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Table of Contents
Vol. 64, No. 1, 2007
Issue release date: July 2007
Section title: Original Article
Gynecol Obstet Invest 2007;64:17–23
(DOI:10.1159/000098399)

Proteomic Analysis of Proteins Differentially Expressed in Preeclamptic Trophoblasts

Sun L.a · Yang N.a · De W.b · Xiao Y.a
aDepartment of Gynecology and Obstetrics, First Affiliated Hospital of Nanjing Medical University, and bBiochemistry and Molecular Biology, Nanjing Medical University, Nanjing, PR China

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Article / Publication Details

First-Page Preview
Abstract of Original Article

Received: April 25, 2006
Accepted: October 17, 2006
Published online: January 03, 2007
Issue release date: July 2007

Number of Print Pages: 7
Number of Figures: 3
Number of Tables: 2

ISSN: 0378-7346 (Print)
eISSN: 1423-002X (Online)

For additional information: http://www.karger.com/GOI

Abstract

Aims: To identify differential trophoblastic proteins associated with preeclampsia (PE) by proteomic analysis. Methods: We isolated and purified placental trophoblasts from normotensive pregnant women and patients with PE by a continuous Percoll gradient. The expression of proteins was determined by sliver staining after two-dimensional polyacrylamide gel electrophoresis (2D-PAGE). Proteins of interest were identified using matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF-MS). Results: The overall trophoblastic protein expression patterns in preeclamptic and corresponding normotensive placentas were quite similar except for some areas. Of 34 differentially expressed protein spots (p < 0.05 by paired t-test), seven differential proteins from nine spots were identified by MALDI-TOF-MS. The expression of the following proteins was repressed (p < 0.01): disulfide isomerase ER-60, peroxiredoxin 2, and Δ3,5-Δ2,4-dienoyl-CoA isomerase. Four proteins (protein disulfide isomerase precursor, endoplasmic reticulum resident protein, dihydrolipoyl dehydrogenase and TIM21-like protein) were found to be significantly upregulated in PE (p < 0.01). Conclusion: We identified several proteins with significant altered expression in PE using 2D-PAGE. This method is a powerful technique with which to search for not only quantitative but also qualitative changes in a biological process of interest.

© 2007 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Article

Received: April 25, 2006
Accepted: October 17, 2006
Published online: January 03, 2007
Issue release date: July 2007

Number of Print Pages: 7
Number of Figures: 3
Number of Tables: 2

ISSN: 0378-7346 (Print)
eISSN: 1423-002X (Online)

For additional information: http://www.karger.com/GOI


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