title: Genome-based expression profiling as a single standardized microarray platform for the diagnosis of endometrial disorder: an array of 126-gene model.
abstract: OBJECTIVE
  To assess the molecular signatures underlying endometrial disorder using cDNA microarray.
  
  
  METHODS
  Gene expression-based oligonucleotide array of the normal endometrium.
  
  
  METHODS
  University hospital.
  
  
  METHODS
  Humans.
  
  
  METHODS
  Endometrial tissues were obtained from 28 normal cycling women undergoing endometrial biopsy. RNA was extracted from each tissue and all labeled samples were hybridized to Affymetrix Human U133 plus 2.0 array.
  
  
  METHODS
  Transcriptional response.
  
  
  RESULTS
  Hierarchical cluster analysis with the Mahalanobis distance revealed a "126-gene" model, which are up-regulated at mid-secretory phase, moderately expressed at late-secretary phase, and down-regulated at late-secretory phase. Furthermore, the mechanisms underlying the receptivity of human endometrium at mid-secretary phase can be summarized: first, complex metabolic reactions are involved. Second, the activation of complement and coagulation cascades promotes muscle contraction, chemotaxis, phagocyte recruitment, and peritoneal inflammation. Third, Ephrin A-mediated axon guidance promotes retrograde menstruation. Fourth, autophagic degradation is suggested to be responsible for the new blood vessel formation. In addition, DKK1 is up-regulated, indicating that WNT signaling pathway may contribute to the development of endometrial disorders.
  
  
  CONCLUSIONS
  The success of this innovation has supported the use of microarray-based genome expression profiling as a single standardized platform for diagnosis of endometrial disorders.
authors.affiliation: Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital and University of Chang Gung School of Medicine, Taiwan, Republic of China.
authors.forename: Ling-Hong
authors.initials: LH
authors.lastname: Tseng
authors.forename: Ilen
authors.initials: I
authors.lastname: Chen
authors.forename: Ming-Yang
authors.initials: MY
authors.lastname: Chen
authors.forename: Hong
authors.initials: H
authors.lastname: Yan
authors.forename: Chao-Nin
authors.initials: CN
authors.lastname: Wang
authors.forename: Chyi-Long
authors.initials: CL
authors.lastname: Lee