Effects of individual housing on circadian rhythms of adult rats
| Autor: | Sticchi R, Gambardella P, Pietro de Franciscis, Diego D'Aponte, Gianfranco Di Renzo, Anna Maria Greco |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
Male
Serotonin medicine.medical_specialty Hypothalamus Experimental and Cognitive Psychology Biology Behavioral Neuroscience chemistry.chemical_compound Corticosterone Internal medicine medicine Animals Circadian rhythm Neurotransmitter 5-HT receptor Tryptophan Rats Inbred Strains Hydroxyindoleacetic Acid Housing Animal Prolactin Circadian Rhythm Rats Endocrinology Social Isolation chemistry Glucocorticoid medicine.drug Hormone |
| Zdroj: | Physiology & Behavior. 45:363-366 |
| ISSN: | 0031-9384 |
| DOI: | 10.1016/0031-9384(89)90141-8 |
| Popis: | Circadian rhythms of hypothalamic serotonin (5HT), its precursor tryptophan (TP) and its metabolite 5-hydroxy-indoleacetic acid (5HIAA), and of prolactin and corticosterone circulating hormones were determined in group-housed and in individually-housed male rats, adapted to a 12:12 light/dark cycle. After 5 weeks of individual housing, 5HT peaked later, TP and 5HIAA peaked earlier, and the mesor level of TP and 5HIAA decreased with respect to group-housed animals. Individual housing caused an increase in the corticosterone mesor level, but did not affect amplitude or acrophase. The circadian rhythm of prolactin was unchanged by individual housing. |
| Databáze: | OpenAIRE |
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