Evidence map›Paper›PMID 22745491›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2012

Period coding of Bmal1 oscillators in the suprachiasmatic nucleus.

Jihwan Myung, Sungho Hong, Fumiyuki Hatanaka, Yoshihiro Nakajima, Erik De Schutter, Toru Takumi

Abstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

52 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Neuropeptidergic Input from the Lateral Hypothalamus to the Suprachiasmatic Nucleus Alters the Circadian Period in Mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  8. Article
  9. Article
  10. The seasons within: a theoretical perspective on photoperiodic entrainment and encoding.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2024
    Review
  11. Review
  12. Article
  13. Article
  14. Daily coordination of orexinergic gating in the rat superior colliculus-Implications for intrinsic clock activities in the visual system.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021
    Article
  15. Article
  16. Article
  17. Nonlinear phenomena in models of the circadian clock.Journal of the Royal Society, Interface · 2020
    Article
  18. Seasonally variant gene expression in full-term human placenta.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2020
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Jihwan MyungOsaka Bioscience Institute, Suita, Osaka 565-0874, Japan.
Sungho Hong
Fumiyuki Hatanaka
Yoshihiro Nakajima
Erik De Schutter
Toru Takumi

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Circadian oscillators in the suprachiasmatic nucleus (SCN) collectively orchestrate 24 h rhythms in the body while also coding for seasonal rhythms. Although synchronization is required among SCN oscillators to provide robustness for regular timekeeping (Herzog et al., 2004), heterogeneity of period and phase distributions is needed to accommodate seasonal variations in light duration (Pittendrigh and Daan, 1976b). In the mouse SCN, the heterogeneous phase distribution has been recently found in the cycling of clock genes Period 1 and Period 2 (Per1, Per2) and has been shown to reorganize by relative day lengths (Inagaki et al., 2007). However, it is not yet clearly understood what underlies the spatial patterning of Per1 and Per2 expression (Yamaguchi et al., 2003; Foley et al., 2011) and its plasticity. We found that the period of the oscillation in Bmal1 expression, a positive-feedback component of the circadian clock, preserves the behavioral circadian period under culture and drives clustered oscillations in the mouse SCN. Pharmacological and physical isolations of SCN subregions indicate that the period of Bmal1 oscillation is subregion specific and is preserved during culture. Together with computer simulations, we show that either the intercellular coupling does not strongly influence the Bmal1 oscillation or the nature of the coupling is more complex than previously assumed. Furthermore, we have found that the region-specific periods are modulated by the light conditions that an animal is exposed to. Based on these, we suggest that the period forms the basis of seasonal coding in the SCN.

Indexed as

PhotoperiodAction PotentialsAnimalsARNTL Transcription FactorsBiological ClocksBrain MappingCircadian RhythmCluster AnalysisGABA AntagonistsGene Expression RegulationLuminescent ProteinsMiceMice, Inbred C57BLMice, TransgenicModels, NeurologicalMotor ActivityARNTL Transcription FactorsBmal1 protein, mouseGABA AntagonistsgabazineLuminescent ProteinsPeriod Circadian ProteinsPyridazinesSodium Channel BlockersTetrodotoxin

Identifiers

PMID22745491
PMCPMC6622328

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.