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13 January 2022

Chronodisruption: Origin, Roots, and Developments of an 18-Year-Old Concept. Comment on Desmet et al. Time-Restricted Feeding in Mice Prevents the Disruption of the Peripheral Circadian Clocks and Its Metabolic Impact during Chronic Jetlag. Nutrients 2021, 13, 3846

,
and
1
Institute and Policlinic for Occupational Medicine, Environmental Medicine and Prevention Research, Faculty of Medicine and University Hospital Cologne, University of Cologne, Kerpener Str. 61, D-50938 Cologne, Germany
2
Department of Cell Systems and Anatomy, UT Health San Antonio, San Antonio, TX 78229, USA
*
Author to whom correspondence should be addressed.
Nutrients2022, 14(2), 315;https://doi.org/10.3390/nu14020315
This article belongs to the Special Issue Nutrition, Circadian Disruption and Cardiometabolic Health
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We read with interest the article by Desmet and colleagues entitled “Time-Restricted Feeding in Mice Prevents the Disruption of the Peripheral Circadian Clocks and Its Metabolic Impact during Chronic Jetlag” [1]. A key focus is “chronodisruption”—used some 18 times as “a disruption of the circadian system”—and the authors refer to “chronodisruptors”, for which they include a reference [2]. Since chronodisruption (CD) itself is not explicitly referenced, may we complement their work with publications in which the concept was first proposed in 2003 [3] and systematically developed thereafter?
More generally, CD was conceptualized as a relevant disruption of an otherwise beneficial circadian organization of physiology, endocrinology, metabolism, and behavior by ordered sequences of biological rhythms during sleep and wake cycles. Since the term was coined [3], CD was—step-by-step—put into thematic and historical context with Pittendrigh’s insights as a nestor of modern chronobiology [2,4], included in cancer theory development [5], investigated in shift workers [5,6,7] and flight personnel [6], defined in further detail [2], operationalized as split nexus of internal and external times [8], included in metrics to compute CD doses (Computing chronodisruption—Computing circadian misalignment—Computing sleep deficiency) [7,9,10], contrasted with the concept of social jetlag [9,10], and conceptualized as a ubiquitous causal phenomenon at both work and play [11] (Table 1). Beyond epidemiological contexts, the CD concept is increasingly used, and explored, in experimental research and in more and more journals [12,13].
Table 1. Origin, roots, and developments of the term and concept of chronodisruption.
Clearly, we appreciate the work by Desmet and colleagues. Equally clearly, that CD is a widely used and useful concept is also evinced by citation statistics: as of 3 December 2021, Web of Science indicates that publications that explicitly regard the topic chrondisruption accumulate an h-index of 40 [14].
Overall, that our internal 24 h (circadian) timing systems coordinate countless fundamental physiological processes and that their disruptions may lead to adverse health effects such as obesity [15], diabetes, cardiovascular disease, kidney disease [16], psychiatric disorders, detrimental pregnancy outcomes [17], and, plausibly, cancer [18] can make chronodisruption a prime target for research. An appropriate way to facilitate learning about, challenging, falsifying, or expanding the concept of CD may be to offer source references for its origin [3], roots, and developments (such as in Table 1, [16], and this comment).

Author Contributions

Conceptualization, T.C.E.; writing—original draft, T.C.E.; writing—review and editing, T.C.E., C.P. and R.J.R.; All authors have read and agreed to the published version of the manuscript.

Funding

This research received no external funding.

Institutional Review Board Statement

Not applicable.

Conflicts of Interest

The authors declare no conflict of interest.

References

  1. Desmet, L.; Thijs, T.; Mas, R.; Verbeke, K.; Depoortere, I. Time-Restricted Feeding in Mice Prevents the Disruption of the Peripheral Circadian Clocks and Its Metabolic Impact during Chronic Jetlag. Nutrients 2021, 13, 3846. [Google Scholar] [CrossRef]
  2. Erren, T.C.; Reiter, R.J. Defining chronodisruption. J. Pineal Res. 2009, 46, 245–247. [Google Scholar]
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  4. Pittendrigh, C.S. Circadian rhythms and the circadian organization of living systems. Cold Spring Harb. Symp. Quant. Biol. 1960, 25, 159–184. [Google Scholar]
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  8. Erren, T.C.; Reiter, R.J. Revisiting chronodisruption: When the physiological nexus between internal and external times splits in humans. Naturwissenschaften 2013, 100, 291–298. [Google Scholar] [CrossRef]
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  14. Web of Science. Cited Reference Search: Chronodisruption—221 Publications; h-Index: 40. 2021. Available online: https://www.webofscience.com/wos/woscc/summary/69214188-629b-4dc3-a25c-6b375d9a4ba1-1d542a4e/relevance/1 (accessed on 3 December 2021).
  15. Basolo, A.; Bechi Genzano, S.; Piaggi, P.; Krakoff, J.; Santini, F. Energy Balance and Control of Body Weight: Possible Effects of Meal Timing and Circadian Rhythm Dysregulation. Nutrients 2021, 13, 3276. [Google Scholar] [CrossRef]
  16. Carriazo, S.; Ramos, A.M.; Sanz, A.B.; Sanchez-Niño, M.D.; Kanbay, M.; Ortiz, A. Chronodisruption: A Poorly Recognized Feature of CKD. Toxins 2020, 12, 151. [Google Scholar] [CrossRef] [Green Version]
  17. Loy, S.L.; Loo, R.S.X.; Godfrey, K.M.; Chong, Y.S.; Shek, L.P.; Tan, K.H.; Chong, M.F.; Chan, J.K.Y.; Yap, F. Chrononutrition during Pregnancy: A Review on Maternal Night-Time Eating. Nutrients 2020, 12, 2783. [Google Scholar] [CrossRef]
  18. Lewis, P.; Foster, R.G.; Erren, T.C. Ticking time bomb? High time for chronobiological research. EMBO Rep. 2018, 19, e46073. [Google Scholar] [CrossRef]
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