The distribution of presumptive thoracic paraganglionic tissue in the common marmoset (Callithrix jacchus).
The distribution of presumptive thoracic paraganglionic tissue in the common marmoset (Callithrix jacchus).
复制标题
普通狨猴（Callithrix jacchus）中假定的胸部副神经节组织的分布。
DOI：
10.1590/s0100-879x2002000400005
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
M. de B Daly
中科院分区：
文献类型：
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作者：
J. Clarke;M. de B Daly
用10%的缓冲甲醛盐溶液扩散固定7只成年狨猴（Callithrix jacchus）的主动脉-肺区（APR）和另外3只成年狨猴的右锁骨下动脉区域。在这两个区域连续切割5微米切片，并用马氏黄、亮晶红和可溶性蓝法染色。推测的胸椎副神经节（PTP）组织仅在apr中观察到，PTP组织由小群细胞组成，其大小和数量各不相同。细胞群的分布千差万别，以至于试图对它们的位置进行分类会产生误导；它们不受结缔组织包膜的限制，但总是与左迷走神经的胸支有关。细胞位于纵隔这部分特征的疏松的网状组织中，并从邻近的小结缔组织小动脉获得血液供应。与颈动脉体中发现的副神经节组织不同，胸腔细胞似乎没有丰富的毛细血管血液供应。然而，有一个密切的细胞-神经关系。细胞直径10 ~ 15微米，呈椭圆形或圆形，有中央细胞核，胞质透明。没有证据表明这些细胞具有与颈动脉体中1型和2型细胞的排列相似的“伴侣”细胞。总之，我们在狨猴的APR中发现了推测的副神经节组织的证据，然而，它并没有显示在一些非灵长类哺乳动物中描述的主动脉体化学感受器的典型组织学特征。需要对其他非人类灵长类动物的纵隔进行调查，以确定这一发现对这些动物是否是非典型的。
The aortic-pulmonary regions (APR) of seven adult marmosets (Callithrix jacchus) and the region of the right subclavian artery of a further three marmosets were diffusion-fixed with 10% buffered formol-saline solution. In both regions serial 5 microm sections were cut and stained by the Martius yellow, brilliant crystal scarlet and soluble blue method. Presumptive thoracic paraganglionic (PTP) tissue was only observed in the APR. PTP tissue was composed of small groups of cells that varied in size and number. The distribution of the groups of cells was extremely variable, so much so that it would be misleading to attempt to classify their position; they were not circumscribed by a connective tissue capsule, but were always related to the thoracic branches of the left vagus nerve. The cells lay in loose areolar tissue characteristic of this part of the mediastinum and received their blood supply from small adjacent connective tissue arterioles. Unlike the paraganglionic tissue found in the carotid body the cells in the thorax did not appear to have a profuse capillary blood supply. There was, however, a close cellular-neural relationship. The cells, 10-15 microm in diameter, were oval or rounded in appearance and possessed a central nucleus and clear cytoplasm. No evidence was found that these cells possessed a 'companion' cell reminiscent of the arrangement of type 1 and type 2 cells in the carotid body. In conclusion, we found evidence of presumed paraganglionic tissue in the APR of the marmoset which, however, did not show the characteristic histological features of the aortic body chemoreceptors that have been described in some non-primate mammals. A survey of the mediastina of other non-human primates is required to establish whether this finding is atypical for these animals.