Distribution and cytoarchitecture of sympathetic neurons innervating the pineal gland in chick: a CTB-HRP study |
| |
| Authors: | Jia L Wang Z Chen Y |
| |
| Institution: | Address of authors: Laboratory of Anatomy of Domestic Animal, College of Animal Medicine, China Agricultural University, Haidian, Beijing 100094, China;Corresponding author: Tel.: +86 10 62733778;fax: +86 10 62733199;e-mail: |
| |
| Abstract: | The neurons in bilateral superior cervical ganglia (SCG) innervating the chick pineal gland were labelled by using the technique of retrograde axonal labelling with cholera toxin B subunit linked to horseradish peroxidase (CTB-HRP). To our results, perikarya of these sympathetic neurons distributed from rostral to caudal in the SCG, and mainly localized in the opposite side of the paravertebral trunk. The fibres of these neurons were collected by the cephalic carotid nerve. According to the sizes of somal area and dendritic field, these sympathetic neurons projecting to the pineal gland were classified into four major groups: group I cells (52.4%) with a small somal area (303.5 μm2 on average) and narrow dendritic field (3767.8 μm2 on average), group II cells (39.0%) with a middle-sized somal area (473.3 μm2) and middle-sized dendritic field (7522.2 μm2), group III cells (6.4%) with a middle-sized somal area (473.4 μm2) and wide dendritic field (13 104.4 μm2), and group IV cells (2.2%) with a large somal area (940.7 μm2) and wide dendritic field (14 553.2 μm2). Of these pineal projecting neurons, most took on a lesser dendritic field. The neurons with small or middle-sized dendritic field from group I and II were about 91.4% of the total neurons labelled with CTB-HRP, and the neurons with wide dendritic field from group III and IV were less with 8.6%. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
