Journal
ARCHIVES OF GYNECOLOGY AND OBSTETRICS
Volume 299, Issue 3, Pages 725-732Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00404-019-05061-8
Keywords
C-reactive protein; Histologic chorioamnionitis; Insulin-like growth factor-binding protein-2; Interleukin-6; Plasma; Preterm labor
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Funding
- Korea Health Technology R&D Project, Ministry of Health and Welfare, Republic of Korea [HI 14C1798]
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PurposeTo determine whether various selected immune-related proteins in maternal plasma, alone or in combination, can predict histologic chorioamnionitis (HCA) in women with preterm labor, and to compare the predictive abilities of these biomarkers with that of serum C-reactive protein (CRP).MethodsThis retrospective cohort study included 74 consecutive women with preterm labor (23-34 gestational weeks) who delivered within 96h of blood sampling. Their serum CRP levels were also measured. The stored maternal plasma was assayed for interleukin (IL)-6, matrix metalloproteinase (MMP)-9, tissue inhibitor of metalloproteinases (TIMP)-1, angiopoietin-2, S100 A8/A9, CXCL14, APRIL, and insulin-like growth factor-binding protein-2 (IGFBP-2), using ELISA kits. The primary outcome measure was HCA.ResultsHCA was detected in 59.4% (44/74) of women. Women with HCA had a significantly lower median gestational age at sampling and plasma IGFBP-2 level, and higher median plasma IL-6 and S100 A8/A9 levels than those without HCA. In multivariable analysis, high plasma IL-6 and low plasma IGFBP-2 levels were independently associated with the occurrence of HCA. However, the sensitivities, specificities, and areas under the curve of plasma IL-6, S100 A8/A9, and IGFBP-2, alone or in combination, were similar to or lower than those of serum CRP, for detecting HCA.ConclusionsOur data suggest that plasma IL-6, S100 A8/A9, and IGFBP-2 could be potential novel biomarkers for predicting HCA in women with PTL; however, elevated plasma levels of these biomarkers, alone or in combination, do not predict HCA better than serum CRP.
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