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J Environ Sci (China). 2017 Dec;62:133-137. doi: 10.1016/j.jes.2017.10.013. Epub 2017 Oct 27.

Exposure to endocrine disrupting chemicals perturbs lipid metabolism and circadian rhythms.

Author information

1
Institute for Environmental Studies (IVM), VU University Amsterdam, 1081, HV, The Netherlands. Electronic address: renate.kopp@gmail.com.
2
Biology and Environmental Toxicology Group, Faculty of Sciences, National Distance Education University, 28015 Madrid, Spain.
3
Institute for Environmental Studies (IVM), VU University Amsterdam, 1081, HV, The Netherlands.
4
Institute for Environmental Studies (IVM), VU University Amsterdam, 1081, HV, The Netherlands; Institute for Environment, Health and Societies, College of Health and Life Sciences, Brunel University London, Uxbridge, UB8 3PH, United Kingdom. Electronic address: juliette.legler@brunel.ac.uk.

Abstract

A growing body of evidence indicates that exposure to environmental chemicals can contribute to the etiology of obesity by inappropriately stimulating adipogenesis as well as perturbing lipid metabolism and energy balance. One potential mechanism by which chemical exposure can influence lipid metabolism is through disturbance of circadian rhythms, endogenously-driven cycles of roughly 24hr in length that coordinate biochemical, physiological, and behavioral processes in all organisms. Here we show for the first time that exposure to endocrine disrupting compounds (EDCs), including the pesticide tributyltin, two commercial flame retardants, and a UV-filter chemical found in sunscreens, can perturb both circadian clocks and lipid metabolism in vertebrates. Exposure of developing zebrafish to EDCs affects core clock activity and leads to a remarkable increase in lipid accumulation that is reminiscent of the effects observed for longdaysin, a known disruptor of circadian rhythms. Our data reveal a novel obesogenic mechanism of action for environmental chemicals, an observation which warrants further research. Because circadian clocks regulate a wide variety of physiological processes, identification of environmental chemicals capable of perturbing these systems may provide important insights into the development of environmentally-induced metabolic disease.

KEYWORDS:

adiposity; clock genes; flame retardants; tributyltin; zebrafish

PMID:
29289284
DOI:
10.1016/j.jes.2017.10.013
[Indexed for MEDLINE]

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