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Association of adhesion molecule PECAM-1/CD31 polymorphism with susceptibility to cerebral malaria in Thais

M Kikuchi1, S Looareesuwan, R Ubalee

  • 1Department of Medical Zoology, Saitama Medical School, Moroyrma, Iruma, 350-0495, Saitama, Japan.

Parasitology International
|November 24, 2001
PubMed

Insights

Certain genetic variations in the PECAM-1/CD31 gene are linked to an increased risk of cerebral malaria (CM). This finding may help identify individuals susceptible to severe malaria complications.

Area of Science:

  • Immunogenetics
  • Molecular Biology
  • Tropical Medicine

Background:

  • Endothelial adhesion molecules mediate Plasmodium falciparum red blood cell (PRBC) binding, potentially contributing to cerebral malaria (CM) pathogenesis.
  • PECAM-1/CD31, an adhesion molecule encoded by a polymorphic gene, is a candidate mediator in CM.

Purpose of the Study:

  • To investigate the association between CD31 gene polymorphisms and clinical malaria outcomes in Thai patients.
  • To identify specific CD31 genotypes as potential risk factors for cerebral malaria.

Main Methods:

  • Genotyping of the CD31 gene in 210 Thai malaria patients with varying disease severities (cerebral, severe, uncomplicated).
  • Analysis of four defined alleles: 125V-563N, 125V-563S, 125L-563N, and 125L-563S.

Main Results:

  • A significantly higher frequency of the 125V/V 563N/N genotype was observed in CM patients compared to severe malaria cases without CM (P<0.01, OR=2.92).

Conclusions:

  • The 125V/V 563N/N genotype of the CD31 gene is associated with an increased risk of developing cerebral malaria.
  • CD31 genetic polymorphism may play a role in the susceptibility to severe Plasmodium falciparum malaria complications.

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