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Title: Association of PECAM1/CD31 polymorphisms with cerebral malaria
Authors: Jun Ohashi
Izumi Naka
Hathairad Hananantachai
Jintana Patarapotikul
University of Tokyo
University of Tsukuba
Mahidol University
Keywords: Biochemistry, Genetics and Molecular Biology
Issue Date: 1-Jan-2016
Citation: International Journal of Molecular Epidemiology and Genetics. Vol.7, No.2 (2016), 87-94
Abstract: © E-Century Publishing Corporation. All rights reserved. Platelet/endothelial cell adhesion molecule-1 (PECAM1/CD31), a receptor recognized by P. falciparum-infected red blood cells (iRBCs), on the vascular endothelium has been implicated in mediating cytoadherence in patients with P. falciparum malaria. To examine associations of PECAM1 polymorphisms with cerebral malaria, 11 tag single nucleotide polymorphisms (SNPs) of PECAM1 were analysed for 312 Thai patients with P. falciparum malaria (109 with cerebral malaria and 203 with mild malaria). The rs1122800-C allele was significantly associated with protection from cerebral malaria (P = 0.017), and the rs9912957-A significantly increased the risk for cerebral malaria (P = 0.0065) in malaria patients. Fine-scale mapping using genotyped and imputed SNPs and linkage disequilibrium (LD) analysis revealed that rs1122800 and rs9912957 were located in two distinct LD blocks and were independently associated with cerebral malaria. The rs1122800-C allele was significantly associated with lower expression level of PECAM1 in EBV-transformed lymphoblastoid cell lines (P = 0.045). The present results suggest that PECAM1-mediated cytoadherence of iRBCs to brain endothelium plays a crucial role in the pathogenesis of cerebral malaria.
ISSN: 19481756
Appears in Collections:Scopus 2016-2017

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