Endogenous melatonin signal does not mediate the effect of photoperiod on the rat suprachiasmatic nucleus
Language English Country Netherlands Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
8836538
DOI
10.1016/0006-8993(96)00408-8
PII: 0006-8993(96)00408-8
Knihovny.cz E-resources
- MeSH
- Pineal Gland physiology MeSH
- Photoperiod * MeSH
- Immunohistochemistry MeSH
- Rats MeSH
- Melatonin physiology MeSH
- Suprachiasmatic Nucleus radiation effects MeSH
- Rats, Wistar MeSH
- Nerve Tissue Proteins analysis MeSH
- Proto-Oncogene Proteins c-fos analysis MeSH
- Signal Transduction radiation effects MeSH
- Animals MeSH
- Check Tag
- Rats MeSH
- Male MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Melatonin MeSH
- Nerve Tissue Proteins MeSH
- Proto-Oncogene Proteins c-fos MeSH
The duration of the nocturnal interval during which light can induce high Fos-like immunoreactivity in the suprachiasmatic nucleus is a function of the photoperiod to which rats are exposed. The effect of photoperiod is not altered by pinealectomy indicating that day length affects the functional state of the suprachiasmatic nucleus circadian pacemaking system in the rat directly, not via the pineal melatonin signal.
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