Sources of descending afferents to the inferior olive from the upper brain stem in the cat as revealed by the retrograde transport of horseradish peroxidase
Sources of descending afferents to the inferior olive from the upper brain stem in the cat as revealed by the retrograde transport of horseradish peroxidase
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辣根过氧化物酶的逆行转运揭示了猫从上脑干到下橄榄的下行传入神经的来源
DOI：
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发表时间：
1981
期刊：
影响因子：
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通讯作者：
J. Courville
中科院分区：
文献类型：
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作者：
J. Saint;J. Courville
用辣根过氧化物酶(HRP)逆行追踪35只猫下橄榄核下行传入的来源。HRP标记细胞主要位于同侧中脑，从红核的吻极到丘脑的尾内侧缘。在大量标记的核群中有小细胞红核、Cajal间质核、Darkschewitsch核和束旁核尾内侧端。在Cajal间质核外侧的网状结构、尾侧束旁核、Forel野的核和中央灰质也有偶见标记细胞。不可能识别与HRP沉积定位相对应的标记细胞的地形分布。在中脑的其他部位，上丘深层(IV和VI)有HRP标记的细胞，主要分布在注射的对侧和视束核，以及同侧顶盖前核和顶盖前后核。这些组最好是在橄榄尾部注射后进行标记。以前报道的投射到下橄榄的某些区域没有标记细胞；这些区域包括基底节、中缝吻侧核和Edinger-Westphal核。与中央灰质相邻的系脑核似乎是橄榄下行传入的主要来源。
The retrograde transport of horseradish peroxidase (HRP) was employed in 35 cats to trace the sources of descending afferents to the inferior olivary nucleus. The majority of HRP‐labeled cells were located in the ipsilateral mesencephalon, from the rostral pole of the red nucleus to the caudomedial border of the thalamus. Among the heavily labeled nuclear groups were the parvocellular red nucleus, the interstitial nucleus of Cajal, the nucleus of Darkschewitsch, and the caudomedial extremity of the subparafascicular nucleus. Occasional cells were also labeled in the reticular formation lateral to the interstitial nucleus of Cajal, in the caudomedial parafascicular nucleus, in the nucleus of the fields of Forel, and in the centray gray. It was not possible to recognize a topographic distribution of the labeled cells corresponding to the loclization of the HRP deposits. Elsewhere in the midbrain, there were HRP‐labeled cells in the deep layers of the superior colliculus (IV and VI), predominantly on the side contralateral to the injection and in the nucleus of the optic tract, and in the anterior and posterior pretectal nuclei, ipsilaterally. These groups were best labeled after caudally located injections in the olive. Certain areas previously reported to project to the inferior olive were devoid of labeled cells; these included the basal ganglia, the rostral raphe nuclei, and the nucleus of Edinger‐Westphal. It appears that the mesecephalic nuclei bordering the central gray represent the major source of descending afferents to the olive.