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Hum. Reprod. Advance Access published online on January 23, 2006
Human Reproduction, doi:10.1093/humrep/dei482
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© The Author 2006. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Received July 20, 2005
Revised November 16, 2005
Accepted December 8, 2005

Article

Effect of first-trimester serum from pregnant women with high-resistance uterine artery Doppler resistance on extravillous trophoblast invasion

R. Ganapathy 1, L.J. Ayling 2, G.S.J. Whitley 2, J.E. Cartwright 2, and B. Thilaganathan 3 *

1 Biochemistry and Immunology, Division of Basic Medical Sciences, St George’s University of London, London, UK; Fetal Medicine Unit, Division of Clinical Developmental Sciences, St George’s University of London, London, UK
2 Biochemistry and Immunology, Division of Basic Medical Sciences, St George’s University of London, London, UK
3 Fetal Medicine Unit, Division of Clinical Developmental Sciences, St George’s University of London, London, UK

* To whom correspondence should be addressed.
B. Thilaganathan, E-mail: basky{at}pobox.com


  Abstract

BACKGROUND: Abnormal uterine artery Doppler indices are associated with pregnancy complications such as pre-eclampsia and intrauterine growth restriction. Poor trophoblast invasion may be a consequence of, or be associated with, abnormal Doppler indices. OBJECTIVE: To evaluate in vitro trophoblast function following exposure to first-trimester serum from pregnancies with high uterine artery Doppler resistance indices. METHODS: Doppler ultrasound examination of the maternal uterine arteries was performed on women at 10-14 weeks’ gestation. Serum was collected from women with bilateral uterine artery notches with resistance indices above the 95th centile and from patients with normal uterine artery indices. The effect of serum on trophoblast invasion was determined using an established in vitro model from the extravillous trophoblast-derived cell line SGHPL-4. RESULTS: Trophoblastic invasion was significantly reduced when treated with serum from women with high-resistance compared with normal-resistance uterine artery Doppler indices (P < 0.05). CONCLUSION: Maternal serum in the first trimester of pregnancy from patients with high-resistance uterine artery Doppler indices appears to inhibit trophoblast invasion. This experimental model allows further investigation of factors responsible and the evaluation of therapeutic strategies.

Keywords: Doppler/pregnancy serum/trophoblast invasion/uterine artery resistance.
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L.K. Harris, O.H. Clancy, J.E. Myers, and P.N. Baker
Plasma From Women With Preeclampsia Inhibits Trophoblast Invasion
Reproductive Sciences, November 1, 2009; 16(11): 1082 - 1090.
[Abstract] [PDF]


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