Zheng J Q
Department of Anatomy, Hyogo College of Medicine, Japan.
Kaibogaku Zasshi. 1994 Jun;69(3):261-9.
Direct projections from the reuniens nucleus to the cerebral cortex were examined using the anterograde tracing method of Phaseolus vulgaris leucoagglutinin (PHA-L) in the rat. The reuniens nucleus was found to project to widespread cortical regions. The labeled fibers from the reuniens nucleus terminated in layers I, III and IV of the frontal cortex including the medial and ventrolateral orbital cortices, the cingulate cortex, and the infralimbic cortex. A few fibers from the nucleus reuniens also terminated in layer I of the agranular insular cortex, the temporal cortex and the parietal cortex. The labeled terminals were also present in the retrosplenial granular and agranular cortical regions of the layer I. The heavy PHA-L labeled fibers terminated in the stratum lacunosum and molecular of field CA1 of Ammon's horn of the hippocampus, and moderately in the subiculum, the presubiculum and the parasubiculum, mainly in the molecular layer. There were also may labeled fibers and terminals in the perirhinal cortex of layer I, the entorhinal cortex of layers I, III-IV and V, and the occipital cortex of layer I. These results indicate that the reuniens nucleus projects to much more widespread regions than previously known.
采用菜豆白细胞凝集素（PHA-L）顺行示踪法，在大鼠中研究了连合核向大脑皮层的直接投射。发现连合核投射至广泛的皮层区域。来自连合核的标记纤维终止于额叶皮层的I、III和IV层，包括内侧和腹外侧眶额皮层、扣带皮层和边缘下皮层。连合核的少数纤维也终止于无颗粒岛叶皮层、颞叶皮层和顶叶皮层的I层。标记终末也存在于I层的压后颗粒和无颗粒皮层区域。大量PHA-L标记纤维终止于海马角CA1区的腔隙层和分子层，在海马下托、前下托和旁下托中适度终止，主要在分子层。I层的嗅周皮层、I、III-IV和V层的内嗅皮层以及I层的枕叶皮层中也有许多标记纤维和终末。这些结果表明，连合核投射至比先前已知更为广泛的区域。
