Evidence map›Paper›PMID 18595438›Full record

ArticleJournal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine2008

Increased heart rate variability but normal resting metabolic rate in hypocretin/orexin-deficient human narcolepsy.

Rolf Fronczek, Sebastiaan Overeem, Robert Reijntjes, Gert Jan Lammers, J Gert van Dijk, Hanno Pijl

Open access · greenAbstract read
In one paragraph

Article in Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 15% of its field
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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 74 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Sympathetic neural responses to sleep disorders and insufficiencies.American journal of physiology. Heart and circulatory physiology · 2022
    Review
  9. Article
  10. Autonomic symptoms, cardiovascular and sudomotor evaluation in de novo type 1 narcolepsy.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2020
    Article
  11. Article
  12. Review
  13. Article
  14. The neurobiological basis of narcolepsy.Nature reviews. Neuroscience · 2019
    Review
  15. Article
  16. Autonomic regulation during sleep and wakefulness: a review with implications for defining the pathophysiology of neurological disorders.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2018
    Review
  17. The link between narcolepsy and autonomic cardiovascular dysfunction: a translational perspective.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2018
    Review
  18. Article
  19. Review
  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 at 1 institution in 1 country.

Rolf FronczekDepartment of Neurology and Clinical Neurophysiology, Leiden University Medical Centre, Leiden, The Netherlands. r.fronczek@lumc.nl
Sebastiaan Overeem
Robert Reijntjes
Gert Jan Lammers
J Gert van Dijk
Hanno Pijl
Leiden University Medical Center · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectivesWe investigated autonomic balance and resting metabolic rate to explore their possible involvement in obesity in hypocretin/orexin-deficient narcoleptic subjects.

methodsResting metabolic rate (using indirect calorimetry) and variability in heart rate and blood pressure were determined in the fasted resting state. Subjects included 15 untreated, hypocretin-deficient male narcoleptics and 15 male controls matched for age and body mass index.

resultsSpectral power analysis revealed greater heart rate and blood pressure variability in hypocretin-deficient male narcoleptic patients (heart rate: p = 0.01; systolic blood pressure: p = 0.02; diastolic: p < 0.01). The low to high frequency ratio of heart rate power did not differ between groups (p = 0.48), nor did resting metabolic rate (controls: 1767 +/- 226 kcal/24 h; patients: 1766 +/- 227 kcal/24h; p = 0.99).

conclusionsResting metabolic rate was not reduced in hypocretin-deficient narcoleptic men and therefore does not explain obesity in this group. Whether the increased heart rate and blood pressure variability--suggesting reduced sympathetic tone--is involved in this regard remains to be elucidated.

Indexed as

RestAdultAgedBody Mass IndexHeart RateHumansIntracellular Signaling Peptides and ProteinsMaleMiddle AgedNarcolepsyNeuropeptidesOrexinsOxygen ConsumptionIntracellular Signaling Peptides and ProteinsNeuropeptidesOrexins

Identifiers

PMID18595438
PMCPMC2546458
OpenAlexW2142422187

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.