JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Preeclamptic women are deficient of interleukin-10 as assessed by cytokine release of trophoblast cells in vitro.

Cytokine 2003 August 22
BACKGROUND: It is well known that the acceptance of the fetoplacental unit in human pregnancy requires maternal immune tolerance, which is thought to be regulated locally by the placenta. Therefore an anti-inflammatory cytokine such as IL-10 plays a critical role in different pregnancy disorders including preeclampsia. In the present study, we examined the expression of both proinflammatory (TNF-alpha, IL-1beta, IL-2) and immunoregulatory (IL-6, IL-10) cytokines from normal term and preeclamptic patients in human trophoblast cultures.

METHODS: Eleven patients with preeclampsia and 11 patients with a normal pregnancy at term were included in the study. Trophoblast cells isolated from placentas were cultured up to 48 h under standard tissue culture conditions and cytokine release was determined by ELISA. IL-10 synthesis was significantly decreased in the third trimester in preeclamptic patients in comparison with the control group.

RESULTS: There were no significant differences in IL-1beta, IL-2, IL-6 or TNF-alpha expression but a significant alteration in IL-10 release in trophoblast cultures in vitro in term placentas from preeclamptic patients compared with normal pregnancy.

CONCLUSIONS: Because IL-10 is a potent regulator of anti-inflammatory immune response these abnormalities may be associated with the inadequate placental development in preeclampsia.

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