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  • Title: [Specific antibodies against Plasmodium falciparum antigens in immune subjects: II. Screening of responses against the merozoite major surface antigen (MSP!)].
    Author: Nguer CM, Diouf A, Diallo TO, Dieye A, Tall A, Diouf B, Molez JF, Trape JF, Perraut R, Garraud O.
    Journal: Dakar Med; 1997; 42(2):106-10. PubMed ID: 9827130.
    Abstract:
    Specific immune responses to asexual blood stages of P. falciparum antigens (a lysate of parasitized red blood cells and a characterized vaccine candidate i.e. MSP1 p19) were analyzed in plasma samples from immune adult individuals living in three different areas of Senegal, where malaria transmission is different. Most individuals in the three sites had specific IgG and IgM to total P. falciparum antigens, whereas approximately 50% had either IgG or IgM specific to MSP1 p19. Further, no anti-MSP1 p19 IgG2 and IgG4 antibody was noticed in any individual whereas the distribution of anti-MSP1 p19 IgG1 and IgG3 was different upon the epidemiological context. In addition, no relationship was found between antibody responses and in vitro T cell responses against P. falciparum antigens upon those experimental conditions. These data stress on the relatively elevated distribution of specific antibodies to MSP1 p19 in P. falciparum hyperendemic areas and suggest a differential regulation of isotypes depending on individual parasite exposure.
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