Am J Perinatol 2016; 33(08): 791-799
DOI: 10.1055/s-0036-1572428
Original Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Altered Platelet Function in Intrauterine Growth Restriction: A Cause or a Consequence of Uteroplacental Disease?

Sieglinde M. Müllers
1   Department of Obstetrics and Gynecology, Royal College of Surgeons in Ireland, Rotunda Hospital, Dublin, Ireland
,
Naomi Burke
1   Department of Obstetrics and Gynecology, Royal College of Surgeons in Ireland, Rotunda Hospital, Dublin, Ireland
,
Karen Flood
1   Department of Obstetrics and Gynecology, Royal College of Surgeons in Ireland, Rotunda Hospital, Dublin, Ireland
,
Jonathan Cowman
2   Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland
,
Hugh O'connor
1   Department of Obstetrics and Gynecology, Royal College of Surgeons in Ireland, Rotunda Hospital, Dublin, Ireland
,
Brian Cotter
2   Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland
,
Morgan Kearney
3   Center for Women's Health Research, University of North Caroline, Chapel Hill, North Carolina
,
Mark Dempsey
1   Department of Obstetrics and Gynecology, Royal College of Surgeons in Ireland, Rotunda Hospital, Dublin, Ireland
,
Patrick Dicker
4   Department of Epidemiology and Public Health, Royal College of Surgeons in Ireland, Dublin, Ireland
,
Elizabeth Tully
1   Department of Obstetrics and Gynecology, Royal College of Surgeons in Ireland, Rotunda Hospital, Dublin, Ireland
,
Michael P. Geary
5   Department of Obstetrics and Gynecology, St. Michael's Hospital, Toronto, Canada
,
Dermot Kenny
2   Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland
,
Fergal D. Malone
1   Department of Obstetrics and Gynecology, Royal College of Surgeons in Ireland, Rotunda Hospital, Dublin, Ireland
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Publikationsverlauf

11. Dezember 2015

16. Dezember 2015

Publikationsdatum:
23. Februar 2016 (online)

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Abstract

Objective A limited number of platelet function studies in intrauterine growth restriction (IUGR) have yielded conflicting results. We sought to evaluate platelet reactivity in IUGR using a novel platelet aggregation assay.

Study Design Pregnancies with IUGR were recruited from 24 weeks' gestation (estimated fetal weight < 10th centile) and had platelet function testing performed after diagnosis. A modification of light transmission aggregometry created dose–response curves of platelet reactivity in response to multiple agonists at differing concentrations. Findings were compared with healthy third trimester controls. IUGR cases with a subsequent normal birth weight were analyzed separately.

Results In this study, 33 pregnancies retained their IUGR diagnosis at birth, demonstrating significantly reduced platelet reactivity in response to all agonists (arachidonic acid, adenosine diphosphate, collagen, thrombin receptor–activating peptide, and epinephrine) when compared with 36 healthy pregnancy controls (p < 0.0001). Similar results were obtained for cases demonstrating an increasing in utero growth trajectory. When IUGR preceded preeclampsia or gestational hypertension, platelet function was significantly reduced compared with normotensive IUGR.

Conclusion Using this comprehensive platelet assay, we have demonstrated a functional impairment of platelets in IUGR. This may reflect platelet-derived placental growth factor release. Further evaluation of platelet function may aid in the development of future platelet-targeted therapies for uteroplacental disease.