US EPA

6196597 

Journal Article 

Aminergic neurons in the hypothalamus of the dogfish, Scyliorhinus canicula L. (Elasmobranch). A histofluorescence study 

Rodriguez-Moldes, I; Anadon, R 

1987 

Yes 

Journal of Hirnforsch
ISSN: 0021-8359 

28 

6 

685-693 

English 

3440834 

Aminergic neurons of the hypothalamus of Scyliorhinus canicula were studied using formaldehyde-induced fluorescence. An aminergic organ of the preoptic recess (PRO) consists of both cerebrospinal fluid (CSF)-contacting and non-contacting green-yellow fluorescent neurons of bipolar or multipolar morphologies. Caudal to the optic chiasma a group of faint fluorescent neurons is located among the fibres of the commissura transversa. In the posterior hypothalamus the infundibular wall has numerous aminergic CSF-contacting neurons along lines of diverticles. Scarce CSF-contacting neurons are also found in the roof and floor of the recesses of the inferior hypothalamic lobes. The folded posterior recess has a very high number of aminergic CSF-contacting neurons of bipolar shape. Its coarse layer of cell bodies is covered by a large amount of fluorescent fibres which form a conspicuous cap-like band. These structures are discussed from a comparative point of view in relation with aminergic hypothalamic systems of other anamniote vertebrates.