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The effect of the cannabinoid receptor agonist and antagonist on the light-induced changes in the suprachiasmatic nucleus of rats
E. Filipovská, K. Červená, S. Moravcová, J. Novotný, H. Kyclerová, V. Spišská, D. Pačesová, Z. Bendová,
Neuroscience letters.
2019 ;
703 (-) :
49-52.
[pub] 20190315
Language English Country Ireland
Document type Journal Article, Research Support, Non-U.S. Gov't
Persistent link
https://www.medvik.cz/link/bmc19044936
- MeSH
- Cannabinoid Receptor Agonists pharmacology MeSH
- Cannabinoid Receptor Antagonists pharmacology MeSH
- Cyclohexanols pharmacology MeSH
- Suprachiasmatic Nucleus drug effects physiology radiation effects MeSH
- Piperidines pharmacology MeSH
- Motor Activity drug effects radiation effects MeSH
- Rats, Wistar MeSH
- Pyrazoles pharmacology MeSH
- Light MeSH
- Animals MeSH
- Check Tag
- Male MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
The CB1 cannabinoid receptors have been found in the rodent suprachiasmatic nucleus, and their activation suppresses the light-induced phase shift in locomotor rhythmicity of mice and hamsters. Here, we show that the CB1 receptor agonist CP55940 significantly attenuates the light-induced phase delay in rats as well. Furthermore, it blocks the light induction of c-Fos and light-induced downregulation of pERK1/2 in the SCN, and the CB1 antagonist AM251 prevents the photic induction of pERK1/2 and reduces pGSK3β after photic stimulation. Our data suggest that the modulation of the cannabinoid receptor activity may affect the photic entrainment via the setting of the SCN sensitivity to light.
References provided by Crossref.org
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