Journal
PLACENTA
Volume 26, Issue 8-9, Pages 672-677Publisher
W B SAUNDERS CO LTD
DOI: 10.1016/j.placenta.2004.10.003
Keywords
fluorescence in situ hybridisation; chorioamnionitis; leukocytes; maternal; fetal
Funding
- MRC [MC_U120081323] Funding Source: UKRI
- Medical Research Council [MC_U120081323] Funding Source: Medline
- Medical Research Council [MC_U120081323] Funding Source: researchfish
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The aim of this study was to determine the maternal or fetal origin of inflammatory leukocytes in fetal membranes from cases of chorioamnionitis. Fetal membranes were collected from male preterm infants and chorioamnionitis was diagnosed histologically. Fluorescence in situ hybridisation for X and Y chromosomes was used to determine the gender of infiltrating leukocytes in the chorion and amnion. Leukocytes, trophoblast and mesenchymal cells were identified using immunohistochemistry for CD45, cytokeratin-7 and vimentin, respectively. Leukocytes present in the chorion and amnion were labelled XX, indicating maternal origin, and these cells were immunoreactive for the leukocyte marker CD45 but not for vimentin or cytokeratin-7. All other cells in the chorion and amnion were labelled XY and of fetal origin. The results indicated that maternal leukocytes invade the amnion and chorion in chorioamnionitis and we suggest that this is part of the maternal inflammatory response to intrauterine infection.
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