| Full text | |
| Author(s): |
Vieira, R. P. O.
[1]
;
Nehme, P. X. S. A.
[1]
;
Marqueze, E. C.
[1, 2]
;
Amaral, F. G.
[3]
;
Cipolla-Neto, J.
[4, 5]
;
Moreno, C. R. C.
[1, 6]
Total Authors: 6
|
| Affiliation: | [1] Univ Sao Paulo, Sch Publ Hlth, Dept Hlth Life Cycles & Soc, Sao Paulo - Brazil
[2] Catolica Univ Santos, Publ Hlth Grad Program, Santos, SP - Brazil
[3] Univ Fed Sao Paulo, Dept Physiol, Sao Paulo - Brazil
[4] Univ Sao Paulo, Inst Biomed Sci, Sao Paulo - Brazil
[5] Abu Dhabi Univ, Coll Hlth Sci, Abu Dhabi - U Arab Emirates
[6] Stockholm Univ, Psychol Dept, Stockholm - Sweden
Total Affiliations: 6
|
| Document type: | Journal article |
| Source: | CHRONOBIOLOGY INTERNATIONAL; v. 38, n. 8, p. 1170-1176, AUG 3 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Night work can lead to social jetlag (SJL), which can be briefly defined as the difference between social and biological time. In this sense, SJL has been viewed as a proxy for circadian misalignment. Studies have suggested that SJL may modify physiological processes, such as blood pressure, glucose metabolism, cortisol, and melatonin production. Therefore, we aimed to verify the correlation between SJL and nocturnal inhibition of melatonin production estimated by the concentration of its urinary metabolite (6-sulfatoximelatonin). The study included day workers (n = 9) and night workers (n = 13) from a public maternity hospital in the city of Sao Paulo. A questionnaire was used to obtain sociodemographic data, life habits, working conditions, and the Munich Chronotype Questionnaire (MCTQ(shift)) was used to assess chronotype. Urine was collected on workdays and days off to estimate the concentration of 6-sulfatoximelatonin (aMT6s), quantified by the ELISA method. We found SJL 13 times higher for night workers (10.6 h) than day workers (0.8 h). The excretion of aMT6s in night workers was statistically different on workdays as opposed to days off, with the lowest excretion on workdays, as expected. SJL was correlated with the aMT6s's delta between the night off and night on among night workers, indicating that the higher is the SJL, the lower is the melatonin production. As expected, social jetlag was higher among night workers, compared to day workers. Moreover, our findings showed that melatonin concentration is directly correlated with SJL. (AU) | |
| FAPESP's process: | 14/50457-0 - Melatonin and the control of energy metabolism: basic, clinical and epidemiological research |
| Grantee: | José Cipolla Neto |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 19/24327-5 - Melatonin physiology and pathophysiology, basic and clinical studies: characterization of the primary and secundary Hypomelatoninemia Syndromes |
| Grantee: | José Cipolla Neto |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 16/11155-3 - Lifestyle, food intake, and health of rubber tappers and day and night workers living in urban environments. |
| Grantee: | Claudia Roberta de Castro Moreno |
| Support Opportunities: | Regular Research Grants |