Preterm labor biomarker discovery in serum using 3 proteomic profiling methodologies

Objective The aim of this study was to identify changes in protein expression in normal pregnancy compared with preterm labor by using 3 proteomic methods. Study Design Serum was collected from 25 nonpregnant (n = 5) and pregnant women at 24–40 weeks' gestation (n = 20) who had preterm labor re...

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Veröffentlicht in:American journal of obstetrics and gynecology 2009-10, Vol.201 (4), p.387.e1-387.e13
Hauptverfasser: Stella, Caroline L., MD, Bennett, Michael R., PhD, Devarajan, Prasad, MD, PhD, Greis, Kenneth, PhD, Wyder, Michael, MS, Macha, Stephen, PhD, Rao, Marepalli, PhD, Jodicke, Cristiano, MD, Moussa, Hind, MD, How, Helen Y., MD, Myatt, Leslie, PhD, Webster, Rose, PhD, Sibai, Baha M., MD
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container_end_page 387.e13
container_issue 4
container_start_page 387.e1
container_title American journal of obstetrics and gynecology
container_volume 201
creator Stella, Caroline L., MD
Bennett, Michael R., PhD
Devarajan, Prasad, MD, PhD
Greis, Kenneth, PhD
Wyder, Michael, MS
Macha, Stephen, PhD
Rao, Marepalli, PhD
Jodicke, Cristiano, MD
Moussa, Hind, MD
How, Helen Y., MD
Myatt, Leslie, PhD
Webster, Rose, PhD
Sibai, Baha M., MD
description Objective The aim of this study was to identify changes in protein expression in normal pregnancy compared with preterm labor by using 3 proteomic methods. Study Design Serum was collected from 25 nonpregnant (n = 5) and pregnant women at 24–40 weeks' gestation (n = 20) who had preterm labor resulting in preterm delivery (n = 5), preterm labor with term delivery (n = 5), term labor resulting in delivery (n = 5), or at term with contractions (n = 5). Undepleted serum was used for surface-enhanced laser desorption ionization and immune-depleted serum for matrix-assisted laser desorption ionization and 2-dimensional electrophoresis. Results Surface-enhanced laser desorption ionization identified significantly different peaks between preterm labor resulting in preterm delivery vs term labor resulting in delivery and preterm labor resulting in preterm delivery vs preterm labor with term delivery using 4 surfaces. In preterm labor resulting in preterm delivery vs preterm labor with term delivery, a peak of 7783.2 m/z was significantly up-regulated and at 3164 m/z down-regulated on 3 surfaces. By using 2-dimensional electrophoresis, protein 5364 was significantly different between preterm labor resulting in preterm delivery and term labor resulting in delivery. In preterm labor resulting in preterm delivery, 6 proteins showed decreasing trend and 1 showed increasing trend vs preterm labor with term delivery. Matrix-assisted laser desorption ionization showed a striking difference at 55,000 m/z between preterm labor resulting in preterm delivery and term labor resulting in delivery. Conclusion Surface-enhanced laser desorption ionization identified 2 proteins fulfilling the criteria of putative biomarkers. Biomarker identification may aid in identifying women with preterm labor who will deliver preterm.
