Interleukin-1β-31C/T and -511T/C polymorphisms were associated with preeclampsia in chinese Han population

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Abstract

OBJECTIVE: The purpose of our study is to investigate the relationship between IL-1β -31C/T (rs1143627) and -511T/C (rs16944) polymorphisms and the preeclampsia (PE), and analyze the Linkage disequilibrium (LD) and haplotype frequency of the two polymorphism loci.<br /><br />METHODS: Polymorphisms at -31C/T and -511T/C of IL-1β were genotyped with the method of polymerase chain reaction-restriction fragment length polymorphism (PCR- RFLP) in 232 PE and 447 control subjects. Genotype and allele frequencies between case-control groups were compared by chi-square(X2) tests. Two-point LD and haplotype frequency analyses were done with the software Haploview4.2.<br /><br />RESULTS: Significant statistical differences were found between PE and control groups regarding genotype and allele frequencies of the two polymorphisms of IL-1β (For IL-1β -31C/T: X2 = 11.478, P = 0.003; For IL-1β-511T/C: X2 = 9.687, P = 0.008). LD analysis revealed that the IL-1β -31C/T SNP was in high LD with the IL-1β-511C/T SNP(D' = 0.92, r2 = 0.79). Both CT and TC haplotypes showed significant differences between case and control groups. Only the plasma level of Prothrombin Time had a significantly statistical difference among TT, CT and CC groups of the preeclamptic two polymorphisms of IL-1β-31C/T and -511T/C (for IL-1β-31C/T, F = 1.644, P = 0.01; F = 1.587, P = 0.016).<br /><br />CONCLUSION: Our results revealed IL-1β was associated with the PE in Chinese Han population. The CT haplotype may increase the risk of PE, while haplotype TC could be considered as a protective haplotype of PE.

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Wang, X., Jiang, F., Liang, Y., Xu, L., Li, H., Liu, Y., … Ye, Y. (2014). Interleukin-1β-31C/T and -511T/C polymorphisms were associated with preeclampsia in chinese Han population. PLoS ONE, 9(9). https://doi.org/10.1371/journal.pone.0106919

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