title: Study of phosphatidylserine-dependent anti-prothrombin antibody in cerebral infarction.
abstract: OBJECTIVE
  This study was carried out to clarify the relationship of IgG phosphatidylserine-dependent anti-prothrombin antibody (aPS/PT), IgG beta 2 glycoprotein I-dependent anticardiolipin antibody (beta 2-GPI aCL), and lupus anticoagulant (LA) to cerebral infarction, using data from 93 patients who visited our hospitals.
  
  
  METHODS
  We computed the positive rates for each of IgG aPS/PT, beta 2-GPI aCL, and LA in the 93 patients with cerebral infarction, and carried out logistic regression analysis with IgG aPS/PT as the outcome variable and with beta 2-GPI aCL, LA, and each risk factor as predictor variables in order to assess the relationship of IgG aPS/PT with each factor.
  
  
  RESULTS
  IgG aPS/PT was more highly correlated with LA than beta 2-GPI aCL in IgG aPS/PT-positive patients with cerebral infarction. IgG aPS/PT itself appears to have high specificity as a marker for antiphospholipid syndrome (APS), because there were patients who were IgG aPS/PT-positive but both beta 2-GPI aCL- and LA-negative.
  
  
  CONCLUSIONS
  In IgG aPS/PT-positive patients with cerebral infarction, IgG aPS/PT is more highly correlated with LA than beta 2-GPI aCL. It is also strongly associated with APS. Measurement of IgG aPS/PT in patients with cerebral infarction could be of diagnostic value.
authors.affiliation: Department of Neurology, Tokai University Tokyo Hospital. ookuma@tok.u-tokai.ac.jp
authors.forename: Hirohisa
authors.initials: H
authors.lastname: Okuma
authors.forename: Yasuhisa
authors.initials: Y
authors.lastname: Kitagawa
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Ishikawa
authors.forename: Shigeharu
authors.initials: S
authors.lastname: Takagi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017152:Antibodies, Antiphospholipid / Q000097:blood*; D015415:Biomarkers / Q000097:blood; D002544:Cerebral Infarction / Q000175:diagnosis / Q000276:immunology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010718:Phosphatidylserines / Q000502:physiology*; D011516:Prothrombin / Q000276:immunology*
chemical_list: D017152:Antibodies, Antiphospholipid; D015415:Biomarkers; D010718:Phosphatidylserines; D011516:Prothrombin