Urinary 6-sulfatoxymelatonin Level in Girls and Its Relationship with Obesity
Overview
Affiliations
Purpose: Short sleep duration is associated with obesity. Urinary 6-sulfatoxymelatonin (6-OHMS), the principal metabolite of melatonin, is closely related with sleep. We evaluated the difference in urinary 6-OHMS levels between obese girls and normal weight girls, and the relationship of urinary 6-OHMS with other hormones regulating body weight and metabolism.
Methods: A total of 79 girls (6.3 to 12.4 years) were included in this study, of whom 34 were obese; 15, overweight; and 30, normal-weight. We examined their pubertal status and bone age. Fasting serum levels of total ghrelin, leptin, insulin, and first morning urinary 6-OHMS were measured. Homeostatic model assessment-insulin resistance (HOMA-IR) was calculated from the fasting insulin and glucose levels.
Results: There was no significant difference in the creatinine adjusted 6-OHMS levels between the obese girls and the control group. Urinary 6-OHMS did not show any correlations with body mass index (BMI), BMI percentile, total ghrelin, leptin, and HOMA-IR. Negative correlations were found between urinary 6-OHMS levels and chronological and bone ages.
Conclusion: Our results suggest that melatonin production is not reduced consistently in obese girls.
Overberg J, Kalveram L, Keller T, Krude H, Kuhnen P, Wiegand S Int J Obes (Lond). 2022; 46(5):1051-1058.
PMID: 35140394 PMC: 9050511. DOI: 10.1038/s41366-022-01077-4.
Ejaz H, Figaro J, Woolner A, Thottakam B, Galley H Front Endocrinol (Lausanne). 2021; 11:623038.
PMID: 33679607 PMC: 7930478. DOI: 10.3389/fendo.2020.623038.
The effects of sleep and light at night on melatonin in adolescents.
Hersh C, Sisti J, Richiutti V, Schernhammer E Hormones (Athens). 2015; 14(3):399-409.
PMID: 26233931 PMC: 5857294. DOI: 10.14310/horm.2002.1564.
Arslan N, Sayin O, Tokgoz Y J Endocrinol Invest. 2014; 37(11):1091-7.
PMID: 25200997 DOI: 10.1007/s40618-014-0160-z.