title: A proteomic analysis of IVF follicular fluid in women <or=32 years old.
abstract: OBJECTIVE
  To address the lack of predictors of IVF success by using proteomic biometrics.
  
  
  METHODS
  Experimental study of follicular fluid specimens from a prospective cohort of IVF patients.
  
  
  METHODS
  Academic research laboratory and IVF program.
  
  
  METHODS
  Women <or=32 years old with <11 oocytes retrieved and no pregnancy were matched to women who had >or=11 oocytes and live birth (10 pairs). Year of cycle start and IVF down-regulation protocol were also matched.
  
  
  METHODS
  Follicular fluid was separated by two-dimensional polyacrylamide gel electrophoresis followed by Sypro Ruby staining and comparison with PDQuest software. Logistic regression was incorporated to calculate the likelihood of live birth in relation to the protein spot of interest.
  
  
  METHODS
  Protein markers.
  
  
  RESULTS
  Liquid chromatography-tandem mass spectrometry and searching of sequence databases revealed 11 potential protein candidates. Haptoglobin alpha, predominantly fetal expressed T1 domain, mitochondrial integrity genome (ATPase), apolipoprotein H (beta-2 glycoprotein I), dihydrolipoyl dehydrogenase, lyzozyme C, fibrinogen alpha-chain, and immunoglobulin heavy chain V-III (region BRO) were found to have increased expression in the live birth group, whereas antithrombin, vitamin D-binding protein, and complement 3 were decreased. An ELISA confirmed a significantly lower level of antithrombin.
  
  
  CONCLUSIONS
  Proteomic evaluation of follicular fluid is able to identify potential biomarkers of good versus poor responders in matched pairs of IVF patients.
authors.affiliation: Department of Obstetrics and Gynecology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115-5804, USA.
authors.forename: Stephanie J
authors.initials: SJ
authors.lastname: Estes
authors.forename: Bin
authors.initials: B
authors.lastname: Ye
authors.forename: Weiliang
authors.initials: W
authors.lastname: Qiu
authors.forename: Daniel
authors.initials: D
authors.lastname: Cramer
authors.forename: Mark D
authors.initials: MD
authors.lastname: Hornstein
authors.forename: Stacey A
authors.initials: SA
authors.lastname: Missmer
mesh_terms: D000328:Adult; D000991:Antithrombins / Q000032:analysis / Q000378:metabolism; D015415:Biomarkers / Q000032:analysis / Q000378:metabolism; D016022:Case-Control Studies; D003176:Complement C3 / Q000032:analysis / Q000378:metabolism; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods; D015571:Follicular Fluid / Q000737:chemistry* / Q000378:metabolism; D006801:Humans; D007246:Infertility / Q000175:diagnosis / Q000378:metabolism / Q000628:therapy; D050498:Live Birth; D008297:Male; D011247:Pregnancy; D011379:Prognosis; D020543:Proteome / Q000032:analysis* / Q000378:metabolism; D040901:Proteomics; D017211:Treatment Failure; D054928:Validation Studies as Topic; D014809:Vitamin D-Binding Protein / Q000032:analysis / Q000378:metabolism
chemical_list: D000991:Antithrombins; D015415:Biomarkers; D003176:Complement C3; D020543:Proteome; D014809:Vitamin D-Binding Protein