Acquisition of antibodies against endothelial protein C receptor-binding domains of Plasmodium falciparum erythrocyte membrane protein 1 in children with severe malaria
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
BACKGROUND: Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1) mediates parasite sequestration in postcapillary venules in P. falciparum malaria. PfEMP1 types can be classified based on their cysteine-rich interdomain region (CIDR) domains. Antibodies to different PfEMP1 types develop gradually after repeated infections as children age, and antibodies to specific CIDR types may confer protection.
METHODS: Levels of immunoglobulin G to 35 recombinant CIDR domains were measured by means of Luminex assay in acute-stage (baseline) and convalescent-stage plasma samples from Papua New Guinean children with severe or uncomplicated malaria and in healthy age-matched community controls.
RESULTS: At baseline, antibody levels were similar across the 3 groups. After infection, children with severe malaria had higher antibody levels than those with uncomplicated malaria against the endothelial protein C receptor (EPCR) binding CIDRα1 domains, and this difference was largely confined to older children. Antibodies to EPCR-binding domains increased from presentation to follow-up in severe malaria, but not in uncomplicated malaria.
CONCLUSIONS: The acquisition of antibodies against EPCR-binding CIDRα1 domains of PfEMP1 after a severe malaria episode suggest that EPCR-binding PfEMP1 may have a role in the pathogenesis of severe malaria in Papua New Guinea.
Originalsprog | Engelsk |
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Tidsskrift | The Journal of Infectious Diseases |
Vol/bind | 219 |
Udgave nummer | 5 |
Sider (fra-til) | 808-818 |
Antal sider | 11 |
ISSN | 0022-1899 |
DOI | |
Status | Udgivet - 2019 |
ID: 213826757