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© Research
Publication : Microbes and infection

Impact of red blood cell polymorphisms on the antibody response to Plasmodium falciparum in Senegal.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Microbes and infection - 01 Apr 2006

Sarr JB, Pelleau S, Toly C, Guitard J, Konaté L, Deloron P, Garcia A, Migot-Nabias F,

Link to Pubmed [PMID] – 16679042

Microbes Infect 2006 Apr; 8(5): 1260-8

The evidence of protection afforded by red blood cell polymorphisms against either clinical malaria or Plasmodium falciparum blood levels varies with the study site and the type of malaria transmission. Nevertheless, no clear implication of an antibody-related effect has yet been established in the protection related to red blood cell polymorphisms. We performed a prospective study, where plasma IgG and IgG subclasses directed to recombinant proteins from the merozoite surface protein 2 (MSP2/3D7 and MSP2/FC27) and the ring-infected erythrocyte surface antigen (RESA) were determined in a cohort of 413 Senegalese children before the annual malaria transmission season. The antibody response was dependent on age, and to a lesser extent, on the village of residence. IgG3 responders to all proteins, IgG responders to RESA and MSP2/3D7, as well as IgG2 to RESA and IgG1 responders to MSP2/3D7, presented enhanced mean values of parasite density, as evaluated during an 18-month follow-up. The levels of IgG and IgG3 to MSP2/3D7 were negatively associated with the risk of occurrence of a malaria attack during the following transmission season. Compared to normal children, sickle cell trait carriers presented lower levels of IgG to MSP2/3D7. Similarly, G6PD A- girls had lower levels of IgG and IgG3 to MSP2/FC27 than did G6PD normal girls. The impact of these particular genetic polymorphisms on the modulation of the antibody response is discussed.

https://pubmed.ncbi.nlm.nih.gov/16679042