Suprachiasmatic Nucleus–Arcuate Nucleus Axis: Interaction Between Time and Metabolism Essential for Health

In mammals, time and metabolism are tightly coupled variables; this relationship can be illustrated by numerous examples, such as the circadian variation in food intake or the circadian response to a glucose bolus. We review evidence that the interaction between the suprachiasmatic nucleus and the a...

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Bibliographic Details
Published in:Obesity (Silver Spring, Md.) Md.), 2020-07, Vol.28 (S1), p.S10-S17
Main Authors: Méndez‐Hernández, Rebeca, Escobar, Carolina, Buijs, Ruud M.
Format: Article
Language:English
Subjects:
Arcuate Nucleus of Hypothalamus - physiology
Blood pressure
Circadian Rhythm - physiology
Feedback
Female
Food
Glucose
Hormones
Humans
Hypothalamus
Insulin
Male
Mammals
Metabolism
Metabolites
Nervous system
Neurons
Obesity
Peptides
Physiology
Suprachiasmatic Nucleus - physiology
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Summary:In mammals, time and metabolism are tightly coupled variables; this relationship can be illustrated by numerous examples, such as the circadian variation in food intake or the circadian response to a glucose bolus. We review evidence that the interaction between the suprachiasmatic nucleus and the arcuate nucleus plays a key role in the execution of these functions. The nuclei are reciprocally connected via different projections, and this interaction provides an ideal anatomical framework to modify the temporal output of the hypothalamus to metabolic organs as a consequence of the feedback from the periphery. The suprachiasmatic nucleus–arcuate nucleus relationship is essential to integrate metabolic information into the circadian system and thus adapt circadian rhythms in core body temperature, locomotor activity, food intake, and circulating molecules such as glucose and corticosterone. With the rise in obesity‐associated diseases in the world population, gaining knowledge about this relationship, and the consequences of disturbing this liaison, is essential to understand the pathogenesis of obesity.
ISSN:1930-7381
1930-739X
DOI:10.1002/oby.22774