Send to

Choose Destination
Neurosci Lett. 1989 Apr 24;99(1-2):55-60.

Two brain nuclei controlling circadian rhythms are identified by GFAP immunoreactivity in hamsters and rats.

Author information

Department of Psychiatry, State University of New York, Stony Brook 11794.


The intergeniculate leaflet (IGL) of the lateral geniculate complex is marked by the presence of neuro-peptide Y-containing neurons that project to the suprachiasmatic nuclei (SCN) of the hypothalamus. In the present study, we demonstrate that both the IGL and SCN in the hamster and rat are specifically delineated by the presence of glial fibrillary acidic protein-like immunoreactivity. This is significantly greater than in most other diencephalic regions and is particularly dense in the hamster brain. These observations suggest that glial-neuronal interactions may participate in circadian rhythm generation and regulation.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center