Melatonin modulates the ERG circadian rhythm in crayfish
| Autor: | Héctor Solís-Chagoyán, Beatriz Fuentes-Pardo, Leonor Mendoza-Vargas |
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| Rok vydání: | 2007 |
| Předmět: |
endocrine system
medicine.medical_specialty Light Signal Transduction Time Factors genetic structures Light Physiology Receptor potential Astacoidea In Vitro Techniques Biochemistry Membrane Potentials Melatonin Internal medicine medicine Electroretinography Animals Circadian rhythm Molecular Biology Procambarus clarkii biology biology.organism_classification Crayfish eye diseases Circadian Rhythm Endocrinology Light effects on circadian rhythm Darkness sense organs Erg hormones hormone substitutes and hormone antagonists Photic Stimulation medicine.drug Photoreceptor Cells Vertebrate |
| Zdroj: | Comparative biochemistry and physiology. Part A, Molecularintegrative physiology. 149(4) |
| ISSN: | 1531-4332 |
| Popis: | One of the most important functions modulated by melatonin is the synchronization of circadian rhythms. In crayfish (Procambarus clarkii), we have obtained evidence that the amplitude of the electrical response to light of the retinal photoreceptors the receptor potential, is modified by the action of melatonin and that the magnitude of this action depends on the circadian time of melatonin application. In contrast, the electroretinogram (ERG) circadian rhythm can be synchronized by either single or periodic melatonin application. In this work we hypothesized that, in crayfish, melatonin acts on effectors and on pacemaker of ERG circadian rhythm as a non-photic synchronizer. Melatonin could be a hormone that sends a signal of darkness to the ERG circadian system. |
| Databáze: | OpenAIRE |
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