Discrimination Against Immigrant Latina Mothers Associated With Pro-Inflammatory Gene Expression in Their Preschool-Aged Children.
Rebeca Alvarado-Harris, Krista M Perreira, Hudson P Santos
PMID 41424353WHAT IT FOUND
Preschool children whose mothers reported frequent discrimination had higher expression of pro-inflammatory genes.
This association persisted after adjusting for maternal depression and child body mass index, suggesting a biological link between maternal stress and child immune activity.
Key findings
01Higher maternal reports of everyday discrimination were associated with higher child IL-8 and IL-1β mRNA expression.
02The association between maternal discrimination and child inflammatory gene expression remained significant after adjusting for maternal depressive symptoms and child body mass index.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The cross-sectional design prevents establishing causality; it is unclear if maternal discrimination directly causes changes in child gene expression or if other unmeasured factors are involved. The sample size was modest (N = 70), which reduced power to detect smaller effects. Self-reported measures of maternal depression may have been underreported due to social desirability bias and stigma. The study focused exclusively on Latina mothers; findings may not generalize to other immigrant groups or to fathers. Maternal gene expression data were available for only a subset of dyads, limiting the exploration of shared genetic or biological pathways.
Declared interests
The authors declared no potential conflicts of interest. Funding was provided by the National Institute of Nursing Research (NIH), the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NIH), University of Miami Professorship start-up funds, and various fellowships and research awards.
The easy way to misread this
Do not interpret the association between maternal discrimination and child pro-inflammatory gene expression as evidence that discrimination causes disease or that interventions targeting discrimination will lower these biomarkers. This is a cross-sectional study of gene expression, not clinical health outcomes, and it does not prove causation.