Genetic polymorphisms with erythrocyte traits in malaria endemic areas of Mali

PLoS One. 2019 Jan 4;14(1):e0209966. doi: 10.1371/journal.pone.0209966. eCollection 2019.

Abstract

African populations are characterized by high degree of genetic diversity. This high genetic diversity could result from the natural selection pressure. Several studies have described an association between some genetic diversities and difference of susceptibility to infectious diseases like malaria. It seems therefore important to consider genetic diversity impact when interpreting results of clinical trials in malaria endemic areas. This study aimed to determine the genetic polymorphism with erythrocyte traits in different populations of malaria endemic area in Mali. The cross-sectional surveys were carried out in different ethnic groups living in malaria endemic areas in Mali. Six milliliters of whole blood were collected in EDTA vials from each participant after informed consent has been obtained. The ABO, RH, Kell, MNSs, Kidd and Duffy systems phenotypes were assessed by the technique of gel filtration. A total of 231 subjects were included from six villages. The blood groups phenotypes O (40.7%) and A (31.2%) were more frequent with respective allele frequencies of 0.65 and 0.21. In the RH system the haplotypes R0 (0.55), r (0.20) and R1 (0.13) were the most frequent. Seven percent (7%) of Duffy positive and 4% of Glycophorin B deficiency (S-s-) were observed among participants. All participants were Kell negative. ABO and RH systems were polymorphic in these ethnic groups in Mali. Their implication in susceptibility to malaria should be taken into account in clinical trials interpretation, and for prevention of blood transfusion risks during anemia frequently caused by malaria in children.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • ABO Blood-Group System / genetics
  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Alleles
  • Child
  • Child, Preschool
  • Cross-Sectional Studies
  • Erythrocytes / metabolism*
  • Female
  • Gene Frequency / genetics
  • Genetic Predisposition to Disease / genetics*
  • Haplotypes / genetics
  • Humans
  • Malaria / genetics*
  • Male
  • Mali / epidemiology
  • Middle Aged
  • Phenotype
  • Polymorphism, Genetic / genetics
  • Young Adult

Substances

  • ABO Blood-Group System

Grants and funding

This work was supported by Etablissement Français du Sang EFS-Marseille and Malaria Research and Training Center (UMI 3189). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.