The spinal sympathetic preganglionic cell column in the puffer fish, Takifugu niphobles

Cell and Tissue Research
K FunakoshiR Kishida

Abstract

Little is known about the spinal sympathetic organization in teleosts. We examined the location of the sympathetic preganglionic neurons with horseradish peroxidase (HRP) labeling. After HRP application to the sympathetic trunk or celiac ganglion, labeled neurons were found just dorsal - dorsolateral to the central canal. They form a cell column (central autonomic nucleus) at the level of the posterior rootlet of the first spinal nerve to the third spinal nerve. HRP application to the sympathetic trunk produced labeling in almost the entire central autonomic nucleus, but HRP application to the celiac ganglion produced labeling in only the rostral half of the central autonomic nucleus. These results suggest that there is some topographical arrangement in the rostrocaudal part of the central autonomic nucleus. On the other hand, the fact that the sympathetic preganglionic neurons are within a single cell column and have no mediolateral segregation means that the target-related or function-associated mediolateral arrangement found in tetrapods is lacking in this species. We also found some labeling in the central autonomic nucleus after HRP application to the cranial nerves. This may indicate that the preganglionic neurons project...Continue Reading

Citations

Jan 5, 2002·The Journal of Comparative Neurology·Kengo FunakoshiReiji Kishida
Jun 14, 2005·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Soon-Ju MoonKazumasa Uematsu
Feb 28, 1998·Journal of the Autonomic Nervous System·K FunakoshiR Kishida
Jan 6, 2009·Acta histochemica·Giacomo ZacconeSalvatore Fasulo
Jun 13, 2014·Integrative Zoology·Xiaojie WangJiakun Song
Jan 19, 2007·Brain, Behavior and Evolution·Kengo Funakoshi, Masato Nakano

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