Evidence map›Paper›PMID 36146906›Full record

ArticleThe international journal of neuropsychopharmacology2023

Decreased GABA+ Levels in the Medial Prefrontal Cortex of Perimenopausal Women: A 3T 1H-MRS Study.

Kim H Tran, Jessica Luki, Sarah Hanstock, Christopher C Hanstock, Peter Seres, Katherine Aitchison, Tami Shandro, Jean-Michel Le Melledo

Open access · goldAbstract read
In one paragraph

Article in The international journal of neuropsychopharmacology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.8field-weighted citation impact, top 13% 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

9 citing papers in PubMed, 15 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

8 authors at 2 institutions in 1 country.

Kim H TranUniversity of Alberta, Department of Psychiatry, Edmonton, AB, Canada.ORCID 0000-0002-3665-7296
Jessica LukiUniversity of Alberta, Department of Psychiatry, Edmonton, AB, Canada.
Sarah HanstockUniversity of Alberta, Department of Psychiatry, Edmonton, AB, Canada.
Christopher C HanstockUniversity of Alberta, Department of Psychiatry, Edmonton, AB, Canada.
Peter SeresUniversity of Alberta, Department of Biomedical Engineering, Edmonton, AB, Canada.
Katherine AitchisonUniversity of Alberta, Department of Psychiatry, Edmonton, AB, Canada.
Tami ShandroLois Hole Hospital for Women, Royal Alexandra Hospital, Edmonton, AB, Canada.
Jean-Michel Le MelledoUniversity of Alberta, Department of Psychiatry, Edmonton, AB, Canada.
University of Alberta · CARoyal Alexandra Hospital · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivePerimenopause is associated with an increased risk of developing a major depressive (MD) episode. A significant number of women develop their first MD episode during perimenopause, suggesting a unique pathophysiology of perimenopausal (PM) depression. Previous research has shown that depression is associated with decreased gamma-aminobutyric acid (GABA) levels in the medial prefrontal cortex (MPFC) of MD patients. The objective of this study was to compare MPFC GABA+ levels in healthy reproductive-aged (RD) and PM women.

methodsA total of 18 healthy PM and 20 RD women were included in the study. MPFC GABA+ levels, which include homocarnosine and macromolecules, were measured via magnetic resonance spectroscopy using a 3 Tesla magnet. MPFC GABA+ levels were referenced to creatine + phosphocreatine (Cr+PCr). Absence of current or past psychiatric diagnosis was confirmed via a structured interview. RD participants were scanned during the early follicular phase of the menstrual cycle. PM women were scanned outside of ovulatory cycles.

resultsMean MPFC GABA+ concentrations (relative to Cr+PCr) were decreased in the PM group compared with the RD group (PM mean = 0.08 ± 0.02, RD mean = 0.09 ± 0.02, t = -2.03, df = 36, P = .05) even after correcting for in percentage in gray matter (GM). Because PM women were inherently older than RD women (aged 48.8 ± 3.55 and 31.5 ± 9.66 years, respectively), the age difference between the 2 groups was statistically significant (P < .001). When age was treated as an independent covariate and included in the model, the difference in GABA+ between PM and RD women was no longer significant (P = .092).

conclusionPerimenopause is associated with decreased MPFC GABA+/Cr+PCr levels, which may contribute to the increased risk of experiencing a MD episode during PM.

Indexed as

Major Depressive DisorderPerimenopauseAdultCreatineFemalegamma-Aminobutyric AcidHumansMagnetic Resonance SpectroscopyPrefrontal CortexCreatinegamma-Aminobutyric AciddepressionGABA+magnetic resonance spectroscopymedial prefrontal cortexPerimenopause

Identifiers

PMID36146906
PMCPMC9850658
OpenAlexW4296793884

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.