Abstract
Objective. In current, neonatal practice, clinical signs of intrauterine infection (IUI) are often non-specific. From a large panel of immune biomarkers, we seek to identify cord blood markers that are most strongly associated with the fetal inflammatory response (FIR), a specific placental lesion associated with serious neonatal complications. Methods. We used multiplex immunoassay to measure 27 biomarkers, selected as part of an NIH-funded study of preterm birth, according to gestational age (GA) and extent of placental inflammation: involvement of chorion, amnion, decidua (maternal inflammatory response, MIR); extension to umbilical cord or chorionic plate (FIR). We used false-discovery rate (FDR < 5, P < 0.001) to account for multiple comparisons. Results. Among 506 births GA 2342 weeks, IL-1β increased with FIR among preterm subgroups P 0.0001 for <32 weeks; P 0.0009 for 3336 weeks. IL-6 and IL-8 increased with FIR among preterm and full-term infants P < 0.0001. P-trend for IL-6 and IL-8 with MIR versus FIR was <0.0001. Comparison with respect to clinical IUI yielded persistent elevation with FIR even when clinical signs were absent. The remaining 24 markers were not significantly associated. Conclusion. We conclude that among 27 cord blood biomarkers, IL-1β, IL-6 and IL-8 are selectively associated with FIR. These markers may be clinically useful indicators of extensive IUI associated with poor neonatal outcome.
Original language | English (US) |
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Pages (from-to) | 379-387 |
Number of pages | 9 |
Journal | Journal of Maternal-Fetal and Neonatal Medicine |
Volume | 22 |
Issue number | 5 |
DOIs | |
State | Published - 2009 |
Funding
The authors thank the nursing staff of Labor and Delivery at Boston Medical Center for their continuous support and assistance to the study and Lingling Fu for data management, and Ann Ramsay for administrative support. They particularly thank the outstanding expert consultants of the BMC Preterm Study team: Drs. Barry Zuckerman, Phillip Stubblefield, Jerome Klein, Milton Kotelchuck, John M. Kasznica and Paul Wise. They thank Drs. Michael Caplan and Isabelle DePlaen for their careful review of the manuscript. Finally, the authors thank all of the participating mothers and their families. The study was supported in part by grants from the National Institute of Child Health and Human Development (R01 HD41702), National Institute of Environmental Health Sciences (R01ES11682, R21ES11666) and March of Dimes Birth Defects Foundation (20-FY98-0701 and 20-FY02-56).
Keywords
- Chorioamnionitis
- Cytokines
- Intrauterine infection
- Placenta
ASJC Scopus subject areas
- Obstetrics and Gynecology
- Pediatrics, Perinatology, and Child Health