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Cytophilic antibodies to Plasmodium falciparum glutamate rich protein are associated with malaria protection in an area of holoendemic transmission.

Authors :
Lusingu JP
Vestergaard LS
Alifrangis M
Mmbando BP
Theisen M
Kitua AY
Lemnge MM
Theander TG
Source :
Malaria journal [Malar J] 2005 Sep 29; Vol. 4, pp. 48. Date of Electronic Publication: 2005 Sep 29.
Publication Year :
2005

Abstract

Background: Several studies conducted in areas of medium or low malaria transmission intensity have found associations between malaria immunity and plasma antibody levels to glutamate rich protein (GLURP). This study was conducted to analyse if a similar relationship could be documented in an area of intense malaria transmission.<br />Methods: A six month longitudinal study was conducted in an area of holoendemic malaria transmission in north-eastern Tanzania, where the incidence of febrile malaria decreased sharply by the age of three years, and anaemia constituted a significant part of the malaria disease burden. Plasma antibodies to glutamate rich protein (GLURP) were analysed and related with protection against malaria morbidity in models correcting for the effect of age.<br />Results: The risk of febrile malaria episodes was reduced significantly in children with measurable anti-GLURP IgG1 antibodies at enrollment [adjusted odds ratio: 0.39 (95% CI: 0.15, 0.99); P = 0.047]. Interestingly, there was an inverse relationship between the plasma anti-GLURP IgG1 and IgG3 levels and the levels of parasitaemia at enrollment. However, anti-GLURP IgG2 and IgG4 levels were not associated with reduction in parasite density. Similarly, antibody levels were not associated with haemoglobin levels or anaemia risk.<br />Conclusion: Cytophilic IgG1 and IgG3 antibodies against R0-GLURP may contribute to the control of parasite multiplication and reduction in febrile malaria incidence in children living in an area of intense malaria transmission.

Details

Language :
English
ISSN :
1475-2875
Volume :
4
Database :
MEDLINE
Journal :
Malaria journal
Publication Type :
Academic Journal
Accession number :
16194274
Full Text :
https://doi.org/10.1186/1475-2875-4-48