ArticleJournal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine2026
Lower Plasma Antioxidant Defense and Heat Shock Proteins Mark Intra-Amniotic Sludge Ultrasound Finding.
Article in Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesIntra-amniotic sludge is an independent risk factor for preterm birth. It consists of a biophysical sonographic finding in the amniotic fluid, formed by dense echogenic particles near the cervical internal orifice, due to sterile or infectious inflammatory processes. High-risk pregnancies are usually marked by oxidative stress, which is one of the main triggers for 70 kDa-heat shock proteins (HSP70) expression and release. In the blood, eHSP70 marks cellular stress or damage and plays roles in immune-inflammatory responses. However, the association between sludge, oxidative stress and eHSP70 remained unclear until now. The objective of this study is to evaluate if plasma eHSP70 and redox parameters could distinguish subpopulations with sludge or not.
methodsWe recruited women seeking routine ultrasonography in the second trimester of gestation that met the inclusion criteria. They underwent transvaginal ultrasonography, completed the clinical survey, and provided blood samples for analysis.
resultsWomen with sludge exhibited lower antioxidant defense, and eHSP70 levels. They also presented significant changes in the hemogram, suggesting an increase in immune tolerance. In this population, lower HSP70 is associated with a better immunological scenario and proper cervical length to the gestational age.
conclusionBlood parameters, oxidative parameters and eHSP70 can indicate intra-amniotic inflammation.
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