| Summary: | 5 Abstract The aim of this study was to evaluate the presence of receptors (CD16, CD161, NKG2D, KIR2DL4 and CD85j) on the surface of immunocompetent cells and whether their presence is involved in the in vitro fertilization (IVF) and following embryotransfer (ET) success. We observed significant difference in the age of successful versus unsuccessful patients, which is confirmed by former studies on age-dependence of IVF success. The result from cytotoxic assay confirmed, that neither the stimulation protocol, nor the PBMC source have any effect on effector function. Afterwards, we performed a large-scale analysis of surface markers, starting with healthy donors, compared to patients. Both groups of patients have lower counts of HLA-G binding KIR2DL4 or CD85j receptors bearing cells. Next we observed the expression of these two receptors on various subpopulations of cells (CD56+dim , CD56+bright , T helpers and cytotoxic T cells) and their counts. Here we observed differences in CD56 surface expression on CD56+ bright NK cells, the levels of CD56+dim NK cells in PBMC (CD16 expression on this population), levels of CD56+dim Next step was to compare the levels of cell populations between the successful and unsuccessful patients. We observed an increased surface expression of KIR2DL4 on lymphocytary PBMC of...
|
|---|
