title: Spectroscopic diagnosis of anti-phospholipid antibodies by visible and near-infrared spectroscopy in SLE patients' plasma samples.
abstract: The purpose of this study was to investigate whether visible and near-infrared (Vis-NIR) spectroscopy can be used for diagnoses of anti-phospholipid syndrome (APS). Vis-NIR spectra from 90 plasma samples [anti-phospholipid antibodies (aPLs)-positive group, n=48; aPLs-negative group, n=42] were subjected to principal component analysis (PCA) and soft independent modeling of class analogy (SIMCA) to develop multivariate models to discriminate between aPLs-positive and aPLs-negative. Both PCA and SIMCA models were further assessed by the prediction of 84 masked other determinations. The PCA model predicted successful discrimination of the masked samples with respect to aPLs-positive and aPLs-negative. The SIMCA model predicted 42 of 48 (87.5%) aPLs-positive patients and 33 of 36 (91.7%) aPLs-negative patients of Vis-NIR spectra from masked samples correctly. These results suggest that Vis-NIR spectroscopy combined with multivariate analysis could provide a promising tool to objectively diagnose APS.
authors: Laboratory for Clinical Investigation, Osaka University Hospital, 2-15 Yamadaoka, Suita, Osaka 565-0871, Japan.
authors: Junzo
authors: J
authors: Nojima
authors: Akikazu
authors: A
authors: Sakudo
authors: Yukiko
authors: Y
authors: Hakariya
authors: Hirohiko
authors: H
authors: Kuratsune
authors: Yasuyoshi
authors: Y
authors: Watanabe
authors: Yuzuru
authors: Y
authors: Kanakura
authors: Kazuyoshi
authors: K
authors: Ikuta
mesh_terms: D000293:Adolescent; D000328:Adult; D017152:Antibodies, Antiphospholipid / Q000097:blood*; D016736:Antiphospholipid Syndrome / Q000097:blood / Q000175:diagnosis; D002138:Calibration; D002648:Child; D005260:Female; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000097:blood* / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D019265:Spectroscopy, Near-Infrared / Q000379:methods*
chemical_list: D017152:Antibodies, Antiphospholipid