Moriizumi T, Leduc-Cross B
Department of Anatomy, University of Toronto, Ontario, Canada.
Exp Brain Res. 1992;88(2):451-4. doi: 10.1007/BF02259121.
The dopaminergic nature of the pathway from the subparafascicular thalamic nucleus and its adjacent region to the amygdala was reexamined by means of retrograde fluorescent tracers coupled with tyrosine hydroxylase (TH) immunofluorescence. After injecting a small amount of tracer into the amygdala, retrogradely labeled cells were found in the subparafascicular thalamic nucleus and its adjacent periventricular region. TH immunofluorescence showed that these labeled cells completely lacked TH immunoreactivity. Similar results were obtained when a larger amount of tracer was applied to the amygdala. The present study, in contrast to the previous report describing the dopaminergic innervation of the amygdala by the cells in and around the subparafascicular area (A11 catecholamine cell group), indicates that the A11 cell group does not contribute to a dopaminergic input to the amygdala.
通过逆行荧光示踪剂结合酪氨酸羟化酶（TH）免疫荧光法，重新研究了从束旁下丘核及其邻近区域到杏仁核的通路的多巴胺能性质。向杏仁核注射少量示踪剂后，在束旁下丘核及其邻近的脑室周区域发现了逆行标记的细胞。TH免疫荧光显示这些标记细胞完全缺乏TH免疫反应性。当向杏仁核施加大量示踪剂时，也获得了类似结果。与之前描述束旁区域及其周围细胞（A11儿茶酚胺细胞群）对杏仁核的多巴胺能神经支配的报告相反，本研究表明A11细胞群对杏仁核的多巴胺能输入没有贡献。
