Uterine natural killer cells in peri-implantation endometrium from women with repeated implantation failure after IVF
| Autor: | Tin C. Li, Susan Laird, E.M. Tuckerman, Najat Mariee, Alka Prakash |
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| Rok vydání: | 2010 |
| Předmět: |
Antigens
Differentiation T-Lymphocyte medicine.medical_specialty Stromal cell Immunology Uterus Fluorescent Antibody Technique chemical and pharmacologic phenomena Fertilization in Vitro Biology Endometrium Natural killer cell Antigens CD Pregnancy Internal medicine medicine Immunology and Allergy Humans Lectins C-Type Embryo Implantation Receptors IgG Obstetrics and Gynecology hemic and immune systems medicine.disease CD56 Antigen Killer Cells Natural medicine.anatomical_structure Endocrinology Reproductive Medicine In utero Embryo Loss Gestation Female Implant Stromal Cells |
| Zdroj: | Journal of reproductive immunology. 87(1-2) |
| ISSN: | 1872-7603 |
| Popis: | Several studies have suggested that endometrial uNK (CD56+) cells may play a role in implantation. The aim of this study was to investigate the number of CD56+, CD16+ and CD69+ cells in the unstimulated endometrium of women with recurrent implantation failure after IVF. The percentage of stromal cells positive for CD56, CD16 and CD69 was identified by immunocytochemistry in endometrial biopsies from 15 normal control women and 40 women with recurrent implantation failure. All biopsies were obtained on days LH+7 to LH+9. The density of CD56+ cells in endometrium from women with repeated implantation failure after IVF [median (range) CD56+ cell density=14.5% (1.5–71.4%)] was significantly higher ( P =0.005) than in endometrium from control women [5% (2.1–19.2%)]. There was no significant difference in the densities of CD16+ and CD69+ cells in the endometrium from women in the two groups. The increased density of CD56+ cells in the endometrium of women with recurrent implantation failure suggests that these cells are directly involved in the implantation process; alternatively this may indicate a general endometrial defect in these women, which leads to the inability of the embryo to implant. |
| Databáze: | OpenAIRE |
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