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Expression of GABA receptors subunits in peripheral blood mononuclear cells is gender dependent, altered in pregnancy and modified by mental health
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Physiology. (Bryndis Birnir)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Obstetrics and Gynaecology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Physiology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience.
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2015 (English)In: Acta Physiologica, ISSN 1748-1708, E-ISSN 1748-1716, Vol. 213, no 3, 575-585 p.Article in journal (Refereed) Published
Abstract [en]

AIM: The concept of nerve-driven immunity recognizes a link between the nervous and the immune system. γ-aminobutyric acid (GABA) is the main inhibitory neurotransmitter in the brain and receptors activated by GABA can be expressed by immune cells. Here we examined if the expression of GABA receptors and chloride transporters in human peripheral mononuclear cells (PBMCs) were influenced by gender, pregnancy or mental health.

METHODS: We used RT-qPCR to determine the mRNA expression level in men (n=16), non-pregnant women (n=19), healthy pregnant women (n=27) and depressed pregnant women (n=15).

RESULTS: The ρ2 subunit had the most prominent expression level of the GABA-A receptor subunits in all samples. The δ and ρ2 subunits were up-regulated by pregnancy whereas the ε subunit was more frequently expressed in healthy pregnant women than non-pregnant women who, in-turn, commonly expressed the α6 and the γ2 subunits. The β1 and ε subunits expression was altered by depression in pregnant women. The GABA-B1 receptor was up-regulated by depression in pregnant women while the transporters NKCC1 and KCC4 were down-regulated by pregnancy. The changes recorded in the mRNA expression levels imply participation of GABA receptors in establishing and maintaining tolerance in pregnancy. Importantly, the correlation of mental health with the expression of specific receptor subunits reveals a connection between the immune cells and the brain. Biomarkers for mental health may be identified in PBMCs.

CONCLUSION: The results demonstrate the impact gender, pregnancy and mental health have on expression of GABA receptors plus chloride transporters expressed in human PBMCs.

Place, publisher, year, edition, pages
2015. Vol. 213, no 3, 575-585 p.
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Physiology
Identifiers
URN: urn:nbn:se:uu:diva-240372DOI: 10.1111/apha.12440ISI: 000348531600007PubMedID: 25529063OAI: oai:DiVA.org:uu-240372DiVA: diva2:776386
Available from: 2015-01-07 Created: 2015-01-07 Last updated: 2017-12-05

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Bhandage, Amol K.Hellgren, CharlotteJin, ZheSundström-Poromaa, IngerBirnir, Bryndis

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