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BMC Medicine
Published in: BMC Medicine 1/2013

Open Access 01-12-2013 | Research article

Integrating multiple ‘omics’ analyses identifies serological protein biomarkers for preeclampsia

Authors: Linda Y Liu, Ting Yang, Jun Ji, Qiaojun Wen, Alexander A Morgan, Bo Jin, Gongxing Chen, Deirdre J Lyell, David K Stevenson, Xuefeng B Ling, Atul J Butte

Published in: BMC Medicine | Issue 1/2013

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Abstract

Background

Preeclampsia (PE) is a pregnancy-related vascular disorder which is the leading cause of maternal morbidity and mortality. We sought to identify novel serological protein markers to diagnose PE with a multi-’omics’ based discovery approach.

Methods

Seven previous placental expression studies were combined for a multiplex analysis, and in parallel, two-dimensional gel electrophoresis was performed to compare serum proteomes in PE and control subjects. The combined biomarker candidates were validated with available ELISA assays using gestational age-matched PE (n=32) and control (n=32) samples. With the validated biomarkers, a genetic algorithm was then used to construct and optimize biomarker panels in PE assessment.

Results

In addition to the previously identified biomarkers, the angiogenic and antiangiogenic factors (soluble fms-like tyrosine kinase (sFlt-1) and placental growth factor (PIGF)), we found 3 up-regulated and 6 down-regulated biomakers in PE sera. Two optimal biomarker panels were developed for early and late onset PE assessment, respectively.

Conclusions

Both early and late onset PE diagnostic panels, constructed with our PE biomarkers, were superior over sFlt-1/PIGF ratio in PE discrimination. The functional significance of these PE biomarkers and their associated pathways were analyzed which may provide new insights into the pathogenesis of PE.
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Metadata
Title
Integrating multiple ‘omics’ analyses identifies serological protein biomarkers for preeclampsia
Authors
Linda Y Liu
Ting Yang
Jun Ji
Qiaojun Wen
Alexander A Morgan
Bo Jin
Gongxing Chen
Deirdre J Lyell
David K Stevenson
Xuefeng B Ling
Atul J Butte
Publication date
01-12-2013
Publisher
BioMed Central
Published in
BMC Medicine / Issue 1/2013
Electronic ISSN: 1741-7015
DOI
https://doi.org/10.1186/1741-7015-11-236

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