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Published in: European Journal of Clinical Microbiology & Infectious Diseases 10/2015

01-10-2015 | Article

Polymorphisms in host genes encoding NOSII, C-reactive protein, and adhesion molecules thrombospondin and E-selectin are risk factors for Plasmodium falciparum malaria in India

Authors: K. Kanchan, S. S. Pati, S. Mohanty, S. K. Mishra, S. K. Sharma, S. Awasthi, V. Venkatesh, S. Habib, Indian Genome Variation Consortium

Published in: European Journal of Clinical Microbiology & Infectious Diseases | Issue 10/2015

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Abstract

Cytoadherence of Plasmodium falciparum-infected red blood cells (RBCs) in host microvasculature and complex regulation of the immune response are important contributors to the clinical outcome of disease. We tested the association of 23 single nucleotide polymorphisms (SNPs) and a microsatellite repeat in adhesion molecule genes THBS1 and ESEL, and immune regulatory molecule genes NOSII, CRP, and MBL2 with falciparum malaria in populations residing in a malaria-endemic and a non-endemic region of India. The THBS1 haplotype CCCCA (rs1478604, rs7170682, rs2664141, rs12912082, rs3743125) was a risk factor in the endemic region (relative risk = 3.78) and an ESEL SNP (rs5368, His468Tyr) associated with cerebral malaria (CM) [CM vs. non-cerebral malaria (NCM), odds ratio (OR) = 2.23, p = 0.03]. In the non-endemic region, an ESEL 3′UTR SNP (rs5359) associated with enhanced risk of disease (OR = 3.62, p = 1 × 10−4) and the CT genotype of the CRP promoter SNP (C/T/A) strongly associated with protection (severe vs. control, OR = 0.29, p = 6 × 10−5). Long repeat alleles of the NOSII promoter microsatellite (CCTTT)n exhibited strong association with protection and the NOSII ATG haplotype (rs3729508, rs2297520, rs9282801) was strongly protective against severe malaria in both regions (endemic, severe vs. control, OR = 0.05, p = 0.0001; non-endemic, severe vs. control, OR = 0.3, p = 1 × 10−5). Our results suggest differential contribution of variants of the investigated genes in determining the outcome of malaria in Indian populations.
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Metadata
Title
Polymorphisms in host genes encoding NOSII, C-reactive protein, and adhesion molecules thrombospondin and E-selectin are risk factors for Plasmodium falciparum malaria in India
Authors
K. Kanchan
S. S. Pati
S. Mohanty
S. K. Mishra
S. K. Sharma
S. Awasthi
V. Venkatesh
S. Habib
Indian Genome Variation Consortium
Publication date
01-10-2015
Publisher
Springer Berlin Heidelberg
Published in
European Journal of Clinical Microbiology & Infectious Diseases / Issue 10/2015
Print ISSN: 0934-9723
Electronic ISSN: 1435-4373
DOI
https://doi.org/10.1007/s10096-015-2448-0

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