title: Proteomic analysis of human serum for finding pathogenic factors and potential biomarkers in preeclampsia.
abstract: OBJECTIVE
  To apply a novel proteomic method to discover potential pathogenic factors and biomarkers of preeclampsia.
  
  
  METHODS
  Sera from five patients complicated with preeclampsia and five healthy pregnant controls were separately pooled. Each pool was treated with peptide ligand library beads (PLLBs) to remove high abundance proteins by affinity and thus enrich low abundance proteins. The proteins from the eluate were analyzed by a combination of 1D Gel-LC-MS/MS. Protein expression levels were quantified using spectral counts and the extracted ion current.
  
  
  RESULTS
  1172 unique proteins in preeclampsia and 1149 in healthy controls were identified in the present study. 51 proteins were differentially expressed between preeclampsia and healthy pregnant women including chorionic somatommammptropin hormone (CSH) and fibulin-1. 31 proteins identified were up-regulated and 20 were down-regulated.
  
  
  CONCLUSIONS
  The results demonstrate that peptide ligand library combining with 1D gel-LC-MS/MS analysis is an efficient method to identify differentially expressed proteins in sera and two biological processes of complement and coagulation activations and lipid metabolism were involved in the pathogenesis of preeclampsia.
authors.affiliation: Beijing Chaoyang Hospital affiliated Capital Medical University, Beijing, China.
authors.forename: C
authors.initials: C
authors.lastname: Liu
authors.forename: N
authors.initials: N
authors.lastname: Zhang
authors.forename: H
authors.initials: H
authors.lastname: Yu
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: Y
authors.initials: Y
authors.lastname: Liang
authors.forename: H
authors.initials: H
authors.lastname: Deng
authors.forename: Z
authors.initials: Z
authors.lastname: Zhang
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000097:blood*; D002135:Calcium-Binding Proteins / Q000032:analysis; D002853:Chromatography, Liquid; D005260:Female; D006801:Humans; D019151:Peptide Library; D010928:Placental Lactogen / Q000032:analysis; D011225:Pre-Eclampsia / Q000097:blood*; D011247:Pregnancy; D040901:Proteomics / Q000379:methods*; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D053719:Tandem Mass Spectrometry
chemical_list: D015415:Biomarkers; D002135:Calcium-Binding Proteins; D019151:Peptide Library; C060820:fibulin; D010928:Placental Lactogen