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Int. J. Environ. Res. Public Health 2017, 14(12), 1492; https://doi.org/10.3390/ijerph14121492

Exposure to Night-Time Traffic Noise, Melatonin-Regulating Gene Variants and Change in Glycemia in Adults

1
Swiss Tropical and Public Health Institute, Socinstrasse 57, P.O. Box, CH-4002 Basel, Switzerland
2
University of Basel, Petersplatz 1, CH-4003 Basel, Switzerland
3
Karolinska Institutet, SE-171 77 Stockholm, Sweden
4
Center for Chronobiology, Psychiatric Hospital of the University of Basel, Wilhelm Klein-Strasse 27, 4056 Basel, Switzerland
5
Empa, Laboratory for Acoustics/Noise Control, Swiss Federal Laboratories for Material Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
6
Institute of Clinical Chemistry, University Hospital Zurich, Rämistrasse 100, 8091 Zurich, Switzerland
7
Federal Office for the Environment, 3003 Bern, Switzerland
*
Author to whom correspondence should be addressed.
Received: 8 November 2017 / Revised: 24 November 2017 / Accepted: 29 November 2017 / Published: 1 December 2017
(This article belongs to the Special Issue IJERPH: 15th Anniversary)
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Abstract

Traffic noise has been linked to diabetes, with limited understanding of its mechanisms. We hypothesize that night-time road traffic noise (RTN) may impair glucose homeostasis through circadian rhythm disturbances. We prospectively investigated the relationship between residential night-time RTN and subsequent eight-year change in glycosylated hemoglobin (ΔHbA1c) in 3350 participants of the Swiss Cohort Study on Air Pollution and Lung and Heart Diseases in Adults (SAPALDIA), adjusting for diabetes risk factors and air pollution levels. Annual average RTN (Lnight) was assigned to participants in 2001 using validated Swiss noise models. HbA1c was measured in 2002 and 2011 using liquid chromatography. We applied mixed linear models to explore RTN–ΔHbA1c association and its modification by a genetic risk score of six common circadian-related MTNR1B variants (MGRS). A 10 dB difference in RTN was associated with a 0.02% (0.003–0.04%) increase in mean ΔHbA1c in 2142 non-movers. RTN–ΔHbA1c association was modified by MGRS among diabetic participants (Pinteraction = 0.001). A similar trend in non-diabetic participants was non-significant. Among the single variants, we observed strongest interactions with rs10830963, an acknowledged diabetes risk variant also implicated in melatonin profile dysregulation. Night-time RTN may impair glycemic control, especially in diabetic individuals, through circadian rhythm disturbances. Experimental sleep studies are needed to test whether noise control may help individuals to attain optimal glycemic levels. View Full-Text
Keywords: transportation noise; MTNR1B gene; rs10830963; diabetes; glycosylated hemoglobin; circadian sleep-wake cycle; gene-environment interactions; adults; cohort study transportation noise; MTNR1B gene; rs10830963; diabetes; glycosylated hemoglobin; circadian sleep-wake cycle; gene-environment interactions; adults; cohort study
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Eze, I.C.; Imboden, M.; Foraster, M.; Schaffner, E.; Kumar, A.; Vienneau, D.; Héritier, H.; Rudzik, F.; Thiesse, L.; Pieren, R.; von Eckardstein, A.; Schindler, C.; Brink, M.; Wunderli, J.-M.; Cajochen, C.; Röösli, M.; Probst-Hensch, N. Exposure to Night-Time Traffic Noise, Melatonin-Regulating Gene Variants and Change in Glycemia in Adults. Int. J. Environ. Res. Public Health 2017, 14, 1492.

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