PMID- 23103637 OWN - NLM STAT- MEDLINE DCOM- 20130531 LR - 20121226 IS - 1873-3492 (Electronic) IS - 0009-8981 (Linking) VI - 415 DP - 2013 Jan 16 TI - Detection of autoantibodies against platelet glycoproteins in patients with immune thrombocytopenic purpura by flow cytometric immunobead array. PG - 176-80 LID - S0009-8981(12)00502-5 [pii] LID - 10.1016/j.cca.2012.10.035 [doi] AB - BACKGROUND: The goal of this study is to develop a flow cytometric immunobead array (FCIA) assay to detect platelet autoantibodies commonly present in bleeding patients with immune thrombocytopenic purpura (ITP). METHODS: Polystyrene microbeads coated with antibodies against human platelet glycoproteins (GPs) IX (SZ1), Ib (SZ2), IIIa (SZ21), IIb (SZ22), and P-selectin (SZ51) were incubated with platelet lysate from 50 ITP patients and 86 controls. The platelet antigen-autoantibody complexes were detected by flow cytometry using an FITC-labeled antibody. The results were compared with that of a monoclonal antibody immobilization of platelet antigen (MAIPA) assay. RESULTS: By FCIA, platelet autoantibodies against GPIb, GPIIb, GPIIIa, GPIX and P-selectin were detected in ITP patients. Mean fluorescent intensity values with antibodies SZ1, SZ2, SZ21, SZ22 and SZ51 were all higher in ITP patients than controls (p values<0.01). In ROC analysis, values of the area under the curve were 0.89, 0.82, 0.93, 0.94 and 0.95, respectively. In ITP diagnosis, the FCIA assay with these five antibodies had better sensitivity and accuracy than the MAIPA assay (96% vs. 44% in sensitivity; 80.9% vs. 64.7% in accuracy, p<0.01). CONCLUSION: FCIA assays with multiple antibodies against platelet GPs may be used to improve the diagnosis of ITP in hospitals. CI - Copyright (c) 2012 Elsevier B.V. All rights reserved. FAU - He, Yang AU - He Y AD - Key Lab of Thrombosis and Hemostasis, Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou, China. heyang1963@163.com FAU - Zhao, Yun-xiao AU - Zhao YX FAU - Zhu, Ming-qing AU - Zhu MQ FAU - Wu, Qingyu AU - Wu Q FAU - Ruan, Chang-geng AU - Ruan CG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121025 PL - Netherlands TA - Clin Chim Acta JT - Clinica chimica acta; international journal of clinical chemistry JID - 1302422 RN - 0 (Antigen-Antibody Complex) RN - 0 (Autoantibodies) RN - 0 (Autoantigens) RN - 0 (Fluorescent Dyes) RN - 0 (Platelet Membrane Glycoproteins) RN - 0 (Polystyrenes) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Antigen-Antibody Complex/*analysis MH - Autoantibodies/*analysis MH - Autoantigens/chemistry/*immunology MH - Blood Platelets/chemistry/*immunology MH - Case-Control Studies MH - Child MH - Child, Preschool MH - Female MH - Flow Cytometry/*methods MH - Fluorescent Dyes MH - Humans MH - Immunoassay MH - Male MH - Middle Aged MH - Platelet Membrane Glycoproteins/chemistry/*immunology MH - Polystyrenes MH - Purpura, Thrombocytopenic, Idiopathic/*diagnosis/immunology MH - ROC Curve EDAT- 2012/10/30 06:00 MHDA- 2013/06/01 06:00 CRDT- 2012/10/30 06:00 PHST- 2012/09/10 00:00 [received] PHST- 2012/10/08 00:00 [revised] PHST- 2012/10/18 00:00 [accepted] PHST- 2012/10/30 06:00 [entrez] PHST- 2012/10/30 06:00 [pubmed] PHST- 2013/06/01 06:00 [medline] AID - S0009-8981(12)00502-5 [pii] AID - 10.1016/j.cca.2012.10.035 [doi] PST - ppublish SO - Clin Chim Acta. 2013 Jan 16;415:176-80. doi: 10.1016/j.cca.2012.10.035. Epub 2012 Oct 25.