Cited by 230Circadian rhythm and melatoninSleep and Wakefulness ResearchSleep and Work-Related Fatigue

Evidence for Neuronal Desynchrony in the Aged Suprachiasmatic Nucleus Clock

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Farajnia, Sahar, Michel, Stephan, Deboer, Tom, vanderLeest, Henk Tjebbe, Houben, Thijs, Rohling, Jos H. T., Ramkisoensing, Ashna, Yasenkov, Roman +1 more·2012·The Journal of Neuroscience

Abstract

Aging is associated with a deterioration of daily (circadian) rhythms in physiology and behavior. Deficits in the function of the central circadian pacemaker in the suprachiasmatic nucleus (SCN) have been implicated, but the responsible mechanisms have not been clearly delineated. In this report, we characterize the progression of rhythm deterioration in mice to 900 d of age. Longitudinal behavioral and sleep–wake recordings in up to 30-month-old mice showed strong fragmentation of rhythms, starting at the age of 700 d. Patch-clamp recordings in this age group revealed deficits in membrane properties and GABAergic postsynaptic current amplitude. A selective loss of circadian modulation of fast delayed-rectifier and A-type K+currents was observed. At the tissue level, phase synchrony of SCN neurons was grossly disturbed, with some subpopulations peaking in anti-phase and a reduction in amplitude of the overall multiunit activity rhythm. We propose that aberrant SCN rhythmicity in old animals—with electrophysiological arrhythmia at the single-cell level and phase desynchronization at the network level—can account for defective circadian function with aging.

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Crossref · 10.1523/jneurosci.0469-12.2012

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  • These SCN network changes result in desynchronization and a reduction in the amplitude of neuronal activity rhythms and, ultimately, physiological and behavioural rhythms.

    “These SCN network changes result in desynchronization and a reduction in the amplitude of neuronal activity rhythms248,249 and, ultimately, physiological and behavioural rhythms241.”
  • Some SCN cells become silent in older animals, and SCN neurons lose phase coherence with age.

    “some SCN cells become silent in older animals (as measured in vitro), and SCN neurons lose phase coherence with age247,248”

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Authors
Farajnia, S., Michel, S., Deboer, T., vanderLeest, H. T., Houben, T., Rohling, J. H. T., Ramkisoensing, A., Yasenkov, R., & Meijer, J. H.
Affiliations
Leiden University Medical Center (NL)
Corresponding author
Meijer, Johanna H.
Venue
The Journal of Neuroscience
Published
2012-04-25
Volume
32
Issue
17
Pages
5891-5899
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1969904423
Cited by
230
References
49
Citations by year
2026: 13 · 2025: 20 · 2024: 10 · 2023: 24 · 2022: 11 · 2021: 18 · 2020: 15 · 2019: 17 · 2018: 13 · 2017: 16 · 2016: 21 · 2015: 21 · 2014: 14 · 2013: 14 · 2012: 3
FWCI
7.36
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Surrey Research Insight Open Access (The University of Surrey) (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Leiden Repository (Leiden University) (submittedVersion)
Funders
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (818.02.016)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
Keywords
suprachiasmatic nucleus, phase synchronization, circadian pacemaker, delayed rectifier potassium current, A-type potassium current, antiphase oscillations
MeSH terms
Action Potentials, Age Factors, Aging, Analysis of Variance, Animals, Biophysics, Circadian Rhythm, Electric Stimulation, Electroencephalography, Electromyography, Male, Mice, Inbred C57BL, Motor Activity, Neurons, Periodicity, Sleep, Sleep Deprivation, Suprachiasmatic Nucleus, Wakefulness, Patch-Clamp Techniques, Tetraethylammonium, Potassium Channel Blockers, Mice, In Vitro Techniques

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