Evidence map›Paper›PMID 35236264›Full record

ArticleCurrent neuropharmacology2022

Prospective Investigation of Glutamate Levels and Percentage Gray Matter in the Medial Prefrontal Cortex in Females at Risk for Postpartum Depression.

Arjun Ghuman, Alyssa McEwen, Kim Hoang Tran, Nicholas Mitchell, Chris Hanstock, Peter Seres, Gian Jhangri, Denee Burgess, Glen Baker, Jean-Michel Le Melledo

Open access · greenAbstract read
In one paragraph

Article in Current neuropharmacology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 2 pooled it
2.8field-weighted citation impact, top 11% 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, 2 syntheses or guidelines pooled it, 17 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

10 authors at 1 institution in 1 country.

Arjun GhumanDepartment of Psychiatry, University of Alberta, Edmonton, Alberta, Canada.
Alyssa McEwenDepartment of Psychiatry, University of Alberta, Edmonton, Alberta, Canada.
Kim Hoang TranDepartment of Psychiatry, University of Alberta, Edmonton, Alberta, Canada.
Nicholas MitchellDepartment of Psychiatry, University of Alberta, Edmonton, Alberta, Canada.
Chris HanstockDepartment of Biomedical Engineering, University of Alberta, Edmonton, Alberta, Canada.
Peter SeresDepartment of Biomedical Engineering, University of Alberta, Edmonton, Alberta, Canada.
Gian JhangriDepartment of Public Health Sciences, University of Alberta, Edmonton, Alberta, Canada.
Denee BurgessDepartment of Psychiatry, University of Alberta, Edmonton, Alberta, Canada.
Glen BakerDepartment of Psychiatry, University of Alberta, Edmonton, Alberta, Canada.
Jean-Michel Le MelledoDepartment of Psychiatry, University of Alberta, Edmonton, Alberta, Canada.
University of Alberta · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe substantial female hormone fluctuations associated with pregnancy and postpartum have been linked to a greater risk of developing depressive symptoms, particularly in high-risk women (HRW), i.e. those with histories of mood sensitivity to female hormone fluctuations. We have shown that glutamate (Glu) levels in the medial prefrontal cortex (MPFC) decrease during perimenopause, a period of increased risk of developing a major depressive episode. Our team has also demonstrated that percentage gray matter (%GM), another neural correlate of maternal brain health, decreases in the MPFC during pregnancy.

objectiveTo investigate MPFC Glu levels and %GM from late pregnancy up to 7 weeks postpartum in HRW and healthy pregnant women (HPW).

methodsSingle-voxel spectra were acquired from the MPFC of 41 HPW and 22 HRW using 3- Tesla in vivo proton magnetic resonance spectroscopy at five different time points.

resultsWe observed a statistically significant interaction between time and group for the metabolite Glu, with Glu levels being lower for HRW during pregnancy and early postpartum (p<0.05). MPFC %GM was initially lower during pregnancy and then significantly increased over time in both groups (p<0.01).

conclusionThis investigation suggests that the vulnerability towards PPD is associated with unique fluctuations of MPFC Glu levels during pregnancy and early postpartum period. Our results also suggest that the decline in MPFC %GM associated with pregnancy seems to progressively recover over time. Further investigations are needed to determine the specific role that female hormones play on the physiological changes in %GM during pregnancy and postpartum.

Indexed as

Depression, PostpartumMajor Depressive DisorderFemaleGlutamic AcidGray MatterHormonesHumansPrefrontal CortexPregnancyProspective StudiesGlutamic AcidHormonesdepressionGlutamategray mattermagnetic resonance spectroscopypostpartumpregnancy

Identifiers

PMID35236264
PMCPMC9886796
OpenAlexW4214815004

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.