Increased Peripheral NKG2A-NKG2D+CD3-CD16+CD56dim NK Cell Subset Was Positively Correlated with Antiphospholipid Antibodies in Patients of Obstetric Antiphospholipid Syndrome.

In this study, we compared the distributional profiles of different NK cell subsets and the expressions of NK cell-activating receptors in peripheral blood of patients with OAPS and healthy women. Our results showed significantly increased NKG2A-NKG2D+ subset and decreased NKG2A+NKG2D- subset in CD3- CD16+CD56dim NK cells, CD3-CD16-CD56bright NK cells and CD56+T cells in OAPS patients compared with those in healthy control women. The CD27-CD11b+ subset significantly increased in CD3-CD16+CD56dim NK cells in OAPS patients compared with those in healthy control women. In addition, the NKG2A-NKG2D+ subset in CD3-CD16 + CD56dim NK subset in triple positivity was higher than single positivity OAPS patients. At the optimal diagnostic threshold established by ROC analysis, using the cut-off of NKG2A-NKG2D+ and CD27-CD11b+ subset in CD3-CD16+CD56dim NK cells is 10.10% and 92.75%, the sensitivity of NKG2A-NKG2D+ and CD27-CD11b+ to detect patients with OAPS compared with healthy control results was 94.1% and 60.8%, and specificity was 84.2% and 89.5%, respectively, with an area under the curve (AUC) of 0.903 and 0.829, respectively. The NKG2A-NKG2D+ subset in CD3-CD16+CD56dim NK cells was positively correlated with the antiphospholipid antibodies lg anti-aCL IgG, lg anti-aCL IgM, lg anti-aCL IgA, lg anti-β2GP1 IgM and Complement 4(C4), while the CD27+CD11b+ subset in CD3-CD16 + CD56dim NK cells was correlated with lg anti-β2GP1 IgG and lg anti-β2GP1 IgA. These results suggested that...
Source: Immunological Investigations - Category: Allergy & Immunology Tags: Immunol Invest Source Type: research