Evidence map›Paper›PMID 29631202›Full record

ArticleJournal of affective disorders2018

Neurochemical differences between bipolar disorder type I and II in superior temporal cortices: A proton magnetic resonance spectroscopy study.

Murat İlhan Atagün, Elif Muazzez Şıkoğlu, Serdar Süleyman Can, Görkem Karakaş Uğurlu, Semra Ulusoy Kaymak, Ali Çayköylü, Oktay Algın, Mary L Phillips, Constance M Moore, Dost Öngür

Abstract read
In one paragraph

Article in Journal of affective disorders, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 3 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

17 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  6. Pharmaco-Multiomics: A New Frontier in Precision Psychiatry.International journal of molecular sciences · 2025
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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

10 authors.

Murat İlhan AtagünDepartment of Psychiatry, Ankara Yıldırım Beyazıt University Medical School, Ankara, Turkey; Department of Psychiatry, Ankara Atatürk Training and Education Hospital, Ankara, Turkey. Electronic address: miatagun@ybu.edu.tr.
Elif Muazzez ŞıkoğluCenter for Comparative NeuroImaging, Department of Psychiatry and Radiology, University of Massachusetts Medical School, Worcester, MA, USA.
Serdar Süleyman CanDepartment of Psychiatry, Ankara Yıldırım Beyazıt University Medical School, Ankara, Turkey; Department of Psychiatry, Ankara Atatürk Training and Education Hospital, Ankara, Turkey.
Görkem Karakaş UğurluDepartment of Psychiatry, Ankara Yıldırım Beyazıt University Medical School, Ankara, Turkey; Department of Psychiatry, Ankara Atatürk Training and Education Hospital, Ankara, Turkey.
Semra Ulusoy KaymakDepartment of Psychiatry, Ankara Atatürk Training and Education Hospital, Ankara, Turkey.
Ali ÇayköylüDepartment of Psychiatry, Ankara Yıldırım Beyazıt University Medical School, Ankara, Turkey; Department of Psychiatry, Ankara Atatürk Training and Education Hospital, Ankara, Turkey.
Oktay AlgınDepartment of Radiology, Ankara Atatürk Training and Education Hospital, Ankara, Turkey; National MR Research Center and Aysel Sabuncu Brain Research Center, Bilkent University, Ankara, Turkey.
Mary L PhillipsDepartment of Psychiatry, University of Pittsburgh, Medical School, Pittsburgh, PA, USA.
Constance M MooreCenter for Comparative NeuroImaging, Department of Psychiatry and Radiology, University of Massachusetts Medical School, Worcester, MA, USA.
Dost ÖngürPsychotic Disorders Division, McLean Hospital (Belmont), MA, USA; Department of Psychiatry, Harvard Medical School, Boston, MA, USA.

Funding

Glutamine and Glutamate in Children and Adolescents with Bipolar DisorderR01MH073998 · NIMH · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI MOORE, CONSTANCE M · 2008 to 2012
$1.5M
Research and Mentoring on Brain and Peripheral Bioenergetics in SchizophreniaK24MH104449 · NIMH · MCLEAN HOSPITAL · PI ONGUR, DOST · 2015 to 2019
$749k
NIMH NIH HHS K24 MH104449NIMH NIH HHS R01 MH073998
6 · The paper itself

Abstract

backgroundDespite the diagnostic challenges in categorizing bipolar disorder subtypes, bipolar I and II disorders (BD-I and BD-II respectively) are valid indices for researchers. Subtle neurobiological differences may underlie clinical differences between mood disorder subtypes. The aims of this study were to investigate neurochemical differences between bipolar disorder subtypes.

methodsEuthymic BD-II patients (n = 21) are compared with BD-I (n = 28) and healthy comparison subjects (HCs, n = 30). Magnetic Resonance Imaging (MRI) and proton spectroscopy (

resultsThere were significant differences between groups in terms of glutamate [F = 6.27, p = 0.003], glutamate + glutamine [F = 6.08, p = 0.004], inositol containing compounds (Ino) (F = 9.25, p < 0.001), NAA [F = 7.63, p = 0.001] and creatine + phosphocreatine [F = 11.06, p < 0.001] in the left hemisphere and Ino [F = 5.65, p = 0.005] in the right hemisphere. Post-hoc comparisons showed that the BD-I disorder group had significantly lower metabolite levels in comparison to the BD-II and the HC groups. LIMITATIONS: This was a cross-sectional study with a small sample size. In addition, patients were on various psychotropic medications, which may have impacted the results.

conclusionsNeurochemical levels, in the superior temporal cortices, measured with

Indexed as

AdultBipolar DisorderCreatineCross-Sectional StudiesCyclothymic DisorderFemaleGlutamic AcidHumansMagnetic Resonance ImagingMalePhosphocreatineProton Magnetic Resonance SpectroscopyTemporal LobeYoung AdultCreatineGlutamic AcidPhosphocreatineBipolar disorderMagnetic resonance spectroscopySuperior temporal gyrus

Identifiers

PMID29631202
PMCPMC5951770

What OpenQuestion holds

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LicenceTDM
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.