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Abstract
BACKGROUND. An intricate fetal-maternal immune crosstalk during pregnancy is essential for a healthy birth. Hence, the infection-induced alterations of maternal immunity often lead to adverse outcomes for mother and/or child. The emergence of Zika virus (ZIKV) infection in pregnant women has been associated with more than 3,000 cases of microcephaly and nervous system malformations. METHODS. To explore the potential correlation of ZIKV-induced alteration of maternal immunity with fetal abnormalities, we performed extensive sera immunoprofiling of 74 pregnant women: 30 symptomatic ZIKV+ pregnant patients and 30 healthy pregnant controls in ZIKV-endemic Rio de Janeiro, along with 14 healthy pregnant controls in non-endemic Los Angeles. RESULTS. Extensive multiplexing analysis of 69 cytokines revealed that CXCL10, CCL2, and CCL8 chemokines were specifically associated with symptomatic ZIKV+ infection during pregnancy, and distinct immunoprofiles were detected at different trimesters in ZIKV-infected pregnant women. Intriguingly, the high CCL2 level and its inverse correlation with CD163, TNFRSF1A, and CCL22 levels was apparently associated with ZIKV-induced abnormal birth. CONCLUSION. Our findings provide insights into the alteration of ZIKV-elicited maternal immunity, serving as a potential clinical biomarker platform. FUNDING. NIH (CA200422, CA180779, DE023926, AI073099, AI116585, AI129496, AI140705, AI069120, AI056154, AI078389, AI28697, AI40718 and AI129534-01), Hastings Foundation, Fletcher Jones Foundation, Departamento de Ciência e Tecnologia (DECIT/25000.072811/2016-17) do Ministério da Saúde do Brasil, and Coordenação de Aperfeiçoamento de Pessoal de Nivel Superior CAPES/88887.116627/2016-01.
Authors
Suan-Sin Foo, Weiqiang Chen, Yen Chan, Wai-Suet Lee, Shin-Ae Lee, Genhong Cheng, Karin Nielsen-Saines, Patrícia Brasil, Jae U. Jung
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