© 1994 Oxford University Press
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Antibodies to the 4-mer Repeat of the Ring-Infected Erythrocyte Surface Antigen (Pf155/RESA) Protect against Plasmodium falciparum Malaria


*INSERM Unité 13 and Institut de Médecine et d'Epidémiologie Africaines (IMEA) 190 Boulevard MacDonald, 75019 Paris, France
Unité de recherche sur le paludisme, Institut Pasteur de Madagascar BP 1274, Antananarivo, Madagascar
Astagneau P (INSERM Unite 13 and Institut de Medecine et d'Epidemiologie Africaines (IMEA), 190 Boulevard MacDonald, 75019 Paris, France), Chougnet C, Lepers J P, Andriamangatiana-Rason M D and Deloron P. Antibodies to the 4-mer repeat of the ring-infected erythrocyte surface antigen (Pf155/RESA) protect against Plasmodium falciparum malaria. International Journal of Epidemiology 1994; 23: 169175.
To investigate the protective role of antibodies to the ring-infected erythrocyte surface antigen (Pf155/RESA) epitopes against Plasmodium falciparum clinical malaria, a cohort study was conducted in a Malagasy village over 7 months. In the 304 individuals included, 127 experienced P. falciparum attacks of under 1500 parasites/µl with no clinical symptoms (protected individuals) and 177 experienced at least one clinical or preclinical P. falciparum attack requiring therapy (unprotected individuals). Antibodies to whole Pf155/RESA, to single epitopes of the 3' terminus, (EENV) and EENVEHDA(EENV)2 had higher responses in protected than in unprotected individuals (P=0.006, P=0.005, P=0.05 respectively). Within the whole pattem of antibodies to the Pf155/RESA epitopes. only anti-R4 was related to protection independently of age and anti-wR. The Pf155/RESA 4-mer repeated epitope might be of interest for inclusion in a vaccine against the asexual blood stages of P. falciparum.
Received 1 July 1993
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