesis” of kindling.

点燃的大鼠前脑的焦外儿茶酚胺水平
1.1. 2.2.测定了杏仁核点燃对照大鼠和交叉对照大鼠纹状体、边缘系统和下丘脑中去甲肾上腺素、多巴胺和多巴胺代谢物的水平。在被点燃的动物表现出第五次“第五阶段”全身性抽搐三周后,受试者被处死。除了下丘脑外,点燃和控制的大脑在任何区域都没有发现显著差异。在下丘脑,点燃组织中的去甲肾上腺素和多巴胺水平显著升高。DOPAC不变。数据表明,杏仁核点燃会在下丘脑产生持久的儿茶酚胺能变化,这是杏仁核输出纤维的主要目标。他们大体上同意点火的“去甲肾上腺素假说”。
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