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Related Experiment Video

Updated: May 5, 2026

Isolation of Leukocytes from the Human Maternal-fetal Interface
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Maternal inflammatory markers and term labor performance.

Jill T Cierny1, E Ramsey Unal2, Pamela Flood3

  • 1Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, SC.

American Journal of Obstetrics and Gynecology
|December 4, 2013
PubMed
Summary
This summary is machine-generated.

Maternal inflammation markers impact labor. Low interleukin-6 (IL-6) slowed early labor, while high interleukin-1 (IL-1) and tumor necrosis factor-alpha (TNF-α) hindered active labor progress.

Keywords:
cytokinesfailure to progressinflammationinterleukinslabor

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Area of Science:

  • Reproductive biology
  • Immunology
  • Obstetrics

Background:

  • Maternal inflammation plays a role in labor initiation.
  • The precise impact of specific inflammatory markers on labor progression remains unclear.

Purpose of the Study:

  • To investigate the association between maternal serum inflammatory cytokine levels and labor performance in nulliparous women.

Main Methods:

  • A nested cohort study of 334 term nulliparous patients.
  • Maternal blood collected at labor onset to measure interleukin (IL)-1, IL-6, and tumor necrosis factor-alpha (TNF-α).
  • Mixed effects modeling analyzed cytokine quartiles against labor progress (dilation, effacement, station).

Main Results:

  • Lower levels of IL-6 were linked to slower latent labor.
  • Higher levels of IL-1 and TNF-α were associated with slower active labor progression.
  • Cytokine levels showed significant correlations with labor duration metrics.

Conclusions:

  • While inflammation is crucial for labor initiation, excessive levels can impede active labor.
  • These findings may help explain links between chorioamnionitis, cesarean delivery, and postpartum hemorrhage.