Circadian rhythmicity of pain sensitivity in humans - Équipe WAKING, Physiologie Intégrée du Système d'Éveil du Centre de Recherche en Neurosciences de Lyon Accéder directement au contenu
Article Dans Une Revue Brain - A Journal of Neurology Année : 2022

Circadian rhythmicity of pain sensitivity in humans

Résumé

Pain intensity has been reported to fluctuate during the day in some experimental and clinical conditions, but the mechanisms underlying these fluctuations are unknown. Although the circadian timing system is known to regulate a wide range of physiological functions, its implication in pain regulation is unknown. Using highly controlled laboratory constant routine conditions, we show that pain sensitivity is rhythmic over the 24-hours and strongly controlled by the endogenous circadian timing system. We found that the circadian component of pain sensitivity can be modelled with a sinusoidal function, with a maximum in the middle of the night and a minimum in the afternoon. We also found a weak homeostatic control of pain sensitivity, with a linear increase over the 34 hours of prolonged wakefulness, which slowly builds up with sleep pressure. Using mathematical modelling, we describe that the circadian system accounts for ~80% of the full magnitude of pain sensitivity over the 24 hours, and that sleep-related processes account for only ~20%. Overall, our data reveal that the neurobiological mechanisms involved in driving the rhythmicity of pain perception in humans, with the oscillating time-piece located in the suprachiasmatic nuclei. Our findings highlight the need to consider the time of day in pain assessment, and suggest that personalized circadian medicine may be a promising approach to pain management.
Fichier principal
Vignette du fichier
DAGUET-GRONFIER_Brain_Main&SI_AuthorsOriginalVersion-19dec21_Un-refereed.pdf (3.73 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Commentaire : Ce pdf est la version preprint de l'article (version soumise à l'éditeur, avant peer-reviewing)

Dates et versions

hal-03651567 , version 1 (25-04-2022)
hal-03651567 , version 2 (09-09-2022)

Identifiants

Citer

Inès Daguet, Véronique Raverot, Didier Bouhassira, Claude Gronfier. Circadian rhythmicity of pain sensitivity in humans. Brain - A Journal of Neurology , 2022, 145 (9), pp.3225-3235. ⟨10.1093/brain/awac147⟩. ⟨hal-03651567v2⟩
227 Consultations
364 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More