1. Interleukin-19 in fetal systemic inflammation.
- Author
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Savasan, Zeynep Alpay, Chaiworapongsa, Tinnakorn, Romero, Roberto, Hussein, Youssef, Kusanovic, Juan Pedro, Xu, Yi, Dong, Zhong, Kim, Chong Jai, and Hassan, Sonia S.
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INTERLEUKINS , *CYTOKINE receptors , *NEWBORN infants , *EMBRYOLOGY , *ENZYME-linked immunosorbent assay , *INFLAMMATORY mediators - Abstract
Objective: The fetal inflammatory response syndrome (FIRS) is considered the fetal counterpart of the systemic inflammatory response syndrome (SIRS), which can be caused by infection and non-infection-related insults. Although the initial response is mediated by pro-inflammatory signals, the control of this response is achieved by anti-inflammatory mediators which are essential for the successful outcome of the affected individual. Interleukin (IL)-19 is capable of stimulating the production of IL-10, a major anti-inflammatory cytokine, and is a potent inducer of the T-helper 2 (Th2) response. The aim of this study was to determine if there is a change in umbilical cord plasma IL-19 and IL-10 concentrations in preterm neonates with and without acute funisitis, the histologic counterpart of FIRS. Methods: A case-control study was conducted including 80 preterm neonates born after spontaneous labor. Neonates were classified according to the presence ( n = 40) or absence of funisitis ( n = 40), which is the pathologic hallmark of FIRS. Neonates in each group were also matched for gestational age. Umbilical cord plasma IL-19 and IL-10 concentrations were determined by ELISA. Results: 1) The median umbilical cord plasma IL-19 concentration was 2.5-fold higher in neonates with funisitis than in those without funisitis (median 87 pg/mL; range 20.6-412.6 pg/mL vs. median 37 pg/mL; range 0-101.7 pg/mL; p < 0.001); 2) newborns with funisitis had a significantly higher median umbilical cord plasma IL-10 concentration than those without funisitis (median 4 pg/mL; range 0-33.5 pg/mL vs. median 2 pg/mL; range 0-13.8 pg/mL; p < 0.001); and 3) the results were similar when we included only patients with funisitis who met the definition of FIRS by umbilical cord plasma IL-6 concentrations ≥ 17.5 pg/mL ( p < 0.001). Conclusion: IL-19 and IL-10 are parts of the immunologic response of FIRS. A subset of fetuses with FIRS had high umbilical cord plasma IL-19 concentrations. In utero exposure to high systemic concentrations of IL-19 may reprogram the immune response. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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