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Associations of multi-locus polymorphisms in an immune network with susceptibility to uncomplicated Plasmodium falciparum malaria in Daraweesh village, Eastern Sudan
Stockholm University, Faculty of Science, The Wenner-Gren Institute , Immunology.
Stockholm University, Faculty of Science, The Wenner-Gren Institute , Immunology.
Stockholm University, Faculty of Science, The Wenner-Gren Institute , Immunology.
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2011 (English)In: Infection, Genetics and Evolution, ISSN 1567-1348, E-ISSN 1567-7257, Vol. 11, no 7, 1674-1681 p.Article in journal (Refereed) Published
Abstract [en]

Susceptibility to uncomplicated malaria (UM), as to other forms of the disease, is genetically determined. Over 9-years of clinical and parasitological follow up of inhabitants of Daraweesh, in Eastern Sudan, the relative susceptibility to UM was estimated in terms of number of episodes experienced by each individual. Previously, we reported that the levels of IgG2 and IgG3 to Pf332-C231 malaria antigen are negatively correlated with number of malaria episodes. In addition, four molecular markers for malaria susceptibility (CRP -286, GM/KM haplotypes, FcγRIIa131 and HbAS) were tested. In this study, the above data were combined and reanalysed. The CRP -286A allele and GM 1,17 5,13,14,6 phenotype were previously found to be associated with increased susceptibility to malaria; however, individuals have both polymorphism together were not more susceptible to UM than the non-carriers of the same double polymorphism. The FcγRIIa-RR131 and HbAA genotypes taken individually or as double polymorphism were not associated with malaria susceptibility; however, their combination with any or both of the former polymorphisms was mostly associated with increased susceptibility to malaria. None of the four markers were associated with the levels of IgG2 and IgG3 against Pf332-C231. In conclusion, while our data support the polygenic nature of susceptibility to UM and highlighted the role of immune markers polymorphisms, the combinations of these markers were not predictable, i.e. the combination of the susceptibility markers will not necessarily render the carriers more susceptible to UM.

Place, publisher, year, edition, pages
2011. Vol. 11, no 7, 1674-1681 p.
Keyword [en]
susceptibility, CRP, FcgRIIa, GM/KM allotypes, HbAS
National Category
Immunology
Identifiers
URN: urn:nbn:se:su:diva-65628DOI: 10.1016/j.meegid.2011.06.015ISI: 000297126800020PubMedID: 21729768OAI: oai:DiVA.org:su-65628DiVA: diva2:464292
Available from: 2011-12-13 Created: 2011-12-13 Last updated: 2017-12-08Bibliographically approved

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