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欧洲林蛙和非洲爪蟾大脑中甘丙肽样免疫反应性的分布。

Distribution of galanin-like immunoreactivity in the brain of Rana esculenta and Xenopus laevis.

作者信息

Lázár G Y, Liposits Z S, Tóth P, Trasti S L, Maderdrut J L, Merchenthaler I

机构信息

Department of Anatomy, University Medical School, Pécs, Hungary.

出版信息

J Comp Neurol. 1991 Aug 1;310(1):45-67. doi: 10.1002/cne.903100106.

Abstract

The immunocytochemical distribution of galanin-containing perikarya and nerve terminals in the brain of Rana esculenta and Xenopus laevis was determined with antisera directed toward either porcine or rat galanin. The pattern of galanin-like immunoreactivity appeared to be identical with antisera directed toward either target antigen. The distribution of galanin-like immunoreactivity was similar in Rana esculenta and Xenopus laevis except for the absence of a distinct laminar distribution of immunoreactivity in the optic tectum of Xenopus laevis. Galanin-containing perikarya were located in all major subdivisions of the brain except the metencephalon. In the telencephalon, immunoreactive perikarya were detected in the pars medialis of the amygdala and the preoptic area. In the diencephalon, immunoreactive perikarya were detected in the caudal half of the suprachiasmatic nucleus, the nucleus of the periventricular organ, the ventral hypothalamus, and the median eminence. In the mesencephalon, immunoreactive perikarya were detected near the midline of the rostroventral tegmentum, in the torus semicircularis and, occasionally, in lamina A and layer 6 of the optic tectum. In the myelencephalon, labelled perikarya were detected only in the caudal half of the nucleus of the solitary tract. Immunoreactive nerve fibers of varying density were observed in all subdivisions of the brain with the densest accumulations of fibers occurring in the pars lateralis of the amygdala and the preoptic area. Dense accumulations of nerve fibers were also found in the lateral septum, the medial forebrain bundle, the periventricular region of the diencephalon, the ventral hypothalamus, the median eminence, the mesencephalic central gray, the laminar nucleus of the torus semicircularis, several laminae of the optic tectum, the interpeduncular nucleus, the isthmic nucleus, the central gray of the rhombencephalon, and the dorsolateral caudal medulla. The extensive system of galanin-containing perikarya and nerve fibers in the brain of representatives of two families of anurans showed many similarities to the distribution of galanin-containing perikarya and nerve fibers previously described for the mammalian brain.

摘要

用针对猪或大鼠甘丙肽的抗血清,确定了食用蛙和非洲爪蟾脑中含甘丙肽的胞体和神经终末的免疫细胞化学分布。针对两种靶抗原的抗血清,其甘丙肽样免疫反应模式似乎是相同的。除了非洲爪蟾视顶盖中缺乏明显的免疫反应性分层分布外,食用蛙和非洲爪蟾中甘丙肽样免疫反应性的分布相似。含甘丙肽的胞体位于除后脑外的脑的所有主要亚区。在端脑,杏仁核内侧部和视前区检测到免疫反应性胞体。在间脑,视交叉上核后半部、室周器官核、腹侧下丘脑和正中隆起检测到免疫反应性胞体。在中脑,在嘴腹侧被盖区中线附近、半规管隆起以及视顶盖的A层和第6层偶尔检测到免疫反应性胞体。在延髓,仅在孤束核后半部检测到标记的胞体。在脑的所有亚区都观察到密度不同的免疫反应性神经纤维,纤维最密集的区域出现在杏仁核外侧部和视前区。在外侧隔、内侧前脑束、间脑的室周区域、腹侧下丘脑、正中隆起、中脑中央灰质、半规管隆起的层状核、视顶盖的几层、脚间核、峡核、菱脑中央灰质和延髓背外侧尾侧也发现了密集的神经纤维聚集。无尾目两个科代表动物脑中广泛的含甘丙肽胞体和神经纤维系统,与先前描述的哺乳动物脑中含甘丙肽胞体和神经纤维的分布有许多相似之处。

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