RESUMO
OBJECTIVE: To identify single nucleotide polymorphisms (SNPs) associated with clinical chorioamnionitis among preterm infants. STUDY DESIGN: We reanalyzed a genome-wide association study (GWAS) from preterm newborns at less than 30 weeks' gestation. Cases and control definitions were determined using administrative records. There were 213 clinical chorioamnionitis cases and 707 clinically uninfected controls. We compared demographic and clinical outcomes of cases and controls. We performed a GWAS and compared the distribution of SNPs from the background genes and from the immunome genes. We used a Wilcoxon's rank-sum test to compare the SNPs normalized odds ratio and used odds ratios and p-values to determine candidate genes. RESULTS: Infants affected by clinical chorioamnionitis were more likely to have periventricular leukomalacia, high-grade retinopathy, and high-grade intraventricular hemorrhage (IVH). Although a GWAS did not identify SNPs associated with clinical chorioamnionitis at the genome-wide significance level, a direct test on the exonic variants in the human immunome revealed their significant increase of risk in clinical chorioamnionitis. CONCLUSION: Among very preterm infants, clinical chorioamnionitis was associated with periventricular leukomalacia, high-grade retinopathy, and IVH. Our analysis of variants in the human immunome indicates an association with clinical chorioamnionitis in very preterm pregnancies.
Assuntos
Corioamnionite/genética , Predisposição Genética para Doença , Recém-Nascido Prematuro , Polimorfismo de Nucleotídeo Único , Adulto , Estudos de Casos e Controles , Hemorragia Cerebral Intraventricular/genética , Hemorragia Cerebral Intraventricular/imunologia , Corioamnionite/imunologia , Feminino , Estudo de Associação Genômica Ampla , Humanos , Imunidade/genética , Recém-Nascido , Doenças do Prematuro , Leucomalácia Periventricular/genética , Leucomalácia Periventricular/imunologia , Masculino , Gravidez , Retinopatia da Prematuridade/genética , Retinopatia da Prematuridade/imunologiaRESUMO
OBJECTIVE: Investigate the association between maternal homelessness at the time of delivery and perinatal outcomes, with a focus on neonatal health outcomes. STUDY DESIGN: Population-based cohort using California's statewide database included 1,520,253 women with linked birth and maternal discharge data, 2008-2012. Multivariable analysis assessed homelessness at time of delivery on perinatal outcomes, preterm delivery, and neonatal intensive care unit admission. RESULT: A total of 672 women (0.05%) were homeless at the time of delivery. Homelessness was associated with premature delivery at multiple gestational age cutoffs (34w0d-36w6d; 32w0d-33w6d; 28w0d-31w6d; <28w0d) (range of aORs:1.62-2.19), and neonatal intensive care unit admission (aOR = 1.66, 95% CI:1.31-2.09). Among term infants, homelessness remained associated with increased odds of neonatal intensive care unit admission (aOR = 1.84, 95% CI:1.34-2.53), low birthweight (aOR = 1.99, 95% CI:1.36-2.90), neonatal abstinence syndrome (aOR = 2.13, 95% CI:1.35-2.53), hypoxic-ischemic encephalopathy (aOR = 14.38, 95% CI:3.90-53.01), and necrotizing enterocolitis (aOR = 14.94, 95% CI:2.68-83.20). CONCLUSION: Homelessness in pregnancy was associated with adverse perinatal outcomes including increased odds of preterm delivery across all gestational ages, and increased risk of neonatal intensive care unit admission and low birth weight independent of preterm delivery.