Evidence map›Paper›PMID 30814520›Full record

ArticleNPJ schizophrenia2019

Epigenetic clock analysis of blood samples from Japanese schizophrenia patients.

Satoshi Okazaki, Ikuo Otsuka, Shusuke Numata, Tadasu Horai, Kentaro Mouri, Shuken Boku, Tetsuro Ohmori, Ichiro Sora, Akitoyo Hishimoto

Abstract read
In one paragraph

Article in NPJ schizophrenia, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing 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

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

  1. Pooled it
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  5. Review
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  9. Review
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  14. Challenges in Prescribing Clozapine in the Era of COVID-19: A Review Focused on Immunological Implications.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2021
    Review
  15. Article
  16. Article
  17. Article
  18. Epigenetic aging is accelerated in alcohol use disorder and regulated by genetic variation in APOL2.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
    Article
  19. Article
  20. Accelerated aging in serious mental disorders.Current opinion in psychiatry · 2019
    Review
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

9 authors.

Satoshi OkazakiDepartment of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan.
Ikuo OtsukaDepartment of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan.
Shusuke NumataDepartment of Psychiatry, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan.
Tadasu HoraiDepartment of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan.
Kentaro MouriDepartment of Internal Medicine, Division of Biosignal Pathophysiology, Kobe University Graduate School of Medicine, Kobe, Japan.
Shuken BokuDepartment of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan.
Tetsuro OhmoriDepartment of Psychiatry, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan.
Ichiro SoraDepartment of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan.
Akitoyo HishimotoDepartment of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan. hishipon@med.kobe-u.ac.jp.

Funding

MEXT | Japan Society for the Promotion of Science (JSPS) 15K19727MEXT | Japan Society for the Promotion of Science (JSPS) 16K19765MEXT | Japan Society for the Promotion of Science (JSPS) 17H04249MEXT | Japan Society for the Promotion of Science (JSPS) 18K15483MEXT | Japan Society for the Promotion of Science (JSPS) 26461718
6 · The paper itself

Abstract

The accelerated aging hypothesis of schizophrenia (SCZ) has been proposed. DNA methylation profiles were developed for determining "epigenetic age." Here, we assessed intrinsic and extrinsic epigenetic age acceleration (IEAA and EEAA, respectively) in SCZ. We examined two independent cohorts of Japanese ancestry. The first cohort consisted of 80 patients with SCZ under long-term or repeated hospitalization and 40 controls, with the economical DNA pooling technique. The second cohort consisted of 24 medication-free patients with SCZ and 23 controls. Blood of SCZ subjects exhibited decreased EEAA in the first cohort (p = 0.0162), but not in the second cohort. IEAA did not differ in either cohort. We performed replication analyses using publicly available datasets from European ancestry (three blood and one brain datasets). One blood dataset showed increased EEAA in SCZ (p = 0.0228). Overall, our results provide evidence for decreased EEAA in SCZ associated with hospitalization in the Japanese population.

Identifiers

PMID30814520
PMCPMC6393510

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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.