doi_str_mv 10.1016/j.ajog.2009.06.034
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Study Design Serum was collected from 25 nonpregnant (n = 5) and pregnant women at 24–40 weeks' gestation (n = 20) who had preterm labor resulting in preterm delivery (n = 5), preterm labor with term delivery (n = 5), term labor resulting in delivery (n = 5), or at term with contractions (n = 5). Undepleted serum was used for surface-enhanced laser desorption ionization and immune-depleted serum for matrix-assisted laser desorption ionization and 2-dimensional electrophoresis. Results Surface-enhanced laser desorption ionization identified significantly different peaks between preterm labor resulting in preterm delivery vs term labor resulting in delivery and preterm labor resulting in preterm delivery vs preterm labor with term delivery using 4 surfaces. In preterm labor resulting in preterm delivery vs preterm labor with term delivery, a peak of 7783.2 m/z was significantly up-regulated and at 3164 m/z down-regulated on 3 surfaces. By using 2-dimensional electrophoresis, protein 5364 was significantly different between preterm labor resulting in preterm delivery and term labor resulting in delivery. In preterm labor resulting in preterm delivery, 6 proteins showed decreasing trend and 1 showed increasing trend vs preterm labor with term delivery. Matrix-assisted laser desorption ionization showed a striking difference at 55,000 m/z between preterm labor resulting in preterm delivery and term labor resulting in delivery. Conclusion Surface-enhanced laser desorption ionization identified 2 proteins fulfilling the criteria of putative biomarkers. 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Study Design Serum was collected from 25 nonpregnant (n = 5) and pregnant women at 24–40 weeks' gestation (n = 20) who had preterm labor resulting in preterm delivery (n = 5), preterm labor with term delivery (n = 5), term labor resulting in delivery (n = 5), or at term with contractions (n = 5). Undepleted serum was used for surface-enhanced laser desorption ionization and immune-depleted serum for matrix-assisted laser desorption ionization and 2-dimensional electrophoresis. Results Surface-enhanced laser desorption ionization identified significantly different peaks between preterm labor resulting in preterm delivery vs term labor resulting in delivery and preterm labor resulting in preterm delivery vs preterm labor with term delivery using 4 surfaces. In preterm labor resulting in preterm delivery vs preterm labor with term delivery, a peak of 7783.2 m/z was significantly up-regulated and at 3164 m/z down-regulated on 3 surfaces. By using 2-dimensional electrophoresis, protein 5364 was significantly different between preterm labor resulting in preterm delivery and term labor resulting in delivery. In preterm labor resulting in preterm delivery, 6 proteins showed decreasing trend and 1 showed increasing trend vs preterm labor with term delivery. Matrix-assisted laser desorption ionization showed a striking difference at 55,000 m/z between preterm labor resulting in preterm delivery and term labor resulting in delivery. Conclusion Surface-enhanced laser desorption ionization identified 2 proteins fulfilling the criteria of putative biomarkers. 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Study Design Serum was collected from 25 nonpregnant (n = 5) and pregnant women at 24–40 weeks' gestation (n = 20) who had preterm labor resulting in preterm delivery (n = 5), preterm labor with term delivery (n = 5), term labor resulting in delivery (n = 5), or at term with contractions (n = 5). Undepleted serum was used for surface-enhanced laser desorption ionization and immune-depleted serum for matrix-assisted laser desorption ionization and 2-dimensional electrophoresis. Results Surface-enhanced laser desorption ionization identified significantly different peaks between preterm labor resulting in preterm delivery vs term labor resulting in delivery and preterm labor resulting in preterm delivery vs preterm labor with term delivery using 4 surfaces. In preterm labor resulting in preterm delivery vs preterm labor with term delivery, a peak of 7783.2 m/z was significantly up-regulated and at 3164 m/z down-regulated on 3 surfaces. By using 2-dimensional electrophoresis, protein 5364 was significantly different between preterm labor resulting in preterm delivery and term labor resulting in delivery. In preterm labor resulting in preterm delivery, 6 proteins showed decreasing trend and 1 showed increasing trend vs preterm labor with term delivery. Matrix-assisted laser desorption ionization showed a striking difference at 55,000 m/z between preterm labor resulting in preterm delivery and term labor resulting in delivery. Conclusion Surface-enhanced laser desorption ionization identified 2 proteins fulfilling the criteria of putative biomarkers. Biomarker identification may aid in identifying women with preterm labor who will deliver preterm.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>19716121</pmid><doi>10.1016/j.ajog.2009.06.034</doi><tpages>3</tpages></addata></record>
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subjects 2-dimensional electrophoresis
Analysis of Variance
Biological and medical sciences
Biomarkers - blood
Diseases of mother, fetus and pregnancy
Electrophoresis, Gel, Two-Dimensional
Female
Gynecology. Andrology. Obstetrics
Humans
MALDI
mass spectrometry
Medical sciences
Obstetric Labor, Premature - diagnosis
Obstetrics and Gynecology
Pregnancy
Pregnancy. Fetus. Placenta
preterm labor
Protein Array Analysis
Proteomics
SELDI
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
title Preterm labor biomarker discovery in serum using 3 proteomic profiling methodologies
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