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Self-reported sleep duration, white blood cell counts and cytokine profiles in European adolescents: the HELENA study.

AutorPérez de Heredia, F. ; Gómez Martínez, Sonia ; Díaz, L. E. ; Marcos, Ascensión
Palabras claveCytokine balance
Sleep duration
Immune cell profile
Inflammation
Th1/Th2
Adolescents
Gender differences
Fecha de publicación2014
EditorElsevier
CitaciónSleep Medicine 15: 1251- 1258 (2014)
ResumenBACKGROUND: Sleep patterns face important changes during adolescence. This can have implications for the immune system, which is regulated by the sleep-wake cycle; however, most studies relating sleep and immune system have been conducted on adults. OBJECTIVE: To study the relationships between sleep duration, immune cell counts, and cytokines in European adolescents participating in the HELENA Cross-Sectional Study. METHODS: Adolescents (12.5-17.5¿years; n¿=¿933; 53.9% girls) were grouped according to self-reported sleep duration into <8, 8-8.9 and ¿9¿h/night. Blood samples were collected in the morning after an overnight fast to analyze counts of white blood cells (WBC), neutrophils, lymphocytes, monocytes, eosinophils, basophils, the lymphocyte subsets CD3(+), CD4(+), CD8(+), CD45RA(+), CD45RO(+), CD3(-)CD16(+)56(+) and CD19(+), and concentrations of cortisol, CRP, IL-1, IL-2, IL-4, IL-5, IL-6, IL-10, TNF-¿ and IFN-¿. Pro-/anti-inflammatory and Th1/Th2 cytokine ratios were calculated. Immune parameters were correlated to sleep duration and compared between the three groups. RESULTS: Sleep duration was negatively associated with cortisol levels and WBC, neutrophil, monocyte, CD4(+) and CD4(+)CD45RO(+) counts; in girls it is also negatively associated with IL-5 and IL-6 levels. The 8-8.9¿h/night group presented the highest IL-4 values and the lowest pro-/anti-inflammatory and Th1/Th2 cytokine ratios. CONCLUSION: A sleep duration of 8-8.9¿h/night was associated with a healthier immune profile in our adolescents.
URIhttp://hdl.handle.net/10261/111436
DOI10.1016/j.sleep.2014.04.010
Identificadoresdoi: 10.1016/j.sleep.2014.04.010
issn: 1389-9457
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