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Author (up) Lucassen, E. A.; Coomans, C. P.; van Putten, M.; de Kreij, S. R.; van Genugten, J. H.L.T.; Sutorius, R. P.M.; de Rooij, K. E.; van der Velde, M.; Verhoeve, S. L.; Smit, J. W.A.; Löwik, C. W.G.M.; Smits, H. H.; Guigas, B.; Aartsma-Rus, A. M.; Meijer, J. H. url  doi
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  Title Environmental 24-hr Cycles Are Essential for Health Type Journal Article
  Year 2016 Publication Current Biology Abbreviated Journal Current Biology  
  Volume 26 Issue 14 Pages 1843-1853  
  Keywords Animals  
  Abstract Circadian rhythms are deeply rooted in the biology of virtually all organisms. The pervasive use of artificial lighting in modern society disrupts circadian rhythms and can be detrimental to our health. To investigate the relationship between disrupting circadian rhythmicity and disease, we exposed mice to continuous light (LL) for 24 weeks and measured several major health parameters. Long-term neuronal recordings revealed that 24 weeks of LL reduced rhythmicity in the central circadian pacemaker of the suprachiasmatic nucleus (SCN) by 70%. Strikingly, LL exposure also reduced skeletal muscle function (forelimb grip strength, wire hanging duration, and grid hanging duration), caused trabecular bone deterioration, and induced a transient pro-inflammatory state. After the mice were returned to a standard light-dark cycle, the SCN neurons rapidly recovered their normal high-amplitude rhythm, and the aforementioned health parameters returned to normal. These findings strongly suggest that a disrupted circadian rhythm reversibly induces detrimental effects on multiple biological processes.  
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  Series Volume Series Issue Edition  
  ISSN 0960-9822 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1480  
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