BACKGROUND: Pre-eclampsia is a heterogeneous syndrome ranging from mild hypertension and proteinuria to severe pre-eclampsia with complications, which can also be associated with an enhanced maternal inflammatory response. METHODS: Tumor necrosis factor-alpha (TNF-alpha), interleukin-1 (IL-1), interleukin-6 (IL-6) and interferon-gamma (IFN-gamma) were evaluated by multiplexed sandwich enzyme-linked immunosorbent assay in 14 pre-eclamptic women, 57 normotensive pregnant women (20 in the first, 20 in the second and 17 in the third trimester) and 21 non-pregnant women. RESULTS: The concentration of serum TNF-alpha was lower than the sensitivity limit of the assay in all groups. The prevalence of measurable IL-1 and IL-6 values, but not that of IFN-gamma, increased significantly in the second and third trimesters of pregnancy. However, the percentage of subjects with higher or detectable values of pro-inflammatory cytokines was statistically different between pre-eclamptic women and those in the second and third trimester of physiological pregnancy. CONCLUSIONS: Results of this study do not support standard screening for pro-inflammatory cytokines (TNF-alpha, IL-1, IL-6 and IFN-gamma) in pre-eclampsia.
BACKGROUND: Pre-eclampsia is a heterogeneous syndrome ranging from mild hypertension and proteinuria to severe pre-eclampsia with complications, which can also be associated with an enhanced maternal inflammatory response. METHODS:Tumor necrosis factor-alpha (TNF-alpha), interleukin-1 (IL-1), interleukin-6 (IL-6) and interferon-gamma (IFN-gamma) were evaluated by multiplexed sandwich enzyme-linked immunosorbent assay in 14 pre-eclamptic women, 57 normotensive pregnant women (20 in the first, 20 in the second and 17 in the third trimester) and 21 non-pregnant women. RESULTS: The concentration of serum TNF-alpha was lower than the sensitivity limit of the assay in all groups. The prevalence of measurable IL-1 and IL-6 values, but not that of IFN-gamma, increased significantly in the second and third trimesters of pregnancy. However, the percentage of subjects with higher or detectable values of pro-inflammatory cytokines was statistically different between pre-eclamptic women and those in the second and third trimester of physiological pregnancy. CONCLUSIONS: Results of this study do not support standard screening for pro-inflammatory cytokines (TNF-alpha, IL-1, IL-6 and IFN-gamma) in pre-eclampsia.
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