Abstract
Objective
To determine during mid-trimester amniocentesis if elevated concentrations of ADAM-8 (A Disintegrin And Metalloprotease 8) and/or cortisol can recognize women at risk for spontaneous preterm delivery.
Methods
The study involved 312 women who underwent mid-trimester amniocentesis. Thirteen patients, who progressed to preterm delivery, were matched with 21 controls for age, parity, gestational age at amniocentesis, and year of amniocentesis. ADAM-8 and cortisol levels were measured by enzyme-linked immunosorbent assay and radioimmunoassay, respectively.
Results
ADAM-8 mean amniotic fluid concentrations were significantly higher in women with preterm delivery than in women delivering at term (mean 1213.9 [SE 96.7] pg/mL [range, 780 to 1854 pg/mLJ vs mean 937.2 [SE 50.3] pg/mL [range, 486 to 1508 pg/mL], P <.02). Amniotic fluid ADAM-8 concentrations higher than 1149 pg/mL had the highest specificity and odds ratio (OR) in the identification of the women with increased risk for preterm delivery (sensitivity 61.5%; specificity 81.7%; OR, 9.6 [95% confidence interval (Cl), 1.8 to 50.3]). Women with preterm delivery had suggestively higher amnioticfiuid concentrations of cortisol (mean 1.3 [SE 0.2] μg/dL [range, 0.4 to 2.2 μg/dL]) than women delivering at term (mean 1.0 [SE 0.09] μLg/dL [range, 0.6 to 1.7 μg/dL], P <.07). Furthermore, cortisol levels were positively correlated with ADAM-8 levels (Spearman’s r =.418, P <.014).
Conclusions
Elevated mid-trimester amnioticfiuid ADAM-8 concentrations possibly are a riskfactor for preterm delivery, particularly if ADAM-8 levels are greater than 1149 pg/mL. Potential intrauterine inflammation is also associated with suggestively increased amniotic fluid cortisol levels.
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The authors would like to thank Dr E. Economou for scientific advice, Dr E. Kostantellou for technical assistance and Drs G. Alexandrakis, P. Malligiannis, and J. Tziotis for collecting part of the material
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Vrachnis, N., Malamitsi-Puchner, A., Samoli, E. et al. Elevated Mid-Trimester Amniotic Fluid ADAM-8 Concentrations as a Potential Risk Factor for Preterm Delivery. Reprod. Sci. 13, 186–190 (2006). https://doi.org/10.1016/j.jsgi.2006.01.003
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DOI: https://doi.org/10.1016/j.jsgi.2006.01.003