Localization of the neuronal form of nitric oxide synthase (bNOS) in the diencephalon and pituitary gland of the catfish, Synodontis multipunctatus: an immunocytochemical study

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• 作者：Jadhao ; Arun G. ; Malz ; Cordula R.
• 关键词：Preoptic area ; Pituitary gland ; Nitric oxide ; Catfish ; Immunocytochemistry ; bNOS
• 刊名：General and Comparative Endocrinology
• 出版年：2003
• 出版时间：June 15, 2003
• 年：2003
• 卷：132
• 期：2
• 页码：278-283
• 全文大小：397 K

文摘

The distribution of the neuronal form of nitric oxide synthase (bNOS) was investigated in the brain and pituitary gland of the catfish, Synodontis multipunctatus. Immunoreactive neurons were found mainly in the nucleus praeopticus periventricularis, the parvocellular and supraoptic subdivisions of the nucleus praeopticus, the nucleus recessus lateralis and the nucleus recessus posterioris. In addition, some scattered bNOS labeled somata were noted in the dorsal hypothalamic area. A few positive cells in the adenohypophysis and some reactive fibers in the pituitary stalk were also seen. Our results are compatible with the notion that the cells expressing bNOS in the diencephalon and hypophysis are involved in the control of hormone regulation. Moreover, the presence of bNOS positive cells in the rostral pars distalis of the pituitary gland supports a role of nitric oxide in osmoregulation.