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Common variants of fetal and maternal complement genes in preeclampsia: pregnancy specific complotype
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Common variants of fetal and maternal complement genes in preeclampsia: pregnancy specific complotype
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Common variants of fetal and maternal complement genes in preeclampsia: pregnancy specific complotype
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Journal Article
Common variants of fetal and maternal complement genes in preeclampsia: pregnancy specific complotype
2020
Overview
Preeclampsia (PE) is a pregnancy specific hypertensive disorder. If untreated PE leads to life threatening condition, eclampsia. Systemic complement activation levels are increased during pregnancy compared to non-pregnant women of childbearing age. In PE, systemic complement levels are further increased, and higher complement deposition has been observed on placentas. We hypothesize that combinations of common SNPs in maternal and fetal complement genes constitute pregnancy specific complotypes and predispose women to PE. In this study, we sequenced two maternal (factor H and C3) and one fetal (CD46) complement genes and identified a total of 9 common SNPs. Minor allele frequencies of two fetal CD46 SNPs were significantly higher in PE. Further, complotypes consisting of fetal CD46 variants and maternal CFH/C3 variants were highly prevalent in PE patients compared to normotensive pregnancies. Placental complement deposition and maternal alternative pathway 50 (AP50) values were higher in PE pregnancies. Irrespective of disease status, two CD46 variants were associated with reduced placental CD46 expression and one CFH variant was associated with increased maternal AP50 values.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
/ Adult
/ Complement Activation - genetics
/ Complement Pathway, Alternative - genetics
/ Complement System Proteins - genetics
/ Complement System Proteins - metabolism
/ Female
/ Fetuses
/ Gene Expression Regulation, Developmental - genetics
/ Humanities and Social Sciences
/ Humans
/ Membrane Cofactor Protein - genetics
/ Membrane Cofactor Protein - metabolism
/ Placenta
/ Polymorphism, Single Nucleotide
/ Science
