Evidence map›Paper›PMID 19238805›Full record

ArticleSleep2009

CSF histamine contents in narcolepsy, idiopathic hypersomnia and obstructive sleep apnea syndrome.

Takashi Kanbayashi, Tohru Kodama, Hideaki Kondo, Shinsuke Satoh, Yuichi Inoue, Shigeru Chiba, Tetsuo Shimizu, Seiji Nishino

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in Sleep, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05443373 (A Multi-Signal Based Monitoring System for CNS Hypersomnias), which is not on this map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
6.2field-weighted citation impact, top 3% 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.

NCT05443373 unknown statusnot on this mapstarted 2020, after this paper: background citation

A Multi-Signal Based Monitoring System for CNS Hypersomnias : A 10-year Longitudinal Study

TypeobservationalSponsorChang Gung Memorial HospitalRan2020 to 2023Enrolled600ConditionsHypersomnia
3 · Its place in the literature

Who cites it

54 citing papers in PubMed, 169 citations in OpenAlex.

  1. Article
  2. Review
  3. Idiopathic hypersomnia is a 24-hour disorder.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Review
  4. Article
  5. 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
  6. Pathophysiological Models of Hypersomnolence Associated With Depression.Biological psychiatry global open science · 2025
    Review
  7. Article
  8. Modafinil, an atypical CNS stimulant?Advances in pharmacology (San Diego, Calif.) · 2024
    Article
  9. Article
  10. Review
  11. Review
  12. Review
  13. Disrupted nighttime sleep and sleep instability in narcolepsy.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2022
    Review
  14. Article
  15. Review
  16. Article
  17. Review
  18. Review
  19. Review
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 2 countries.

Takashi KanbayashiDepartment of Neuropsychiatry, Akita University School of Medicine, Akita, Japan.
Tohru Kodama
Hideaki Kondo
Shinsuke Satoh
Yuichi Inoue
Shigeru Chiba
Tetsuo Shimizu
Seiji Nishino
Akita University · JPAsahikawa University · JPOsaka Medical and Pharmaceutical University · JPStanford University · USTokyo Metropolitan Institute of Medical Science · JP

Funding

Role of hypocretin/histamine in Narcolepsy/EDS disordersR01MH072525 · NIMH · STANFORD UNIVERSITY · PI NISHINO, SEIJI · 2006 to 2009
$1.3M
Role of Histamine in Narcolepsy/EDS DisordersR03MH079258 · NIMH · STANFORD UNIVERSITY · PI NISHINO, SEIJI · 2007 to 2008
$157k
NIMH NIH HHS R01 MH072525NIMH NIH HHS R01MH072525NIMH NIH HHS R03 MH079258NIMH NIH HHS R03MH079258
6 · The paper itself

Abstract

STUDY

objectiveTo (1) replicate our prior result of low cerebrospinal fluid (CSF) histamine levels in human narcolepsy in a different sample population and to (2) evaluate if histamine contents are altered in other types of hypersomnia with and without hypocretin deficiency.

designCross sectional studies. SETTING AND PATIENTS: Sixty-seven narcolepsy subjects, 26 idiopathic hypersomnia (IHS) subjects, 16 obstructive sleep apnea syndrome (OSAS) subjects, and 73 neurological controls were included. All patients were Japanese. Diagnoses were made according to ICSD-2.

resultsWe found significant reductions in CSF histamine levels in hypocretin deficient narcolepsy with cataplexy (mean +/- SEM; 176.0 +/- 25.8 pg/mL), hypocretin non-deficient narcolepsy with cataplexy (97.8 +/- 38.4 pg/mL), hypocretin non-deficient narcolepsy without cataplexy (113.6 +/- 16.4 pg/mL), and idiopathic hypersomnia (161.0 +/- 29.3 pg/ mL); the levels in OSAS (259.3 +/- 46.6 pg/mL) did not statistically differ from those in the controls (333.8 +/- 22.0 pg/mL). Low CSF histamine levels were mostly observed in non-medicated patients; significant reductions in histamine levels were evident in non-medicated patients with hypocretin deficient narcolepsy with cataplexy (112.1 +/- 16.3 pg/ mL) and idiopathic hypersomnia (143.3 +/- 28.8 pg/mL), while the levels in the medicated patients were in the normal range.

conclusionThe study confirmed reduced CSF histamine levels in hypocretin-deficient narcolepsy with cataplexy. Similar degrees of reduction were also observed in hypocretin non-deficient narcolepsy and in idiopathic hypersomnia, while those in OSAS (non central nervous system hypersomnia) were not altered. The decrease in histamine in these subjects were more specifically observed in non-medicated subjects, suggesting CSF histamine is a biomarker reflecting the degree of hypersomnia of central origin.

Indexed as

AdultAgedAged, 80 and overAntidepressive AgentsCataplexyCentral Nervous System StimulantsCross-Sectional StudiesDisorders of Excessive SomnolenceFemaleHistamineHumansIntracellular Signaling Peptides and ProteinsMaleMiddle AgedNarcolepsyNervous System DiseasesAntidepressive AgentsCentral Nervous System StimulantsHistamineIntracellular Signaling Peptides and ProteinsNeuropeptidesOrexins

Identifiers

PMID19238805
PMCPMC2635582
OpenAlexW1493410983

What OpenQuestion holds

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Registered trials

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.