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Poor Sleep Quality and Associated Inflammation Predict Preterm Birth: Heightened Risk among African Americans

Lisa M Blair1, Kyle Porter2, Binnaz Leblebicioglu3

  • 1College of Nursing, The Ohio State University, Columbus, OH.

Sleep
|April 8, 2015
PubMed

Insights

Poor sleep increases inflammation, a key factor in preterm birth. African American women experience higher inflammation and preterm birth risk, linked to sleep quality and interleukin-8 (IL-8).

Area of Science:

  • Reproductive health
  • Immunology
  • Sleep science

Background:

  • Poor sleep is a known contributor to inflammation.
  • Inflammation plays a causal role in both term and preterm birth.
  • A significant racial disparity in preterm birth exists in the U.S., with African Americans at higher risk.

Purpose of the Study:

  • To examine the associations between sleep quality, serum proinflammatory cytokines, and gestational length.
  • To investigate potential racial differences in these associations among pregnant women.

Main Methods:

  • An observational study involving 138 pregnant women (79 African American, 53 European American).
  • Sleep quality assessed using the Pittsburgh Sleep Quality Index (PSQI) during midpregnancy.
  • Serum levels of IL-6, IL-8, IL-1β, and TNF-α measured; birth outcomes reviewed.

Main Results:

  • Among African American women, poorer sleep quality correlated with shorter gestation and increased odds of preterm birth (10.2 times higher).
  • No significant association between sleep quality and gestational length was found in European American women.
  • Interleukin-8 (IL-8) was identified as a significant mediator in African American women, linking sleep quality to gestational length.

Conclusions:

  • African American women show heightened inflammatory responses to sleep disturbances compared to European American women.
  • These sleep-induced immune dysregulation differences may contribute to racial disparities in preterm birth.
  • Targeting sleep quality in African American women could be a strategy to reduce preterm birth rates.
Abstract

Keywords:
African AmericanPSQIgestationinflammationpregnancypretermproinflammatory cytokinesracesleep

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