Evidence map›Paper›PMID 38081943›Full record

SynthesisMolecular psychiatry2024

Retina as a potential biomarker in schizophrenia spectrum disorders: a systematic review and meta-analysis of optical coherence tomography and electroretinography.

Hiroshi Komatsu, Goh Onoguchi, Steven M Silverstein, Stefan Jerotic, Atsushi Sakuma, Nobuhisa Kanahara, Yoshihisa Kakuto, Takashi Ono, Takeshi Yabana, Toru Nakazawa and 1 more

Open access · hybridAbstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Molecular psychiatry, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 2 pooled it
11.1field-weighted citation impact, top 1% 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

26 citing papers in PubMed, 2 syntheses or guidelines pooled it, 40 citations in OpenAlex.

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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

11 authors at 6 institutions in 3 countries.

Hiroshi KomatsuDepartment of Psychiatry, Tohoku University Hospital, Sendai, Japan. hkomatsu1019@gmail.com.ORCID 0000-0002-7602-0281
Goh OnoguchiDepartment of Psychiatry, Tohoku University Graduate School of Medicine, Sendai, Japan.
Steven M SilversteinDepartment of Psychiatry, University of Rochester Medical Center, Rochester, NY, USA.
Stefan JeroticClinic for Psychiatry, University Clinical Centre of Serbia, Belgrade, Serbia.
Atsushi SakumaDepartment of Psychiatry, Tohoku University Graduate School of Medicine, Sendai, Japan.
Nobuhisa KanaharaDepartment of Psychiatry, Chiba University Graduate School of Medicine, Chiba, Japan.ORCID 0000-0001-8550-8003
Yoshihisa KakutoMiyagi Psychiatric Center, Natori, Japan.
Takashi OnoMiyagi Psychiatric Center, Natori, Japan.
Takeshi YabanaDepartment of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Toru NakazawaDepartment of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Hiroaki TomitaDepartment of Psychiatry, Tohoku University Hospital, Sendai, Japan.
Tohoku University · JPChiba University · JPMiyagi Prefectural Hospital Organization · JPTohoku University Hospital · JPUniversity of Belgrade · RSUniversity of Rochester Medical Center · US

Funding

MEXT | Japan Society for the Promotion of Science (JSPS) 22K07551
6 · The paper itself

Abstract

introductionAbnormal findings on optical coherence tomography (OCT) and electroretinography (ERG) have been reported in participants with schizophrenia spectrum disorders (SSDs). This study aims to reveal the pooled standard mean difference (SMD) in retinal parameters on OCT and ERG among participants with SSDs and healthy controls and their association with demographic characteristics, clinical symptoms, smoking, diabetes mellitus, and hypertension.

methodsUsing PubMed, Scopus, Web of Science, and PSYNDEX, we searched the literature from inception to March 31, 2023, using specific search terms. This study was registered with PROSPERO (CRD4202235795) and conducted according to PRISMA 2020.

resultsWe included 65 studies in the systematic review and 44 in the meta-analysis. Participants with SSDs showed thinning of the peripapillary retinal nerve fiber layer (pRNFL), macular ganglion cell layer- inner plexiform cell layer, and retinal thickness in all other segments of the macula. A meta-analysis of studies that excluded SSD participants with diabetes and hypertension showed no change in results, except for pRNFL inferior and nasal thickness. Furthermore, a significant difference was found in the pooled SMD of pRNFL temporal thickness between the left and right eyes. Meta-regression analysis revealed an association between retinal thinning and duration of illness, positive and negative symptoms. In OCT angiography, no differences were found in the foveal avascular zone and superficial layer foveal vessel density between SSD participants and controls. In flash ERG, the meta-analysis showed reduced amplitude of both a- and b-waves under photopic and scotopic conditions in SSD participants. Furthermore, the latency of photopic a-wave was significantly shorter in SSD participants in comparison with HCs. DISCUSSION: Considering the prior report of retinal thinning in unaffected first-degree relatives and the results of the meta-analysis, the findings suggest that retinal changes in SSDs have both trait and state aspects. Future longitudinal multimodal retinal imaging studies are needed to clarify the pathophysiological mechanisms of these changes and to clarify their utility in individual patient monitoring efforts.

Indexed as

ElectroretinographyRetinaSchizophreniaTomography, Optical CoherenceAdultBiomarkersFemaleHumansMaleNerve FibersBiomarkers

Identifiers

PMID38081943
PMCPMC11116118
OpenAlexW4389564436

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.