Congenital Zika syndrome (CZS) is a cluster of malformation, and the mechanisms that lead it are still unclear. Using hypothesis-driven candidate genes and their function in viral infections, single-nucleotide polymorphisms (SNPs) were genotyped by quantitative polymerase chain reaction in a sample population from Sergipe State, Brazil. This study shows that rs3775291 SNP at Toll-like receptor 3, which triggers type I interferon antiviral responses in mothers infected by Zika virus during pregnancy, is associated with CZS occurrence (odds ratio [OR], 2.19; 95% confidence interval [CI], 1.158-4.148). Moreover, rs1799964 SNP at tumor necrosis factor-α gene in CZS babies is associated with severe microcephaly (OR, 2.63; 95% CI, 1.13-6.21).
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Article Synopsis
- In-utero exposure to Zika virus (ZIKV) can result in severe outcomes like miscarriage and congenital Zika syndrome, prompting a study on the infection rates among pregnant women from February to April 2022.
- Researchers tested 200 pregnant women for ZIKV antibodies and found that 16.5% had ZIKV IgM, 10% had IgG, and 23% had neutralizing antibodies, indicating various stages of infection and immunity.
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