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IL4 gene polymorphism and previous malaria experiences manipulate anti-Plasmodium falciparum antibody isotype profiles in complicated and uncomplicated malaria.
- Tangteerawatana, Piyatida (author)
-
- Perlmann, Hedvig (author)
- Stockholms universitet,Avdelningen för immunologi
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- Hayano, Masashi (author)
- Stockholms universitet,Avdelningen för immunologi
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- Kalambaheti, Thareerat (author)
- Khusmith, Srisin (author)
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- (creator_code:org_t)
- 2009-12-10
- 2009
- English.
- In: Malaria Journal. - : Springer Science and Business Media LLC. - 1475-2875. ; 8:1, s. 286-
- Journal article (peer-reviewed)
Abstract
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- ABSTRACT: BACKGROUND: The IL4-590 gene polymorphism has been shown to be associated with elevated levels of anti-Plasmodium falciparum IgG antibodies and parasite intensity in the malaria protected Fulani of West Africa. This study aimed to investigate the possible impact of IL4-590C/T polymorphism on anti-P. falciparum IgG subclasses and IgE antibodies levels and the alteration of malaria severity in complicated and uncomplicated malaria patients with or without previous malaria experiences. METHODS: Anti-P.falciparum IgG subclasses and IgE antibodies in plasma of complicated and uncomplicated malaria patients with or without previous malaria experiences were analysed using ELISA. IL4-590 polymorphisms were genotyped using RFLP-PCR. Statistical analyses of the IgG subclasses and IgE levels were done by Oneway ANOVA. Genotype differences were tested by Chi-squared test. RESULTS: The IL4-590T allele was significantly associated with anti-P. falciparum IgG3 antibody levels in patients with complicated (P=0.031), but not with uncomplicated malaria (P=0.622). Complicated malaria patients with previous malaria experiences carrying IL4-590TT genotype had significantly lower levels of anti-P. falciparum IgG3 (P=0.0156), while uncomplicated malaria patients with previous malaria experiences carrying the same genotype had significantly higher levels (P=0.0206) compared to their IL4-590 counterparts. The different anti-P. falciparum IgG1 and IgG3 levels among IL4-590 genotypes were observed. Complicated malaria patients with previous malaria experiences tended to have lower IgG3 levels in individuals carrying TT when compared to CT genotypes (P=0.075). In contrast, complicated malaria patients without previous malaria experiences carrying CC genotype had significantly higher anti-P. falciparum IgG1 than those carrying either CT or TT genotypes (P=0.004, P=0.002, respectively). CONCLUSIONS: The results suggest that IL4-590C or T alleles participated differently in the regulation of anti-malarial antibody isotype profiles in primary and secondary malaria infection and, therefore, could play an important role in alteration of malaria severity.
Subject headings
- NATURVETENSKAP -- Biologi -- Immunologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Immunology (hsv//eng)
Keyword
- Immunology
- Immunologi
- immunologi
- Immunology
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- ref (subject category)
- art (subject category)
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