Gate for photic resetting of intrinsic rhythmicity of the rat suprachiasmatic nucleus under a long photoperiod.
In rats maintained under a long photoperiod and then released into darkness, the time interval enabling photic resetting of the intrinsic rhythmicity of the suprachiasmatic nucleus (SCN), namely of the rhythm in the light-induced c-Fos production, was similar to the previously reported time interval enabling high c-fos photoinduction in the SCN (Sumová, A., Trávnícková, Z., Peters, R., Schwartz, W.J. and Illnerová, H., The rat suprachiasmatic nucleus is a clock for all seasons. Proc. Natl. Acad. Sci. USA, 92 (1995) 7754-7758). The data indicate that both intervals may represent the same window for the photic sensitivity of the SCN pacemaking program.
Jelínková
D
D
Institute of Physiology, Academy of Sciences of the Czech Republic, Vídenská 1083, 14220, Prague, Czech Republic.
Illnerová
H
H
Sumová
A
A
D000704:Analysis of Variance; D000818:Animals; D002940:Circadian Rhythm / Q000502:physiology / Q000528:radiation effects*; D005786:Gene Expression Regulation / Q000528:radiation effects; D007150:Immunohistochemistry; D008027:Light; D008297:Male; D017440:Photoperiod; D016760:Proto-Oncogene Proteins c-fos / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D013493:Suprachiasmatic Nucleus / Q000378:metabolism / Q000528:radiation effects*
D016760:Proto-Oncogene Proteins c-fos; D012333:RNA, Messenger