1921
Volume 102, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645
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Abstract

Abstract.

Invasion of human erythrocytes by merozoites of involves interaction between the Duffy binding protein alpha region II (PkDBPαII) and Duffy antigen receptor for chemokines (DARCs) on the erythrocytes. Information is scarce on the binding level of PkDBPαII to different Duffy antigens, Fy and Fy. This study aims to measure the binding level of two genetically distinct PkDBPαII haplotypes to Fy(a+b−) and Fy(a+b+) human erythrocytes using erythrocyte-binding assay. The binding level of PkDBPαII of Peninsular Malaysian and Malaysian Borneon haplotypes to erythrocytes was determined by counting the number of rosettes formed in the assay. Overall, the Peninsular Malaysian haplotype displayed higher binding activity than the Malaysian Borneon haplotype. Both haplotypes exhibit the same preference to Fy(a+b+) compared with Fy(a+b−), hence justifying the vital role of Fy in the binding to PkDBPαII. Further studies are needed to investigate the susceptibility on individuals with different Duffy blood groups.

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  • Received : 08 Nov 2019
  • Accepted : 06 Jan 2020
  • Published online : 16 Mar 2020
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