Maternal peripheral blood level of IL-10 as a marker for inflammatory placental malaria

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Maternal peripheral blood level of IL-10 as a marker for inflammatory placental malaria

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dc.contributor.author Kabyemela, Edward R. en_US
dc.contributor.author Muehlenbachs, Atis en_US
dc.contributor.author Fried, Michal en_US
dc.contributor.author Kurtis, Jonathan D. en_US
dc.contributor.author Mutabingwa, Theonest K. en_US
dc.contributor.author Duffy, Patrick E. en_US
dc.date.accessioned 2010-04-21T15:50:44Z
dc.date.available 2010-04-21T15:50:44Z
dc.date.issued 2008 en_US
dc.identifier.citation Kabyemela E, Muehlenbachs A, Fried M, et al. Maternal peripheral blood level of IL-10 as a marker for inflammatory placental malaria. Malaria Journal. 2008;7(1):26. en_US
dc.identifier.other 10.1186/1475-2875-7-26 en_US
dc.identifier.uri http://www.malariajournal.com/content/7/1/26 en_US
dc.identifier.uri http://hdl.handle.net/1773/15733
dc.description.abstract Background: Placental malaria (PM) is an important cause of maternal and foetal mortality in tropical areas, and severe sequelae and mortality are related to inflammation in the placenta. Diagnosis is difficult because PM is often asymptomatic, peripheral blood smear examination detects parasitemia as few as half of PM cases, and no peripheral markers have been validated for placental inflammation. Methods: In a cohort of Tanzanian parturients, PM was determined by placental blood smears and placental inflammation was assessed by histology and TNF mRNA levels. Maternal peripheral blood levels of several immune mediators previously implicated in PM pathogenesis, as well as ferritin and leptin were measured. The relationship between the levels of these soluble factors to PM and placental inflammation was examined. Results: Peripheral levels of TNF, TNF-RI, TNF-RII, IL-1, IL-10, and ferritin were elevated during PM, whereas levels of IFN-[gamma], IL-4, IL-5 and IL-6 were unchanged and levels of leptin were decreased. In receiver operating characteristic curve analysis, IL-10 had the greatest area under the curve, and would provide a sensitivity of 60% with a false positive rate of 10%. At a cut off level of 15 pg/mL, IL-10 would detect PM with a sensitivity of 79.5% and a specificity of 84.3%. IL-10 levels correlated with placental inflammatory cells and placental TNF mRNA levels in first time mothers. Conclusion: These data suggest that IL-10 may have utility as a biomarker for inflammatory PM in research studies, but that additional biomarkers may be required to improve clinical diagnosis and management of malaria during pregnancy. en_US
dc.description.sponsorship This work was supported by grants from Bill and Melinda Gates Foundation (grant 29202), NIH (R01 AI52059 and TW05509) and Puget Sound Partners for Global Health to P.E.D. en_US
dc.language.iso en_US en_US
dc.title Maternal peripheral blood level of IL-10 as a marker for inflammatory placental malaria en_US
dc.type Article en_US


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