Determination of Clinical Cellular Immune Markers in Women with Recurrent Pregnancy Loss

作者：Lee Sung Ki; Na Baeg Ju; Kim Jee Yun; Hur Sung Eun; Lee Millina; Gilman Sachs Alice; Kwak Kim Joanne^*

来源：American Journal of Reproductive Immunology, 2013, 70(5): 398-411.

DOI：10.1111/aji.12137

• Cutoff value
• cytokines
• natural killer cell cytotoxicity
• natural killer cells
• recurrent pregnancy loss
• TNF-alpha

ProblemDysregulated natural killer (NK) immunity and T-cell immunity are associated with recurrent pregnancy loss (RPL). We aim to define clinically relevant NK and T-cell parameters for RPL and determine their cutoff values.
Methods of studyNinety-five women with RPL (>3) including 42 idiopathic and 53 known-etiology RPL, and 29 age-matched fertile controls were enrolled. Peripheral blood immunophenotype, NK cell cytotoxicity (NKC), and T-helper (Th) 1 and Th2 cytokine producing cell ratios (Th1/Th2) were measured using flowcytometry. The cutoff values were determined using Youden's J with likelihood ratio (LR) >2.
ResultsNatural killer cell percentage and NKC, TNF-(+) Th1 cells, and TNF-/IL-10 producing Th1/Th2 cell ratio were significantly higher in idiopathic RPL than controls. By the area under the curve (AUC) analysis, NK cell percentage (AUC=0.691), NKC (AUC=0.649), TNF-(+) Th1 cells (AUC=0.681) and Th1/Th2 cell ratio (AUC=0.660) were highly specific for RPL. The cutoff values for NK cell percentage, NKC (E:T cell ratio 25:1), and TNF-/IL-10 producing Th1/Th2 cell ratio are 16.1, 23.8, and 36.2%, respectively. Seventy-six percent of idiopathic RPL showed at least one of more immune abnormalities by these criteria.
ConclusionDifferences in NK cell percentages, NKC and Th1/Th2 cell ratio differentiated RPL from fertile controls.

• 出版日期2013-11