| Autor: |
Armando L, Morera-Fumero, Pedro, Abreu-González, Manuel, Henry-Benítez, Estefanía, Díaz-Mesa, Silvia, Yelmo-Cruz, Ramón, Gracia-Marco |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Actas espanolas de psiquiatria. 41(3) |
| ISSN: |
1578-2735 |
| Popis: |
The search for biological markers of individual characteristics has produced scanty results. Melatonin (MLT), the main hormonal product of the pineal gland, has been used as a biological marker of neuroticism, introversion-extroversion and morningness-eveningness. Morningness-eveningness indicates preferences associated with morning or evening activities. The goal of this research is to study if serum MLT levels are related to morningness-eveningness preference.Twenty-three morning type and twenty-one evening type healthy volunteers took part in the study. Morningness-eveningness was evaluated with the Composite Scale of Morningness. Blood was drawn at 09:00, 12:00 and 00:00 h. MLT levels were measured with an ELISA.At 09:00 h evening type subjects had significantly higher serum MLT levels than morning type subjects (8.4±3.6 pg./ml. vs. 4.6±3.2 pg./ml., p0.02).Morning serum MLT may be used as a biological peripheral marker of morningness-eveningness preference. Our results emphasise the convenience of expanding MLT studies until 09:00 h when differences between morning type and evening type subjects may still be found. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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