title: Retinal neovascular markers in retinopathy of prematurity: aetiological implications.
abstract: OBJECTIVE
  (1) To determine if expression of the blood-tissue barrier associated glucose transporter GLUT1 is preserved by the neovasculature of retinopathy of prematurity (ROP), in contrast with the reported loss of GLUT1 expression in preretinal vessels of proliferative diabetic retinopathy. (2) To compare the vascular immunophenotype of ROP to juvenile haemangioma, another perinatal neovascular disorder that has recently been shown to express placental type vascular antigens, including GLUT1 and Lewis Y antigen.
  
  
  METHODS
  A retrospective case report was carried out. Immunoreactivities for GLUT1 and Lewis Y antigen were assessed in a human eye with stage 3 ROP and compared with those in a control (paediatric) eye. The presence or absence of endothelial GLUT1 and Lewis Y immunoreactivity was determined in preretinal and intraretinal vessels.
  
  
  RESULTS
  Immunoreactivity was positive for GLUT1 and negative for Lewis Y in the intraretinal and preretinal neovasculature of the ROP affected eye and in the normal retinal vessels of the control eye.
  
  
  CONCLUSIONS
  Retention of immunoreactivity for GLUT1 distinguishes ROP from proliferative diabetic retinopathy. Furthermore, absence of Lewis Y antigen co-expression distinguishes ROP from juvenile haemangioma, a perinatal form of GLUT1 positive neovascularisation that has recently been linked to placental vasculature.
authors.affiliation: Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR, USA. northpaulae@uams.edu
authors.forename: P E
authors.initials: PE
authors.lastname: North
authors.forename: D C
authors.initials: DC
authors.lastname: Anthony
authors.forename: T L
authors.initials: TL
authors.lastname: Young
authors.forename: M
authors.initials: M
authors.lastname: Waner
authors.forename: H H
authors.initials: HH
authors.lastname: Brown
authors.forename: M C
authors.initials: MC
authors.lastname: Brodsky
mesh_terms: D015415:Biomarkers / Q000032:analysis; D001813:Blood-Retinal Barrier / Q000502:physiology; D003930:Diabetic Retinopathy / Q000378:metabolism; D003937:Diagnosis, Differential; D017809:Fatal Outcome; D005260:Female; D051272:Glucose Transporter Type 1; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009004:Monosaccharide Transport Proteins / Q000032:analysis*; D010641:Phenotype; D015861:Retinal Neovascularization / Q000378:metabolism* / Q000473:pathology; D012171:Retinal Vessels / Q000737:chemistry*; D012178:Retinopathy of Prematurity / Q000378:metabolism* / Q000473:pathology; D012189:Retrospective Studies
chemical_list: D015415:Biomarkers; D051272:Glucose Transporter Type 1; D009004:Monosaccharide Transport Proteins; C495677:SLC2A1 protein, human