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Folia Histochem Cytobiol. 2012 Apr 24;50(1):118-24. doi: 10.2478/18706.

Increased apoptotic activity on inflammatory human placentas in spontaneous abortions during the first and second trimester of gestation: a histochemical and immunohistochemical study.

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  • 1Laboratory of Histology-Embryology, Democritus University of Thrace, Greece.


The aim of this study was to investigate the role of apoptotic markers on inflammatory human placentas from spontaneous abortions during the first and second trimester of gestation and compare them to those without inflammation. Paraffin-embedded specimens from 76 placentas were investigated by conventional histology and immunohistochemistry using monoclonal antibodies against M30, Caspase 3, Caspase 8 and Caspase 9, as well as the terminal deoxynucleotidyl tranferase-mediated deoxyuridine triphosphate nick end labeling method. A higher prevalence of expression of apoptotic markers (94.4%) was observed in placentas associated with chorioamnionitis in comparison with those without inflammation. Our observations confirm that apoptosis is strikingly prevalent in placentas diagnosed with histologic chorioamnionitis, while the inflammation induces cell death.

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