Evidence map›Paper›PMID 29445282›Full record

ArticleNeuropsychiatric disease and treatment2018

Orexin/hypocretin levels in the cerebrospinal fluid and characteristics of patients with myotonic dystrophy type 1 with excessive daytime sleepiness.

Yuki Omori, Takashi Kanbayashi, Aya Imanishi, Ko Tsutsui, Yohei Sagawa, Yuka S Kikuchi, Masahiro Takeshima, Kazuhisa Yoshizawa, Sachiko Uemura, Tetsuo Shimizu

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Neuropsychiatric disease and treatment, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 14% 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

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.

  1. A systematic review of the frequency of sleep evaluations, sleep disorders, and treatments among individuals with muscular dystrophy.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2026
    Pooled it
  2. Review
  3. Article
  4. Article
  5. Review
  6. Comparative Sleep Disturbances in Myotonic Dystrophy Types 1 and 2.Current neurology and neuroscience reports · 2018
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

Yuki OmoriDepartment of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, Japan.
Takashi KanbayashiDepartment of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, Japan.
Aya ImanishiDepartment of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, Japan.
Ko TsutsuiDepartment of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, Japan.
Yohei SagawaDepartment of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, Japan.
Yuka S KikuchiDepartment of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, Japan.
Masahiro TakeshimaDepartment of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, Japan.
Kazuhisa YoshizawaDepartment of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, Japan.
Sachiko UemuraDepartment of Physical Therapy, Akita University Graduate School of Health Sciences, Akita, Japan.
Tetsuo ShimizuDepartment of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, Japan.
Akita University · JPUniversity of Tsukuba · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeMyotonic dystrophy type 1 (DM1) is often characterized by excessive daytime sleepiness (EDS) and sleep-onset rapid eye movement periods caused by muscleblind-like protein 2. The EDS tends to persist even after treatment of sleep apnea. We measured the cerebrospinal fluid (CSF) orexin levels in DM1 patients with EDS and compared the clinical characteristics with narcolepsy type 1 and idiopathic hypersomnia (IHS) patients. PATIENTS AND

methodsWe measured the CSF orexin levels in 17 DM1 patients with EDS and evaluated subjective sleepiness using the Epworth Sleepiness Scale (ESS), objective sleepiness using mean sleep latency (MSL), and sleep apnea using apnea-hypopnea index (AHI). We compared the ESS scores and MSL between decreased (≤200 pg/mL) and normal (>200 pg/mL) CSF orexin group in DM1 patients. Furthermore, we compared the CSF orexin levels, ESS scores, MSL, and AHI among patients with DM1, narcolepsy type 1 (n=46), and IHS (n=30).

resultsSeven DM1 patients showed decreased CSF orexin levels. There were significant differences in the ESS scores and MSL between decreased and normal CSF orexin groups in DM1 patients. The ESS scores showed no significant difference among patients with DM1, narcolepsy type 1, and IHS. The MSL in DM1 and IHS patients were significantly higher than narcolepsy type 1 patients (

conclusionThe CSF orexin levels of DM1 patients moderately decreased compared to those of IHS patients as the control group. However, the EDS of DM1 patients may not be explained by only orexin deficiency.

Indexed as

muscleblind-like proteinmyotonic dystrophy type 1narcolepsyorexinsleep-onset rapid eye movement periods

Identifiers

PMID29445282
PMCPMC5810517
OpenAlexW2791787033

What OpenQuestion holds

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LicenceCC BY-NC
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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.