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  • Title: Monocytes of preeclamptic women spontaneously synthesize pro-inflammatory cytokines.
    Author: Luppi P, Deloia JA.
    Journal: Clin Immunol; 2006; 118(2-3):268-75. PubMed ID: 16337193.
    Abstract:
    The maternal syndrome preeclampsia is characterized by a generalized inflammatory response with activation of circulating leukocytes and altered levels of inflammatory cytokines. We hypothesized that one potential source of inflammatory cytokines during preeclampsia is the circulating maternal monocytes. By using flow cytometry, we found that the spontaneous intracellular synthesis of IL-1beta, IL-6, and IL-8 in monocytes of preeclamptic women was higher than in normal pregnant and non-pregnant women. The highest levels of cytokines were detected in women with the most abnormal laboratory values. When stimulated with lipopolysaccharide (LPS), the percentage of IL-1beta+ monocytes was lower in preeclampsia (72.6% +/- 8.2 SEM) than in normal pregnancy (90.7% +/- 2 SEM) (P = 0.03) and non-pregnant women (92.5% +/- 1.4 SEM) (P = 0.04) suggesting that monocytes from preeclamptic patients cannot be further stimulated. These results indicate that maternal circulating monocytes represent a source of inflammatory cytokines during preeclampsia.
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