Evidence map›Paper›PMID 24454829›Full record

ArticlePloS one2014

Altered dynamics in the circadian oscillation of clock genes in dermal fibroblasts of patients suffering from idiopathic hypersomnia.

Julian Lippert, Hartmut Halfter, Anna Heidbreder, Dominik Röhr, Burkhard Gess, Mathias Boentert, Nani Osada, Peter Young

Abstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
–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

21 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Current knowledge on the pathophysiology of idiopathic hypersomnia and potential mechanisms of action for low-sodium oxybate treatment.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Review
  5. Pathophysiological Models of Hypersomnolence Associated With Depression.Biological psychiatry global open science · 2025
    Review
  6. Article
  7. Teleworking during a pandemic: perspective of an idiopathic hypersomnia patient.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2022
    Article
  8. Review
  9. Article
  10. The Impact of the Circadian Clock on Skin Physiology and Cancer Development.International journal of molecular sciences · 2021
    Review
  11. Article
  12. Review
  13. Central Disorders of Hypersomnolence.Continuum (Minneapolis, Minn.) · 2020
    Review
  14. Article
  15. Is Idiopathic Hypersomnia a Circadian Rhythm Disorder?Current sleep medicine reports · 2019
    Article
  16. Article
  17. Clinical update on central hypersomnias.Journal of thoracic disease · 2018
    Review
  18. Idiopathic Hypersomnia.Sleep medicine clinics · 2017
    Review
  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

8 authors.

Julian LippertUniversity Hospital Muenster, Department of Neurology - Sleepmedicine and Neuromuscular Diseases, Albert-Schweitzer-Campus 1, Münster, Germany.
Hartmut HalfterUniversity Hospital Muenster, Department of Neurology - Sleepmedicine and Neuromuscular Diseases, Albert-Schweitzer-Campus 1, Münster, Germany.
Anna HeidbrederUniversity Hospital Muenster, Department of Neurology - Sleepmedicine and Neuromuscular Diseases, Albert-Schweitzer-Campus 1, Münster, Germany.
Dominik RöhrUniversity Hospital Muenster, Department of Neurology - Sleepmedicine and Neuromuscular Diseases, Albert-Schweitzer-Campus 1, Münster, Germany.
Burkhard GessUniversity Hospital Muenster, Department of Neurology - Sleepmedicine and Neuromuscular Diseases, Albert-Schweitzer-Campus 1, Münster, Germany.
Mathias BoentertUniversity Hospital Muenster, Department of Neurology - Sleepmedicine and Neuromuscular Diseases, Albert-Schweitzer-Campus 1, Münster, Germany.
Nani OsadaInstitute of Medical Informatics, Albert-Schweitzer-Campus 1, Münster, Germany.
Peter YoungUniversity Hospital Muenster, Department of Neurology - Sleepmedicine and Neuromuscular Diseases, Albert-Schweitzer-Campus 1, Münster, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

From single cell organisms to the most complex life forms, the 24-hour circadian rhythm is important for numerous aspects of physiology and behavior such as daily periodic fluctuations in body temperature and sleep-wake cycles. Influenced by environmental cues - mainly by light input -, the central pacemaker in the thalamic suprachiasmatic nuclei (SCN) controls and regulates the internal clock mechanisms which are present in peripheral tissues. In order to correlate modifications in the molecular mechanisms of circadian rhythm with the pathophysiology of idiopathic hypersomnia, this study aimed to investigate the dynamics of the expression of circadian clock genes in dermal fibroblasts of idiopathic hypersomniacs (IH) in comparison to those of healthy controls (HC). Ten clinically and polysomnographically proven IH patients were recruited from the department of sleep medicine of the University Hospital of Muenster. Clinical diagnosis was done by two consecutive polysomnographies (PSG) and Multiple Sleep Latency Test (MSLT). Fourteen clinical healthy volunteers served as control group. Dermal fibroblasts were obtained via punch biopsy and grown in cell culture. The expression of circadian clock genes was investigated by semiquantitative Reverse Transcriptase-PCR qRT-PCR analysis, confirming periodical oscillation of expression of the core circadian clock genes BMAL1, PER1/2 and CRY1/2. The amplitude of the rhythmically expressed BMAL1, PER1 and PER2 was significantly dampened in dermal fibroblasts of IH compared to HC over two circadian periods whereas the overall expression of only the key transcriptional factor BMAL1 was significantly reduced in IH. Our study suggests for the first time an aberrant dynamics in the circadian clock in IH. These findings may serve to better understand some clinical features of the pathophysiology in sleep - wake rhythms in IH.

Indexed as

AdultCircadian ClocksFemaleFibroblastsGene Expression RegulationHumansIdiopathic HypersomniaMaleSkin

Identifiers

PMID24454829
PMCPMC3891749

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Registered trials

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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.