Uterine (CD56+) natural killer cells recruitment: association with decidual reaction rather than embryo implantation

American Journal of Reproductive Immunology : AJRI
Jaume OrdiJuan Balasch

Abstract

Whether decidual leukocyte recruitment and/or increase is primarily hormonally regulated or induced mainly by blastocyst implantation is a matter of debate. Thus, this study investigated the number and distribution of leukocyte populations, with emphasis on natural killer (NK) cells of uterine and peripheral type, within decidual tissue from women with decidualized endometrium both related and unrelated to pregnancy and those with ectopic decidua associated with intrauterine pregnancy, as well as in tubal implantation sites. Immunohistochemical characterization of immune cells using antibodies to CD3, CD4, CD8, CD20, CD68, CD16, CD56, CD57, in formalin-fixed, paraffin-embedded tissue, and a quantitative analysis of these subpopulations was conducted in tissue blocks from four groups of patients: (i) 20 women with decidualized endometrium due to progestin therapy (i.e. not associated with gestation) (group Prog-D); (ii) 20 women with intrauterine pregnancy-associated ectopic decidua (seven in the Fallopian tube, five in the ovary, five in the uterine cervix, and three in the omentum) (group Ect-D); (iii) 20 women with spontaneous abortion who had an histologic sample of the decidua at the uterine implantation site (group Uter-D)...Continue Reading

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Citations

Nov 29, 2007·Journal of Assisted Reproduction and Genetics·Gérard ChaouatNathalie Ledée
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May 15, 2007·Current Opinion in Obstetrics & Gynecology

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