A telencephalospinal projection in the Tegu lizard (Tupinambis teguixin)
A telencephalospinal projection in the Tegu lizard (Tupinambis teguixin)
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DOI：
10.1016/0006-8993(89)91054-8
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发表时间：
1989-09
期刊：
影响因子：
2.9
通讯作者：
K. Follett
中科院分区：
文献类型：
--
作者：
K. Follett
研究人员对 Tegu 蜥蜴（Tupinambis teguixin）进行了研究，以确定哺乳动物皮质脊髓束同源物的存在。通过评估应用于颈脊髓的逆行运输辣根过氧化物酶的定位来确定端脑传出投射到脊髓的来源。标记的细胞存在于其他作者先前报道的端脑下部位，此外，还发现于三叉神经的主要感觉和运动核以及后连合的核中。发现了端脑脊髓投射，起源于腹侧尾部端脑。组织化学染色显示同一区域的细胞和神经纤维中存在高浓度的乙酰胆碱酯酶。该束被认为与哺乳动物杏仁脊髓束同源。没有发现爬虫类皮质脊髓束的同源物。
Tegu lizards (Tupinambis teguixin) were studied to determine the presence of a homologue of the mammalian corticospinal tract. The sources of telencephalic efferent projections to the spinal cord were determined by evaluating the localization of retrogradely transported horseradish peroxidase applied in the cervical spinal cord. Labeled cells were present in subtelencephalic sites reported previously by other authors and, in addition, were found in the principal sensory and motor nuclei of the trigeminal nerve and in the nucleus of the posterior commissure. A telencephalospinal projection was identified, originating in the ventral caudal telencephalon. Histochemical staining revealed a high concentration of acetylcholinesterase in cells and neuropil in the same area. This tract is suggested to be homologous to the mammalian amygdalospinal tract. No reptilian homologue of the corticospinal tract was identified.