THE NUCLEUS PARAGIGANTOCELLULARIS LATERALIS IN THE RAT - CONFORMATION AND CYTOLOGY
THE NUCLEUS PARAGIGANTOCELLULARIS LATERALIS IN THE RAT - CONFORMATION AND CYTOLOGY
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DOI：
10.1007/bf00316048
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发表时间：
1981-01-01
期刊：
影响因子：
--
通讯作者：
PALAY, SL
中科院分区：
文献类型：
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作者：
ANDREZIK, JA;CHANPALAY, V;PALAY, SL
外侧巨细胞旁核（PGCL）位于延髓头端的腹侧部分。在3个基本平面上观察大鼠脑干连续切片，并确定PGCL的边界。为了可视化核的形状和范围，从一系列冠状切片中对PGCL进行三维重建。神经元面积、长度和宽度的测量表明存在许多神经元类型。小神经元的测量值小于150 μ m2，而大神经元的测量值大于250 μ m2。某些神经元类型优先分布在整个PGCL，并在此基础上，核可分为尾侧和吻侧亚群。大多数大神经元（> 250 μ m2）发现于尾侧部分。某些神经元含有核内杆，并且这些神经元通常以小群布置，尤其常见于尾侧PGCL。两种形态学上不同的神经元类型将3 H-5-羟色胺注入脑室系统时，该标记物;其他神经元未通过这种方法标记可能含有其他不同的递质。基于神经元的测量和染色质量，可以确定PGCL是一个小细胞网状核，其特征在于许多神经元类型。
The nucleus paragigantocellularis lateralis (PGCL) is located in the ventral portion of the rostral medulla. Serial sections of the rat brainstem were examined in the 3 cardinal planes and the boundaries of the PGCL were determined. To visualize the shape and extent of the nucleus, a 3-dimensional reconstruction of the PGCL was made from a series of coronal sections. Measurements of neuronal areas, lengths and widths indicate that a number of neuronal types are present. Small neurons measure less than 150 .mu.m2 and large neurons greater than 250 .mu.m2. Some neuronal types are distributed preferentially throughout the PGCL, and on this basis the nucleus may be divided into caudal and rostral subgroups. Most large neurons (> 250 .mu.m2) are found in the caudal portion. Certain neurons contain intranuclear rods, and these neurons are often disposed in small groups, especially common in the caudal PGCL. Two morphologically distinct neuronal types incorporate 3H-serotonin when this marker is infused into the ventricular system; the other neurons not marked by this method probably contain other, different transmitters. Based on neuronal measurements and staining qualities, it is ascertained that the PGCL is a parvocellular reticular nucleus characterized by many neuronal types.