title: Localization of the neuronal form of nitric oxide synthase (bNOS) in the diencephalon and pituitary gland of the catfish, Synodontis multipunctatus: an immunocytochemical study.
abstract: 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.
authors.affiliation: Department of Anatomy and Embryology, School of Medicine, University of Goettingen, Kreuzbergring 36, D-37075 Goettingen, Germany. arun_jadhao@hotmail.com
authors.forename: Arun G
authors.initials: AG
authors.lastname: Jadhao
authors.forename: Cordula R
authors.initials: CR
authors.lastname: Malz
mesh_terms: D000818:Animals; D002397:Catfishes / Q000378:metabolism*; D004027:Diencephalon / Q000201:enzymology*; D005260:Female; D007150:Immunohistochemistry; D008297:Male; D019001:Nitric Oxide Synthase / Q000378:metabolism*; D052248:Nitric Oxide Synthase Type I; D009994:Osmolar Concentration; D010902:Pituitary Gland / Q000166:cytology / Q000201:enzymology*; D010904:Pituitary Gland, Posterior / Q000166:cytology / Q000378:metabolism; D011301:Preoptic Area / Q000166:cytology / Q000378:metabolism
chemical_list: D019001:Nitric Oxide Synthase; D052248:Nitric Oxide Synthase Type I