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Acute intrauterine infection results in an imbalance between pro- and anti-inflammatory cytokines in the pregnant rabbit.
Journal article

Acute intrauterine infection results in an imbalance between pro- and anti-inflammatory cytokines in the pregnant rabbit.

Kimberly K. Leslie, Scott L. Lee, Susan M. Woodcock, Jill K. Davies, Joan L. Eskens, Ronald S. Gibbs, Emmet Hirsch, Michael P. Sherman and Robert S. McDuffie Jr.
American journal of reproductive immunology (New York, N.Y. : 1989), Vol.43(5), pp.305-311
05/01/2000
DOI: 10.1111/j.8755-8920.2000.430510.x
PMID: 10872611

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Abstract

<p>PROBLEM: Intrauterine infection results in an increase in cytokines. This study compared the time courses for the pro- and anti-inflammatory cytokine responses in 33 pregnant rabbits at 70% gestation. Pro-inflammatory markers were activated nuclear factor-kappa B (NF-kappaB) in placenta and tumor necrosis factor-alpha (TNF-alpha) in amniotic fluid. These were compared to the anti-inflammatory cytokine, interleukin-1 receptor antagonist (IL-1ra), in placenta and uterus.</p> <p>METHOD OF STUDY: Does were endoscopically inoculated with Escherichia coli through their cervices and sacrificed at six intervals between 0 and 30 hr post-inoculation.</p> <p>RESULTS: Activated NF-kappaB, determined by electromobility gel shift assay, increased significantly 16 hr after bacterial inoculation (P < or = 0.05). This was directly mirrored by TNF-alpha concentrations, determined by bioassay, in the amniotic fluid. However, IL-1ra levels, determined by enzyme-linked immunosorbent assay, did not increase in response to infection.</p> <p>CONCLUSIONS: Intrauterine infection results in an imbalance between pro- and anti-inflammatory cytokines that may potentiate infection-induced preterm delivery.</p>
Cytokines Placenta Pregnancy Obstetrics and Gynecology Amniotic Fluid Animals Escherichia coli Infections Female Interleukin 1 Receptor Antagonist Protein NF-kappa B Pregnancy Complications Infectious Rabbits Sialoglycoproteins Tumor Necrosis Factor-alpha Uterine Diseases Uterus

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