Profiling the Plasmodium falciparum Erythrocyte Membrane Protein 1-Specific Immununoglobulin G Response Among Ghanaian Children With Hemoglobin S and C

Andrew V Oleinikov, Zakaria Seidu, Irina V Oleinikov, Mary Tetteh, Helena Lamptey, Michael F Ofori, Lars Hviid, Mary Lopez-Perez*

*Corresponding author af dette arbejde

Abstract

Members of the Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1) family are important targets for protective immunity. Abnormal display of PfEMP1 on the surfaces of infected erythrocytes (IEs) and reduced cytoadhesion have been demonstrated in hemoglobin (Hb) AS and HbAC, inherited blood disorders associated with protection against severe P. falciparum malaria. We found that Ghanaian children with HbAS had lower levels of immunoglobulin G against several PfEMP1 variants and that this reactivity increased more slowly with age than in their HbAA counterparts. Moreover, children with HbAS have lower total parasite biomass than those with HbAA at comparable peripheral parasitemias, suggesting impaired cytoadhesion of HbAS IEs in vivo and likely explaining the slower acquisition of PfEMP1-specific immunoglobulin G in this group. In contrast, the function of acquired antibodies was comparable among Hb groups and appears to be intact and sufficient to control parasitemia via opsonization and phagocytosis of IEs.

OriginalsprogEngelsk
TidsskriftThe Journal of infectious diseases
Vol/bind229
Udgave nummer1
Sider (fra-til)203-213
Antal sider11
ISSN0022-1899
DOI
StatusUdgivet - 12 jan. 2024

Fingeraftryk

Dyk ned i forskningsemnerne om 'Profiling the Plasmodium falciparum Erythrocyte Membrane Protein 1-Specific Immununoglobulin G Response Among Ghanaian Children With Hemoglobin S and C'. Sammen danner de et unikt fingeraftryk.

Citationsformater