c-Fos rhythm in subdivisions of the rat suprachiasmatic nucleus under artifical and natural photoperiods

0142090 - FGU-C 20010135 RIV US eng J - Journal Article
Jáč, Martin - Sumová, Alena - Illnerová, Helena
c-Fos rhythm in subdivisions of the rat suprachiasmatic nucleus under artifical and natural photoperiods.
American Journal of Physiology-Regulatory Integrative and Comparative Physiology. Roč. 279, - (2000), s. R2270-R2276. ISSN 0363-6119. E-ISSN 1522-1490
R&D Projects: GA ČR GA309/97/0512; GA ČR GA309/00/1655
Subject RIV: ED - Physiology
Impact factor: 2.765, year: 2000

Rats were maintained under artifical light-dark cycles with eitherlong 16-h photoperiod or a short 8-h photoperiod or under naturaldaylight in summer when the photoperiod lasted about 16-h or inwinter when it lasted only 8 hi. The rhythms of c-Fos immunoreacti-vity under natural photoperiod did not differ significantly fromthose under corresponding artifical photoperiods. The morning c-Fosrise in the dorsomedial SCN always preceded that in the ventrolateralSCN. The results show that wherease c-Fos rhythmicity under actuallight-dark cycles is affected by the photoperiod in both SCN subdivisions,mechanism of c-Fos induction in the dorsomedial SCN differs from thatin the ventrolateral SCN.
Permanent Link: http://hdl.handle.net/11104/0039799