Spontaneous rhythm in c-Fos immunoreactivity in the dorsomedial part of the rat suprachiasmatic nucleus.
In rats maintained for 2 days in constant darkness, the suprachiasmatic nucleus exhibited a circadian rhythm in c-Fos immunoreactivity, with the maximum in the morning and trough during the subjective night. In contrast to the night-time photic c-Fos induction occurring in the ventrolateral part of the nucleus, the spontaneous rhythmic c-Fos induction in darkness occurred in the dorsomedial part and might indicate an elevated dorsomedial neuronal activity in the early subjective day.
Sumová
A
A
Institute of Physiology, Academy of Sciences of the Czech Republic, Vídenská 1083, 142 20, Prague 4, Czech Republic. sumova@biomed.cas.cz
Trávnícková
Z
Z
Mikkelsen
J D
JD
Illnerová
H
H
D000818:Animals; D002452:Cell Count; D002940:Circadian Rhythm / Q000502:physiology; D003624:Darkness; D007150:Immunohistochemistry; D008297:Male; D010775:Photic Stimulation; D016760:Proto-Oncogene Proteins c-fos / Q000032:analysis* / Q000378:metabolism*; D051381:Rats; D017208:Rats, Wistar; D013493:Suprachiasmatic Nucleus / Q000166:cytology / Q000378:metabolism* / Q000502:physiology*
D016760:Proto-Oncogene Proteins c-fos