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Placenta. 2014 May;35(5):337-40. doi: 10.1016/j.placenta.2014.02.008. Epub 2014 Mar 3.

Expression of voltage-dependent potassium channels in first trimester human placentae.

Author information

1
Division of Women's Health, King's College London, Women's Health Academic Centre, KHP, St Thomas' Hospital, Westminster Bridge Road, London SE1 7EH, UK; Department of Nephrology, Hypertension, Clinical Pharmacology and of Clinical Research, University of Bern, Berne CH-3010, Switzerland. Electronic address: hiten.mistry@kcl.ac.uk.
2
Department of Obstetrics & Gynaecology, School of Medicine, University of Nottingham, Nottingham NG5 1PB, UK.
3
Division of Biomedical Sciences, St George's University of London, London SW17 0RE, UK.
4
Division of Women's Health, King's College London, Women's Health Academic Centre, KHP, St Thomas' Hospital, Westminster Bridge Road, London SE1 7EH, UK.

Abstract

Potassium channel α-subunits encoded by KCNQ1-5 genes form voltage-dependent channels (KV7), modulated by KCNE1-5 encoded accessory proteins. The aim was to determine KCNQ and KCNE mRNA expression and assess protein expression/localisation of the KCNQ3 and KCNE5 isoforms in first trimester placental tissue. Placentae were obtained from women undergoing elective surgical termination of pregnancy (TOP) at ≤ 10 weeks' (early TOP) and >10 weeks' (mid TOP) gestations. KCNQ1-5 expression was unchanged during the first trimester. KCNE5 expression increased in mid TOP vs. early TOP samples (P = 0.022). This novel study reports mRNA and protein expression of KV7 channels in first trimester placentae.

KEYWORDS:

Early pregnancy; KCNE; KCNQ; Placenta; Potassium channel

PMID:
24646441
DOI:
10.1016/j.placenta.2014.02.008
[Indexed for MEDLINE]

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