Abstract：
:The endogenous circadian clock drives oscillations that are completely synchronized with the environmental day-night rhythms with a period of approximately 24 hours. Temporal misalignment between one's internal circadian clock and the external solar time often occurs in shift workers and long-distance travelers; such misalignments are accompanied by sleep disturbances and gastrointestinal distress. Repeated exposure to jet lag and rotating shift work increases the risk of lifestyle-related diseases, such as cardiovascular complaints and metabolic insufficiencies. However, the mechanism behind the disruption of one's internal clock is not well understood. In this paper, we therefore present a new theoretical concept called "jet lag separatrix" to understand circadian clock disruption and slow recovery from jet lag based on the mathematical model describing the hierarchical structure of the circadian clock. To demonstrate the utility of our theoretical study, we applied it to predict that re-entrainment via a two-step jet lag in which a four-hour shift of the light-dark cycle is given in the span of two successive days requires fewer days than when given as a single eight-hour shift. We experimentally verified the feasibility of our theory in C57BL/6 strain mice, with results indicating that this pre-exposure of jet lag is indeed beneficial.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Kori H,Yamaguchi Y,Okamura Hdoi
10.1038/srep46702subject
Has Abstractpub_date
2017-04-26 00:00:00pages
46702issn
2045-2322pii
srep46702journal_volume
7pub_type
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